In the past, domestic chemical plants basically used ordinary circulating cooling water to transport centrifugal pumps. Because of the low efficiency of such centrifugal pumps, the loss of electrical power was particularly severe. In the second half of 2011, Shanghai Chlor-Alkali Chemical Co., Ltd. PVC Plant succeeded in energy-saving retrofitting of circulating cooling water delivery centrifugal pumps. The actual power saving effect reached more than 38%.
In chemical production, a heat exchange process of heat and mass transfer must be carried out. Therefore, basically all chemical plants need to use circulating cooling water to transfer heat from the production process and cool it. The circulating cooling water is generally transported by high-power and large-capacity centrifugal pumps, because the circulating cooling water is basically an uninterrupted process, and the centrifugal pump consumes particularly large amounts of electricity. In the past, the conventional circulating cooling water conveying centrifugal pumps used in domestic chemical plants had low efficiency and severe loss of power. Until the last year or two, the emergence of energy-efficient centrifugal pumps has solved this problem.
Shanghai Chlor-Alkali Chemical Co., Ltd. PVC Plant has a total of six centrifugal pumps for circulating cooling water. Previously, frequency conversion and energy-saving reforms have been implemented, but the energy-saving effect is not satisfactory.
For this reason, the plant succeeded in energy-saving transformation of circulating cooling water delivery centrifugal pumps in the second half of last year. This transformation first adopted a high-efficiency fluid transport technology to detect and calculate equipment, systematically detected and analyzed the conditions of the circulating cooling water system, analyzed the hydrodynamic characteristics of the circulating cooling water delivery, and optimized calculations were combined with special calculation software, and then based on the Optimizing the calculation results, selecting a suitable energy-efficient circulating cooling water delivery centrifugal pump to replace the previously used low-efficiency running ordinary circulating cooling water delivery centrifugal pump, the transformation achieved a one-time success.
After the PVC plant is changed to high-efficiency and energy-saving centrifugal pump, the annual power saving cost is over one million yuan, and the economic effect is particularly obvious. It is worthy of domestic manufacturers to learn from promotion.
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