Process for the removal and concentration of a component gas from a multi-gaseous stream专利检索-酸性气体天然气燃料气体燃料种类专利检索查询-专利查询网

Process for the removal and concentration of a component gas from a multi-gaseous stream

阅读：38发布：2023-04-07

专利汇可以提供Process for the removal and concentration of a component gas from a multi-gaseous stream专利检索，专利查询，专利分析的服务。并且A process and related system for the removal and concentration of a component gas from a stream containing a plurality of gaseous components. The process is directed to the removal and subsequent concentration of a gas stream component in which the component exists as a particularly small percentage (as low as 1 percent or less) of the total stream volume. It is especially appropriate for the removal and concentration of organic and inorganic sulphur gases, such as hydrogen sulphide or sulphur dioxide from effluent acid gas streams. The system is of the regenerative liquid solvent type using an absorber tower and subsequent solvent fractionator. The solvent is injected into the absorber tower where contact is made with the acid gas stream having a component gas, such as the hydrogen sulphide, in relatively small quantity. The component gas is absorbed under closely controlled pressure and temperature conditions. In the case of hydrogen sulphide, the solvent used is preferably Nmethyl-2-pyrrolidone which, when saturated is passed to the fractionator column where the hydrogen sulphide is released due to a controlled increase in temperature and reduction in pressure. The hydrogen sulphide is then passed to a separator where free water in the acid stream is accumulated and after which the concentrated hydrogen sulphide is passed to a boiler. There, a portion of the hydrogen sulphide is burnt to sulphur dioxide under controlled conditions. The sulphur dioxide and remaining hydrogen sulphide are then combined in presence of a catalyst and chemically reacted to produce water and commercially high grade elemental sulphur.，下面是Process for the removal and concentration of a component gas from a multi-gaseous stream专利的具体信息内容。

权利要求

2. The process according to claim 1 wherein prior to the recycling of said regenerated absorbent to the absorption vessel, said regenerated absorbent is conducted to said residue gas stream upstream of said residue absorption zone for providing a closed conduit liquid absorbent circuit for maximizing concentration of said low volume component gas at the outlet of said absorption vessel.

3. The process according to claim 2 wherein, prior to recycling the liquid absorbent to the absorption vessel, it is withdrawn from the desorption zone and recycled back thereinto so as to enhance removal and final concentration of the said low volume component gas from the liquid absorbent.

4. The process according to claim 1 wherein prior to recycling the liquid absorbent to the absorption vessel, it is withdrawn from the desorption zone and recycled back thereinto for enhancing removal and final concentration of said low volume component gas from the liquid absorbent.

5. The process according to claim 1 wherein the low volume component gas liberated from said absorbent in the desorption zone is conducted to a separator operated under pre-determined conditions for removing water vapor therefrom, separating the water vapor in liquid state from said low volume component gas and conducting the water to the desorption zone so as to control the desorption characteristics of the absorbent suspended therein.

6. The process according to claim 2 wherein the low volume component gas liberated from said absorbent in the desorption zone is conducted to a separator operated under pre-determined conditions for removing water vapor therefrom, separating the water vapor in liquid state from said low volume component gas and conducting the water to the desorption zone so as to control the desorption characteristics of the absorbent suspended therein.

7. The process according to claim 3 wherein the low volume component gas liberated from said absorbent in the desorption zone is conducted to a separator operated under pre-determined conditions for removing water vapor therefrom, separating the water vapor in liquid state from said low volume component gas and conducting the water to the desorption zone so as to control the desorption characteristics of the absorbent suspended therein.

8. A process for the separation of hydrogen sulphide from an industrial gas stream having a hydrogen sulphide component as low as approximately 1 percent which comprises the steps of concentrating the hydrogen sulphide by contacting the stream with a liquid, water soluble absorbing agent under controlled conditions in a first contact zone to thereby absorb hydrogen sulphide, and removing the hydrogen sulphide loaded absorbing agent to a liberation zone while a residue gas stream containing trace hydrogen sulphide is removed for subsequent processing to second contact zone, liberating the hydrogen sulphide from the absorbing agent at rates of concentration in accordance with or dependent on predetermined operating absorbent and gas stream flow ratios, conveying the liberated absorbing agent to the second contact zone for contacting said residue gas stream, conducting the residue gas stream and liberated absorbing agent into a separator for removing the absorbent from the stream, and conducting said absorbent back to said first contact zone for contacting said industrial gas stream.

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Process for the removal and concentration of a component gas from a multi-gaseous stream

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