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Patent Searching and Data


Title:
EXHAUST SMOKE-PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2004/023040
Kind Code:
A1
Abstract:
An exhaust smoke-processing system capable of economically removing heavy metals. The system comprises an air preheater (3) for heating air for combustion by exhaust smoke exhausted from a boiler (1), a heat recoverer (11) for heating a heat medium by exhaust smoke exhausted from the air pre-heater, a dust collector (4) for collecting soot and dust in exhaust smoke exhausted from the heat recoverer, a wet-type exhaust smoke-processing apparatus for processing exhaust smoke exhausted from the dust collector, a reheater (13) for heating exhaust smoke exhausted from the apparatus by the heat medium, and a heat medium circulation pipe passage (15) for circulating the heat medium between the reheater (13) and the heat recoverer (11). Temperature control means is provided in the heat medium circulation pipe passage. The means measures heavy metal concentration in exhaust smoke exhausted from one or more of the dust collector (4), the wet-type exhaust smoke-processing apparatus (6), and the reheater (13) and adjusts exit exhaust smoke temperature of the heat recoverer so that the measured value is within a predetermined range.

Inventors:
KIKKAWA HIROFUMI (JP)
NAKAMOTO TAKANORI (JP)
KATSUBE TOSHIO (JP)
Application Number:
PCT/JP2003/011450
Publication Date:
March 18, 2004
Filing Date:
September 08, 2003
Export Citation:
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Assignee:
BABCOCK HITACHI KK (JP)
KIKKAWA HIROFUMI (JP)
NAKAMOTO TAKANORI (JP)
KATSUBE TOSHIO (JP)
International Classes:
F23J15/00; F23J15/02; F23J15/08; (IPC1-7): F23J15/00; F23L15/00
Foreign References:
JPH09122438A1997-05-13
JPH02298316A1990-12-10
JP2000325746A2000-11-28
JP2001198434A2001-07-24
JPH0450120U1992-04-28
Attorney, Agent or Firm:
Kawakita, Takenaga (3-6 Nihonbashi-kayabacho 2-chom, Chuo-ku Tokyo, JP)
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