Title:
BOILER FEED-WATER SYSTEM, BOILER PROVIDED WITH SAID SYSTEM, AND BOILER FEED-WATER METHOD
Document Type and Number:
WIPO Patent Application WO/2016/129395
Kind Code:
A1
Abstract:
The present invention addresses the problem of preventing the vaporization of feed-water at an economizer of a boiler provided with a furnace. A boiler feed-water system is provided with: a first route (10a) that feeds water to a feed-water heating economizer (4) that performs heat exchange with exhaust gas from a furnace; a second route (10b) that feeds water to an auxiliary boiler (2) from a feed-water outlet of the feed-water heating economizer (4); a third route (10c) that branches off from the first route (10a), bypasses the feed-water heating economizer (4), and feeds water to the auxiliary boiler (2); a temperature detection unit (11) that is provided to the second route (10b) and detects the temperature of flowing water; a flow-rate regulation unit (12) that regulates the quantity of water flowing in the first route (10a) and the third route (10c); and a control unit (13) that regulates the quantity of water in the first route (10a) and the quantity of water in the third route (10c) such that the temperature detected by the temperature detection unit (11) is kept below a first prescribed temperature that is less than the evaporation temperature of water in the feed-water heating economizer (4).
Inventors:
AMANO MASAHIRO (JP)
Application Number:
PCT/JP2016/052449
Publication Date:
August 18, 2016
Filing Date:
January 28, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F22B1/18; F22D1/12
Foreign References:
| JPH0828804A | 1996-02-02 | |||
| JP2011196646A | 2011-10-06 | |||
| JPS6390703U | 1988-06-13 |
Attorney, Agent or Firm:
FUJITA, TAKAHARU (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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