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Title:
METHOD AND APPARATUS FOR DESULFURIZATION
Document Type and Number:
Japanese Patent JP2000140557
Kind Code:
A
Abstract:

To keep high hydrogen sulfide removal efficiency, economically remove hydrogen sulfide with a low consumption of a chemical agent, and simplify the constitution of a desulfurization apparatus.

Desulfurization of an object gas 2 to be treated is carried out by bringing the object gas 2 containing hydrogen sulfide into a gas-liquid contact tower 1, supplying a chemical liquid L produced by suspending an activated carbon powder 15 as a catalyst in an aqueous sodium hydroxide N solution from above the tower, upwardly bringing the object gas 2 into contact with the chemical liquid L, producing sodium thiosulfate by reaction of hydrogen sulfide of the object gas and sodium hydroxide N in the presence of oxygen in the ambient air in the tower or in the chemical liquid L and the catalyst, and absorbing the produced sodium thiosulfate in the chemical liquid L.


Inventors:
NISHIDA SHIGEO
Application Number:
JP31822198A
Publication Date:
May 23, 2000
Filing Date:
November 10, 1998
Export Citation:
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Assignee:
KUBOTA KK
International Classes:
B01D53/18; B01D53/52; B01D53/77; B01J21/18; C02F11/02; C10L3/10; B01D53/34; (IPC1-7): B01D53/18; B01D53/34; B01D53/77; B01D53/52; B01J21/18; C02F11/02
Attorney, Agent or Firm:
Yoshihiro Morimoto