Method for the separation of impurities from a hot synthesis gas

Details Method for the separation of impurities from a hot synthesis gas Method for the separation of impurities from a hot synthesis gas

1996-08-26

1998-02-10

Smith, Duane S.

Gas separation: processes

Filtering

55523, 422255, 544203, C22C 104, B01D 4600

Patent

active

057164290

ABSTRACT:
Disclosed is an improved method for separating impurities from a hot synthesis gas mixture which is obtained in the preparation of melamine and urea. The improved separation is achieved by use of filters made of sintered, essentially pure chromium, molybdenum, tungsten, or a mixture of any of these elements.

REFERENCES:
patent: 2768144 (1956-10-01), Sundback
patent: 3377350 (1968-04-01), Watson et al.
patent: 4591644 (1986-05-01), Leerschool et al.
patent: 4758272 (1988-07-01), Pierotti et al.
patent: 5497620 (1996-03-01), Stobbe
patent: 5505757 (1996-04-01), Ishii

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