Patent ID: 7988754
Filing Date: 2011-08-02
Classification: C10G,C10J,C10K,Y02E

Abstract:
1. A process for producing ultra clean liquid fuel, comprising the steps of: preparing a feedstock including water and coal mine waste having ash content greater than 40%; adjusting the ash content of the feedstock to about 40%; adding foundry slag as a fluxant to the feedstock to adjust the melting behavior of the ash in the feedstock; after said adding step, admitting the feedstock and a flow of oxygen into a pressurized chamber of an entrained flow gasifier in which the feedstock and oxygen are heated to produce a synthetic gas from a coal component within the feedstock and molten slag from the ash and fluxant within the feedstock; discharging the synthetic gas from the gasifier from an outlet and permitting the molten slag to freely flow through an exit port in the bottom of the gasifier; processing the synthetic gas in a slurry phase vessel having a catalyst to produce a paraffin; and producing an ultra clean liquid fuel from the paraffin.