Hefei is like a giant dragon sitting in the green mountains and waters, merging into the foot of Yefu Mountain with green peaks and ridges. Hefei South has made every effort to build a new modern factory for green intelligent manufacturing, and has built a demonstration line of green low-carbon technology and equipment for cement, which is ready for transformation and upgrading, and realizes the green development of ecological priority.
Transformation and upgrading
promote the transformation
of traditional manufacturing industry to high-end. Southern Cement deeply implements the concept of "two mountains", actively responds to the transformation and development strategy of "three modernizations" of national manufacturing industry, and solidly implements the corporate mission of "materials create a better world" of China Building Materials Group. Through the overall relocation and comprehensive optimization and upgrading of the original production line in the south of Hefei, a 6000t/d new dry process cement clinker production line and a 2 million tons/year grinding production line were relocated.
From design to landing, Hefei South has always adhered to the goal of building a safe, efficient, green and low-carbon intelligent chemical plant, and practiced the concept of "three fine management". Through the application of the most advanced production technology and equipment in the industry, such as "high efficiency and low resistance preheater decomposition furnace system, new raw material roller press equipment and technology", combined with the intelligent control system developed by Southern Cement, since the production line was put into operation in August 2022, compared with the same type of production line, the production efficiency and product quality in Southern Hefei have been improved. All the operation indexes are superior to the national standard grade I energy efficiency. Relying on advanced and green intelligent manufacturing equipment,
Hefei South steadily implements intelligent management and control of production links, optimizes production process, and uses advanced digital and information technology to visualize the whole process of factory production and operation. Build a safe and efficient modern intelligent factory. Establish an intelligent control platform covering the whole process of storage, transportation, grinding, firing and delivery of cement production, as well as "APC + big data + AI algorithm" production, such as quality, safety, environmental protection, measurement and inventory, and apply 30 AI algorithms, such as quality prediction, kiln condition identification, big data optimization and intelligent identification of abnormal conditions. And realize that identification of abnormal working condition of the kiln, the global autonomous optimization and the real-time prediction of free calcium oxide and clinker.
Up to now, automatic laboratory and on-line detection equipment, intelligent optimization control platform, on-line detection of health status of host equipment and fault diagnosis and early warning system, on-line oil monitoring system have been put into use. Limestone crushing, raw material grinding, coal grinding, desulfurization and denitrification, clinker dispersion, auxiliary raw coal storage yard have been unattended, one-key start and stop, automatic control, and all abnormal conditions can be fully automatic interlocking protection. On the premise of ensuring production safety, the labor intensity of operators is reduced by more than 90%, the long-term operation rate of the system under all working conditions is 98. 9%, the key parameters of each system are controlled more smoothly, and the production line basically realizes intelligent operation except for manual intervention when the kiln is unstable. South
Hefei resolutely implements the concept of green development, gives priority to the use of clean energy, strives to build energy-saving and environment-friendly enterprises, and makes positive contributions to promoting the construction of ecological civilization.
Through environmental protection equipment and facilities such as precise denitration SNCR + SCR + wet desulfurization + bag dust removal, combined with sealing and dust collection of transportation, transshipment and storage facilities, both organized and unorganized emissions meet the ultra-low emission limit requirements of the National Opinions on Promoting the Implementation of Ultra-low Emission in Cement Industry. In terms of
green energy, through the application of international advanced photovoltaic building integration technology, cadmium telluride power generation glass is installed on the facade of large silo facilities, so that the building can achieve multiple functions such as heat insulation, heat preservation and power generation. The total installed capacity of monocrystalline silicon and cadmium telluride photovoltaic in the whole plant is 1.88 MW, and the annual power generation is 1.6248 million degrees, which can reduce carbon dioxide emissions by 923.68 tons per year.
At present, Hefei Southern Alternative Fuel Utilization Project is under construction, which is expected to use 81.12 million tons of alternative fuels annually, save 42.9 million tons of standard coal, reduce 107000 tons of CO2 emissions, and achieve obvious energy saving and emission reduction effects. It is of pioneering significance for energy saving and carbon reduction of cement kilns in Anhui Province, and plays a role in promoting the ecological environment management and low-carbon economic development of surrounding areas.
Strengthen management
, improve governance efficiency and stimulate the vitality
of enterprise development. Hefei South continues to promote "three fine management", adhere to the goal orientation, and seek benefits from management. The Group will continue to improve its organizational competitiveness through slimming and strengthening the foundation; continue to improve its cost and brand competitiveness through meticulous management and continuous improvement; and continue to improve its profitability through intensive market cultivation and innovative development. We will make every effort to promote the construction of the six management standardization systems of "site, safety, environmental protection, production, quality and equipment", continuously deepen the precise benchmarking and fine management, refine the monthly production plan and improve the assessment system. Through continuous strengthening of internal management and continuous optimization and upgrading, the cost has been greatly reduced, and all data indicators are better than the industry level. In 2023, the manufacturing cost of cement and clinker in Hefei South decreased by 19% and 22.5% respectively.
Since the optimization and upgrading project was put into operation, Hefei South, based on its own advantages, promotes development through innovation, and takes the lead in a replicable and popularizable high-quality development path for the traditional cement manufacturing industry. In 2023, the project passed the AA level evaluation of integration of two modernizations successively, and won the design achievement award of the first building materials industrial design innovation activity of China Building Materials Federation.
In the future, Hefei South will continue to uphold the enterprise mission of "materials create a better world", take technological innovation and equipment upgrading as the driving force, constantly enhance the core competitiveness of enterprises, and strive to build a green, low-carbon and intelligent first-class cement production demonstration line in the industry. With more outstanding achievements, we will make new and greater contributions to the high-quality development of New Tianshan Cement and Southern Cement.
