34results about How to "Full and fast response" patented technology

The invention discloses a sewage treatment device which comprises a trash chamber and a purification box, wherein the trash chamber is provided with a trash chamber water inlet and a trash chamber water outlet; a first filtering net and a second filtering net below the first filtering net are arranged inside the trash chamber in an inclined manner; a first blow-down valve and a second blow-down valve are respectively arranged at the bottom ends of the first filtering net and the second filtering net; the trash chamber water outlet is connected with a purification box water inlet; the purification box is divided into three purification chambers, namely, a first purification chamber, a second purification chamber and a third purification chamber in sequence, through a first partitioning plate and a second partitioning plate; rotating nozzles are arranged at the upper parts of the first purification chamber and the second purification chamber; a purification box water outlet is formed in the bottom end of the third purification chamber. The sewage treatment device provided by the invention has the advantages that the structure is simple, a small space is occupied, the treatment time is shortened, the treatment effect is improved, the treatment cost is lowered, the effluent quality is improved, and the like.

The invention discloses a method for detecting the content of active calcium oxide and non-active calcium oxide in lime. The method comprises the steps of crushing lime until the particle diameter is less than or equal to 0.150mm, and drying at 105-110 DEG C for 1.5-2.5 hours; taking 0.5000g of a test sample, and mixing with a blend of 4g of anhydrous sodium carbonate and boric acid, fusing at 880-920 DEG C for 16-24 minutes, putting the fused blocks into 60ml of 8% hydrochloric acid and dissolving at 100-110 DEG C, enabling the volume of a solution to be constant by a 250ml volumetric flask so as to obtain a test solution a; taking 0.5000g of a test sample additionally, adding 5g of saccharose and 45-55ml of water which is boiled firstly and then cooled, vibrating closely for 18-22 minutes, enabling the volume of the solution to be constant by a 250ml volumetric flask so as to obtain a test solution b; removing 50.00ml of the test solution a and the test solution b, and respectively adding 5ml of triethanolamine and 20% potassium hydroxide or sodium hydroxide, so that the pH value of the test solution is greater than or equal to 12.5; then adding 4-5 drops of 1mg / ml magnesium oxide standard solution and 2-3 drops of calconcarboxylic acid, titrating the test solution by an EDTA standard solution until the test solution turns blue from red. The content of the active calcium oxide is calculated according to the following formula as shown in the specification, and the content of the non-active calcium oxide is calculated according to the following formula as shown in the specification, wherein W does not refer to CaO=WTCaO_WfCaO. The method is used for rapidly and accurately detecting the content of the active calcium oxide and non-active calcium oxide in a lime test sample, and is high in popularization and application value.

The invention discloses equipment and preparing method of aluminum oxide clinker through fusing method, which comprises the following parts: high-temperature fan, hot-air pipe, calcining kiln, rotary cloth tool, elevator, cooler, deduster, chimney, waste-gas fan, discharger, feed transmitter, exhaust gas pipe, upper and lower wind chamber, inlet and clinker outlet. The preparing method comprises the following steps: (1) grinding; (2) fusing to obtain aluminum oxide clinker; (3) cooling to obtain the self-powdered clinker of aluminum oxide.

Disclosed is a preparation method of a rod-like lithium disilicate crystal. The method comprises: performing wet ball-milling, drying and sieving of lithium carbonate and silica powder; mixing the dried and sieved mixed powder of raw materials and Na2SO4 via wet ball-milling by using zirconia balls, and performing drying and sieving; loosely putting raw powder of crystal seeds into an alumina crucible for sintering; finally cooling the obtained product to a room temperature to obtain the crystal seeds, and taking the crystal seeds out; stirring the crystal seeds in deionized water at a temperature of 60 DEG C to enable the crystal seeds to be fully dissolved; filtering the obtained solution; performing corrosion with 5 vol% of HF for 1-3h; washing the obtained product with deionized water; and drying the resultant product to obtain the Li2Si2O5 crystal. The rod-like lithium disilicate crystal obtained in the invention is controllable in length-diameter ratio and high in purity, can be taken as an enhancement phase and a toughening phase to be added into a composite material matrix, and has the characteristic of improving mechanical properties of a composite material.

The invention provides a procalcitonin collaurum (PCT) immune colorimetric determination detection kit and a preparation method thereof and belongs to the field of in vitro diagnostic reagent. The kit provided by the invention is based on a collaurum immune colorimetric method and comprises R1, R2 and PCT calibration substances, wherein the reagent R1 is arranged as a buffer solution containing surface active agent and the reagent R2 is arranged as solution containing the gold nanoparticle labeled with procalcitonin antibody. The invention also provides the preparation method for the kit. The kit provided by the invention has the characteristics of high sensitivity, strong specificity, high reaction speed and high stability; the kit is fit for various biochemical analyzers; after the reaction, the reaction cup is difficult to be polluted; the biochemical analyzer can be conveniently cleaned.

The invention relates to a clarification tank used for treating wastewater in photovoltaic industry. The clarification tank includes a tank body provided with a water inlet, a water outlet, and a sludge discharging port, a mechanical stirring lifting system arranged on the tank body and used for stirring wastewater in the tank body, and an agent supply system for supplying an agent to wastewater located in the tank body. The tank body is internally provided with a reaction chamber and a separation chamber that communicate with each other. The agent supply system communicates with the mechanical stirring lifting system via an agent supply pipe. The mechanical stirring lifting system includes a stirring mechanism, a stirring motor, and an agent spraying structure that is arranged on the stirring mechanism and used for spraying an agent supplied by the agent supply system to wastewater located in the tank body. In the clarification tank, an original agent supply system communicates with the mechanical stirring lifting system to completely mix wastewater located in the tank body with the agent, so that the reaction is fast fully performed, the flocculation is fast, and the wastewater treatment efficiency of the clarification tank is greatly improved. The state that the motor is tired of rotation is improved.

The invention discloses a monitoring and analyzing integrated detection device for steel-making wastewater. The detection device comprises a processor, a detection circulating mechanism, two one-way valve mechanisms, an air supply mechanism and a fishing mechanism are arranged in the processor, wherein the detection circulating mechanism comprises a liquid pump, an expansion spring, a cut-off plate, a rope and one of the one-way valve mechanisms; the air supply mechanism comprises a lifting plate, a chain, an elastic film, a friction plate and a lifting spring; the fishing mechanism mainly comprises a lifting rod, a movable plate, a string, a connecting block, a spring plate, two expansion springs, a limiting plate, a lifting plate, a trapezoidal rod, two magnets, a compression spring andtwo reset springs. Waste liquid is stirred through bubbles generated by introducing air, a reaction is more significant and quicker, when the reaction is generated, a reaction product is effectively removed in time, it is ensured that the reaction is normally carried out, the working efficiency is improved, after it is detected that the reaction is unqualified, the wastewater is treated again, andthe qualified rate of the discharged wastewater is ensured.

The invention relates to a preparation method and application of fluorinated graphene with high thermal stability, insulation and high thermal conductivity, and the preparation method comprises the following steps: placing dried graphene in a fluorination kettle, vacuumizing the fluorination kettle, introducing nitrogen into the fluorination kettle, pumping out the nitrogen, carrying out replacement treatment for multiple times, and heating the fluorination kettle; carrying out replacement treatment on the buffer kettle for multiple times, and then heating to the temperature the same as that of the fluorination kettle; introducing the fluoridation reaction mixed gas into the heated buffer kettle, keeping for 10-30 minutes, and carrying out thermal pre-dissociation, so as to convert part of fluorine gas molecules in the fluoridation reaction mixed gas into fluorine atoms; and introducing the fluoridation reaction mixed gas subjected to thermal pre-dissociation into the heated fluoridation kettle, and carrying out fluoridation reaction on the fluoridation reaction mixed gas and graphene for 0.5-2 hours to obtain the fluorinated graphene with high thermal stability, insulation and high thermal conductivity. The fluorinated graphene prepared by the preparation method disclosed by the invention has more uniform fluorine element distribution, so that the fluorinated graphene has a relatively uniform lattice structure and further has excellent heat-conducting property.

The invention discloses a method for recovering sodium nitrate from waste nitric acid, and relates to the technical field of waste nitric acid treatment. The method comprises the following steps: S1,preprocessing the waste nitric acid: cooling the collected waste nitric acid to 22-26 DEG C, carrying out filter pressing on the waste nitric acid through a filter press to separate out solid organicmatters in the waste nitric acid, carrying out solid-liquid separation to obtain liquid-phase waste nitric acid water and solid-phase organic matter impurities, and recycling the organic matter impurities. The invention discloses a method for recovering sodium nitrate from waste nitric acid. The filter pressing, solid-liquid separation, standing and filtering operations of the collected waste nitric acid can effectively remove the organic matter impurities, then high-concentration sodium bicarbonate obtained after pulping and washing is mixed and reacted with the waste nitric acid solution, and substances generated in the reaction are few, only are carbon dioxide and water, and are easy to treat, so the utilization rate of the waste nitric acid reaches the maximum; and the price of the sodium bicarbonate is lower than that of sodium carbonate and other substances, so the recovery cost of the waste nitric acid is reduced.

The invention belongs to a cross technology field of coal chemistry, chemical reaction project, plasma science and charcoal material science. It refers to a method and device for using coal and water steam as materials to produce foam charcoal material continuously. The method sprays powder coal and high temperature steam into direct current arc plasma and produce foam charcoal material continuously, the mixing, foaming, synthesizing charring and graphitizing are all completed in one step. The device is made up of steam generating and supplying system, coal powder transmitting system, plasma generator, solid collector, gas cooling and purifying system, explosion protection device, system pressure adjusting system and draught fan. The invention can be operated conveniently; it can be controlled, and can be operated continuously with low cost.

The invention discloses a waterproof antibacterial coating for exterior walls of buildings applied in a mycotic environment and a manufacturing method thereof. The waterproof antibacterial coating comprises three parts of a component A, a component B and a component C, wherein the component A is a viscous solution involving the steps that under the combined action of ligninase and diluted hydrochloric acid, an aqueous solution composed of acid-modified polysaccharides and trace useless water-soluble organic matters and water is acquired from schizonepeta stem and houttuynia cordata root, and after heating concentration is carried out, the viscous solution is obtained; the component B is a mixed liquid involving the steps that activated carbon micro powder, chitosan antibacterial gel and Bossini nano-latex paint are mixed in absolute ethyl alcohol and then react with sodium hydroxide, after heating steaming from ethyl alcohol is carried out at 60-70 DEG C, the mixed liquid of a hydroxylated organic matter and activated carbon powder is obtained; the component C is a mixed dry fiber involving the steps that the schizonepeta stem and the houttuynia cordata root are subjected to complete dehydration and then physical mixing, and the mixed dry fiber is obtained. The waterproof antibacterial coating for the exterior walls of the buildings applied in the mycotic environment and the manufacturing method thereof have the advantages that the manufacturing process is detailed and easy to implement, the antibacterial effect is good, the effect is lasting, and the waterproof antibacterial coating is green, environmentally friendly and pollution-free, has no pungent smell, is resistant to water, and has a self-cleaning function.

The invention relates to the technical field of white carbon black modification methods, in particular to a super-hydrophobic modification preparation method of nano hydrated silicon dioxide, which is characterized in that more than two preferably selected silane coupling agents are compounded and are subjected to gas-solid reaction with nano hydrated silicon dioxide, so that hydroxyl in the nano hydrated silicon dioxide is eliminated, and the nano hydrated silicon dioxide is changed into lipophilicity; in order to enlarge and deepen the application and field of preparation of high-temperature-resistant oil paint and environment-friendly waste oil absorption products, in the invention, after modification reaction is completed, a reaction kettle is subjected to primary pressure relief to remove most ammonia gas, then a pressure relief valve is closed, nitrogen is introduced into the reaction kettle to pressurize the reaction kettle again, pores are filled with the nitrogen, and the nitrogen is introduced into the reaction kettle to fill the pores; the residual ammonia gas is thoroughly removed through pressure relief and vacuumizing again, so that the purpose of preparing the super-hydrophobic nano hydrated silicon dioxide product is achieved, and the acid-base balance of a using system is not influenced.

The invention discloses a preparation method of palm oil fatty acid magnesium, which comprises the following steps: (1) introducing nitrogen into a reaction kettle to discharge oxygen, increasing thenitrogen flow during oxygen discharge, reducing the nitrogen flow after oxygen discharge, adding ethylene glycol polyoxyethylene ether and palm oil under the protection of nitrogen, and heating whilestirring to obtain a heated mixture a; (2) adding magnesium hydroxide into the mixture a prepared in the step (1), and stirring to obtain a mixture b; (3) heating the mixture b prepared in the step (2), adding water and maleic anhydride, keeping the temperature unchanged, increasing the rotating speed, and carrying out a stirring reaction to prepare a reactant; and (4) filtering and dehydrating the reactant prepared in the step (3), recovering maleic acid and ethylene glycol polyoxyethylene ether, and then introducing water for cooling while stirring to prepare palm oil fatty acid magnesium. The method is high in palm oil fatty acid magnesium production efficiency, suitable for large-scale production, low in environmental pollution, low-carbon and environment-friendly, and can be vigorously popularized and applied to feed additives.

The invention relates to a production device of isophthaloyl dichloride / paraphthaloyl chloride of a sanding raw material, and belongs to the technical field of chemical industry product production equipment. The production device solves the problem of low production efficiency of isophthaloyl dichloride / paraphthaloyl chloride in the prior art, and comprises: a mixing tank used for mixing thionyl chloride and solid m-phthalic acid / terephthalic acid and provided with an m-phthalic acid / terephthalic acid inlet pipeline and a thionyl chloride feeding pipeline, a sand mill used for grinding solid m-phthalic acid / terephthalic acid and communicated with the mixing tank through a pipeline, and an after-grinding material storage tank used for temporarily storing a grinded solid m-phthalic acid / terephthalic acid and thionyl chloride mixed liquid and communicated with the material outlet end of the sand mill through a pipeline.

The invention discloses a strength-toughness waterproof coating applied in indoor decoration and a manufacturing method thereof. The waterproof coating comprises two parts, one part is a viscous suspension obtained from heating concentration of a suspension composed of acidified modified methacryloxy light curing resin, chitin micro-powder, lignin decomposed polysaccharide, trace useless organic matters and minerals and water, wherein the acidified modified methacryloxy light curing resin is obtained from lobster shells, methacryloxy light curing resin and sawdust under the combined action oflysase, ligninase and dilute hydrochloric acid; the other part is a hydroxylated bisphenol A epoxy acrylate and hydroxylated 2-hydroxyl-1,2-diphenyl ethyl ketone aqueous solution obtained by dissolving bisphenol A epoxy acrylate and 2-hydroxy-1,2-diphenyl acetone in absolute ethyl alcohol, then undergoing a reaction with sodium hydroxide and then carrying out heating evaporation to remove ethyl alcohol. The strong-tough waterproof coating has the advantages of wide source, detailed and easily realized manufacturing process, quick effect, lasting effect, green and environmental protection, no pollution, high strength, good toughness and self-hydrophobicity.

The invention discloses a multi-stage injection type water-soluble waste gas recovery system and a waste gas recovery process, and belongs to the field of waste gas recovery. The multi-stage injection type water-soluble waste gas recovery system comprises an injector, the left end of the injector is fixedly connected with a flame arrester, the right side of the injector is fixedly connected with a gas inlet pipe, and the left end of the flame arrester is fixedly connected with a primary filter chamber through a communicating pipe; a first three-end communicating pipe is fixedly connected to the position, close to the top end, of the outer wall of the primary filtering chamber, measuring chambers are fixedly connected to the front ends of three branch pipes of the first three-end communicating pipe, and second three-end communicating pipes are fixedly connected to the front sides of the three measuring chambers; and the second three-end communicating pipes are connected with a first absorption tower and a second absorption tower through first two-end communicating pipes, the first absorption tower and the second absorption tower are connected with a water pump, and the water pump is connected with a liquid storage chamber. Through the primary filter chamber, the three measuring chambers and the absorption towers, waste gas is filtered and then fully mixed with an atomized solution, the contact degree of the solution and the waste gas is improved, the solution is saved, and waste is avoided.

The invention relates to a lime underfiring degree on-line detection device, comprising: a rack which is equipped with a weighing sensor and a reaction container supported on the rack through the weighing sensor; a filter screen which is arranged in the reaction container and divides the space in the reaction container into two parts, one part being a sample space for adding a lime sample, the other part being a filtrate space for allowing filtrate generated after the reaction of the sample and water to enter, and the sample space being communicated with the filtrate space through filter holes in the filter screen; a sample feeding hole which is communicated with the sample space and is used for adding a lime sample into the sample space; a water adding opening which is used for adding water into the reaction container; a residue outlet which is communicated with the sample space, is used for discharging sample residues in the filter screen, and is connected with a residue discharge valve hung on the reaction container; and a liquid outlet which is arranged at the bottom of the reaction container, is communicated with the filtrate space and is used for discharging the filtrate after the reaction.

A tunnel kiln reduction roasting method of high-valence manganese oxide ores includes evenly mixing the high-valence manganese oxide ores and sulphur to obtain a mixture; placing the mixture into a closed reaction tank and using a tunnel kiln for heating, reduction roasting and cooling; and cooling a roasting product under an air-free condition, using a dilute sulphuric acid solution to leach the roasting product, performing solid and liquid separation and subjecting a filtrate to purifying and impurity removing to obtain a manganese sulfate solution, wherein a leaching rate of manganese is over 90%. According to the tunnel kiln reduction roasting method of the high-valence manganese oxide ores, defects of high energy consumption and large dust capacity of existing reduction processes of a coal based rotary kiln method, a reverberating furnace method, a fluid-bed furnace / fluidization furnace method and the like are overcome; and the tunnel kiln reduction roasting method has the advantages of being simple in process, convenient to operate, low in cost, high in manganese conversion ratio, suitable for treating various high-valence manganese oxide ores including pyrolusite, psilomelane, hausmannite, braunite and the like and capable of easily achieving industrialization.

A method for preparing high-purity nano-selenium powder, comprising the following steps: 1) reacting crude selenium raw material and high-purity oxygen under the condition of microwave heating to generate selenium oxide, and the selenium oxide is sublimated; 2) sublimated selenium oxide and atomized water 3) After the reduction reaction is completed, it is passed into high-purity water and mixed to obtain a slurry, and the slurry is dried to obtain nano-selenium powder. The invention can prepare high-purity nano red selenium powder or nano gray selenium powder, the preparation method is simple and convenient to operate, the effective utilization rate of resources is high, and the production cost is low. Oxygen can be recycled, has little impact on the environment, and is suitable for popularization of production and application.

The present invention relates to the field of flue gas treatment, specifically a method for purifying industrial flue gas, including s1 to s4; the exhaust gas purification device used in the method includes an ammonia gas input pipe, a blower, a dust removal mechanism, a screw conveyor, a conveying mechanism, Catalytic plate, chimney, processing box and desulfurization mechanism; the mixture of ammonia gas and air can be passed through the ammonia gas input pipe with the blower, which is convenient for removing nitrate in the flue gas, and the dust removal mechanism can clean the dust in the flue gas To avoid blocking the subsequent reactor, the desulfurization mechanism realizes the removal of sulfur-containing substances in the flue gas. The flue gas desulfurization and denitrification equipment of the present invention installs the dust removal mechanism before the denitrification and desulfurization equipment to prevent dust from clogging the subsequent reaction vessel, which can make the internal gas mix more evenly and react more fully when in contact with the catalytic plate with a special structure.

The invention relates to the field of industrial flue gas treatment, in particular to an efficient denitration agent for waste incineration flue gas and a preparation method of the efficient denitration agent. The denitration agent comprises, by mass, 85-97% of a main denitration agent, 1-5% of a catalyst, 1-5% of a temperature auxiliary agent and 1-5% of other auxiliary agents, the main denitration agent is an amino-containing substance, and the temperature auxiliary agent is an alkali metal compound; according to the present invention, the alkali metal compound can broaden the temperature interval of the reaction of the main denitration agent and the NOx gas in the flue gas, such that the main denitration agent can completely and rapidly react with the NOx gas in the flue gas, the optimal reaction temperature of the main denitration agent and the NOx gas in the flue gas is reduced so as to improve the denitration rate to 80-95%, and the NOx emission limit of the reacted gas is less than 100 mg / Nm < 3 >.

The invention discloses a sludge profile control agent and a preparation method thereof, wherein the sludge profile control agent comprises 0.1-0.5% of a thickener, 0.01-0.2% of a crosslinking agent,oily sludge and water. A surfactant group is introduced into thickener molecules, the oily sludge can be effectively suspended and dispersed, and the crosslinking agent is a hydroxymethyl amine solution. The preparation method comprises the steps of mixing clear water and the oily sludge in accordance with the proportion evenly, firstly adding the crosslinking agent and stirring evenly, then adding the thickener, continuing to stir to obtain the sludge profile control agent having good injection performance; the sludge profile control agent has controllable gelling time, has relatively strongsealing and plugging ability and salt tolerance, and achieves deep profile control; the profile control agent realizes utilization of resources of the oily sludge, has no use of phenol and aldehyde products, and is an environmental-protection type profile control agent.

The invention discloses a method for detecting the content of active calcium oxide and non-active calcium oxide in lime. The method comprises the steps of crushing lime until the particle diameter is less than or equal to 0.150mm, and drying at 105-110 DEG C for 1.5-2.5 hours; taking 0.5000g of a test sample, and mixing with a blend of 4g of anhydrous sodium carbonate and boric acid, fusing at 880-920 DEG C for 16-24 minutes, putting the fused blocks into 60ml of 8% hydrochloric acid and dissolving at 100-110 DEG C, enabling the volume of a solution to be constant by a 250ml volumetric flask so as to obtain a test solution a; taking 0.5000g of a test sample additionally, adding 5g of saccharose and 45-55ml of water which is boiled firstly and then cooled, vibrating closely for 18-22 minutes, enabling the volume of the solution to be constant by a 250ml volumetric flask so as to obtain a test solution b; removing 50.00ml of the test solution a and the test solution b, and respectively adding 5ml of triethanolamine and 20% potassium hydroxide or sodium hydroxide, so that the pH value of the test solution is greater than or equal to 12.5; then adding 4-5 drops of 1mg / ml magnesium oxide standard solution and 2-3 drops of calconcarboxylic acid, titrating the test solution by an EDTA standard solution until the test solution turns blue from red. The content of the active calcium oxide is calculated according to the following formula as shown in the specification, and the content of the non-active calcium oxide is calculated according to the following formula as shown in the specification, wherein W does not refer to CaO=WTCaO_WfCaO. The method is used for rapidly and accurately detecting the content of the active calcium oxide and non-active calcium oxide in a lime test sample, and is high in popularization and application value.

The invention discloses a preparation device of calcium 2-hydroxy-4-methylthio-butyrate, which comprises a drying device, a mixing device with a liquid spray device, a screening device and a control device, wherein the mixing device is arranged in the drying device; the liquid spray device is connected to the mixing device; the screening device is arranged on the lower side of the drying device; and the control device controls the operation of the drying device, liquid spray device, mixing device and screening device. The preparation device has the advantages of quick and thorough reaction, high product yield, high drying speed and efficiency, low energy consumption, fewer product impurities, high purity, low waste / exhaust emission, high safety and environment friendliness, is convenient and easy to operate, and shortens the technical process.

The invention discloses a method for preparing iron phosphate from a nickel-iron alloy, which comprises the following steps of: simultaneously adding a nickel-iron leaching solution, an oxidizing agent and a precipitating agent at a certain feeding rate for reaction, while in the prior art, directly taking a nickel-iron solution as a reaction base solution, and directly adding the oxidizing agent and the precipitating agent into the base solution; and iron phosphate particles are directly generated in the base solution. Compared with the method of directly using the ferronickel leaching solution as the base solution for reaction, the method disclosed by the invention has the advantages that the feeding rate of the ferronickel leaching solution can be well controlled, the whole reaction system is more convenient to control, the reaction is quicker and more sufficient, in addition, more importantly, the content of S and Ni in the reaction system is greatly reduced, the entrainment of S and Ni in iron phosphate is reduced, and the yield of the ferronickel leaching solution is increased. And the quality of an iron phosphate product is effectively improved.

The invention relates to a preparation method of high-purity nano-selenium powder, which comprises the following steps: 1) reacting a crude selenium raw material with high-purity oxygen under the condition of microwave heating to generate selenium oxide, and sublimating the selenium oxide; 2) combining sublimated selenium oxide with atomized water, and then performing a reduction reaction with anatomized reducing agent; and 3) after the reduction reaction is finished, introducing the product into high-purity water, mixing to obtain slurry, and drying the slurry to obtain the nano-selenium powder. The high-purity red nano selenium powder or grey nano selenium powder can be prepared, the preparation method is simple and convenient to operate, the effective utilization rate of resources is high, the production cost is low, the invention further relates to a system for preparing the nano selenium powder, high-purity oxygen in the system can be recycled, the influence on the environment issmall, and the method and the system are suitable for popularization, production and application.

The invention relates to the field of flue gas purification, in particular to an acid-making tail gas purification and white gas removal device. Comprising a purification device, a stirring device and a demister, the purification device comprises a purification cylinder, a flow guide plate, a spraying structure and a precipitation structure, the flow guide plate is a vertical plate with a vortex-shaped cross section, and a limestone solution enters a reaction cavity from a liquid inlet in the center of the reaction cavity after being stirred by the stirring device and flows in a vortex shape from inside to outside along the flow guide plate; tail gas enters the reaction cavity from the gas inlet in the outer side of the reaction cavity, advances in a vortex shape from outside to inside along the guide plate, is subjected to purification reaction with a sprayed limestone solution and then is discharged from the gas outlet, and the vortex-shaped reaction cavity increases the space and stroke of gas-liquid reaction under the condition of the same equipment and the same volume. And purification and absorption of sulfur dioxide and other substances in the tail gas are promoted. Meanwhile, the reacted limestone solution flows back to the stirring device to be stirred again, disturbance to precipitates is avoided, and generation of precipitate crystallization is facilitated.

The invention discloses a preparation method of palm oil fatty acid zinc, which comprises the following steps: (1) introducing nitrogen into a reaction kettle to discharge oxygen, increasing the nitrogen flow during oxygen discharge, reducing the nitrogen flow after oxygen discharge, adding ethylene glycol polyoxyethylene ether and palm oil under the protection of nitrogen, and heating while stirring to obtain a heated mixture a; (2) adding zinc oxide into the mixture a prepared in the step (1), and stirring to obtain a mixture b; (3) heating the mixture b prepared in the step (2), adding water and butanedioic anhydride, keeping the temperature unchanged, increasing the rotating speed, and carrying out a stirring reaction to prepare a reactant; and (4) filtering and dehydrating the reactant prepared in the step (3), recovering succinic acid and ethylene glycol polyoxyethylene ether, and then introducing water for cooling while stirring to prepare palm oil fatty acid zinc. The zinc content of the palm oil fatty acid zinc prepared by the process disclosed by the invention is as high as 13.96% or above, and the requirement of applying the palm oil fatty acid zinc to a feed additive can be met.