Experimental study on elemental mercury adsorption by novel nano-sorbents

KONG Fanhai; ZHAO Junwu

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Experimental study on elemental mercury adsorption by novel nano-sorbents

Thermal Power Generation Vol. 42, Issue 11, Pages: 76-80(2013)

更新时间：2025-09-28

- Experimental study on elemental mercury adsorption by novel nano-sorbents
- 作者机构：
  
  西安热工研究院有限公司苏州分公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X511
- Published：2013
- 稿件说明：
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KONG Fanhai, ZHAO Junwu. Experimental study on elemental mercury adsorption by novel nano-sorbents[J]. Thermal Power Generation, 2013, 42(11): 76-80.
DOI：

KONG Fanhai, ZHAO Junwu. Experimental study on elemental mercury adsorption by novel nano-sorbents[J]. Thermal Power Generation, 2013, 42(11): 76-80. DOI：

摘要

在固定床反应器上进行了模拟烟气条件下纳米Fe2O3-SiO2吸附剂脱除单质汞的实验

考察了负载量、床层温度、停留时间、水蒸气、SO2对样品脱汞效率的影响。结果表明

负载量、温度、水蒸气浓度对脱汞效率的影响均呈先增加后降低的趋势

其最佳值分别为负载量10%

温度350℃

水蒸气体积分数3%。由于传质对反应的影响

延长烟气停留时间有利于脱汞反应

而高SO2浓度不利于吸附剂脱汞

其浓度应低于1 000μL/L。

Abstract

The experiment about gas-phase Hg0adsorption by nano-Fe2O3-SiO2sorbents in simulated flue gas atmosphere was performed on a fixed bed reactor

using an online gas-mercury analyzer.The effect of such factors as Fe2O3loading

bed temperature

residence time

water vapor concentration and SO2on the mercury removal efficiency was investigated.The results showed that

compared with the nano-Fe2O3powders

the nano-Fe2O3/SiO2had better performance for mercury removal.With the increasing Fe2O3loading

bed temperature and water steam concentration

the mercury removal rate increased first and then dropped.The optimal conditions were:at bed temperature of 350℃

with the Fe2O3loading of 10% and the water vapor volume fraction of 3%.Due to the influence of mass transfer on the reaction

prolonging the residence time was good to the mercury removal

but high SO2concentration went ill with the mercury removal

which should be controlled below 1 000μL/L.

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