Energy & Resources Integration
In climate change adaption, apart from reinforcing energy management,
We embark on energy-resources integration
For circular industrial development.
To enhance energy efficiency and raise competitiveness, CLC targets using co-generation with high thermoelectric performance in order to integrate electrical and thermal energy required for production. In addition, we exploit clean energy, such as wind power and solar energy, with regard to the geographical features of individual mills and plants. We also turn waste into resources to replace petrochemical fuels and thereby re-plan energy structures in order to minimize petrochemical fuel consumption and GHG emissions.
In 2000 we established the Energy Management Committee to enhance energy efficiency. In 2013 the Paper Division enrolled in the MOEA Energy Efficient Manufacturing System Beacon Guidance Scheme and implemented the ISO 50001 ErMS. In 2015 the Container Box Division also fully implemented the ISO 50001 Energy Management System (EnMS) to enhance energy management efficiency by continuously implementing the Plan - Do - Check - Act (PDCA) continual improvement framework.
Co-generation system with high thermoelectric performance
CLC has four co-generation systems. The 2016 autonomous electricity supply increased to 71.3% to significantly reduce purchasing electricity from Taiwan Power Corporation (Taipower). In addition, we could provide surplus electricity for Taipower to feed back supply in order to lessen the stress on Taipower’s reserve capacity. This marks out the characteristics and importance of the paper industry as a strategic industry for energy-resources integration. As a result, the purchased electricity demand for paper manufacture reduces every year as autonomous electricity supply increases. The 2016 statistics show that with autonomous electricity supply, the purchased electricity per unit of paper production was only 210kWh/t.
Through the smart use of the geographical characteristics of individual paper mills, CLC engaged in wind power generation in 2003 and implemented solar energy generation in 2011. The wind power generation facility in the ChuPei Mill was certified by the National Renewable Energy Certification Center in 2017 and acquired 2,949 renewable energy certificates (RECs) in 2018, becoming the first paper mill in Taiwan acquire RECs.
CLC Cogeneration System
|System by Mill||Houli Mill G1||Tayuan Mill||Houli Mill G2||Houli Mill G3|
|Generating Capacity (kWh)||9,620||10,800||48,000||29,000|
|List||Solar Energy||Solar Energy||Wind Power||Biogas Boiler|
|Mill||Houli Mill||Taichung Port Warehouse||Chubei Mill||Tayuan Mill|
|Nominal output: 493.5 kW (1 set)||493.5kW||1822.8KW||1,750kW||--|
|Emission reduction||approx. 300t CO2e/year||approx. 1,320t CO2e/year||approx. 1,560t CO2e/year||19,490t CO2e/year|
|Steam output||--||--||--||8,000 tons/year|
|Propane recovery||--||--||--||550 tons/year|
Performance of energy-resources integration
At CLC, our energy-resources integration covers four directions: wastepaper recovery and recycling, energy structure optimization, energy efficiency enhancement, and water resources cherishment.
1. Investing in advanced large paper machines to enhance production efficiency and reduce resources consumption.
2. Introducing co-generation systems using electricity and steam at the same time to enhance energy efficiency
3. Circulating production water use to reduce water consumption.
4. Introducing wind power and solar energy with regional geographical advantages.
5. Waste to resources: Replacing petrochemical fuels by turning process waste into RDF-5; recovering biogas from wastewater treatment after recovery and purification with the heat recovery system, and recovering ash and sludge to recycle into green construction materials.
6. Recovering process residual heat with heat pumps to reduce the waste of process waste heat.
Major Achievements in 2018 and Future Development of Energy-Resources Integration
|2018 Achievements in Energy-Resources Integration|
|Recovered Paper Recovery and Recycling||Recycling paper use is increasing year by year, using about 1.8 million tons of recycled paper. Recycled paper recycling rate in 2018 was as high as 92.6%, higher than the average of Taiwan's paper industry :75%.|
|Alternative Energy||Wind power in 2018: 2,932,174 degrees ; Solar power in 2018: 475,464 degrees|
|Waste to Resources||Up to 70% waste was turned into resources. Promoting RDF-7 (gasification) and sludge gasification to turn waste into fuel to reduce environmental impacts.|
|GHG Emissions||GHG emission intensity was 1.57 million t CO2e, down 5% from 2005.|
|Water Management||Total water consumption was up to 18,960,000m3, 201.6 million m3 less than 2017.|