柴油加氢精制微气泡反应器工程技术开发有关问题探析  

Discussion on engineering technology development of micro-bubble reactor for diesel hydrorefining

作　　者：李立权 陈崇刚 赵颖 Li Liquan;Chen Chonggang;Zhao Ying(SINOPEC Guangzhou Engineering Co.,Ltd.,Guangzhou,Guangdong 510620)

机构地区：[1]中石化广州工程有限公司,广东省广州市510620

出　　处：《炼油技术与工程》2021年第10期6-11,共6页Petroleum Refinery Engineering

基　　金：中国石化科研攻关合同(121013-1)。

摘　　要：工业运行的柴油加氢精制装置反应器主要有气、液并流向下的下行床反应器(TBR)和气、液并流向上的上行床反应器(FBR)两种,TBR多在氢油比为300-600的条件下以滴流床方式运作,FBR多在氢油比为50-80的条件下以液相循环方式运行,两者各有优点和缺点。大幅提高气含率的微气泡发生器开发成功后,某企业柴油加氢精制装置将TBR改造为微气泡强化FBR,将H_(2)气泡尺寸从毫米-厘米级调控为微米级,数十倍地提高了气、液相界面积。探讨了微气泡环境下反应物料的物性参数及热力学性质计算,将氢油比为300-600的FBR设计为带限位的膨胀床,开发了以试验和CFD(计算流体力学)模拟为基础的FBR系列化反应器内构件(SLMG-1),并对工程技术开发过程中遇到的问题进行了探析。The diesel hydrofining reactors in industrial operation mainly have two modes:the downcomer reactor(TBR)with gas-liquid flowing downward and the upcomer reactor(FBR)with gas-liquid flowing upward.The TBR mostly operates in trickle-bed mode when the hydrogen to oil ratio is 300-600,while the FBR mostly operates in liquid phase circulation mode when the hydrogen to oil ratio is 50-80.Both have advantages and disadvantages.After the successful development of micro-bubble generator which could increase the gas holdup greatly,the diesel hydrofining unit in an enterprise was transformed from TBR into micro-bubble strengthening FBR.The H_(2) bubble size was adjusted from millimeter-centimeter level to micron level,which increased the gas-liquid interface area dozens of times.The calculation of physical parameters and thermodynamic properties of reaction materials in micro-bubble environment are discussed.The FBR bed with hydrogen to oil ratio 300-600 is designed as an expansion bed with limit.The internals of FBR series reactor(SLMG-1)based on test and CFD simulation are developed,and the problems encountered in the process of engineering technology development are studied.

关 键 词：柴油加氢精制 微气泡反应器 大氢油比 床层膨胀率 反应器内构件 

分 类 号：TE966[石油与天然气工程—石油机械设备]