Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Patent
1975-04-28
1976-05-18
Favors, Edward G.
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
23281, 60 3952, 60278, 431115, F23J 502
Patent
active
039574180
ABSTRACT:
A method and an apparatus for performing combustion in a closed system employing recirculated exhaust gas, by the use of a combustion chamber and an exhaust gas cleaning chamber connected by an exhaust gas duct and a recirculation pipe to the combustion chamber. The exhaust gas cleaning chamber has an oxygen supply pipe, means for supplying a pressurized aqueous solution (or oxidant-absorbing pressurized aqueous solution), a carbon dioxide supplying means, and a mixing fan. A safety pressure valve is provided on said exhaust gas cleaning chamber for discharging excess exhaust gas that becomes present in this chamber to the outside of the apparatus. The oxygen supply pipe has an oxygen flow rate regulator. An oxygen content sensor is provided in the recirculation pipe leading from the cleaning chamber to the combustion chamber and this sensor is operably connected to the oxygen flow rate regulator. In this combustion method and apparatus, because the combustion chamber is closed, practically no oxidant constituents NO.sub.x or NO.sub.x plus SO.sub.x are discharged to the atmosphere, and the supply of oxygen in the recirculating exhaust gases is regulated to be about the same as that of air (about 21 vol.%). This method and apparatus can be applied to internal combustion engines as well as to external combustion devices, such as furnaces, boilers and the like.
REFERENCES:
patent: 2688360 (1954-09-01), Haynes et al.
patent: 3146821 (1964-09-01), Wuetig
patent: 3473298 (1969-10-01), Berman
patent: 3775976 (1973-12-01), Karig
patent: 3851632 (1974-12-01), Teshirogi et al.
patent: 3905773 (1975-09-01), Brooks et al.
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