1385results about "Combustible gas purification" patented technology

A direct air capture (DAC) of CO2 system includes a reaction reactor having a solid, amine-functionalized sorbent configured to sequester CO2 from air; an in-situ dual-function device configured as a CO2 conversion reactor and an exchange fluid regeneration device; and the exchange fluid, recirculating between the reaction reactor and the dual-function device, configured to capture the sequestered CO2 from the solid sorbent in the reaction reactor and release the captured CO2 in the conversion reactor, the exchange fluid including one or more amino acids.

The invention discloses a zeolite adsorption and desorption integrated treatment system, and particularly relates to the field of zeolite separation treatment, and the zeolite adsorption and desorption integrated treatment system comprises a process sensing module, a dynamic partition control module, a global optimization control module and a cooling regeneration module. According to the zeolite adsorption and desorption integrated treatment system, the problem of blind operation in the traditional technology is solved through the process sensing module, a data basis is provided for dynamic partition, the intelligent monitoring level is improved, and the performance of an adsorbent is fully exerted; the problem of non-uniform heat and mass transfer of a bed layer is effectively solved through the dynamic partition control module, the desorption heat utilization efficiency is improved, and meanwhile, the service life of an adsorbent is prolonged; a dynamic optimization function is constructed through the global optimization control module, energy consumption, solvent recovery income and stability are comprehensively considered, self-adaptive adjustment of operation parameters is achieved, the energy consumption is reduced while the processing efficiency is guaranteed, and the environmental benefits are remarkably improved.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention discloses a gas purification real-time monitoring method, system and device and a medium, and belongs to the technical field of gas purification. The method comprises the following steps: a data acquisition stage: acquiring inlet gas flow and outlet component data; in the adsorbent state monitoring stage, the adsorbent state is monitored in real time through the monitoring point position in the adsorption barrel; in the adsorption capacity calculation stage, the residual adsorption capacity is predicted through an impurity penetration curve model on the basis of inlet flow and outlet component data, and bidirectional verification and correction are carried out on the residual adsorption capacity and an internal monitoring state; in the regeneration time prediction stage, the optimal regeneration time is dynamically predicted according to discharged gas component analysis and residual adsorption capacity; in the real-time regulation and control stage, parameters of the purifier and the regenerative heater are adjusted in real time according to the prediction result. Accurate evaluation of the state of the adsorption cylinder and intelligent optimization of the regeneration process are achieved, the utilization rate of the adsorption cylinder is remarkably increased, and the total energy consumption of regeneration is reduced.

The invention relates to the technical field of activated carbon adsorption towers, in particular to a self-cleaning circulating type industrial organic waste gas activated carbon adsorption tower which comprises an adsorption tower body, an adsorption mechanism is arranged on the outer side of the adsorption tower body, and a recycling mechanism is arranged on the front side of the adsorption mechanism. The adsorption mechanism comprises a vibration assembly, a sweeping assembly, a leading-in assembly, a conveying assembly and a flow dividing assembly, the vibration assembly is arranged on the inner side of the adsorption tower body, the sweeping assembly is arranged on the inner side of the vibration assembly, the leading-in assembly is arranged on the inner side of the vibration assembly, and the conveying assembly is arranged on the top of the vibration assembly; the flow dividing assembly is arranged on the front side of the conveying assembly. The invention provides a self-cleaning circulating type industrial organic waste gas activated carbon adsorption tower which is provided with a structure for circularly cleaning and recycling residual impurities, so that the residual impurities on the surface of an activated carbon plate can be cleaned and recycled, and the long-term use stability of the activated carbon plate is improved.

The invention discloses an organic waste gas steam desorption, condensation, regeneration and recovery device, and relates to the technical field of organic waste gas regeneration and recovery, the organic waste gas steam desorption, condensation, regeneration and recovery device comprises an adsorption box and a first fan, one side of a rotating plate is provided with an alternating mechanism, and the top end of a condensation cylinder communicates with a self-cleaning mechanism; the alternating mechanism and the self-cleaning mechanism are dual systems, the alternating mechanism adopts a four-turntable modular design, each turntable bears a plurality of condenser pipes, and the condenser pipes can be quickly taken and placed through station alternating driven by a rotating plate in cooperation with rotating positioning of the turntables; the self-cleaning mechanism is provided with an overturning roller, automatic taking and placing of the condensation pipe are completed under the condition that a condensation shell is kept in a sealed state, and after the condensation pipe is transferred to a brushing station through a clamping head, surface attachments are efficiently removed through relative rotation movement of a pipe body and bristles. According to the composite design, the whole-process non-stop operation is realized in a breakthrough manner, the continuous and stable operation of the organic waste gas treatment system is ensured, the overall treatment efficiency is improved, and meanwhile, the maintenance cost is reduced.

The invention relates to the technical field of water treatment filter materials, in particular to an intelligent clean gradient composite water purification filter element and a preparation method thereof. The filter element adopts an integrated design of'natural gradient base material + ZIF-67 function enhancement + fluorescence-ultrasonic intelligent regeneration ': modified vegetable sponge is used as a porous support layer, a silica gel / ZIF-67 composite gradient layer is constructed on the porous support layer to realize adsorption and antibacterial dual functions, and dopamine-aluminum ions are used for composite surface modification to enhance hydrophilicity and interlayer binding force; a matched automatic system senses pollution in real time through the fluorescence monitoring module and triggers the ultrasonic regeneration module to complete self-cleaning, and the flux recovery rate is larger than or equal to 97.5%; the interception rate of the filtering element to anabaena under the operation pressure of 0.1-0.3 MPa is larger than or equal to 99.2%, the filtering flux is increased by 6-8 times compared with that of a commercial element, the filtering element can tolerate complex water quality in the coexistence of drugs and personal care products, natural vegetable sponge serves as a base material, and the filtering element has the advantages of biocompatibility and low cost and is suitable for drinking water purification and eutrophication water body treatment.

The invention discloses a real-time monitoring data control method for adsorption separation and an adsorption separation device, and relates to the technical field of adsorption and analysis regulation and control. The method comprises the following steps: setting a first cleanliness threshold value of finished gas and a second cleanliness threshold value of desorption gas; according to the current state of the first cleanliness and the current state of the second cleanliness, the regeneration medium flow of the analysis process is dynamically adjusted; or when the first cleanliness reaches the first cleanliness threshold value and the second cleanliness reaches the second cleanliness threshold value, the current adsorption process is ended, and the working mode is switched; if the second cleanliness does not reach the threshold value, the regeneration medium flow is increased until the switching condition is met. Saturation regulation is carried out by monitoring the dual states of the finished gas and the desorption gas in real time, actual working condition fluctuation can be responded in a self-adaptive mode, the quality stability of the finished gas is guaranteed, meanwhile, the problem that regeneration is insufficient or regeneration media are excessively consumed is solved, and operation energy consumption is remarkably reduced.

The utility model discloses a liquefied air energy storage system which comprises a molecular sieve water separator and a molecular sieve adsorption tower, a separator air output pipe is connected with a top gas connecting pipe of the molecular sieve adsorption tower, and a bottom gas connecting pipe of the molecular sieve adsorption tower is connected with a cold box front compressor unit. The cold box front compressor unit is communicated with an air pipeline in the cold box, and an outlet of the air pipeline in the cold box is communicated with a first liquefied air storage tank through a first liquefied air output pipe with a first throttling valve; the output end of a liquid air pressure pump on a first liquefied air storage tank output pipe of the first liquefied air storage tank is communicated with the air input end of the expansion unit, the air output end of the expansion unit is provided with a hot blowing conveying pipe and a cold blowing conveying pipe, and the hot blowing conveying pipe is communicated with a bottom gas connecting pipe through a first heater and an electric heater; and the output end of the cold blowing gas conveying pipe is connected to the output end of the electric heater output pipe. The device has the advantages of simple structure, low energy consumption and full utilization of heat energy.

The utility model relates to the technical field of coking, in particular to a high-performance spray type saturator. The main body structure is a vertical container, the lower part of the container is a crystallization chamber, the upper part is an absorption chamber, and the absorption chamber is communicated with the crystallization chamber through an inner conical section and a downcomer; the lower part of the spiral deacidification device is positioned in the absorption chamber, the upper part of the spiral deacidification device is higher than the absorption chamber, and the spiral deacidification device, the absorption chamber and the crystallization chamber are coaxially arranged. Coke oven gas enters the absorption chamber of the saturator from the gas inlet and is in countercurrent full contact with spraying mother liquor in the absorption chamber to remove ammonia in the gas, then the gas enters the spiral acid remover, and most liquid drops in the gas are removed under the action of a spiral structure, so that the gas and the liquid are better separated, and meanwhile, the gas flow resistance is reduced.

The embodiment of the utility model provides zero-emission methanol preparation equipment based on garbage gasification and water electrolysis. The equipment comprises a water electrolysis hydrogen production unit, a garbage gasification unit, a first methanol synthesis unit, a second methanol synthesis unit and a gas separation unit, the water electrolysis hydrogen production unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the gas separation unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the water electrolysis hydrogen production unit generates hydrogen and oxygen through electrolysis; the garbage gasification unit is used for carrying out gasification reaction by using oxygen provided by the water electrolysis hydrogen production unit to prepare synthesis gas containing carbon monoxide, carbon dioxide and hydrogen; the gas separation unit is used for separating carbon monoxide, carbon dioxide and hydrogen in the synthesis gas introduced from the garbage gasification unit, the carbon monoxide and the hydrogen are introduced into the first methanol synthesis unit, and the carbon dioxide is introduced into the second methanol synthesis unit for preparing methanol respectively.

Processes and apparatuses for degrading PFAS into calcium fluoride, carbon dioxide, and water. PFAS are heated and introduced to a calcium base which will degrade the PFAS. The PFAS may be in a stream that is a PFAS enriched stream formed by desorbing the PFAS from an adsorbent which removed the PFAS from a contaminant stream. The PFAS may be desorbed in the presence of the calcium base. The calcium base may be calcium hydroxide, calcium oxide, calcium carbonate, or combinations thereof.

The invention belongs to the technical field of water treatment, and particularly relates to a preparation method and application of a PDA / CS composite adsorbent loaded with a bimetallic system, and the preparation method comprises the following steps: 1) dissolving dopamine in a Tris buffer solution to prepare a dopamine prepolymer solution; then adding FeCl3, and carrying out constant-temperature water bath; centrifuging the obtained black suspension, performing suction filtration, washing, collecting a filter cake, and performing freeze drying to obtain PDA microspheres; 2) dispersing PDA microspheres in deionized water, and carrying out ultrasonic treatment until the PDA microspheres are uniformly dispersed; 3) dissolving chitosan in an acetic acid solution, and adding CuCl2 to prepare a mixed solution; the suspension obtained in the step 2 is dropwise added into a mixed solution for constant-temperature water bath, the pH of the mixed solution is adjusted through a NaOH solution, glutaraldehyde is added for constant-temperature water bath after constant-temperature water bath, and 4, the obtained suspension is subjected to centrifugation, suction filtration, washing, filter cake collection and freeze drying.

The invention discloses a treatment device and a treatment method for adsorbing and desorbing VOCs (Volatile Organic Compounds) waste gas by using a zeolite molecular sieve, and relates to the technical field of waste gas treatment. The treatment device for adsorbing and desorbing the VOCs waste gas through the zeolite molecular sieve comprises a shell, the interior of the shell is divided into an adsorption area, a desorption area and a cooling area, and the treatment device further comprises fan-shaped zeolite sheets and a round zeolite rotating wheel which is arranged in the shell and is formed by splicing the multiple fan-shaped zeolite sheets; the rotating shaft is located in the middle of the zeolite rotating wheel, and the fan-shaped zeolite sheets can move on the rotating shaft in the axial direction. According to the invention, the plurality of fan-shaped zeolite sheets are arranged and spliced to form the circular zeolite rotating wheel, and under the cooperation of the sliding parts and the guide grooves, the two adjacent fan-shaped zeolite sheets are controlled to be staggered in the axial direction of the zeolite rotating wheel when being positioned in the desorption area and the cooling area, so that the contact area between the fan-shaped zeolite sheets and hot air and cooling air is increased, and efficient desorption and cooling are favorably realized.

A method for harvesting water includes contacting a nanoporous carbon (NPC) material with a stream of humid atmospheric air, thereby at least partially absorbing water in the form of molecules on surfaces and pores of the NPC material to form a sample, releasing the water from the sample by thermally heating the sample or exposing the sample to ultraviolet-visible (UV-Vis) radiation; and collecting the water. A method of making the NPC material by calcining one or more petroleum feedstocks is also disclosed.

Provided are methods of extracting lithium from a lithium containing solution, as well as the resulting compositions. The method includes supplying a lithium containing solution to a lithium capture step, the lithium capture step being operable to capture lithium from the lithium salt containing solution. The method further includes recovering lithium from the lithium capture step to produce a lithium rich stream. In especially preferred methods, the lithium capture step is performed to increase the lithium to sodium ratio above at least 1:1. Optionally, the lithium rich stream can be purified to remove divalent ions and borate ions. The lithium rich stream is then concentrated by supplying the lithium rich stream to a reverse osmosis step to produce a concentrated lithium rich stream.

The invention discloses a photo-thermal carbon dioxide adsorbent as well as a preparation method and application thereof. The photo-thermal carbon dioxide adsorbent is green in production process and wide in raw material source, chitosan which is high in natural abundance and low in price is directly used as a raw material, and the energy consumption in the preparation process is effectively reduced through a composite pore-forming strategy that an activating agent, a pore-forming agent and a nitrogen source are introduced through a one-pot method. The photo-thermal carbon dioxide adsorbent provided by the invention can realize direct carbon capture in normal-temperature air or adsorption separation of CO2 in flue gas, and then realizes zero-carbon desorption under sunlight irradiation, thereby providing a new idea for capture, utilization and storage of carbon dioxide.

The invention discloses a cyclic regeneration treatment method of stainless steel pickling waste liquid, which realizes full-flow recycling of the pickling waste liquid by constructing a closed-loop system of pretreatment, adsorption, desorption, recovery, regeneration and circulation. A molecularly imprinted polymer adsorption technology is adopted, targeted capture of Cr < 3 + >, Ni < 2 + > and Fe < 2 + > / 3 < + > is achieved through specific recognition sites, and the bottleneck that a traditional adsorbent is poor in selectivity is broken through; the supercritical CO fluid extraction technology utilizes the characteristics of high diffusivity and low surface tension, efficient desorption of metal ions is achieved under mild conditions, and secondary pollution caused by a traditional organic solvent is avoided. A technical closed loop is formed among the steps through parameter synergy and substance circulation, and finally the dual purposes of full-amount regeneration of the pickling waste liquid and efficient recovery of metal resources are achieved.

The invention relates to the technical field of memory bank testing, in particular to a memory bank aging testing device and method.The memory bank aging testing device comprises a testing box, a testing cavity is formed in the testing box, a testing plate is arranged in the testing cavity, and a memory bank is inserted into the testing plate. A double-shaft motor is matched with an electromagnetic clutch to respectively drive a soaking mechanism and a heat recovery mechanism, a reciprocating screw rod drives an extension box to move up and down in a reciprocating manner, a toothed plate and a driving gear are in meshing transmission, so that a rotating pipe rotates while moving, and a spray pipe forms composite sweeping airflow; dehumidification and regeneration are synchronized through cooperation with continuous rotation of the rotary box, closed-loop air treatment is formed, dynamic and uniform distribution of hot air in the test cavity is achieved, temperature stratification is effectively eliminated, meanwhile, energy consumption is remarkably reduced through waste heat recovery and medium regeneration, and the test efficiency is improved. And high uniformity, high cleanliness and low-energy-consumption operation of a high-temperature aging test environment are guaranteed.

The invention relates to the technical field of organic functional material synthesis and mycotoxin removal, in particular to a magnetic covalent organic framework for adsorbing zearalenone and a preparation method and application thereof.The magnetic covalent organic framework is Fe3O4 (at) COF-VPBA and is prepared from 1, 3, 5-tris (4-aminophenyl) benzene, 2, 5-dimethoxy terephthalaldehyde, 4-alkenyl phenylboronic acid, boron trifluoride diethyl etherate, 2, 3-dichloro-5, 5-di (4-aminophenyl) benzene, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2 The catalyst is prepared from 2, 6-dicyano-1, 4-benzoquinone and nano ferroferric oxide through a four-component one-pot in-situ Povarov reaction. According to the method, the process is simplified, the defects of a fractional step method are avoided, due to specific covalent binding of boric acid groups and ZEN catechol hydroxyl groups, the adsorption capacity and the adsorption rate are remarkably superior to those of traditional and unfunctionalized adsorption materials, the adsorption rate still exceeds 90% after acetonitrile is eluted and regenerated and is repeatedly used for more than 5 times, and the comprehensive requirements of high selectivity, high adsorption capacity, easiness in separation and recyclability are met.

The present application relates to the technical field of direct air carbon capture, in particular to a solar-driven air thermo-chemical deoxidization direct air carbon capture method and system, the present application adopts chemical looping air separation technology, first removes oxygen in air through an oxidation reactor and a reduction reactor, then sends the oxygen-poor air into a DAC carbon capture unit for decarburization, which can greatly reduce the air treatment amount of the DAC unit; at the same time, the present application uses solar energy to power the chemical looping reduction reactor, realizing clean and efficient power supply of the DAC unit; therefore, the solar-driven air thermo-chemical deoxidization direct air carbon capture method and system of the present application adopts a combination of chemical looping air separation and DAC, and uses the oxygen-poor air at the outlet of the chemical looping air separation oxidation reactor to drive a waste heat power generation unit to generate power, so as to meet the power and steam supply of the air decarburization process, thereby solving the problems of high energy consumption and high cost of the existing DAC technology.

The invention relates to the technical field of industrial VOCs treatment, in particular to a multistage heat pump coupling microwave desorption system which comprises a microwave targeted preheating module, a heat pump gradient heating module, a low-pressure desorption environment construction module and a waste heat recovery network. The heating device is used for selectively heating a VOCs enrichment area; the heat pump gradient heating module adopts a multi-stage heat pump system, the adsorbent is heated to 130-160 DEG C from 70 DEG C in a gradient manner, and the heating rate is 8 DEG C / min; the low-pressure desorption environment construction module is used for designing a negative pressure pipeline based on the Venturi effect to form a-1.5 kPa desorption environment; and the waste heat recovery network comprises a plate heat exchanger and a heat pump evaporator and is used for realizing efficient recovery of desorption waste gas waste heat. The gradient activation composite zeolite rotating wheel and the AI dynamic regulation and control platform are matched, real-time optimization of microwave power, heat pump output and negative pressure parameters is achieved, and the device is suitable for treatment of high-concentration VOCs in the industries of coating, rubber, printing and the like.

A heater element 1 includes: a honeycomb structure 10 having an outer peripheral wall 100 and partition walls 110, the partition walls 110 defining a plurality of cells 101a, each of the cells 101a extending from a first end face 10a to a second end face 10b of the honeycomb structure 10 to form a flow path, at least the partition walls 101 being made of a material having a positive temperature coefficient (PTC) property; a first electrode 11 and a second electrode 12 provided on the first end face 10a and the second end face 10b, respectively; and a first metal terminal 13 and a second metal terminal 14 provided on the first electrode 11 and the second electrode 12, respectively, wherein at least one of the first metal terminal 13 and the second metal terminal 14 has a plurality of partial electrodes 15.

The invention belongs to the technical field of carbon dioxide trapping, and particularly relates to a fluidized bed device for direct air trapping of carbon dioxide and a using method thereof.The fluidized bed device comprises a flowing rail car, hollow supporting pipes are fixed to the four end corners of the top of the flowing rail car, and a shell is fixed to the tops of the multiple hollow supporting pipes; a discharging cavity and a material collecting cavity are formed in the shell, a plurality of trays are assembled at the upper end of the flowing rail car and are sequentially arranged in the direction of the positive vertical plane, adsorption media are placed in the trays, a plurality of supporting rods are fixed among the trays and are distributed in a linear shape, and the supporting rods are arranged in the shell. And a plurality of air holes are uniformly formed in the side wall of the tray. Unipolar charges are released to the dust collection coiled material through the discharging rod, so that the dust collection coiled material can adsorb dust close to the tray, and the situation that dust in air falls on the surface of an adsorption medium, and the carbon dioxide trapping efficiency of the adsorption medium is reduced is avoided.

Compositions and methods for removing hydrogen sulfide, gas phase thiol, carbonyl sulfide, and combinations thereof from a gas / vapor stream are provided by utilizing a renewable formulation medium. The composition may include an activated carbon media (BCT-AC media) treated with a binding complex. The compositions and methods offer advantages over currently known technologies by reducing the number of process steps required and thus reduced capital and operating costs, and eliminating aqueous phase processes that are expensive to run and produce undesired waste by-products. In addition, the provided compositions and methods remove hydrogen sulfide as recoverable elemental sulfur, and are ideally suited for use in gas / vapor reactions in which carbon dioxide may be present, as it has no process or economic impact on the composition or process.

The invention belongs to the technical field of biomass energy, and discloses an energy system based on biomass gasification, which is characterized in that biomass is converted into high-temperature synthesis gas flow by a gasification furnace, the high-temperature synthesis gas flow enters a carbon dioxide supercritical device to heat carbon dioxide fluid into supercritical fluid so as to drive power generation, and medium-high-temperature synthesis gas flow is formed; the medium-high-temperature synthesis gas flow enters the organic Rankine cycle device to heat and evaporate the organic fluid into high-enthalpy fluid to drive power generation and form medium-low-temperature synthesis gas flow, and the medium-low-temperature synthesis gas flow enters the seawater desalination device to evaporate and separate seawater into fresh water and saline water and form low-temperature synthesis gas flow; the methanol synthesis device captures hydrogen and carbon dioxide in the low-temperature synthesis gas flow and synthesizes methanol; electric energy and fresh water are obtained through stepped utilization of heat energy of synthesis gas flow, the energy utilization rate is greatly improved, hydrogen energy is obtained by capturing hydrogen in the synthesis gas flow, and carbon dioxide in the synthesis gas flow is further captured to synthesize methanol with the hydrogen.

The invention discloses a zeolite rotating wheel purification device which comprises a base, an air inlet box fixedly connected to one side of the upper surface of the base, an air outlet box fixedly connected to the side, away from the air inlet box, of the upper surface of the base, a rotating wheel mounting box arranged between the air inlet box and the air outlet box, a first function box and a second function box. First supports are fixedly connected to the two sides of the inner side wall of the rotating wheel mounting box, a rotating shaft is rotationally connected between the first supports, a rotating wheel body is arranged on the outer side wall of the rotating shaft, and a separation driving assembly used for driving the rotating shaft to rotate is arranged on the base. Through the arrangement of the gas inlet box, the gas outlet box, the rotating wheel mounting box, the first function box and the second function box, the adsorption cavity, the cooling cavity and the desorption cavity can be integrally and quickly disassembled and assembled while forming a continuous working structure around the rotating wheel body, so that the overhaul and maintenance of equipment are completed under the condition that the whole box body structure is not disassembled.

Described herein is a method for reducing the amount of carbon dioxide in a gaseous composition comprising exposing the gaseous composition to a sorbent composition comprising calcined marble; wherein the gaseous composition comprises less than about 1 vol.% of carbon dioxide and the gaseous composition has a temperature of about 70°C or less. Also, a method for producing a gaseous composition comprising carbon monoxide comprising (i) exposing a first gaseous composition comprising carbon dioxide to a sorbent composition comprising calcined marble; wherein the first gaseous composition comprises less than about 1 vol.% of carbon dioxide and the first gaseous composition has a temperature of 70°C or less; and (ii) heating the sorbent composition obtained in (i) in the presence of hydrogen at a temperature of about 500°C or more to yield a second gaseous composition comprising carbon monoxide.

The present application relates to the field of aluminum hydroxide-based lithium adsorbent, and discloses a cleaning agent composition, a cleaning agent and a regeneration method of aluminum hydroxide-based lithium adsorbent. The cleaning agent composition of the present application contains an aluminum flocculant, an ammonium salt, lithium chloride, a citrate, an acid and an emulsifier. The cleaning agent of the present application ensures the cleaning effect, and the adsorption performance of the cleaned adsorbent can be restored to more than 96% of the original adsorption capacity, and the adsorbent has no obvious solution loss.

The utility model relates to a molecular sieve regeneration device for liquid nitrogen wash purified gas of a synthetic ammonia production device. In the device, a low-pressure nitrogen pipeline is connected with a molecular sieve adsorber, the bottom of the molecular sieve adsorber is connected with a nitrogen heater through a pipeline, and the nitrogen heater is connected to a phosphoric acid device hot blast stove through a fuel gas pipeline. The top of the molecular sieve adsorber is connected with the liquid nitrogen washing cold box. A track ball valve I is arranged on a connecting pipeline between the bottom of the molecular sieve adsorber and the nitrogen heater; and a regulating valve II is arranged on the nitrogen heater and the fuel gas pipeline. According to the utility model, high-concentration CO adsorbed by the molecular sieve is sent to the hot blast stove of the phosphoric acid device for combustion at the initial stage of the regeneration preheating stage of the liquid nitrogen wash molecular sieve, thereby improving the automatic control level of molecular sieve regeneration programs; the problem of fluctuation of a low first washing device during regeneration of the molecular sieve is effectively solved, the problem that a combustible poisonous gas detector gives an alarm due to direct emptying of high CO during regeneration is thoroughly solved, and part of energy is recycled.