METHOD AND DEVICE FOR TREATING NITROSO COMPOUND

Title:

METHOD AND DEVICE FOR TREATING NITROSO COMPOUND

Document Type and Number:

WIPO Patent Application WO/2016/110965

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a method which comprises adding an aqueous solution containing a hydrogen halide, e.g., hydrogen chloride or hydrogen bromide, to a liquid to be treated that contains a nitroso compound, such as an aqueous amine solution which was used for absorbing the carbon dioxide contained in a combustion discharge gas, so that the hydrogen halide is present in an amount of 2-20 mol per mol of the nitroso groups contained in the nitroso compound, and subsequently heating the mixture at ordinary pressure and a temperature which is 75ºC or higher but not higher than the boiling point of the water. By the method, the nitroso compound is decomposed and the amine is recovered.

Inventors:

YOKOYAMA KOICHI (JP)
MIYAMOTO EIJI (JP)
SHIMAMURA JUN (JP)

Application Number:

PCT/JP2015/050280

Publication Date:

July 14, 2016

Filing Date:

January 07, 2015

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

B01D53/14; B01D53/62; C01B32/50

Foreign References:

JP2015016391A	2015-01-29
JP2014526380A	2014-10-06
JPH0889756A	1996-04-09
JP2012520167A	2012-09-06
JP2006527153A	2006-11-30
JP2011115724A	2011-06-16

Other References: