Solvent deasphalting feedstock
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Can heavy oil with a initial boiling point of 300 degrees be used as a feedstock in a solvent extraction unit? Does it have an effect on the solvent?
This post was last edited by ai444099439 on 2015-6-3 at 11:02. I believe that using the oil from this fraction as a raw material for solvent deasphalting would present considerable operational challenges. The fraction with a initial boiling point of 300°C corresponds to the fractions obtained after the normal distillation process; it contains a large proportion of light fractions, which are ideal components for solvent deasphalting. This makes the operation very difficult, and even if attempts are made, there will be many challenges, such as selecting the appropriate solvent ratio, recovering the solvent, and managing the energy consumption of the equipment! I feel that if you want to do it, it’s best to simulate it in advance and think of possible problems ahead of time; otherwise, the difficulty will definitely be high! If the oil from this fraction goes into a solvent deasphalting system rather than being used as raw material, there should be no major problems. For example, during the startup phase, diesel is used to circulate through the asphalt system in order to ensure smooth operation of the asphalt delivery system and to maintain the appropriate temperature So it depends on what you do regarding your question If it is to be used as a raw material, I think the operation will be quite difficult, so careful selection is necessary; but if it is implemented only during abnormal phases, there is no problem!
It is used as a raw material; the light components are miscible with solvents, which can lead to solvent contamination. However, are there any quantitative or qualitative criteria for identifying these light components? For example, what is the boiling point threshold below which something is considered a light component? At what level of light component content does it cause contamination of the solvent?
It depends on what solvents you are using. It should be miscible with the solvent; it is best to conduct experiments first before proceeding with production.
It should work as a starting oil, but long-term use will definitely contaminate the solvent.