Patent ID: 8673181
Filing Date: 2014-03-18
Classification: C10J

Abstract:
1. A method for starting a gasifier, comprising: feeding a heated start-up medium to a gasifier operating at a first temperature; transferring heat from the heated start-up medium to the gasifier to increase the temperature of the gasifier from the first temperature to an intermediate temperature sufficient to auto-ignite a start-up fuel; feeding a start-up fuel and an oxidant to the gasifier after the temperature within the gasifier is increased to the intermediate temperature: combusting at least a portion of the start-up fuel within the gasifier to produce a combustion gas; transferring heat from the combustion gas to the gasifier to increase the temperature of the gasifier to an operating temperature, wherein the operating temperature is sufficient to gasify at least a portion of a hydrocarbon feedstock; recovering a cooled start-up medium from the gasifier; re-heating at least a portion of the cooled start-up medium to produce the heated start-up medium; and recycling the heated start-up medium to the gasifier.