Title:
BOILER OPERATION METHOD AND BOILER
Document Type and Number:
WIPO Patent Application WO/2014/129244
Kind Code:
A1
Abstract:
A boiler according to the present invention is equipped with: a water supply system (11) in which boiler water flows; ammonia addition equipment (12) that adds an ammonia solution to the boiler water; a pH measurement device (14) that measures the pH of the boiler water; and a control device (15). When the boiler water is heated the control device (15) controls the ammonia addition equipment (12) such that the pH of the boiler water is within a storage pH range, and controls the ammonia addition equipment (12) such that the pH of the boiler water is within the storage pH range before the flow of the boiler water in the water supply system (11) is stopped. At this time, a given pH within the storage pH range is greater than a given pH within the operating pH range. With such a boiler, corrosion of the water supply system (11) can more easily be prevented than when the water supply system (11) is charged with storage-use boiler water containing hydrazine.
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Inventors:
ANAI TOSHIHISA (JP)
Application Number:
PCT/JP2014/050970
Publication Date:
August 28, 2014
Filing Date:
January 20, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F22B37/00
Foreign References:
| JPH08219405A | 1996-08-30 | |||
| JPH076606B2 | 1995-01-30 | |||
| JP2008075983A | 2008-04-03 | |||
| JPS63105302A | 1988-05-10 | |||
| JP2004169992A | 2004-06-17 |
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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