Air Pollution Control

● Strategy: Reduce the environmental impact of air pollutant emissions.
● Goals of 2030: SOx -20%、NOx -25%、TSP -25% (Base year: 2019)

To promote air pollution reduction, we are committed to improving the quality of air emissions with tightened measures, and controlled the sources of air pollution. In addition to the regular testing of the boiler equipment and exhaust pipe, the Houli Mill and Tayuan Mill set up automated and continuous air quality monitoring facilities and connected them to the equipment of the competent authority to ensure compliance of the emissions with laws and regulations. Improvement measures are taken for the pollutants on an ongoing basis and the following three phases are designed for the improvement: source management, process system optimization, and end control. The source management includes reducing the consumption of coal, heavy oil, and other fossil fuels by integrating energy resources. We have also set long-term reduction targets, and strive to reduce air pollution emissions by continuously improving manufacturing processes and investing additional emission treatment equipment

After building an indoor coal yard in Houli Mill in 2019 to reduce dust effusion, we continue to add a dust prevention equipment over the top access of the coal bunker, water spray and foal dust removal equipment, and bag-type dust collector fly ash air conveyor system in 2020. We also built the SCR control equipment at Tayuan Mill and activated the “Zero Odor Effusion Project” by installing the suction pipelines and flue dust detectors. The Purchasing Department also purchase high-quality coal, as a result, the sulfur contained in coals purchased in 2020 reduced from 0.8% in 2019 to 0.45%, and SOx also reduced significantly. The Container Box Division has faded out oil-fired boilers to gas-fired boilers since 2013, and all projects were completed in 2020. It not only saves fuel costs, but also increase air emission quality, achieving win-win for both environment and corporate.

CLC Houli Mill
Taiwan’s first mill with an indoor coal yard

An indoor coal yard can effectively reduce particulate effusion from coal storage and well meet the regulatory enclosed building. Houli Mill initiated the construction of the new indoor coal yard in 2017 and was completed in March 2019. The coal yard covers up to about 20.6% of the coal of the mill. The coal bunker consists of three sections and can store three different types of coals for use by boilers from different burning characteristics to enhance bunker control efficiency and prevent spontaneous combustion of coal through turning prevention. We also constantly assess the construction of coal bunker in other mills to enhance coal efficiency.

Taiwan’s first papermaker using gas boilers in all container box plants

In 2013, we began to fade out the fuel-oil boiler of all container box plants and had completed the modification project of in five container box plants: Panchiao, Tayuan, Miaoli, Taichung, and Yenchao. In 2019, supporting the “Industry Low-Carbon Application Project” of the Chiayi County Government, the Talin plant has activated the gas-fired boiler modification project in January 2020. After using gas-fired boilers in all container box plants, the combustion efficiency increased by over 5%, GHG emissions reduced by 27%, NOx emissions reduced by 63%, and TSP emissions reduced by 93%*. *Calculated according to the “Regulations Governing the Emission Coefficients, Control Efficiency, and Other Quantification Rules for the Declaration of the Air Pollution Control Fees for Particulates, Lead, Cadmium, Mercury, Arsenic, Hexavalent Chromium, and Dioxin at Public and Private Stationary Pollution Sources.”

To resolve the odor problems in paper mills, our efforts in process improvement and system optimization have borne fruit. All units also inventory the odor sources and make the odor maps to focus on the improvement countermeasures. In endpoint control, we build high-efficiency air pollution control equipment to effectively control air pollution emissions. In 2020, the Company receive no fine for odors from air pollution.

CLC 2020 Air Pollution Control Results

Pollution Results (YoY)
SOx -16.1%
NOx -15.5%
TSP -23.9%
VOC -7%