Cyclic CO2 capture behavior of limestone modified with pyroligneous acid (PA) during calcium looping cycles / Yingjie Li in Industrial & engineering chemistry research, Vol. 50 N° 17 (Septembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 10222-10228 Titre : Cyclic CO2 capture behavior of limestone modified with pyroligneous acid (PA) during calcium looping cycles Type de document : texte imprimé Auteurs : Yingjie Li, Auteur ; Rongyue Sun, Auteur ; Hongling Liu, Auteur Année de publication : 2011 Article en page(s) : pp. 10222-10228 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon dioxide Résumé : In this work, pyroligneous acid (PA) was used to modify limestone, and the CO2 capture capacity in calcination/ carbonation cycles was consequently strengthened. The cyclic CO2 capture behavior of PA-modified limestone was investigated in a thermogravimetric analyzer and a dual fixed-bed reactor. The main component of the PA-modified limestone was found to be calcium acetate hydrate. The optimum ratio of PA to limestone was found to be 20 mL/g. The PA-modified limestone was found to retain a higher CO2 capture capacity for carbonation at 700 °C. The carbonation conversion ofthe PA-modified limestone achieved 0.33 after 103 cycles, whereas, for the original sorbent, the conversion was just 0.078 under the same reaction conditions. The modification of limestone increased the surface area and pore volume of the calcined material during cycles. Furthermore, the calcined form of the modified limestone had more pores in the ranges of 1.8-4.6 and 18-155 nm, and as a result, its surface area and pore volume were both expanded. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24483666 [article] Cyclic CO2 capture behavior of limestone modified with pyroligneous acid (PA) during calcium looping cycles [texte imprimé] / Yingjie Li, Auteur ; Rongyue Sun, Auteur ; Hongling Liu, Auteur . - 2011 . - pp. 10222-10228. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 10222-10228 Mots-clés : Carbon dioxide Résumé : In this work, pyroligneous acid (PA) was used to modify limestone, and the CO2 capture capacity in calcination/ carbonation cycles was consequently strengthened. The cyclic CO2 capture behavior of PA-modified limestone was investigated in a thermogravimetric analyzer and a dual fixed-bed reactor. The main component of the PA-modified limestone was found to be calcium acetate hydrate. The optimum ratio of PA to limestone was found to be 20 mL/g. The PA-modified limestone was found to retain a higher CO2 capture capacity for carbonation at 700 °C. The carbonation conversion ofthe PA-modified limestone achieved 0.33 after 103 cycles, whereas, for the original sorbent, the conversion was just 0.078 under the same reaction conditions. The modification of limestone increased the surface area and pore volume of the calcined material during cycles. Furthermore, the calcined form of the modified limestone had more pores in the ranges of 1.8-4.6 and 18-155 nm, and as a result, its surface area and pore volume were both expanded. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24483666

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Sequential SO2/CO2 capture of calcium-based solid waste from the paper industry in the calcium looping process / Yingjie Li in Industrial & engineering chemistry research, Vol. 51 N° 49 (Décembre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 16042-16048 Titre : Sequential SO2/CO2 capture of calcium-based solid waste from the paper industry in the calcium looping process Type de document : texte imprimé Auteurs : Yingjie Li, Auteur ; Changtian Liu, Auteur ; Rongyue Sun, Auteur Année de publication : 2013 Article en page(s) : pp. 16042-16048 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Paper industry Solid waste Carbon dioxide Résumé : In this work, the sequential SO2 and CO2 capture behavior of lime mud (LM) as a solid waste from the paper industry was investigated in the calcium looping process. In order to minimize the unfavorable effects of impurities such as Na and Cl on CO2 and SO2 capture of LM, the LM was prewashed with distilled water. The prewash treatment improves the cyclic CO2 capture capacity of the LM during multiple carbonation/calcination cycles. The ultimate carbonation conversion of the treated LM is 1.8 and 4.8 times greater than those of the raw LM and the limestone, respectively. The microstructure analysis shows that the surface area and pore volume of the LM are significantly increased after the prewash treatment. With increasing the sulfation temperature from 850 to 950 °C, both the raw LM and the treated one show an increase in the sulfation conversion after the same number of cycles. Interestingly, the effect of the sulfation temperature decreases with increasing the number of cycles. For the raw LM or the treated LM, the sulfation conversion after 50 cycles is higher than that after 15 or 100 cycles. That is related to the change in pore size of the raw LM and the treated LM after multiple cycles. Compared with the raw LM and the limestone, the sulfation conversion of the treated LM is greater after the same number of cycles and at the same reaction time. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732129 [article] Sequential SO2/CO2 capture of calcium-based solid waste from the paper industry in the calcium looping process [texte imprimé] / Yingjie Li, Auteur ; Changtian Liu, Auteur ; Rongyue Sun, Auteur . - 2013 . - pp. 16042-16048. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 16042-16048 Mots-clés : Paper industry Solid waste Carbon dioxide Résumé : In this work, the sequential SO2 and CO2 capture behavior of lime mud (LM) as a solid waste from the paper industry was investigated in the calcium looping process. In order to minimize the unfavorable effects of impurities such as Na and Cl on CO2 and SO2 capture of LM, the LM was prewashed with distilled water. The prewash treatment improves the cyclic CO2 capture capacity of the LM during multiple carbonation/calcination cycles. The ultimate carbonation conversion of the treated LM is 1.8 and 4.8 times greater than those of the raw LM and the limestone, respectively. The microstructure analysis shows that the surface area and pore volume of the LM are significantly increased after the prewash treatment. With increasing the sulfation temperature from 850 to 950 °C, both the raw LM and the treated one show an increase in the sulfation conversion after the same number of cycles. Interestingly, the effect of the sulfation temperature decreases with increasing the number of cycles. For the raw LM or the treated LM, the sulfation conversion after 50 cycles is higher than that after 15 or 100 cycles. That is related to the change in pore size of the raw LM and the treated LM after multiple cycles. Compared with the raw LM and the limestone, the sulfation conversion of the treated LM is greater after the same number of cycles and at the same reaction time. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732129

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