分子筛脱蜡联合装置扩能改造

为使抚顺石油化工公司石油三厂分子筛脱蜡联合装置生产正构烷烃能力由120kt/a扩大到150kg/a，对装置进行了改造。加热炉改用无机热管式空气预热器，引风机、鼓风机改用变频技术，使加热炉热效率提高7．2个百分点；采用浙江工业大学DJ－Ⅲ型复合塔盘对抽余液塔、抽出液塔、脱C10塔、脱C13塔的内构件进行技术改造。改造后的工业标定结果表明，产量可达155kt/a且产品质量可满足要求，装置能耗降低14．75％。

THE CAPACITY EXPANSION OFA MOLECULAR SIEVE DEWAXING COMPLEX

The normal paraffin production capacity of the molecular sieve dewaxing complex at No. 3 Refinery of Fushun Petrochemical Company was expanded from 120 kt/a to 150 kt/a by some equipment change. Heating pipe type air preheater was used in the heating furnace and the frequency modulation technique was employed in the induced draft fan and the air blower, which increased the heat furnace efficiency by 7.2%. Th e extraction and raffination column trays were also replaced by DJ-Ⅲ type comp lex trays, which were developed by Zhejiang University of Technology. After the revamping, th e normal paraffin production was up to 155 kt/a, and the energy consumption decr eased by 14.75%.