对一套烷基化装置的脱丁烷塔（DIB）的操作情况进行了考察和分析，以它为例说明在装置的产量要提高、效益要增加时，如何改进其设计和操作。硫酸烷基化装置的进料段及反应段的能力一般是有富裕的，而DIB是限制因素，特别是在再沸器负荷最大，而且在再沸器的供蒸汽阀全开的情况 The operation of a debutanizer (DIB) for an alkylation unit was investigated and analyzed as an example of how to improve its design and operation as the yield of the unit increased and the benefits increased. The capacity of the feed section and the reaction section of the sulfuric acid alkylation unit is generally well-to-do, and DIB is a limiting factor, especially at the maximum reboiler duty and with the reboiler steam valve fully open