CDAlky■烷基化反应器填料层压差上升问题的分析与处理措施

ANALYSIS AND TREATMENT MEASURES FOR THE INCREASE OF PACKING LAYER PRESSURE DIFFERENCE IN CDAlky■ ALKYLATION REACTOR

烷基化工艺技术是生产清洁燃料的重要炼油技术,一般采用硫酸法烷基化CDAlky■静态混合反应器技术。然而硫酸法烷基化反应工艺在运行时仍存在一些问题,如反应器填料层压差上升导致装置运行负荷降低,严重影响装置产能。基于此,从初始填料层压差、原料杂质含量、循环酸过滤器精度、机封白油杂质含量4个方面对可能影响填料层压差上升的因素进行排查,并相应地提出了处理措施,有效解决了CDAlky■烷基化填料层压差上升的问题,可为行业内的其他装置技术人员提供技术参考。

Alkylation technology is an important oil processing technology for producing clean fuels,which usually adopts sulfuric acid alkylation of CDAlky■ static mixing reactor technology.However,there are still some problems in the process of sulphuric acid alkylation,for example,the increase of the pressure difference of the packed bed in the reactor leads to the decrease of the operating load of the unit,which seriously affects the production capacity of the unit.In view of this problem,the factors which might affect the increase of the pressure difference of the packing layer were investigated from four aspects:the initial pressure difference of the packing layer,the impurity content in raw materials,the precision of the circulating acid filter and the impurity content in the machine-sealed white oil.The treatment measures were put forward accordingly,which could effectively solve the problem of the increasing pressure difference of CDAlky■ alkylated packing layer,and provide technical reference for other units.