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Taiwan Power Company

Environmental Protection Improvement Plan for Coal-fired Units

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Units No.5~10 Air Quality Control System (AQCS) Retrofit Work Project of Taichung Power Plant

03/19/24

Project Description

Background

Unit No. 5~10 of Taichung Power Plant have achieved outstanding performance since they were put into operation in 1996. However, due to the increasingly stricter standards of the central and local environmental protection regulations in recent years, the existing units will be retrofitted to supply the stable power and meet the environmental protection standards in the future operation life time by improving the air pollution control equipment, reducing various pollutants - NOx, SOx, PM, etc stable power supply.

Retrofit Scope

Improvement of Air Quality Control System(AQCS),includes the selective catalyst reduction (SCR .The SCR system shall be retrofitted to enhance the Mercury (Hg) oxidation rate),low low temperature electrostatic precipitator(LLESP),flue gas desulfurizationequipment(FGD) , wet electrostatic precipitator(WESP) and media gas-gas heater(MGGH).

Expected Effectiveness

The plan is expected to improve the existing NOX, PM and SOX control equipment of unit 5 to 10, so that the air pollutant concentration discharged by the units can be lower than the requirements of the air pollutant emission regulation of electric power facilities of the environmental protection Bureau of Taichung City Government (announced on 2024/01/01):

  1. Nitrogen oxide (NOx):  the concentration discharged will be reduced to 20ppm.
  2. Particulate pollutants (PM): the concentration discharged will be reduced to 5mg/Nm3 
  3. Sulfur oxide (SOx): the concentration discharged will be reduced to 10 ppm.

 

Progress Status

Project Progress
Overall Progress (%) ( February-2024)
Schedule Actual Difference
66.28 66.28 0
 
Unit Reaches Flue Gas Introduction Date
Unit 7 Unit 8
2023/03/25 2023/06/12
Unit 5 Unit 6
2024/04/07 2024/05/27
Unit 9 Unit 10
2025/04/08 2025/06/27

 

 

Construction Status

Unit 7 & 8 AQCS retrofit work has been completed, and Unit 5 has been shut down on August 12, 2023, and the demolition work of existing equipment has completed. Now, the work of retrofitting and testing is proceeding. Unit 6 has been shut down since October 1, 2023, up to now, installation of new equipment is still proceeding.