543results about How to "Improve the degree of purification" patented technology

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 relates to a preparation method for a multi-component net-shaped nanofiber membrane. The preparation method includes the detailed steps that step1, mixing and beating are performed on meta-position aramid fibers, halogen salt and organic solvent by the mass ratio of 1:0.004-0.4:2.996-18.6, and a meta-position aramid fiber solution is prepared through mixing; step2, functionality high-molecular polymers and the solvent are mixed by the mass ratio of 1:5.4-98.99, then nano-particles are added, and heating and mixing are performed to prepare a functionality high-molecular solution, wherein the mass fraction of the nano-particles in the solution is 0.01-5%; step3, the meta-position aramid fiber solution obtained in the step1 and the functionality high-molecular solution obtained in the step2 are mixed by the mass ratio of 1:0.05-0.5 in a dripping mode, and then ultrasonic treatment is performed to obtain a spinning solution; step4, under the conditions of 20 DEG C-30 DEG C indoor temperature and 20-70% relative humidity, the spinning solution is used for electrostatic spinning, and finally the multi-component net-shaped nanofiber membrane with a 5nm-20nm net-shaped nanofiber diameter and reaches over 95% in net-shaped structure coverage rate is obtained. The preparation technology is simple and low in cost, tensile strength of material reaches 100MPa-2000MPa, and the functionality advantage is remarkable.

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 invention discloses a front-end combined purification process used to produce liquefied natural gas from mixed gas richly containing methane, which comprises four unit parts: acid gas removal, drying and dehydration, heavy hydrocarbon removal and demercuration. The mixed gas firstly undergoes a purification treatment through composite amine solution, CO2, H2S and HCN acid gases in the mixed gas are removed to the concentration less than or equal to 20ppm; the moisture in the gas is removed to a dew point at normal pressure less than or equal to minus 70 DEG C through isopiestic drying and dehydration treatment, then heavy hydrocarbon components above C5 are removed to the concentration less than or equal to 10ppm through temperature-changing pressure-changing absorption and purification treatment; finally the mercury content is removed to the value less than or equal to 0.001mu g/Nm<3> through the demercuration of demercuration adsorbent. The process has better purification effect than the conventional process route, improves the utilization rate of the raw materials and decreases the energy consumption during the purification; and the operation indexes of the units are easier to control.

The invention relates to the fields of environment friendliness and renewable energy source recycle. A method for separating and producing methane and carbon dioxide from marsh gas, which is realized through five steps as follows: pretreatment, methane separation, rich liquid flash vaporization, carbon dioxide recycle and adsorbent regeneration. The volume ratio of the separated methane is up to over 96%, and the volume ratio of the carbon dioxide is up to over 98%. The invention has the characters tics of simple process, low energy consumption, nontoxicity, high purity and safety process. Byusing the method, not only is low-carbon circular flow of economy realized, but also pollution to the environment is prevented.

The invention provides a bi-power combined type air purifier. The air entering from an air suction inlet is purified deeply by entering a specially made composite particle filter screen after purified by a multilayer filter screen, then enters the bottom of a liquid chemical water tank capable of thoroughly decomposing residual harmful substances such as formaldehyde and passes an air wet-balance filter screen to be purified by natural negative ions under irradiation of a crystal gypsum lamp, and the air is deeply purified again by the specially made composite particle filter screen after passing the multilayer filter screen. The bi-power combined type air purifier overcomes the defect that a conventional air purifier cannot thoroughly purify poisonous components in the air in large area without dead corners by using the multilayer filter screen and a single activated carbon screen to adsorb air dust and harmful substances around the purifier only. The bi-power combined type air purifier integrates functions of dust adsorption, air purification, sterilization, decomposition and elimination of harmful peculiar smell such as formaldehyde, air humidification and natural air purification, and air purification degree is twice improved as compared with that of conventional products.

The invention discloses a purification process for removing sulphur and carbon dioxide in gas by using a two-step method. The purification method comprises six steps as follows: the crude desulphurization of low-pressure high-sulphur gas, desulphurization of high-pressure gas, CO2 removal, the regeneration of decarburization solution, the regeneration of desulfurization solution and H2S concentration, and heat regenerating system. The purification process has the advantages of low energy consumption, low operation strength, simple process and high purification.

The invention discloses an air purifying agent comprising the following components in percentage by weight: 57-75% of calcium sulphate, 9.5-21% of cobalt chloride and 14-26% of activated carbon. The preparation of the air purifying agent comprises the following steps: after dyeing smashed calcium sulphate by the cobalt chloride, baking the dyed calcium sulphate at high temperature, and cooling to room temperature; baking the activated carbon at high temperature, and then cooling to the room temperature; and finally, mixing the two resultants to obtain the air purifying agent. The air purifying agent permits a high degree of air purification by removing impurities and steam in air in the air and can satisfy the requirements of cleanness and dryness on carrier air in the detecting and checking process of precise ingredients.

The invention relates to the technical field of temperature regulation equipment, in particular to a filter screen dedusting mechanism and an air-conditioner. The filter screen dedusting mechanism comprises a rolling device and an unrolling device which are used for rolling up and unrolling a filter screen respectively, wherein a dedusting portion is arranged on the rolling device, and in the process of rolling up and/or unrolling the filter screen, dust on the filter screen is cleaned off by the dedusting portion. Meanwhile, the invention further provides the air-conditioner adopting the filter screen dedusting mechanism. The filter screen is rolled up and unrolled through the rolling device and the unrolling device, and in the process of rolling up and/or unrolling the filter screen, dust on the filter screen is cleaned off by the dedusting portion. Therefore, the dust on the filter screen can be cleaned off automatically, the purification degree of air out of the air-conditioner is raised, and the quality of the air out of the air-conditioner is improved.

The invention relates to a method for removing hydrogen sulfide from gas by using suspension of ferric oxide powder. In the method, the hydrogen sulfide is removed from the gas by using the suspension of ferric oxide powder, and the method comprises the following steps of: mixing the ferric oxide powder with particle diameter of between 0.01 and 300 microns and water to form the suspension of ferric oxide powder for desulfurization; controlling the weight percentage of the ferric oxide in the suspension within the range from 0.5 to 60 percent; conveying the suspension of ferric oxide powder into a desulfurizing tower for circular sprinkling; fully mixing sulfur-containing gas and the suspension of ferric oxide powder in the desulfurizing tower and discharging the gas after desulfurization from the top of the desulfurizing tower; and allowing the suspension of ferric oxide powder which absorbs the sulfur to flow out of the desulfurizing tower and recycling the suspension after regenerating. The method has the advantages of good desulfurization effect, low pollution and small investment.

In cleaning engine exhaust gas, a high cleaning degree can be achieved by supplying at least a part of the finely dispersed cleaning liquid to be supplied to the exhaust gas to an exhaust gas total flow not yet split into partial flows. In said process, the exhaust gas is first brought into contact with a finely dispersed cleaning liquid, and the volume flow, formed from the exhaust gas and the finely dispersed cleaning liquid, subsequently has to pass a bath of cleaning liquid provided in a container (1), said bath being divided into a lower and an upper compartment (19, 20) by a gas- and liquid-permeable baffle element (18), wherein the volume flow, formed by exhaust gas and finely dispersed cleaning liquid, is introduced into the area of the cleaning liquid bath located underneath the baffle element (18), and from here,; runs through the area of the cleaning liquid bath located above the baffle element (18).

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.

The invention discloses a normal temperature ferric oxide desulfurizing agent and its application in the field of desulfurizing agent and its application which adopts desulfurizing agent prepared by the component of ketonic ferric oxide, auxiliary and plasticizer. It resolves the current problem.

The invention discloses a porous oil absorption material and a preparation and regeneration method thereof. The porous oil absorption material is a porous ceramic material uniform in pore distribution and with the pore diameter distribution range of 0.1-100 micrometers and above 40% of porosity, the porous oil absorption material is prepared from Al2O3 and SiO2, surface activation treatment is conducted on the porous oil absorption material so as to improve the surface hydrophilicity of the material, and the porous oil absorption material is soaked with modified liquid to obtain super-strong oil absorption capacity. The porous oil absorption material having an oil contamination removing function has the advantages of being simple in modification process, low in modification cost, high in oil absorption speed, large in oil absorption amount, high in water body purification degree and convenient to regenerate and the like.

The invention discloses modified montmorillonite and a preparation method as well as an application thereof in water resource purification. The preparation method comprises the following steps: S1, adding montmorillonite into a first solution so as to form a suspension to be pillared; and S2, adding a second solution into the suspension to be pillared, reacting in a stirring manner and filtering so as to obtain the modified montmorillonite, wherein the first solution is a sodium hydroxide aqueous solution and the second solution is a ferric chloride aqueous solution; or the first solution is the ferric chloride aqueous solution and the second solution is the sodium hydroxide aqueous solution. According to the method, the montmorillonite is modified in the manner that a ferric hydroxide pillaring agent is added between the crystal layers of the montmorillonite. When the modified montmorillonite is applied to sewage treatment, the ferric hydroxide pillaring agent can be used for adsorbing metal ions which are provided with negative charges and exist in the sewage in the form of complex anions. Thus, the problem that the montmorillonite only can be used for adsorbing metal cations is solved. As a result, the purification degree of the sewage is improved.

The invention provides a device system for continuously trapping CO2 in flue gas of a cement kiln through a hydrate method. The device system comprises a tail exhaust fan, an electric three-way air valve, a chimney, a flue gas purifying device, a cooler, a flue gas compressor, a CO2 absorbing tower-regeneration tower unit, a cold energy recovery device, a waste heat energy storage device, a dehydration dryer, a CO2 cooler, a CO2 compressor and a liquefied CO2 storage tank. The CO2 absorbing tower-regeneration tower unit comprises a CO2 absorption tower, a poor/rich fluid heat exchanger device and a CO2 regeneration tower, and the above parts are orderly connected. The device system is based on a cement production line process and process equipment, utilizes cement production waste heat as heat exchange energy, utilizes a hydrate accelerator to continuously capture the CO2 in flue gas of the cement kiln, can purify the flue gas, and realizes high efficiency, low self-consumption, low investment and low operating cost.

The invention provides a preparation method of a Salvia miltiorrhiza soft capsule, comprising the following steps of: completely mixing Salvia miltiorrhiza extract with glycerine and polyethylene glycol 400 so that liposoluble constituents such as tanshinone II A are dissolved in a liquid substrate so as to achieve certain solubilization and improve the biological availability of liposoluble constituents of Salvia miltiorrhiza. In the preparation process of the Salvia miltiorrhiza soft capsule, a method for preparing Salvia miltiorrhiza water-soluble component extract is provided, a macroporous resin separation technology is adopted, and ethanol solution is concentrated, atomized and dried after elution; in the obtained extract, the total salvianolic acid compounds account for more than 60% of total solid, wherein the content of salvianolic acid compound danshinolic acid B is between 45% and 60%, and the content of danshensu is controlled between 10% and 20%. The content of danshensu is controlled while the yield of salvianolic acids is improved so that the proportion of the main active ingredient danshinolic acid B is obviously improved. The preparation method is safe and efficient, low-toxic and environmentally-friendly, can satisfy the requirement of industrial production, and has wide and practical application value.