The problem of solvent contamination in solvent deasphalting units
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Can a solvent deasphalting unit using C4 solvent process normal residue over the long term? Will a small amount of diesel in the regular slag cause contamination to the solvent?
It’s possible; the commissioning cycle for mature devices is also quite long； How much is a small amount of diesel? What is the initial boiling point?
No, because of the principle of like dissolves like, a solvent regeneration facility is necessary.
If there are more light components, it definitely won’t work.
When diesel is contaminated with solvents, a mixed phase is formed
I would like to ask where there are solvent deasphalting units that use atmospheric residue as raw material? How is it running now? I’ve had an idea recently; I want to see how it works!
Around 2010, the solvent deasphalting unit of Guangxi Dongyou Asphalt Technology Co., Ltd. was in normal operation for 3 years, using atmospheric residue as raw material. It’s stopped now; we can discuss it in detail. The rest is unclear.