点击次数：
论文类型：会议论文
发表时间：2013-03-30
收录刊物：EI、CPCI-S、Scopus
卷号：712-715
页面范围：119-123
关键字：Rubber; Pyrolysis; Sulfides
摘要：Pyrolysis of vulcanized rubber (VR) with high total sulfur was carried out in the fixed-bed reactor. The effects of heating temperature on the formation of tar, gas and char and on the sulfide distribution in pyrolysis products were investigated. The maximal tar yield can reach 55.79% (wt,dry), water yield 1.30% (wt,dry). With increase in temperature, sulfur in char decreases and more sulfur migrates into gases and sulfur removal varies from 66.08% to 77.39 %, and the contents of H2S, CS2 and COS increase. Comparing with COS and CS2, the content of H2S is absolute overwhelming, due to sulfur radicals from crack of VR is much easier for hydrogenation reaction to produce H2S. GC-FPD (Flame Photometric Detector) was used to determine the predominating sulfur containing compounds in tar. The results indicates sulfides in tar are mainly present in form of sulfides with aromatic group. When heating temperature grows, sulfur transfers pyrolysis gas instead of char and total content of detected sulfides in tar rises and then declines.