Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (7): 52-55.

Previous Articles     Next Articles

Research on the synergistic purification of MTO quench water and wash water

Sun Haocheng, Chen Chuanshuai, Hui Jun, Wu Wei   

  1. SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian, Liaoning 116045
  • Online:2025-07-15 Published:2025-07-21

MTO急冷-水洗循环水协同净化研究

孙浩程, 陈传帅, 回军, 吴巍   

  1. 中石化（大连）石油化工研究院有限公司, 辽宁省大连市116045
  • 通讯作者:
  • 作者简介:孙浩程, 助理研究员, 硕士研究生, 2016年毕业于中国石油大学(华东), 主要研究方向为固体废弃物处理处置与资源化。联系电话: 0411-39699163, E-mail: sunhaocheng.fshy@sinopec.com
  • 基金资助:
    中国石化科技部项目（320131-1）

PDF

Abstract:

As an important part of the coal-based methanol-to-olefins (MTO) process, the quench water-washing system often suffers from frequent blockage of equipment such as heat exchangers and towers caused by the entry and accumulation of catalyst fines and heavy hydrocarbons, which affects the long-term operation of the unit. To address these issues, the purification effects of quench water and wash water under different chemical agents and filtration conditions were investigated. It was found that after adding 0.20‰ of reagent A and 0.002‰ of anionic reagent to the quench water, magnetically stirring for 1 min, and then flowing through a filter with a bed height of 10 cm at a flow rate of 200 mL/min, the suspended solids and turbidity decreased from 2115 mg/L and 1178 NTU to 15 mg/L and 0.95 NTU, respectively. The obvious purification effect provides strong support for the stable operation of the subsequent quench-water washing system.

Key words: MTO unit, quench and wash circulating water, synergistic purification, reagent, suspended solid matter, turbidity

摘要：

急冷-水洗系统作为MTO（煤基甲醇制烯烃）工艺重要的组成部分，常因催化剂细粉和重烃类物质的进入与累积，造成换热器、塔器等设备出现频繁堵塞，影响装置长周期运行。针对上述问题，探究了不同药剂和过滤处理条件下的急冷水和水洗水净化效果，发现急冷水在添加体积分数0.20‰和0.002‰的药剂A和阴离子药剂并磁力搅拌1 min后，以200 mL/min的流量流经含10 cm床层高度的过滤器后，其悬浮物浓度和浊度由初始的2115 mg/L和1178 NTU分别降至15 mg/L和0.95 NTU，净化效果明显，为后续急冷-水洗系统稳定运转提供了有力支撑。

关键词: MTO装置, 急冷-水洗循环水, 协同净化, 药剂, 悬浮物, 浊度