METHODS FOR TREATING WASTE GAS STREAMS FROM INCINERATION PROCESSES

摘要

A method for removing contaminants from the combustion gases generated by the incineration of waste. Air is injected into an incineration device along with a fuel and is supplemented by a oxygen feed. The resulting combustion waste gas stream contains contaminants such as nitrogen oxides and is quenched, then fed to a reaction zone where it will contact ozone for a predetermined period of time. The thus treated combustion waste gas stream can be fed to a scrubber assembly where the reaction products formed by the reaction of ozone and the contaminants are removed.

主权项

1. A method for removing contaminants from a gas stream exiting an incineration device comprising the steps:
a) Feeding waste, fuel and an air supply to a combustion chamber in the incineration device; b) Feeding oxygen to a mixture of the waste, fuel and air supply; c) Combusting the mixture thereby forming a combustion waste gas stream containing contaminants; d) Feeding the combustion waste gas stream to a quench unit; whereby the combustion waste gas stream is reduced in temperature; e) Feeding the combustion waste gas stream to a reaction zone; f) Feeding ozone to the reaction zone whereby the ozone and combustion waste gas stream remain in contact for a predetermined period of time; and g) Feeding the combustion waste gas stream to a scrubber, wherein the contaminants are removed.