摘要:
The present invention relates to the separation of gases, and more specifically to an inventive process for the removal of carbon dioxide gas using carefully selected ionic liquid absorbents together with water in a carefully selected ratio.
摘要:
Disclosed are oxalate sorbent compositions, methods for their manufacture, and methods for removing mercury species from waste streams employing oxalate sorbent compositions.
摘要:
The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets shaped to minimize disruption from a gas. An embodiment of the invention is directed towards a gas liquid contactor module including a liquid inlet and outlet and a gas inlet and outlet. An array of nozzles is in communication with the liquid inlet and the gas inlet. The array of nozzles is configured to produce uniformly spaced flat liquid jets shaped to minimize disruption from a gas flow and maximize gas flow and liquid flow interactions while rapidly replenishing the liquid.
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:
A process for absorption and desorption of CO2 from an flue gas comprising feeding the flue gas into a mainly horizontal channel (20, 22, 249 where an absorption fluid is spray in to the channel in the flow direction of the flue gas and collected as CO2 rich absorption fluid at a lower part of the channel and transported into the centre of a rotating desorber wheel (30), where the CO2 is desorbed and the lean absorption fluid is returned to the channel is disclosed. This process can be utilized with absorption fluids with high concentration of conventional amine CO2 absorbents. Disclosed is also the use of an amine absorbent in a concentration of between 61 and 100% by weight for the absorption of CO2 from a gas stream, where the amine is an alkanol amine.
摘要:
A process for producing a purified synthesis gas stream from a feed synthesis gas stream comprising besides the main constituents carbon monoxide and hydrogen also hydrogen sulphide,HCN and/or COS, the process comprising the steps of: (a) removing HCN and/or COS by contacting the feed synthesis gas stream with a water gas shift catalyst in a shift reactor in the presence of steam/water to react at least part of the carbon monoxide to carbon dioxide, and to obtain a synthesis gas stream depleted in HCN and/or in COS; (b) removing hydrogen sulphide in the synthesis gas stream depleted in HCN and/or in COS by contacting this gas stream in a H2S-removal zone with an aqueous alkaline washing liquid to obtain a H2S-depleted synthesis gas stream and a sulphide-comprising aqueous stream; (c) contacting the sulphide-comprising aqueous stream with ulphide-oxidizing bacteria in the presence of oxygen in a bioreactor to obtain a sulphur slurry and a regenerated aqueous alkaline washing liquid; (d) removing carbon dioxide from the H2S-depleted synthesis gas stream, to obtain the purified synthesis gas stream and a gas stream enriched in CO2.
摘要:
A process and an apparatus for the treatment of a carbon dioxide-containing flue gas stream are described, at least part of the carbon dioxide present being removed from the flue gas stream in a separating device having in particular an absorption column 7 with the formation of a gas stream having a low carbon dioxide content and a carbon dioxide-rich gas stream. For overcoming the pressure drop caused by the carbon dioxide removal in the absorption column 7, it is proposed that the gas stream having a low carbon dioxide content and formed after the removal of the carbon dioxide from the flue gas stream is subjected to a gas stream compression, for example by means of a flue gas blower 14.
摘要:
The invention is a surface coating which will reduce the aldehyde concentration in a room via a aldehyde reactive material contained in the coating. Upon reaction, the aldehyde becomes part of the reactive molecule and, thus, is permanently held within the coating.
摘要:
The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets with reduced linear stability. An embodiment of the invention is directed towards a stability unit used with nozzles of a gas liquid contactor and/or an enhancer for stable jet formation, and more particularly to reducing the stability of liquid jets formed from nozzles of the gas liquid contactor. Another aspect of the invention relates to operating the apparatus at a condition that reduces the stability of liquid jets, e.g., a droplet generator apparatus. Yet another aspect of the invention relates to operation of the apparatus with an aqueous slurry. Still another aspect of the invention is directed towards to an apparatus for substantially separating at least two fluids.
摘要:
The invention relates to a process using a solvent combination for the gas scrubbing of industrial gases in order to separate acid gases, particularly including carbon dioxide and hydrogen sulphide. The inventive solvent combination consists of a solution of amines in water, said solution containing ammonia for improving the absorption of CO2. The group of primary and secondary amines includes all types of amines with one or two substituents. Particularly suitable as constituent of the inventive solvent combination is piperazine and piperazine derivatives.