Abstract: 20，000 Nm³/h hydrogen production unit owned by Tahe Refining and Chemical Co.，Ltd. employs a steam hydrocarbon conversion and pressure swing adsorption（PSA）purification technology. This unit produces 11，055 Nm³ desorbed gas per hour，which is then fed into a reformer as fuel. The desorbed gas contains more than 50% CO₂，which does not participate in combustion，and is finally emitted into the atmosphere together with the flue gas（burnt product），resulting in carbon emissions. In 2020，a CO₂ recovery device was added to the hydrogen production unit，which recovers CO₂ using a new amino ethyl ethanol amine（AEEA）liquid. After being compressed and liquefied，the recovered CO₂ can be used for CO₂ flooding，with the remaining CO₂ returned to the reformer for combustion. This paper introduces the impacts of CO₂ recovery device and CO₂ recovery on process parameters，analyzes the problems arising after CO₂ recovery，and proposes corresponding solutions，providing a basis for the modification of this unit to realize complete recovery of CO₂ in the future

Key words: CO₂ recovery；hydrogen production unit；reformer, pressure swing adsorption（PSA）；flue gas

摘要： 塔河炼化20 000 Nm³/h水蒸汽烃类转化及变压吸附净化工艺（PSA）制氢装置每小时产生11 055 Nm³的解吸气进入转化炉作为燃料，解吸气中含有50%以上的CO₂不参与燃烧，与燃烧完的烟气混合排入大气造成碳排放。2020年在制氢装置内增设CO₂回收装置，通过新型羟乙基乙二胺液回收CO₂。回收的CO₂经过压缩液化，可用于油田驱油，余气则继续回转化炉燃烧。重点对CO₂回收装置、回收CO₂对工艺参数的影响等进行了描述，并对回收CO₂后出现的各种问题进行了分析，提出了相应的解决方案，为今后装置完全回收CO₂提供了改造的依据。

关键词: CO₂回收, 制氢装置, 转化炉, 变压吸附净化工艺, 烟气