Title:
【発明の名称】硫化水素の吸収法および装置
Document Type and Number:
Japanese Patent JPH09502651
Kind Code:
A
Abstract:
A method and an apparatus for selectively removing, by liquid absorption, hydrogen sulphide from a gas containing both hydrogen sulphide and carbon dioxide, are disclosed. In a first stage of the method, the gas (3) is in a container (1) contacted, in at least one step, with a carbonate-containing alkaline solution whose pH is adjusted during the absorption by the addition of a hydroxide, such as sodium hydroxide. In a second stage of the method, the gas is combusted in a combustion device (32) for converting the hydrogen sulphide remaining in the gas to sulphur dioxide, which then is absorbed in an alkali-containing solution, such as a sodium hydroxide solution, in a wet cleaner (36). By combining the absorption of hydrogen sulphide in a carbonate-containing solution in a first stage, and the combustion of the remaining hydrogen sulphide to sulphur dioxide and the absorption of the formed sulphur dioxide in an alkaline solution in a second stage, one may attain a total hydrogen-sulphide separation of high selectivity, high degree of separation and good process economy.
Inventors:
Simonson, Eric The Second
Darkvist, Eric
Bengtsorn, Sune
Darkvist, Eric
Bengtsorn, Sune
Application Number:
JP50911894A
Publication Date:
March 18, 1997
Filing Date:
September 07, 1994
Export Citation:
Assignee:
Arbe, freckle, actie borrag
International Classes:
B01D53/14; B01D53/48; B01D53/52; C01B17/66; D21C11/06; D21C11/08; D21C11/12; (IPC1-7): B01D53/14; B01D53/52; B01J20/04; D21C11/06; D21C11/08
Attorney, Agent or Firm:
Kazuo Sato (2 outside)