50 results about "CO2 - Carbon dioxide" patented technology

A method for the production of syngas from methanol feedstock is disclosed. The methanol feed (110) is supplied to a partial oxidation reactor (112) with oxygen (114) and optionally steam (116) to yield a mixed stream (118) of hydrogen, carbon monoxide, and carbon dioxide. The carbon dioxide (122) is separated out and the hydrogen and carbon monoxide mixture (124) is fed to a cold box (126) where it is separated into hydrogen-rich and carbon monoxide-rich streams (130, 128). The separated carbon dioxide (122) can be recycled back to the partial oxidation reactor (112) as a temperature moderator if desired. The carbon monoxide-rich stream (128) can be reacted with methanol (134) in an acetic acid synthesis unit (132) by a conventional process to produce acetic acid (136) or an acetic acid precursor. Optionally, an ammonia synthesis unit (144) and / or vinyl acetate monomer synthesis unit (156) can be integrated into the plant.

A p reparation method of a porous polymerized ionic liquid used for capture / absorption of CO2 belongs to the technical field of polymerized ionic liquids. In the invention, an ionic liquid monomer, of which the cations have amino groups, is polymerized to form the polymerized ionic liquid, wherein CO2 is fed into a polymerizing reactor during the polymerization process so that the CO2 is combined with the amino groups. The polymerized ionic liquid then is used for removing the CO2 at a high temperature and under a low pressure, wherein a large quantity of pores are formed during the CO2 removal process, thereby preparing the polymerized ionic liquid which has large specific surface area and large pore volume. Meanwhile, the amino groups are exposed out of the surface of the polymerized ionic liquid again, so that the porous polymerized ionic liquid can be used for adsorbing the CO2.

The invention relates to a three-stage three-section membrane separation system and method for capturing carbon dioxide in flue gas. Raw material flue gas is pretreated by a water washing tower to remove impurities, and enters a first-stage first-stage membrane separator after being compressed and humidified; the intercepted gas of the first-stage first-stage membrane separator is humidified and then enters a second-stage membrane separator, the intercepted gas of the second-stage membrane separator is continuously humidified and enters a third-stage membrane separator, and the intercepted gasof the third-stage membrane separator is directly emptied; the permeated gas of the second-stage membrane separator and the third-stage membrane separator are returned to an inlet of the first-stagefirst-stage membrane separator; the permeated gas of the first-stage first-stage membrane separator enters a second-stage membrane separator after being compressed and humidified, and the permeated gas of the second-stage membrane separator enters a third-stage membrane separator after being compressed and humidified; the trapped gas of the second-stage membrane separator returns to the inlet of the first-stage first-stage membrane separator, and the trapped gas of the third-stage membrane separator returns to the inlet of the second-stage membrane separator; the permeation gas of the third-stage membrane separator is carbon dioxide. The purity of carbon dioxide is greater than 95%, and the capture rate of carbon dioxide is greater than 70%.

A fuel cell system comprises a fuel cell assembly, a carbon-dioxide-removal unit, an anode exhaust conduit connecting the fuel cell assembly and the carbon-dioxide-removal unit, a fuel source, an oxygen source, a fuel conduit connecting, at least in part, the fuel source with the fuel cell assembly, and a recycle conduit connecting the carbon-dioxide-removal unit with at least one of the fuel cell assembly, the fuel conduit and the fuel source. The fuel cell assembly includes at least one fuel cell, each fuel cell including an anode and a cathode. The carbon-dioxide-removal unit removes carbon dioxide that is in a gas phase. The carbon-dioxide-removal unit includes a carbon-dioxide-removing material. The fuel source and the oxygen source are each independently in fluid communication with the fuel cell assembly. The fuel conduit and the recycle conduit are optionally merged into a single recycle-fuel conduit that extends to the fuel cell assembly. The recycle conduit and / or the recycle-fuel conduit directs essentially all gaseous fluid from the carbon-dioxide-removal unit to the fuel cell assembly.

A total organic carbon measuring device comprises: a sample supply unit that collects and supplies sample water; an oxidative decomposition unit that is connected to the sample supply unit and oxidizes organic matter contained in the sample water supplied from the sample supply unit to carbon dioxide; a carbon dioxide separation unit that transfers carbon dioxide from the sample water that has passed through the oxidative decomposition unit to measurement water consisting of deionized water; a conductivity measuring unit that measures the conductivity of the measurement water flowing from the carbon dioxide separation unit; and an arithmetic processing unit that calculates the TOC concentration of the sample water from a measured value obtained by the conductivity measuring unit. A measured value obtained by the conductivity measuring unit when pure water subjected to aeration treatment is allowed to pass through the oxidative decomposition unit of which oxidative decomposition function is turned off and then flows through a sample water channel is defined as a system blank value.

A method for cyclic utilization of rejected biomass includes such steps as decomposing in a multi-class fermenting pool, gas-solid-liquid separation, desulfurizing the marsh gas containing H2 and methane, feeding the marsh gas in the fuel battery with anionic exchange membrane, generating CO2 at negative electrode, using the separated liquid for soilless culture of plants, using said fuel battery to power the artificial light source, and using the residual dregs as the crop culturing matrix or organic fertilizer.

The invention discloses a preparation method for a porous polymeric ionic liquid for carbon dioxide adsorption, and belongs to the technical field of polymeric ionic liquids. The preparation method comprises the following steps: by taking an alkali polymerizable ionic liquid which takes negative ions as hydroxy radicals (OH-) as a polymeric monomer, introducing carbon dioxide into a polymerization reactor in the polymerization process, enabling the carbon dioxide to be combined with the hydroxy radicals, performing low-temperature vacuum freezing on the obtained polymeric ionic liquid, removing the carbon dioxide by using a sublimation method under the condition of being lower than the freezing point of the carbon dioxide, and forming a great amount of pores in the polymeric ionic liquid in the sublimation process of the carbon dioxide, thereby preparing an alkali polymeric ionic liquid with a relatively large specific surface area and a pore volume. As the hydroxy radicals are re-exposed on the surface of the polymeric ionic liquid, the prepared porous polymeric ionic liquid has the property of adsorbing carbon dioxide.

The present invention is applicable to the technical field of combustible ice mining, and provides a method for mining combustible ice, including: dividing blocks, exploring geological conditions and defining the mining range, and dividing the mining range into multiple operation areas, wherein each operation The area can ensure that no collapse occurs during the mining process; pipeline laying, gas production pipelines, gas transmission pipelines, gas production branch pipes and gas transmission main pipes are laid in the operation area, and the gas production branch pipes and the gas transmission branch pipes are arranged at intervals ; mining operations, decompose combustible ice by reducing pressure and / or increasing temperature, and transport the decomposed methane gas to the storage device; repair operations, inject carbon dioxide into the operation area at high pressure from the gas transmission device, and the carbon dioxide is in the The operation area diffuses and generates carbon dioxide hydrate; the cycle operation completes the mining operation and repair operation of each operation area in sequence. The combustible ice mining method provided by the invention improves the mining efficiency of the combustible ice and simultaneously realizes high-efficiency carbon fixation and restoration of geological layers.

A p reparation method of a porous polymerized ionic liquid used for capture / absorption of CO2 belongs to the technical field of polymerized ionic liquids. In the invention, an ionic liquid monomer, of which the cations have amino groups, is polymerized to form the polymerized ionic liquid, wherein CO2 is fed into a polymerizing reactor during the polymerization process so that the CO2 is combined with the amino groups. The polymerized ionic liquid then is used for removing the CO2 at a high temperature and under a low pressure, wherein a large quantity of pores are formed during the CO2 removal process, thereby preparing the polymerized ionic liquid which has large specific surface area and large pore volume. Meanwhile, the amino groups are exposed out of the surface of the polymerized ionic liquid again, so that the porous polymerized ionic liquid can be used for adsorbing the CO2.