C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/72
C10G 9/26 (2006.01) C10B 55/00 (2006.01) C10B 57/00 (2006.01)
Patent
CA 1154707
4016 COKE PRODUCTION Abstract of the Disclosure In the delayed coking of a coking feedstock wherein the feedstock is continuously heated in a coking heater and introduced into a coke drum, the heater is operated to provide a coke drum temperature of from 415° to 455°C, and, after filling of the drum to the desired level, feed- stock introduction is discontinued and the coke drum contents are heated at a temperature of 450°C to 500°C, and which heating temperature is at least 10°C greater than the coking temperature, by passing a non-coking vapor through the con- tents of the drum to reduce the volatile combustible matter content to a value of 4% to 10% by weight and thereby re- duce the CTE of the formed coke. The process is applicable to the production of needle coke from various kinds of feed- stocks, in particular from a petroleum feedstock wherein the feedstock is initially treated by thermal soaking in the pre- sence of sulfur, followed by thermal cracking to increase the aromaticity. Noncrystalline substances may be removed prior to coking to further improve the process.
391565
Bennett Thomas M.
Furukawa Kenji
Nakaniwa Mikio
Ogren Dennis F.
Simone Andre A.
Bereskin & Parr
Lummus Company (the)
Maruzen Petrochemical Co. Ltd.
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