Patent ID: 8048818

Claim:
A method for the regeneration of a selective catalytic reduction catalyst by removing at least one calcium sulfate layer located on the selective catalytic reduction catalyst, the method comprising the steps of: (i) providing a selective catalytic reduction catalyst having deposited thereon at least one calcium sulfate layer; (ii) supplying at least one reducing agent to the selective catalytic reduction catalyst, wherein the at least one reducing agent is selected based on its ability to convert the at least one calcium sulfate layer located on the selective catalytic reduction catalyst to at least one calcium oxide layer located on the selective catalytic reduction catalyst; (iii) contacting the at least one reducing agent with the at least one calcium sulfate layer located on the selective catalytic reduction catalyst in order to convert the at least one calcium sulfate layer to at least one calcium oxide layer; and (iv) removing the at least one calcium oxide layer from the selective catalytic reduction catalyst, wherein the selective catalytic reduction catalyst is located in a selective catalytic reduction system during the method, or is located in a selective catalytic reduction system that is in operation during the method, or is utilized in a selective catalytic reduction system after performance of the method.