Title:
【発明の名称】原動機運転方法及び該運転方法を用いる燃焼システム
Document Type and Number:
Japanese Patent JP3336206
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of operating a prime-mover which can perform combustion with a high degree of efficiency of power generation and with low NOx, and to operate a high temperature heating furnace with the use of oxygen combustion. SOLUTION: In a combustion system comprising an oxygen producing device 1, a high temperature heating furnace 2 and a prime-mover 3 (stoichiometric air-fuel ration combustion engine), oxygen generated from the oxygen producing device 1 is used as fuel for the high temperature heating furnace 2, and air by-produced during the production of oxygen and containing a less volume of oxygen is used as intake-air for the prime-mover 3 so as to drive the prime-mover. With the use of air containing a less volume of oxygen for the intake- air, since the specific heat ratio κ of combustion gas becomes larger even with the combustion having an air-fuel ratio which is a stoichiometric air-fuel ratio of 1, and since the engine compression ratio ε can be increased, the thermal efficiency becomes higher. The burnt waste gas is the same as the exhaust gas having a stoichiometric air-fuel ratio, and accordingly, ternary catalyst can be used for processing exhaust gas, thereby it is possible to reduce the volume of NOx emitted from the prime-mover. By using a power generated by the prime- mover itself as a power for operating the oxygen producing device, the production cost of oxygen can be reduced, and the melting cost in the high temperature furnace can be reduced.
Inventors:
Wataru Fujisaki
Kazuhisa Okamoto
Teruhiro Sakurai
Kazuhisa Okamoto
Teruhiro Sakurai
Application Number:
JP27239096A
Publication Date:
October 21, 2002
Filing Date:
October 15, 1996
Export Citation:
Assignee:
Tokyo Gas Co., Ltd.
International Classes:
F02B75/00; F01K23/06; F02B47/06; F02C6/00; F02G5/00; F02M33/00; (IPC1-7): F02B47/06; F01K23/06; F02B75/00; F02C6/00; F02G5/00; F02M33/00
Domestic Patent References:
| JP4246208A | ||||
| JP867907A | ||||
| JP218608U |
Attorney, Agent or Firm:
Yusuke Hiraki (1 person outside)