BOILER SYSTEM AND ELECTRIC POWER GENERATION PLANT PROVIDED WITH SAME

Title:

BOILER SYSTEM AND ELECTRIC POWER GENERATION PLANT PROVIDED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2015/186818

Kind Code:

A1

Abstract:

Provided is a boiler system (100) provided with: a boiler (10) for combusting fuel to generate combustion gas, the fuel containing less than 8.0% by weight of sulfur, less than 0.1% by weight of chlorine, and less than 20.0% by weight of water; a bag filter (20) for removing sulfur oxides and soot/dust; a denitrification unit (30) for removing nitrogen oxides; a desulfurization absorbent supply unit (40) for admixing a desulfurization absorbent into the combustion gas on the upstream side of the bag filter (20); and a reformer (50) for admixing a denitrification reducing agent into the combustion gas on the upstream side of the denitrification unit (30). The bag filter (20) performs dry desulfurization, the temperature of the combustion gas flowing through the bag filter (20) and into the denitrification unit (30) is kept above 200°C and no higher than 350°C, and the combustion gas from which sulfur oxides were removed by the bag filter (20) flows into the denitrification unit (30) without being heated on the upstream side of the denitrification unit (30).

Inventors:

MASUDA TOMOTSUGU (JP)
KIYOSAWA MASASHI (JP)

Application Number:

PCT/JP2015/066296

Publication Date:

December 10, 2015

Filing Date:

June 05, 2015

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

F23J15/00; F22B31/08; F23L15/00

Domestic Patent References:

WO2013049058A1

2013-04-04

Foreign References:

JPS50102566A	1975-08-13
JP2012223668A	2012-11-15
JP2011120981A	2011-06-23
JPH0312222A	1991-01-21
JPH0345812A	1991-02-27
JP2002113331A	2002-04-16
JP2006205128A	2006-08-10
JPH08192029A	1996-07-30
JPH1057757A	1998-03-03

Other References: