49 results about "Carbonic Anhydride" patented technology

The invention provides a method and a device for collecting carbon dioxide in smoke gas of a coal-fired power plant. The device consists of a smoke gas pretreatment system, absorption towers, a regeneration tower, an exhaust scrubbing system, a solution heating recoverer, a product gas processing system (comprising a condenser, a gas-liquid separator and a compressor). The device is integrated with the prior smoke gas purification device of the coal-fired power plant, and is provided with a high-efficiency whirlcone and a chemical absorption system, so that mass carbon dioxide gas exhausted from a coal-fired boiler can be collected, and the emission of greenhouse gas can be reduced; the special arrangement of double absorption towers ensures more flexible operation of a collecting system, and improves the operational reliability; an absorption solution reclaiming process reduces the consumption of the solution; the arrangement of a lean-rich solution heat exchanger and a product gas rich solution heat exchanger reduces the energy consumption of the collecting system; and the steam consumption can be effectively reduced by adopting a built-in solution boiling unit.

The invention relates to an electrochemical reducing method of carbon dioxide in ionic liquid and an electrochemical reducing device. The method comprises following steps: injecting ionic liquid in a cathode chamber in the electrochemical reducing device, inputting the carbon dioxide, inputting hydrogen on the inner side of an anode bipolar plate, oxidizing the hydrogen on an anode, generating hydrogen ions, enabling H+ to traverse through proton exchange membrane to reach a cathode, transmitting electrons to the cathode through an external circuit, enabling the carbon dioxide and the H+ to generate electrochemical reduction reaction on the cathode, generating organic compound such as carbinol and the like, and obtaining the carbinol, water and other secondary reaction products through distilling the organic compound which is generated. The ionic liquid of the invention has very high electrical conductivity and ion mobility, the ionic liquid is suitable to be used as a media system of electrochemical reaction, simultaneously, the ionic liquid has the advantages of low volatility and small toxicity, competitive reaction of the H+ is inhibited, since the solubility of the carbon dioxide in the ionic liquid is very high, the efficiency of the electrochemical reduction reaction of the carbon dioxide is also comparatively high, and the electrochemical method of the invention utilizes CO2 to generate the organic compounds such as the carbinol and the like (by products are aminic acid, formaldehyde and the like), which realizes the resource utilization of the CO2.

The invention discloses a method using supercritical carbon dioxide to perform bee pollen broken-face. Bee pollen is put in an extraction plant of supercritical carbon dioxide, to react for a certain time in supercritical carbon dioxide liquid at the proper pressure and temperature, a vent valve is opened to rapidly empty carbon dioxide, so that a pollen cell expands acutely due to larger pressure difference of the inside and the outside, thereby cracking. The method has the advantages that the operation is simple and convenient, the cost is low, the whole process is performed below 50 DEG C, the broken-face time does not exceed 30 minutes, the influence of the product by thermotropy is reduced, so that the active ingredient is preserved completely, at the same time, bacillus can be killed, the unification of the broken-face and the sterilization processes is realized, the broken-face ratio of the pollen cell is high, but the percentage of damage is low, and the inclusion still exists in a cracked pollen wall under the dry condition, thereby favoring the preservation of the nutritious content.

The invention belongs to the technical field of organic and inorganic composite materials, in particular to a preparation method of organic and inorganic composite fibrous materials with supercritical carbon dioxide. The method includes pre-treatment and activation treatment of cellulose, doping of inorganic sol to the cellulose, etc. The invention makes use of the strong permeability of the carbon dioxide under supercritical conditions, can activate the cellulose with cosolvent, or lead nano particles in the inorganic sol to be absorbed and settled on the surface of the cellulose to form an even, continuous and stable coating layer; meanwhile, some sol particles penetrate into the fiber, so as to dope plenty of cellulose. The supercritical carbon dioxide adopted by the invention is safe, reliable, non-toxic, no pollutant and recyclable, and is environment friendly green solvent. The method of the invention is simple and easy to be operated, and the hybrid material has broad application prospect.

The invention pertains to the technical field of catalyst, particularly relating to a method for preparing propylene catalyst by propane dehydrogenation under carbon dioxide atmosphere and an application thereof. The catalysts currently used in the reaction have the disadvantages of low activity, poor stability, high price, etc. HZSM-5 ziolite is treated with high-temperature water vapor, and the ziolite is then taken as a carrier and zinc oxide is taken as an active ingredient to prepare catalyst by the impregnation method of the prior art. The catalyst is applied to the reaction for preparing propylene by propane dehydrogenation under carbon dioxide atmosphere, and the catalyst has the advantages of simple operation, high activity, sound stability, low cost, etc..

The invention provides a loaded rare-earth three-way catalyst used for the copolymerization of carbon dioxide and epoxide, which is prepared through constant-temperature sealed magnetic stirring grinding or mechanical oscillating grinding of a rare-earth three-way catalyst and a carrier. The load ratio between the mol of Zn in the rare-earth three-way catalyst and the mol of the carrier is 1:0.5 to 1:7. Catalytic activity is more than 7000g of polymer per mol of Zn, which is increased by more than 30 percent to 48 percent compared with the catalytic activity of the rare-earth three-way catalyst which is not supported used for the copolymerization of CO2 and propylene oxide. The number average molecular weight of the polymer produced is more than 100,000 and the alternating structure of the carbon dioxide and the epoxide is more than 95 percent.

The invention discloses a method for extracting nutmeg oil by supercritical carbon dioxide. The method uses the supercritical carbon dioxide for extracting fat-soluble ingredients in nutmeg, and then uses the difference of the solubility of the supercritical carbon dioxide in a first stage rectifying column for separation, and finally the separation and refining is carried out in a second stage separator. The extraction and precision separation of nutmeg aromaticity ingredient nutmeg oil is disposably carried out. The dehydration and impurity removal can be simultaneously carried out in the process of separation. The obtained nutmeg oil product is characterized by aromatic flavor, comprehensive ingredients, good product quality, difficult degradation of active ingredient and high product yield without containing waxiness component, solid content, organic solvent, agriculture remanet and heavy metal pollution and is convenient for large scale commercial process. The extractive is easy to be conserved after dehydration and refining removal of impurities.

The invention relates to a preparation method of a calcium-based sorbent of carbon dioxide, taking acetic acid waste water and the calcium-based sorbent as raw materials. The preparation method is as follows: under a condition of normal temperature and pressure, the acetic acid waste water is added in to a container, the calcium-based sorbent is added into the acetic acid waste water while stirring, the mol ratio between the acetic acid in the acetic acid waste water and the calcium in the calcium-based sorbent is over 1.5:1; stirring is kept in the reaction to ensure uniform reaction between the calcium-based sorbent and the acetic acid waste water, a reaction product in the container is dehydrated by heating; acetone is released by reaction product obtained from the calcium-based sorbent conditioned by the acetic acid waste water; and the acetone is recycled in a method of carbonization; and the left solid product is the calcium-based sorbent of the carbon dioxide. The method can be applied in the technique of large-scale removal of carbon dioxide by cyclic calcination and carbonation in the combustion or gasification of fossil fuel and biomass, besides, the acetone which is an important chemical raw material can be recycled from the acetic acid waste water.

The invention relates to the applied technology field of medicine, foodstuff and health-care food processing and belongs to a method of extracting bee pollen oil from broken bee pollens by supercritical carbon dioxide. The method adopts a continuous process of breaking bee pollens by supercritical carbon dioxide and extracting bee pollen oil subsequently. The process is simple and includes the following steps: firstly, bee pollens are put into the extracting kettle of an extracting device of supercritical carbon dioxide, the temperature and pressure of the extracting kettle are controlled, an exhaust valve is opened and carbon dioxide is rapidly emptied after the pressure is maintained; secondly, carbon dioxide is continuously passed into the extracting kettle, the extraction temperature, pressure, the flow rate of carbon dioxide and the pressure and temperature of the two-stage separation are adjusted, and then bee pollen oil is collected in a separation pot after a certain period of extraction. Compared with the prior extracting method, the method of extracting bee pollen oil from broken bee pollens by supercritical carbon dioxide has the advantages of short extraction duration, high production efficiency, low energy consumption and contamination absence. The obtained product can be directly used as a high-quality material for foodstuff, health-care food and pharmaceutical products, and has a good development prospect.

The present invention provides an application of carbonated converter steel dregs in absorption of carbon dioxide by oceans. In the application, the steel scrap in steel enterprises is processed by carbonation, which means industrial waste gas or flue gas is filled into the carbonation device of the converter steel under the conditions of the temperature of 350 to 800 DEG C, the atmospheric pressure of 0.1 to 3.6 and the water vapor of 5 to 25 percent; the reaction lasts 2 to 5 hours; then the converter steel dregs after the treatment of carbonation is thrown into the ocean (in the shape of particles or brick blocks). After being improved through carbonation, the converter steel dregs are used for promoting the ocean to absorb carbon dioxide. Thus the application not only reduces the discharge of greenhouse gasses in the steel industry, but also exerts positive influence on the improvement of the marine ecosystem and the absorption of carbon dioxide by the ocean. At the same time, the application also broadens the field of utilizing the resources of converter steel dregs.

The invention provides a fleeing proof agent for the carbon dioxide flooding of oil reservoirs with ultra-low permeability and the application of the fleeing proof agent. The invention is characterized in that: the main agent of the fleeing proof agent is the amine substance of organic compounds; the fleeing proof agent comprises at least one amine substance and a release agent; the release agent is the ethanol comprising a certain amount of water, a hydrocarbon substance or nitrogen; the release agent is used to prevent the chemical reaction caused by the premature contact between the amine and the carbon dioxide. The invention is suitable for the gas channeling inhibition during the carbon dioxide flooding process for oil reservoirs with ultra-low permeability. The invention has the advantages that: the fleeing proof agent mainly block the gas channeling channel by the salt precipitation generated by the reaction between the carbon dioxide and the amine; the generation time of the salt precipitation is controlled by the injection volume of the release agent; the swept volume displaced by the carbon dioxide is enlarged, and the improvement of the economic benefit of carbon dioxide flooding is favored.

The invention discloses a discharge reducing and resourcing method of coal-burning power station flue gas carbon dioxide, which is characterized by the following: adopting amino material as adsorbent; injecting amino material solution as ammonium salt pattern into the flue gas of carbon dioxide adsorbing system after pre-dedusting the tail part of coal-burning stove to reduce 20-95% carbon dioxide in the flue gas; separating and purifying to obtain high-purity carbon oxide; fitting for industrial, chemical, food manufacturing, oil extracting oil displacement and so on; making the escape rate of ammonium in the clean gas discharged by defroster not more than 15mg / Nm3. The invention simplifies the flow path technique with obvious kind and quantity of manufacturing equipment, which has more widely using prospect.

To provide a substrate processing unit that can quickly and easily remove physical films and a substrate processing method therefor. This substrate processing unit comprises a loading portion for loading a substrate formed with physical films, a dry ice supply portion for providing dry ice particles or carbonic anhydride, a spray portion for spraying the dry ice particles supplied from the dry ice supply portion via one or more nozzles or solidifying the carbonic anhydride and spraying it onto the substrate for primary surface treatment of the physical films and a surface treatment portion for selectively removing the physical films subjected to primary surface treatment.

The invention discloses a waste gas purifier, including a cooling unit with a cooling room for containing liquid coolant and a waste gas transfer tube penetrating the cooling room and immerged into the liquid coolant, the cooling unit is used for cooling waste gas inputted into the transfer tube; a dust removing unit arranged on backward position side of the cooling unit for removing harmful substance and flour dust contained in the waste gas; a absorption unit arranged on backward position side of the dust removing unit and containing the absorption liquid, for removing carbonic anhydride and precipitate from the waste gas by reacting the absorption liquid with the carbonic anhydride and precipitate in the waste gas to generate precipitate; and a purification unit arranged on backward position side of the absorption unit and containing purified water for removing remained harmful substance and flour dust in the waste gas. The invention also discloses an exhaust gas cleaning method.

The invention discloses a method for making gases by using carbon dioxide to replace or partially replace steam. In the method, the heat supply is provided by air blowing, and carbon dioxide is used as a gasificaton agent; gases with rich carbon monoxide are made by a prior fixed bed gasifier or YH fine-coal briquetting continuous gasifier; carbon dioxide can be supplied from the vent gases with rich carbon dioxide in any work section of the synthetic ammonia production; a carbon dioxide buffer tank and a steam buffer tank adopted in the method can be connected in parallel or in series. The method of the invention fully utilizes available resources, saves energy, reduces energy consumption and simultaneously improves the utilization efficiency of steam, thereby lowering steam costs.

The invention provides a method for realizing zero emission of carbon dioxide by former body removal of respirable particulate matter from fired coal. The method is characterized in that a bag type dust collector is used for filtering and removing respirable particulate matter from coal-fire flue gas, and comprises the following steps: the flue gas is input into a first fluidized bed reactor, with potassium bicarbonate produced by the reaction between carbon dioxide and potassium carbonate; the flue gas is separated by a first cyclone separator into purified flue gas and potassium bicarbonate, the purified flue gas is sent out, potassium bicarbonate is input into a second fluidized bed reactor to be subjected to reaction which can produce potassium carbonate and carbon dioxide, potassium carbonate is sent back to the first fluidized bed reactor; and carbon dioxide is separated by a second cyclone separator into purified gas and other isolation, the purified gas is sent out, and the other isolation is sent back to the second fluidized bed reactor. The invention also provides a device for realizing zero emission of carbon dioxide by former body removal of respirable particulate matter from fired coal. The invention has the advantages of reducing the emission of greenhouse gases and the running cost of the device.

The invention relates to a method of carbon dioxide ion water online preparation and the device. Carbon dioxide gas passes through a pressure adjusting valve and is subsequently mixed with the deionized water in a tee and enters the mixed tube in the tangential direction. The mixture forms a spire swirl in the mixing chamber of the mixed tube. The bubble in the mixture is broken up under the centrifugal force. The carbon dioxide gas is dissolved into the deionized water to form ion water, which flows out through a discharge pipe. A conductivity probe detects the conductivity in the ion water and inputs the data into the controller and compares with the set conductivity. The controller outputs adjusting signal according to the difference between two conductivities, adjusts the opening of the pressure adjusting valve, regulates the pressure of the carbon dioxide gas and controls the ion concentration of the ion water. The device has a simple structure. Carbon dioxide gas can be sufficiently dissolved under the swirl work in the mixed tube. The controllability of the carbon dioxide concentration can be largely increased.

The invention relates to a method for preparing a crosslinked carbon dioxide-propylene oxide copolymer. The method comprises the following steps that: 100 portions of carbon dioxide-propylene oxide copolymer resins, 0.05 to 1 portion of peroxide, 1 to 10 portions of silane coupling agents and 0.01 to 0.3 portion of catalysts are mixed in an internal mixer; the temperature in the internal mixer is between 130 and 180 DEG C, and the blending time is between 3 and 10 minutes; and the resins after blending are crosslinked for 4 to 96 hours in hot water at a temperature of between 30 and 90 DEG C after hot press molding at a temperature of 150 DEG C, and then the crosslinked carbon dioxide-propylene oxide copolymer is prepared. The gel content measured is between 15 and 85 percent. The range of the mechanical properties is as follows: the tensile strength is between 30 and 45 MPa, and the elongation at break is between 3 and 8 percent. The application scope of the carbon dioxide-propylene oxide copolymer is effectively expanded through crosslinking.

The invention discloses a carbon dioxide based non-fluorine refrigerant, which is characterized in that THE carbon dioxide with mass percentage between 5 and 20 percent is mixed with one or more components as the propane, butane and cyclobutane, so as to produce environmental protection and green refrigerant. The invention has the advantages of no toxicity, no pollutions, no corrosions or less combustibleness.

The invention relates to a method for extracting an alkaloid from traditional Chinese medicine radix gynurae segeti by using supercritical carbon dioxide. The method comprises the following steps: the food grade CO2 is adopted to be transformed into supercritical CO2 by pressurization; the crushed radix gynurae segeti medicinal herb is thrown into an extraction kettle to obtain a crude extract by selecting the process parameters of temperature, pressure, time and the like, and the total alkaloid in the traditional Chinese medicine radix gynurae segeti is obtained from the crude extract by post-treatment. The invention has the advantages of simple and economic process flow and high operability, and can be used for industrial production, and the obtained total alkaloids in the radix gynurae segeti can be used for traditional Chinese medicine preparation.

The invention relates to an electrochemical reducing method of carbon dioxide in ionic liquid and an electrochemical reducing device. The method comprises following steps: injecting ionic liquid in a cathode chamber in the electrochemical reducing device, inputting the carbon dioxide, inputting hydrogen on the inner side of an anode bipolar plate, oxidizing the hydrogen on an anode, generating hydrogen ions, enabling H+ to traverse through proton exchange membrane to reach a cathode, transmitting electrons to the cathode through an external circuit, enabling the carbon dioxide and the H+ to generate electrochemical reduction reaction on the cathode, generating organic compound such as carbinol and the like, and obtaining the carbinol, water and other secondary reaction products through distilling the organic compound which is generated. The ionic liquid of the invention has very high electrical conductivity and ion mobility, the ionic liquid is suitable to be used as a media system ofelectrochemical reaction, simultaneously, the ionic liquid has the advantages of low volatility and small toxicity, competitive reaction of the H+ is inhibited, since the solubility of the carbon dioxide in the ionic liquid is very high, the efficiency of the electrochemical reduction reaction of the carbon dioxide is also comparatively high, and the electrochemical method of the invention utilizes CO2 to generate the organic compounds such as the carbinol and the like (by products are aminic acid, formaldehyde and the like), which realizes the resource utilization of the CO2.

To provide a substrate processing unit that can quickly and easily remove physical films and a substrate processing method therefor. This substrate processing unit comprises a loading portion for loading a substrate formed with physical films, a dry ice supply portion for providing dry ice particles or carbonic anhydride, a spray portion for spraying the dry ice particles supplied from the dry ice supply portion via one or more nozzles or solidifying the carbonic anhydride and spraying it onto the substrate for primary surface treatment of the physical films and a surface treatment portion for selectively removing the physical films subjected to primary surface treatment.

The invention discloses a polylactic acid preparation method, belongs to the field of preparation of polylactic acid, and concretely provides an aminopolylactic acid preparation method with simple preparation process and high amino termination rate. The aminopolylactic acid preparation method comprises the following steps: reacting tert-butoxycarbonyl carbonic anhydride with aminopropanol to synthesize tert-butyloxycarbonyl aminopropanol, initiating ring-opening polymerization of L-lactide with tert-butyloxycarbonyl aminopropanol as an initiator under the catalysis of stannous octoate to synthesize tert-butyloxycarbonylamino-terminated polylactic acid, carrying out trifluoroacetic acid treatment to remove a tert-butyloxycarbonyl group to obtain amino-terminated polylactic acid, and initiating ring-opening polymerization of w-benzyloxycarbonyl-L-lysine-N-carboxylic anhydride with aminopolylactic acid as a macromolecular initiator to synthesize polylactic acid-polylysine. The method has a simple preparation process, and the polylactic acid-polylysine prepared in the invention has a high amino termination rate.

The procedure consists of subjecting the product to osmosis in order to force the fruit perspiration until reducing its water content between 6 and 10%, or whether using the vacuum cooling (vacuum cooler) technique or through a dry air stream, after which said products are flashily frozen in a tunnel or closet with liquid nitrogen, carbonic anhydride or mechanical cooling depending on the product size and shape (whole, peeled or sliced), at a temperature below −40° C. The dry air can be supplied through a dehumidifier, or it can either be dried through a strong air cooling and then heating.

The invention relates to a low-haze high-carbon dioxide barrier polyester bottle which is characterized by being manufactured by mixing bottle grade polyester, high-barrier material and interface compatibilizer to be blown by a bottle blowing machine. The content of the bottle grade polyester accounts for 80-99 weight percent in the polyester bottle; the content of the high-barrier material accounts for 1-20 weight percent in the polyester bottle; the interface compatibilizer is maleic anhydride graft polyacrylic acid and ethene acrylate copolymer; and the content of the interface compatibilizer accounts for 0.1-0.5 weight percent in the polyester bottle. The invention also relates to a method for producing the low-haze high-carbon dioxide barrier polyester bottle. The invention has the advantage that the polyester bottle has low haze under the precondition of ensuring the carbon dioxide barrier ability of the polyester bottle.

The invention discloses a high-density carbon dioxide sterilizing device, which includes a high-density carbon dioxide producing and delivering unit, which is connected with a reaction kettle and is used for delivering the produced high-density carbon dioxide to the reaction kettle after being preheated by a preheater, and sterilizing the sample in the reaction kettle; a sterile isolating unit, which is a hollow sterile enclosed space, and in which the reaction kettle is placed in the sterile isolating unit; a heat preserving unit, which is respectively connected with the preheater and the reaction kettle, and is used for controlling the temperature in the preheater and the reaction kettle; a digital automatic control unit, which is respectively connected with the high-density carbon dioxide producing and delivering unit and the reaction kettle and is used for sitting, controlling, recording and processing the temperature and the pressure parameter in the high-density carbon dioxide producing and delivering unit, and the temperature and the pressure parameter in the reaction kettle. The high-density carbon dioxide sterilizing device has the advantages that the reaction kettle is arranged in the sterile isolating unit, second pollution is avoided, cleaning is facilitated, space and cost are saved, and the process effect is improved.

The present invention discloses a hydrocarbon oil convert method, wherein the method includes the following procedures: under cracking condition, contact hydrocarbon oil with energizing agent in a reactor to obtain reaction product and spent catalyst; separate the reaction product and spent catalyst, contact the spent catalyst with oxygen-containing gas in a first regenerator to obtain forming gas and semi- regenerated catalyst; separate the forming gas and the semi- regenerated catalyst, and the semi- regenerated catalyst regenerates in a second regenerator and the regenerated catalyst can be used for periodic duty, wherein the spent catalyst contacts with the oxygen-containing gas with a accessory ingredient exists, and the accessory ingredient contains heat resisting inorganic oxidate carrier and active ingredient that loaded on the carrier and can adsorb carbonic anhydride; the accessory ingredient desorbs carbonic anhydride in the second regenerator and desorbed accessory ingredient can be used for periodic duty. The hydrocarbon oil convert method provided in the invention can improve hydrogen rate of production while heavy crude hydrocarbon lightweight.

The invention discloses a device adopting the high-temperature burning of the garbage to produce the carbon dioxide. With the device, the temperature inside the burning furnace can exceed 1200 DEG C, and the content of the dioxin in the smoke generated in the furnace is greatly reduced, but the concentration of the CO2 gas is greatly increased, so that the CO2 gas in the smoke has the industrialized recycling value. On the basis of the original garbage burning electricity generation device, the device is additionally provided with an air separation device and a biochemical processing pool; the methane that is generated in the biochemical processing pool is introduced to fire the garbage that is dried in the burning furnace; the pure oxygen that is generated by the air separation device is directly introduced into the burning furnace to assist the combustion of the garbage for adequate combustion; the smoke is desulfurized and purified to get the CO2 gas after the purification; the gaseous CO2 is converted into the liquid CO2 through a liquefied furnace.

The invention pertains to the technical field of catalyst, particularly relating to a method for preparing propylene catalyst by propane dehydrogenation under carbon dioxide atmosphere and an application thereof. The catalysts currently used in the reaction have the disadvantages of low activity, poor stability, high price, etc. HZSM-5 ziolite is treated with high-temperature water vapor, and theziolite is then taken as a carrier and zinc oxide is taken as an active ingredient to prepare catalyst by the impregnation method of the prior art. The catalyst is applied to the reaction for preparing propylene by propane dehydrogenation under carbon dioxide atmosphere, and the catalyst has the advantages of simple operation, high activity, sound stability, low cost, etc..

The invention relates to a method of utilizing supercritical carbon dioxide to achieve rarefaction and expansion of leather. The leather to be treated is put in the airtight reactor, the reaction condition is constant at 33 to 43 DEG C, carbon dioxide is introduced into the reactor till the reactor pressure reaches 8 to 16 Megapascal, the pressure is maintained about 1 to 5 hours and then is dropped to atmospheric pressure, and the treated leather is obtained. The invention solves the existing problems of the difficult rewatering of dried leather and the difficult recycling, achieves the rarefaction and expansion of leather fiber; the method of utilizing supercritical carbon dioxide to achieve rarefaction and expansion of leather has the advantages of the simple process, the convenient operation, the high production efficiency, no pollution, repeatedly recycling of carbon dioxide, and being utilized in leather industry and being a clean anhydrous production technology.