Mercury, dioxin, and furan removal system and method for reducing gac fires on new high temperature municipal sludge incinerators

A method of constructing a high temperature municipal sludge incinerator, comprising:

• providing centrifuge decanter;
• attaching a feed pump to the centrifuge decanter;
• attaching a fluid bed reactor to the feed pump;
• attaching an air preheater to the fluid bed reactor;
• attaching a fluidizing air blower to the air preheater;
• attaching a waste heat boiler and economizer to the air preheater;
• attaching a turbine generator to the waste heat boiler and economizer;
• connecting a building heat supply to the turbine generator;
• attaching a gas reheater to the waste heat boiler and economizer;
• attaching an adsorber to the gas reheater;
• connecting an exhaust stack to the adsorber;
• attaching a quencher to the gas reheater;
• attaching a wet electrostatic precipitator to the quencher and the gas reheater;
• attaching a scrubber operatively to the quencher, the wet electrostatic precipitator, and the gas reheater;
• connecting an ash treater to the scrubber;
• and
• connecting a plant water supply to the wet electrostatic precipitator and the scrubber.

A method of using a high temperature municipal sludge incinerator, comprising:

• dewatering sludge by a centrifuge decanter;
• conveying the dewatered sludge by a feed pump from the centrifuge decanter to a fluid bed reactor;
• heating the dewatered sludge in the fluid bed reactor to a temperature of least 1250° F. to produce a flue gas
• transporting the flue gas to an air preheater;
• introducing air into the air preheater by a fluidizing air blower;
• heating the air and the flue gas in the air preheater;
• transporting the flue gas and the heated air to a waste heat boiler and economizer;
• removing a portion of ash contained in the flue gas by the waste heat boiler and economizer;
• transporting a portion of the flue gas to a turbine generator to create electricity and provide a building heat supply;
• transporting the remainder of the flue gas to a gas reheater;
• introducing clean flue gas into the gas reheater;
• interacting the clean flue gas with the remainder of the flue gas;
• increasing a temperature of the clean flue gas and the remainder of the flue gas in the gas reheater;
• transporting the clean flue gas and the remainder of the flue gas to a quencher and a scrubber;
• removing particulates and acid gas from the remainder of the flue gas;
• transporting the remainder of the flue gas back to the gas reheater to reheat the remainder of the flue gas;
• transporting the remainder of the flue gas to an adsorber;
• removing mercury, chlorinated dibenzo-p-dioxins (CDD), and chlorinated dibenzo-p-furans (CDF) from the remainder of the flue gas;
• transporting the remainder of the flue gas to an exhaust stack;
• monitoring for oxygen, carbon monoxide and nitrogen oxide in the remainder of the flue gas in the exhaust stack;
• and
• exhausting the remainder of the flue gas into the atmosphere.