探求高效裂解生产乙烯的新途径

SEARCH AFTER NEW APPROACH FOR EFFICIENT PYROLYTIC MANFACTURE OF ETHYLENE

  • 摘要: 乙烯是裂解反应过程中的中间产物,其收率随反应时间变化. 在最佳反应时间,收率最高. 裂解反应温度愈高,峰值收率愈高,最佳反应时间则愈短. 当前通用的竖管裂解炉难以满足大幅度提高乙烯收率并降低生产成本的要求. 评述了几种激波加热方法的优缺点. 简要描述了我们目前正在研究中的反向射流混合加热方法.

     

    Abstract: Ethylene belongs to intermediate in the pyrolyticprocesses. The yields of ethylene change with pyrolsis durations whichreach the peak at the optimal resident time. While the reactiontemperature increases, the peak yields of ethylene is increased and theoptimal resident time is sharply shortened. The vertical pipe furnacesin common use in convensional pyrolytic technology are difficult tosatisfy the demands for significantly higher yields of ethylene andlower production costs. The advantages and disadvantages of heating bystanding shock wave are reviewed and the developing heating method bymixing of opposite jets with high temperature steam flow is describedbriefly.

     

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