Huicong Zuo , Jinlong Mao , Zhen Duan , Anle Qian , Ying Shi , Zhenhua Gu , Danyang Li , Yonggang Wei , Hua Wang , Kongzhai Li
{"title":"用化学循环的概念从高炉煤气中分离和净化CO2","authors":"Huicong Zuo , Jinlong Mao , Zhen Duan , Anle Qian , Ying Shi , Zhenhua Gu , Danyang Li , Yonggang Wei , Hua Wang , Kongzhai Li","doi":"10.1016/j.seppur.2025.133084","DOIUrl":null,"url":null,"abstract":"<div><div>Low-cost technology for CO<sub>2</sub> separation and purification from steel industry has also attracted much attention. Here, we propose using red mud (RM) as an oxygen carrier (OC) for blast furnace gas (BFG) chemical looping combustion (CLC), resulting in low-cost CO<sub>2</sub> capture from BFG conversion. The results showed that Guangxi (GX) RM attained<!--> <!-->CO<sub>2</sub> capture and conversion rates of 97.6 % and 99.5 % on average, respectively. The overall performance of the GX-RM is enhanced by<!--> <!-->various<!--> <!-->interactions of the active components<!--> <!-->(Fe<sub>2</sub>O<sub>3</sub>) and the appropriate content of the inert/alkaline components (Al<sub>2</sub>O<sub>3</sub>, Na<sub>2</sub>O, CaO, and MgO). An additional factor in the high performance of the OC is the synergistic effects between Fe and Ti oxides (Fe<sub>2</sub>TiO<sub>5</sub>). According to TPD, XPS, and in-situ DRIFTS data, the primary processes leading to the CO<sub>2</sub> production were the direct reaction between lattice oxygen and CO,<!--> <!-->and the reaction of CO with active oxygen species through CO adsorption on the surface of OC. Kinetic analysis using a thermogravimetric method suggests that the phase-boundary-controlled (contracting cylinder) model could be a viable fit for the CO-GX-RM reaction, with an activation energy of 29.18 kJ/mol. Further research into the phases and compositions of GX-RM showed that the CLC treatment increased the dispersion of elements while destroying the dense structure of RM. This work has established an effective strategy for CO<sub>2</sub> capture from industrial byproduct gas and a sustainable waste treatment option through the use of RM as OC to capture CO<sub>2</sub> in BFG.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"370 ","pages":"Article 133084"},"PeriodicalIF":9.0000,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Separation and purification of CO2 from blast furnace gas combustion by a chemical looping concept\",\"authors\":\"Huicong Zuo , Jinlong Mao , Zhen Duan , Anle Qian , Ying Shi , Zhenhua Gu , Danyang Li , Yonggang Wei , Hua Wang , Kongzhai Li\",\"doi\":\"10.1016/j.seppur.2025.133084\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Low-cost technology for CO<sub>2</sub> separation and purification from steel industry has also attracted much attention. Here, we propose using red mud (RM) as an oxygen carrier (OC) for blast furnace gas (BFG) chemical looping combustion (CLC), resulting in low-cost CO<sub>2</sub> capture from BFG conversion. The results showed that Guangxi (GX) RM attained<!--> <!-->CO<sub>2</sub> capture and conversion rates of 97.6 % and 99.5 % on average, respectively. The overall performance of the GX-RM is enhanced by<!--> <!-->various<!--> <!-->interactions of the active components<!--> <!-->(Fe<sub>2</sub>O<sub>3</sub>) and the appropriate content of the inert/alkaline components (Al<sub>2</sub>O<sub>3</sub>, Na<sub>2</sub>O, CaO, and MgO). An additional factor in the high performance of the OC is the synergistic effects between Fe and Ti oxides (Fe<sub>2</sub>TiO<sub>5</sub>). According to TPD, XPS, and in-situ DRIFTS data, the primary processes leading to the CO<sub>2</sub> production were the direct reaction between lattice oxygen and CO,<!--> <!-->and the reaction of CO with active oxygen species through CO adsorption on the surface of OC. Kinetic analysis using a thermogravimetric method suggests that the phase-boundary-controlled (contracting cylinder) model could be a viable fit for the CO-GX-RM reaction, with an activation energy of 29.18 kJ/mol. Further research into the phases and compositions of GX-RM showed that the CLC treatment increased the dispersion of elements while destroying the dense structure of RM. This work has established an effective strategy for CO<sub>2</sub> capture from industrial byproduct gas and a sustainable waste treatment option through the use of RM as OC to capture CO<sub>2</sub> in BFG.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":\"370 \",\"pages\":\"Article 133084\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2025-04-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586625016818\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625016818","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Separation and purification of CO2 from blast furnace gas combustion by a chemical looping concept
Low-cost technology for CO2 separation and purification from steel industry has also attracted much attention. Here, we propose using red mud (RM) as an oxygen carrier (OC) for blast furnace gas (BFG) chemical looping combustion (CLC), resulting in low-cost CO2 capture from BFG conversion. The results showed that Guangxi (GX) RM attained CO2 capture and conversion rates of 97.6 % and 99.5 % on average, respectively. The overall performance of the GX-RM is enhanced by various interactions of the active components (Fe2O3) and the appropriate content of the inert/alkaline components (Al2O3, Na2O, CaO, and MgO). An additional factor in the high performance of the OC is the synergistic effects between Fe and Ti oxides (Fe2TiO5). According to TPD, XPS, and in-situ DRIFTS data, the primary processes leading to the CO2 production were the direct reaction between lattice oxygen and CO, and the reaction of CO with active oxygen species through CO adsorption on the surface of OC. Kinetic analysis using a thermogravimetric method suggests that the phase-boundary-controlled (contracting cylinder) model could be a viable fit for the CO-GX-RM reaction, with an activation energy of 29.18 kJ/mol. Further research into the phases and compositions of GX-RM showed that the CLC treatment increased the dispersion of elements while destroying the dense structure of RM. This work has established an effective strategy for CO2 capture from industrial byproduct gas and a sustainable waste treatment option through the use of RM as OC to capture CO2 in BFG.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.