Direct cooling crystallization

Details Direct cooling crystallization Direct cooling crystallization

1982-09-27

1984-06-05

Sever, Frank

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

E01D 902

Patent

active

044526210

ABSTRACT:
A crystallization process is improved by employing direct contact cooling whereby a volatile liquid is vaporized to provide the cooling necessary to effect the crystallization. The effluent vapors of the volatile liquid may be liquified and recycled for reuse by manipulation of temperature and/or pressure. In one embodiment, durene is crystallized from a C.sub.10.sup.+ aromatics fraction using liquified n-butane as the coolant.

REFERENCES:
patent: 2078992 (1937-05-01), Banks et al.

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