摘要
再生器是催化裂化(FCC)工艺中二氧化碳(CO_2)排放的主要单元。随着掺渣比的增加,再生单元热量过剩,CO_2排放随之增加。利用部分焦炭生产合成气或H_2,不仅可以供氢,而且能够收集CO_2、硫等有害物,减少排放。实验数据显示,在700℃左右气化待生剂上的焦炭,气体产物有效组分(CO+H_2)体积分数大于55%。对于加工2.0Mt/a原料油的重油催化裂化装置(RFCCU)来说,如果焦炭产率为10%,气化反应65%的焦炭,则具有生产9.8 kt/a H_2的潜力,如果分离系统回收CO_2,则可减少碳排放约60%。
The regenerator is a main carbon emission unit in FCC process. Nowadays, the regenerator produces excess heat and discharges more carbon dioxide to the atmosphere. Utilizing partial coke of FCC to produce syngas or hydrogen not only could offer hydrogen to hydroprocess, but also might reduce carbon and sulfur emission. The experiment data from fixed bed and fluidized bed reactor showed that the gasification of the coke on coked catalyst at about 700℃ could produce useful gas, which contains more than 55% carbon monoxide and hydrogen, means that a RFCC unit which can process 2.0 Mt/a of feed oil has the potential for producing about 9.8 kt/a of hydrogen, and reduces carbon emission by around 60%.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2011年第4期516-521,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
催化裂化(FCC)
气化
低碳
合成气
H2
fluid catalytic cracking （FCC）
gasification
low carbon
syngas
hydrogen
