Combustion – Process of combustion or burner operation – Heating feed
Patent
1981-03-09
1983-07-12
Favors, Edward G.
Combustion
Process of combustion or burner operation
Heating feed
60 39183, 431215, F23D 1144
Patent
active
043928099
ABSTRACT:
A method and plant for recovering heat from smoke gases in combustion plants, whereat the combustion air is compressed prior to being supplied to the combustion chamber of the plant. The compressed smoke gases from the combustion chamber are cooled, at a pressure which exceeds 1.5 atmospheres, to a temperature beneath 100.degree. C., preferably beneath 80.degree. C., and are then caused to expand in a turbine, whereat the energy released by said expansion is utilized for compressing the air of combustion.
The plant comprises one or more compressors (2) which are arranged upstream of the combustion chamber (6) of the combustion plant and which compress the air of combustion; and a turbine (9) arranged downstream of the combustion chamber or chambers (6) for expanding the compressed smoke gases. The turbine (9) is mechanically connected to an associated compressor (2), so that the kinetic energy developed by the turbine through expansion of the smoke-gases is utilized in the compressor (2) for compressing the air of combustion. Connected between the last combustion chamber (6) in the system and the turbine (9) is a smoke-gas cooler (7,8) which works at a smoke-gas pressure exceeding 1.5 atmospheres and in which the smoke gases are cooled to a temperature which is lower than 100.degree. C., preferably lower than 80.degree. C.
REFERENCES:
patent: 2478851 (1949-08-01), Traupel
patent: 3871172 (1975-03-01), Villiers-Fisher et al.
patent: 4043120 (1977-08-01), Huffeins
Carlqvist Stig G.
Tieberg Lars A.
Favors Edward G.
Razzano Pasquale A.
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