Method and device for treating a synthesis gas from a biomass gasification step
AssigneeGdf Suez
InventorsBernard Marchand, Yilmaz Kara, Frédéric Legrand
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Abstract
A method for treating a synthesis gas from a gasification step. The synthesis gas is cooled to condense heavy organic impurities and water. At the end of the cooling step, light organic impurities and inorganic impurities are adsorped by at least one adsorption bed. The water and heavy tars are separated by decantation from the step of cooling the synthesis gas. At least one adsorption bed is regenerated by temperature-modulated or pressure-modulated desorption.
Claims17
A method for treating a synthesis gas from a gasification step, which comprises the steps of:
- cooling the synthesis gas to condense heavy organic impurities and water;
- adsorption, on exiting the cooling step, of light organic impurities and inorganic impurities by at least one adsorption bed;
- separating, by decantation, the water and heavy tars from the synthesis gas;
- and
- regenerating at least one adsorption bed by a temperature-modulated desorption of injecting a hot fluid in each adsorption bed.
A device to treat a synthesis gas from a gasification process, comprising:
- a cooler to cool the synthesis gas to condense heavy organic impurities and water;
- at least one adsorpter, on output from the cooler, to adsorp light organic impurities and inorganic impurities, said at least one adsorpter comprising at least one adsorption bed connected to the output of the cooler;
- a separator comprising a decanter to decant the water and heavy tars, output from the cooler, from the synthesis gas;
- and
- a regenerator to regenerate at least one adsorption bed by a temperature-modulated desorption comprising an injector to inject a hot fluid in each adsorption bed.
Dependencies are inferred from the claim text.