Title:
ストーカ式焼却炉の燃焼方法及びストーカ式焼却炉
Document Type and Number:
Japanese Patent JP3582710
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the emitting amount of an exhaust gas from a stoker type incinerator, completely burn unburned gas or the like by stirring and mixing wastes while keeping a combustion chamber constantly in an optimal condition irrespective of the kinds, properties or the like of the wastes, and suppress emission of NOx or the like. SOLUTION: A stoker type incinerator 1 is provided with a stoker 4, a primary combustion chamber 7 and a secondary combustion chamber 8. The ratio of supply rate of primary combustion air A1 which is supplied from beneath the stoker 4 to that of a primary air is rendered to be 1.2 or less. A combustion gas G' which is present at the downstream side of the stoker 4 and above a stoker 4c is drawn out of the incinerator in order to render the combustion chamber 7 to have a reducing atmosphere so that the gas G' is not allowed to flow above the upstream side of the stoker 4. The drawn gas G' is blown to the combustion chamber which is located upstream of a position where secondary combustion air A2 is blown, followed by stirring and mixing in the combustion chamber. Thus, the inside of the combustion chamber which is located upstream of the position where the combustion air A2 is blown, is rendered to be an atmosphere in which a composition distribution and temperature of a combustion gas G are uniformed. Thereafter, the combustion air A2 is blown to the combustion chamber 8 so as to render the total air ratio to be around 1.3, and thus the unburned gas and unburned substances are burned completely.
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Inventors:
Shizuo Kataoka
Ryoji Samejima
Tomonori Aso
Ryoji Samejima
Tomonori Aso
Application Number:
JP2000081077A
Publication Date:
October 27, 2004
Filing Date:
March 23, 2000
Export Citation:
Assignee:
Takuma Co., Ltd.
International Classes:
F23L15/00; F23G5/00; F23G5/16; F23G5/50; (IPC1-7): F23G5/16; F23G5/00; F23G5/50
Domestic Patent References:
| JP63297910A | ||||
| JP11294740A | ||||
| JP5060313A |
Other References:
Low-NOx Incineration of Municipal Solid Waste in Grate Systems,Second International Symposium on Incineration and Flue Gas Treatment Technology,英国,Sheffield University,1999年 7月 4日,Session 1,p.1-9,ABB Environmental Systems
第7回環境工学総合シンポジウム’97講演論文集/ごみ焼却炉の燃焼性能改善条件,日本,日本機械学会,1997年 7月14日,p.204-207,(平成15年6月26日付刊行物等提出書の刊行物3,平成16年6月1日付刊行物等提出書の刊行物1)
第7回環境工学総合シンポジウム’97講演論文集/ごみ焼却炉内の熱流体解析,日本,日本機械学会,1997年 7月14日,p.226-228,(平成15年6月26日付刊行物等提出書の刊行物5)
第7回環境工学総合シンポジウム’97講演論文集/ごみ焼却炉の燃焼性能改善条件,日本,日本機械学会,1997年 7月14日,p.204-207,(平成15年6月26日付刊行物等提出書の刊行物3,平成16年6月1日付刊行物等提出書の刊行物1)
第7回環境工学総合シンポジウム’97講演論文集/ごみ焼却炉内の熱流体解析,日本,日本機械学会,1997年 7月14日,p.226-228,(平成15年6月26日付刊行物等提出書の刊行物5)
Attorney, Agent or Firm:
Takeshi Sugimoto
Hisami Miki
Hisami Miki