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SO2从烟气中通过支持的Fe-Zn-Cu吸附剂去除

Yueying Li¹, Chuan Na¹, Jinxiao Dou¹

¹Key Laboratory for Advanced Coal and Coking Technology of Liaoning Province, University of Science and Technology Liaoning, Anshan 114051, China.

Materials (Basel, Switzerland)

|January 25, 2025

概括

一种新的铁铜 (FZC) 吸附剂在炭上有效地从烟气中去除二氧化硫 (SO2). 最佳条件实现了高的SO2吸附能力,证明了工业烟气脱硫的潜力.

科学领域:

环境科学与工程环境科学与工程
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

工业烟气含有二氧化硫 (SO2),这是一个主要的空气污染物,导致酸雨和呼吸系统问题.
有效和经济的SO2去除方法对于环境保护和监管合规至关重要.
岩炭和支金属吸附剂正在探索它们在烟气脱硫 (FGD) 中的潜力.

研究的目的:

为了研究煤炭和一种新的支持的Fe-Zn-Cu (FZC) 吸收剂上的SO2吸附机制.
评估FZC吸附剂在各种条件下用于烟气脱硫的性能.
确定最大化SO2吸附能力和突破时间的最佳实验参数.

主要方法:

通过将金属组件浸在原煤上,然后通过蒸汽气化来制备FZC吸附剂.
在固定床反应堆中使用模拟烟气 (SO2/O2/H2O/N2) 进行的烟气脱硫实验.
在吸附前后使用X射线衍射 (XRD),FTIR,TG-MS和BET表面积分析分析固体样本的分析.

主要成果:

红炭和FZC吸附剂都显示出有效的SO2吸附.
烟气中O2和H2O的存在显著促进了FZC吸收剂上的SO2吸附.
SO2吸附能力随着温度升至250°C而增加,然后在300°C时下降. 在最佳条件下,产生了2200mg SO2/g的吸收容量和280分钟的突破时间.

结论:

FZC吸附剂表现出优异的SO2吸附性能,特别是在最佳条件下 (250°C,5%O2,10%H2O).
该研究阐明了吸附机制,突出了金属元件和工艺条件的协同效应.
开发的FZC吸附剂为高效和成本效益的烟气脱硫应用提供了一个有希望的候选者.

关键词:

铁--吸收剂铁--吸收剂激活的 char char char char 的时间.突破性吸附能力的突破性吸附能力烟气脱硫处理烟气脱硫处理

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