填埋沼气提纯装置废气制备高纯液态CO_(2)方案设计  

Design of High Purity Liquid CO2 Preparation Scheme from Waste Gas of Landfill Biogas Purification Device

作　　者：杨昆 YANG Kun

机构地区：[1]中化学南方建设投资有限公司,广东广州510420

出　　处：《化工设计通讯》2024年第3期141-145,共5页Chemical Engineering Design Communications

摘　　要：对国内某生活垃圾填埋场沼气提纯制备LNG装置的废气深度处理进行方案设计,创新性采用“压缩+固体吸附+低温分离+催化氧化+固体吸附”组合式工艺,其通过对填埋气体中的H_(2)O、CH_(4)、N_(2)主要杂质及H_(2)S、甲硫醇、油分、O_(2)、CO等痕量杂质组分进行多步分离,产出99.99%和99.999%高纯液态二氧化碳(CO_(2)),经济效益可观,进一步完善碳循环,强化碳资源的深度开发利用,为实现“双碳”目标提供强有力的技术支撑。A scheme design was carried out for the advanced treatment of waste gas from a domestic landfill site's biogas purification and LNG preparation device.The innovative combination process of"compression+solid adsorption+low-temperature separation+catalytic oxidation+solid adsorption"was adopted.By multi-step separation of the main impurities of H_(2)O,CH_(4),N_(2) in the landfill gas and trace impurities such as H2S,methylthiol,oil,O_(2),CO,etc.,99.99% and 99.999% high-purity liquid carbon dioxide(CO_(2))were produced,The economic benefits are considerable,further improving the carbon cycle,strengthening the deep development and utilization of carbon resources,and providing strong technical support for achieving the"dual carbon"goals.

关 键 词：高纯CO_(2) 沼气提纯 LNG废气 

分 类 号：X781[环境科学与工程—环境工程]