共沸物进料裂解双环戊二烯实验研究

EXPERIMENTAL STUDY ON THE VAPOR-PHASE THERMAL CRACKING OF DICYCLOPENTADIENE BY USING AZEOTROPE FEED

采用形成共沸物的方法使双环戊二烯(DCPD)与水在较低的温度下共同气化,将水蒸气作为稀释剂引入DCPD的气相裂解过程中。分别考察裂解温度和停留时间对DCPD裂解率和环戊二烯(CPD)收率的影响。结果表明,在实验范围内,DCPD裂解率随裂解温度和停留时间的增加而增大,但CPD收率却是随裂解温度和停留时间的增加先增加然后略有下降。在裂解温度350℃、停留时间1s的条件下,DCPD裂解率大于98%,CPD收率达94%。对实验结果进行了方差分析,为进一步优化操作条件提供了依据。

Dicyclopentadiene （DCPD） was vaporized together with water at a low temperature by using the method of azeotrope formation. Here, water vapor was introduced into the process of the vapor-phase thermal cracking of DCPD as the diluting agent. Effects of the cracking temperature and residence time on DCPD cracking rate and CPD yield were investigated. The results showed that within the experimental range, the DCPD cracking rate increased along with the cracking temperature rising and residence time extending, but the CPD yield first increased them reduced lightly. By further experiment, the best operation conditions of cracking temperature 350℃ and residence time 1 s were obtained. Under this condition, the DCPD cracking rate was greater than 98% and the yield of CPD was 94%. Foundation of further optimizing operational condition was provided by variance analysis of the experiment results.