Patent ID: 8475552
Filing Date: 2013-07-02
Classification: C10J,C10L,Y02E,Y02P

Abstract:
1. A system, comprising: a posimetric pump configured to increase pressure of a feedstock to provide a pressurized feedstock, wherein the posimetric pump comprises: a fixed bed gasifier configured to gasify the pressurized feedstock, wherein the fixed bed gasifier comprises an enclosure, a feedstock inlet configured to receive the pressurized feedstock, at least one agent inlet configured to receive at least one gasification agent, a syngas outlet configured to output a syngas, an ash outlet configured to output ash, and a fixed bed configured to support the pressurized feedstock while allowing flow of the at least one gasification agent through the pressurized feedstock; first and second feedstock conveyors configured to deliver first and second feedstocks as the feedstock to the posimetric pump; at least one transducer disposed in the posimetric pump or the fixed bed gasifier; and a controller programmed to vary a ratio of the first feedstock relative to the second feedstock into the posimetric pump to adjust a moisture content or a heating value of mixed feedstock in the posimetric pump based on feedback received from the at least one transducer, wherein the feedback comprises the heating value of the mixed feedstock, a temperature, a pressure, an indicator of performance of the fixed bed gasifier, or a measurement of the moisture content of the mixed feedstock in the fixed bed gasifier.