重油催化裂化分馏塔结盐在线水洗技术的研究

摘要

重油催化裂化装置分馏塔结盐在线水洗技术是在装置满负荷运行条件下进行的塔顶循环段水洗技术.800 kt/a重油催化裂化装置分馏塔在线水洗运行结果表明:在线水洗技术有效地控制了分馏塔上部结盐,塔顶循环段运行稳定,塔顶循环段和柴油段无结盐现象;不同的塔顶循环物流含水量对汽油、柴油馏程基本没有影响;在线水洗过程中,塔顶循环物流含水量必须控制在50%以上,才能保证稳定的塔顶循环量.%The online water washing technology is the technology for removing salt deposition in the top circulation system of fractionating tower running under the conditions of full load operation.The application results in an 800 kt/a fractionator show that the salt deposition in the upper part of fractionator is effectively controlled, leading to a stable and reliable operation in the top circulation system, and no salt deposition exists;the online water washing with different water content has no impact on the distillation range of gasoline and diesel on specification.However, the water content must be controlled more than 50% to ensure the stability of the top circulation during the process.