MODELING OF UNSTEADY-STATE OXIDATION PROCESS OF SO_2（Ⅲ）A BENCH-SCALE INVESTIGATION

Wu Huixiong; Lu Hong; Li Chengyue（College of Chemical Engineering

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MODELING OF UNSTEADY-STATE OXIDATION PROCESS OF SO_2（Ⅲ）A BENCH-SCALE INVESTIGATION

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- MODELING OF UNSTEADY-STATE OXIDATION PROCESS OF SO_2（Ⅲ）A BENCH-SCALE INVESTIGATION
- CIESC Journal Issue 5, (1998)
- 作者机构：
  
  北京化工大学化学工程学院!北京100029,北京化工大学化学工程学院!北京100029,北京化工大学化学工程学院,北京,100029
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q02
- Online First：25 October 1998，
  
  Published：25 October 1998
- 稿件说明：
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Wu Huixiong, Lu Hong, Li Chengyue（College of Chemical Engineering. MODELING OF UNSTEADY-STATE OXIDATION PROCESS OF SO_2（Ⅲ）A BENCH-SCALE INVESTIGATION[J]. CIESC Journal, 1998, (5).
DOI：

Wu Huixiong, Lu Hong, Li Chengyue（College of Chemical Engineering. MODELING OF UNSTEADY-STATE OXIDATION PROCESS OF SO_2（Ⅲ）A BENCH-SCALE INVESTIGATION[J]. CIESC Journal, 1998, (5). DOI：

摘要

用国产S108钒催化剂，装填量为4.58L，在单级、径向绝热固定床反应器上，在流向变换强制周期操作条件下对低含量二氧化硫（0.53％～5.75%）催化氧化过程的特性进行了系统的模试研究。考察了原料气中SO_2含量、气速、操作周期以及床层预热温度等因素对S0_2时均转化率、床层瞬态温度分布、形状及其峰值，以及对热波传播速度的影响，为验证数学模型的预测能力和修正某些模型参数奠定了基础．结果证明，这一种人为非定态操作模式在用于低含量原料气的可逆放热反应时，的确具有很大的优越性。

Abstract

A systematie testing of unsteady state oxidation of low content SO_2 by periodic flow reversa1 was carried out in a bench-scale reactor packed with 4.58 L domestic commercial vanadium supported catalyst

S108.The effects of SO_2 content in feed

superficial velocity of gas

preheated temperature of the catalyst bed and operation period on transient temperature profiles and its peak values

time-average conversions and the propagation velocities of the thermal wave were observed.It was shown that periodic flow reversal of fixed-bed catalytic reactor certainly had considerable advantage of conventional steadystate operation especially for reversible exothermic reaction with low content reactant.The results obtained in this investigation would be used to compare with those predicted by mathematical model and to identify the global kinetic parameters in the best-fit model.

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