摘要
中国石油大学重质油国家重点实验室自行设计研制了一种工业催化裂化装置沉降器在线取样系统,对用该系统取得的数据进行分析,结果表明,重油催化裂化过程中,汽提段内物理汽提与化学反应并存,在汽提过程中,催化剂上携带的重质烃一部分发生裂化反应生成较轻的组分,一部分发生脱氢缩合反应生成大量的氢气;沉降器中取得的液体样品中含有大约10％的重油,其终馏点在525℃左右,在工业沉降器内操作条件下,这部分重组分将冷凝形成液滴,导致沉降器结焦;沉降器空间中的催化剂在汽提段被粗略地汽提过,催化剂上仍附着着一些重质烃。
The state Laboratory of Heavy Oil Processing of China University of Petroleum has developed and designed an on-line sampler for commercial RFCC disengager. The analysis results of the samples shows that the physical stripping and chemical reaction occur at the same time in the RFCC stripper. In the stripping process, some of heavy hydrocarbons carried by catalysts are converted into light hydrocarbons by cracking reactions and some into hydrogen by dehydrogenation condensation reactions, The liquid samples from disengager contain about 10 t% of heavy hydrocarbons whose end point is about 525 ℃. Under the commercial operating conditions of the disengager, these heavy hydrocarbons will condense to form droplets, and ultimately result in coking. The catalysts in the disengager are incompletely stripped and a few heavy hydrocarbons still adhere to the catalysts.
出处
《炼油技术与工程》
CAS
北大核心
2007年第4期1-4,共4页
Petroleum Refinery Engineering
基金
国家自然科学基金资助项目(批准号:20406013)
中国石化股份有限公司资助项目(批准号:105045)
关键词
垦油催化裂化
沉降器
在线取样
产品分布
residue fluid catalytic cracking, disengager, on-line sampling, product slate
