The meeting was attended by representatives of the Department of Innovation, Green Transformation and Industrial Promotion - Ministry of Industry and Trade; the DEPP3 Program Implementation Team; the Board of Directors and staff of Song Da Cao Cuong Joint Stock Company; and the domestic consulting unit - ENERVI Vietnam Energy and Environment Joint Stock Company.
Speaking at the meeting, Mr. Hoang Van Tam, Head of the Climate Change and Green Growth Group, Department of Innovation, Green Transformation and Industrial Promotion (Ministry of Industry and Trade) emphasized: “Energy saving projects not only play an important role in the sustainable development strategy of the industrial sector, but also contribute to promoting green transition and improving the competitiveness of enterprises. We highly appreciate the initiative of Song Da Cao Cuong Joint Stock Company in approaching and implementing advanced solutions to optimize energy efficiency”.
As one of the first 04 enterprises participating in the pilot Voluntary Agreement Program (VAS Program) from 2023, SCL has been supported by experts of the Program to evaluate and identify the most potential energy efficiency solutions.
Three energy efficiency and emission reduction solutions
After the research process, 03 key solutions were proposed by experts of ENERVI Vietnam Energy and Environment Joint Stock Company, expected to help the enterprise reduce 6% of energy consumption and reduce 3% of emissions by 2025.
The number one solution is heat recovery to improve the steam system. Field surveys show that the factory's steam system is currently operating inefficiently, leading to condensate no longer being "clean" due to direct contact with the product, steam is discharged directly into the environment at high temperatures, 180oC - 190oC. To solve the above problems, experts have proposed a solution to install a flash tank and a deaerator to recover and clean waste heat, reusing it for the boiler. This solution saves 465 tons of fuel/year, with an investment cost of about 1.2 billion VND and a payback period of 1.7 years. In particular, the solution does not incur operating and maintenance costs.
The second solution is proposed to increase the combustion efficiency of the boiler by improving the disc burning mode. Currently, the factory is using fans to distribute fuel (wood chips) to the boiler, causing a large amount of residual carbon in the ash and high CO concentration in the exhaust gas. Experts from the DEPP3 Program proposed to replace the fuel distribution structure to increase combustion efficiency. The solution has an investment level of only 100 million VND but helps save 58 tons of fuel/year, paying back in 1.2 years.
The final proposed solution is to utilize waste heat from the drying system with a high dynamic temperature of 120oC-130oC. High exhaust gas temperature not only damages the bag filter but also wastes heat energy. Accordingly, experts propose the solution of installing a water heater to utilize waste heat to supplement the boiler. With a cost of about 1.58 billion VND, the solution helps save nearly 700 tons of biomass/year, paying back after 1.5 years. Similarly, the solution does not incur operating or maintenance costs.
According to the assessment of the DEPP3 Program expert, with a total investment of less than 3 billion VND, the three solutions not only bring significant energy savings but also help businesses reduce about 2.1 tons of CO₂ per year, contributing to realizing the goal of green production.
In addition, the solutions also bring many non-energy benefits (NEB) such as: reducing production costs, extending equipment life, reducing thermal pollution in the workplace and improving working conditions.
Creating opportunities from carbon credits
Mr. Vu Van Chien, General Director of SCL said: “The company highly appreciates the support of experts from ENERVI Vietnam Environmental Energy Joint Stock Company of the Program. In the coming time, the Company will move to step 2, implementing investment and researching options to optimize the energy efficiency of production systems in the factory.”
SCL representative also expressed his wish to receive continued support and advice from the Ministry of Industry and Trade and the DEPP3 Program to create carbon credits, access global carbon credit trading markets and affirm the position of a prestigious green building materials manufacturing brand in Vietnam.
Mr. Jorgen Hvid, Long-term Advisor of the DEPP3 Program, said that the working process with SCL has provided valuable practical experiences for the Program to perfect the guidelines for developing energy efficiency projects and share them with stakeholders. “After the feasibility study, the DEPP3 Program is ready to continue to accompany and support SCL in accessing preferential loan sources for energy efficiency and preparing loan documents if businesses have a need,” expert Jorgen affirmed.
The working session ended with the affirmation of close cooperation from all parties to promote the implementation of energy efficiency solutions and reduce emissions in the coming time, helping businesses move towards a pioneering model in the field of producing environmentally friendly construction materials.
