Process for increasing yield in coking processes
A process and coking technology, applied in the field of improving the yield of the coking process, can solve the problems of reducing backwashing efficiency, filter fouling, and inability to effectively backwash the filter to remove dirt, etc.
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[0017] In embodiments, the invention is based in part on the discovery that foulants form in the separation zone or fractionation system downstream of the coking process, resulting in the separated coker gas oil containing coke particles and fouling. Fouling is a coke precursor material that is high in hydrocarbons and low in metals. Although it is a coke-like substance, it is referred to herein as "fouling" to distinguish it from the coke particles that come out of the coking process.
[0018] It has also been found that the build-up of soil is due at least in part to the presence of macromolecules in the separation zone, with molecular weights up to about 3000, typically from about 1000 to about 3000. Such macromolecules include polymers and oligomers, but here they are all oligomers, which coat the surface of the coke and form dirt particles that stick to each other and to the filters used to remove coke from gas oil . The presence of dirt particles on the filter results ...
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