中压加氢改质催化剂再生及其反应性能评价

摘要

中海炼化惠州炼化分公司3.6 Mt/a煤柴油加氢裂化装置采用中国石化石油化工科学研究院开发的中压加氢改质MHUG技术及其配套的RN-10B精制剂和RT-5裂化剂,加工环烷基直馏煤柴油和催化裂化柴油的混合油,主要生产高芳烃潜含量石脑油、3号喷气燃料和满足国V排放标准的清洁柴油产品.在该装置第一周期连续稳定运转了5年6个月后停工检修,对催化剂进行器外再生,再生后催化剂的运转结果表明:经过长周期运转和再生后,RN-10B再生剂与新鲜剂的脱硫、脱氮活性相当;RT-5再生剂的活性和提高十六烷值能力与新鲜剂相当;RN-10B和RT-5催化剂活性稳定性良好,再生剂活性损失小,产品分布和产品性质达到或优于设计值,可满足长周期稳定生产需要.%MHUG hydro-upgrading technology with hydrorefining catalyst RN-10B and hydrocracking catalyst RT-5 was applied in a 3.6 Mt/a hydrocracking unit in CNOOC Huizhou Refining & Petrochemicals Company using the mixture of naphthenic straight-run gasoline/diesel and MIP diesel as feedstock,the main products are naphtha,3 # jet fuel and national V diesel.The ex-situ regeneration of the catalysts was conducted after continuous operation for 5 years and 6 months.The regenerated catalysts still show good activities for HDS,HDN,and cetane number improvement,equals to that of fresh one,indicating the good activity stability and regeneration performance of both the catalysts.The product distribution reaches or even better than the design value,showing the better long term operation ability of the catalysts.