| 陈玮婷，温小荣，梁椿松.浸出车间汽提预冷凝器设计及节能效果分析[J].中国油脂,2022,47(12):.[CHEN Weiting, WEN Xiaorong, LIANG Chunsong.Stripper pre-condenser design and energy-saving analysis in leaching plant[J].China Oils and Fats,2022,47(12):.] |
| 浸出车间汽提预冷凝器设计及节能效果分析 |
| Stripper pre-condenser design and energy-saving analysis in leaching plant |
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| DOI： |
| 中文关键词: 汽提预冷凝器 蒸汽耗量 EDR 节能降耗 |
| 英文关键词:stripper pre-condenser steam consumption EDR energy-saving and cost-reducing |
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| 摘要点击次数: 950 |
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| 中文摘要: |
| 节能降耗对提升浸出车间生产线竞争力具有重要的意义。汽提塔气相温度可达95℃，其中含有49%的水蒸气和51%的正己烷。研究汽提塔气相冷凝特性发现，在操作压力为35 kPa下，温度从95℃下降至40℃的过程中，正己烷不会发生冷凝，水蒸气从70℃开始冷凝，温度降至54℃时，冷凝率可达88%。据此，通过增加汽提预冷凝器可对冷凝产生的热量进行回收，以日处理1 000 t 大豆浸出车间为例，通过换热器设计软件EDR对汽提预冷凝器进行设计、选型、校核，同时对节能效果进行评价。结果表明，通过设计、选型，换热面积为55 m2、型号为BEM 500×4 500 mm的列管换热器可以将新鲜溶剂温度从48℃加热至58℃。分析节能效果发现,浸出车间增加汽提预冷凝器，吨大豆可节约蒸汽8.2 kg、节约电量0.1 kW·h，具有很高的投资价值。 |
| 英文摘要: |
| Energy-saving and cost-reducing have great significance for improving the leaching plant production line competitiveness. The temperature of stripper vapor could reach 95℃， which including 49% water steam and 51% n-hexane. By studying condensation characteristics of the stripper vapor, it found that n-hexane did not condense when the temperature reduced from 95℃ to 40℃under the pressure of 35 kPa, while water steam begined to condense at 70℃ and the condensation rate could reach 88% as the temperature reduce to 54℃.Therefore, the heat generated by condensation could be recovered by adding a stripper pre-condenser. The stripper pre-condenser was designed, selected and calibrated by the heat exchanger design software EDR with the daily processing of 1 000 t soybean leaching plant as an example, and the energy-saving effect was also evaluated.The results showed that through the design and selection, the column heat exchanger with a heat transfer area of 55 m2and the model of BEM 500×4 500 mm could heat the fresh solvent from 48℃ to 58℃.Adding the stripper pre-condenser in leaching plant could reduce the steam and electricity of 8.2 kg and 0.1 kW·h, respectively, which had great investment value. |
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