FIELD: chemical industry. SUBSTANCE: invention describes improved method of separating admixtures from hot mixtures of synthesis gases by means of filters, mixture resulting from production of melamine from urea. The process uses filters made of sintered substantially pure chromium, molybdenum, tungsten or mixtures of elements. EFFECT: increased recovery of melamine of high purity. 4 cl, 1 ex, 2 tbl
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|---|---|---|---|
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|
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| METHOD OF CONTINUOUS PREPARATION OF MIXTURE OF CYCLOALKANOL, CYCLOALKANOL AND CYCLOALKYL HYDROPEROXIDE | 1993 |
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