837results about How to "No consumption" patented technology

The invention relates to a water quality multi-index detection method on the basis of an ultraviolet-visible absorption spectrum. The method comprises the following steps: (1) establishing a water quality algorithm model comprising each water quality index; (2) measuring to obtain the ultraviolet-visible absorption spectrum of the to-be-detected water; (3) calculating to obtain a primary calculation value of each water quality index in the to-be-detected water according to the water quality algorithm model and the ultraviolet-visible absorption spectrum of the to-be-detected water; (4) locally correcting the primary calculation value of each water quality index in the to-be-detected water to obtain a detection result corresponding to each water quality index; and (5) comparing the obtained detection result corresponding to each water quality index and relevant water quality standard of each water quality index, judging whether the to-be-detected water quality exceeds the standard or not and issuing an alarm. By measuring the ultraviolet-visible full-wavelength absorption spectrum of the detected water, combining with the water quality algorithm model and correction parameters, each water quality index in the water can be synchronously calculated. The method can be widely suitable for monitoring and alarming for various kinds of surface water, various kinds of sewage, drinking water, and for control of sewage and water supply treatment processes.

The invention discloses an ultraviolet fluorescence double-signal water quality monitoring device taking an LED (light emitting diode) as a light source and an application method of the device, and belongs to the field of environmental monitoring and water treatment. The ultraviolet fluorescence double-signal water quality monitoring device taking the LED as the light source consists of a sample collecting part and a detection part. The application method comprises the steps of selecting a deep ultraviolet LED lamp light source with specific wavelength and a photoelectric detector component according to a three-dimensional fluorescence atlas, detecting fluorescence intensity and ultraviolet absorption at the specific wavelength at the same time and calculating a ratio of the fluorescence intensity to the corresponding ultraviolet absorption. According to the device, no chemical reagent is consumed, monitoring of total concentration change of soluble organic matters in a water body can be realized, change of concentration of fluorescence ingredients such as proteins and humus can be reflected at the same time, and the sensitive, quick, efficient, economical, easy and information-rich on-line monitoring device is provided for the water treatment.

The invention discloses a lifting device. The lifting device comprises a spring, a first sleeve, a second sleeve, a connecting assembly and a control assembly, wherein the spring is used for providing maintaining action force after lifting and uses a fluid as a damping medium; one end of the spring is located in the first sleeve and fixed with one end of the first sleeve; one end of the second sleeve is inserted into the first sleeve from the other end of the first sleeve, and a guide assembly for facilitating lifting of the second sleeve is arranged on the first sleeve and / or the second sleeve; the connecting assembly is arranged at the other end of the second sleeve, and the other end of the spring penetrates the second sleeve to be connected with the connecting assembly; the control assembly is connected with a control part, used for controlling flowing of the fluid, in the spring after being connected with the connecting assembly. The lifting device has the effects that the lifting device can be lifted anytime anywhere and is safe, reliable, free of energy consumption and lower in cost compared with an electric lifting table.

The present invention relates to a ferromanganese modified straw active carbon adsorbent for As (III) adsorption, and applications thereof. The technical scheme comprises: preparing straw into straw active carbon, adding to nitric acid, carrying out an acidification treatment to obtain acidified straw active carbon, adding the acidified straw active carbon to a metal iron salt and HCl mixing solution, carrying out a reaction at a room temperature for 22-24 h, heating to a temperature of 95-105 DEG C, carrying out a reaction for 6-7 h to obtain iron modified active carbon, mixing a metal manganese salt and the iron modified active carbon, carrying out a reaction at a temperature of 75-85 DEG C, adding a KMnO4 and KOH mixing aqueous solution, carrying out a reflux reaction at a temperature of 75-85 DEG C, and washing he product so as to obtain the target product. According to the present invention, with the ferromanganese modified straw active carbon adsorbent, the As (III) can be selectively recovered from the solution containing the As (III) ions and the impurity metal ions; and the ferromanganese modified straw active carbon adsorbent has advantages of low cost, high selectivity, high adsorption capacity, and the like.

The invention discloses a precise measuring method for a moving position and a moving gesture of a motor vehicle. The method comprises the following steps of a preparation step before the measurement and a real-time measurement step, wherein the preparation step before the measurement comprises the steps of establishing an RTKGPS (real-time kinetic global positioning system) base station, establishing a wireless data communication link, drawing an examination field or a examination road electronic map, installing a car-mounted detection device on the motor vehicle and measuring a relative coordinate of key points of the motor vehicle outline; and the real-time measurement step comprises the steps of measuring and calculating a precise three-dimensional position coordinate and a gesture angle as well as a position relation among different signs, marked lines and static objects of the motor vehicle in the examination field or the examination road electronic map. Due to the adoption of the precise measuring method, the measurement equipment is unnecessary to set on the examination field or the examination road, the detection can be realized by directly adopting the communication between the car-mounted detection device and the base station in the measurement, and the operation cost of the position and gesture detection equipment of the motor vehicle can be reduced when in use; and the detection way is simple, convenience in operation can be realized, continuity in detection can be realized, and the measurement precision is high.

The present invention discloses a conformal light-sensing structure integrated digital microfluidic chip which can monitor a chemical reaction between droplets carrying different components in a digital microfluidic chip in real-time, in the detection application field of digital microfluidic biochemical detection on consumption for a low level sample. According to the chip disclosed by the present invention, on the basis of no change of a current structure and property of electrowetting, a subwavelength scale optical sensing structure is embedded between electrowetting adjacent electrode gaps; a co-planar conformal structure with a hydrophobic layer of the electrowetting structure is kept in structure; by detecting a change of a light-sensing structure light field which is caused by a small change in a refractive index occurring during a process of the droplets reaction, determination for composition and location of a microdroplet is realized. Compared with light sensing composed of a conventional capacitor, an electrical impedance sensor, an electrochemical sensor and a discrete element, the chip disclosed by the present invention has the advantages of being simple in structure, standard CMOS compatible process which is easier to integrate, low in cost and high in accuracy. In addition, a characteristic that a sensing structure is conformal with an electrowetting structure enables a sensing function to be added without reducing the electrowetting performance.

The invention discloses an anti-counterfeiting and authenticity-verifying method and system for an article. The method comprises the following steps of: encrypting anti-counterfeiting article information acquired by using a first private key to generate a first signature file, and generating anti-counterfeiting codes according to public key information corresponding to the first signature file and the first private key; and when the article with the generated anti-counterfeiting codes is verified and displayed, acquiring image information of the anti-counterfeiting codes by using image pickup equipment, obtaining the first signature file and the public key information according to the image information, decrypting the first signature file according to the public key information, displaying the decrypted information, and judging the authenticity of the article according to the displayed information. According to the method, when the authenticity of the article is queried, the authenticity of the article can be identified without querying the information database of the article through a mobile phone or short message or in a surfing mode, the query process is convenient, and consumption of communication resources cannot be generated; meanwhile, according to the method of the embodiment, information data of the article do not need to be established and maintained, thus the cost of querying the authenticity of the article is reduced.

The present invention discloses an air tightness detecting system used for the lithium battery, wherein the air tightness detecting system comprises the following components: a pressurizing and pressure relieving mechanism, a sealing mechanism, a detecting sealing chamber, a downstream precise flow leak detector and a reference volume chamber. The sealing chamber comprises a base of the tested workpiece, a first sealing gasket, an upper sealing cover and a second sealing gasket which is placed on an appropriate position of the upper sealing cover. Thereby the detecting system is divided into an inner chamber of the workpiece and an outer chamber of the workpiece. The inner chamber of the workpiece and the outer chamber of the workpiece are provided with a controllable valve channel for connecting or switching-off with the pressurizing and pressure relieving mechanism and the downstream precise flow leak detector. The reference volume chamber is a closed container and is connected with the inner chamber of the workpiece through the downstream flow lead detector. The invention simultaneously discloses a method for detecting the detecting system. The air tightness detecting system of the invention can detect the little leakage generated in the manufacturing process of the lithium battery effectively, quickly and reliably.

The invention relates to a whole-process adsorption and automatic folding mechanism for a full-automatic nailing machine. The whole-process adsorption and automatic folding mechanism comprises two travelling large arms arranged in parallel, hollow paper adsorption square steel arranged on the travelling large arms and provided with an internal cavity, a convey belt arranged on the travelling large arms, a blower communicated with the internal cavity in the paper adsorption square steel, and guide rods arranged on the outer sides of the travelling large arms, wherein a plurality of suction holes are formed in the upper end surface of the paper adsorption square steel; a paper pressing cross beam is erected right above the paper adsorption square steel; a clearance for travelling of paper boards is reserved between the paper pressing cross beam and the paper adsorption square steel; a plurality of paper guide wheels are arranged on the outer side of the paper pressing cross beam. The whole-process adsorption and automatic folding mechanism is arranged between a front edge paper feeding mechanism and a nailing mechanism of the full-automatic nailing machine, and used for connecting the front edge paper feeding mechanism and the nailing mechanism, so as to convey the paper boards treated with line pressing and slotting, and fulfill the folding operation during the conveying process; nailing can be carried out as long as the paper boards enter the nailing mechanism. Therefore, convenience is brought for realization of full-automatic operation of the whole operation process; the production and machining efficiencies are improved; labor cost is reduced; the significance in the field of carton production is great.

The invention discloses a method for extracting molybdenum from molybdenum-containing high-concentration acid lixivium and an application of an extraction agent. The method comprises the following steps of: directly extracting the molybdenum-containing high-concentration acid lixivium by utilizing the extraction agent; and obtaining ammonium molybdate or sodium molybdate solution by carrying out back-extraction on an extracted loaded organic phase by utilizing ammonia water or NaOH solution to obtain ammonium molybdate or sodium molybdate solution. The application is used for selectively extracting the molybdenum from the molybdenum-containing high-concentration acid lixivium so as to separate the molybdenum from impurities such as phosphorus, arsenic, silicon, iron, aluminum, calcium and magnesium in acid solution. The method disclosed by the invention is short in process, simple in operation and low in cost; and the extraction agent is used for extracting the molybdenum from the molybdenum-containing high-concentration acid lixivium, is high in extraction efficiency of the molybdenum and can be industrially applied.

The invention discloses a method for measuring the content of moisture of tobaccos through low-field nuclear magnetic resonance. The method is characterized by comprising the following steps: measuring nuclear magnetic resonance FID signals of a series of CuSO4 solution samples containing different moisture masses, and fitting a standard measurement curve according to the FID signal amount and the corresponding moisture mass of each CuSO4 solution; performing the rapid and accurate measurement on a tobacco sample with the unknown content of the moisture, and converting the FID signal amount of the sample into the moisture mass according to the standard measurement curve, wherein the ratio of the moisture mass to the mass of the tobacco sample is the moisture of a tested sample. The method has the beneficial effects that compared with a conventional testing method, the method is high in testing speed and accurate in testing result, the sample pretreatment process and the sample shape requirement in the testing process are avoided, a solvent is not required to be consumed, the sample loss is avoided, and the environment-friendly testing concept is fully reflected.

The invention relates to a method for preparing a double-metal composite hammer, which comprises the following steps: coating a thermal treatment protective paint on a hammer handle prefabricated member (3), and heating the hammer handle prefabricated member to be between 300 and 800 DEG C; coating casting paint on the surface of a cavity of a metal die (4), and preheating the metal die to be between 120 and 300 DEG C; putting the hammer handle prefabricated member into the cavity of the metal die, and pouring abrasion-resistant alloy melt (5) into the cavity of the metal die at a temperature of between 15 and 80 DEG C higher than a phase line temperature of the abrasion-resistant alloy melt; and within 10 seconds after pouring, pressurizing the hammer handle prefabricated member at 50 to 150MPa, keeping the pressure, and then taking out the hammer. Impact toughness of the hammer handle prefabricated member is more than or equal to 5 to 20 J / cm<2>, hardness is 25 to 40HRC, and the hammer handle prefabricated member is processed and shaped. The length of a connecting handle of the hammer handle prefabricated member is 1 / 4 to 4 / 5 of the length of the hammer head (1), and the thickness and the width of the connecting handle are 1 / 3 to 1 / 2 of the thickness and the width of the hammer respectively; and the surface of the connecting handle is provided with an annular groove. The method solves the problem that an embedded double-metal composite hammer is easy to fall off and a double-liquid double-metal composite hammer is easy to mix double liquids so as to reduce service performance.

The invention discloses a successive approximation type analog-to-digital converter and a low power consumption switching algorithm thereof. By adopting a split capacitor array structure and a reasonable control logic setting, the energy consumed by the capacitor array in the switching process of the SAR ADC is greatly reduced. Compared with the traditional switching algorithm, the switching algorithm of the invention saves 99.76% of the conversion energy and 75% of the capacitor area, and improves the economic benefit. In addition, the switching algorithm provided by the invention makes the output common-mode voltage of the capacitor array only change slightly when the lowest bit is converted, thereby greatly reducing the design complexity of the comparator.

The no-stop vehicle transfer method for passenger train includes arranging the passengers to be going to get off in some station in the tail carriage, or pulling-in carriage, in advance, separating the pulling-in carriage while the train body goes forwards, arranging boarding passengers in the outgoing carriage in advance, pushing the outgoing carriage with one assisting locomotive to connect with the train body, and transferring the boarding passengers to the main carriages. The present invention has separated pulling-in carriage and outgoing carriage, makes the getting on and getting off convenient, and results in saving in stop time and raised train transportation efficiency.

The invention discloses an automotive air conditioner and a control method thereof. The automotive air conditioner comprises an engine, an engine radiator, an air conditioner heating device and a heater, wherein the engine radiator cools the engine; the air conditioner heating device provides heat for space required heating by heat generated by the engine; and the heater can selectively supply heat for the engine and the air conditioner heating device. When the engine has enough heating capability, the traditional engine anti-freezing solution is adopted for heating; when the engine does not have enough heating capability, the engine and the heater can be simultaneously used for heating; because two effects are combined, the heating capability is improved for multiple times; and if the engine does not need to be started, the heater can be independently used for heating, thereby consuming no gasoline, and improving energy utilization rate, and being environment-friendly.

The invention discloses an aluminum alloy surface B4C particle reinforced Al base composite cladding layer and a preparation method, overcomes the problem that a traditional technology is difficult to remove compact oxide films quickly grown on surfaces of aluminum and an alloy of the aluminum, solves the problems of difficult powder feeding due to light mass of B4C particles and weak wettability with aluminum alloy molten liquid, and effectively leads the B4C particles in the aluminum alloy surface layer to form an Al base composite cladding layer with excellent metallurgic bonding. In cooperation with the powder-wire composite cladding technical scheme, by using consumable electrode inert gas protective welding-MIG welding, aluminum alloy welding wires are transited to the aluminum alloy wire, the side injection of the B4C particles is assisted to fuse in the Al base cladding layer, that is, the B4C particle reinforced Al base composite cladding layer is prepared on the aluminum alloy surface. The B4C particle reinforced Al base composite cladding layer and an aluminum alloy substrate are excellently bonded, and the B4C particles in the cladding layer and an Al matrix are excellently bonded, and obvious defects such as air holes and cracks are avoided; and the aluminum alloy surface B4C particle reinforced Al base composite cladding layer is higher in wear resistance compared with 45 steel.

The invention discloses organic-inorganic compound fertilizer particles and a preparation method thereof. The organic-inorganic compound fertilizer particles comprise the following components in parts by weight: 25-45 parts of powder, 25-35 parts of plant ash and 5-10 parts of adhesive and the balance of one or several of a nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer and trace-element fertilizers, wherein the powder is generated by performing microbiological treatment on kitchen wastes; the plant ash is prepared by combusting crop straws, drying, milling and screening. The organic-inorganic compound fertilizer particles are granular; because the inorganic fertilizer is coated with the fertilizer particles, and the plant ash has a good adsorption effect, so that the nutrient release speed is low, and the organic-inorganic compound fertilizer particles have a certain slow release benefits.

The invention discloses a making method of concentrate iron ore, which comprises the following steps: (1) adding 5-25% ferric powder or ferric mud into disposed powder evenly; (2) placing material into reducing sintering furnace to sinter for 2-8 min through microwave; reducing weak magnetic ferric ore into magnetic ferric ore; (3) proceeding magnetic cobbing to obtain the product.

A process for preparing Cr2O3 by continuous thermodecomposition of chromic acid includes such steps as proportionally mixing chromic acid, coarse Cr2O3 as returning charge and additive chosen from boric acid (preferable), ammonium chloride, starch and saw dust; after uniformly mixing under a computer control, parallel-flow combustion of the said mixture and liquefied gas as fuel in an insulated rotary furnace, thermodecomposition reaction to generate Cr2O3, keeping the temp. for a certain time, cooling and pulverizing to obtain the product. The unpulverized material is used as the said returning charge.

The invention discloses an electronic frisbee shooting system which comprises a laser gun or an infrared gun and an electronic frisbee. The laser gun or the infrared gun comprises a controller I which is placed inside a gun body, and a power supplying device I, a trigger switch, a direction switch, a laser transmitter or an infrared transmitter, a sound device and a vibration device are respectively connected on the controller I. The electronic frisbee comprises a controller II which is placed inside a shell body, and a power supplying device II, a fuming device, a laser receiver or an infrared receiver and a plurality of LED devices are respectively connected with the controller II, wherein the laser receiver or the infrared receiver corresponds to the laser transmitter or the infrared transmitter, and the LED devices are evenly distributed on the side face shell body. The electronic frisbee shooting system further comprises a casting frisbee device. The electronic frisbee shooting system is simple in structure, convenient to use and low in cost.

An embodiment of the invention provides a television shopping method which includes the steps: transmitting a voice session request to a service port, and establishing a voice session connection between the input control terminal and the service port when a shopping request of a user is received from an input control terminal; forwarding commodity purchasing information interacted by a user and a customer service through the voice session connection built between the input control terminal and the service port and commodity purchasing result information transmitted by the service port according to the commodity purchasing information; synchronously displaying the commodity purchasing information interacted by the user and the customer service through the voice session connection and the commodity purchasing result information on a display interface of a digital television terminal. Shopping efficiency can be improved, telephone bill consumption or input control terminal hardware consumption cannot be generated, and user experience can be improved.

The invention discloses a platform which can reconstruct a series of motion phenomena happened to epicentral areas and peripheral grounds near the epicentral areas and destructive effects caused by the motion phenomena. The platform is composed of a fixed revolving shaft, a seismic focus block, an air space, a pulling pile, a pulling rope, a cobble layer and a common stratal substance layer, wherein the seismic focus block is overlaid on the fixed revolving shaft and is in an overhead state, the air space is adjacent to the seismic focus block, the pulling pile and the pulling rope are used for keeping the seismic focus block in the overhead state and restoring the seismic focus block to the overhead state, the cobble layer is overlaid on the upper surface of the seismic focus block, and the common stratal substance layer is arranged on the cobble layer. The platform is characterized in that the distance between a limit pile and the seismic focus block is set according to a required surface intensity, after the pulling rope is loosened, the seismic focus block naturally inclines to the air space side under the action of gravitational attraction so as to drive the ground of the platform to produce motion scenes and intensities of the epicentral areas and the peripheral grounds near the epicentral areas when earthquakes occur; the seismic focus block can be restored to the normal position by the pulling actions of the pulling pile and the pulling rope, then the seismic focus block is in the overhead state again, and a new simulated seismic experiment can start again. The platform provided by the invention can provide objective and accurate data for tests on seismic materials, seismic structures and the like.

The invention relates to a comprehensive treatment technology and system for ammonia containing organic waste gas and ammonia containing organic waste water. The comprehensive treatment technology comprises the steps that high-temperature furnace inflow waste gas is conveyed into an RTO heat accumulation type incinerator through a waste gas draught fan to be incinerated, and clean smoke is subjected to nitrogen oxide catalytic reduction through an SCR reactor. The comprehensive treatment system comprises the RTO heat accumulation type incinerator, a waste gas mixer is arranged at the front endof the RTO heat accumulation type incinerator, a mixer is arranged at the rear end of the RTO heat accumulation type incinerator and connected with a metal filter, the metal filter is connected withthe SCR reactor, the SCR reactor is connected with a plate heat exchanger, and the plate heat exchanger is connected with a forcing heat exchanger. Low-temperature smoke waste heat is circularly utilized, the furnace feeding temperature is increased, the exhaust temperature of an incinerator system is increased and meets the smoke catalysis denitration technology requirement, no fuel consumption and no denitration agent consumption are achieved, waste water can be treated while waste gas is treated, and secondary pollutants are avoided.

The invention relates to the technical field of oil purification equipment, in particular to a centrifugal oil purifying machine. The centrifugal oil purifying machine is provided with a central shaft, a centrifugal cylinder, a front end cover, a rotating framework, a disk type guide plate, an oil collecting impeller, a driving device, an oil outlet pipe, an oil inlet pipe and an oil tank, and is characterized in that the disk type guide plate is made of titanium alloy material, involute-shaped convex edges are radially uniformly distributed on the surface of the disk type guide plate, oil-blocking convex edges are arranged between the involute-shaped convex edges, the oil-blocking convex edges are in ladder-like distribution, at least two drainage holes are arranged in the positions with large diameter below a cylinder body of the centrifugal cylinder in the centrifugal oil purifying machine, a water storage cavity is arranged above the cylinder body of the centrifugal cylinder, a drainage channel is arranged in the wall of the centrifugal cylinder, the drainage holes are communicated with the water storage cavity via the drainage channel, the water storage cavity is communicated with a water outlet guide pipe, and water sealing devices are arranged in the drainage holes. Due to the adoption of the structure, the centrifugal oil purifying machine has the advantages of novel structure, strong pollution discharge capability, safety in operation, stable performances, long service life of oil, no operation cost, no consumption of filter material, obvious separation effect and the like.

The invention discloses a rice husk cellulose adsorbent, and a preparation method and the application of the rice husk cellulose adsorbent. The technical scheme adopted by the preparation method comprises the steps of taking rice husks; putting the rice husks in a constant-temperature drying box after washing the rice husks by deionized water; drying under 40 to 60 DEG C; taking out the rice husks and smashing the rice husks into powder; treating rice husk powder by slowly adding the rice husk powder in concentrated sulfuric acid; carrying out water-bath heating treatment; washing acidized rice husk powder by sodium bicarbonate; washing the powder to be neutral by the deionized water; filtering; carrying out constant-temperature drying under 40 to 70 DEG C; grinding the powder until the grain diameter is 100 to 150 mum. The rice husk cellulose adsorbent, and the preparation method and the application of the rice husk cellulose adsorbent, disclosed by the invention, have the advantages that a functionalized adsorbent is prepared by modifying the rice husks by sulfuric acid, gallium can be adsorbed from gallium-contained solution, low cost is realized, waste is changed into wealth, the adsorption amount is large, and the like.

The invention relates to a preparation method of a surface modified nano palladium / iron catalytic reducing agent. The nano palladium / iron catalytic reducing agent is prepared by using a liquid-phase deposition method; and by adding a surface modifier and coating the surface modifier on the outer layer of the catalytic reducing agent, hard agglomeration of the nano palladium / iron catalytic reducing agent in water is reduced. The nano palladium / iron catalytic reducing agent modified by the surface modifier has no flocculation phenomenon in water and higher dispersion degree. Compared with the normal nano palladium / iron catalytic reducing agent, the modified nano palladium / iron catalytic reducing agent prepared by the invention has the advantages of high particle purity, no oxidative inactivation phenomenon, small particle size, high catalytic reduction reaction activity and capability of increasing the removal rate for various chlorinated organic compounds in water by 9-24 percent compared with the unmodified nano palladium / iron catalytic reducing agent.

The invention discloses a sulfydryl cellulose type straw adsorbent. A preparation method comprises the following steps: (1) taking straws and washing; drying at 50 DEG C; adding concentrated sulfuric acid and heating; filtering after stirring; washing to be neutral; filtering again and drying at 60 DEG C for 24 hours to obtain a product A; putting ammonia water and epoxy chloropropane into a reaction container I and reacting at 60 DEG C for 4 hours; adding the product A into the reaction container I and adding NaOH; reacting at 110 DEG C for 8 hours; after the reaction, filtering and washing the product to be neutral; drying at 55 DEG C to obtain a product B; and (2) dissolving thiosemicarbazide into a reaction container II and adding the product B and glutaraldehyde; reacting at 90 DEG C for 5 hours; filtering and washing; and drying at 55 DEG C to obtain a target product. The preparation method is simple, has no pollution and has low cost; the prepared straw adsorbent has high separation and enriching efficiency and trace silver can be separated and enriched from a high-concentration copper-nickel solution; and the preparation method has no energy consumption, is energy-saving and environmentally friendly, has a wide applicable range, and has actual applicability.

The invention discloses a method for preparing NH3 from a urea solid by dry pyrolysis. The method comprises the following steps of: delivering the urea solid into a pyrolysis oven by using a quantitative feeding device, wherein the feeding amount is adjusted corresponding according to actually-measured NOx amount in smoke gas; inputting high-temperature gas delivered by a high-temperature fan into the pyrolysis oven by using a flowmeter, wherein the high-temperature gas is fully contacted with urea; the urea is heated and decomposed into isocyanic acid and ammonia gas; and the isocyanic acid undergoes a further reaction with water vapor in the high-temperature gas so as to generate the ammonia gas and carbon dioxide; and replenishing heat supply when needed by using an electric heater in the pyrolysis oven, wherein pyrolysis gas is taken as a reducing agent used for removing NOx by selective catalyctic reduction and introduced into an ammonia spray grid after being exhausted from the pyrolysis oven. The method has the advantages of elimination of urea dissolving and solution storing steps, no water consumption, low energy consumption in a pyrolytic process, energy supply from a photovoltaic system, simple system technology, small floor area and low running cost.

The invention discloses a hand-push type brick paving machine which mainly comprising a machine body, wheels, a brick loading disc, a conveying belt, a slideway, a friction roller and a compaction mechanism and specifically comprises a small belt wheel, a compaction hammer connecting rod, a rear wheel, a compaction hammer, a large belt wheel, a gear pair, the friction roller, a gear coaxial with the friction roller, a front wheel, a large chain wheel, a small chain wheel, drums, the slideway, a guide wheel, an armrest, the brick loading disc, the machine body, the conveying belt, a rear axle, a front axle, a crankshaft, a bearing plate, a drum shaft, a chain, a triangular belt, a damping spring, a gear shaft and a crank. The machine goes forward when the armrest is pushed, the rotation of the wheels drives the whole machine to act, the conveying belt conveys bricks to the slideway, and the compaction mechanism compacts the bricks and the ground. By adopting the hand-push type brick paving machine disclosed by the invention, the brick paving operation in places such as both sides of an urban street and park paths can be finished simply by manually placing the bricks on the conveying belt of the machine and pushing the machine to go forward, and the problems that an existing brick paving machine is complicated in interior structure and high in cost and cannot be used for paving a sidewalk road and the like are solved.