Gasification of densified textiles and solid fossil fuels to produce organic compounds
AssigneeEastman Chemical Company
InventorsWilliam Lewis Trapp, Justin William Murphy, Nathan Mitchell West
Life of this patent
Estimating the term…
Abstract
Densified textile aggregates are co-fed with a fuel into a partial oxidation gasifier. High solids concentrations in the feedstock composition can be obtained without significant impact on the feedstock composition stability and pumpability. A consistent quality of syngas can be continuously produced, including generation of carbon dioxide and a carbon monoxide/hydrogen ratio while stably operating the gasifier and avoiding the high tar generation of fluidized bed or fixed bed waste gasifiers and without impacting the operations of the gasifier. The syngas quality, composition, and throughput are suitable for produce a wide range of chemicals.
Claims21
A process for the production of syngas comprising:
- a. charging an oxidant and a feedstock composition to a gasification zone within a gasifier, said feedstock composition comprising a solid fossil fuel and less than 5 wt. % densified textiles based on the weights of solids in the feedstock composition;
- b. gasifying the feedstock composition together with the oxidant in a gasification zone to produce a syngas composition;
- and
- c. discharging at least a portion of the syngas composition from the gasifier;
- and producing an organic compound from said syngas composition
- wherein the gasifier is an entrained flow gasifier.
A process for the production of syngas comprising:
- a. charging an oxidant and a feedstock composition to a gasification zone within a gasifier, said feedstock composition comprising a solid fossil fuel and 90 wt. % of the densified textiles have a particle size in the largest dimension of not more than 2 mm;
- b. gasifying the feedstock composition together with the oxidant in a gasification zone to produce a syngas composition;
- and
- c. discharging at least a portion of the syngas composition from the gasifier;
- and producing an organic compound from said syngas composition
- wherein the gasifier is an entrained flow gasifier.
A process for the production of syngas comprising:
- a. charging an oxidant and a feedstock slurry composition to a gasification zone within a gasifier, said feedstock slurry composition comprising densified textiles, a solid fossil fuel, and water, wherein either (i) the amount of densified textiles is less than 5 wt. % based on the weight of the solids in the feedstock slurry or (ii) 90 wt. % of the densified textiles have a particle size in the largest dimension of not more than 2 mm;
- b. gasifying the feedstock composition together with the oxidant in a gasification zone to produce a syngas composition;
- and
- c. discharging at least a portion of the syngas composition from the gasifier, and producing an organic compound from said syngas composition
- wherein at least one of the following conditions is present:
- (i) gasification within the gasification zone is conducted at a temperature of at least 1000° C., or
- (ii) the pressure within the gasification zone greater than 2.7 MPa, or
- (iii) the feedstock composition is a slurry, or
- (iv) no steam is introduced to the gasifier that flows into the gasification zone, or
- (v) the densified textiles are pre-ground such that at least 90% of the particles have a particle size of less than 2 mm, or
- (vi) the tar yield is less than 4 wt. %, or
- (vii) the gasifier contains no membrane wall in the gasification zone, or
- (viii) a combination of two or more of the above conditions.
21-51. (canceled)
Dependencies are inferred from the claim text.