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１概况延安炼油厂建有一套１５ｋｔ／ａ的气体分馏装置，为下游异丁基苯和聚丙烯提供原料。该装置的进料为催化裂化所产液化气，组成及杂质含量见表１。表１液化气组成及杂质含量项目实测值Ｃ°２／％２．６５Ｃ＝２／％３．５６Ｃ°３／％７．５４Ｃ＝３／％３０．６０?..
1 Overview Yan’an refinery has a 15kt / a gas fractionation unit for the downstream isobutylbenzene and polypropylene to provide raw materials. The feed of the device is liquefied gas produced by catalytic cracking, the composition and the content of impurities are shown in Table 1. Table 1 liquefied gas composition and impurity content of the project measured C ° 2 /% 2.65C = 2 /% 3.56C ° 3 /% 7.54C = 3 /% 30.60?