Method and device for converting carbon dioxide in flue gas into natural gas
    3.
    发明授权
    Method and device for converting carbon dioxide in flue gas into natural gas 有权
    将烟道气中的二氧化碳转化为天然气的方法和装置

    公开(公告)号:US09193927B2

    公开(公告)日:2015-11-24

    申请号:US14522625

    申请日:2014-10-24

    摘要: A method for converting carbon dioxide in flue gas into natural gas using dump energy. The method includes: 1) transforming and rectifying a voltage of dump energy generated from a renewable energy plant, introducing the voltage-transformed and rectified dump energy into an electrolyte solution to electrolyze water therein to yield H2 and O2; 2) purifying industrial flue gas to separate CO2 therein and purifying CO2; 3) transporting H2 generated and CO2 to a synthesis equipment, allowing a methanation reaction between H2 and CO2 to happen to yield a high-temperature mixed gas with main ingredients of CH4 and water vapor; 4) employing the high-temperature mixed gas to conduct indirect heat exchange with process water to yield superheated water vapor; 5) delivering the superheated water vapor to a turbine to generate electric energy, and returning the electric energy to step 1); and 6) condensing and drying the mixed gas.

    摘要翻译: 使用倾倒能量将烟道气中的二氧化碳转化为天然气的方法。 该方法包括:1)对可再生能源厂产生的倾倒能量的电压进行变换和整流,将电压转换和整流的排放能量引入电解液中以电解水中的H2和O2; 2)净化工业烟气,分离二氧化碳,净化二氧化碳; 3)将生成的H 2和CO 2输送到合成设备中,使H 2和CO 2之间的甲烷化反应发生,产生与主要成分为CH 4和水蒸气的高温混合气体; 4)采用高温混合气体与工艺水进行间接热交换,产生过热水蒸气; 5)将过热水蒸气输送到涡轮机以产生电能,并将电能返回到步骤1); 6)冷凝干燥混合气体。