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Title:
METHOD FOR CLEANING FURNACE WALL TUBE OF ONCE-THROUGH BOILER
Document Type and Number:
WIPO Patent Application WO/2016/139837
Kind Code:
A1
Abstract:
Provided is a method for cleaning a furnace wall tube (5) of a once-through boiler in a water supply system in which oxygen treatment is applied, wherein the method for cleaning a furnace wall tube (5) of a once-through boiler involves chemical cleaning to selectively remove powder scale (PS), which has lower thermal conductivity than does self-oxidizing scale (HS), the self-oxidizing scale (HS) and powder scale (PS) having been produced on the inner surface of the furnace wall tube (5).

Inventors:
MAWATARI, Kenji (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
OHKUBO, Koki (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
SHIMODA, Sho (C/O Mitsubishi Hitachi Power Systems Ltd, 3-1, Minatomirai 3-Chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
Application Number:
JP2015/078193
Publication Date:
September 09, 2016
Filing Date:
October 05, 2015
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-Chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F22B37/52; F22B37/56; F28G9/00
Domestic Patent References:
2014-10-09
Foreign References:
JP2014153033A2014-08-25
JP2011227011A2011-11-10
JP5721888B12015-05-20
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (Mita 43MT Building 13th Floor, 13-16 Mita 3-Chome, Minato-k, Tokyo 73, 〒1080073, JP)
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