Corrosion control in and selenium removal from flue gas wet scrubber systems

A method for minimizing corrosion in a flue gas wet scrubber process, the method comprising:

• providing flue gas;
• and
• passing the flue gas into the flue gas wet scrubber process comprising a polymer derived from at least two monomers:
• acrylic-x and an alkylamine, and wherein said acrylic-x has the following formula:
• wherein X═OH and salts thereof or NHR2 and wherein R1 and R2 is H or an alkyl or aryl group, wherein the molecular weight of said polymer is between 500 to 200,000, and wherein said polymer is modified to contain a functional group capable of scavenging at least one metal-comprising composition.

A method for removing selenium from scrubber liquor, the method comprising:

• providing scrubber liquor containing a concentration of selenium;
• and
• treating the scrubber liquor with an amount of a polymer derived from at least two monomers:
• acrylic-x and an alkylamine, and wherein said acrylic-x has the following formula:
• wherein X═OH and salts thereof or NHR2 and wherein R1 and R2 is H or an alkyl or aryl group, wherein the molecular weight of said polymer is between 500 to 200,000, and wherein said polymer is modified to contain a functional group capable of scavenging at least one metal-comprising composition;
• and
• wherein the amount reduces the concentration of the selenium in the scrubber liquor from about 20 to about 60%.