Process for the production thermally converted light products and electricity
AssigneeShell Oil Company
InventorsJacobus Henricus Gerardus Beurskens, Johannes Didericus De Graaf, Anthony Malcolm Rigby
Life of this patent
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Abstract
Process for the production of thermally converted light products from residual feedstock and electricity from syngas obtained from thermal conversion residue as feedstock, in which process flue gas exiting from the electricity producing unit is fed through a heat recovery unit providing at least part of the heat required in the thermal conversion process.
Claims25
A process for a thermal conversion of a residual feedstock to produce electricity and a thermally converted light product, said process comprises:
- obtaining a syngas from a thermal conversion process for said thermal conversion of said residual feedstock;
- passing a flue gas exiting from an electricity producing unit through a heat recovery unit of said thermal conversion process to thereby provide at least 50 percent of the heat required for said thermal conversion process.
A process for a thermal conversion of a residual feedstock to produce electricity and a thermally converted light product, said process comprises:
- passing said residual feedstock to a heat recovery unit whereby said residual feedstock is thermally converted to yield a partially converted feedstock;
- passing said partially converted feedstock to a cyclone for providing a first bottom stream and a top stream;
- passing said first bottom stream and said top stream to a system for providing a syngas, wherein said system includes a distillation unit, a vacuum flasher and a gasification unit;
- and passing said syngas to an electricity production unit whereby electricity is yielded to an electricity grid and whereby a flue gas is yielded from said electricity unit.
A process for a thermal conversion of a residual feedstock to produce electricity and a thermally converted light product, said process comprises:
- passing said residual feedstock through a heat recovery system, thereby allowing an initial conversion of said residual feedstock to a partially converted feedstock;
- passing said partially converted feedstock through a cyclone from which a first bottom stream and a top stream are recovered;
- sending said top stream to a distillation unit by which a gasoline fraction, a gas oil fraction, a thermal conversion residue and a second bottom stream are obtained;
- subjecting at least part of said thermal conversion residue to a gasification process unit to obtain a syngas;
- sending said syngas to a gas turbine to produce electricity whilst the flue gas exiting said gas turbine is passed through said heat recovery system to recover heat which is used at least partly for said initial conversion of said residual feedstock.
A process, comprising:
- passing a residual feedstock to a heat recovery unit whereby at least a portion of said residual feedstock is thermally converted to yield a partially converted feedstock;
- passing said partially converted feedstock to a system for processing said partially converted feedstock to yield electricity and a fluegas;
- and
- passing to said heat recovery unit said flue gas which serves as a heating medium.
A process, comprising:
- passing a residual feedstock to a heat recovery unit whereby at least a portion of said residual feedstock is thermally converted to yield a partially converted feedstock comprising light products and a thermal residue;
- separating said light products and said thermal residue of said partially converted feedstock to yield at least a separated thermal residue;
- passing said separated thermal residue to a gasification unit whereby said separated thermal residue is converted into a syngas;
- passing said syngas to an electricity production unit whereby electricity is yielded to an electricity grid, and whereby a fluegas is yielded from said electricity production unit;
- and
- passing said fluegas to said heat recovery unit in which said fluegas is used as a heating medium.
Dependencies are inferred from the claim text.