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分析了丁二烯快轻超标的原因,提出了通过优化第二等取蒸馏部分的操作等措施来降低了二烯快经的方法.“,”The article analyzes causes for butadiene which contains alkyne that exceeds to advance the method of reducing butadiene alkyne quantity through optimal operation of part of 2nd extractive distillation.