垃圾焚烧气氛中碱金属氯化物的腐蚀机理  

Corrosion Mechanism of Alkali Chloride During the Incineration of Refuse

作　　者：祝建中[1] 陈烈强[2] 甘轲[2] 

机构地区：[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

出　　处：《华南理工大学学报（自然科学版）》2005年第3期78-82,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：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.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 corrosion characteristics of solid waste during the incineration, corrosion tests of stainless steel were performed in a complicated solid-vapour-gas environment, the corrosion dynamics was discussed, and the corrosion mechanism caused by alkali chlorides was analyzed. The results indicate that the corrosion process during the incineration is a complicated process with a multi-stage corrosion dynamics curve. The analytical results of corrosion mechanism show that alkali chlorides can accelerate the corrosion of stainless steel, and that stainless steel is of the ability of anti-corrosion at a high temperature, which makes it usable in the incinerator of solid waste at a temperature below 600℃.

关 键 词：高温腐蚀 垃圾焚烧 碱金属氯化物 

分 类 号：TG172.82[金属学及工艺—金属表面处理]