试点规模的实验调查,干燥捕获和SO3在酸制造的化气体中
Wei Liu1,2,3, Xin Min4, Jin Zhao4
1Jiangsu Environmental Engineering Technology Co. Ltd., Nanjing, Jiangsu 210019, China.
ACS omega
|November 29, 2023
概括
使用ZnO和CuS的新型干过程有效地从炼烟气中去除 (Hg) 和三氧化硫 (SO3). 这种方法显示出减少工业排放造成的空气污染的前景.
科学领域:
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 炼等工业过程产生大量的 (Hg) 和三氧化硫 (SO3) 排放.
- 由于化学特性和反应条件不同,同时去除和SO3具有挑战性.
- 现有的污染控制技术可能无法有效地同时解决这两种污染物.
研究的目的:
- 开发和评估一种新的干捕获工艺,用于同时从炼烟气中去除Hg和SO3.
- 为了研究烟气冷却和吸附剂/SO3摩尔比对去除效率的影响.
- 评估由氧化 (ZnO) 和硫化铜 (CuS) 组成的混合吸附剂的性能.
主要方法:
- 设计了一种干捕获工艺,使用ZnO和CuS的混合吸附剂.
- 实验是在受控的烟气条件下进行的 (流量,温度,停留时间).
- 吸附剂/SO3摩尔比对SO3去除的影响被系统地研究.
主要成果:
- 烟气冷却促进了从气体固体到液体固体反应的转变,增强了SO3的去除.
- 最佳的 ZnO/SO3 比改善了 SO3 的捕获,但过量导致粒子聚合和效率降低.
- 在典型条件下,该工艺实现了32.6%的SO3去除和43.2%的总捕获,与76.3%的Hg0去除.
结论:
- 建议使用ZnO和CuS的干捕获技术可用于同时去除Hg和SO3.
- 过程参数,如烟气温度和吸附剂剂量,显著影响去除效率.
- 这项技术为减轻炼过程中的污染提供了潜在的解决方案.
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