摘要
介绍了Lurgi甲醇制丙烯（MTP）工艺的技术特点及在神华宁夏煤业集团工业应用的情况。通过技术改造和优化，解决了激冷水泵汽蚀、工艺蒸汽中钠离子和丙烯中水含量超标等问题，提升了工艺蒸汽塔产能，实现了 MTP装置满负荷运行，但仍然存在 MTP反应器结构复杂、物料分布不均、工艺蒸汽塔蒸汽产能不足等问题。工业运行结果表明：丙烯收率比设计值低1．5～9．8百分点，而副产的液化气和燃料气收率偏高；副产的汽油馏分呈现正构烷烃含量低、芳烃含量高的特点，与常规FCC汽油组成差异较大；MTP 催化剂使用寿命小于8000 h，平均单程寿命仅为640～700 h，需要反复再生。
The characteristics and commercial application of Lurgi’s methanol-to-propylene （MTP） technology in Shenhua Ningxia Co,Ltd. was introduced. Through the technical improvement and opti-mization,some of the problems in this process,such as the cavitation of chilling water pump,the over standard Na＋amount in process steam and water in propylene were solved,resulting in improved capaci-ty of the process steam tower and full load operation of the MTP device. But there are still some prob-lems in the process：the complex structure of MTP reactors,the uneven distribution of materials,and the insufficient capacity of the process steam tower. The industrial operation results show that the pro-pylene yield is about 1. 5%-9. 8% lower than the designed value,while the yields of liquefied petrole-um gas and fuel gas are higher. Gasoline fraction obtained from Lurgi’s MTP reaction is characterized by low normal alkane and high aromatic content. The composition of the MTP gasoline is quite different from that of the conventional FCC gasoline. The total life of MTP catalyst is less than 8 000 h,and its regeneration cycles is only about 640-700 h.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2014年第3期46-50,共5页
Petroleum Processing and Petrochemicals
基金
国际科技与交流专项资助项目(No.2010DFB40440)
宁夏回族自治区科技支撑计划项目(2013)
