Multizone co-gasification
AssigneeGeneral Electric Company
InventorsVladimir Zamansky, Vitali Lissianski, Boris Nikolaevich Eiteneer, Wei Wei, Ravichandra Srinivasa Jupudi, Ramanathan Subramanian
Life of this patent
Estimating the term…
Abstract
A gasifier is provided gasify multiple fuels. The gasifier is configured to include a first gasification zone for gasifying a high-calorific-value feedstock with an oxidant. The gasifier is configured to substantially consume the oxidant within the first gasification zone. The gasifier further includes a second gasification zone for gasifying a low-calorific-value, high-oxygen-content feedstock. The high-calorific-value fuel may be coal and the low-calorific-value fuel may be biomass.
Claims19
A gasifier comprising:
- a first gasification zone for gasifying a high-calorific-value feedstock with an oxidant, which oxidant is substantially consumed within said first gasification zone;
- and
- a second gasification zone for gasifying a low-calorific-value, high-oxygen-content feedstock.
A multi-fuel gasifier comprising:
- a first gasification zone for gasification of coal comprising at least one coal injector and at least one oxidant injector, wherein said first gasification zone is configured to substantially consume oxidant injected through said at least one oxidant injector during gasification;
- and
- a second gasification zone for gasification of a biomass using oxygen content from said biomass.
A gasifier comprising:
- at least one injector for injecting a high-calorific-value (HCV) feedstock into a first zone of said gasifier;
- said first zone configured to devolatilize a substantial quantity of said high-calorific-value feedstock to form volatile matter and a char (HCV char);
- and
- at least one injector configured to inject a low-calorific-value, high-oxygen-content feedstock, into a second zone of said gasifier, said second zone configured to produce oxygen containing compounds by devolatilizing said low-calorific-value, high-oxygen-content feedstock and gasifying the char produced from said high-calorific-value feedstock using said oxygen containing compounds.
Dependencies are inferred from the claim text.