Patent ID: 9638414
Date: 2017-05-02
CPC Classifications: F23B,F23G,F23J,F26B

Claim:
1. A system for processing a sewage sludge, comprising: a dryer for partially drying the sewage sludge; a gasifier for substantially converting the partially dried sewage sludge into syngas, wherein the gasifier applies heat in an oxygen-starved environment, whereby carbon-containing materials in partially dried sewage sludge chemically react to produce the syngas without burning; a low NOx oxidizer for combusting substantially all of the syngas to substantially reduce NOx compounds and produce heat and hot flue gas, wherein the heat is used to directly or indirectly partially dry the sewage sludge in the dryer; a pathogen destruction furnace downstream from the low NOx oxidizer for substantially destroying volatile organic compounds and/or residual pathogens; and a lime injection system for substantially removing SOx in the pathogen destruction furnace.