Process for dewatering quenched slag

Details Process for dewatering quenched slag Process for dewatering quenched slag

1991-12-15

1993-02-02

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48210, 48DIG2, 110165R, 110171, C10J 308

Patent

active

051834782

ABSTRACT:
Quenched slag discharged from a gasification process such as a coal gasification process can be continually dewatered and removed without disrupting operations by alternately discharging the quenched slag from means such as lockhoppers and directing the slag to one of two disengagement zones symmetrically arranged on either side of a clear water pit. The slag settles along a sloping active disengagement zone, allowing water to separate and drain into an adjacent slag pit. The accumulated water is drained into the clear water pit through vertically-spaced drains in the walls separating the slag pits from the clear water pit and pumped away after solids have settled. After an active disengagement zone-slag pit is used for a period of time, perhaps 24 hours, the discharge of slag is redirected to the other such area while dewatered slag is removed from the first slag pit.

REFERENCES:
patent: 2118157 (1938-05-01), Camp
patent: 3607157 (1971-09-01), Schlinger et al.
patent: 3950146 (1976-04-01), Funk
patent: 3962978 (1976-06-01), Bosman
patent: 3994702 (1976-11-01), Schweimanns et al.
patent: 4227469 (1980-10-01), Collura
patent: 4838898 (1989-06-01), Mifflin et al.

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