【摘要】 为了解决甲醇制烯烃(MTO)急冷水中高浓度细微催化剂造成生产装置堵塞难题，结合深层过滤与旋流强化脱附技术，开发了沸腾床过滤装置并成功运用于MTO水洗系统。相比于中国科学院大连化学物理研究所开发的MTO(DMTO)装置，中石化(上海)石油化工研究院有限公司开发的MTO(SMTO)装置急冷水的悬浮物浓度更高，催化剂粒径更小同时分散性更好，虽不易发生堵塞但分离难度更大。对于DMTO装置急冷水，在进水悬浮物质量浓度为400～800 mg/L时，一级过滤出水降低至16～102 mg/L,二级过滤出水降低至7～16 mg/L。对于SMTO装置急冷水，在进水悬浮物质量浓度为4 500～9 500 mg/L时，一级过滤出水降低至100～862 mg/L,二级过滤出水降低至13～160 mg/L。沸腾床过滤设备采用外排急冷水进行过滤介质再生，无需额外消耗新鲜水，优异的悬浮物分离效果极大提高了急冷水回用率，降低了换热设备清洗频次和生产运维成本，为MTO工艺的高效运行提供了有力支持。更多还原

【Abstract】 In order to solve the problem of blockage of production equipment caused by high concentration of fine catalysts in MTO quench water, an ebullated bed filtration(EBF) unit was developed and successfully applied to MTO water system by combining deep filtration and cyclone enhanced desorption technology. Compared with the DMTO unit, the suspended solids content of the quench water in the SMTO unit is higher, the catalyst particle size is smaller and the dispersion is better. Although it is not easy to block, it is more difficult to separate. For the quench water of the DMTO unit, when the suspended solids content in the influent is 400—800 mg/L,the first-stage filtered effluent is reduced to 16—102 mg/L,and the second-stage filtered effluent is reduced to 7—16 mg/L. For the quench water of SMTO unit, when the suspended solids content in the influent is 4 500—9 500 mg/L,the effluent of primary filtration is reduced to 100—862 mg/L,and the effluent of secondary filtration is reduced to 13—160 mg/L. The EBF unit uses discharged quench water to regenerate the filtration medium without additional consumption of fresh water. The excellent separation effect of suspended solids greatly improves the reuse rate of quench water, reduces the cleaning frequency of heat exchange equipment and the cost of production and operation, and provides strong support for the efficient operation of methanol to olefins process.更多还原