摘要
CaO基矿物质循环煅烧/碳酸化反应(CCR)分离CO2是一种减排CO2的有效方式.提出了把该方法由第1代增压流化床燃烧联合循环系统推广应用到第2代增压流化床燃烧联合循环系统中的思路.针对CaO基矿物质在循环CCR中碳酸化转化率的衰减,采用了乙酸调质CaO基矿物质的新方法,并提出用含乙酸的工业废水调质CaO基矿物质并回收丙酮的具有工业应用前景的工艺路线.对经乙酸调质的CaO基矿物质在不同反应条件下的循环碳酸化特性进行了研究,得到了碳酸化温度、煅烧温度和颗粒粒径等参数对调质产物循环碳酸化的影响规律.结果表明,CaO基矿物质经乙酸调质后具有更高的循环捕捉CO2能力和抗烧结性,作为一种新型、高效CO2吸收剂具有良好的应用前景.
CaO-based mineral calcinations/carbonation reaction （CCR） for CO2 sequestration is an effective way to capture CO2. The technique for CO2 abatement was proposed to apply to the second generation pressured fluidized bed combustion combined cycle （PFBC-CC） evolved from the first generation PFBC-CC. CaO-based mineral modified with acetic acid acted as a new CO2 sorbent to overcome the sharp decay of carbonation conversion for CaO-based mineral during CCR cycles. The promising industrial application way that CaO-based mineral was modified with the industrial wastes with acetic acid to capture CO2 effectively and the acetone could be reclaimed from the industrial wastes was put forward. The carbonations for CaO-based mineral modified with acetic acid were investigated under different reaction conditions. And the effects of parameters including carbonation temperature, calcinations tempera- ture and particle size on the cyclic carbonation for CaO-based mineral are obtained. The results show that CaO-based mineral modified with acetic acid as a CO2 sorbent has the greater CO2 cyclic capture capacity, the better anti-sintering performance, and is promising as a new and efficient CO2 sorbent.
出处
《沈阳工程学院学报（自然科学版）》
2008年第1期1-6,共6页
Journal of Shenyang Institute of Engineering:Natural Science
基金
国家重点基础研究计划(973计划)资助项目(2006CB705806)
