Sichuan Desheng Cement actively practices "three fine management" and continuously promotes fine management. By carrying out excellent cost reduction, rationalization proposals, technical research, minor reform and other activities, the KPI indicators have been continuously improved, and the comprehensive energy consumption, coal consumption and power consumption indicators of clinker unit products have reached the national level of energy efficiency. In recent years, it has obtained 13 utility model patents and 3 software copyrights, and has become the first high-tech enterprise of Southwest Cement .
To improve the level
of digitalization, the company independently designed the built-in four-way valve and electrical control program, transformed the reversible belt conveyor into a one-way belt conveyor, solved the problems of high failure rate and frequent material blockage, converted manual work to DCS digital control, and reduced labor intensity. Through independent design, installation and transformation, 29000 yuan was invested in the construction of an integrated control system for card display, truck scale measurement and cement dispersion, and the on-site cement dispersion was operated by one key, which saved about 350000 yuan a year in outsourcing costs and achieved remarkable digital cost reduction.
The
company analyzed the rotor, powder separation area and seal ring groove of No.1 vertical powder separator for raw materials, enlarged the diameter of the rotor by 120 mm and increased the height of the rotor by 140 mm. The seal structure of the small guide vane is changed into the segmented labyrinth seal, which breaks through the bottleneck of the reliability of the equipment and the power consumption of the system. The hourly output of the raw material system is increased from 200t/H to 230t/H, the power consumption is reduced by 0. 8kWh/t, and the annual benefit is 787 thousand yuan. Based on the analysis of the current situation of
the preheater, the structure of the new cyclone was studied, and a new inner cylinder was designed by independent calculation, retaining the non-interference space of 0. 1 R, enlarging the diameter of the inner cylinder by 200 mm, and lengthening the inner cylinder by 700 mm. After replacing the inner cylinder, the output increased by 200 t/d, the outlet temperature decreased by 10 ℃, the preheater outlet resistance decreased by 200 Pa, the clinker standard coal consumption decreased by 0. 8 kg/t, and the clinker comprehensive power consumption decreased by 0. 3 kWh/t. Before and after
the improvement of the rotor structure of the
powder concentrator, the cyclone structure was improved
to increase the waste heat power generation
. In the face of the low power generation per ton of clinker in the waste heat power generation system after the technical transformation of the grate cooler this year, the company immediately set up a research team. The influencing factors were checked and improved one by one, the blade angle of the cooling fan in the circulating water pool was adjusted, the air leakage point of the FRP cooling tower was blocked, the condenser and pre-cooler were cleaned at high pressure, the internal and external seals were optimized, and the bypass windbreak wall of the grate cooler was moved to the tail of the grate cooler. And the wind wall will be designed in a special-shaped way (the investment will be reduced by 700000 yuan compared with the planned pipeline). Through the implementation of a series of technical transformation projects, the power generation per ton of clinker has increased by 3 kWh, and the annual income can reach 1.2 million yuan.
Waste heat power generation system optimization
"three fine management" is a set of enterprise construction method which integrates management and operation, combines efficiency and benefit, and combines internal and external work. Sichuan Desheng Cement will deepen lean production, excellent cost reduction, upgrade standardization, process and digitalization in accordance with the upgrading requirements of "Three Fine Management 2.0", move towards higher quality and higher level development goals, and strive to achieve green, low-carbon and sustainable development.
Digitalization and intellectualization are the core factors affecting the long-term development of cement enterprises. To this end, China Cement Network will hold the "Fifth China Cement Intelligence Summit Forum" in Hangzhou on November 29, 2023 with the theme of "Data-driven Decision-making Intelligence Leads the Future", inviting industry experts, scholars and representatives of relevant enterprises to discuss and promote the progress of intelligence in the cement industry.
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