上流式加氢反应器内连续液相的控制方法  

CONTROL MEASURES OF MAINTAINING CONTINUOUS LIQUID-PHASE WITHIN UP-FLOW HYDROGENATION REACTOR

作　　者：刘凯祥[1] 李浩[1] 孙丽丽[1] 刘家明[1] 

机构地区：[1]中国石化工程建设公司,北京100101

出　　处：《石油炼制与化工》2012年第8期7-12,共6页Petroleum Processing and Petrochemicals

摘　　要：以柴油加氢精制装置多种工况的基本数据为计算基础,考察上流式反应器内液相体积分率的变化规律以及相关操作参数对液相体积分率的影响。结果表明,在上流式反应器内从催化剂床层入口到出口是液相体积分率逐渐增加的过程,操作压力、操作温度和补充氢的纯度对反应器内液相体积分率的影响很小,但循环比和注氢方式对其影响较大,液相体积分率随循环比的增加而增加,多点注氢方式可以提高催化剂床层的液相体积分率。反应器出口液相体积分率可以通过数学关联公式预测,以实现连续液相加氢生产的自动控制。Based on the basic data of a gas oil hydrotreating unit under various process conditions,the changing rule of liquid phase volume fraction in up-flow reactor and the effect of operation parameters on the liquid phase volume fraction are investigated.It is found that in an up-flow reactor,the liquid phase volume fraction increases along the inlet to the outlet of the catalyst bed gradually;the composition of make-up hydrogen,operation pressure and temperature only affect the liquid phase volume fraction slightly,yet recycle oil ratio and the feeding mode of make-up hydrogen have significant influence： the liquid phase volume fraction increases with the increase of recycle oil ratio and adopting multi-point feeding of make-up hydrogen can improve the liquid phase volume fraction effectively.The liquid phase volume fraction at the reactor outlet can be predicted by calculation using mathematical correlation equations,thus automated process control is made possible through DCS system to maintain stable operation of the unit.

关 键 词：连续液相加氢 上流式反应器 控制 柴油加氢精制 循环油 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]