Air Pollution Control

Air
Pollution
Control
Management

Management policy

We comply with environmental regulations, commitments and strive to reduce and prevent pollution, mitigate potential risks in operations, and continuously improve.
We conduct regular and irregular inspections to review our compliance with environmental regulations and propose corresponding improvement measures for non-compliance.

Management goal

We conduct daily equipment inspections and monthly factory environment inspections by 5S teams to prevent pollution. We prevent the leakage and volatilization of harmful substances or gases and reduce the emission of particulate matter and spills of PVC resin silo.

The main air pollutants emitted from the processes of each plant of CGPC include sulfur oxides (SOx), nitrogen oxides (NOx), volatile organic compounds (VOCs), and Hazardous Air Pollutants (HAPs).

In order to effectively control air pollutants, each plant of CGPC regularly conducts air pollutant monitoring and reports to the competent authority on schedule. It also obtains the fixed pollution source installation and operation permit in accordance with the law and has air pollution dedicated personnel and agents to manage it. CGPC (Toufen Main Plant) built a new Activated carbon Fluidized Bed Technology for VOCs Adsorption and Control in 2022, to reduce VOCs and mitigate greenhouse gas emissions.

■ Air pollution emissions of each plant in the last 3 years

Unit: tons/year

By company
Pollutants
2023
2024
2025

CGPC
(Toufen Main Plant)
Sulfur oxides (SOx)

0.883

0.000

0.000

Nitrogen oxides (NOx)

27.014

16.949

14.849

Volatile organic compounds (VOCs)

304.979

237.496

247.906

Hazardous air pollutants (HAPs)

13.277

7.275

2.258

TVCM
(Linyuan plant)
Sulfur oxides (SOx)

0.117

0.106

0.087

Nitrogen oxides (NOx)

52.409

60.250

59.104

Volatile organic compounds (VOCs)

35.465

16.416

8.499

Hazardous air pollutants (HAPs)

17.218

6.559

3.988

CGPCP
(Linyuan plant)
Volatile organic compounds (VOCs)

6.951

7.188

7.480

Hazardous air pollutants (HAPs)

1.486

2.524

2.908

Total
Sulfur oxides (SOx)

1.000

0.106

0.087

Nitrogen oxides (NOx)

79.423

77.199

73.953

Volatile organic compounds (VOCs)

347.395

261.100

263.885

Hazardous air pollutants (HAPs)

31.981

16.358

9.154

Note 1：

CGPC completed the installation of pollution control equipment in 2022 and added a natural gas boiler in October 2023 to gradually phase out the use of coal-fired boilers. Since toluene and xylene constitute the majority of the plant's Hazardous Air Pollutants (HAPs) emissions, the company has progressively reduced the use of raw materials containing these two substances starting in 2025 to lower HAPs emissions. The increase in volatile organic compounds (VOCs) in 2025 compared to 2024 was due to the increased use of alternatives to toluene and xylene.

Note 2：

In 2024, TVCM converted all EDC and light/heavy-ends storage tanks into pressure-like vessels, routing emissions to treatment equipment via a closed-loop gas collection system. Ethylene dichloride (EDC) is the primary component of HAPs emissions within the plant. Moving forward, equipment retrofits will be conducted on the tail gas cracking furnace (F-6801) and the wastewater stripper (C-6251) to reduce HAPs emissions. Regarding the significant increase in NOx emissions, an intelligent energy-saving project (C-6202) will be introduced to the process facilities to reduce NOx emissions.

Note 3：

The reasons for the increase in VOCs and HAPs are explained as follows: Vinyl chloride monomer (VCM) is the primary component of HAPs emissions. Aging spiral heat exchangers resulted in poor heat exchange efficiency, which led to lower VCM stripping efficiency and consequently impacted HAPs emissions. For related response measures, please refer to Note 4 in CH 5.4 Air Pollution Control.

Note 4：

Starting from 2025, Hazardous Air Pollutants (HAPs) are statistically calculated based on the individual species declared/verified emission volumes regulated by the Ministry of the Environment's "Regulations Governing Air Pollution Control Fee Collection.“

Note 5：

The standards for applying emission factors are either the emission factor method (pursuant to the regulations announced by the Ministry of the Environment) or the testing method (the average value of the reports issued by external testing institutions from the three most recent tests).

The description of effeteness for activated carbon Fluidized Bed Technology for VOCs Adsorption and Control

CGPC's leather plant promotes “circular economy, cost reduction, and employee work environment health and well-being”.

Abnormal leaks and emissions of volatile organic compounds (VOCs) can impact the environment and affect health. We take a proactive approach to this issue and strictly require improvement. The pollution control of this project is better than the regulations. We hope to reduce air pollution and contribute to environmental protection and the health of workers.

The effectiveness of activated carbon fluidized bed control equipment.

(1)

Prevent emissions: Outperform environmental regulations and save air pollution costs.

(2)

Circular Economy: Recovery and reuse of VOC and mixed solvents.

(3)

Economies Effect: Reduce production costs and outsource to treat wastewater to resale, which could use as high-heat-fuel.

(4)

Social participate: Improve the air quality of employee and community.

Investment

Motivation：
To reduce VOCs air pollution control and reduction, we are constantly looking for ways to improve process and module test design. We are also developing and deepening environmentally friendly, green energy-saving, and recycling and reuse technologies.
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Execution condition:
Plan to set up activated carbon fluidized bed control equipment (Invest NTD 65 million dollars).

Improve the capture efficiency of VOCs from manufacture process to reduce emissions.

Integrity and improve the process equipment to reduce the energy consumption and cost.

Refine the method of VOCs capture to reach the circular economy around the wastes.

Output

External effectiveness (Society):
VOCs generated from the process is reduced by an optimized capture and treatment, which can greatly improve the negative impact on human environment and health, and largely reduced emissions. Contribute to the protection of the earth's environment.
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Opportunity effectiveness:
VOCs generated from the process could recycle back into the manufacture process or outsource to treat and then sell to relevant markets, achieving the benefits of a circular economy.
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Internal effectiveness (Company):

Improve the workplace environment.

Retrofit exhaust blower to improve the efficiency of capture to lower the power consumption by 43%. Reduce the carbon emissions 46 tones/CO₂e annually and save the air pollution fee.

Waste liquor was recycled and back into the manufacture process to reduce the production cost.

Effectiveness

The effects on beneficiaries.

Strengthen operational expertise.

Minimize occupational hazards for employees.

Create a sustainable and livable community.

Meet global recycling standards.

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Internal effectiveness:

The company is recognized for its commitment to employee care.

Attract talent.

Increase employee engagement.

Boost customer retention.