Improve the efficiency of production and energy use for Viglacera Autoclaved Aerated Concrete Brick Plant, Bac Ninh
Project 06:47 - 22/09/2019
In the framework of the activities of the Project "Promotion ofnon-fired brick production and utilization in Viet Nam," on 14 September 2019 at Viglacera Autoclaved Aerated Concrete JSC, Bac Ninh, a working session between the Project Management Board, Viglacera Company, ConsultantTeam of Ha Noi University of Science and Technology and National University of Civil Engineering took place to report the results of technical consultancy activity on "Improving the efficiency of production and energy use forViglacera Autoclaved Aerated Concrete Brick Plant, Bac Ninh”.
Mr. Nguyen Dinh Hau, Director General of Department of Science and Technology for economic and technical branches, Ministry of Science and Technology, Project Director speaking at the meeting
Speaking at the meeting, Mr. Nguyen Dinh Hau, Director General of Department of Science and Technology for economic and technical branches, Ministry of Science and Technology, Project Director said: This is one of the important technical activities/consulting products to improve production efficiency, energy saving and environmental protection for businesses producing non-firedbuilding materials, and also a very good opportunity to get the support of scientists on building materials and energy audits with simple but very effective solutions. The results of the report should be studied and the company should have an implementationplan based on its conditions and resources.
At the meeting, Mr. Nguyen Van An, Consultant Team Leader of Ha Noi University of Science and Technology presented summarized contents of the research report, including: Requirements of the Project, implemented tasks with the main research results along with recommendations for the enterprise based on the current status of energy use and energy supply system of the plant, energy efficiency and environment after implementing energy-saving solutions and opportunities for replication. In addition, Consultant Bui Danh Dai of the National University of Civil Engineering mentioned some requirements on the quality and quantity of input materials (Such as gypsum, sand, lime, cement, water ...) that need more attention to and stabilization in the production process, proposed to use waste gypsum from thermal power plants with good quality, need to screen & wash sand before using or using other materials instead of sand like fly ash or blast furnace slag (Can be purchased from Pha Lai Thermal Power Plant that is near and have lower costs). Consultants also said that at present, Viglacera plant has also carried out the improvement of the technological line and has tested the mix design, the plant needs to use autoclaved aerated waste products and use fly ash to replace the sand, need to replicate this effective model of Viglacera.
Mr. Nguyen Van An, Consultant Team Leader reporting the implementation results
According to Mr. Vo Quang Diem, Project’s Building Material Specialist: Viglacera not only benefited from direct support of technical consultancy to improve efficiency of production and energy use, but also benefited from the support from the project for autoclaved aerated concrete sub-sector, such as funding to review and issue 3 standards for lightweight concrete: TCVN 7959:2017 for Lightweight concrete - Autoclaved aerated concrete products - Technical requirements and TCVN 9030:2017 for Lightweight concrete - Test methods. In particular, the Project also provided funding to establish the“Scientific and practical basis to identify technical criteria and testing methods of reinforced autoclaved aerated concrete wall panels made in Viet Nam" as a basis for drafting 3 standards for autoclaved aerated concrete wall panels: Product standard, test method standard and construction & acceptance standard, these are the key products with development potentialof the company,if these standards and technical norms are slow to be issued, it is very difficult to apply in construction works. Regarding the improvement of production efficiency, product quality as well as energyefficiency, PMU highly appreciated the consultancy results of Consultants, most of the recommendations have been implemented by the plant. European technology with strict control of input materials, improved product quality have brought AAC of Viglacera to a new level. The fact that the company has succeeded in using wastes for production as well as is studying the use of fly ash instead of crushed sand as raw materials for production is a right direction, contributing to reducing environmental pressure for thermal power plants.
On behalf of Viglacera, Mr. Nguyen Thanh Phong, Plant Director thanked and highly appreciated the support of the Project, which is very necessary and brings practical and specific results to the plant. Energy audit report as well as assessment of the current state, proposed solutions to improve product quality and production efficiency of the plant are the basis for the Company to modernize and increase the capacity of the plant from 100,000m3/year to 200,000m3/year and improve product quality. These have been carried out by Viglacera in this investment project and the technical proposals of the consultants have been implemented by Viglacera. Thanks to the NFB Project of the Ministry of Science and Technology for supporting the review of 2 standards for lightweight concrete and wall panels, developing 3 standards for autoclaved aerated concrete wall panels and reinforcement which are being accepted for issuance, very necessary for Viglacera and autoclaved aerated concrete manufacturing sub-sector, creating favorable conditions for the plant to bring products to the market.
Participants visiting the plant
Concluding the meeting, Mr. Nguyen Dinh Hau emphasized that the Ministry of Science and Technology and the PMU have accompanied Viglacera during the past time, with the trend of ACC lightweight bricks having more and more opportunities to develop in the market, it is necessary to continue to strictly control the quality of products, including researching and investing in input materials, controlling energy sources in the production process to avoid losses. The Ministry of Science and Technology and the PMU will continue to accompany and support Viglacera in the application and innovation of technology to improve productivity, product quality,he expressedhis belief that Viglacera will be one of the pioneering enterprises asa model of quality, designs and prestigious brands in the domestic and foreign building material markets in the coming time./.