Delayed coking process for producing free-flowing shot coke

Details Delayed coking process for producing free-flowing shot coke Delayed coking process for producing free-flowing shot coke

C - Chemistry, Metallurgy

10

G

C10G 9/00 (2006.01) C10B 55/00 (2006.01)

Patent

CA 2522268

A delayed coking process for making substantially free-flowing coke, preferably shot coke. A coker feedstock, such as a vacuum residuum, is heated in a heating zone to coking temperatures then conducted to a coking zone wherein volatiles are collected overhead and coke is formed. A metals- containing, or metals-free additive is added to the feedstock prior to it being heated in the heating zone, prior to its being conducted to the coking zone, or both.

L'invention concerne un procédé de cokéfaction retardée destiné à la production de coke à écoulement libre et de préférence de coke anisotrope en grenaille. Ce procédé consiste à chauffer une charge d'une unité de cokéfaction, telle qu'un résidu sous vide, dans une zone de chauffage, jusqu'à des températures de cokéfaction, puis à conduire la charge vers une zone de cokéfaction dans laquelle les substances volatiles sont collectées et le coke est formé. Le procédé consiste également à ajouter un additif contenant des métaux ou exempt de métaux dans la charge, avant que celle-ci ne soit chauffée dans la zone de chauffage et/ou avant qu'elle ne soit conduite vers la zone de cokéfaction.

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