Issues regarding the design of atmospheric and vacuum distillation units
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Colleagues who work on atmospheric and vacuum distillation design in design institutes: For those designing such units, at what extraction rate before the atmospheric tower can a vacuum tower be omitted from the design? Is there such an experience value? Thank you!
It mainly depends on the condition of your raw materials. Whether reduced pressure is used is not determined by the yield at normal pressure; rather, it depends on what happens to the residue. This is influenced by whether your catalyst is designed for heavy oil processing – otherwise, your catalyst won’t be able to handle the residue generated during normal processing
Oh. What about catalytic cracking, hydrocracking, and coking units in subsequent processing facilities? I just want to know a rough estimate of the experience value, without having to consider too many factors.
I think it would be better if you became familiar with the requirements for the raw materials needed in catalytic cracking, hydrocracking, and coking units; most importantly, you need to consider cost-effectiveness as well as the needs of those units
I think the original poster still doesn’t understand. It depends on the properties of your raw materials and the equipment used subsequently; only then can we determine whether pressure reduction is necessary.
The pull-out rate at normal pressure reaches 70 percent
What kind of oil is this? Its extraction rate under normal pressure can reach 70%; I’ve never seen an oil that’s this light before
At atmospheric pressure, it is primarily used to remove the naphtha, kerosene, and diesel components from crude oil； Depressurization is primarily used to remove the wax oil components; therefore, whether depressurization is applied has absolutely no impact on the extraction rate under normal pressure. It still depends on the configuration of the downstream devices
We have processed ones with a normal-pressure removal rate of 70%!