66results about How to "Improve mass transfer efficiency" patented technology

The invention relates to a combined truncated cone type gas-liquid redistributor. The combined truncated cone type gas-liquid redistributor comprises a conical wall and a connecting bottom plate. Theconnecting bottom plate is fixedly arranged at the bottom of the conical wall, and is provided with a plurality of strip-shaped folding plates; the strip-shaped folding plates are of inverted-V structures; a plurality of air holes are formed at equal intervals in both sides of each strip-shaped folding plate; a stop plate is fixedly arranged on the lateral side of the strip-shaped folding plate above each air hole, and an angle is formed between each stop plate and the lateral side of the corresponding strip-shaped folding plate; the angles between the stop plates and the lateral sides of thestrip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate. The combined truncated cone type gas-liquid redistributor has the advantages that the strip-shaped folding plates and the stop plates are adopted to achieve a good distribution effect of washing liquid, and accordingly, the area and time of contact between gases and liquid can be increased and prolonged; the included angles between the stop plates and the lateral sides of the strip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate, so that the differences among the flowing speeds of gases from each air hole are small, the gas distribution effect is good, poor gas-liquid distribution in a packing tower is reduced, and the gas-liquid mass transfer efficiency is improved.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The application discloses a kind of without heating regeneration carbon dioxide normal temperature removal process and system, belong to natural gas decarburization field;A kind of without heating regeneration carbon dioxide normal temperature removal process, comprising the following steps:S1, raw material gas pretreatment;S2, CO2 absorption;S3, rich liquid flash evaporation;S4, lean liquid regeneration;S5, material circulation;The application is effectively solved by the absorption part of being set, the pain point that edge filler reaction is not sufficient, the low life of central filler;Can shake and scatter adhesion filler ball, clean filter hole impurity, avoid filter hole blockage, further improve gas-liquid mass transfer efficiency;Can buffer knock impact force, prevent that filler plate is damaged;Can effectively protect electric telescopic rod, and maintenance is convenient, need not to disassemble whole tower body, shorten maintenance cycle, guarantee production continuity;Can avoid liquid flooding, channeling phenomenon.

The utility model provides a kind of oblique membrane plate's desulfurization tower, including desulfurization tower body, circulating spray mechanism, scale removal spray mechanism and baffle;Flue gas enters desulfurization tower body inside by smoke inlet pipe, and enters into desulfurization passage, and contact with the desulfurization lye that circulating spray mechanism sprays realizes desulfurization, and the contact path and contact time of flue gas and desulfurization lye are increased in the desulfurization passage of baffle composition, force flue gas to generate turbulent flow, improve gas-liquid mass transfer efficiency, to improve desulfurization efficiency, and by the spray head of last setting direct alignment possibly formed in baffle below " dry area ", carry out supplementary spray, help to eliminate desulfurization blind area, improve overall desulfurization uniformity and efficiency, by switching three-way valve, spray head can also spray scale removal agent on baffle, can effectively flush scale face on baffle, avoid the influence of airflow circulation of brushing baffle scale.

The utility model relates to a distillation device for methyl anthranilate production belongs to distillation equipment technical field, including distillation column, heating box, heater, steam outlet pipe, condenser, a plurality of support filter plates are fixed in the distillation column, the top of support filter plate is equipped with the filler layer, the top of intermediate filler layer is equipped with liquid inlet pipe, the condenser includes condensing box, and the condensing box is connected with inlet steam pipe and outlet steam pipe, and the inlet steam pipe is connected with the steam outlet pipe between the flow guide pipe, and the outer end of flow guide pipe is spirally wound with cooling air pipe, a plurality of liquid discharge pipes are equipped at the bottom of condensing box, and the liquid discharge pipe close to inlet steam pipe is connected with the return pipe, and the other end of return pipe is connected to the upper part of the uppermost filler layer, the utility model makes methyl anthranilate and other impurities more fully separate, has improved distillation efficiency significantly, first utilizes the air cooling to carry out the preliminary cooling to steam, reduces the load of water cooling system, promotes the purity, and the tower top temperature will not cause the sudden drop when refluxing, influences the distillation effect.

The present application relates to the field of environmental chemical engineering, especially to a device for removing new pollutants in sewage and a use method thereof, the shell is sequentially assembled from bottom to top by a water storage area, a filler area and a hydraulic area, the side wall of the water storage area is respectively provided with a water inlet and a water outlet with a non-return valve, and an agitator is fixed to the bottom of the water storage area; the filler area includes a porous filter screen and a biochar filler limited in the interior of the porous filter screen, a glass tube frame extending inward is fixed in the filler area, and an ultraviolet lamp is inserted into the glass tube frame; the hydraulic area includes a hydraulic display screen switch and a hydraulic piston slidingly and sealingly arranged on the top of the shell, the hydraulic piston is controlled to move downward to compress and pressurize the gas in the space below; the device is also connected with an ozone generator for filling ozone gas into the interior of the shell, which improves the adsorption performance and service life of the filler, the gas mass transfer mode and reduces the cost.

This invention relates to the field of aquaculture water treatment technology, and discloses a multi-stage purification and filtration system and filter dam device for fish ponds. The system includes a multi-stage flow-guiding filter dam, a piezoelectric-biocoupled reactor, and an adaptive resonant control system. The piezoelectric-biocoupled reactor is filled with piezoelectric composite biological filler. A micro-electric field is generated by ultrasonic excitation, which works synergistically with the biofilm to degrade pollutants. The adaptive resonant control system monitors the acoustic impedance value within the piezoelectric-biocoupled reactor in real time and adaptively adjusts the ultrasonic output parameters based on deviation using a differential algorithm, achieving dynamic control and in-situ renewal of the biofilm thickness. The system also includes anoxic autotrophic denitrification and reoxygenation reflux devices at the back end. Through the microscopic coupling of piezoelectric catalysis and biodegradation, and intelligent closed-loop feedback control, the system achieves simultaneous and efficient removal of recalcitrant organic matter and ammonia nitrogen, ensuring the high activity and long-term stable operation of the purification system.

This invention relates to the field of catalysis, and discloses a method for preparing a naphthalene alkylation catalyst based on a hierarchical porous molecular sieve and its application. The preparation method includes: 1) treating a low silica-to-alumina ratio zeolite molecular sieve with a microporous structure by steam treatment or acid washing to obtain a dealuminized molecular sieve; 2) treating the dealuminized molecular sieve with a mixed aqueous solution of tetraethylammonium hydroxide and alkali to obtain a surface-rich silica-based hierarchical porous molecular sieve; 3) modifying the surface-rich silica-based hierarchical porous molecular sieve with ammonium ion exchange and calcining to obtain an alkylation catalyst, wherein the inner layer has a hierarchical porous structure with micropores and mesopores, and the outer layer is mainly mesoporous inert silica. The naphthalene alkylation catalyst prepared by this invention has a hierarchical porous structure with micropores and mesopores in the inner layer and an outer layer mainly mesoporous inert silica. This catalyst has the advantages of high selectivity, good mass transfer efficiency, and low deactivation.

This invention discloses a porous carbon-supported copper catalyst, its preparation method, and its application, belonging to the field of catalyst preparation technology. The invention uses three-dimensional interconnected ordered porous carbon (NCP) with a large-pore structure as a support, tetraphenylporphyrin copper(II) and tetraphenylporphyrin as nitrogen and copper sources, and KOH or NaOH as activators. An NCP precursor adsorbed with tetraphenylporphyrin copper(II), tetraphenylporphyrin, and an alkaline component is obtained through a two-step adsorption process. This precursor is then pyrolyzed at 600-900℃ under nitrogen protection, cooled to room temperature, and washed with water to obtain the porous carbon-supported copper catalyst (NCP@NC-Cu). This catalyst retains a three-dimensional interconnected porous structure, with the active component (copper species) mainly distributed within the pores of the NCP support, and possesses a large specific surface area and abundant nitrogen. The catalyst was applied to the N-formylation reaction of amines with CO2 and H2 to prepare formamide compounds, exhibiting excellent catalytic activity, recyclability, and good substrate versatility, showing promising application prospects.

This invention relates to the field of freeze-drying technology, specifically to an intelligent vacuum freeze dryer and its usage method. The dryer includes a main unit and a pre-freezing vacuum chamber within it, a shelf placed inside the pre-freezing vacuum chamber, the shelf having an internal cavity and a main gas inlet at its bottom for gas to enter the internal cavity; a carrying tray with multiple evenly arranged internal components for storing materials, the tray having multiple planar grids and heating elements for releasing heat, multiple push rods for moving materials within the planar grids, and an adjustment component for adjusting the position of the push rods according to different usage environments; and side rotating columns with multiple evenly rotatable components connected to the sidewalls of the carrying tray, each side rotating column having multiple exhaust ports, and the carrying tray having an efficiency-enhancing component for driving the side rotating columns.

The application belongs to the technical field of rubber additive synthesis, and particularly relates to a method for continuously preparing 4,4'-dithiodimorpholine. The method uses sulfur monochloride, morpholine, 32wt% liquid alkali (sodium hydroxide solution) and 120# solvent oil as raw materials, and generates 4,4'-dithiodimorpholine in a dynamic tubular reactor. After the reaction is completed, the material flowing out of the dynamic tubular reactor is collected, and the product is obtained through static layering, washing, filtering and drying. The method uses the dynamic tubular reactor for reaction, and the mass transfer and heat transfer efficiency are extremely high. The material is instantaneously and uniformly mixed, so that the morpholine and the sulfur monochloride are rapidly contacted and reacted, the reaction heat can be instantaneously removed, the optimal reaction temperature can be accurately maintained, the continuous production can be realized, the production capacity is greatly improved, the reaction time of the traditional kettle reactor is shortened from 2-7h to 10min, the raw material conversion rate is as high as 99% or more, and the goals of cost reduction and efficiency improvement, green safety are finally achieved.

The application discloses a high-temperature co-electrolysis cell stack module structure and relates to the technical field of fuel cells, which comprises an electric pile group and a pipeline assembly; the electric pile group comprises six electric piles which are arranged in a regular hexagon around a central position and are left empty in the central position; the electric pile comprises a top plate and a bottom plate, and the top plate and the bottom plate are in a regular hexagon structure; the electric pile further comprises four groups of stretching assemblies, the stretching assembly comprises a pull rod and a spring, and the spring is in a stretching state; the pipeline assembly comprises an air inlet pipeline and an air outlet pipeline; the gas entering a total gas inlet is shunted to the first gas inlets of the six electric piles, and the gas entering a total air inlet is shunted to the first air inlets of the six electric piles; the air outlet pipeline comprises a total gas outlet and a total air outlet, and the gas flowing out of the first gas outlets and the first air outlets of the six electric piles is respectively converged to the total gas outlet and the total air outlet. The application adopts a honeycomb six-pile ring arrangement structure, and the compactness and the modularization level of the system are significantly improved.

The application discloses a silk fibroin solution purification device and a purification method thereof, which comprises a dialysate storage tank, a dialysis water tank, a finished product storage tank and a PLC control cabinet; a liquid pumping pump, a self-priming pump and a dialysis cavity are installed in the dialysis water tank, a dialysis bag is hung in the dialysis cavity, and the liquid inlet and the liquid outlet of the dialysis bag are connected to the liquid pumping pump and the self-priming pump through liquid inlet electromagnetic valves and liquid outlet electromagnetic valves respectively; the liquid pumping pump is connected to the liquid pumping electromagnetic valve of the dialysate storage tank, and the self-priming pump is connected to the liquid inlet of the finished product storage tank; water inlet electromagnetic valves and water outlet electromagnetic valves are further installed on the dialysis cavity; and the PLC control cabinet is connected to all electromagnetic valves, the liquid pumping pump and the self-priming pump. The application adopts the PLC to monitor information of each module and control a dialysis process, liberates manual work, reduces cost, improves dialysis precision at the same time, ensures purification quality, improves product purity, automatically monitors a dialysis end point, improves consistency of purification, sets a dialysis circulating flow system and improves dialysis efficiency.

This invention provides a conductive wood-based filter, its preparation method, and its application, belonging to the field of water treatment technology. The invention provides a conductive wood-based filter comprising a wood matrix and nano-carbon material grafted with nano-zero-valent iron (ZVI) onto the surface and pores of the wood matrix. The conductive wood-based filter provided by this invention enables uniform dispersion of ZVI nanoparticles on the filter surface, solving the problems of easy agglomeration and difficult recovery of ZVI nanoparticles, and the ZVI nanoparticles possess a large effective specific surface area. The use of nano-carbon material combined with ZVI nanoparticles solves the problem of high electron transfer resistance during the ZVI nanoparticle reaction. When the conductive wood-based filter of this invention is used to filter water containing Cr(VI), the reaction is carried out in cathode mode by applying an electric field, which effectively alleviates the oxidation and passivation of ZVI nanoparticles, ensuring operational stability and improving reaction efficiency.

This application provides a method for preparing a catalyst layer and a membrane electrode. The preparation method includes: step S1, providing a catalyst slurry, the catalyst slurry comprising a catalyst, an ionomer solution, and a mixed solvent; wherein the mixed solvent is a mixture of water and alcohol, and the volume percentage of alcohol in the mixed solvent is ≥50%; the weight ratio of catalyst to ionomer in the ionomer solution is 1:(0.4~0.8); step S2, coating the catalyst slurry onto at least one side surface of a substrate, and obtaining a dry film after drying; step S3, annealing the dry film to obtain a catalyst layer; the annealing treatment includes a first annealing stage and a second annealing stage performed sequentially, the temperature of the second annealing stage being higher than the temperature of the first annealing stage, and the difference between the two being ≥40℃. This application effectively improves the uniformity of ionomer distribution in a high alcohol-proportion catalyst slurry system through staged annealing treatment.

The present application relates to adsorption separation of bisphenol A and 2,4-bisphenol A adsorbent and its adsorption separation process; the adsorbent is a high-silicon Y molecular sieve containing rare earth, the molar ratio of the contained silicon oxide and aluminum oxide is 2.5:1-15:1, the contained rare earth metal is one or a combination of multiple of lanthanum, cerium, scandium and yttrium, the content of rare earth metal is 10:1-1000:1 in terms of the molar ratio of silicon and rare earth metal, and the rare earth metal exists in the form of metal ions. The adsorption separation process is to contact the mixture containing bisphenol A, 2,4-bisphenol A, triphenol and chroman in the crystallization mother liquor with the adsorbent in the adsorption separation reactor to carry out adsorption separation, and the obtained bisphenol A and 2,4-bisphenol A after adsorption separation enter the isomerization reaction unit; the obtained triphenol and chroman after adsorption separation enter the cracking reaction unit. Phenol is used as the eluent, has strong affinity with the adsorbent, and the elution efficiency reaches more than 95%.

A deep purification system for light hydrocarbons adapted to low-pressure conditions includes a pretreatment unit, a primary adsorption tower, an intermediate conditioning unit, a secondary adsorption tower, and a tertiary adsorption tower connected in series. The primary, secondary, and tertiary adsorption towers are filled with modified COFs adsorbents, and each tower is equipped with a regeneration unit. The regeneration unit achieves desorption of the modified COFs adsorbent and recovery of light hydrocarbon gases through steam desorption, nitrogen purging, and cryogenic cooling. This invention solves the problems of low capacity, poor mass transfer at low pressure, and insufficient stability in existing adsorption technologies.

This application relates to the field of activated carbon fiber technology, specifically disclosing a method for preparing highly adsorbent activated carbon fibers. This application uses oxidized modified viscose fiber as a precursor, which is then activated by plasma and subsequently seeded with nanocrystals to form a carbon-silicon composite intermediate. After carbonization, the silica is removed by hydrofluoric acid etching, resulting in a relatively continuous hierarchical porous structure. Plasma post-treatment is then used to adjust the surface properties of the activated carbon fiber surface and the pores. Compared to activated carbon fibers prepared using conventional phosphoric acid activation methods currently available on the market, the activated carbon fibers obtained in this application improve the mass transfer efficiency of macromolecular pollutants through their hierarchical porous structure. Furthermore, the pores, after plasma post-treatment, can fully utilize their adsorption and binding capacity for polycyclic aromatic hydrocarbons (PAHs). Therefore, the activated carbon fibers obtained in this application have a higher adsorption capacity for PAHs.

This invention relates to the field of proton exchange membrane electrolyzers, and discloses a bipolar plate flow channel design for a proton exchange membrane electrolyzer based on honeycomb biomimetic principles. The design includes: an electrolyte inlet, a gas-liquid mixture outlet, a honeycomb biomimetic flow field region, an inlet distribution region, and an outlet collection region. The electrolyte inlet supplies deionized water into the flow channel; the gas-liquid mixture outlet discharges a mixture of electrolyte, hydrogen, and oxygen; the honeycomb biomimetic flow field region is composed of several periodically and closely arranged regular hexagonal flow channel units, covering the effective reaction area on the anode side of the bipolar plate; the electrolyte inlet and the gas-liquid mixture outlet are connected through a connecting channel within the honeycomb biomimetic flow field region. The flow channels of this invention exhibit a more uniform velocity field distribution and a more reasonable pressure field distribution, verifying that they maintain excellent and stable hydrodynamic performance under different operating conditions.

This invention discloses a highly efficient integrated anaerobic ammonia oxidation reactor and treatment method for kitchen wastewater sludge, belonging to the field of wastewater treatment technology. The reactor includes a tank and integrated pretreatment module, denitrification reaction module, solid-liquid separation module, temperature control module, aeration module, and sludge circulation module. The pretreatment module is located at the bottom of the tank and includes a grid filter unit and a bio-adsorption unit; the denitrification reaction module is located above the pretreatment module and is filled with granular anaerobic ammonia oxidation composite bacteria; the solid-liquid separation module is located above the denitrification reaction module and includes a three-phase separator and an inclined plate sedimentation unit. This invention, through its integrated design, achieves pretreatment, denitrification reaction, solid-liquid separation, and precise control within a single tank, solving the problems of low integration, easy loss of bacteria, and high operating costs in existing technologies. It has advantages such as small footprint, high efficiency, stable operation, and no need for external carbon sources, making it particularly suitable for kitchen wastewater sludge treatment.

The application discloses a high-sulfur capacity hierarchical porous structure desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification materials. The hierarchical porous alumina carrier is obtained by an in-situ hydrothermal growth method, and then the active components and catalytic additives, such as Zn, Cu, Ce, Mg, La and metal oxides, are highly dispersedly loaded in the hierarchical pores by using a complex co-precipitation method, and the desulfurizer is obtained after being dried and formed by calcination. The application has the advantages that the hierarchical porous structure greatly promotes the reaction mass transfer and provides abundant active site loading space; and the synergistic effect of the multiple additives effectively improves the sulfuration reaction activity and the anti-sintering capacity. The desulfurizer prepared by the method has excellent performances such as high sulfur capacity, fast reaction speed, high mechanical strength and good stability, and is particularly suitable for high-precision deep removal of hydrogen sulfide in gas such as synthetic gas and natural gas.

This invention discloses a method for preparing a gas separation membrane, specifically a method for densifying and hydrophobically modifying the outer surface of a hollow fiber membrane. The invention primarily involves mixing isotactic polypropylene granules in a mixer and heating them to 150-200°C. The granules are then stretched and extruded into a membrane through a spinneret while in a molten state. The membrane is then cooled for 1-3 minutes in a cooling chamber using volatile alkanes or alcohols as atomizing cooling media. Finally, the hollow fiber membrane fibers are stretched and drawn onto rollers, automatically wound onto the rollers to form the original membrane fibers. These fibers are then subjected to post-treatment processes such as overnight soaking in deionized water and washing to obtain the hollow fiber degassing membrane. The advantages of this invention are that it eliminates the need for introducing other components (the alcohol solvent is fully evaporated without residue), avoids material compatibility and stability issues between different components, and provides a long-lasting and reliable hydrophobic enhancement effect.

This utility model discloses a combined structure for a highly efficient ammonia-containing exhaust gas absorption tower, comprising an outer shell, with supporting legs fixedly connected in a circular array at the lower end of the shell, an air inlet channel in the center of the lower surface of the shell, a honeycomb frame snapped into the center of the shell's interior, and a packing frame snapped into the internal channel of the honeycomb frame, a connecting frame fixedly connected to the upper end of the shell's interior, a fixing groove in the upper surface of the connecting frame, and a demister snapped into the fixing groove, the packing frame having a hexagonal structure in the center and slots on its outer side, and a folded plate demister with a limiting block fixedly connected to the outer ring side of its upper surface; the packing layer and the demister layer are optimized and combined, the packing layer using special structured packing with a large specific surface area and high mass transfer efficiency, enabling the ammonia-containing exhaust gas to fully contact the absorbent liquid and achieve efficient absorption.

This invention belongs to the field of peroxide production technology, specifically relating to a continuous production apparatus and method for lauroyl peroxide. The continuous production apparatus for lauroyl peroxide includes a primary reactor, to which a secondary reactor, a tertiary reactor, and a filter tank are sequentially connected. Each of the primary, secondary, and tertiary reactors is equipped with a stirrer, with a spiral plate threaded onto its upper part. A motor is connected to the top of the stirrer. A conveyor belt is installed inside the filter tank, and a mother liquor outlet is located in the center of the bottom plate. The bottom plates on both sides of the mother liquor outlet are inclined. A primary washing tank, a secondary washing tank, and a tertiary washing tank are sequentially connected to the filter tank. Each of the primary, secondary, and tertiary washing tanks is equipped with a filter screen and a sprayer. This invention employs a multi-reactor series continuous production process, resulting in higher production efficiency and more stable operation.

The invention relates to the technical field of chemical catalysts, in particular to a catalyst for preparing 2-tert-butylhydroquinone and a preparation method and application thereof.The catalyst comprises a hierarchical pore H beta molecular sieve, active metal is loaded in a framework of the hierarchical pore H beta molecular sieve, and the active metal is one or more of La, Ce and Zn. The catalyst adopts the hierarchical pore H beta molecular sieve as a skeleton, so that the diffusion limitation of the traditional microporous molecular sieve can be effectively broken through, and the occurrence of side reactions is reduced while the intrinsic rate of the reaction is greatly improved. La, Ce and Zn active metals are introduced into a hierarchical pore H beta molecular sieve framework to form a high-activity catalytic center synergistic system, and the reaction process is enhanced. Compared with the traditional liquid acid catalyst and ion exchange resin, the catalyst has the characteristics of simple process, easiness in recovery, no pollution, good high-temperature stability, high catalytic activity, good selectivity and low cost, and solves the core problems of low activity, heavy pollution and high cost of the traditional catalyst.

A system and method for ammonia-based desulfurization and decarbonization of phosphogypsum and co-production of ammonium sulfate and calcium carbonate is disclosed. This system removes over 98% of SO₂ from flue gas, reduces CO₂ emissions by 10-20%, and converts over 95% of calcium sulfate dihydrate (the main component of phosphogypsum) into calcium carbonate usable as cement raw material, while also co-producing ammonium sulfate for fertilizer. Ammonia emissions in the tail gas are less than 10 mg / m³. This invention utilizes waste heat from flue gas to deammonize and desorb ammonia-containing slurry, saving energy required for evaporation and improving mass transfer efficiency during desulfurization and decarbonization due to lower flue gas temperature. By recycling the deammoniation-treated slurry as a washing liquid for escaping ammonia and replacing process water with ammonium sulfate solution to prepare the phosphogypsum, the ammonia escape problem is effectively solved, while reducing energy consumption for subsequent ammonium sulfate crystallization and evaporation treatment by approximately 35%. Employing a structural design similar to traditional limestone-gypsum desulfurization towers, this system achieves a technological upgrade of ammonia-based desulfurization and decarbonization without altering the existing main structure of the desulfurization tower, significantly reducing investment costs for technological upgrades. This invention successfully overcomes the technical pain points of ammonia desulfurization and decarbonization technology, such as severe ammonia escape, large washing water volume leading to high energy consumption in subsequent product processing and high equipment modification costs, resulting in significant energy saving, water saving, emission reduction and increased revenue benefits.

The application provides a binary ionic liquid fiber membrane, a preparation method and application in adsorption of palladium, and belongs to the technical field of adsorption materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate, a first ionic liquid and a second ionic liquid in the first solution to obtain a second solution; the first ionic liquid and the second ionic liquid are alkenyl imidazole salts with different length alkyl side chain molecular structures; adding N,N'-methylene bisacrylamide and benzoyl peroxide into the second solution, heating, stirring and warming to obtain a third solution; performing high-pressure electrospinning on the third solution to obtain a binary ionic liquid fiber membrane; or performing irradiation on the second solution after high-pressure electrospinning to obtain a binary ionic liquid fiber membrane. The binary ionic liquid fiber membrane prepared by the application can efficiently and selectively adsorb and recover palladium from a complex acidic solution, and has the advantages of faster adsorption speed, better selectivity and better salt resistance.

This utility model discloses a sludge reduction device based on porous packing, belonging to the field of sludge reduction technology. It includes an inlet pipe, a reduction mechanism fixedly connected to its outer surface, a filter assembly movably connected to the inner cavity of the inlet pipe, and an outlet pipe fixedly connected inside the reduction mechanism. A valve is installed on the outer surface of the outlet pipe. Through two aerators and a stirring assembly, air can be supplied to the reaction tank to form a stable aerobic environment, providing sufficient oxygen for the aerobic metabolism of microorganisms and accelerating the decomposition of organic matter in the sludge. Simultaneously, the water flow disturbance generated by aeration and the stirring action of the stirring assembly promote full contact between the wastewater and the biofilm on the porous packing, significantly improving mass transfer efficiency. In this environment, microorganisms can more fully utilize the organic matter in the wastewater, accelerating their own metabolism and sludge decomposition, thus improving sludge reduction efficiency, effectively reducing subsequent sludge treatment costs and environmental pressure, and enhancing the practicality of the device.

A provided gas-liquid mixing reactor comprises a reactor main body, the reactor main body is sequentially provided with a three-fork type inlet structure, a mixing cavity and an outlet along a fluid flowing direction, the three-fork type inlet structure comprises a gas inlet and two liquid inlets, and the two liquid inlets are symmetrically distributed at two sides of the gas inlet; the end, close to the gas inlet, of the liquid inlet is communicated with the gas inlet. The end, away from the gas inlet, of the liquid inlet inclines towards the direction away from the gas inlet. A bowl-shaped mixing structure is arranged in the mixing cavity, the concave surface of the bowl-shaped mixing structure is opposite to the gas inlet, the convex surface of the bowl-shaped mixing structure is opposite to the outlet, and the gas inlet, the bowl-shaped mixing structure, the mixing cavity and the outlet are coaxially arranged. Shock wave effect enhanced mixing is achieved through the bowl-shaped mixing structure, shock waves formed in multiphase flow enable bubbles to be broken more thoroughly, and mixing is more uniform. According to the invention, the mixing efficiency is improved, the structure of the reactor is simpler, and the maintenance cost is reduced.