18results about How to "Improve desorption efficiency" patented technology

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.

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.

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 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 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 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.

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 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 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 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.

This application discloses a multi-stage cyclone-type organic waste gas adsorption and purification system. In this system, organic waste gas passes sequentially from bottom to top through the first blades of the first cyclone plates in each layer, forming a rotating mixed flow with the powder adsorption particles on the corresponding first blind plates. The gas and solid phases are in full contact, and the organic components in the gas phase are fully adsorbed by the micropores of the solid. Through multi-stage adsorption, the organic waste gas is effectively purified to meet emission standards. The adsorption-saturated powder adsorption particles are restored to adsorption power by a dual-circulation cyclone desorption and regeneration device and then reintroduced into the multi-stage cyclone-type adsorption and purification device for repeated use.

This invention discloses a V₂O₅-TiO₂ composite honeycomb hollow sphere catalyst and its preparation method. The catalyst is a multilayered hollow sphere formed using V₂O₅-TiO₂ composite oxide as the matrix, wherein the mass ratio of V₂O₅ to TiO₂ is 5:5 to 7:3; the outer diameter of the multilayered hollow spheres is 5 to 20 mm, and the wall thickness is 2 to 12 mm; the sphere walls contain honeycomb-like vertical pores with a pore size of 10 to 50 μm, and the pores account for 15 to 30% of the total sphere wall volume. The V₂O₅-TiO₂ composite honeycomb hollow sphere catalyst of this invention exhibits superior compressive strength and Cl₂ resistance. ‑ The activity retention rate is also significantly reduced, and the desorption temperature and desorption time are also significantly reduced, which can greatly improve the desorption efficiency of amine solution after absorbing saturated CO2.

The application discloses a VOCs removal device for VOCs waste gas treatment technology and relates to the VOCs removal technical field.The device comprises an adsorption bin, a shielding cover is arranged on the front side of the adsorption bin, a hollow fixing rod is fixedly installed in the adsorption bin, fixing side plates are fixedly installed on the front and back sides of the hollow fixing rod, mounting supports are fixedly installed on the fixing side plates in an array, the mounting supports are fixedly installed in the adsorption bin, a rotating ring is rotatably installed on the hollow fixing rod, mounting frames are installed on the rotating ring in an array, activated carbon plates are fixedly installed in the mounting frames, a first electromagnetic valve is arranged on the lower side of the adsorption bin, a second electromagnetic valve is arranged on the side of the adsorption bin, and a second air inlet pipe is fixedly installed on the upper side of the adsorption bin.The activated carbon plates can rotate, the filtering sequence and the filtering surface of the activated carbon plates are adjusted, and the activated carbon plates are efficiently and uniformly utilized.

The invention relates to a drying agent regeneration control method for an air suspension air compressor, which comprises the following steps: when the temperature of the air compressor and the humidity value of a drying agent meet preset conditions, starting regeneration feasibility verification; when the pressure of the external air source is stable and the air supply demand is not influenced, regeneration triggering is confirmed; when an external air tank of the air compressor is supplied with air to a first target pressure, high-pressure air in the external air tank reversely blows the dryer, so that a drying agent in the dryer is desorbed and regenerated; when the pressure of the external air tank of the air compressor is reduced to the second target pressure, air is supplemented again to the first target pressure, and the high-pressure air in the external air tank blows back the dryer until the humidity value of the drying agent is reduced to the ideal humidity value; and the air compressor returns to a normal working state to supply air. A high-pressure blowback mode is combined with temperature maintenance control, so that the desorption efficiency of the drying agent is greatly improved, and the regeneration drainage rate is remarkably improved. The invention further relates to a drying agent regeneration control system for the air suspension air compressor.

The invention discloses a carbon capture device and method, which are used for integrating CO2 absorption and desorption processes of carbon capture in the same device, the device at least comprises: an absorption unit arranged at the upper part of the device; in the absorption unit, the absorption slurry is in contact with carbon-containing gas from top to bottom so as to carry out gas-liquid mass transfer under a high-pressure condition; the solid phase part of the absorption slurry is powder of a supported ionic liquid, and the ionic liquid is an amino-containing ionic liquid; the desorption unit is arranged below the absorption unit and is isolated by a liquid seal; under the vacuum condition, the absorbed slurry is subjected to CO2 desorption in a desorption unit, the desorbed slurry is recycled after being subjected to gas-liquid separation, and CO2 is discharged. According to the invention, the gas-liquid mass transfer efficiency can be effectively improved and the absorption rate of CO2 can be increased through the nano-micro interface strengthening effect; absorption and desorption are integrated into the whole device, different areas are isolated in a liquid sealing mode, and the functions of high-pressure absorption and vacuum desorption can be achieved in the same device.

The utility model discloses an ultrasonic-assisted primary lithium precipitation reaction kettle device which comprises a lithium precipitation reaction kettle and an ultrasonic assembly, wherein the ultrasonic assembly is used for regulating and controlling the particle size of a material subjected to a lithium precipitation reaction and removing foreign ions adsorbed on the surface of the material; the ultrasonic assembly comprises an ultrasonic box body and an ultrasonic device, the ultrasonic box body is communicated with a discharging port in the bottom end of the lithium precipitation reaction kettle through a pipeline, the ultrasonic device is arranged on the ultrasonic box body, the ultrasonic box body is communicated with the upper end of the lithium precipitation reaction kettle through a circulating pipe, a discharging end is arranged on the ultrasonic box body, and a screening net is arranged at the discharging end. The lithium precipitation slurry meeting the particle size after being treated by the ultrasonic device flows out of the discharging end at any time through the material screening net, and the lithium precipitation material not meeting the particle size is circulated into the lithium precipitation reaction kettle through the circulating pipe and is discharged again. The device disclosed by the utility model can improve the production efficiency and guarantee the quality stability of products.