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US5316659A Upgrading of bitumen asphaltenes by hot water treatment 失效
通过热水处理升级沥青沥青质

Upgrading of bitumen asphaltenes by hot water treatment
摘要:
A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water at temperatures of from 300.degree. to 425.degree. C.
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