224 results about "Carbon dioxide absorber" patented technology

The invention discloses an electric control type constant oxygen partial pressure closed diving respirator system which comprises an air supply subsystem, a breathing circulation subsystem and an electric control subsystem. The air supply subsystem comprises an oxygen supply system and a diluted gas supply system, the breathing circulation subsystem comprises a breathing circulation pipeline and a carbon dioxide absorbent tank connected in the breathing circulation pipeline in series, and the electric control subsystem comprises an oxygen supplementing electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline. The gas sensor is used for collecting gas parameters in a breathing circulation pipeline, and the display device, the control panel and the power source are connected with the oxygen supplementing electromagnetic valve and the gas sensor. The oxygen supply can be accurately controlled, the adjustability is high, the response is quick, the stability is good, meanwhile, information can be detected and displayed in real time, and the use safety and comfort are improved.

Provided is a method for collecting carbon dioxide which includes a step in which air is brought into contact with spray water and thereafter brought into contact with a carbon dioxide absorbent to make the carbon dioxide absorbent absorb the carbon dioxide contained in the air, the method being characterized in that the spray water has an acid consumption (pH 4.8) of 20 mgCaCO3 / L or greater. In cases when the spray water has an acid consumption (pH 4.8) less than 20 mgCaCO3 / L, a basic substance is added to the spray water so that the spray water comes to have an acid consumption (pH 4.8) of 20 mgCaCO3 / L or greater.

The invention provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are achieved.

The invention belongs to the technical field of carbon dioxide capture, and particularly discloses a tubular parallel flow carbon dioxide absorption and desorption continuous operation system and method. The method is used for solving the problems of large equipment size, high operation cost and high energy consumption of a traditional countercurrent packed tower chemical absorption method. The operating system comprises a low-partial-pressure carbon dioxide inlet, a carbon dioxide ejector, an absorption reactor, a first gas-liquid separator, a first heat exchanger, a second heat exchanger, a pregnant solution pump, a desorption reactor, a heater, a pressure controller, a second gas-liquid separator, a third gas-liquid separator, an absorbent storage tank and a barren solution pump. Continuous operation is adopted in the whole process, efficient cyclic utilization of the carbon dioxide absorbent is achieved, the number and occupied area of carbon capture equipment are effectively reduced, the labor cost and operation risk are reduced, the carbon capture efficiency is improved, and the transformation and maintenance cost of existing equipment is reduced; therefore, efficient, low-energy-consumption and green parallel flow continuous operation of carbon dioxide absorption and desorption is realized.

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 utility model discloses a carbon dioxide absorber device with an artificial nose filter, which belongs to the technical field of medical instruments and comprises a shell, an air inlet is arranged at the top of one side of the shell, an air outlet is arranged on one side of the shell far away from the air inlet and opposite to the air inlet, and an artificial nose is mounted on the air outlet. A honeycomb-shaped division bar is arranged at the inner bottom of the shell, and a gap is reserved between the lower portion of the honeycomb-shaped division bar and the inner bottom of the shell. The artificial nose is arranged at the air outlet of the shell, so that the heat and the humidity of air exhaled by a patient can be kept, bacteria and viruses in the inhaled air are isolated, cross infection is effectively avoided, and the use safety and the functionality of the device are improved; the honeycomb-shaped division bars and the first sponge mat are arranged at the inner bottom of the shell, the inner space of the shell can be divided, the absorption area is formed at the top of the first sponge mat, the water vapor collection area is formed at the bottom of the first sponge mat, calcium lime can be prevented from being soaked, and the absorption effect is ensured.

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.

Provided are: a carbon dioxide absorbent containing an amine compound (A) represented by general formula (1); a method for recovering carbon dioxide using the carbon dioxide absorbent; and an apparatus for separating and recovering carbon dioxide.　Formula (1): H2N-(CH2)m-X-(CH2)n-NHR1 (In formula (1), X is a phenylene group or a cyclohexylene group, and R1 is a 2-12 C hydrocarbon group which may have a hydroxy group, and m and n are each independently a number from 1 to 6.)

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.

The utility model discloses an isolated type circulating respiratory protection device. The protection device comprises a protection cover, a breathing apparatus arranged in the protection cover, an air bag arranged outside the protection cover and communicated with the breathing apparatus, a carbon dioxide absorbent bin arranged between the air bag and the breathing apparatus, and an oxygen supply device arranged outside the protection cover and communicated with the air bag. The protective cover is a hollow protective cover capable of at least containing the head, an opening for at least the head to stretch in is formed in the protective cover, and a tightening device capable of tightening the opening is arranged at the opening. The oxygen supply device comprises an oxygen bottle and a trigger switch for controlling the oxygen bottle to supply air into the air bag.

The invention relates to the field of new energy batteries, in particular to a positive pole piece, a preparation method thereof and a battery, the positive pole piece comprises a current collector, a first positive active material layer arranged on the surface of the current collector, and a second positive active material layer arranged on the surface of one side, far away from the current collector, of the first positive active material layer; wherein the first positive electrode active material layer comprises a first positive electrode active material and an acidic additive, and the second positive electrode active material layer comprises a second positive electrode active material and a carbon dioxide absorbent; the first positive electrode active material includes a layered oxide, and the second positive electrode active material includes a polyanionic compound. According to the positive pole piece disclosed by the invention, battery cell bulging caused by more produced gas can be avoided, and the cycle performance of the battery is favorably improved.

This cement composition for fixing carbon dioxide contains a cement composition and a carbon dioxide absorption liquid containing a carbon dioxide absorbent. This cement hardened body for fixing carbon dioxide includes a cement hardened body and a carbonate carried on the cement hardened body. This method for fixing carbon dioxide has: a step for kneading a carbon dioxide absorption liquid containing a carbon dioxide absorbent into a cement composition; a step for hardening the cement composition containing the carbon dioxide absorbent to obtain a cement hardened body for fixing carbon dioxide; and a step for bringing the atmosphere into contact with the cement hardened body for fixing carbon dioxide, and fixing the carbon dioxide contained in the atmosphere to the cement hardened body for fixing carbon dioxide.

The invention relates to a method for using a choline eutectic solvent as a carbon dioxide absorbent. A choline eutectic solvent is used in the method. Wherein the choline eutectic solvent is prepared by mixing choline chloride (ChCl) and ethanolamine (MEA) according to a molar ratio of 1: 5. Placing the round-bottom flask filled with ChCl and MEA in a constant-temperature magnetic stirring oil bath pan, and heating and stirring for more than 3 hours at the temperature of 100 DEG C; and after a uniform and transparent solution is formed in the flask, taking out the solution from the oil bath pan, and standing to room temperature. Transferring into a reagent bottle, and pasting a label for later use. The choline deep-eutectic solvent is simple in preparation method and low in toxicity, and is an efficient carbon dioxide absorbent.

The utility model discloses an isolation type respiratory protection device which comprises an inner-layer cover and an outer-layer cover arranged outside the inner-layer cover in a sealing and covering mode, an interlayer between the inner-layer cover and the outer-layer cover forms an air storage cavity, and a carbon dioxide absorbent box is arranged on the inner-layer cover. The carbon dioxide absorbent box is communicated with the inner cavity of the inner-layer cover and the gas storage cavity, the inner-layer cover and the outer-layer cover are provided with openings through which part or all of the body can enter the inner-layer cover, and the openings are provided with sealing devices capable of sealing the openings. A user builds isolated breathing circulation through logic circulation of a gas circuit between the inner-layer cover and the gas storage cavity, it can be guaranteed that the user does not breathe outside gas any more within a certain time, and breathing protection guarantee is provided for escape of the user.

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 invention discloses a carbon dioxide absorbent and an absorption and regeneration method thereof. The absorbent comprises the following components in parts by weight: 15-40 parts of tertiary amine, 15-70 parts of polyamine, 1-20 parts of sterically hindered amine, 1-20 parts of an activating agent and 1-5 parts of amino-containing organic acid. The carbon dioxide absorbent provided by the invention has the characteristics of low desorption energy consumption, rapid separation and rapid regeneration, and the regeneration process is simple and easy to popularize. The efficient gas-liquid mass transfer equipment is used for achieving the heat and mass coordinated transfer process in the gas-liquid reaction and separation process, the mass transfer coefficient of carbon dioxide molecules on a solvent / water vapor interface is increased, the carbon dioxide separation efficiency is indirectly improved, and the characteristic that the liquid film carbon dioxide molecule concentration is high at the regeneration temperature of a low-energy-consumption solvent is coupled. The quantity of solvent entrained by the carbon dioxide generated by the invention is less, and the loss of the solvent in the cooling separation process is effectively reduced.

The invention belongs to the technical field of carbon dioxide absorbents, and particularly relates to a liquid-liquid two-phase carbon dioxide absorbent as well as a preparation method and application thereof. The liquid-liquid two-phase carbon dioxide absorbent provided by the invention comprises micromolecular monoamine, a tertiary amine phase-splitting agent, an antioxidant, a water-soluble organic solvent, water and the like, the micromolecular monoamine in the composition is responsible for chemical reaction with carbon dioxide, and the tertiary amine phase-splitting agent can promote phase separation and reaction rate; meanwhile, due to the added antioxidant, the circulation capacity is improved, in addition, the use of water is reduced, and the latent heat is reduced, so that the carbon dioxide absorbent provided by the invention has excellent absorption rate, absorption capacity and circulation capacity, and meanwhile, the energy consumption can be reduced, and the viscosity is low; therefore, the technical problem of low performance of the carbon dioxide absorbent in the prior art is solved.

The present invention discloses a solid-liquid phase change carbon dioxide absorbent with a controllable phase change time node and its application. This non-aqueous solid-liquid phase change absorbent is composed of 2-(2-aminoethylamino)ethanol (AEEA), 2-amino-2-methyl-1-propanol (AMP), and N-methylpyrrolidone (NMP). Among them, AEEA is used as an activator to adjust the solid phase generation time, avoiding the precipitation of products at low CO2 loads, which may cause equipment blockage; AMP is used as the main absorbent reactant to ensure the high absorption capacity and regeneration performance of the absorbent; NMP with a high boiling point and low vapor pressure is used as a solvent to ensure the use stability of the absorbent. After absorbing CO2, this absorbent can undergo controllable solid-liquid phase separation, with CO2 enriched in the solid phase. Through two-phase separation, only the CO2 solid phase needs to be used for regeneration, thus effectively reducing the regeneration energy consumption. In summary, the high-efficiency non-aqueous solid-liquid phase change CO2 absorbent of this application has the characteristic of a controllable phase change time node, can reduce the risk of equipment blockage, and has broad application prospects.

1. The name of the product of this design: Carbon dioxide absorber (T3). 2. Purpose of the product with this design: The product with this design is used for carbon dioxide absorption. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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 special carbon dioxide adsorption machine and relates to the field of carbon dioxide. The special carbon dioxide adsorption machine comprises an adsorption machine shell, a moving unit and a rotating unit are arranged in a charging box, and the rotating unit comprises a rotating rod and is used for driving stirring fan blades to rotate. According to the special carbon dioxide adsorption machine, under the rotation of a reciprocating screw rod, a moving seat reciprocates along the peripheral wall of the reciprocating screw rod to drive a stirring fan blade to reciprocate in a charging box, and under the rotation of a rotating rod, a limiting seat is driven to rotate, so that the stirring fan blade rotates on the outer wall of the moving seat and moves in the charging box along with the moving seat; the carbon dioxide absorbent in the charging box is turned back and forth, so that the carbon dioxide absorbent is uniformly stirred, and subsequent absorption of carbon dioxide is facilitated.

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.)