Zouxian Huadian International Use Case
Zouxian Huadian International Use Case

Zouxian Huadian International Use Case

Huadian International Zouxian Power Plant is a modern, large-scale pit-mouth thermal power plant located in Zoucheng City, Shandong Province, the hometown of the great ancient Chinese thinker and educator Mencius. To the south lies the water-rich Weishan Lake, and to the north is adjacent to the Yanzhou coalfield, providing unique natural conditions for development. Currently, the plant has 4 units of 335,000 kW, 2 units of 600,000 kW, and 2 units of 1,000,000 kW, with a total installed capacity of 4.54 million kW. It is one of the largest coal-fired power plants in the country and ranks among the highest in comprehensive energy-saving and environmental protection levels domestically. It is affiliated with China Huadian Corporation and is a subsidiary of Huadian International Power Co., Ltd. The first and second phases installed 4 units of 300,000 kW each, which were key national projects during the Seventh and Eighth Five-Year Plans. Construction officially began on October 1, 1983, with units successively completed and put into operation from 1985 to 1989. From 2001 to 2003, technological upgrades were carried out on the 4 units, increasing each unit's capacity to 335,000 kW. The third phase installed 2 units of 600,000 kW each, marking Shandong Province's first national key project built with World Bank loans and a provincial advancement project. Construction started in 1993, and all units were commercially operational by 1997, achieving the fastest construction speed, shortest commissioning time, and best overall quality for similar units nationwide at that time. Unit #5 became the first 600,000 kW unit in the country to meet production standards and set a national record for continuous safe operation of 401 days among similar units. The raw water used in the air compressor and condensate circulating water systems is sourced from Weishan Lake, classified as surface water containing solid impurities and suspended matter. A self-cleaning filter was selected to address the relatively poor water quality. After comprehensive evaluation of multiple options, the Fumide brand self-cleaning filter, model SCF-N series with various flow rates, was chosen. It is currently in operation and performing well, significantly reducing the workload caused by water impurities and has received unanimous praise from the power plant leadership. Fumide Environmental Protection Company adheres to the philosophy of "diligent innovation in technical products and keen understanding of customer needs," with a customer-first and service-oriented approach, providing the most practical and effective solutions. Water treatment organizations are warmly welcomed to visit and inspect!

 Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.

Keywords:

Category:

Power generation

Jinan Fumide Environmental Protection Technology Co., Ltd.

TEL:

131 5317 1310

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Huadian International Zouxian Power Plant is a modern, large-scale pit-mouth thermal power plant located in Zoucheng City, Shandong Province, the hometown of the great ancient Chinese thinker and educator Mencius. To the south lies the water-rich Weishan Lake, and to the north is adjacent to the Yanzhou coalfield, providing unique natural conditions for development. Currently, the plant has 4 units of 335,000 kW, 2 units of 600,000 kW, and 2 units of 1,000,000 kW, with a total installed capacity of 4.54 million kW. It is one of the largest coal-fired power plants in the country and ranks among the highest in comprehensive energy-saving and environmental protection levels domestically. It is affiliated with China Huadian Corporation and is a subsidiary of Huadian International Power Co., Ltd. The first and second phases installed 4 units of 300,000 kW each, which were key national projects during the Seventh and Eighth Five-Year Plans. Construction officially began on October 1, 1983, with units successively completed and put into operation from 1985 to 1989. From 2001 to 2003, technological upgrades were carried out on the 4 units, increasing each unit's capacity to 335,000 kW. The third phase installed 2 units of 600,000 kW each, marking Shandong Province's first national key project built with World Bank loans and a provincial advancement project. Construction started in 1993, and all units were commercially operational by 1997, achieving the fastest construction speed, shortest commissioning time, and best overall quality for similar units nationwide at that time. Unit #5 became the first 600,000 kW unit in the country to meet production standards and set a national record for continuous safe operation of 401 days among similar units. The raw water used in the air compressor and condensate circulating water systems is sourced from Weishan Lake, classified as surface water containing solid impurities and suspended matter. A self-cleaning filter was selected to address the relatively poor water quality. After comprehensive evaluation of multiple options, the Fumide brand self-cleaning filter, model SCF-N series with various flow rates, was chosen. It is currently in operation and performing well, significantly reducing the workload caused by water impurities and has received unanimous praise from the power plant leadership. Fumide Environmental Protection Company adheres to the philosophy of "diligent innovation in technical products and keen understanding of customer needs," with a customer-first and service-oriented approach, providing the most practical and effective solutions. Water treatment organizations are warmly welcomed to visit and inspect!

 Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.

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