摘要
测算了实际加工量为930万吨/年的典型脱碳型炼厂生产流程的能耗与碳排放,结果表明,该厂的单位综合能耗为61.7 kgoe/t,存在节能降耗空间;催化裂化装置和天然气制氢装置造成的工艺排放占全炼厂CO_(2)排放总量的58.9%,是脱碳型炼厂最大的碳排放源,该厂的碳排放因子为0.208 t/t。基于测算结果,针对性提出了减碳策略:兼顾经济效益和减碳目标,综合权衡炼厂原料结构、产品分布及质量;优化换热网络,推动燃料低碳化以及生产用能电力化(甚至绿电化);从催化剂改进和进料优化入手减少催化裂化催化剂生焦;改进加氢工艺,减少循环氢系统能耗;推广气化联合循环发电技术,使化石燃料制氢装置承担公用工程岛的功能;在碳排放集中的装置增加CO_(2)捕集、封存与利用设施。
The energy consumption and carbon emissions of a typical decarburized refinery with an annual actual processing capacity of 9.3 million tons were calculated,and the results showed that fuel combustion,catalyst coking and electricity accounted for 42.17%,41.32% and 18.28% of the refinery's comprehensive energy consumption,respectively,with the unit comprehensive energy consumption of the refinery at 61.7kgoe/t.The results indicate the refinery has energy saving potential.Emissions caused by the catalytic cracking unit and hydrogen production unit from natural gas accounted for 58.9% in total CO_(2) emissions as the largest emission sources.Carbon factor of the refinery is 0.208 t/t.Based on the results above,a targeted carbon reduction solution is proposed,including optimizing raw material structure,product distribution and quality of the refinery;optimizing the heat exchange network,promoting the low-carbonization of fuel and the electrification of production energy(and even green electrification);reducing the coking of catalytic cracking catalysts from catalyst improvement and feed optimization;developing the hydrogenation process to reduce the energy consumption of the circulating hydrogen system;promoting the gasification combined cycle power generation(IGCC)technology;and increasing CCUS facilities in the main emission units.
作者
曲宏亮
Qu Hongliang(SINOPEC Beijing Yanshan Company,Beijing 102500,China)
出处
《当代石油石化》
CAS
2022年第5期26-32,共7页
Petroleum & Petrochemical Today
关键词
碳排放
脱碳型炼油厂
节能
减排
carbon emissions
decarburized refinery
energy saving
emission reduction
