Patent ID: 7014824

Claim:
A method for purifying process waste gases containing selected harmful substances comprising: introducing the process waste gases with combustible gas and oxygen into a waste gas purification system having a combustion chamber, an exit, and operating parameters, including amount of combustible gas and amount of oxygen; post-treating reaction products leaving the combustion chamber in a sorbtion chamber with an associated washing agent circuit containing washing agent having a selectable pH; measuring with a first detector the type and amount of selected harmful substances in the process waste gas before said waste gases enter the waste gas purification system to generate first measuring signals; determining with a second detector the type and amount of selected harmful substances of the reaction products leaving the waste gas purification system at the exit of the purification system to generate second measuring signals; and directly using the first and second measuring signals for adjusting the operating parameters of the waste gas purification system, including amount of combustible gas, amount of oxygen, amount of washing agent in the washing agent circuit, and pH of the washing agent.