| 摘要 |
<p>Apparatus and method for gasification of feedstock material are disclosed. The apparatus includes an oblate spheroid gasification chamber (12) having inlets (14) for feedstock material and gaseous oxidizer. A combustion gas outlet (16) permits removal of combustion gases, and an ash collection region allows for collection and removal of ash produced in the gasification chamber. A plurality of recirculating venturi tubes (35) recirculate combustion gases and particulates into and out of a gasification zone (32). Each venturi tube includes a plenum (40) having a gaseous oxidizer inlet (18) and a plurality of orifices are capable of producing high velocity air flow towards the feedstock material bed in the gasification zone. A plurality of air cannons (50) coupled to one or more pulse valves provide pulsed air flow into the gasification zone. Gaseous oxidizer inlet (18, 20, 22) in the ash collection region allow control of the ash carbon content.</p> |
