【Haichuan Intelligence】Dongming Petrochemical’s “All-Response Thermal Power Cloud ADMC Intelligent Control Project” has become a model in the thermal power industry for using intelligence to overcome energy efficiency challenges
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On November 28, the \"Quanying Thermal Power Cloud ADMC Intelligent Control Project\", jointly developed by Dongming Qianhai Heat Power Co., Ltd., a subsidiary of Shandong Dongming Petrochemical Group, and Shanghai Quanying Technology Co., Ltd., was officially completed and delivered after passing the acceptance process. This 5-month-long intelligent upgrade, which features intelligent control across the entire process from boilers to steam turbines and pipelines, an ultra-high automatic operation rate of 99.82%, and a 1.51% improvement in overall energy efficiency, not only provided Dongming Qianhai Thermal Power with a key pathway to reduce costs and increase efficiency, but also served as a model for the thermal power industry in using intelligence to overcome energy efficiency challenges. Intelligent solutions for breaking through constraints: from \"manual intervention\" to \"full-process automatic control\". Dongming Qianhai Thermal Power Co., Ltd. is the key energy provider for the local chemical industry cluster in that area. It supplies stable steam and electricity to various chemical companies within the park, such as Runze Chemical, Lishu Shengyuan, and Qianhai Chemical. The company operates 2 high-temperature and high-pressure circulating fluidized bed (CFB) boilers with a capacity of 380 t/h each, 1 high-temperature and high-pressure backpressure steam turbine with a capacity of 18 MW, and 2 temperature and pressure reducing units. Its annual steam supply capacity reaches several million tons. The stability and efficiency of its energy supply are crucial for ensuring the safe operation and full production capacity of the downstream chemical enterprises; it serves as an essential \"energy heart\" for the regional chemical industry chain. However, as a traditional thermoelectric enterprise, Dongming Qianhai Thermal Power has long faced the common industry problem of multiple units operating independently. Under manual operation, the main steam pressure fluctuates by up to ±0.4 MPa, while the drum liquid level varies by ±23 mm. This not only makes it difficult to meet the stringent requirements of downstream chemical enterprises regarding steam quality, but also results in high energy efficiency losses due to uneven load distribution and delayed parameter adjustment. The implementation of Quanying Technology’s ADMC intelligent control system has completely restructured its thermoelectric production model at the control logic level.
The project covers the entire set of core production systems of Dongming Qianhai Thermal Power, enabling full-process automatic control of \"9 key systems on the boiler side + 6 types of core equipment on the turbine side\": parameters such as boiler coal feeding, feedwater temperature reduction, primary air, secondary air, and exhaust fans can be adjusted dynamically based on real-time operating conditions. Equipment such as high and low pressure deaerators, temperature and pressure reducers, feed water pumps, and drain pumps are subjected to precise, unmanned control, and even the desulfurization and denitrification systems used in environmental protection are included within this intelligent closed-loop control system. During the acceptance phase, both parties conducted a 72-hour continuous operation test in accordance with the technical agreement; the results showed that the system’s automatic operation rate was as high as 99.82%, far exceeding the preset standard of “≥98%”. What is even more noteworthy is that the \"intelligent dashboard + mobile management\" system developed as part of this project ensures that intelligence is integrated throughout the entire production process: the intelligent boiler dashboard displays in real time key parameters such as bed temperature, furnace negative pressure, and main steam parameters, as well as the automatic status of the equipment, and it allows for quick tracking of any abnormal parameters ； The turbine dashboard integrates key data such as steam pressure, power generation capacity, and deaerator level, providing an intuitive view of the turbine’s operational efficiency ； The desulfurization and denitrification dashboard focuses on environmental parameters such as the outlet NOx concentration and urea flow rate, to ensure precise control of pollutant emissions. At the same time, managers can remotely monitor production data, view parameter trend curves, and receive alerts for abnormalities through mobile apps, thus truly enabling them to keep track of the entire plant’s operational status without leaving their desks; this improves operational efficiency by over 60% compared to the traditional paper-based reporting method. Furthermore, the system’s built-in \"data + mechanism\" hybrid modeling and online self-learning capabilities enable it to dynamically adapt to changes in coal types and fluctuations in downstream steam demand, continuously optimizing control parameters and thus delivering long-term benefits of a \"smarter system over time\".
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