Fractionation of Fischer-Tropsch synthesis oil
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This post was last edited by liaifeng on 2018-9-3 at 11:20. The products of Fischer-Tropsch synthesis are quite complex; if each component has to be separated individually, the energy consumption and costs will certainly be very high. What are people’s views on the utilization of these Fischer-Tropsch synthesis products? Is it to first fractionate out a fraction with a certain carbon count, and then synthesize high-value-added products through certain reactions? Is it feasible to fractionate by distillation fractions? For example, C5-C10 (naphtha), C11-C14 (aviation fuel), C13–C20 (diesel), C20-C40 (reduced wax oil), etc., which contain about 30% olefins; will they cause coking or chain scission? Different from crude oil.
This is similar to the fractionation in catalytic cracking; it just depends on how it is carried out
Direct hydrogenation. You can’t have both the fish and its fins
High-vacuum precision distillation is required, and it needs to be protected to prevent decomposition
If the distillation temperature is high, coking will definitely occur. It should be similar to the processing of crude oil: first, carry out atmospheric and vacuum distillation, and then treat the light and heavy fractions separately. If there are olefins or alkynes in the reformed fraction, hydrogenation should be carried out first.
If producing fuel oil, the hydrogenation route should be used
It still relies on hydrogenation, full-range hydrogenation
The current processing method involves direct hydrogenation followed by distillation