摘要:
A highly alkalized humic and fulvic filter reagent for the removal of multiple contaminants from a gas is provided. The contaminants removed from the gas stream may include, but are not limited to, Carbon Dioxide, Sulfur Oxide, Nitrogen Oxides, Hydrogen Sulfides, radionuclides, mercaptans, ammonia, toxic metals, particulates, volatile vapors, and organics. The present invention further includes the disposal of the filter reagent by way of using the highly alkalized humic and fulvic filter for soil fertility, releasing the carbon dioxide from the filter reagent, converting the liquid filter reagent into a solid for disposal or for use as a contaminant removal filter for waters, wastes, and chemicals.
摘要:
A method for selectively eliminating hydrogen sulphide H 2 S from a gaseous effluent comprising at least H2S and CO2, which involves carrying out a step of selective absorption of hydrogen sulphide relative to CO2 by bringing said effluent into contact with a solution comprising (a) water and (b) at least one nitrogen compound, said compound comprising at least one tertiary amine function or hindered secondary amine function, and controlling the selectivity of the absorption by adding (c) a viscosifying agent to the absorbent solution.
摘要:
A method for removing carbon dioxide (CO 2 ) from a recycle gas system by means of an absorbent, wherein the CO 2 occurs within a process in which ethylene is oxidized by oxygen (O 2 ) to ethylene oxide (EO) in the gas phase in the presence of a catalyst, in which CO 2 is generated as by-product, by using, as absorbent, an aqueous solution of one or more amines, wherein, for further purification of the recycle gas stream obtained after the CO 2 absorption step, it is brought into intimate contact with water to which have not been added a mineral acid or higher glycol.
摘要:
A method for recovering carbon dioxide (CO2) from a gas stream is disclosed. The method includes the step of reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound. The solid material is then transported to a desorption site, where it is heated, to release substantially pure CO2 gas. The CO2 gas can then be collected and used or transported in any desired way. A related apparatus for recovering carbon dioxide (CO2) from a gas stream is also described herein.
摘要:
A CO 2 recovering apparatus includes a CO 2 absorber (16) that brings flue gas containing CO 2 into contact with CO 2 absorbent to reduce the CO 2 contained in the flue gas; and a regenerator (18) that reduces CO 2 contained in rich solvent absorbing CO 2 to regenerate the rich solvent, so that lean solvent that is the CO 2 absorbent having the CO 2 reduced in the regenerator (18) is reused in the CO 2 absorber (16). The CO 2 recovering apparatus further includes a controller that detects the difference between the gas temperature (T 1 ) of the flue gas guided into the entrance of the CO 2 absorber (16) and the gas temperature (T 2 ) of the gas exiting the CO 2 absorber (16), and the absorbent concentration (X (Vol%)) of the CO 2 absorbent; and controls to adjust the amount of water contained in the gas depending on the gas temperature difference between the gas entering and the gas exiting the CO 2 absorber (16) and to keep the absorbent concentration of the CO 2 absorbent within a set range (e.g., X 0 ±10% in a relative ratio).
摘要:
A process for capturing at least one of H2S and CO22 from a gaseous stream comprises treating the gaseous stream with an aqueous absorbent comprising a polyamine wherein the polyamine has at least one secondary amine has at least one alkyl substituent having an absence of amine groups.
摘要:
The degradation of an absorbing solution containing organic compounds having an amine function in aqueous solution is substantially reduced in the presence of a small quantity of degradation inhibiting agents derived from thiadiazole, defined by general formula (I). The absorbing solution is used to deacidify a gaseous effluent.
摘要:
Die Erfindung betrifft eine Absorberflüssigkeit, insbesondere zur Abscheidung von Kohlendioxid aus dem Rauchgas einer fossil befeuerten Verbrennungseinrichtung. Die Absorberflüssigkeit umfasst ein Absorptionsmittel, vorzugsweise in einem Zweikomponentengemisch mit einer freien Aminosäure und einem Aminosäuresalz. Der Absorberflüssigkeit ist ein oberflächenaktiver Zusatzstoff, vorzugsweise ein Tensid, zugesetzt. Die oberflächenspannungsreduzierenden Eigenschaften des Zusatzstoffes führen zu einer größeren Stoffaustausch-Wechselwirkungsfläche, so dass eine effizientere CO 2 -Abscheidung erreicht ist. Die Erfindung betrifft weiterhin ein Verfahren zu Herstellung einer Absorberflüssigkeit sowie eine Verwendung der Absorberflüssigkeit, insbesondere zur Abscheidung von Kohlendioxid aus Kraftwerksanlagen.