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邓志诚1(), 许世峰2, 王淇冬2, 王家瑞1, 王斯民1()
收稿日期:
2023-11-09
修回日期:
2024-03-05
出版日期:
2024-03-11
通讯作者:
王斯民
作者简介:
邓志诚(2001—),男,硕士研究生,deng2194410841@stu.xjtu.edu.cn
基金资助:
Zhicheng DENG1(), Shifeng XU2, Qidong WANG2, Jiarui WANG1, Simin WANG1()
Received:
2023-11-09
Revised:
2024-03-05
Online:
2024-03-11
Contact:
Simin WANG
摘要:
浸没燃烧技术在处理高盐高COD废水方面具有传热效率高、不易结晶结垢、处理范围广等优势。针对此技术,首先自主设计搭建了实验平台,研究了常规浸没燃烧过程中的气液两相流动换热特性,分析了浸没燃烧关键操作参数对不同浓度高盐高COD废水的处理能力。在此基础上,为了进一步提高能效,对比了不同浸没管结构下的蒸发性能。实验结果表明:增大燃气流量与浸没深度有利于提高温升速率,缩短蒸发时间;随着有机溶液流量和有机溶液初始COD值的增大,COD去除率有所降低,其中有机溶液流量对COD的去除效率作用更加明显;采用平板多孔板与锥形多孔板浸没管结构能改善高温烟气分布情况,提高蒸发效率与热效率,但不利于浸没管背压稳定,导致液面波动程度增大;与传统单效蒸发结晶能耗对比,浸没燃烧装置运行能耗下降,总运行费用降低28.3%,经济性能得到提升。
中图分类号:
邓志诚, 许世峰, 王淇冬, 王家瑞, 王斯民. 浸没燃烧处理高盐高COD废水过程与能耗分析[J]. 化工学报, DOI: 10.11949/0438-1157.20231152.
Zhicheng DENG, Shifeng XU, Qidong WANG, Jiarui WANG, Simin WANG. Process and energy consumption analysis of high salt and high COD wastewater treatment by submerged combustion[J]. CIESC Journal, DOI: 10.11949/0438-1157.20231152.
单位 | 浸没式燃烧 | 单效蒸发结晶 | 多(三)效蒸发结晶 | ||
---|---|---|---|---|---|
蒸发量 | t/h | 0.66 | |||
有效热量 | kcal | 418686.40 | |||
能源消耗 | |||||
天然气 | Nm³/h | 51.81 | / | / | |
蒸汽 | t/h | / | 0.86 | 0.26 | |
循环水 | t/h | / | 60.00 | 60.00 | |
电 | kw/h | 4.00 | 12.00 | 15.00 | |
运行费用 | |||||
天然气费用 | 元/h | 157.50 | / | / | |
蒸汽费用 | 元/h | / | 206.4 | 61.92 | |
循环水费用 | 元/h | / | 9.00 | 9.00 | |
电费 | 元/h | 2.68 | 8.04 | 10.05 | |
总运行费用 | 元/h | 160.18 | 223.44 | 80.97 |
表1 不同蒸发结晶方式运行费用对比
Table 1 Operational cost comparison of different evaporation crystallization methods
单位 | 浸没式燃烧 | 单效蒸发结晶 | 多(三)效蒸发结晶 | ||
---|---|---|---|---|---|
蒸发量 | t/h | 0.66 | |||
有效热量 | kcal | 418686.40 | |||
能源消耗 | |||||
天然气 | Nm³/h | 51.81 | / | / | |
蒸汽 | t/h | / | 0.86 | 0.26 | |
循环水 | t/h | / | 60.00 | 60.00 | |
电 | kw/h | 4.00 | 12.00 | 15.00 | |
运行费用 | |||||
天然气费用 | 元/h | 157.50 | / | / | |
蒸汽费用 | 元/h | / | 206.4 | 61.92 | |
循环水费用 | 元/h | / | 9.00 | 9.00 | |
电费 | 元/h | 2.68 | 8.04 | 10.05 | |
总运行费用 | 元/h | 160.18 | 223.44 | 80.97 |
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