节能减排技术在乙烯装置上的应用

介绍了上海石油化工股份有限公司乙烯装置节能减排技术改造的情况：①利用先进裂解技术对落后的裂解炉进行扩能改造;②采用专利技术降低排烟温度;③利用扭曲片管技术降低金属管壁的结焦速度;④采用干式气柜回收技术减少火炬气的燃烧排放;⑤应用先进控制技术优化操作;⑥应用凝液回收技术节约用水。经过改造,裂解炉燃料总量节省了3%;火炬气回收系统每年可回收相当于3×104t液化石油气的燃料气;装置运行平稳;节水效果明显。

Application of Energy Conservation and Emission Reduction Techniques in Ethylene Plants

This article describes Sinopec Shanghai Petrochemical Company＇s efforts to upgrade its ethylene unit for saving energy and reducing emissions.Major methods adopted by the company included：using advanced cracking techniques to expand the capacity of its cracking furnaces ;using patented technology to reduce exit gas temperature;using twisted-tape-tube technology to delay the coking on the metallic tube wall;using the dry seal gas holder recovering technology to reduce the emissions of flared gas;using advanced control techniques to optimize operation;using condensate recovery technology to reduce consumption of water.After the upgrade,the fuel consumption of the cracking furnace dropped by 3%,the flared gas recovery system recovers fuel gas equivalent to 3×10^4t of liquefied petroleum gas annually,the unit operates well and water consumption has dropped significantly.