CO2 Capture Performance of Mesoporous Synthetic Sorbent Fabricated Using Carbide Slag under Realistic Calcium Looping Conditions

CO2 Capture Performance of Mesoporous Synthetic Sorbent Fabricated Using Carbide Slag under Realistic Calcium Looping Conditions
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在实际钙循环条件下使用电石渣制造的介孔合成吸附剂的 CO2 捕集性能

DOI:
10.1021/acs.energyfuels.7b00676
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发表时间:
2017-06
期刊:
影响因子:
5.3
通讯作者:
Duan Lunbo
Duan Lunbo
中科院分区:
工程技术3区
文献类型:
--
作者:
Ma Xiaotong;Li Yingjie;Chi Changyun;Zhang Wan;Shi Jiewen;Duan Lunbo

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钙环用于工业减排在技术经济上是可行的。电石渣是聚氯乙烯(PVC)工业产生的废弃物,是低成本钙基二氧化碳脱硫剂的理想候选者。以高铝水泥、电石渣和生物柴油副产物为原料,制备了一种富含中孔的新型合成脱硫剂,以克服钙基脱硫剂吸收二氧化碳的能力随碳化/焙烧循环次数的增加而损失的问题。考察了合成脱硫剂在CO2浓度高、温度高的苛刻焙烧条件下的CO2捕集能力,接近工业应用的实际气氛。讨论了高铝水泥加入量、生物柴油加入量副产物、焙烧条件、碳化气氛中水蒸气加入量对合成脱硫剂捕集CO2的影响。结果表明,CaO质量分数为90wt%的合成吸附剂在30℃时具有最大的CO2捕集能力,约为0.27g/g。
Calcium looping is techno-economically feasible for industrial CO2 reduction. Carbide slag as a waste from the PVC (polyvinyl chloride) industry is a good candidate for low-cost calcium-based CO2 sorbents. A novel synthetic sorbent with rich mesopores was fabricated from high alumina cement, carbide slag, and byproduct of biodiesel, in order to overcome the loss in CO2 capture capacity of calcium-based sorbents with the number of carbonation/calcination cycles. The CO2 capture capacities of synthetic sorbents were examined under the severe calcination condition of high CO2 concentration and high temperature, which is close to the actual atmosphere for industrial applications. The effects of high alumina cement addition, byproduct of biodiesel addition, calcination condition, and steam addition in carbonation atmosphere on CO2 capture by the synthetic sorbents were also discussed. Results show that the synthetic sorbent with 90 wt % CaO achieves the highest CO2 capture capacity of about 0.27 g/g after 30 c...
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