C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
149/11, 196/68
C10B 43/10 (2006.01) B08B 9/02 (2006.01) C10G 9/16 (2006.01)
Patent
CA 1164385
Abstract of the Disclosure: A process for the thermal decoking of cracked gas coolers for the indirect cool- ing, by means of water, of ethylene-containing cracked gases which are obtained by thermal cracking of hydro- carbons in the presence of steam in an indirectly heated tube cracking furnace, at cracked gas exit temperatures of above 750°C, in which air or an air/ oxygen mixture in heated in the tube cracking furnace to temperatures of from 600 to 1.100°C and the heated air or air/oxygen mixture is passed through the cracked gas cooler tubes which are to be decoked and at the same time a steam pressure of 90 to 150 bar is maintained on the boiling water side of the cracked gas cooler.
371505
Basf Aktiengesellschaft
Robic Robic & Associes/associates
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