马会霞 周峰 乔凯

摘      要： 不同装置因加工原料类型、生产目标产品要求以及下游需求等因素不同，生产的单体烃组成及分布存在差异。分析了芳构化、烷基化和醋酸仲丁酯等深加工装置副产清洁气资源的组成特征，以此开发了3个系列不同于炼厂生产的液化气新产品，即清洁民用燃气、乙烯裂解装置用饱和液化气和烷烃脱氢装置用原料液化气，并提供了相应产品的具体技术指标，可根据市场需求及装置现状灵活选择不同产品，为企业实现液化气资源效益最大化提供解决方案。特别是烷烃脱氢装置用原料液化气，可作为脱氢装置的补充原料，解决烷烃脱氢装置原料供应不足的难题，市场需求空间很大。

关  键  词：芳构化;烷基化;醋酸仲丁酯;清洁气

中图分类号：TE 624.48        文献标识码： A        文章编号：1671-0460（2020）08-1767-06

Abstract： The composition and distribution of monomeric hydrocarbons from different devices are quite different because of different processing raw material， target products requirements and downstream demand. The composition analysis of the cleaner liquid petroleum gas as the by-products of the C4 deep-processing units including aromatization， alkylation and sec-butyl acetate were studied. Three series of new liquefied gas products being quite different from that produced by refineries were developed， including cleaner civil gas， saturated LPG as feedstock for cracker to produce ethylene and the feed for light-paraffin dehydrogenation units， specifications of the corresponding products were also provided. Different products can be flexibly selected according to market demand and device status， so as to provide solutions for companies to maximize the benefits of liquefied gas resources. In particular， the feed for light-paraffin dehydrogenation units used in the alkane dehydrogenation units can be used as a supplementary feedstock for the dehydrogenation devices， solving the problem of insufficient supply of raw materials for the alkane dehydrogenation device， and the market demand is very large.

Key words： Aromatization; Alkylation; Sec-butyl acetate; Cleaner liquid petroleum gas

清潔气通常指烯烃含量较低并用作民用燃气的液化石油气产品[1]。当液化气烯烃含量较高时，其燃烧不充分易产生烟。因此，作为民用燃气的液化石油气产品的烯烃含量越低越好，但目前尚没有关于清洁气产品中烯烃含量的准确界定。“清洁”在更多的时候仅是一个相对概念，通常是相对于深加工装置的原料而言，原料中的烯烃被消耗掉，剩余的以烷烃为主的液化气就被称作清洁液化石油气。以此类推，烯烃含量越低，液化石油气产品越清洁。

通常液化石油气的应用价值高低主要取决于其组成，不同深加工装置来源的液化气的应用价值差异很大。……