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用热重法研究了含氧气氛中Ｔ３０５氧化锌脱硫剂脱除Ｈ_２Ｓ的微观动力学。实验表明，２００～２９０℃温度范围，脱硫初期为化学反应控制，中后期转移为晶粒扩散控制。Ｏ_２存在会阻碍反应进行。气氛中Ｏ_２含量小于０．４％（ｍｏｌ）时，在不同控制区，过程对Ｏ_２均为－０．５级；Ｏ_２含量超过０．４伴随着深度氧化而使脱硫过程复杂化。脱硫反应动力学行为可用未反应收缩核模型描述。给出了不同控制区的参数估值及动力学表达式。对反应后粉末及球形颗粒进行了ＥＰＭＡ分析。
The thermogravimetric method was used to study the kinetics of H_2S removal by T305 zinc oxide desulfurizing agent in oxygen atmosphere. Experiments show that the temperature range of 200 ~ 290 ℃, the initial desulfurization for the chemical reaction control, the transfer of the late grain-diffusion control. The presence of O2 can hinder the reaction. When the O_2 content is less than 0.4% (mol) in the atmosphere, the O_2 content is -0.5 in different control zones. When the O_2 content exceeds 0.4, the desulfurization process is complicated by the deep oxidation. Desulfurization reaction kinetic behavior can be described by the unreacted core model. The parameter estimation and dynamic expression of different control zones are given. The post-reaction powder and spherical particles were analyzed by EPMA.