HIGH DESULFURIZATION-DENITRATION METHOD AND APPARATUS FOR EXHAUST GAS

Title:

HIGH DESULFURIZATION-DENITRATION METHOD AND APPARATUS FOR EXHAUST GAS

Document Type and Number:

Japanese Patent JPH07136456

Kind Code:

A

Abstract:

PURPOSE: To remove SOx and NOx from combustion exhaust, etc., containing them to a concentration as low as that of the environmental standard.

CONSTITUTION: Exhaust gas containing SOx and NOx such as fossil fuel combustion exhaust is denitrated (primary denitration process) in a catalytic denitration apparatus 2 and then desulfurized (primary desulfurization process) in a wet desulfurization apparatus 5. SOx and NOx remained in these treatments are removed in a SOx-NOx adsorption column 6 to low concentration (secondary denitration and desulfurization process). An adsorbent is regenerated by heating; desorbed NOx and SOx are sent to the primary denitration process and the primary desulfurization process respectively to make them harmless. A part of the heat generated in a fossil fuel combustion facility is utilized for the regeneration of the adsorbent.

Inventors:

KURODA OSAMU
TATE TAKAHIRO
HANAOKA HIROSHI
SAITO YOSHIO
KOMURO TAKEO
YAMASHITA HISAO
MIYADERA HIROSHI

Application Number:

JP28256893A

Publication Date:

May 30, 1995

Filing Date:

November 11, 1993

Export Citation:

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Assignee:

BABCOCK HITACHI KK

International Classes:

B01D53/34; B01D53/60; B01D53/74; (IPC1-7): B01D53/60; B01D53/34; B01D53/74

Attorney, Agent or Firm:

Takayoshi Matsunaga

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