Apparatus for removing trace amounts of ammonia from the gas discharged during a carbon-dioxide-collecting process using aqueous ammonia

Abstract

The present invention relates to an apparatus which efficiently removes trace amounts of ammonia from the gas from which carbon dioxide has been removed and which is discharged during a carbon-dioxide-collecting process using aqueous ammonia, wherein the carbon-dioxide-collecting process separates carbon dioxide from the gas discharged during the burning of fossil fuels.

Description

technical field [0001] The present invention relates to a device for removing trace amounts of ammonia carried out by the carbon dioxide absorption and separation process using ammonia water to remove carbon dioxide from a mixed gas containing carbon dioxide. Use a small amount of water in the collection device to prevent ammonia loss, use irreversible chemical reactions in the capture device to remove the ammonia contained in the flue gas and minimize the ammonia content in the exhaust gas, and remove ammonia water in the use of A device that captures trace amounts of ammonia in the gas emitted during the carbon dioxide capture process. Background technique [0002] In recent years, people have begun to realize the seriousness of the phenomenon of global warming, and countries all over the world are trying their best to find countermeasures against greenhouse gases. One of the biggest factors of such global warming is carbon dioxide. [0003] Such carbon dioxide is generat...

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Problems solved by technology

[0010] They consist of an ammonia scrubber (or absorber), which is a unit for removing the carbon dioxide separated from the flue gas and the ammonia contained in the flue gas from which the carbon dioxide has been removed; and an ammonia scrubber for recovering the scrubbed ammonia In order to meet the ammonia discharge standard value, the ammonia scrubber with such a structure needs to supply a large amount of water to improve the removal rate of ammonia, thus consuming a lot of energy in the ammonia recovery tower for recovery of ammonia, and there is carbon dioxide capture. The problem that the energy efficiency of the assembly process is reduced

[0011] In addition, such methods have limited ability to remove trace amounts of ammonia from treated flue gas.

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