华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (3): 78-82.

• • 上一篇    下一篇

垃圾焚烧气氛中碱金属氯化物的腐蚀机理

祝建中1 陈烈强2 甘轲2   

  1. 1.苏州大学 化学化工学院,江苏 苏州 215006;2.华南理工大学 化工与能源学院,广东 广州 510640
  • 收稿日期:2004-03-29 出版日期:2005-03-25 发布日期:2005-03-25
  • 通信作者: 祝建中(1971-),讲师,工学博士,主要从事环境与资源利用的研究 E-mail:zionay@sohu.com
  • 作者简介:祝建中(1971-),讲师,工学博士,主要从事环境与资源利用的研究
  • 基金资助:

    广东省自然科学基金资助项目(990645)

Corrosion Mechanism of Alkali Chloride During the Incineration of Refuse

Zhu Jian-zhong1  Chen Lie-qiang2  Can Ge2   

  1. 1.College of Chemistry and Chemical Engineering,Soochow Univ.,Suzhou 215006,Jiangsu,China;2.College of Chemical and Energy Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-03-29 Online:2005-03-25 Published:2005-03-25
  • Contact: 祝建中(1971-),讲师,工学博士,主要从事环境与资源利用的研究 E-mail:zionay@sohu.com
  • About author:祝建中(1971-),讲师,工学博士,主要从事环境与资源利用的研究
  • Supported by:

    广东省自然科学基金资助项目(990645)

摘要: 随着固体废弃物焚烧法处理技术的发展,高温腐蚀问题越来越受到关注.文中从固体废弃物的焚烧过程的高温腐蚀普遍特性出发,通过不锈钢在多组分固-汽-气多相氛围下的高温腐蚀实验,研究不锈钢实验材质在复杂的固-汽-气环境里的腐蚀动力学,并分析了碱金属氯化物对不锈钢材料的腐蚀机理,研究结果表明,垃圾焚烧气氛里的腐蚀过程十分复杂,腐蚀动力学曲线表现为多段曲线.腐蚀机理分析表明,碱金属氯化物可以加速对不锈钢材料的腐蚀速率;不锈钢材料具有耐温抗腐蚀的效果,可用于温度在600℃以下的固体废物焚烧系统中.

关键词: 高温腐蚀, 垃圾焚烧, 碱金属氯化物

Abstract:

With the development of solid waste incineration technology,more and more attentions were paid to the high-temperature corrosion behavior.In this paper,according to the general high-temperature corosion characteris-tics of solid waste during the incineration,corosion tests of stainless steel were performed in a complicated solid-vapour-gas environment,the corosion dynamics was discussed,and the corosion mechanism caused by alkali chlo-tides was analyzed.The results indicate that the corosion process during the incineration is a complicated process with a muhi-stage corosion dynamics curve.The analytical resuhs of corosion mechanism show that alkali chlo-tides can accelerate the corosion of stainless steel.and that stainless steel is of the ability of anti.corosion at a high temperature.which makes it usable in the incinerator of solid waste at a temperature below 600℃ .

Key words: high-temperature corosion, waste incineration, alkali chloride