** Background and Challenges: Efficiency bottleneck of steel cooling system ** A large steel group has several high-temperature production lines, and its cooling circulating water system treats 50,000 tons of water per day, which is the core infrastructure to ensure the stable operation of the equipment.
However, the system has been faced with the following problems for a long time: 1. Serious accumulation of impurities ** : The circulating water contains oxide sheet iron, sand and microorganisms, resulting in blockage of the heat exchanger and a decrease in cooling efficiency. 2. ** High maintenance cost ** : Traditional filters need to be manually disassembled 3-4 times a week, and the annual maintenance cost exceeds one million yuan. 3. ** Energy consumption and water resources waste ** : Due to blockage, pumping energy consumption increases, while the frequency of water refill increases, and the annual water supply reaches 200,000 tons. ** Solution: Intelligent Purification System for Liffert ISE Backwash Filter ** In response to the above pain points, Liffert customized the integrated solution of "Backwash filter + intelligent monitoring" for the steel group, the core product features are as follows: 1. ** Efficient filtration and automatic cleaning ** 304 stainless steel wedge mesh filter element (accuracy 100 microns), interception rate ≥99.5%. Built-in pressure difference sensor, when the accumulation of impurities causes the pressure difference to reach 0.05MPa, the backwash procedure is automatically started, and the cleaning is completed within 30 seconds and the operation is resumed without stopping. 2. ** Low energy consumption design ** Optimized fluid channel structure, system resistance is reduced by 25%, and pumping energy consumption is reduced by 15%. Corrosion-resistant materials extend equipment life to more than 8 years and reduce the frequency of replacement. 3. ** Intelligent integrated **PLC control system real-time monitoring of water turbidity, pressure and cleaning cycle, data can be remotely transmitted to the central control platform to achieve preventive maintenance. ** Implementation process: From deployment to optimized closed-loop management **1. ** System design ** : Based on production line distribution, 12 ISE-400 filters were deployed in parallel operation, with a total processing capacity matching 50,000 tons/day demand. 2. ** Debugging and verification ** : In the initial operation stage, the filter intercepts about 2 tons of impurities per day, and the heat exchanger clogging frequency is reduced from 2 times per week to 1 time per month. Further reduce energy loss by dynamically adjusting the backwash threshold (optimized from 0.05MPa to 0.03MPa). 3. ** Long-term maintenance ** : The backwash function reduces the frequency of manual cleaning from 3 times a week to 1 time every six months, and the annual maintenance cost is reduced by 40%. Periodically analyze water quality data through the central control platform to warn potential problems in advance.
** Results and benefits: Data-driven sustainable value ** ** Customer feedback and technology extension ** Head of Equipment Management, Steel Group, said: "Liffert's backwash filters not only solve the blockage problem, but also help us move from passive maintenance to active management through intelligent monitoring. By reducing the energy consumption of the system, we can reduce carbon emissions by about 400 tons per year, providing a key support for green factory construction." At present, the technology has been promoted to the group's three branches, and expanded to the petrochemical and power industries, verifying its universality under different working conditions. Based on this case, Liffert further developed the "multi-media filtration + online sterilization" composite system to provide customized solutions for more complex water quality scenarios. ** Conclusion: Technological innovation drives Industrial Green transformation ** Through the deep integration of backwash filters and intelligent monitoring technology, Lifeldt provides an efficient and low-cost purification path for cooling circulating water systems in the steel industry. In the future, the company will continue to focus on the field of fluid environmental protection, explore cutting-edge technologies such as AI predictive maintenance and membrane water treatment, and help more enterprises achieve energy saving and sustainable development goals.
