CryoCell低温CO_2捕集技术在高含CO_2天然气处理中的应用

Application of CryoCell CO_2 Capture Technology with Low Temperature in High CO_2 Natural Gas Treatment

当天然气中CO2含量较高时,需要对CO2采取地下封存措施。传统的CO2脱除技术是在低压下脱除气态的CO2,CO2封存过程能耗较高,CryoCell低温CO2捕集技术则是在低温下以液体的形式把CO2从天然气中脱除出来,然后将液态CO2用泵加压到地下封存所需要的压力储存起来,大大降低了CO2封存过程所需的能耗。文中分析了传统技术在处理高含CO2天然气时的局限性及CryoCell技术存在的优势,重点描述了CryoCell技术的工艺流程。CryoCell技术避开了传统酸性气体处理过程中的缺点,避免了水的消耗、化学药剂的使用和与腐蚀相关的一些问题,能耗和减排成本大大降低,可用于高含CO2气田。

When CO2 content in the natural gas is high,CO2 geo-sequestration is required.Conventional CO2 separation technologies remove CO2 at near ambient pressures,thus requiring substantial amount of compression to levels needed for geo-sequestration,it is a high energy consumption.CryoCell CO2 removal technology can capture CO2 storage or send for enhanced oil recovery,greatly reducing the energy consumption.The paper analyzes the limitations of the traditional technology and the advantage of CryoCell technology in the treatment of high CO2 gas,focusing on describing the process of the CryoCell technology.The CryoCell technology eliminates water consumption,reduces the usage of chemicals and the problems related with corrosion,greatly reduces the energy consumption and cost,and can be used for future development of high CO2 gas fields.