Gas: heating and illuminating – Generators – Cupola
Patent
1975-08-29
1977-07-19
Lutter, Frank W.
Gas: heating and illuminating
Generators
Cupola
48210, 55 85, 55 89, 55 92, 55227, 55228, 55229, 55421, 210 73R, 210195R, 210257R, 210259, 210512M, C10J 368, B01D 4706
Patent
active
040366065
ABSTRACT:
Method and apparatus for cleaning gases, especially those generated by the pressurized gasification of coal, to remove impurities therefrom, especially tar, dust and salts, in which the gases are washed with a liquid, preferably water, in a scrubbing unit and the wash liquid is cleaned to yield a major clean liquid stream which is recycled by a circulating means to the scrubbing unit and a minor impurities concentrate stream from which the impurities are removed, in a separator unit. Preferably the wash liquid is cleaned using a plurality of hydrocyclones which may be arranged in series or in parallel. Optionally the liquid recovered from the impurities concentrate stream is returned to the scrubbing unit, although if the quantity of this liquid is equal to the quantity of liquid required for the de-salting of the wash liquid, no recovered liquid is returned to the scrubbing unit.
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Lenk Arthur
Zimmermann Fritz
Fraser Malcolm W.
Lacey David L.
Lutter Frank W.
Steag Aktiengesellschaft
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