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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

05/09/22

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 renewed 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.

Improvement 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 desulfurization equipment(FGD) 0and wet electrostatic precipitator(WESP).

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 standard 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 (%) ( Mar-2022)
Schedule Actual Difference
22.04 22.04 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

Affected by the pandemic of Covid-19 and the increase of construction cost, the EPC (Engineering Procurement and Construction) bidding had failed for 2 times to choose the successful bidder until the 3rd time tendering. So far the EPC contractor(KC Cottrell)had completed the site survey in July and has proceeded with procurement to expedite the preliminary work.