334results about How to "Enhance the destructive effect" patented technology

The invention discloses a method for willow artwork dyeing through a natural indigo pigment. The method comprises the following aspects that (1) indigo extraction is conducted, specifically, a plant raw material is subjected to crushing, fermentation, water soluble extraction and low-temperature drying, and the indigo pigment is prepared; (2) acid-alkali steeping is conducted, specifically, a hydrochlric solution with the concentration being 0.3-0.4% and a sodium hydroxide solution with the concentration being 0.25-0.3% are used to steep a willow artwork correspondingly; (3) cooking for impurity removal is conducted, specifically, impurities in the willow artwork is removed through cooking; (4) steaming for dyeing is conducted, specifically, the indigo pigment with the mass being 11-13% that of distillation boiler water is added, and steam dyeing is conducted; (5) low-temperature drying is conducted, specifically, the dyed willow artwork is dried; (6) infrared color fixing is conducted, specifically, the willow artwork is wrapped through mixed slurry and placed under infrared lamplight with the illumination intensity being 470-520 lux for color fixing; (7) ultraviolet inspection is conducted, specifically, the willow artwork subjected to color fixing is placed under an ultraviolet lamp, and the color fixing condition is inspected; and (8) tung oil layer coating is conducted, specifically, the willow artwork qualified after inspection is coated with tung oil, and after drying, the willow artwork with the natural indigo pigment is prepared.

The invention discloses a modified asphalt coating material and a preparation method thereof and a mineral pellet-modified asphalt waterproof coil material and a preparation method of the mineral pellet-modified asphalt waterproof coil material. The modified asphalt coating material includes: in parts by mass, 45-50 parts of petroleum asphalt, 5-10 parts of hot-mix asphalt, 12-15 parts of SBS, 2-4parts of polyethylene wax, 2-5 parts of tackifying resin and 20-35 parts of filler. Through the mineral pellet-modified asphalt waterproof coil material, the defects of insufficient base strength ofexisting waterproof coil materials, poor adhesion of mineral pellets, no owning of fluidity and heat resistance of the coating material and the like can be overcome, the use demands of passive buildings for special mineral pellet surface modified asphalt waterproof coil materials can be satisfied, and the gap in the domestic market is filled up, so that a relevant technology is provided for special waterproof coil materials of passive buildings in China, a guiding significance is achieved.

The invention relates to a method which can recycle waste liquor discharged in a molasses alcohol production process in a simple, safe and environmentally-friendly way. Alcohol waste liquor is delivered to a field which is to be ploughed and planted or is planted with crops by a tank truck and sprayed onto the ground; and after being fully contacted with the air, the waste liquor is fermented and oxidized rapidly, so that the effects of fighting against drought, conserving water, enriching soil and improving the soil are achieved and 5 to 15 tons of waste liquor is applied to every mu (666.7 mm<2>) of the field. The method has the characteristics of safely treating the alcohol waste liquor in time, eliminating a sewage treatment system with a high investment, improving the microorganism environment of the soil, enhancing soil fertility and realizing cyclic economy, along with simpleness, practicability, a small number of investments, no environmental pollution and full utilization of the alcohol waste liquor.

The invention discloses a medium-frequency-agile all-fiber coherent wind lidar system. A microcontroller module in a tunable fiber laser controls frequencies of output laser light of a first light source and / or a second light source to achieve agility of the frequencies of medium frequency signals. The medium-frequency-agile all-fiber coherent wind lidar system has the advantages that the system can be for high purposes in complex electromagnetic environments, on one hand, other electronic equipment being operated in medium-frequency bands can be prevented from interfering normal operation of a lidar by tuning the frequencies of the medium-frequency signals of the lidar, so that anti-electromagnetic interference or destruction capability of the lidar system is improved; on the other hand, when the operating medium-frequency signals of the lidar and operating frequency bands of the surrounding other equipment are in interference, the frequencies of the medium-frequency signals of the lidar can be tuned to prevent the lidar from interfering or destructing normal operation of the other electronic equipment when the lidar is in normal operation.

The invention discloses a medium-high temperature SCR denitrification catalyst with an effect of resisting alkali metal poisoning and a preparation method of the medium-high temperature SCR denitrification catalyst with the effect of resisting the alkali metal poisoning. The catalyst is prepared from the following components in percentage by mass: 1 percent of V2O5, 5 percent of WO3, 10 percent of CeO2, and the balance of TiO2. The preparation method of the catalyst comprises four steps: preparation of impregnation liquid, supporting of active components, ultrasonic impregnation and roasting. The catalyst disclosed by the invention is modified by the added CeO2; more surface acid sites and chemical adsorption oxygen are formed to facilitate adsorption and oxidation of NH3 on the surface of the catalyst; by using a V-O-Ce active center formed by a synergistic effect between V and Ce, the active center of the V can be effectively prevented from being damaged by alkali metal, and further denitrification performance and performance of resisting the alkali metal poisoning are greatly improved. The preparation method of the catalyst, disclosed by the invention, is simple, distinct in flow, easy to operate and safe; the prepared catalyst has remarkable advantage in flue gas of which the content of the alkali metal is higher.

The invention relates to a multi-axis low-rotating-speed spiral rotor in a heat exchange tube. The multi-axis low-rotating-speed spiral rotor mainly comprises a hollow shaft, turbulence shafts and spiral blades, wherein the spiral blades are positioned on the surface of the hollow shaft; the outer diameter of each spiral blade is smaller than the inner diameter of the heat exchange tube; the surface of each spiral blade is smooth; the spiral blades take a shape of spiral around the hollow shaft; a turbulence shaft structure is arranged on an upstream face of the spiral blades in the axial direction of the hollow shaft, so as to effectively increase tangential velocity and radial velocity of fluid; the cross sections of the turbulence shafts are partially circular or partially oval; the axial length of each turbulence shaft is equal to or smaller than that of each spiral blade; the turbulence shafts and the hollow shaft are parallel or form included angles with a certain degree; and a downstream face of the spiral blades does not have the turbulence shaft structure so as to reduce pressure loss when the fluid passes the rotor. According to the invention, the bending direction of crimping edges at the tops of the spiral blades is opposite to rotating direction of the spiral blades, so that on the premise of not increasing radial height of the blades, the radial velocity of the fluid is increased, the axial acting force of the rotor is reduced, the radial perturbation of the rotor to the fluid is enhanced, and the self-aligning effect is good.

The invention provides a hard rock cutterhead and a cantilever heading machine comprising the same. The hard rock cutterhead comprises a conical cutterhead main structure; the cutterhead main structure comprises a head, spokes and a flange; the head is connected with the spokes, the spokes are connected with the flange, and the head and the spokes are provided with detachable cutters. The cantilever heading machine comprises the hard rock cutterhead. The hard rock cutterhead and the cantilever heading machine comprising the same have the advantages that the stress of the cutterhead structure is more uniform, the deformation resistance and break resistance are high, and the high-thrust high-rotation-speed excavating working condition can be borne; the cutterhead is formed by machining a complete plate or welding steel plates, and the overall strength and stiffness are better; the cutters adopt the form that end covers are located on cutter seat installation surfaces, and the rock breaking efficiency can be improved; a cutterhead center hobbing cutter can be drawn back when the cutterhead conducts swing cutting, and eccentric abrasion, cutting edge breaking and other abnormal damageoccurring to the center hobbing cutter are effectively avoided; hobbing cutters and toothed cutters are subjected to interchange installing, soft soil excavation can be achieved, and in addition, hardrock can be subjected to expanding excavation; and the cutterhead swings up and down as well as leftwards and rightwards, and round and special-shaped fracture surfaces can be excavated.

The invention discloses a method for preparing an SSZ-39 molecular sieve by taking a fluorine-modified Y-type molecular sieve as a raw material. The method comprises the following steps: dipping a Y-type molecular sieve in a fluorine-containing aqueous solution, and drying and roasting the Y-type molecular sieve to obtain a fluorine-doped Y-type molecular sieve; mixing and stirring deionized water, an alkali source, a template agent and a silicon source well in proportion, and adding the fluorine-doped Y-type molecular sieve to prepare sol; and transferring the sol into a crystallization kettle, filtering, washing and drying the crystallization product after complete crystallization, carrying out ion exchange, and carrying out roasting to obtain a hydrogen type SSZ-39 molecular sieve. According to the invention, the Y-type molecular sieve raw material is modified by a fluorine doping method, so that the SSZ-39 molecular sieve can be prepared by complete crystal transformation in a short time under the condition of relatively low silica-alumina ratio, and the raw material and production costs can be obviously reduced. The SSZ-39 molecular sieve prepared by the method has the characteristics of short crystallization time, high crystallinity, controllable grain size, good grain dispersity and the like, and can be applied to the fields of methanol-to-olefin reaction, carriers of selective catalytic reduction catalysts and the like.