随着全球工业化进程的加快,二氧化碳的大量排放导致气候变暖。如何有效解决碳排放问题已成为全球的研究热点,二氧化碳捕集封存(Carbon Capture Utilization and Storage,CCUS)技术的应用可有效改善碳排放问题。目前,全球许多国家和地区...随着全球工业化进程的加快,二氧化碳的大量排放导致气候变暖。如何有效解决碳排放问题已成为全球的研究热点,二氧化碳捕集封存(Carbon Capture Utilization and Storage,CCUS)技术的应用可有效改善碳排放问题。目前,全球许多国家和地区已建有不同规模的CCUS项目,对CCUS技术和项目进行了系统总结。分析结果表明,CCUS项目在解决碳排放问题上有着较好的工业前景。展开更多
为了应对全球气候变暖这一国际性难题,CO_2捕集、利用和封存(Carbon Capture,Utilization and Storage,CCUS)技术应运而生,而石油石化行业作为高碳化行业,将面临更大的挑战。调研了全球石油石化行业在CCUS技术领域研究取得的最新进展,...为了应对全球气候变暖这一国际性难题,CO_2捕集、利用和封存(Carbon Capture,Utilization and Storage,CCUS)技术应运而生,而石油石化行业作为高碳化行业,将面临更大的挑战。调研了全球石油石化行业在CCUS技术领域研究取得的最新进展,列举了我国开展的一系列相关技术研发和示范项目,进一步阐述了该行业所取得的技术成果。提出了一套针对石油石化行业CCUS的技术方案,利用燃气锅炉产生的烟气与天然气进行三重整反应,将产生的合成气用于回注或者合成二甲醚(DME,分离出的CO_2用于驱油),并对这两种利用方式进行了经济性比较。在此基础上,提出了一种环境风险评估方法——定性评估为主的风险矩阵法,制定了风险重要性等级二维矩阵表和风险重要性等级划分标准,并就中国石油石化行业在CCUS技术领域的未来发展提出了几点建议。展开更多
The carbonation characteristics of K2CO3/Al2O3 supported sorbent for CO2 capture was investigated with thermogravimetric apparatus(TGA),X-ray diffraction(XRD),scanning electron microscopy analysis(SEM)and N2 adsorptio...The carbonation characteristics of K2CO3/Al2O3 supported sorbent for CO2 capture was investigated with thermogravimetric apparatus(TGA),X-ray diffraction(XRD),scanning electron microscopy analysis(SEM)and N2 adsorption.The results showed that the carbonation rate of K2CO3 before being loaded on Al2O3 was slow.However,the K2CO3/Al2O3supported sorbent showed excellent carbonation performance.The difference in carbonation behavior between K2CO3and K2CO3/Al2O3supported sorbent was analyzed from the microscopic view.The analytical reagent K2CO3 sample was of monoclinic crystal structure and could react quickly with H2O in the experimental carbonation environment to produce K2CO3·1.5H2O,which was unfavorable to carbonation reaction.When K2CO3was loaded on Al2O3,the surface area and porosity of the sorbent was improved greatly.So the carbonation properties of the K2CO3/Al2O3 supported sorbent was also improved.展开更多
文摘随着全球工业化进程的加快,二氧化碳的大量排放导致气候变暖。如何有效解决碳排放问题已成为全球的研究热点,二氧化碳捕集封存(Carbon Capture Utilization and Storage,CCUS)技术的应用可有效改善碳排放问题。目前,全球许多国家和地区已建有不同规模的CCUS项目,对CCUS技术和项目进行了系统总结。分析结果表明,CCUS项目在解决碳排放问题上有着较好的工业前景。
文摘为了应对全球气候变暖这一国际性难题,CO_2捕集、利用和封存(Carbon Capture,Utilization and Storage,CCUS)技术应运而生,而石油石化行业作为高碳化行业,将面临更大的挑战。调研了全球石油石化行业在CCUS技术领域研究取得的最新进展,列举了我国开展的一系列相关技术研发和示范项目,进一步阐述了该行业所取得的技术成果。提出了一套针对石油石化行业CCUS的技术方案,利用燃气锅炉产生的烟气与天然气进行三重整反应,将产生的合成气用于回注或者合成二甲醚(DME,分离出的CO_2用于驱油),并对这两种利用方式进行了经济性比较。在此基础上,提出了一种环境风险评估方法——定性评估为主的风险矩阵法,制定了风险重要性等级二维矩阵表和风险重要性等级划分标准,并就中国石油石化行业在CCUS技术领域的未来发展提出了几点建议。
文摘The carbonation characteristics of K2CO3/Al2O3 supported sorbent for CO2 capture was investigated with thermogravimetric apparatus(TGA),X-ray diffraction(XRD),scanning electron microscopy analysis(SEM)and N2 adsorption.The results showed that the carbonation rate of K2CO3 before being loaded on Al2O3 was slow.However,the K2CO3/Al2O3supported sorbent showed excellent carbonation performance.The difference in carbonation behavior between K2CO3and K2CO3/Al2O3supported sorbent was analyzed from the microscopic view.The analytical reagent K2CO3 sample was of monoclinic crystal structure and could react quickly with H2O in the experimental carbonation environment to produce K2CO3·1.5H2O,which was unfavorable to carbonation reaction.When K2CO3was loaded on Al2O3,the surface area and porosity of the sorbent was improved greatly.So the carbonation properties of the K2CO3/Al2O3 supported sorbent was also improved.
