Method for treatment of tar-bearing fuel gas

Details Method for treatment of tar-bearing fuel gas Method for treatment of tar-bearing fuel gas

1984-11-13

1986-01-07

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48190, 48210, C10K 102, C10K 110

Patent

active

045631956

ABSTRACT:
Coal tar resulting from the gasification of coal in an industrial gas producer, instead of being discarded as waste, is condensed from the hot fuel gas by a mist-like spray of water to produce a fog-like suspension of tar mixed with the fuel gas. This mixture flows to an electric precipitator where the tar is precipitated and the fuel gas and water vapor are conducted to a mixer while the tar, which has been condensed, is supplied to a tar burner where it is burned either with a stoichiometric volume of air, or less than a stoichiometric volume. The product gases from the tar burner are conducted and discharged hot into the mixer where they supply sensible heat to fuel gas and water vapor and raise the temperature of the mixture above the dew point of the tar remaining in the fuel gas, and from which the hot mixture produced is delivered to a fuel burner or gas consuming apparatus. If insufficient oxygen is supplied to the burner to completely oxidize the tar, the hot product gas from the mixer will contain caloric fuel values such as carbon monoxide and hydrogen which supplement the gas in the mixer with caloric fuel values in addition to sensible heat.

REFERENCES:
patent: 1130214 (1915-03-01), Steere
patent: 1944523 (1934-01-01), Miller
patent: 3998608 (1976-12-01), Livemore
patent: 4175929 (1979-11-01), Frumerman et al.

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