146 results about "Carbon dioxide absorber" patented technology

The invention relates to a long-term stable carbon dioxide absorbent and a preparation method and application thereof, preparation raw materials of the carbon dioxide absorbent comprise a quaternary ammonium salt hydrogen bond acceptor, an amine compound, an alcohol hydrogen bond donor and a reinforcing agent, and the reinforcing agent comprises sorbitol, boric acid or nano silicon dioxide. The carbon dioxide absorbent disclosed by the invention not only has excellent absorption and desorption effects, but also is creatively added with the reinforcing agent. By adding the reinforcing agent, the long-term operation stability of the absorbent under an oxygen-containing condition can be remarkably improved on the premise that the original excellent CO2 absorption and desorption performance is not influenced basically, and oxidative degradation of amine components is effectively inhibited. The composition is simple to prepare and controllable in cost, and is suitable for efficiently and stably capturing CO2 from gas mixtures such as industrial flue gas.

To provide a carbon dioxide absorbent composition having high absorption performance and a long lifetime.SOLUTION: A composition comprises: a compound (A) represented by the general formula (1) in the figure [where R1 to R6 each independently represent a hydrogen atom, or an alkyl or alkoxy group having 1 to 4 carbon atoms, and a, b and c each independently represent 0 or 1]; and an antioxidant (B).SELECTED DRAWING: None

The invention relates to the field of medical instrument consumables, and discloses an external multifunctional anesthetic gas carbon dioxide absorber which is characterized in that an upper box body is provided with a first carbon dioxide absorption chamber, a second carbon dioxide absorption chamber, an anesthetic gas absorption chamber, a damp-heat exchange chamber, an electronic tag and a gas sampling hole; the lower box body is provided with a gas distribution chamber and a ventilation switch mechanism, the gas inlet channel is communicated with the first carbon dioxide absorption chamber, and the second carbon dioxide absorption chamber and the anesthetic gas absorption chamber are communicated with the gas outlet channel through the damp-heat exchange chamber. Carbon dioxide is absorbed during operation, and anesthetic gas is adsorbed during postoperative resuscitation; sufficient and efficient absorption of carbon dioxide can be ensured, and the color change identification degree is improved; the gas distribution chamber can effectively reduce gas resistance and conduct heat dissipation and cooling, and the damp-heat exchange chamber is arranged, so that the temperature and humidity of circulating gas are effectively regulated and controlled, and the potential dust risk of the gas is blocked.

The utility model relates to the technical field of carbon capture, in particular to a carbon dioxide absorbent performance evaluation device which comprises an absorption tower, a phase splitter and a falling film evaporation desorption device, the cavity of the absorption tower is filled with a filler layer, and the phase splitter is provided with a gas inlet for introducing a gas source with carbon dioxide into the cavity; a liquid inlet communicated with the cavity is formed in the top of the absorption tower and is used for introducing an absorbent into the cavity, and the carbon dioxide and the absorbent are in full contact in the filler layer, so that the absorbent forms a mixed solution; the phase splitter is provided with an inlet and a rich phase outlet, the inlet is communicated with the cavity, so that the mixed liquid flows into the phase splitter, the phase splitter is used for carrying out phase splitting on the mixed liquid to form an absorbent rich solution, the rich phase outlet of the phase splitter is connected with the falling film evaporation desorption device, and the falling film evaporation desorption device is used for desorbing the absorbent rich solution. The carbon dioxide packed tower fully considers the characteristics of the carbon dioxide packed tower applied in practical engineering, the absorbent fully absorbs carbon dioxide through the absorption tower in a laboratory, and the test accuracy is high.

According to the carbon dioxide absorbent formula optimization method, the electronic equipment and the storage medium, by introducing an adaptive particle swarm optimization (APSO) and a dynamic penalty function, a large amount of absorbent physical property and performance data are integrated and intelligently analyzed, dynamic adjustment of constraint conditions and conversion of an unconstrained optimization problem are achieved, and the carbon dioxide absorbent formula optimization efficiency is improved. Furthermore, an absorbent formula with the lowest cost and performance indexes such as the absorption rate, the circulation capacity and the desorption energy consumption meeting the requirements is efficiently and accurately screened out, so that the economical efficiency and the operation stability of a CO2 trapping technology are remarkably improved.

Provided is a carbon dioxide absorbent that has excellent carbon dioxide absorption performance. The present invention provides a compound for a carbon dioxide absorbent, said compound being characterized by being a phosphine oxide compound represented by general formula (1) (where, a, b, and c each represent an integer of 1-10, R1, R2, and R3 each independently represent an amino group or a hydroxy group, and at least one of R1, R2, and R3 represents an amino group).

The utility model discloses a carbon dioxide concentration monitoring and purifying device which comprises a base, a purifying vessel movably connected between the two sides of the base, a first sealing cover arranged at the top of the purifying vessel, a detection assembly arranged at the top of the base, a plurality of purifying bins arranged in the purifying vessel, and carbon dioxide absorbent particles placed in the purifying bins. First through grooves are formed among the multiple purification bins, first gears are made to rotate under the action of a first driving motor, spiral stirring blades stir carbon dioxide absorbents in the purification bins through cooperation of the first gears and second gears, and the carbon dioxide absorbents on the upper layer and the lower layer are made to alternate in a reciprocating mode. The problems that most of existing carbon dioxide concentration monitoring and purifying devices use carbon dioxide absorbents to purify carbon dioxide, but the carbon dioxide absorbents are accumulated in the devices and are in a standing state, the absorbents on the upper layer always work firstly during absorption, the utilization efficiency of the absorbents on the lower layer is low, and the cost is low are solved. And waste is caused to a certain extent.

This carbon dioxide absorption method includes a step (A) for causing a carbon dioxide absorbent (a) to absorb carbon dioxide in the absence of a liquid solvent, said carbon dioxide absorbent (a) having at least one amino group and containing an amine compound in liquid form at room temperature.

The present invention belongs to the technical field of polymer materials, and specifically relates to a vegetable oil-based carbon dioxide absorbent, its preparation method and antibacterial application. In the present invention, oleic acid chains or epoxidized oleic acid chains are introduced onto the molecules of typical amine absorbent polyethyleneimine. The non-polar long carbon chain fatty acid structure can significantly weaken the hydrogen bonds between polyethyleneimine molecules, reduce the intermolecular force, so that more amino groups are exposed to combine with carbon dioxide, realizing the efficient, high-capacity and low-energy consumption absorption of carbon dioxide. In the present invention, the unsaturated carbon-carbon double bonds on the oleic acid chains are epoxidized and modified, introducing more secondary amines, further improving the carbon dioxide absorption capacity. Moreover, after absorbing carbon dioxide, the tertiary amines in the molecular structure are converted into quaternary ammonium salt ions, endowing it with excellent antibacterial properties, showing excellent antibacterial effects against both Staphylococcus aureus and Escherichia coli, and can be used as an antibacterial agent.

The present invention provides: an alkyleneimine polymer which has little coloration, high solubility in water, and excellent storage stability in an aqueous solution, and has reduced deterioration; and a method for producing the same. The present invention also provides a carbon dioxide absorbent material which is excellent in terms of carbon dioxide adsorption / desorption capacity (especially, carbon dioxide adsorption / desorption capacity retention rate and carbon dioxide desorption rate).　This alkyleneimine polymer comprises a structural unit (A) represented by general formula (1) (in general formula (1), either N is a primary amine) and a structural unit (B) represented by general formula (2), and has a number average molecular weight (Mn) of 250 to 50,000. (In general formula (2), X represents an organic group having 3 to 20 carbon atoms.)

The utility model relates to the technical field of carbon dioxide absorbents, and solves the problems that when the carbon dioxide absorbents are processed and mixed, the carbon dioxide absorbents with the same particle size cannot be obtained during processing and mixing due to the fact that the chemical component of the carbon dioxide absorbents is calcium hydroxide and the carbon dioxide absorbents are granular substances, and later use is affected. The carbon dioxide absorbent mixing equipment comprises a box body, a square groove is formed in one side of the top end of the box body, an inclined pipe is arranged in the square groove, a motor plate is arranged on one side of the top of the inclined pipe, and a supporting plate is fixedly connected to the edge of the side face of the box body; the inner wall of the box body is fixedly connected with a vibration assembly used for screening and removing impurities in the carbon dioxide absorbent, the vibration assembly comprises a square frame fixedly connected to the inner wall of the box body, the top of the square frame is fixedly connected with a plurality of springs, and the tops of the springs are fixedly connected with a plate frame; the side face of the plate frame is fixedly connected with a connecting plate.

The utility model discloses a carbon dioxide absorbent detection device for a compressed oxygen self-rescuer, which relates to the technical field of carbon dioxide absorbent detection and comprises a detection device body, a liquid inlet pipe, a liquid discharge pipe and a support ring. The top of the right side of the detection device body is communicated with one end of a liquid inlet pipe, and the bottom of the right side of the detection device body is communicated with one end of a liquid discharge pipe. According to the utility model, the thermal insulation observation assembly is arranged to cooperate with the detection adjustment assembly to stably carry out thermal insulation protection on the outer side of the detection device body, and the temperature can be adjusted to facilitate detection, so that the problem that the existing detection device cannot isolate the temperature during use; the problems that the detection device is easily influenced by external temperature during reaction, data deviation is caused during detection of the detection device, and the use effect of the detection device is reduced are solved, and the effect of thermal insulation detection is achieved.

Conventionally, CO2 absorbents such as isophorone diamine are used, and the CO2 absorption process at low temperatures and the CO2 extraction process at high temperatures are carried out in separate tanks. However, once the CO2 absorbent such as isophorone diamine absorbs CO2 and solidifies (changes into carbamic acid), it becomes difficult to move it to the other tank, which presents a problem. [Solution] Even when CO2 absorbents such as isophorone diamine absorb CO2 and solidify (change into carbamic acid), the system does not require movement. By creating a (medium to high) vacuum inside the tank, the amount of air inside the tank is reduced, and the concentration of CO2 extracted from the carbamic acid increases accordingly.

Provided is a novel trialkylphosphine oxide having an alkyl group in which an amino group is bonded to an alkyl group. The present invention relates to a phosphine oxide compound characterized by being represented by general formula (1) (in the formula, a, b and c each represent an integer of 1 to 10, R1, R2, and R3 each independently represent a primary amino group, a secondary amino group, or a tertiary amino group, and at least one among R1, R2, and R3 is a secondary amino group or a tertiary amino group.)

Provided is a modified polyalkyleneimine that exhibits an excellent durability and an excellent carbon dioxide adsorption / desorption capability.　The modified polyalkyleneimine has a structural unit (I) derived from a polyalkyleneimine and has a substituent (A) represented by general formula (1). The molar ratio [substituent (A) / primary amino group in the structural unit (I)] of the substituent (A) to the primary amino group contained in the structural unit (I) in the modified polyalkyleneimine is not greater than 20 / 80.　(1) *– CH2 – CH ( – R1) – X (In general formula (1), X represents a monovalent group having 1 to 30 carbons, a nitro group, or a halogen atom; R1 represents a hydrogen atom or methyl group; and the * (asterisk) denotes a direct bond to a nitrogen atom contained in an amino group in the structural unit (I).)

The present invention provides: a carbon dioxide absorbing liquid which has excellent carbon dioxide absorbing performance; a carbon dioxide absorbing liquid which is capable of easily desorbing carbon dioxide when the absorbing liquid is regenerated in addition to having the above-described carbon dioxide absorbing performance; a method for separating carbon dioxide and a method for separating and recovering carbon dioxide, each using the carbon dioxide absorbing liquid; and a device using the carbon dioxide absorbing liquid. The present invention relates to a carbon dioxide absorbing liquid which contains a solvent and a phosphine oxide compound represented by general formula (1) (wherein a, b, and c each represent an integer of 1 to 10, R1, R2, and R3 each independently represent an amino group or a hydroxy group, and at least one of R1, R2, and R3 is an amino group).

The invention relates to the field of carbon dioxide capture, and provides a carbon dioxide absorbent pregnant solution double-tower cascade catalytic desorption system and method. The carbon dioxide absorbent rich liquor double-tower cascade catalytic desorption system comprises a low-temperature catalytic desorption tower, a solid acid catalyst packing layer is arranged in the low-temperature catalytic desorption tower, and an absorbent liquid outlet is formed in the tower bottom of the low-temperature catalytic desorption tower; the high-temperature thermal desorption tower is connected with the low-temperature catalytic desorption tower in series, a common filler layer without catalytic action is arranged in the high-temperature thermal desorption tower, and an absorbent liquid inlet is formed in the top of the high-temperature thermal desorption tower; an absorbent liquid outlet of the low-temperature catalytic desorption tower is communicated with an absorbent liquid inlet of the high-temperature thermal desorption tower through a pipeline, and the low-temperature catalytic desorption tower is used for conveying the absorbent subjected to low-temperature catalytic desorption to the high-temperature thermal desorption tower for high-temperature thermal desorption. According to the carbon dioxide absorbent pregnant solution double-tower cascade catalytic desorption system, the desorption temperature can be reduced, and the cyclic loading capacity of the absorbent can be ensured.

The present invention relates to a carbon dioxide absorbent. Specifically, in order to complement a short gas / liquid contact time of an RPB device, the carbon dioxide absorbent includes: a first compound and a second compound including two different alkanolamines; and a third compound including a cyclic tertiary amine, in specified contents, thereby maintaining low heat of reaction and improving absorption capacity and absorption rate.

The present invention provides: a method for producing dehydrated steam gas, said method including selectively removing water vapor in atmospheric air by passing the atmospheric air through an ionic liquid membrane; a method for recovering CO2 using the same; a method for producing a chemical reaction product of CO2 and a CO2 absorbent; a CO2 gas recovery system; and an ionic liquid membrane to be used with the above.

The utility model relates to the technical field of water vapor filtering, in particular to a carbon dioxide absorber with a water vapor filtering function, and solves the problem that the use is influenced by relatively high moisture of flowing gas in the carbon dioxide absorber due to relatively poor filtering effect caused by relatively short gas flowing channel in the prior art. A carbon dioxide absorber with a water vapor filtering function comprises a filter cartridge, the side face of the filter cartridge is communicated with an air inlet pipe, the interior of the filter cartridge is fixedly connected with a partition plate, an air outlet pipe penetrates through the side face of the filter cartridge, the bottom of the air outlet pipe is communicated with a filtering mechanism, and the bottom of the filter cartridge is fixedly connected with a cover plate. According to the utility model, the channel path for gas circulation is increased, so that the cooling and filtering effects of moisture in the gas are better, and the carbon dioxide absorber can be normally used without being influenced by the moisture.

The invention discloses a programmable atmosphere carbon dioxide absorbent forced oxidative degradation test system and method, and the system comprises a gas supply and mixing module which is used for generating simulated flue gas with programmable components and humidity through a multi-path gas source and a mass flow controller; the constant-temperature and constant-pressure reaction module comprises a reaction kettle with heating, stirring and pressure and temperature monitoring functions; the isobaric sampling and re-pressing gas supply module is used for maintaining the system pressure and atmosphere stability through a buffer cavity and a re-pressing branch during sampling; and an integrated control module. The method comprises the following steps: preparing a system, setting parameters, generating a simulated atmosphere, establishing constant-temperature and constant-pressure reaction conditions, and carrying out isobaric sampling and automatic re-pressing compensation. By integrating programmable atmosphere control and a unique isobaric sampling and re-pressing structure, long-term and multi-frequency stable sampling in a simulated real flue gas environment is realized, so that high-fidelity and high-repeatability degradation test data is obtained.

The purpose of the present invention is to provide a carbon dioxide absorbent for efficiently absorbing carbon dioxide contained in seawater. The present invention relates to a novel polymer including a guanidino group or a cyclic guanidino group. The present invention also relates to a carbon dioxide absorbent for absorbing carbon dioxide contained in seawater, the carbon dioxide absorbent including the polymer.

The application provides a kind of carbon dioxide absorbent based on piperazine derivative and preparation method and application, it is related to carbon dioxide capture technical field, the absorbent is piperazine derivative as main absorbent, including not less than 19% by mass fraction N-(2-hydroxyethyl) piperazine and / or N,N'-dihydroxyethyl piperazine, not more than 17% piperazine, not more than 1% N-hydroxyethyl-N'-hydroxyethoxyethyl piperazine, not less than 59% water.The application also provides a kind of preparation method of the absorbent.The absorbent provided by the application has good carbon dioxide absorption effect, low foaming, high cycle load and low regeneration energy consumption and other advantages.

The present invention aims to provide a carbon dioxide absorbent that can efficiently absorb, fix, and simply separate and recover carbon dioxide in the air. The present invention relates to an atmospheric carbon dioxide absorbent consisting of an amine selected from the group consisting of m-xylylene diamine, benzylamine, phenethylamine, p-methoxybenzylamine, and p-trifluoromethylbenzylamine, and water, and having the amine content of 1 to 50 wt % with respect to the total amount. The present invention also relates to a method for generating carbon dioxide which uses the aforementioned carbon dioxide absorbent and is simple and superior in energy efficiency.

The present invention discloses a polyurethane structural adhesive with high initial strength and detachable property, its preparation method, and its use as a structural adhesive for battery units. The structural adhesive consists of component A and component B with a volume ratio of 1:1. Component A includes 20 parts of polymer polyol, 10 to 20 parts of castor oil-modified polyol, 0.01 to 1 part of coupling agent, 0.1 to 1 part of water, and 20 to 60 parts of carbon dioxide absorbent by weight. Component B includes 1 to 20 parts of isocyanate A and 10 to 40 parts of isocyanate-based prepolymer by weight. After complete curing, the structural adhesive can reach an initial tensile shear strength of more than 4 MPa, meeting the requirement of resisting vibration damage during transportation, and the structural strength drops to a stable value of 0.2 MPa to 0.5 MPa within a short time in the use environment, so that the strength can not only meet the static bonding of battery units but also have a relatively low strength to reduce the disassembly difficulty during maintenance.

According to the electron-rich aryl substituted thioester carbon dioxide absorbent, electron-rich aryl substituted thioester is introduced, so that the prepared carbon dioxide composite absorbent has high carbon dioxide absorption rate and high carbon dioxide desorption rate, and meanwhile, the carbon dioxide desorption temperature is reduced; the defects that a single ethanolamine absorbent is small in absorption capacity and difficult to desorb are overcome.

The present invention provides a process for removing carbon dioxide from a gas stream comprising carbon dioxide, the process comprising contacting the gas stream with an aqueous absorbent solution comprising (i) a non-volatile amine absorbent, (ii) a non-carbonate hygroscopic metal salt in an amount of at least 10% by weight of the aqueous absorbent solution, and (iii) water, thereby absorbing carbon dioxide from the gas stream into the aqueous absorbent solution to produce a carbon dioxide lean gas and a carbon dioxide rich absorbent composition.

The invention relates to caustic leached RHA absorbent materials obtained as a residue during alkaline silica production in hydrothermal process, and use of residue as CO2 absorbent material.

The invention relates to a mining self-rescuer intelligent management and control system which comprises an operation platform, a control panel and a waste absorbent feeding port, a carbon dioxide absorbent intelligent loading assembly, the control panel and the waste absorbent feeding port are sequentially installed on the upper portion of the operation platform, and a waste recycling bin is arranged in the position, under the waste absorbent feeding port, in the operation platform; according to the invention, the pressure state of the self-rescuer and the corresponding carbon dioxide absorbent filling date in the background data are read through the self-rescuer clamping table, so that the equipment can determine the maintenance item, and the maintenance steps are prompted through voice; the intelligent carbon dioxide absorbent loading assembly automatically weighs a corresponding number of carbon dioxide absorbents, the carbon dioxide absorbents are manually guided to be loaded into the self-rescuer, then compressed oxygen is provided by the oxygen pipeline connecting terminal, the oxygen is flushed into a compressed gas cylinder, background data and an electronic ledger are automatically updated, and the self-rescuer is started. Voice prompt can be sent out, the self-rescuer number and the self-rescuer state can be automatically read, and operation steps can be prompted according to the self-rescuer state.

The utility model discloses a carbon dioxide absorbent oxidative degradation analysis device, which belongs to the technical field of detection devices, and is characterized by comprising a base, a tank body is fixedly connected to the left side of the top of the base, a mixing assembly is fixedly connected to the inside of the tank body, and a detection assembly is fixedly connected to the right side of the top of the tank body; the mixing assembly comprises a storage pipe, and solves the problems that an existing analysis device is inconvenient to increase the contact area of a reagent and air, and in actual detection, due to the limitation of the device structure, the reagent and the air are inconvenient to drive to fully flow, so that the contact area of the air and the reagent in a tank is not good, and the air and the reagent cannot be fully mixed; the problems that in the prior art, a carbon dioxide absorbent and oxygen and other components in air are not fully subjected to an oxidation reaction, the oxidative degradation process of the absorbent in actual use is difficult to truly simulate, the analysis result is affected, and the practicability of the device is reduced are solved.