Engineering, environmental and economic performance evaluation of high-gravity carbonation process for carbon capture and utilization
Engineering, environmental and economic performance evaluation of high-gravity carbonation process for carbon capture and utilization
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DOI：
10.1016/j.apenergy.2016.02.103
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发表时间：
2016-05
期刊：
影响因子：
11.2
通讯作者：
S. Pan;A. Lafuente;P. Chiang
中科院分区：
文献类型：
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作者：
S. Pan;A. Lafuente;P. Chiang
炉渣和废水的多废物处理可以与炼钢工业中通过超重力碳酸化（即，HiGCarb）方法。在这项研究中，HiGCarb工艺综合评价的工程，环境和经济（3E）三角模型。HiGCarb工艺的原料CO2可以直接从工业烟囱中获得，无需额外的CO2浓缩和运输。反应后的炼钢炉渣，即，碱性氧气炉渣（BOFS）适合作为水泥替代材料，避免了水泥工业的环境负担，也是CO2密集型排放源。通过在炼钢和水泥行业之间建立废物变资源供应链，可以实现显著的环境效益。生命周期评估表明，HiGCarb工艺的CO2净捕获量为282 kg-CO2/t-BOFS，同时由于产品利用率，CO2避免量为997 kg-CO2/t-BOFS。此外，通过HiGCarb工艺处理的收益估计为20.2-23.2美元/吨BOFS。根据3E三角形模型，HiGCarb工艺由于其高的整体工程性能而具有环境前景和经济可行性，这使得其适合作为工业中潜在的CO2吸收器。
Multi-waste treatment of slag and wastewater can be combined with CO2capture in the steelmaking industry by the high-gravity carbonation (i.e., HiGCarb) process using a rotating packed bed. In this study, the HiGCarb process is comprehensively evaluated by an engineering, environmental and economic (3E) triangle model. The feedstock CO2for the HiGCarb process can be obtained directly from the industrial stacks, eliminating the need for additional CO2concentration and transportation. The reacted steelmaking slag, i.e., basic oxygen furnace slag (BOFS), is suited as cement substitution material, avoiding environmental burden from the cement industry, also a CO2-intensive emission source. Significant environmental benefits can be realized by establishing the waste-to-resource supply chain between the steelmaking and cement industries. The life-cycle assessment shows a net CO2capture amount by the HiGCarb process of 282 kg-CO2/t-BOFS, accompanied by a CO2avoidance of 997 kg-CO2/t-BOFS due to the product utilization. Moreover, the amount of revenue gained was estimated to be 20.2–23.2 USD/t-BOFS treated by the HiGCarb process. According to the 3E triangle model, the HiGCarb process is shown to be environmentally promising and economically feasible due to its high overall engineering performance, which makes it suitable as a potential CO2sink in industry.