Hanshan Southern Cement Co., Ltd. regards cost reduction and efficiency enhancement as the key entry point to win the whole year, and presents an excellent "energy-saving answer sheet" in the process of "sprinting the fourth quarter". The company has always regarded power consumption management as the key point of cost control, taking the reduction of "one kilowatt hour" as a breakthrough point, exploring energy-saving paths through benchmarking optimization and fine control of the whole process, and has achieved good results in cost reduction and efficiency enhancement, which has added a strong impetus to the annual target.
01 Source control, process optimization to achieve systematic energy saving
, including the reduction of power consumption in the south of the mountain, pointing directly to the source of the process, through the collaborative optimization of "batching-coal-system wind", to achieve systematic energy consumption reduction. In the process of raw meal preparation, through the precise use of gasified slag and strict control of the fineness of magnesium slag, the grindability of raw meal has been significantly improved, the output of raw meal grinding has been increased by 15-20 tons, and the power consumption of the process has been reduced by about 0.6 degrees/ton, thus realizing "burden reduction and efficiency enhancement" at the source of production.
Optimize the coal and reconstruct the combustion system. The enterprise also replaced high-ash and high-alumina coal with low-ash and low-alumina coal, which seemed to be a "counter-trend" measure, but by stabilizing the kiln conditions and reducing the demand for system air, it successfully realized the gradual reduction of high-temperature fan air, and the C1 outlet temperature dropped by more than 10 C, which achieved remarkable results. This linkage energy-saving measure from "combustion" to "ventilation" can reduce the unit consumption of high-temperature fans year by year, fully demonstrating the wisdom of enterprises to solve energy consumption problems by using systematic innovative thinking.
02 Process management and control, equipment operation highlights the level
of refinement in equipment management, Hanshan South adheres to the principle of "competing for electricity per kilowatt hour", and effectively improves energy efficiency through technological innovation. By stabilizing the limestone ratio, strictly controlling the roll gap difference and other key parameters, the roller press system standardizes the start-up and shutdown process, effectively eliminates ineffective idling, and significantly reduces the power consumption of the system. The optimization effect of the
fan system is obvious. By cleaning the grate plate of the grate cooler and optimizing the grate speed, the frequency of the three fans in the second section is reduced by 15-20Hz respectively. After the transformation of the air intake pipe of the coal mill, the frequency of the exhaust fan at the kiln head is further reduced by 5 Hz, and the cumulative power saving is about 2 degrees/ton, so as to truly achieve the goal of "every Hz must be contested". In the transformation of air compressor system, the enterprise chooses the appropriate frequency conversion air compressor to replace the original power frequency machine, realizes the output on demand, saves 2000 degrees of electricity per day, reduces the unit consumption by 0.3-0.5 degrees, and effectively solves the problem of energy waste of "big horse pulling small car".
03 Strategic Innovation, Production Organization to Achieve Synergy
Hanshan South has promoted power consumption management to an important level, and achieved synergy through innovative production organization mode. The production strategy of "high production of valley electricity and economy of flat electricity" is strictly implemented, and the high energy consumption process is centralized in the period of low electricity price, which significantly reduces the cost of electricity consumption. By rationally allocating the rhythm of day shift production of aggregate line and night production of cement mill, the
enterprise not only realizes the efficient circulation of internal personnel, but also optimizes the power load, achieves the dual benefits of "manpower saving" and "energy consumption reduction", and demonstrates the wisdom of management.
04 Experience Enlightenment, Lean Management Creates Effectiveness
Hanshan Nanfang's practice shows that cost control does not necessarily require large-scale investment, lean management and system optimization can also create significant benefits. Through the three-dimensional linkage of technology, equipment and management, the enterprise has put the saving of "one kilowatt hour" into practice, and has formed a replicable and popularizable experience of reducing costs and increasing efficiency. Through management practice
, Hanshan South integrates fine management into all aspects of production and operation to win initiative and advantage. This "energy-saving answer sheet" from the production line not only injects new momentum into the high-quality development of enterprises, but also achieves win-win economic and environmental benefits.
浙公网安备33010802003254号