Oxy-combustion is a feasible CO₂ capture method in the power and heat generation sector. This paper aims to propose a methodology for assessing two oxygen production technologies for small-scale oxy-combustion units: i) two-bed pressure swing adsorption (PSA), and ii) liquid oxygen delivery (LOX) for any local conditions, including the greenhouse gas (GHC) footprint for the oxygen that is produced. An analysis of PSA technology and LOX technology was carried out for the Czech Republic and for Germany, where the electricity, labor costs, and greenhouse gas (GHC) emission factors of electrical power differ considerably, but the equipment costs are similar.

The analysis always has to be based on local prices, especially on the electricity price that is available for consumers operating PSA units and the price for liquid oxygen delivery, and also GHC emission factors for the electric energy produced in a given area or country. Depending on the local conditions, we may reach completely different conclusions concerning the technology that will be chosen for oxygen supply.

氧燃烧是在电力和热产生领域中可行的CO ₂捕集方法。本文旨在提出一种评估小型氧气燃烧装置的两种制氧技术的方法：i）两床变压吸附（PSA），以及ii）在任何局部条件下的液态氧输送（LOX），包括产生的氧气的温室气体（GHC）足迹。对捷克共和国和德国的PSA技术和LOX技术进行了分析，这两个国家的电力，人工成本和温室气体（GHC）的电力排放因子相差很大，但设备成本却相似。

分析必须始终基于本地价格，尤其是基于运行PSA装置的消费者可获得的电价和液氧输送价格，以及给定地区或国家/地区生产的电能的GHC排放因子。根据当地条件，我们可能会针对氧气供应所选择的技术得出完全不同的结论。