碳封存是减缓全球变暖的关键技术。本研究利用不同质量分数生物炭替代普通水泥,制造生物炭混凝土,用C20强度标号混凝土作对照,比较分析生物炭混凝土基本性能及碳封存效益。当生物炭替代水泥为1%,生物炭混凝土强度超过对照9.77%;当替代...碳封存是减缓全球变暖的关键技术。本研究利用不同质量分数生物炭替代普通水泥,制造生物炭混凝土,用C20强度标号混凝土作对照,比较分析生物炭混凝土基本性能及碳封存效益。当生物炭替代水泥为1%,生物炭混凝土强度超过对照9.77%;当替代水泥为5%,生物炭混凝土强度和对照强度相当;当替代水泥量为6%~30%时,生物炭混凝土强度下降,但仍然大于C20混凝土强度国家标准。生物炭混凝土补加水量、饱和吸水量随生物炭替代量增加而增加,坍落度和密度则下降。生物炭混凝土满足C20、C25和C30混凝土强度要求条件下,在全国新增建筑中推广,每年可封存4.95 ×1010 kg CO2,在现有建筑改造中应用,可封存1.73 ×1012 kg CO2,相当于每年增加1.5‰我国现有森林面积。生物炭混凝土是封存碳的新方法,具有方法简单、成本低、封存时间长,能处理有机固体废弃物的特点。展开更多
The current status and trend of CO2 emission from coal-fired power plants in China are introduced. Main flue gas decarbonization technologies and their prospective of applications in China are discussed in two separat...The current status and trend of CO2 emission from coal-fired power plants in China are introduced. Main flue gas decarbonization technologies and their prospective of applications in China are discussed in two separate parts-capture and sequestration. It is stated that the selection of CO2 capture and sequestration technologies relates closely with the geographical location of power plants, with the destination of CO2 being the key. Further, it is suggested that industrialized test centers or test platforms of national or industrial level should be set up.展开更多
文摘碳封存是减缓全球变暖的关键技术。本研究利用不同质量分数生物炭替代普通水泥,制造生物炭混凝土,用C20强度标号混凝土作对照,比较分析生物炭混凝土基本性能及碳封存效益。当生物炭替代水泥为1%,生物炭混凝土强度超过对照9.77%;当替代水泥为5%,生物炭混凝土强度和对照强度相当;当替代水泥量为6%~30%时,生物炭混凝土强度下降,但仍然大于C20混凝土强度国家标准。生物炭混凝土补加水量、饱和吸水量随生物炭替代量增加而增加,坍落度和密度则下降。生物炭混凝土满足C20、C25和C30混凝土强度要求条件下,在全国新增建筑中推广,每年可封存4.95 ×1010 kg CO2,在现有建筑改造中应用,可封存1.73 ×1012 kg CO2,相当于每年增加1.5‰我国现有森林面积。生物炭混凝土是封存碳的新方法,具有方法简单、成本低、封存时间长,能处理有机固体废弃物的特点。
文摘The current status and trend of CO2 emission from coal-fired power plants in China are introduced. Main flue gas decarbonization technologies and their prospective of applications in China are discussed in two separate parts-capture and sequestration. It is stated that the selection of CO2 capture and sequestration technologies relates closely with the geographical location of power plants, with the destination of CO2 being the key. Further, it is suggested that industrialized test centers or test platforms of national or industrial level should be set up.