摘要
中国石油天然气股份有限公司广西石化分公司在3.5 Mt/a重油催化裂化装置设计中,对油浆系统、主风和烟气系统、蒸汽系统、低温热联合和热进料进行了优化设计,可使加工残炭高达7.95%的重油催化裂化装置设计能耗降低56.68 MJ/t。实际生产中,再生烟气中CO质量分数由4.2%提高至6.8%,降低CO焚烧炉补燃燃料气量2 000 m3/h,第二再生器密相温度由700℃降低至680℃,增产蒸汽18 t/h,分馏塔底温度由354℃降低至340℃,增产蒸汽11 t/h,催化能耗由设计的2 373.078 MJ/t降低至2 183.416 MJ/t,下降了189.662 MJ/t,节能效果显著。
Multiple optimizations have been made in slurry system,main air blower,flue gas system,steam generation system,low temperature heat integration and hot feed-in in the design of a 3.5 MM TPY RFCC unit for PetroChina Guangxi Petrochemical Company.In unit operation,CO content in the flue gas is increased from 4.2% to 6.8%,and the consumption of fuel gas in CO boiler is decreased by 2 000 m3/ h.The dense phase temperature in the second regenerator is reduced to 680 ℃ from 700 ℃ and additional 18 t / h steam is generated.Main fractionator bottom temperature is reduced to 340 ℃ from 354 ℃,and as a result additional 11 t / h of steam is produced.FCC unit energy consumption is reduced to 2 183.416 MJ / t from designed 2 373.078 MJ / t.The energy saving is significant.
出处
《炼油技术与工程》
CAS
2013年第7期57-60,共4页
Petroleum Refinery Engineering
关键词
催化裂化
节能
方法
fluid catalytic cracking
energy saving
method
