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Abstract

An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon/energy recovery (RFCER) system. The RFCER comprises a heat integration system between an electrolysis unit and a thermal desalination unit. The thermal desalination unit is configured to receive seawater and a first amount of thermal energy and to produce a desalinated water stream and a brine effluent stream. The electrolysis unit is configured to receive a demineralized water stream and an amount of electrical energy to produce a hydrogen stream, an oxygen stream, and a second amount of thermal energy, wherein the second amount of thermal energy is absorbed by a second low temperature heat transfer fluid stream to produce a second high temperature heat transfer fluid stream. A fluidly segregated piping system containing a heat transfer fluid is configured to withdraw heat from the electrolysis unit and deliver heat to the thermal desalination unit. A control system manages flows of the heat transfer fluid between the electrolysis unit and the thermal desalination unit, the addition of heat to the flow to the thermal desalination unit, and/or the removal of heat from the flow to the electrolysis unit.

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First Claim