METHOD AND SYSTEM OF INCREASING WATER AND ACID CONDENSATION FROM FLUE GAS

摘要

The system and method spatially predict the condensation of water and acid from the flue gas in the condensing heat exchanger installed in fossil power plant flue gas treatment system or similar environment. By modifying the operational conditions, the heat exchanger can control rates and areas of condensations. The system and method adjust either the cooling water temperature or the flowrate ratio of flue gas to cooling water to control the condensation rates of water or acids. The system and method also estimate actual coverage areas to apply for anti-corrosive coating onto the tube or duct surfaces to resist corrosion due to acid condensation. The system and method also optimize or customize condensation rates of water and acids in boiler flue gas under operating conditions given at a power plant.

主权项

1. A system for operating a condensing heat exchanger in a power plant that produces flue gas, the system controlling a rate of condensation of water and acid from the flue gas by the condensing heat exchanger, the system comprising:
a condensing heat exchanger through which the flue gas passes; a water inlet at which cooling water enters the heat exchanger; a flue gas inlet at which the flue gas enters the heat exchanger; a flow rate at which the cooling water passes through the heat exchanger; a computer calculating the rate of condensation of the flue gas within the heat exchanger, wherein the computer determines that the rate of condensation does not meet a desired rate of condensation; the system changing a variable of the heat exchanger to increase condensation.