Abstract:

The harms of quench water that contains catalyst particles in a chemical device is introduced. Methods of removing micro solid particles from waste water is reviewed. By analysing the characteristics of quench water，various separation methods are compared. An approach with two-stage micro hydrocyclones to separate catalyst from quench water is proposed. Its first stage is for clarification and second stage for concentration. The operation principle and device structures of micro hydrocyclone are expounded. The operating condition of whole separation system is introduced. According to the equipment’s operating characteristic，the separation efficiency has reached 72% in optimal operating condition，which effectively removes the catalyst and makes liquid-solid micro hydrocyclone separation technology in industrialized coal chemical devices successful.

摘要：

回顾了某化工装置中急冷水夹带催化剂颗粒的危害及现阶段国内对含微细固体颗粒废水的分离方法，通过对急冷水特点的分析以及各种分离方法的比较，提出采用一级澄清二级浓缩的两级微旋流分离技术脱除急冷水中的催化剂的方法；阐述了微旋流分离器的工作原理及设备结构；介绍了整个分离系统的运行情况。根据装置的操作特点，通过对操作方法的优化，使分离效率达到72%，有效地脱除了急冷水中的催化剂，成功实现了液-固微旋流分离技术在工业化煤化工装置中的应用。