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Title:
COMBUSTION APPARATUS PROVIDED WITH SPRAY NOZZLE
Document Type and Number:
WIPO Patent Application WO/2011/152444
Kind Code:
A1
Abstract:
Provided is a combustion apparatus provided with spray nozzles which can spread atomized particles of reductant over a wide range within a furnace, so that combustion gas passing through the inside of the furnace is uniformly mixed with the reductant, to promote a reaction between the reductant and the combustion gas, and to reduce the amount of nitrogen oxide emitted from the combustion apparatus. In the combustion apparatus provided with the spray nozzles, a reductant supply system (14) for supplying a furnace (1) with a reductant fluid that contributes to the reduction of nitrogen oxide contained in combustion gas is disposed; spray nozzles (13) for spraying the reductant supplied from the reductant supply system (14) as atomized particles toward combustion gas passing through the inside of the furnace, are provided in the wall surface of the furnace downstream of burners (2); and a plurality of spray ports (30, 31) for forming flat fan-like spray shapes having different angles of spread of the atomized particles of reductant sprayed into the furnace, are provided in the tip portions of the spray nozzles (13).

Inventors:
OKAZAKI Hirofumi (HITACHI LTD., 2-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 21, 〒3191221, JP)
岡崎 洋文 (〒21 茨城県日立市大みか町七丁目2番1号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
KURAMASHI Koji (Division BABCOCK-HITACHI K.K. 6-9, Takara-machi, Kure-sh, Hiroshima 08, 〒7378508, JP)
倉増 公治 (〒08 広島県呉市宝町6番9号 バブコック日立株式会社 呉事業所内 Hiroshima, 〒7378508, JP)
OKIMOTO Hideo (Division BABCOCK-HITACHI K.K. 6-9, Takara-machi, Kure-sh, Hiroshima 08, 〒7378508, JP)
Application Number:
JP2011/062570
Publication Date:
December 08, 2011
Filing Date:
June 01, 2011
Export Citation:
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Assignee:
BABCOCK-HITACHI K.K. (14-1, Sotokanda 4-chome Chiyoda-k, Tokyo 21, 〒1010021, JP)
バブコック日立株式会社 (〒21 東京都千代田区外神田四丁目14番1号 Tokyo, 〒1010021, JP)
OKAZAKI Hirofumi (HITACHI LTD., 2-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 21, 〒3191221, JP)
岡崎 洋文 (〒21 茨城県日立市大みか町七丁目2番1号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
KURAMASHI Koji (Division BABCOCK-HITACHI K.K. 6-9, Takara-machi, Kure-sh, Hiroshima 08, 〒7378508, JP)
倉増 公治 (〒08 広島県呉市宝町6番9号 バブコック日立株式会社 呉事業所内 Hiroshima, 〒7378508, JP)
International Classes:
F23J7/00; B01D53/56; B05B1/02; F23C99/00
Attorney, Agent or Firm:
POLAIRE I.P.C. (7-1 Hatchobori 2-chome, Chuo-ku Tokyo, 32, 〒1040032, JP)
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Claims: