Nantong Petrochemical Branch Great Bay Bridge Oil Machinery Plant through the centrifugal pump impeller cutting technology transformation, changing the equipment "big car" situation. After the transformation, the electricity consumption will be reduced to 8.22 million kwh and the annual economic profit will be 220,000 yuan.
Centrifugal pump is the main fluid transport equipment in the petrochemical production process, facilities often leave a larger design margin. Nantong Petrochemical Branch in 2008 due to pump design margin most of the power consumption of 5.26 million kwh, leading to more serious energy waste.
According to the working principle of the centrifugal pump, the technicians of the plant decided to adopt the scheme of changing the structure of the pump body and the impeller cutting to carry on the technological transformation to the centrifugal pump. Impeller cutting method is simple and easy to implement, and cost less, quick. Taking B-202 centrifugal pump as an example, the original pump shaft power is 110 kW, which provides flow and lift larger than the actual process value. After cutting and transformation, the impeller diameter is cut from the original 324 mm to 290 mm, 140 meters down to 112.16 meters, cutting power of 79.9 kWh, the power down 30.1 kWh, the flow of 183.3 ~ 222.4 cubic meters / h, to meet the needs of the scene process.
At present, the plant a total of 15 similar centrifugal pumps to implement technological transformation, after the implementation of centrifugal pumps work well, after the calculation of energy-saving up to 10,836 kWh.
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