133results about How to "Large absorption capacity" patented technology

A method for producing a cross-linked polymer manifesting a high absorption capacity and having a small content of soluble component by a convenient and expeditious process with high productivity is provided. An absorbent resin such that disposable diapers and other products incorporating the absorbent resin manifest outstanding qualities and a method for the production of the absorbent resin are proposed. The cross-linked polymer according to this invention is produced by a method of polymerizing an aqueous polymerizable monomer solution containing a water-soluble ethylenically unsaturated monomer and a first cross-linking agent capable of forming a hydrogel polymer by polymerization, which method comprises the steps of performing the polymerization in a substantially static state from the time at which the polymerization is initiated till the time at which the whole polymerization system is gelated, subsequently giving the polymerization system a thorough shearing force thereby granulating the hydrogel polymer before the polymerization system has the temperature thereof elevated by the heat of polymerization to the highest level, and further continuing the polymerization.

The invention relates to a composite decarbonization solution for reclaiming the carbon dioxide in the exhaust gas, wherein the component and the mass percent of the composite are that: 20-60 percent of composite amines solution, wherein one or more fast reaction rate amines with a low concentration and one or more slow reaction rate amines with a high concentration are comprised; 5-10 percent of Polyxinolum; 1-5 percent of antioxidant; 1-5 percent of inhibitor; and the rest is water. The invention has the advantage of a large absorbing capability to CO2, a high degree of purification, a light causticity, a little consume of the solution and a lower recycling energy consumption. High concentration CO2 for gas injection oil-recovery can be obtained.

The invention discloses a reproducible wet flue gas desulfurization technique, which solves the problems of the prior art of high operation cost and high loss rate when absorbent is in use. The invention is characterized in that after going through a washing tower, flue gas containing gas SO< X > is then connected with the absorbent in a reverse flow in an absorption tower; the purified flue gas is discharged into the atmosphere; a portion of pregnant solution absorbent directly returns to the absorption tower for circular application, wherein SO2 of the flue gas is absorbed by the pregnant solution; a portion of air stripping is used circularly after a regeneration. The invention has the advantages that the energy consumption and operation cost of the technique are low, and loss of the absorbent is small.

The invention belongs to gas separation field, which proposes a method for eliminating carbon dioxide from gas with compound ammonia liquid. It uses a kind of compound ammonia liquid as the absorbent, the whole ammonia density in the absorbent accounts for 20%-60% according to the weight percentage. When the partial pressure of carbon dioxide in the gas is 0.1MPa-0.25Mpa, the absorbing content is large; the purification is high, and energy-saving.

The present invention relates to an absorbent article for body fluids aimed at utilizing an entire absorbent member efficiently and having a thinner form, a larger absorption capacity and longer wearability as a whole. The absorbent member 25 comprising a contraction material 27 which contracts itself on contacting urine passing through a liquid-permeable surface layer provided on the side facing to the body skin and an absorbent material for body fluids 26 which is practically united with the contraction material 27 is arranged on the upper side of a leak proof layer provided on the side farther from the body skin.

The invention discloses a high-efficiency composite desulphurization solvent and a system and method for removing acidic gas and organic sulfur. The high-efficiency composite desulphurization solvent comprises, by mass, 70-85% of compound amine, 10-20% of a desulfurization enhancer, 10-30% of a physical solvent, 0.01-0.1% of an antifoaming agent, 0.5-2% of a benzylamine anti-oxidant and 0.5-2% of a heterocyclic amine antiseptic. The high-efficiency composite desulphurization solvent has the advantages of large acidic gas load, low sulfur content of purified gas, stable solvent performances and no corrosion on equipment, and can remove most of H2S and a large part of organic mercaptan from mixed gas. The high-efficiency composite desulphurization solvent and the system and method can greatly reduce a gas purification cost and reduce total sulfur content of the purified gas. The high-efficiency composite desulphurization solvent and the system and method can be used for removing H2S, CO2 and organic mercaptan in natural gas, petroleum refinery gas and synthetic gas.

The invention discloses a renewable flue gas desulfuration agent and applications thereof, which aim at overcoming the defects that an adsorbent in the prior art is easily oxidized to generate heat stable salt, and thus the capability of the adsorbent in absorbing SO2 is lost, and the like. The desulfurization agent comprises the following compositions in percentage by weight: (A) 5-60% of diamine compounds containing ethoxyl or hydroxypropyl; (B) 2-40% of desorption auxiliaries; (C) 0.1-0.5% of an antioxidant; (D) 0.5-1% of a corrosion inhibitor; and (E) 5-90% of deionized water. The desulfurization agent can be used in the fields of coal-fired power plants, refinery enterprises, nonferrous metallurgy enterprises and the like, is low in energy consumption, capable of being recycled and free from secondary pollution, and heat stable salts are generated slowly.

Process for treatment of a hydrocarbon feedstock that comprises a hydrocarbon-containing liquid phase and hydrogen, in which the feedstock is separated under a pressure P1 into a liquid L1 and a gas G1, that is compressed and brought into contact with a portion of L1 under a pressure P2>2×P1 to recover a liquid L2 and a hydrogen-rich gas G2; L2 is fractionated to obtain a stabilized liquid L4a that is free of LPG and lighter products, a liquid stream of LPG, and a gas stream G4 that is recycled, and in which one of gas streams: recompressed G1 and G4 is in counter-current contact with an unstabilized liquid AL that is obtained from or extracted from L1 or L2, whereby this unstabilized liquid is supercooled by at least 10° C. below its bubble point at pressure P2.

For a transportation machine such as a railway vehicle, a space for a driver is secured while collision energy is absorbed at a time of collision with a large obstacle, and entry of a flying object into a driving cab is prevented by a rigid structure at a time of collision with the flying object. Windows 40, 40 are provided in a flying object barrier plate 50 provided at a tip end portion of a driving cab 25, and energy absorbing members 100, 100 are penetrated through the windows 40, 40 to be disposed in a form extending outward of the flying object barrier plate 50 from an inside of the driving cab 25. The energy absorbing members 100, 100 of a large absorbing capacity can be efficiently disposed by utilizing a space of the driving cab 25 provided in a vehicle body. A beam member of a crushable zone 11a including the flying object barrier plate 50 is firmly placed and can be connected to a survival zone 10.

The invention particularly relates to an amine salt solution absorbent and a method for recycling sulfur dioxide from industrial waste gas. The absorbent is prepared by virtue of the following steps: firstly, mixing piperazine and water and uniformly agitating, and adding ethylene oxide to react under an agitating state; secondly, taking a reaction product and boric acid to react to obtain an organic amine salt; finally, dissolving the organic amine salt into water to prepare an amine salt water solution to obtain the absorbent. An absorption method comprises the following steps: carrying out countercurrent contact on the absorbent and a gas flow containing sulfur dioxide gas so as to dissolve the sulfur dioxide into the absorbent to remove the sulfur dioxide; meanwhile, contacting an absorption solution absorbing the sulfur dioxide with steam to be regenerated, so as to realize cyclic utilization. The preparation method is simple, the reaction efficiency is high, few reaction by-products are obtained, the yield is high, the price of a solvent is low, the period is short and the production cost is low; the capacity of the prepared absorbent is large and the sulfur dioxide can be completely recycle; the absorbent can be cyclically utilized and the regeneration energy consumption is low.

The invention discloses a carbon dioxide solid amine adsorbent and a preparation method thereof. The adsorbent comprises a silicon dioxide hollow ball carrier with a large hole size (50nm-550nm) and linear poly-L-arginine (PLA) which is chemically bonded on the inner and outer surfaces of a hollow ball by an in situ polymerization manner. The specific preparation method comprises the following steps: (1) synthesizing the silicon dioxide hollow ball carrier by using tetraethoxysilane and polystyrene emulsion (PS); (2) carrying out amination on the surface of the hollow ball carrier with 3-aminopropyltrimethoxysilane; and (3) polymerizing PLA on the inner and outer surfaces of the hollow ball in situ by adopting the in situ polymerization manner. The adsorbent has the remarkable advantages of high adsorption-desorption speed, large adsorption capacity, good long-period stability and the like; the problems of corrosion and high energy consumption of a liquid ammonia adsorbent in current industry are solved; and the problems of the solid amine adsorbent that the long-period adsorptivity is poor and the adsorption capacity is low are also solved.

The invention provides a phase change absorbent for capturing CO2 in the waste gas. The phase change absorbent for capturing the CO2 in the waste gas comprises an alkylol amine absorbent, an amine absorbent, a nanoparticle, a corrosion inhibitor, an antioxidant, a defoamer and water, the mass ratio of the alkylol amine absorbent to the amine absorbent, to nanoparticles to the corrosion inhibitor to the antioxidant to the defoamer to the water in the phase change absorbent for capturing CO2 in the waste gas is (15%-20%):(5%-10%):(0.01%-0.1%):(0.01%-0.2%):(0.01%-0.2%):(0.01%-0.1%):(70%-80%). Thephase change absorbent for capturing CO2 in the waste gas increases the absorptive capacity of CO2, increases the capturing rate of CO2, reduces the corrosion rate of equipment, improves the self-stability, reduces the regeneration temperature, reduces the energy consumption of regeneration, and improves the degradation effect.

The invention discloses a novel high-efficient compound decarbonization solvent which comprises N-methyldiethanolamine and an active agent. The active agent is a mixture which consists of at least two of N-hydroxyethyl morpholine, 2-amino-2-methyl-1-propanol and piperazine, wherein the weight ratio of the N-hydroxyethyl morpholine is 80 to 90 percent; the weight ratio of the active agent is 10 to 20 percent and a defoaming agent is also added into the compound decarbonization solvent. The novel high-efficient compound decarbonization solvent has the advantages of high carbon dioxide absorption capacity, high purification degree, low regeneration energy consumption, and no foams after long-term use of the decarbonization solvent.

The invention pertains to processes for separating gases, acid gas, hydrocarbons, air gases, or combinations thereof. The processes may employ using a liquid phase cloud point with or without subsequent liquid-liquid separation. In some embodiments membranes can be employed with reverse osmosis to regenerate a solvent and / or an antisolvent. In some embodiments thermal switching phase changes may be employed during absorption or desorption to facilitate separation.

The invention discloses an absorbent for circularly absorbing sulfur dioxide gas in tail gas of natural gas and an application of the absorbent. The absorbent comprises the following components in percentage by mass: 30-60wt% of cyclic tertiary amine compounds, 5-10wt% of a desulfurization fortifier, 10-30wt% of a latent solvent, 0.5-3wt% of an activating agent, 1-2wt% of an antioxidant, 0.5-2wt% of a corrosion inhibitor and the balance of water. The application refers to applying the absorbent to removal of the sulfur dioxide gas in the tail gas of the natural gas at an absorption temperature of 20-70 DEG C. According to the invention, by utilizing the structure characteristics of the cyclic tertiary amine compounds which are high in sulfur dioxide absorption capacity and low in desorption energy consumption, and adding corresponding auxiliary agents at the same time, the absorption of absorption liquid to sulfur dioxide has high efficiency and specificity; and the absorbent can selectively remove SO2 from the tail gas of the natural gas, so as to greatly reduce the gas purification cost, and facilitate follow-up utilization of recycled acid gas.

The invention relates to a decarburization solvent, which comprises n-methyldiethanolamine, defoamer and activator; wherein, the content of the n-methyldiethanolamine is 80 to 90wt% in the decarburization solvent; the content of the defoamer is 0.1 to 0.5wt% in the decarburization solvent; the content of the activator is 10 to 20wt% in the decarburization solvent. The decarburization solvent has the advantages of being applicable to the removing of carbon dioxide in the mixed gas of syngas, city gas or natural gas, removing the sulphide, large absorption capacity, high degree of purification, and low regeneration energy consumption.

A heat-sensitive recording sheet is formed as a laminate and includes at least a first and a second web material. The first web material has a substrate of paper with a watermark and the second web material has at least a substrate and a heat-sensitive recording layer.

The invention specifically relates to a high-selectivity compound desulfurizer and a preparation method thereof, belonging to the field of gas purification techniques. The high-selectivity compound desulfurizer comprises the following raw materials by weight: 60-80 parts of N-methyldiethanolamine, 1-3 parts of an eutectic solvent, 10-30 parts of sterically hindered amine, 0.5-1.5 parts of a non-silicon defoaming agent and 4-8 parts of an antioxidant. The compound desulfurizer provided by the invention overcomes the shortcomings of current refinery gas desulfurization processes, and is simple in process and applicable to desulfurization of most refinery acidic gases. According to the invention, N-methyldiethanolamine, the eutectic solvent and sterically hindered amine are compounded, and the supplementation effect and synergism of the above three components enhance the respective desulfurization effect of the components; and the high-selectivity compound desulfurizer has high purification depth, large absorption capacity, low energy consumption for regeneration, environment friendliness and other advantages.

The invention relates to a reproducible polytertiaryamine sulfur dioxide absorbent and a preparation method thereof. The absorbent comprises the following components: (1) polytertiaryamine having a mass concentration in the range from 1% to 80%, which is taken as the major component of the absorbent, wherein the polytertiaryamine exists in a solution in the form of unionized polytertiaryamine, partially ionized quaternary ammonium salt and completely ionized quaternary ammonium salt due to addition of an acid difficult to volatilize; (2) a phenol or quinone material having a mass concentration in the range from 0.01% to 1%, which is used as an antioxidant of the absorbent; (3) 1-50wt% of acid difficult to volatilize, which is used as the cosolvent and stabilizer for the polytertiaryamine; (4) 0.1-10wt% of monoalcohol amine, which is used as an activator of the absorbent; (5) 10-90wt% of water. The absorbent absorbs sulfur dioxide in mixed gases at a low temperature and releases the absorbed sulfur dioxide gas at a high temperature to generate a sulfur dioxide by-product having a dry basis concentration greater than 99%; the absorbent can be recovered and reused.

The invention discloses a nitrogen azole metal salt absorbent solution for acid gases and application thereof. The nitrogen azole metal salt absorbent solution comprises, by weight percent, 1-50% of nitrogen azole metal salt and the balance polarity good solvent. The nitrogen azole metal salt is one or optional mixture of imidazolium salt, triazole salt, and tetrazole salt. The polarity good solvent is one of or optional mixture of polyethylene glycol, polypropylene glycol, water, dimethyl sulfoxide, sulfolane, ethylene carbonate, propylene carbonate, glycerol, and polyglycerol. The invention further discloses an application method of the nitrogen azole metal salt absorbent solution for the acid gases. The nitrogen azole metal salt absorbent solution is mainly used for absorbing and separating the acid gases such as CO2, SO2 and H2S, and has the advantages of low cost, high absorption amount, fast absorption / desorption, low desorption energy consumption, high selectivity, reusability and the like.

The invention discloses a carbon dioxide solid absorbent. The carbon dioxide solid absorbent comprises a composite carrier consisting of activated carbon and zirconium dioxide; the surface of the composite carrier is loaded with an ion liquid polymer, and the surface of the activated carbon is loaded with zirconium dioxide. The preparation method of the carbon dioxide solid absorbent comprises the following steps: preparing zirconium dioxide gel by taking zirconium oxychloride as a precursor and taking H2O2 as a hydrolysis promotion agent, adding activated carbon in the reaction process to prepare a composite carrier; dissolving an ionic liquid polymer by absolute ethyl alcohol so as to prepare an ionic liquid polymer solution; immersing the composite carrier into the ion liquid polymer solution, immersing at room temperature, filtering, drying the obtained solid to obtain solid particles, and crushing the particles. The carbon dioxide solid absorbent provided by the invention has the advantages of low regeneration temperature, high regeneration rate, no pollution, good cycle performance, low equipment corrosion, high absorption capacity and economic cost reduction, is used for capturing carbon dioxide in various fields, and is especially used for capturing coal combusted flue gas carbon dioxide.

The invention relates to a mixed solvent for trapping carbon dioxide, and belongs to the technical field of separating gas by an adsorption effect. The mixed solvent for trapping the carbon dioxide is prepared by compounding and mixing organic alkali and alcohol amine ionic liquid, wherein the molar ratio of the organic alkali to the alcohol amine ionic liquid is (1: 1)-(3: 1). By compounding the organic alkali with high boiling point and the alcohol amine ionic liquid, the mixed solvent improves the absorptive capacity for the carbon dioxide gas, and reduces the consumption of the solvent in a using process; and the mixed solvent has the advantages of being simple to prepare, high in absorptive capacity and capable of being recycled.

The invention belongs to the field of carbon dioxide capture and separation, and in particular provides application of tri-(2-aminoethyl) amine as a carbon dioxide absorbent. Compared with the traditional absorption solvent, the performance of absorbing CO2 of the tri-(2-aminoethyl) amine provided by the invention is superior to that of the traditional absorption solvent (such as mono ethanol amine), and the tri-(2-aminoethyl) amine has the advantages of larger absorption capacity and quicker absorption speed.

The invention provides a device and a method for continuously determining total organic carbon (TOC) concentration of sea water and high-salinity waste water. An ion trap which is large in absorption volume, long in effect time, convenient in part replacement and strong in recycling for chlorine (C1) is added into the device before detection of carbon dioxide (CO2), so that authenticity of a test result is ensured.

The invention pertains to processes for separating water from air. The processes may employ using an LCST solution with or without subsequent reverse osmosis, nanofiltration, or ultrafiltration.

The invention discloses an alcohol amine type ion liquor-containing compound absorbent capable of capturing carbon dioxide. The alcohol amine type ion liquor-containing compound absorbent is characterized by comprising an absorption component, a corrosion inhibitor, an antioxidant and solvent, wherein the absorption component consists of N-Methyldiethanolamine and ionic liquid (TETAH)<+>(BF4)<->. The invention provides a compound absorbent which is high-efficiency, good in stability, easy to desorb, and low in regeneration energy consumption and can capture carbon dioxide. Organic amine and ionic liquid are mixed, the organic alcamines has the characteristics of being high in absorption rate and large in absorption capacity and the ionic liquid has the properties of low steam pressure and good stability and the like, thus supplementing each other so as to improve the processing capacity of carbon dioxide.

The invention belongs to the environment protection field and discloses a method and a device for treating pollutant and dust in gas. The method is electrochemical means, solution-electrode is adopted as reaction system, gas is guided into the solution-electrode reaction system, and electrolysis reaction is carried out to degrade pollutant. The adopted electrode is a three-dimensional foam electrode with openings, and foam filler is filled between anode and cathode. The invention also provides a device applicable to the method, liquid cycle and effective distribution are adopted, so that gas and liquid can be effectively distributed and mixed on the surface of the three-dimensional electrode, effective area of reaction is greatly increased, and gas purification efficiency is improved.

The invention discloses a solvent for capturing CO2 and a preparation method of the solvent for capturing the CO2 and belongs to the technical field of environmental protection and carbon emission reduction. The molecular weight, the viscosity and the density of the solvent are 190-370, 0.9-6 mPa s and 0.9-1.2 g / cm<3> respectively. The preparation method includes enabling ester compounds and aliphatic diol compounds serving as raw materials to react for 10 seconds to 10 hours under catalysis of catalysts under the pressure of 10-1000 kPa and at the temperature of 50-300 DEG C so as to obtain the solvent for capturing the CO2. The solvent for capturing the CO2 is large in absorptive capacity, and 50-100 g of CO2 can be dissolved in per g of solvent. The solvent is simple and feasible in synthetic method and has a promising application prospect in the technical field of environmental protection and carbon emission reduction.