Importance

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Abstract

A method for treating effluent from hydrothermal liquification of feedstock that contains plastic oil, pyrolysis oil, synthetic oil or hydrocarbons distillates in a plastic recycle process using supercritical water as a reaction medium into a finished liquid hydrocarbon fuel by removing impurities such as i.e. silicon, chlorides, metals, heteroatoms, etc., in a pre-treatment zone and may be passed into a feed drum or a continuous mixed settler vessel. The feed is introduced into a hydrogen atmosphere reactor. The reactor effluent is passed to a separator for extracting product mixture by addition of make-up or recycled hydrogen to the separator. The overhead product mixture is water washed to remove sour water or salt. The separator effluent is passed to a distillation section for extracting a liquid fuel product stream. A portion of the hydro processing product stream may be recycled to the feed drum or the continuous mixed settler vessel, which reduces concentration of diolefins.

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First Claim