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| Reuse of Waste Heat of Warm Water Produced at Evaporation Stage of Alkali Recovery Plant |
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| DOI：10.11980/j.issn.0254-508X.2016.11.013 |
| Key Words:pulp and paper warm water evaporation waste heat recovery recycling energy conservation and emissions reduction |
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| Abstract:The analysis of pulp and paper production process indicated that, the temperature of water supplied from secondary pumping station is lower than 20℃ in winter. It is 5~10℃ lower compared with the water temperature 25~30℃ in summer, which causes the whole production systems at high energy consumption in winter. On the other hand most of the warm water generated from plate heat exchange in the alkali recovery plant was recycled after cooling down to lower than 30℃, it also causes the lose of water heat and increasing energy consumption of (water temperature 45～50℃) the circulating water station cooling tower system. This paper suggested the waste water from evaporation stage back into the clear water reserviors of secondary pumping,to improve the production water temperature in winter, reduce production energy consumption． |
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