为进一步降低我国天然气行业碳排放,开展了天然气管网融合可再生燃气技术路径研究。结合我国天然气发展现状与可再生燃气资源禀赋,利用天然气掺氢技术与沼气提纯生物天然气入网技术,可提高我国天然气管网中可再生能源的比例。研究表明,天然气掺氢技术具备大规模推广应用的技术可行性,现阶段通过评估后掺氢体积比可达到10%。沼气提纯后获得的生物天然气可满足进入天然气管网的要求。充分利用我国潜在的可再生燃气资源,预计2030年可实现碳减排约71 Mt/a。研究结果可为我国天然气绿色低碳转型提供技术参考。

The technology pathway to deliver renewable fuel gas in natural gas pipeline network is studied to further reduce carbon dioxide emission from consuming natural gas.Considering China's natural gas infrastructure situation and renewable fuel gas resources,adding hydrogen and biogas into China's natural gas pipeline network can increase the proportion of renewable energy delivered in China's natural gas pipeline network.Studies show that natural gas blending hydrogen technology has technical feasibility for large-scale promotion,and at present the volume ratio of hydrogen blended can reach 10% after technical evaluation.Biogas obtained after purification can meet the quality requirements for entering the natural gas pipeline network.By making full use of China's potential renewable fuel gas resources,it is expected that about 71 million tons per year of carbon dioxide emission can be reduced in 2030.Study result provides technical references for the green and low-carbon transition of natural gas use in China.

吴荣(1986-),男,硕士,高级工程师,研究方向为天然气与可再生燃气,wrong@gasheat.com.cn;曹权(1995-),男,硕士,助理工程师,研究方向为氢能及生物质能,通讯联系人,cquan@gasheat.com.cn。