Process for separating off poisonous volatile chemical compounds

Details Process for separating off poisonous volatile chemical compounds Process for separating off poisonous volatile chemical compounds

1988-10-28

1992-03-03

Straub, Gary P.

Chemistry of inorganic compounds

Miscellaneous process

422288, 266157, 55267, C21B 722, C21C 538

Patent

active

050931032

ABSTRACT:
A process for separating off poisonous volatile chemical compounds from a mixture (7) of solid particles having a particle size of up to 200 .mu.m, the mixture being brought continuously or intermittently at an average rate of 5.degree. to 200.degree. C./min in zones of progressively increasing temperature up to 1350.degree. C. and the poisonous chemical compounds being evaporated and forced to leave the reaction space (6). The poisonous compounds are subsequently condensed and discharged. The non-evaporated residue is gradually melted, and the melt (8) is continuously or intermittently discharged from the reaction space (6) and solidified. The particles carried over into the gas phase are preferably retained by a hot gas filter, liquefied and passed into the melt.

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Patent Abstract of Japan, vol. 10, No. 31 (C-327) (2088), Feb. 6, 1986 & JP 60-184643 Sep. 20, 1985 Treating Device for Dust and Sludge, Masao Tomari.

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