Title:
FLUE GAS DESULFURIZATION DEVICE, COMBUSTION SYSTEM AND COMBUSTION METHOD
Document Type and Number:
WIPO Patent Application WO/2011/145160
Kind Code:
A1
Abstract:
Disclosed is a desulfurization device that releases exhaust gas from the desulfurization device into the atmosphere without reduction in CO2 recovery rate and without mercury components, and a combustion system that uses said desulfurization device. Because the absorbent (6) of the desulfurization device is drawn from an absorbent reservoir (11) by a circulating pump (5) and sprayed through spray nozzles (4) into a desulfurization-absorption unit (26) and, in the absorbent reservoir (11), is mainly circulated outside the wall of a water seal tube (7) by a stirrer (10), the flow of the absorbent (6) that falls from the desulfurization-absorption unit (26) into the water seal tube (7) flows in a single direction from top to bottom and hinders the ascension of gas bubbles. Intermixing of the gas (27) for oxidizing the sulfur dioxide, which is generated in the absorbent, with the desulfurization device exhaust gas (2) is thereby prevented, efficient CO2 recovery is possible without reduction in the CO2 concentration recovered from the exhaust gas after desulfurization by the CO2 recovery device (17) and mercury in the combustion exhaust gas is absorbed in the absorbent of the desulfurization device (3) and is not released directly into the atmosphere.
More Like This:
Inventors:
MITSUI YOSHIAKI (JP)
KIKKAWA HIROFUMI (JP)
IMADA NORIYUKI (JP)
ODA NAOKI (JP)
NAKAMOTO TAKANORI (JP)
NOSAKA HIROYUKI (JP)
KIKKAWA HIROFUMI (JP)
IMADA NORIYUKI (JP)
ODA NAOKI (JP)
NAKAMOTO TAKANORI (JP)
NOSAKA HIROYUKI (JP)
Application Number:
PCT/JP2010/007554
Publication Date:
November 24, 2011
Filing Date:
December 27, 2010
Export Citation:
Assignee:
BABCOCK HITACHI KK (JP)
MITSUI YOSHIAKI (JP)
KIKKAWA HIROFUMI (JP)
IMADA NORIYUKI (JP)
ODA NAOKI (JP)
NAKAMOTO TAKANORI (JP)
NOSAKA HIROYUKI (JP)
MITSUI YOSHIAKI (JP)
KIKKAWA HIROFUMI (JP)
IMADA NORIYUKI (JP)
ODA NAOKI (JP)
NAKAMOTO TAKANORI (JP)
NOSAKA HIROYUKI (JP)
International Classes:
B01D53/18; B01D53/50; B01D53/64; B01D53/77; F23C9/08; F23J15/00; F23L7/00
Foreign References:
| JP2001120948A | 2001-05-08 | |||
| JPH08257347A | 1996-10-08 | |||
| JPH11290646A | 1999-10-26 | |||
| JPH09208277A | 1997-08-12 | |||
| JPH0641826U | 1994-06-03 | |||
| JP2007147162A | 2007-06-14 | |||
| JP2007147161A | 2007-06-14 | |||
| JPH05187609A | 1993-07-27 | |||
| JPH0571726A | 1993-03-23 |
Attorney, Agent or Firm:
MATSUNAGA, Takayoshi et al. (JP)
Takayoshi Matsunaga (JP)
Takayoshi Matsunaga (JP)
Download PDF:
Claims: