Title:
COMBUSTION SYSTEM AND METHOD FOR COOPERATIVE CONTROL OF IN-FURNACE DESULPHURIZATION AND DENITRATION IN CFB BOILER
Document Type and Number:
WIPO Patent Application WO/2016/161822
Kind Code:
A1
Abstract:
Provided are a combustion system and method for cooperative control of in-furnace desulphurization and denitration in a CFB boiler. The combustion system comprises a hearth (1), a coal feeding port (3), a primary air chamber (5), a secondary air box (4), a secondary air pipe (8), a cyclone separator (2), a material returning mechanism (13) and material returning pipes (6, 7) for connecting the material returning mechanism (13) with the hearth (1). The material returning pipes (6, 7) include an upper-layer material returning pipe (7) and a lower-layer material returning pipe (6), the tail end of the upper-layer material returning pipe (7) is higher than that of the lower-layer material returning pipe (6); the upper-layer material returning pipe (7) is connected with the material returning mechanism (13) and the dilute phase zone of the hearth (1), and the lower-layer material returning pipe (6) is connected with the material returning mechanism (13) and the dense phase zone of the hearth (1); and a charging port (12) is provided on the upper-layer material returning pipe (7). The method comprises: a desulphurizing agent is introduced from the charging port (12) on the upper-layer material returning pipe (7), and the cyclone separator (2) separates high-temperature solid materials in the hearth (1) from the flue gas, wherein a part of the high-temperature solid materials are sent into the dilute phase zone of the hearth (1) via the upper-layer material returning pipe (7); and a part of the high-temperature solid materials are sent into the dense phase zone of the hearth (1) via the lower-layer material returning pipe (6).
Inventors:
LIU XINGLEI (CN)
GONG LIUSHENG (CN)
ZHENG XINGSHENG (CN)
GUO QIANG (CN)
ZHOU QI (CN)
YUE PENGFEI (CN)
YANG XIAOLIN (CN)
GONG LIUSHENG (CN)
ZHENG XINGSHENG (CN)
GUO QIANG (CN)
ZHOU QI (CN)
YUE PENGFEI (CN)
YANG XIAOLIN (CN)
Application Number:
PCT/CN2015/099446
Publication Date:
October 13, 2016
Filing Date:
December 29, 2015
Export Citation:
Assignee:
DONGFANG BOILER GROUP CO LTD (CN)
International Classes:
F23C10/00
Foreign References:
| CN1300638A | 2001-06-27 | |||
| CN102266718A | 2011-12-07 | |||
| CN102865574A | 2013-01-09 | |||
| JP2004286387A | 2004-10-14 | |||
| CN204554803U | 2015-08-12 | |||
| CN104748108A | 2015-07-01 |
Attorney, Agent or Firm:
CHENGDU THD INTELLECTUAL PROPERTY CO., LTD. (CN)
成都泰合道知识产权代理有限公司 (CN)
成都泰合道知识产权代理有限公司 (CN)
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