丙烷裂解与丙烷脱氢路线技术经济及安全性分析

液化气中丙烷既可作为优质烯烃裂解原料也可脱氢增产丙烯。以320 kt/a原料处理规模的丙烷裂解和丙烷脱氢工艺为考察对象，分别采用Aspen Plus软件进行了丙烷裂解及丙烷脱氢两种工艺流程模拟及工艺参数优化，通过提取原料消耗、公用工程消耗、工艺操作参数、化学品特性等信息进行技术经济安全性比较；若丙烷裂解以双烯（乙烯和丙烯）、丙烷脱氢以丙烯作为产品，两种工艺的产品收率分别为80.3%和84.4%，产品能耗为4.6 MW/t、4.4 MW/t；丙烷裂解与丙烷脱氢火灾爆炸指数（F&EI）最大的设备分别为裂解炉和丙烯精馏塔，F&EI分别为185.6和125.7。

TECHNO-ECONOMIC AND SAFETY ANALYSIS OF PROPANE CRACKING AND DEHYDROGENATION PROCESSES

Propane in liquefied gas can be used as a high-quality olefin cracking or dehydrogenation feed to increase propylene production. Taking a cracking and a dehydrogenation process with the same capacity of 320kt/a as study objectives, the simulation and main operation parameters were performed and optimized by Aspen Plus software, respectively. Raw material consumption, utilities consumption, process operating parameters and chemical properties are used to analyze the techno-economic and safety of two processes. If the propane cracking process uses diene (ethylene and propylene) and the propane dehydrogenation process uses propylene as products, the total yield of the two processes is 80.3% and 84.4% respectively. The energy consumption per unit product is 4.6 MW/t and 4.4MW/t, respectively. The Dow’s fire and explosion index of the most dangerous equipment, propane cracker and the propylene distillation column is 185.6 and 125.7, respectively.