48results about How to "Improve desorption efficiency" patented technology

The machining wastewater treatment equipment is connected with a wastewater input pipeline and comprises a three-phase separation device, an evaporation device, a filtering device and a concentrated solution collection device which are sequentially connected, the wastewater input pipeline is connected with the three-phase separation device, and the three-phase separation device is used for carrying out oil-water separation on wastewater; the evaporation device comprises a low-temperature evaporator and a cleaning barrel; the filtering device comprises a ceramic membrane filter and a molecular sieve COD (Chemical Oxygen Demand) filter; the ceramic membrane filter is used for removing water-soluble floating oil in distilled water; the molecular sieve COD filter is used for filtering the filtered wastewater, and clear water is discharged up to the standard or collected for reuse. The invention develops a brand-new treatment method for machining wastewater, and a brand-new machining wastewater treatment process is formed by combining three-phase separation, evaporation, ceramic membrane filtration, molecular sieve filtration and an anti-pollution membrane; the method is a full-physical process, does not need to add any medicament, and is more environment-friendly.

The utility model discloses a swirl injection device and a carbon dioxide desorption and regeneration system, and relates to the technical field of carbon dioxide desorption and regeneration, on one hand, the swirl injection device comprises a cylinder and a jacket coaxially arranged outside the cylinder in a sleeving mode, the interior of the cylinder is hollow, and the bottom end of the cylinder communicates with a swirl injection drainage pipe; an overflow pipe is arranged at the upper end of the barrel, and the rotary spraying liquid discharging pipe, the barrel and the overflow pipe are all in a communicated state; a tangential liquid inlet pipe communicated with the cylinder body is arranged on the side surface of the upper end of the cylinder body; the jacket is hollow, so that a liquid storage cavity is formed between the jacket and the barrel, and a liquid inlet pipe communicated with the liquid storage cavity is connected to the jacket; a plurality of spraying holes are formed in the cylinder body, and each spraying hole is communicated with the liquid storage cavity and the cylinder body. On the other hand, the utility model discloses a carbon dioxide desorption and regeneration system which comprises the swirl injection device and a phase splitting device used for liquid feeding. The desorption device has the advantages of being high in desorption efficiency and convenient to use.

The invention discloses an anion exchange membrane electrode and a preparation method and application thereof, and belongs to the technical field of new energy material and catalytic electrode preparation, the method comprises the following steps: S1, preparing an anode catalyst slurry comprising a hydrophobic covalent organic framework material, an anode catalyst, an anion exchange ionomer and a solvent; s2, preparing a cathode catalyst slurry of which the components comprise a cathode catalyst, an anion exchange ionomer and a solvent; and S3, respectively spraying or coating the anode catalyst slurry and the cathode catalyst slurry on two side surfaces of an anion exchange membrane or a gas diffusion layer, and carrying out heat treatment to obtain the anion exchange membrane electrode. The method provided by the invention can solve the problems of large gas-liquid-ion three-phase mass transfer resistance, easy shielding of active catalytic sites by ionomers and unbalanced water management in the membrane electrode assembly in the existing AEMWE device.

The aerosol thermal desorption device comprises a porous pipeline, a heating part, an inner shell, an adsorbent and an outer shell which are sequentially distributed from inside to outside, the porous pipeline is used for receiving aerosol, and the inner shell is provided with a channel for aerosol volatile matter to pass through. The invention further relates to an aerosol thermal desorption system and method. According to the aerosol thermal desorption device, heating and adsorption are integrated, the heating component is arranged on the outer side of the porous pipeline, so that the whole aerosol thermal desorption device forms a temperature gradient from inside to outside when the heating component is heated, the temperature gradient enables aerosol conveyed by the porous pipeline to form an organic steam gradient, rapid evaporation is achieved, and the thermal desorption efficiency is improved. Therefore, rapid condensation can be realized only by matching with heat dissipation equipment for heat dissipation, and the adsorption efficiency of the adsorbent is improved.

This invention discloses a continuous adsorption-desorption treatment device for organic waste gas, relating to the field of environmental engineering construction technology. It includes: a support, on which multiple alternating treatment modules for treating organic waste gas are mounted; each treatment module includes: a treatment cylinder fixed to the support, an inner cylinder fixed inside the treatment cylinder, a main support mesh and multiple secondary support meshes fixed inside the inner cylinder, the main support mesh being located below all the secondary support meshes, and an activated carbon layer placed on the upper side of both the main and secondary support meshes, with gaps between the secondary support meshes and the activated carbon layer below them; and arc-shaped through holes at positions corresponding to these gaps on the inner cylinder. This invention utilizes the arc-shaped through holes to provide an additional flow path for the desorbed gas, allowing it to directly pass over the already desorbed activated carbon, reducing heat exchange between the desorbed gas and the desorbed activated carbon, thereby reducing heat loss and improving desorption efficiency.

The invention provides a method for determining the content of phenolic organic matters in tar residue and phenolic wastewater, which comprises the following steps: optimizing an MRM (Magnetic Resonance Modeling) method based on a GC-QQQ optimizer to obtain an optimized MRM method; detecting mixed standard solutions of phenol, o-methylphenol and p-methylphenol with different concentration gradients by using an optimized MRM method to obtain a linear regression equation corresponding to the characteristic ion flow peak area and the concentration of each compound, and taking the linear regression equation as a quantitative standard curve equation of each compound; the method comprises the following steps: extracting organic matters in a liquid phase and a solid content of coal tar and phenolic wastewater raw materials into an organic phase, and circularly washing the raw materials for multiple times by using an extraction solvent to obtain a to-be-detected organic phase; detecting a to-be-detected organic phase by using an optimized MRM method, and comparing and matching the quantitative ion pair and the qualitative ion pair with compounds in the standard solution to obtain a characteristic peak of the to-be-detected organic phase; and obtaining the content of each compound in the sample to be detected according to the peak area of the characteristic peak of each compound and the quantitative standard curve equation.

This invention relates to the technical field of oil and gas recovery, and discloses an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption. The system includes an adsorption tank, a vacuum pump, a heating module, an intelligent control unit, and a water removal module. The intelligent control unit is connected to the adsorption tank, the vacuum pump, and the heating module. The adsorption tank contains adsorbent, and a set vacuum degree is applied to the adsorption tank using the vacuum pump. The heating module heats the adsorption tank using steam or hot nitrogen in addition to vacuum desorption. Vacuum desorption reduces the surface pressure of the adsorbent, lowering the boiling point of the adsorbate. Combined with the high-temperature desorption effect of thermal desorption, this significantly enhances desorption efficiency while reducing energy consumption. The intelligent control unit adjusts the synergistic parameters of temperature and vacuum degree in real time. The system integrates adsorption, desorption, and water removal functions, supports continuous cyclic operation, increases the stability of oil and gas recovery rate, and eliminates the need for manual intervention in the regeneration process.

The invention belongs to the technical field of coal mine safety, and particularly relates to a cave-making and circulating heat injection rapid cross-cut coal uncovering method, which comprises the following steps of: firstly, constructing a plurality of drill holes in front of a coal uncovering working surface, performing cave-making operation on coal sections of the drill holes by utilizing a cave-making drill bit, and putting extraction pipes into the whole hole sections in the drill holes; a movable coal seam heating and water injection system is connected with an extraction pipe to continuously inject high-temperature hot water into a drill hole, after heat exchange of coal and water in the drill hole for several hours, the movable coal seam heating and water injection system is disconnected, water in the drill hole is discharged, and the water in the drill hole is thoroughly discharged after repeated water injection and disconnection circulation. According to the method, multiple purposes are achieved through one hole, the drilled hole for construction is firstly used for hole forming, then is used for circulating heat injection and finally is used for gas extraction, hole forming and circulating heat injection are combined, the gas extraction effect can be greatly improved, the gas extraction efficiency is improved, and the method has the advantages that the construction cost is reduced, and the construction period is shortened. The purposes of enhancing extraction promotion, rapidly reducing the gas content in the coal uncovering area and eliminating outburst danger are achieved.

The invention discloses a VOCs adsorption tower applying a honeycomb type concentration system, and relates to the technical field of waste gas treatment, the VOCs adsorption tower comprises an adsorption tower, a gas inlet, a steam mechanism, a beating mechanism, a second conveying pipe, a one-way valve, a catalytic combustion box, a spraying mechanism, a suction pump, a third conveying pipe, a three-way valve, a connecting pipe, a storage box and a detection mechanism; the left side of the front end of the adsorption tower is fixedly connected with an air inlet, the top of the adsorption tower is fixedly connected with a steam mechanism, and the steam mechanism is arranged, so that cracking and expansion of micro-pore channels in honeycomb-shaped activated carbon are accelerated through steam, the desorption efficiency is improved, and meanwhile, growth of pore walls and formation of pore structures are promoted; the specific surface area and the pore volume of the honeycomb-shaped activated carbon are increased, the adsorption performance of the honeycomb-shaped activated carbon is improved, the steam temperature is reduced through external water, excessive dryness is prevented, the structural integrity of the honeycomb-shaped activated carbon is protected, the heating rod stops working through the first control switch, accidents caused by overheating are prevented, and the safety of operators and equipment is protected.

The present application relates to the technical field of carbon dioxide desorption, and particularly relates to a carbon dioxide phase change absorption and desorption method, which comprises the following steps: step one, rich liquid conveying: conveying the rich liquid after phase change separation to a desorption device; step two, rich liquid heating: heating the rich liquid by the desorption device; step three, desorption: completing the desorption process of the heated rich liquid by the desorption device; step four, carbon dioxide exhaust: exhausting the heated carbon dioxide by the desorption device for collection; and step five, poor liquid exhaust: exhausting the poor liquid after the desorption in the desorption device is completed; the device is provided with a detection assembly and a reflux assembly, and the secondary desorption of the secondary rich liquid is beneficial to reducing the heat loss and desorbing the carbon dioxide in the rich liquid sufficiently, so as to improve the separation efficiency of the carbon dioxide.

The invention discloses a device suitable for multi-scene carbon dioxide adsorption and desorption and a manufacturing method thereof, and belongs to the technical field of gas production devices.The device is of a working unit type structure, gas can be fed into a vortex structure through an air inlet of a single working unit, and the vortex structure converts the input gas into vortex; according to the carbon dioxide adsorption and desorption device, the vortex is in contact with the adsorption and desorption unit, the contact efficiency of a carbon dioxide adsorption material and air is improved, the adsorption capacity is further improved, meanwhile, the flexible shell is used in the carbon dioxide adsorption and desorption device, and when external force is applied to the flexible shell, the flexible shell generates non-springback deformation; and when facing an arc-shaped mounting surface or a polyhedral mounting surface, external force can be applied to the flexible shell until the flexible shell forms an adaptive shape, so that the application is not limited by a use scene, and when facing a scene with a relatively large space, the number of the working units can be increased according to the space size and the purpose of the scene; therefore, the carbon dioxide adsorption and desorption efficiency in the scene is improved.

The invention provides a preparation method of micro-powder-free cobalt hydroxide, belongs to the technical field of lithium ion battery material preparation, and solves the problems that the content of micro powder is high and the synthesis process is difficult to control when the cobalt hydroxide is prepared in the prior art. The method comprises the following operation steps: preparing a solution, carrying out a synthetic reaction, aging, washing, drying and the like, and synthesizing a crimson beta-type cobalt hydroxide product with a product index D0 greater than or equal to 3 microns and regular morphology by controlling the temperature of a synthetic raw material solution at-5 to + 5 DEG C and controlling proper synthesis conditions. The cobalt hydroxide prepared by the method is regular in microstructure, does not contain fine micro-powder particles, and can be used for preparing cobaltosic oxide required by high-voltage lithium cobalt oxide.

The invention provides a dehumidification rotating wheel desorption module and dehumidification equipment, and belongs to the technical field of air treatment.The desorption module comprises a dehumidification rotating wheel, an air inlet shell and a heating piece, and the dehumidification rotating wheel is provided with an adsorption area and a desorption area; an air inlet shell covers one side of the desorption area, an air inlet channel is formed between the air inlet shell and the dehumidification rotating wheel, the dehumidification rotating wheel and the air inlet shell are arranged in a relative rotation mode, and a first air inlet is formed in the air inlet shell; a heating piece is arranged in the air inlet channel, a temperature buffer cavity is formed between the side wall where the first air inlet is located and the heating piece, a heat preservation transfer cavity is formed between the heating piece and the dehumidification rotating wheel, and a second air inlet is formed in the heating piece. According to the dehumidification rotating wheel desorption module, the air inlet shell and the heating piece are matched to form the ultra-thin desorption module, excessive waste of heat is avoided through the arrangement of the temperature buffer cavity and the heat preservation transfer cavity, and the desorption efficiency of the dehumidification rotating wheel is further improved.

The embodiment of the application provides a battery baking device and a baking method thereof, and relates to the technical field of battery manufacturing. The device is used for the coordinated drying of a battery in multiple physical fields. A generator is connected in parallel to an oven, a vacuum pump is connected in series to the oven, a valve assembly is used for switching the working states of the vacuum pump and the generator, and a heating plate is arranged in the oven and is in contact with the battery for heat conduction. The battery baking device and the baking method thereof can efficiently drive the desorption and migration of strongly adsorbed moisture in the battery, and improve the drying depth and time economy of the baking process.

The utility model discloses a filtering device and a vehicle, the filtering device comprises: an adsorption member, the adsorption member is provided with an opening, a communication port and a purging port, the opening is used for guiding air into the adsorption member, the adsorption member is used for adsorbing target gas, the communication port is used for communicating with a battery stack so as to guide the air after the target gas is adsorbed into the battery stack; the heating piece is configured to be in contact with the adsorption piece, and the heating piece is used for heating the adsorption piece so that the target gas can be desorbed; the air compressor is provided with an air compressor outlet, and the air compressor outlet is communicated with the purging opening; wherein the filtering device has a set mode, when the filtering device is in the set mode, the air compressor works to guide air from the purging opening to the opening, and the heating piece heats the adsorption piece so as to exhaust target gas. According to the utility model, the air compressor is arranged at the purging opening and supplies flowing gas into the adsorption part through the purging opening, so that the desorption efficiency of target gas is improved.

The invention discloses a preparation method of a porous titanium lithium adsorbent, which comprises the following steps: preparing a titanium lithium ion sieve precursor, a hydrophilic binder and a pore-foaming agent in proportion, heating and stirring in water to react, and drying and pelletizing after the reaction is finished to obtain the porous titanium lithium adsorbent. Compared with traditional PVC forming, the method has the advantages that the hydrophilic binder, the pore-foaming agent, the curing agent and the water are used for curing forming of the titanium-based lithium adsorbent, preparation of the multi-pore-channel and high-pore-volume titanium-based adsorbent is achieved, use of an organic solvent and a subsequent distillation recovery process are avoided, toxicity in the whole production process is reduced, and the method is suitable for industrial production. The production process of the lithium adsorbent is more environment-friendly, and the method has a great application prospect in the field of lithium extraction by an adsorption method.

The invention belongs to the technical field of energy and environmental protection engineering, and relates to a mixed combustion and tail gas treatment integrated system based on solid-state ammonia storage. The system is composed of three core parts: firstly, a metal halide-graphene aerogel composite material is adopted as an adsorbent to realize efficient adsorption and desorption circulation of ammonia; secondly, the desorption process of ammonia is driven through engine cylinder cover water circulation; and finally, an ammonia-doped combustion technology and a tail gas treatment technology are integrated to form a complete system. Compared with the prior art, efficient storage of ammonia is achieved, the stored ammonia is used for blending combustion and tail gas treatment, emission of greenhouse gas is reduced, and a more environment-friendly and low-cost solution is provided for energy conservation and emission reduction of medium and heavy fuel vehicles.

This invention provides a lithium adsorbent and its preparation method. The lithium adsorbent comprises: a binder framework and a lithium-ion sieve precursor located on at least a portion of the surface of the binder framework. The binder framework has a mesh-like interconnected pore structure, and the sphericity of the lithium adsorbent after grinding is not less than 95%. The lithium adsorbent provided by this invention, due to the mesh-like interconnected pore structure of its binder framework, avoids the formation of a dense skin layer on the surface of the lithium adsorbent and effectively increases the contact area between the lithium-containing liquid and the lithium-ion sieve, thereby significantly improving the adsorption and desorption efficiency of lithium.

This application discloses a carbon dioxide desorption tower, a carbon dioxide desorption method, and a decarbonization system, belonging to the field of chemical equipment technology. The carbon dioxide desorption tower includes a tower body, a catalytic unit, a liquid collecting device, and a reboiler. The tower body has a first receiving cavity, a first liquid inlet, a first liquid outlet, and a gas outlet; the catalytic unit is located below the first liquid inlet; the liquid collecting device divides the first receiving cavity into a first chamber and a second chamber; the reboiler has a reboiler inlet and a reboiler outlet, and the tower body has a second liquid outlet and a second liquid inlet. Liquid in the first chamber flows sequentially into the reboiler through the second liquid outlet and the reboiler inlet, and liquid in the reboiler flows sequentially into the second chamber through the reboiler outlet and the second liquid inlet; wherein, the liquid collecting device is provided with a venting section, and the first chamber and the second chamber are connected through the venting section. The carbon dioxide desorption tower of this application can improve desorption efficiency and reduce desorption energy consumption.

The invention provides a carbon capture system and a heat exchange assembly for the carbon capture system. The heat exchange assembly comprises an exhaust device, the exhaust device is provided with a first liquid inlet, a second liquid inlet, a first liquid outlet, a second liquid outlet and an exhaust port which are communicated with the internal space, the first liquid inlet is used for directly or indirectly receiving rich liquid from the absorption tower, and the first liquid outlet is used for directly or indirectly conveying part of the rich liquid to the regeneration tower; the exhaust port is used for exhausting gas escaping from the interior of the exhaust device; the heat exchanger communicates with the second liquid inlet and the second liquid outlet and is used for receiving the rich liquid from the second liquid outlet and conveying the rich liquid back into the exhaust device through the second liquid inlet after the rich liquid is subjected to temperature rise and heat exchange in the heat exchanger, and carbon dioxide is desorbed from the heated rich liquid in the exhaust device; the heat of the high-temperature medium in the carbon capture system can be recycled, and the desorption efficiency of carbon dioxide in the rich solution is improved by utilizing the recycled heat.

The present invention discloses a rotary organic waste gas adsorption and concentration device for VOC waste gas treatment, which relates to the technical field of organic waste gas treatment, and comprises a box body, in which an adsorption and desorption bed layer, an isolation mechanism and a rotating mechanism are arranged; the adsorption and desorption bed layer is fixed in the box body through a mounting frame; the isolation mechanism comprises a central axis, an isolation member, an upper cover plate and a lower cover plate, and the rotating mechanism comprises a motor, a driving gear and a driven gear. The present invention performs the adsorption and desorption treatment process synchronously, effectively utilizes the space in the device, and improves the efficiency of gas adsorption and desorption.

The present application belongs to the technical field of oil and gas exploitation, and relates to a nano desorption agent for gas well and a preparation method thereof. The desorption agent uses special pretreated biochar as a core carrier, loads specific proportion of bimetallic oxide nanoparticles, and is supplemented with an environmentally friendly surfactant for surface modification. Through the synergistic effect of nano size effect, catalysis / electron transfer effect of metal oxide, physical adsorption and pore transport effect of biochar, and interfacial tension reduction effect of surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is significantly reduced, and the efficient desorption is promoted. At the same time, all components and preparation processes are environmentally friendly and harmless to human body.

The invention relates to the field of adsorption materials, and discloses a lithium adsorption material and a preparation method and application thereof. The lithium adsorption material comprises a core body and a shell layer coating the surface of the core body, holes are formed in the shell layer of the lithium adsorption material, and the average diameter of the holes measured by an SEM (scanning electron microscope) is 0.01-2.5 microns; the core body of the lithium adsorption material comprises finger-shaped holes, and the longest average length of the finger-shaped holes, measured by an SEM (scanning electron microscope), of the section of the lithium adsorption material is 1-7 microns; the shortest average length is 0.05 to 2.5 [mu] m; and the thickness of the shell layer of the lithium adsorption material, which is measured by an SEM (scanning electron microscope), is 1-550 [mu] m. The lithium adsorption material with the specific structure is of a special structure with small outer shell layer holes and large inner core body holes, the mass transfer rate of water and salt can be increased, and when the lithium adsorption material is used for extracting lithium in a liquid environment, the lithium adsorption capacity can be remarkably improved.

The present application relates to the technical field of enrichment and extraction of rare metal lithium, and particularly relates to a system and method for selectively extracting lithium from lithium-containing high-salinity water. The system for selectively extracting lithium from lithium-containing high-salinity water comprises a lithium-containing high-salinity water selective extraction unit, electrodes arranged on both sides of the lithium-containing high-salinity water selective extraction unit, and an electrode chamber arranged between the lithium-containing high-salinity water selective extraction unit and the electrodes. The lithium-containing high-salinity water selective lithium extraction system can selectively adsorb lithium ions in lithium-containing high-salinity water by using an adsorbent in the adsorption chamber without an external electric field, and can make the lithium ions desorb and regenerate the adsorbent under an external electric field. Through the coupling of the two processes, the lithium ions can be cyclically enriched and concentrated, the desorption efficiency of the lithium ions and the lithium content of the desorption solution can be significantly improved while selectively extracting lithium from the lithium-containing high-salinity water, and the lithium concentration cost of the subsequent desorption solution can be greatly reduced.

The invention provides a device and a method for trapping carbon dioxide by coupling supergravity with in-situ organic steam stripping enhanced ionic liquid, belongs to the technical field of carbon dioxide trapping, and aims to solve the technical problem of poor desorption effect of the ionic liquid. The non-aqueous ionic liquid absorbent is prepared by mixing an ionic liquid, an organic solvent and a steam stripping solvent; raw material gas and a non-aqueous ionic liquid absorbent are introduced into an absorption device for countercurrent contact, the non-aqueous ionic liquid absorbent absorbs carbon dioxide and discharges a non-aqueous ionic liquid-rich solution, the non-aqueous ionic liquid-rich solution is heated to a desorption temperature and sent to a desorption device for separation, and carbon dioxide, stripping steam and non-aqueous ionic liquid absorbent residual liquid are obtained; and condensing the stripped steam to obtain high-purity carbon dioxide gas. The method disclosed by the invention has remarkable advantages in the aspects of reducing the energy consumption of the system, improving the trapping efficiency, simplifying the operation process and the like, and is suitable for CO2 trapping in various occasions, such as coal-fired power plant flue gas, industrial emission tail gas, oilfield associated gas and the like.

The application discloses a kind of adsorption tower adsorbate quick desorption and regeneration device, it is related to adsorbate desorption and regeneration technical field;Specifically including bottom plate, the outer wall of the top of bottom plate is fixed with pedestal by bolt, and the outer wall of the top of pedestal is respectively fixed with fixed seat one and fixed seat two by bolt, and the side of fixed seat one is provided with mounting hole, vertically attached mechanism is arranged in mounting hole, the lifting end of vertically attached mechanism is rotatably connected with attached plate, and attached plate and guide strip form sliding fit, the outer wall of both sides of fixed seat one is fixedly connected with slide strip, slide strip side is slidably connected with sliding block, and sliding block is integrally formed with attached plate, the outer wall of the top of pedestal is provided with positioning mechanism, and adsorbent is clamped between two positioning mechanisms.The distance between high-low adjusting heating plate and adsorbent is adjusted, more uniform heat conduction is realized, the phenomenon of local overheating or overcooling is avoided, so as to improve desorption efficiency.

The utility model provides a carbon tank desorption system and a vehicle, the carbon tank desorption system comprises an air filter, a carbon tank and a heat conduction unit, the air filter is arranged on an air inlet pipeline of an engine, and the carbon tank is connected between an air inlet end of the engine and a fuel tank. The heat conduction unit comprises a flow dividing pipeline and a heat conduction device, the flow dividing pipeline is connected between the air outlet end of the air filter and the air inlet end of the carbon tank, and the heat conduction device is connected between the flow dividing pipeline and an exhaust pipeline of the engine so that gas heat in the exhaust pipeline can be conducted to the flow dividing pipeline. According to the carbon tank desorption system disclosed by the utility model, the heat conduction unit is arranged, so that air which is shunted into the shunting pipeline by the air filter can be heated by heat of gas in the exhaust pipeline through the heat conduction device, and therefore, the temperature of the air at the air inlet end of the carbon tank can be improved, and the desorption efficiency of the carbon tank can be further improved; and excessive pollutant emission caused by excessive loading capacity of the carbon tank is avoided.

The invention discloses a method for separating and recovering hydrogen chloride from tail gas of a process for preparing 1, 2-dichloroethane by an ethane method and application of the method, and belongs to the field of chemical production. According to the method, ethylene glycol is used as an absorbent at room temperature to absorb the 1, 2-dichloroethane process tail gas prepared by an ethane method, and ethylene glycol absorbing hydrogen chloride gas and a residual gas phase are respectively obtained. The inventor finds that ethylene glycol is used as an absorbent, and efficient separation of hydrogen chloride gas in the tail gas of the process for preparing 1, 2-dichloroethane through an ethane method can be well achieved. Meanwhile, separation of hydrogen chloride by ethylene glycol is not affected by side reaction, 1, 2-dichloroethane is a byproduct after ethylene glycol is used for a long time, and 1, 2-dichloroethane is a target product and can be fully utilized. Importantly, the price of ethylene glycol is only 30-50% of that of diethylene glycol and is basically equivalent to that of ethane, so that the problem of cost rise caused by side reaction is avoided, and the economical efficiency and environmental protection benefits of the whole process are remarkably improved.

The invention discloses a VOCs adsorption tower using a honeycomb concentration system, which relates to the technical field of waste gas treatment, and comprises an adsorption tower, an air inlet, a steam mechanism, a flapping mechanism, a second delivery pipe, a one-way valve, a catalytic combustion box, a spraying mechanism, a suction pump, a third delivery pipe, a three-way valve, a connecting pipe, a storage box and a detection mechanism. The air inlet is fixedly connected to the left side of the front end of the adsorption tower, and the steam mechanism is fixedly connected to the top of the adsorption tower. The steam mechanism is arranged to accelerate the cracking and expansion of micro-channels inside the honeycomb activated carbon through steam, thereby improving the desorption efficiency, promoting the growth of the pore wall and the formation of the pore structure, increasing the specific surface area and pore volume of the honeycomb activated carbon, and improving its adsorption performance. Then, the steam temperature is reduced by external water to prevent overdrying and protect the structural integrity of the honeycomb activated carbon. The heating rod is stopped by a first control switch to prevent accidents caused by overheating, thereby protecting the safety of operators and equipment.

The utility model relates to the technical field of VOC (volatile organic compound) waste gas treatment, and discloses a VOC waste gas treatment zeolite powder fluidization desorption device which comprises a base, a stirring barrel fixedly mounted on the side edge of the top end of the base, a motor fixedly mounted at the top end of the stirring barrel, a rotating shaft fixedly mounted at the axis of the motor, and a stirring rod fixedly mounted on the peripheral surface of the rotating shaft, a frame is fixedly mounted at the top end of the stirring barrel, an air inlet pipeline is fixedly mounted on one side of the top end of the stirring barrel, a control valve is fixedly mounted at the middle end of the air inlet pipeline, an exhaust pipe is fixedly mounted on the other side of the top end of the stirring barrel, a first filter plate is fixedly mounted at the bottom end in the exhaust pipe, and a filter barrel is fixedly mounted at the top end; a fan is fixedly mounted at the top end of the base; an air outlet pipe is fixedly mounted on the side edge of the fan; a heater is fixedly mounted at the top end of the air outlet pipe; and an air guide pipe is fixedly mounted at the output end of the heater.