甲醇制烯烃装置水系统运行问题及解决方案

doi:10.11894/iwt.2019-0555

工业水处理 ›› 2020, Vol. 40 ›› Issue (7): 120-124. doi: 10.11894/iwt.2019-0555

• 经验交流 • 上一篇

甲醇制烯烃装置水系统运行问题及解决方案

薛晓彬¹(),齐欢²,陈建琦³,马世浩³,刘冰³,党志宏³,吕文杰³

1. 陕西延长石油延安能源化工有限责任公司, 陕西延安 727500
2. 陕西延长中煤榆林能源化工有限公司, 陕西榆林 718500
3. 华东理工大学化学工程联合国家重点实验室, 上海 200237

收稿日期:2020-03-23 出版日期:2020-07-20 发布日期:2020-07-21
作者简介:薛晓彬(1979-), 工程师。E-mail:439497091@qq.com

Problems and solutions of water unit in methanol to olefins system

Xiaobin Xue¹(),Huan Qi²,Jianqi Chen³,Shihao Ma³,Bing Liu³,Zhihong Dang³,Wenjie Lü³

1. Shaanxi Yanchang Petroleum Yan'an Energy Chemical Industry Co., Ltd., Yan'an 727500, China
2. Shaanxi Yanchang Coal Yulin Energy and Chemical Co., Ltd., Yulin 718500, China
3. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2020-03-23 Online:2020-07-20 Published:2020-07-21

摘要/Abstract

摘要：

甲醇制烯烃（MTO）技术是现代煤化工核心技术之一。甲醇制烯烃装置水系统是整个装置的薄弱环节之一，水系统运行是否稳定，会直接影响整个装置长周期运行效果。以DMTO甲醇制烯烃工艺为基础，概述了DMTO装置内水系统工艺流程和水质特征，综述了水系统运行时所出现的问题及解决方案。

关键词: 甲醇制烯烃, 急冷塔, 水洗塔, 旋流分离

Abstract:

Methanol to olefins(MTO) technology is one of the core technologies of modern coal chemical industry. The water unit is one of the weak links in MTO system. Whether the water unit is stable or not will directly affect the longterm operation of the entire plant. Based on DMTO methanol to olefins process, the process flow and water quality characteristics of water system in DMTO system were summarized, then the problems and solutions during the operation of the water system are proposed.

Key words: methanol to olefins, quench tower, washing tower, cyclonic separate

中图分类号:

TQ085

薛晓彬,齐欢,陈建琦,马世浩,刘冰,党志宏,吕文杰. 甲醇制烯烃装置水系统运行问题及解决方案[J]. 工业水处理, 2020, 40(7): 120-124.

Xiaobin Xue,Huan Qi,Jianqi Chen,Shihao Ma,Bing Liu,Zhihong Dang,Wenjie Lü. Problems and solutions of water unit in methanol to olefins system[J]. Industrial Water Treatment, 2020, 40(7): 120-124.

https://www.iwt.cn/CN/Y2020/V40/I7/120

图/表 5

图1 DMTO水系统工艺流程
1—急冷塔；2—急冷水空冷器组；3—急冷水换热器组；4—一级旋液分离器；5—二级旋液分离器；6—急冷水过滤器；7—水洗塔；8—水洗水空冷器组；9—水洗水换热器组；10—旋流除油器；11—沉降罐；12—水洗水过滤器；13—汽提塔。

图2 急冷水中废催化剂含量及平均粒径变化

图3 水洗系统堵塞物气相色谱-质谱图

图4 沸腾床分离器悬浮物分离效果

图5 某甲醇制烯烃水洗系统工艺流程
1—水洗塔；2—上返塔旋流除油器；3—中返塔旋流除油器；4—旋流除油器；5、6—换热器；7—空冷器；8~11—泵。

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