Non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion
AssigneeGeneral Electric Company
InventorsNicholas Robert Blandford, Libardo A. Perez
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Abstract
Methods and compositions for inhibiting corrosion of metal surfaces in a furnace system are disclosed. In one aspect of the invention, pulverized coal is burned as fuel in the presence of a copper ion catalyst/combustion aid. Corrosion is inhibited in these systems by the use of a blend of primary aminoalcohol such as 2-aminoethanol, tertiary aminoalcohol such as triethanol amine, and boric acid or water soluble salt form of the acid.
Claims23
A method of inhibiting corrosion of metal surfaces in a furnace wherein coal is burned as a fuel, said method comprising burning said coal in the presence of a corrosion inhibiting treatment comprising an aminoalcohol.
In a method in which pulverized coal is burned as a fuel in a furnace in the present of copper to enhance the operation of the furnace, the improvement comprising also burning said coal in the presence of a corrosion inhibiting treatment, said treatment comprising 2-aminoethanol, triethanolamine and boric acid or water soluble thereof.
Corrosion inhibiting composition comprising an aqueous solution comprising:
- (a) 2-aminoethanol;
- (b) triethanolamine;
- and
- (c) boric acid or water soluble salt form.
Dependencies are inferred from the claim text.