What are the advantages and disadvantages of a 0 cycle ratio in delayed coking?
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Today, coking tends to use a low circulation ratio; in some cases, the circulation ratio is even 0. What are the advantages and disadvantages of this?
A lower recycle ratio will result in an increased liquid yield, an enhanced processing capacity of the unit, and a longer coking cycle; however, the quality of the heavy wax oil will decline. It is necessary to consider what to do with this product later. If the properties of the raw material are poor, a low recycle ratio may lead to the formation of pellet coke, and there will also be significant changes in the composition of the products