Method and equipment for separation of solids from gaseous mixtu

Details Method and equipment for separation of solids from gaseous mixtu Method and equipment for separation of solids from gaseous mixtu

1986-02-27

1987-09-29

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55267, 55315, 55429, 55434, 549250, 260704, B01D 5908

Patent

active

046966838

ABSTRACT:
The invention solves a method and an apparatus for the separation of solids from gaseous mixtures especially the separation of phthalic anhydride after its desublimation from mixtures with vapours of sublimable substances, steam, air or inert gases, which originate at sublimation refining or at catalytic production of phthalic anhydride by air oxidation of naphthalene or o-xylene.
The flakes of phthalic anhydride, which originated after the decrease of temperature in the desublimator space were agglomerated and compacted due to the increase of velocity of gaseous mixture in contracted cross-section of the separator. The formed agglomerates are separated from the gaseous mixture and collected in a receiver well. From the well the agglomerates are transported by a conveyor or they are continuously melted. The melt formed outlets through a siphon. The rest 1 to 5% of phthalic anhydride is separated from gaseous mixture in a filter from wire net and by gradual melting is introduced into the receiver well.

REFERENCES:
patent: 2446181 (1948-08-01), Kraus
patent: 2455314 (1948-11-01), Pietsch
patent: 2692657 (1954-10-01), Barton
patent: 4080182 (1978-03-01), Vitrovec et al.
patent: 4246012 (1981-01-01), Khopkov
patent: 4252545 (1981-02-01), Haferkorn
patent: 4528006 (1985-07-01), Vitrovec et al.

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