Closure for a gas offtake pipe

Details Closure for a gas offtake pipe Closure for a gas offtake pipe

1985-08-05

1987-05-19

Richman, Barry S.

Distillation: apparatus

Apparatus

Elements

202269, C10B 2700

Patent

active

046665595

ABSTRACT:
A closure is provided for the top opening of a circular or oval cross section gas offtake pipe provided on the roof for a coke oven chamber to conduct gasses from the chamber to a gas main. The closure includes a domed top cover and an inner cover. The peripheral edge of the top cover dips into a water seal provided on the top edge of the gas offtake pipe when the cover is in a closed position. The edge of the inner cover engages a peripheral top sealing edge of an annular wall which is disposed at a distance from the water seal inwardly thereof. The top seal edge of the annular wall is disposed above a base of the water seal.

REFERENCES:
patent: 4168208 (1979-09-01), Althoff et al.
patent: 4197164 (1980-04-01), Pries
patent: 4239602 (1980-12-01), La Bate
patent: 4296938 (1981-10-01), Offermann et al.
patent: 4379023 (1983-04-01), Stratmann et al.

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