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| Study on the Cleaning System for Prevention and Elimination of Scale in Horizontal Tube Falling Film Evaporator |
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| DOI：10.11980/j.issn.0254-508X.2016.12.004 |
| Key Words:horizontal tube falling film evaporator long tube spin vortex nozzle prevention and elimination of the scale evaporation capacity heat transfer coefficient |
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| Abstract:Using black liquor as working medium, the paper focused on the research and design of the on-line cleaning system for prevention and elimination of scale in horizontal tube falling film evaporator. The result showed that the on-line cleaning system had obvious effect on the prevention and elimination of scale formation, the capacity and heat transfer coefficient of the evaporator were improved. It could save energy more than 25% and reduce investment more than 25%, and maintain the stability of the concentration of the material at outlet. The main reason is that the on-line cleaning system is controlled by PLC and the long tube spining vortex nozzle can regularly clean the surface of heat exchange tube, keeping high cleanliness of the surface of the tube, evaporation operation no longer needs to switch washing operation in the effects． |
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