55results about How to "Extended reaction time" patented technology

The application provides a preparation method of a two-dimensional layered silicate mineral film treated by a reducing modifier, which comprises the following steps: firstly, organic modification of a two-dimensional layered silicate mineral by a reducing ionic liquid; then, loading of the reducing modifier into the interlayer of the two-dimensional layered silicate mineral; and finally, construction of a two-dimensional channel by vacuum filtration to prepare a film with a thickness of 5-20 microns. The two-dimensional layered silicate mineral film obtained by the method has a large surface area and can effectively treat heavy metal Cr(VI). The construction of the two-dimensional channel provides a limited space for the reducing modifier to prevent oxidation and provides abundant sites for the oxidation-reduction reaction in the nanopore channel, and solves the problems of desorption difficulty and secondary pollution caused by the traditional adsorption method for treating heavy metals.

The invention discloses a method for synthesizing ziram. The method comprises the following steps: S1, stirring a compound surfactant and zinc oxide to obtain a dispersion liquid; s2, sealing and pressurizing, and adding dimethylamine for reaction to obtain a dimethylamine salt mixture; and S3, dropwise adding carbon disulfide, performing condensation reaction, and removing impurities to obtain the ziram, wherein the compound surfactant contains at least one of a nonionic surfactant, an anionic surfactant or a macromolecular surfactant. According to the method, the efficient and green synthesis of the ziram is realized through the synergistic effect of a compound surfactant system, a sealed pressurized reaction and a progressive charging sequence.

The application discloses a kind of plasma generator and rare fuel combustion device, belong to plasma combustion-supporting technical field.The plasma generator uses innovative four-stage electrode cascade discharge structure, including shell, first electrode, second electrode, third electrode, fourth electrode and flow guide helix.First, second electrode generates low-temperature plasma to carry out preliminary activation cracking to gas-air mixture;Third, fourth electrode generates high-temperature plasma to carry out depth catalysis and directly ignites, forms the cascade process of "first activation, then ignition", significantly improves gas molecule activation efficiency.The taper flow channel of device shell and trapezoidal combustion chamber structure optimize the air flow and anchor flame, enhance stability.The rare fuel combustion device containing the generator integrates precise gas supply system and intelligent ignition control system, can automatically adjust gas-electricity parameters according to combustion state, realizes the efficient, clean, stable combustion of gas.

Micro-droplet double-strengthened liquefied gas desulfurization reactor, reaction system and reaction method relate to the field of liquefied gas desulfurization treatment, the desulfurization reactor has liquefied gas liquid discharge port in the upper part and amine liquid discharge port in the lower part, the desulfurization reactor has amine liquid area in the lower part, liquefied gas liquid area in the upper part and mixing area formed by the junction of amine liquid area and liquefied gas liquid area, the liquefied gas liquid area is provided with amine liquid nozzle capable of spraying amine liquid droplets, the amine liquid area is provided with liquefied gas liquid nozzle capable of spraying liquefied gas droplets, the pressure environment in the desulfurization reactor is 1.6 MPa or more, so as to keep the liquefied gas liquid entering the desulfurization reactor in liquid phase state, the liquefied gas droplets are desulfurized and mass transfer in the amine liquid area and flow upwards, sequentially contact and react with amine droplets in the mixing area and amine droplets in the liquefied gas liquid area, and complete the desulfurization treatment of liquefied gas. The present application is used to solve the problems of slow desulfurization speed and poor desulfurization effect of hydrogen sulfide in liquefied gas in the removal process.

The utility model relates to the field of refrigerator waste gas treatment, in particular to a heat storage type incinerator system for refrigerator broken waste gas treatment, which comprises a bag-type dust collector, a heat storage combustion furnace and an absorption tower, the bag-type dust collector is connected to the bottom of the heat storage combustion furnace through a waste gas guide pipe, and a liquid guide pipe is arranged at the bottom of the heat storage combustion furnace; the liquid conduit is connected to the absorption tower, the bag-type dust remover comprises a dust removal chamber and a dust removal barrel, the dust removal chamber is provided with dust removal cloth, the dust removal barrel is mounted at the bottom of the dust removal chamber, the waste gas conduit is connected to the top of the dust removal barrel, waste gas is fed into the heat storage combustion furnace through the blower, and the heat storage combustion furnace is connected to the bottom of the absorption tower through the gas conduit; the absorption tower is provided with a filling layer which is provided with a plurality of filling holes; a liquid sprayer is arranged at the top of the filling layer and is used for spraying a sodium hydroxide solution; the top of the absorption tower is connected with an exhaust chimney through an exhaust conduit. The device has the effect of reducing equipment corrosion caused by waste gas.

The application discloses a kind of fresh wet noodles preservation plasma activation water cavitation system and method, the system includes high-frequency low-voltage driving power supply, embedded central processing unit, fluid pipeline, multistage cavitation reaction device, microchannel ozone generation device, mounting platform and magnetic control type gas flow proportional regulating valve.System utilizes microchannel discharge technology to generate ozone efficiently, and realizes multistage mixing and cavitation reaction of ozone and clean water by multistage alternating steady flow cavity and throat structure, to generate hydroxyl radical.Electrochemical detection unit integrated in the tail of system can monitor hydroxyl radical concentration on-line in real time, and embedded central processing unit dynamically regulates the opening of magnetic control valve according to monitoring data, to accurately adjust ozone dosage, to form closed-loop intelligent control.The application realizes the integration of hydroxyl radical generation, on-line sensing and process control, and the generated plasma activation water significantly improves the fresh wet noodles preservation capacity.

The invention discloses a self-heating type biomass pyrolysis-gasification poly-generation system and method, belongs to the technical field of biomass energy conversion, and aims to reduce energy consumption and improve the reaction rate of pyrolysis carbon gasification. According to the system, the combustor is selected as an external heat source, gasified gas and non-condensable gas generated in the pyrolysis process can be used as fuel of the combustor, heat energy is provided for the rotary kiln reactor and the gasifier reactor, self heat supply of the system is achieved, and energy consumption is remarkably reduced. The material guide plates are obliquely arranged downwards, and the material guide plates in the two rows of material guide plate groups are arranged in a staggered manner in the height direction of the reaction cavity of the gasification furnace, so that a wave-shaped reaction runner is formed in the reaction cavity of the gasification furnace, and the reaction time can be effectively prolonged; meanwhile, the arranged driving mechanism can drive the material guide plate to swing up and down around the hinged part at the upper end of the material guide plate, so that the gasification retention time of the pyrolytic carbon can be controlled, the pyrolytic carbon can be scattered and prevented from caking, the rapid and sufficient reaction of the pyrolytic carbon and the gasifying agent is promoted, and the gasification rate is increased.

This invention discloses a height-adjustable air cushion for car seats, relating to the field of automotive accessories. It includes a seat body, a fixed housing fixedly connected to the top of the seat body, and protective housings fixedly connected to both ends of the top of the fixed housing. A backrest cushion is located on the top of the seat body, adjacent to one side of the seat cushion. Three air cushion bodies are located inside both the top of the fixed housing and the backrest cushion. A seat cushion is placed on top of the air cushion bodies, between the two protective housings. Ventilation holes are evenly spaced at the top of the seat cushion. A controller is fixedly installed on the outside of the seat body, and a cavity is formed inside the fixed housing. The advantages of this invention are: it can absorb and filter odors inside the car, and simultaneously mix the filtered gas with fragrance gas. The mixed gas is then sprayed towards the driver's thighs through a nozzle, effectively removing odors while also providing important heat dissipation.

The invention discloses a micro-channel reaction tube and a micro-channel reactor, and relates to the technical field of reactors, the micro-channel reaction tube comprises a tube body, a plurality of sub-reaction flow channels are formed in the tube body, and the sub-reaction flow channels are sequentially communicated along the axis direction of the tube body so as to form a micro-reaction flow channel for reactants to flow; each sub-reaction flow channel comprises a reaction chamber, a feeding flow channel, a discharging flow channel and a division flow channel, the reaction chamber is provided with a communication port, the feeding flow channel is communicated with the communication port, the division flow channel is provided with a feeding port and a discharging port, the feeding port is arranged around the periphery of the feeding flow channel and is communicated with the communication port, the discharging port is communicated with the discharging flow channel, and the division flow channel is communicated with the discharging flow channel. In any two adjacent sub-reaction runners, the discharging runner of the sub-reaction runner located at the upstream is communicated with the feeding runner of the sub-reaction runner located at the downstream. The micro-channel reactor provided by the invention can effectively improve the mixing uniformity of reactants and effectively improve the reaction efficiency.

The utility model is suitable for wastewater treatment technical field provides a kind of ammonia-containing wastewater multi-effect treatment system, including tower body;Fixedly connected in the pollution pipe of the tower body bottom end one side, the lower end of the tower body inner wall is fixedly connected with aeration disc, the aeration disc one side is fixedly connected with the air inlet pipe extending to tower body outside;Fixedly connected in the packing seat of the tower body inner wall lower end, equal-angle hole is opened in the packing seat, the water distribution tray is fixedly connected in the tower body inner wall above the packing seat, the water distribution tray top end is fixedly connected with the inlet pipe extending to tower body outside.This scheme provides the ammonia-containing wastewater multi-effect treatment system using spiral groove makes the water of wall flow to guide flow tower body central position, instead of making it linear drop, and packing seat top end is circular truncated cone, further makes the water dispersion accumulated, prevents wall flow effect, simultaneously using cleaning assembly can scrape and clean to the tower body inner bottom wall, reduces the deposition adhesion of impurity.

The application discloses a countercurrent submerged hot steel slag treatment coupled industrial flue gas carbon capture system and method, and belongs to the technical field of industrial solid waste and waste gas resource treatment. The system comprises a hot stewing pool, a slag cover, a matrix type water and gas distribution system, an industrial flue gas supply unit, a micro-nano bubble generating device, a waste heat recovery device and a control unit. The method is that the matrix type water and gas distribution system is used to pass cooling water and industrial flue gas water solution rich in micro-nano bubbles into hot steel slag from the pool bottom in a region-by-region and time-by-time manner, and countercurrent submerged cooling stewing slag and carbonation carbon fixation reaction are sequentially carried out. The application solves the problems of poor safety, low resource recovery rate and high carbon capture cost of the traditional hot stewing process, and provides a safe, efficient and low-cost steel slag and flue gas collaborative treatment solution.

The utility model discloses a submersible jet flow ozone aerator for treating aquaculture wastewater, and relates to the technical field of wastewater treatment equipment. The device comprises an oxygen bottle, an ozone generator, a water tank, a high-pressure water pump, a water valve and a combined micro-nano bubble generator, the combined micro-nano bubble generator comprises a first generator, a second generator and a third generator which are sequentially in threaded connection, the end, away from the second generator, of the first generator is sleeved with an inlet end cover in a threaded mode, the end, away from the first generator, of the inlet end cover is provided with a liquid inlet pipe, and an aeration assembly is arranged in the liquid inlet pipe. The end, away from the second generator, of the third generator is sleeved with an outlet end cover. Ozone-based micro-nano bubbles are obtained through the aeration assembly and the combined micro-nano bubble generator, the reaction time of ozone in the bubbles in water is prolonged, and breeding wastewater and the ozone are fully mixed and contacted.

The invention discloses a flue gas purification system, and relates to the technical field of chemical acid making equipment, and the flue gas purification system comprises a dynamic wave washing tower, a circulating pump, a settler and a high-level water tank; the dynamic wave washing tower comprises a tower body and a reverse spraying pipe, the reverse spraying pipe is communicated with the tower body, the reverse spraying pipe comprises a spraying head and an overflow groove, the overflow groove is located at the top of the reverse spraying pipe, and an overflow weir is arranged on the inner side wall of the overflow groove; the input end of the circulating pump is connected with the bottom of the tower body through a pipeline; the output end of the circulating pump is connected with the overflow groove and the spray header through pipelines; the settler is connected between the output end of the circulating pump and the bottom of the tower body through a pipeline, and the settler is provided with a settling drain outlet; the high-level water tank is connected with a water supplementing pipe, the bottom of the high-level water tank is connected with an overflow tank through a pipeline, and an emergency valve is arranged between the bottom of the high-level water tank and the overflow tank; the technical scheme provided by the invention aims to reduce system function decline caused by dust deposition.

This invention relates to the field of industrial wastewater treatment technology, and specifically discloses a method for the synergistic treatment of wastewater containing hexavalent chromium and alkaline slag wastewater. It includes: 1. Injecting the hexavalent chromium-containing wastewater into a reaction vessel and stirring; slowly adding the alkaline slag wastewater in small amounts multiple times through a pipeline extending to the bottom of the solution, controlling the addition time to 1 minute each time with 5-minute intervals, ensuring that the hexavalent chromium content in the mixed solution is below 0.5 mg / L; 2. Adding ferric chloride solution during the reaction to maintain the pH at 2-3; after the reaction is complete, adjusting the pH to 8-9 with the alkaline slag wastewater; 3. After cooling, adding PAC solution in proportion; after the reaction, pressing and filtering; incinerating or landfilling the filter cake; and desalinizing the filtrate; 4. Desalinizing through triple-effect evaporation; rigidly landfilling the waste salt; and biochemically treating the condensate. This invention achieves "waste-to-waste treatment," reduces treatment costs, inhibits hydrogen sulfide spillage to ensure safety, achieves treatment standards, has a simple process that is easy to industrialize and promote, and possesses good environmental and social benefits.

The utility model relates to the technical field of reactors, in particular to an adjustable vertical pipe continuous liquid-liquid reaction device. Comprising an inner device assembly and an outer device assembly, the inner device assembly is composed of a gas conveying pipe, a device cover, a liquid conveying pipe and an inner plate, the outer device assembly is composed of an outer plate and a liquid outlet, gas conveying disturbance is conducted through the adjustable gas conveying pipe, the problem that reactants are not fully mixed is solved, the inner device structure and the outer device structure are adopted, the reaction path is increased, and the reaction time is prolonged; the problem of insufficient reaction is solved, and then the problems that reactants are not fully mixed due to the fact that an existing reactor promotes two-phase contact reaction by means of gravity or a static mixer, and meanwhile the reaction is not sufficient due to the fact that the flow speed of fluid in the reactor is too high can be solved.

A method for recovering organic tin in a vinyl ether compound transesterification kettle liquid, comprising the following steps: 1) taking the vinyl ether compound transesterification kettle liquid, cooling to-10-40 DEG C, standing, until crystals are precipitated in the transesterification kettle liquid, filtering, or, cooling to-10-40 DEG C, adding 0.1-5% of organic tin powder in mass fraction to the transesterification kettle liquid, stirring and mixing uniformly, then standing, until crystals are precipitated in the transesterification kettle liquid, filtering; 2) adding a basic solution with a concentration of 5-8 wt% to the crystals obtained by filtering, in a mass ratio of 1:0.5-10, and heating to 25-60 DEG C, until flocculent substances appear on the surface of the basic solution, and filtering the lower aqueous phase; 3) washing the crystals obtained by filtering with water, then washing with an organic solvent, drying, to obtain organic tin. The process condition is mild and the operation is convenient, the recovered organic tin can be used repeatedly, the production cost of enterprises is reduced, and environmental pollution is avoided.

This invention discloses an energy coordination and neutral point balance control method applied to a bidirectional energy storage converter. Specifically, the difference between the voltage difference of the voltage divider capacitors and the standard deviation value (0) of the bipolar DC microgrid is subtracted, and this difference is used to generate a voltage equalization control signal after passing through a voltage regulator. This voltage equalization control signal is then subtracted from the neutral point current, and the result is used to generate an improved voltage equalization control signal through a current regulator. This improved voltage equalization control signal is added to the bus voltage control signal and transmitted to a PWM pulse signal generator to generate pulses that control the DC / DC converter. This invention employs a three-level bidirectional DC-DC energy storage converter method to suppress the neutral point voltage offset problem and proposes an improved current loop voltage equalization control loop. Compared with traditional voltage equalization control loops, the proposed voltage equalization strategy has a better effect on voltage imbalance problems.

The invention discloses a waste gas treatment device for non-woven bag production, and particularly relates to the technical field of waste gas treatment.The waste gas treatment device comprises a conveying pipe, the conveying pipe is connected with a non-woven bag production device, the other side of the conveying pipe is fixedly connected with a first treatment mechanism, and the right side of the first treatment mechanism is fixedly connected with a dehumidification filtering mechanism; the middle of the right side of the dehumidification filtering mechanism is fixedly connected with a matching mechanism. According to the waste gas treatment device for non-woven fabric bag production, firstly, waste gas is subjected to acid-base neutralization to remove acidic harmful components, synchronous cooling treatment is conducted, the reaction time is prolonged, the basic purification effect is improved, then the waste gas makes uniform contact with an adsorption material through multi-path split-flow transmission, residual harmful gas is fully adsorbed, and the waste gas treatment effect is improved. Finally, fine particles are efficiently removed through a rotary capturing structure, attached particles are promoted to fall off and be recycled through the vibration effect, a single power source drives multiple structures to operate cooperatively, energy consumption is reduced, waste gas leakage is avoided through whole-process closed treatment, and it is ensured that exhausted gas meets the environmental protection standard.

The invention relates to the technical field of aromatic amine preparation, and discloses a preparation method of naphthalene diamine, which comprises the following steps: in the presence of a catalyst and an auxiliary agent, enabling naphthalene diphenol to react with an ammoniation reagent to prepare the naphthalene diamine, the auxiliary agent comprises hydrophosphite and / or hydrophosphate. It needs to be explained that direct ammoniation of the naphthalene diphenol is not easy, so that hydrogen ions are introduced with the hydrogen phosphite and / or the hydrogen phosphate as an auxiliary, the hydrogen ion concentration is increased, after the hydrogen ions are combined with the naphthalene ring or hydroxyl of the naphthalene diphenol, the naphthalene ring electron density is reduced, the ammoniation step can be more easily carried out, and then the reaction time is shortened. If the concentration of hydrogen ions in the added auxiliary agent is too high, the hydrogen ions preferentially react with the ammoniation reagent to form ammonium ions, so that free ammonia molecules are reduced, the reaction time is prolonged, and the yield of the naphthylenediamine is reduced.

The invention relates to a transmission electron microscope high-resolution in-situ dual-temperature-zone chip and a preparation method thereof. The transmission electron microscope high-resolution in-situ dual-temperature-zone chip comprises an upper chip and a lower chip, the upper chip and the lower chip are connected through a gasket to form a gas flow channel; a sample groove structure is arranged on the surface of the lower chip; the lower chip comprises two independently controlled heating areas, namely a high-temperature area and a low-temperature area, the high-temperature area is used for evaporating a solid precursor, the low-temperature area is used for observing material deposition and reaction, and a controllable temperature gradient is formed between the high-temperature area and the low-temperature area. According to the invention, a real CVD temperature gradient is simulated in a TEM cavity through double-temperature-zone layout and independent temperature control, so that in-situ observation of gas-solid reaction under an atomic scale is realized; the shallow slot design prolongs the reaction time and improves the experiment reliability; the heater ensures high-temperature stability; the chip provides an advanced experimental platform for CVD mechanism research and process optimization.

This invention discloses a method for preparing naringin-4'-β-neohesperidin from root bark, belonging to the field of organic chemical synthesis technology. This preparation method can hydrolyze naringin at a lower temperature to generate naringin-4'-β-neohesperidin from root bark. The whole process has few side reactions, high product yield, and less environmental pollution. The method includes the following steps: (1) Dissolving naringin in an ethanol aqueous solution; (2) Adding potassium hydroxide-supported alumina to the solution obtained in step (1) and heating to react; (3) Filtering the reaction solution obtained in step (2) and concentrating the filtrate until there is no ethanol in the solution; (4) Cooling the concentrated solution obtained in step (3) and allowing it to stand to crystallize; (5) Filtering the crystals obtained in step (4), washing with water and drying to obtain the finished product.

The invention discloses a circulating fixed bed. The circulating fixed bed is used for circularly producing a carbon material and comprises a temperature control body, at least one temperature control section reactor and a controller, the reactor is at least partially located in the temperature control body, and the temperature control body controls the temperature of each temperature control section reactor; the reactor comprises a rotating body and pipes AB, the pipes AB comprise a pipe A and a pipe B, and the pipe A and the pipe B are arranged in a sleeving mode and move relatively; and the controller controls materials to enter the A pipe and the B pipe to react to generate a carbon material, the controller controls the rotating body to rotate to drive the A pipe to rotate relative to the B pipe so as to feed and discharge the material, and the A pipe forms different angles relative to the B pipe in cycles so as to achieve cyclic production of the carbon material. The problems of energy conservation, environmental protection, high yield and homogenization in the prior art can be solved.

The utility model belongs to the technical field of wastewater treatment, in particular to wastewater treatment equipment based on UV (ultraviolet) photolysis deodorization, which comprises a wastewater treatment tank and two UV photolysis deodorization lamps, a seal cover is fixed at the top of the wastewater treatment tank in a threaded connection manner, a guide shell is fixedly connected at the top of the seal cover, and a deodorization component is arranged at the top of the wastewater treatment tank. Odor is guided by the upper partition plate and the lower partition plate to flow in a snakelike mode in the box body, the odor sequentially flows through the two deodorization spaces and then is exhausted outwards, when the odor enters the first deodorization space, the two angular inflation blocks and the inflation cushion are inflated and expanded, so that the first deodorization space is effectively sealed, and the odor can be effectively removed from the first deodorization space. The air flow can effectively keep slowly flowing or stopping for a certain time at the position, corresponding to the UV photolysis deodorization lamp, in the box body, and the irradiation reaction time of odor and the UV photolysis deodorization lamp in the box body is prolonged, so that the air flow can be effectively and completely reacted and purified in the flowing-in and flowing-out processes.

This application discloses a method for preparing graphene nanosheets by electrochemical cathode exfoliation and the application of graphene nanosheets. The method includes: placing graphite powder in a conductive cylindrical tube closed at one end as an electrochemical cathode; using a conductive material as an electrochemical anode; wherein the graphite powder is electrically connected to the conductive cylindrical tube; forming an electrochemical circuit with an electrolyte, the electrochemical anode, and the electrochemical cathode, wherein the electrolyte includes a solution of a soluble salt containing a large cation and / or a solution of an alkali containing a large cation; applying a cell voltage between the electrochemical cathode and the electrochemical anode, and electrochemically exfoliating the graphite to obtain the graphene nanosheets. This method ensures that the graphite microsheets exfoliated from the electrode are confined within the designated cylindrical tube space, thereby maintaining conductive contact in the electrolyte, allowing the exfoliation reaction to continue, achieving the goal of prolonging the electrochemical exfoliation of graphite microsheets, and ultimately obtaining high-quality few-layer graphene.

This invention relates to the field of thickener technology, specifically disclosing a high-efficiency, uniformly distributed stabilizing tank for thickeners. The tank includes a stabilizing tank body, with a feed pipe installed on the top side wall of the body. One end of the feed pipe near the stabilizing tank body is connected to the interior of the body. Multiple openings are evenly distributed through the bottom of the inner wall of the stabilizing tank body. A fixing plate is movably installed inside the stabilizing tank body, and a first auxiliary mechanism is provided on the fixing plate. By incorporating openings, connecting rods, a fixing plate, and a rotating plate, this invention allows impurities such as ore fragments and mud lumps that affect the flocculation effect of the slurry to be blocked when the slurry is discharged from the openings to the bottom of the stabilizing tank body. The filtered slurry is then discharged downwards through the openings, free from the influence of ore fragments and mud lumps. Therefore, the flocculation effect of the slurry flocs is more stable, increasing the thickener's processing efficiency.

The utility model relates to a device for increasing the utilization rate of copper smelting waste acid sodium sulfide, which comprises a reaction kettle and a liquid conveying pipe, one side of the reaction kettle is provided with an acid inlet, and the other side of the reaction kettle is provided with an overflow port; the infusion tube is vertically arranged in the reaction kettle, the top of the infusion tube penetrates through the reaction kettle, and the bottom of the infusion tube is connected with an extension tube; the extension pipe is transversely arranged in the reaction kettle, and the height of the extension pipe is lower than that of the overflow port; a plurality of spray holes are formed in the extension pipe; a slag discharging opening is formed in the bottom of the reaction kettle; and a valve is mounted on the slag discharge port. Liquid sodium sulfide is sprayed out through the spray holes in the extension pipe, and the liquid sodium sulfide is sprayed out from the spray holes in the extension pipe under the action of pressure, is dispersed into waste acid and reacts with the waste acid, so that the reaction time of the sodium sulfide and the waste acid is prolonged, and the retention time of hydrogen sulfide generated by the sodium sulfide and the waste acid in the waste acid is prolonged; therefore, the sulfuration reaction is more sufficient, and the utilization rate of sodium sulfide is improved.

This invention relates to the field of hot melt adhesive preparation technology, and more particularly to a method for preparing an insulating, heat-resistant, and flame-retardant hot melt adhesive for mechanical motors. The method includes determining the corresponding raw material type by obtaining the hydroxyl value index and isocyanate group index, thereby calculating the hydroxyl value deviation or isocyanate group deviation to determine the catalyst dosage adjustment range or the initial reaction temperature adjustment range; determining the reaction time for prepolymerization based on the adjusted catalyst dosage and initial reaction temperature; calculating the reaction uniformity and absorption peak intensity decay rate by real-time monitoring of the characteristic absorption peak intensity during the reaction; comparing the reaction uniformity with a preset reaction uniformity to determine whether to perform acceleration adjustment; and comparing the absorption peak intensity decay rate with a preset absorption peak decay rate to determine whether to extend the reaction time, ultimately preparing the hot melt adhesive. This invention effectively overcomes raw material batch fluctuations and process disturbances, significantly improving the consistency and overall performance of the hot melt adhesive.

The utility model discloses a separation device for short-process salt-containing wastewater, which relates to the technical field of water treatment equipment and comprises a water delivery pipeline, and a high-pressure pump is arranged on the water delivery pipeline and used for increasing the pressure of raw water in the water delivery pipeline. The filtering assembly is connected with the water conveying pipeline, and the filtering assembly is used for filtering raw water. Wherein a nanofiltration membrane is used as a filtering piece in the filtering assembly. According to the utility model, the high-pressure ozone dissolving technology is introduced, the pressure of the raw water is controlled, the dissolving concentration of the ozone is improved, the partial pressure of the ozone in a gas phase is improved under the high-pressure condition, and the concentration of the ozone dissolved in the raw water is improved to multiple times of that of the conventional ozone. The high-concentration ozone aqueous solution greatly improves the oxidative degradation effect of ozone on organic matters, so that organic pollutants in the wastewater can be more quickly and thoroughly removed.

This utility model belongs to the field of chemical technology, specifically relating to a hydrogen recovery device for liquid ammonia production. It includes a tank with an exhaust port and an inlet at the top and bottom, respectively. A liquid injection port and a liquid discharge port are also provided on the lower side of the tank. The lower part of the tank is filled with a catalyst solution, and a catalytic mechanism is installed inside the tank. Through the cooperation of the gas distribution component, partition plate, and atomizing processor in the catalytic mechanism, hydrogen can be effectively catalytically purified during recovery, removing any impurities that may be present in the hydrogen and increasing the reaction time between hydrogen and the catalyst, thus better meeting the needs of high-purity hydrogen recovery.

The invention relates to the technical field of fuel waste gas, in particular to an aerospace launch hydrazine fuel waste gas purification treatment device and method.The aerospace launch hydrazine fuel waste gas purification treatment device comprises a plurality of tubular reactors connected in series, the inner walls of the tubular reactors are coated with titanium-based catalyst coatings, the upper portions in the tubular reactors are oxidation reaction chambers, and the lower portions in the tubular reactors are ozone treatment chambers; an ozone aeration disc is mounted at the bottom in the ozone treatment chamber, an ozone inlet is formed in one side of the ozone aeration disc, the ozone inlet is formed in the side wall of the ozone treatment chamber, and a granular porous adsorption material is laid on the top surface of the ozone aeration disc; an ultraviolet lamp tube is arranged between the top in the tubular reactor and the top surface of the granular porous adsorption material, and the ultraviolet lamp tube is mounted at the top in the oxidation reaction chamber; the bottom of the tubular reactor is communicated with a drainage pipe. The device is not only suitable for treating waste gas generated in the hydrazine fuel transfer and filling process, but also suitable for hydrazine fuel production and transportation and purification treatment of hydrazine fuel waste gas in other places.