废弃轮胎的热解回收技术

Recovery of scrap tires by pyrolysis technology

从反应温度、反应时间、催化剂等热解条件对废弃轮胎热解产品产量的影响、热解的产物分析及其应用、废弃轮胎中硫的迁移等方面进行了详细论述。指出反应温度是轮胎热解的主影响因素。热解后,一般得到质量分数为10%～30%的气体、38%～55%的油相产物及33%～38%的固相产物,这些产物均具有较高的热值,可以作为燃料。此外,还可以分离回收液相中的具有较高附加值的化学物质;固相产物以炭黑为主,经处理后可以作为炭黑回用或吸附剂使用。同时还对废弃轮胎热解产物中硫的转化分布进行了讨论。最后对废弃轮胎的其他处理回收技术进行了展望。

This paper discusses the yield of the pyrolytic products under different process parameters, the characteristics and application of the pyrolytic products and the sulphur transformation during pyrolysis of scrap tires. The temperature is the main influencing factor. The produce from the tire pyrolysis was approximately 10%-30% of gas, 38%-55% of oily liquid, 33%-38% of solid. The produce has higher heating value, which can be used for fuel. Some valuable chemical substances also can be seperated from the oily liquid. The solid has a high fixed-carbon content and can be used to manufacture sorbent or carbon. This paper also deals with the sulphur transformation during the pyrolysis of scrap tires. The other treatment technologies were put forward at the end.