Process for treating waste gases containing ClF.sub.3

Details Process for treating waste gases containing ClF.sub.3 Process for treating waste gases containing ClF.sub.3

1991-01-29

1992-03-10

Niebling, John

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Reciprocating ram feeding to rotating trap chamber

423210, 423241, 55 71, B01D 5334, C01D 700

Patent

active

050948253

ABSTRACT:
Waste gases containing ClF.sub.3 are treated by bringing them into contact with iron oxide substantially composed of a ferric oxide (Fe.sub.2 O.sub.3) at a linear velocity of about 10-200 cm/min at ordinary temperatures, or further into contact with an alkali agent at the same linear velocity and temperatures as the above, whereby the content of ClF.sub.3 can be reduced below the permissible level despite simultaneous emission of acidic gases, and yet which is capable of removing the concomitant acidic gases in an effective manner.

REFERENCES:
patent: 3469936 (1969-09-01), Chilenskas et al.
patent: 4201751 (1980-05-01), Holter et al.
patent: 4673558 (1987-06-01), Senoue et al.
patent: 4740982 (1984-04-01), Hakuta et al.
patent: 4971880 (1990-11-01), Hotomi et al.
TID-4500-15th Ed. K-1416 (1960), Safehandling of Chlorine Triflouride and the Chemistry of the Chlorine Oxides and Oxyflourides, R. Lynn Farrar, Jr.

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