ADVANCED SEQUENTIAL BATCH GASIFICATION PROCESS
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United States of America Patent
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Sep 3, 2015
app pub date -
May 31, 2013
filing date -
May 31, 2012
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Abstract
The invention relates to a two stage process for the thermal treatment of wastes consisting of a batch gasification process followed by a syngas combustion process. A system and method are provided comprising of one or more first process stage batch gasification chambers (1) which are connected to a common second process stage chamber, the syngas combustion chamber, or alternatively a syngas conditioning chamber (13) and afterwards a combustion of the syngas in either a combustion chamber, reciprocating engine, boiler, gas turbine or an internal combustion device. The process can also be used to process biomass and fuels by gasification. The gasification chamber (1) has separated nozzle areas corresponding to plenum sections of the bottom where a mixture of air and recirculated flue-gas (8) is blown under the combustible material. Flue gas flow is regulated by varying the production of syngas in the gasification chambers (1) by a feedback signal from devices such as draught sensors, thermocouples, fan speeds indicators, steam flow meters, oxygen concentration meters and power production indicators.
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