神华甲醇制烯烃技术的工业化应用

Industrial application of Shenhua methanol to olefin technology

神华新疆煤化工有限公司甲醇制烯烃装置是使用SHMTO工艺的首套装置,同时使用了自主研发的MTO催化剂,其成功投产,标志着SHMTO工艺实现了工业化应用。详细介绍了SHMTO工艺的特点及工业化应用情况:SHMTO工艺反、再两器采用同轴布置,降低了催化剂的磨损率;反应器内设置了分布板、格栅,强化了甲醇分布效果、改善了反应器内流化状况;反应器设置外取热器调节反应温度等。工业化运行结果表明,SHMTO工艺双烯选择性高、甲醇单耗低,装置运行平稳,水洗水固含量低,缓解了水系统固含量高、蜡状物析出等引起的换热器堵塞的长周期问题。

The methanol-to-olefin plant of Shenhua Xinjiang Coal Chemical Co., Ltd.is the first device using SHMTOteehnolog2c.At the same time, it uses the self-developed MTO eatalyst, whieh is sueeessfully put into produetion, whiehindieates that the SHMTO process has realized industrial applieation.The eharaeteristies of the SHMTO proeess and theindustrial applieation are introdueed in detail： the SHMTO proeess is reversed and the two deviees are eoaxially arrangedto reduce the wear rate of the catalyst; the distribution plate and the grid are arranged in the reactor, and the methanoldistribution effect is enhanced and improved.The fluidization condition in the reactor; the reactor is provided with anexternal heat extraetor to adjust the reaetion temperatm＇e and the like.The industrial operation resuhs show that the SHMTOprocess has high selectivity for diene, low methanol eonsmnption, stable operation of the device, low solid content ofwater washing, and alleviates the long period of heat exchanger blockage caused by high solid content of water system andprecipitation of wax.problem.