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Pregled bibliografske jedinice broj: 934694

A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion


Deng, Shuanghui; Wang, Xuebin; Zhang, Jiaye; Liu, Zihan; Mikulčić, Hrvoje; Vujanović, Milan; Tan, Houzhang; Duić, Neven
A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion // Journal of environmental management, 218 (2018), 50-58 doi:10.1016/j.jenvman.2018.04.057 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 934694 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion

Autori
Deng, Shuanghui ; Wang, Xuebin ; Zhang, Jiaye ; Liu, Zihan ; Mikulčić, Hrvoje ; Vujanović, Milan ; Tan, Houzhang ; Duić, Neven

Izvornik
Journal of environmental management (0301-4797) 218 (2018); 50-58

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Biomass ; Oxy-fuel combustion ; Catalysis ; Potassium ; Thermogravimetric analysis

Sažetak
Biomass combustion under the oxy-fuel conditions (Oxy-biomass combustion) is one of the approaches achieving negative CO2 emissions. KCl, K2CO3 and K2SO4, as the major potassium species in biomass ash, can catalytically affect biomass combustion. In this paper, the catalysis of the representative potassium salts on oxy-biomass combustion was studied using a thermogravimetric analyzer (TGA). Effects of potassium salt types (KCl, K2CO3 and K2SO4), loading concentrations (0, 1, 3, 5, 8 wt%), replacing N2 by CO2, and O2 concentrations (5, 20, 30 vol%) on the catalysis degree were discussed. The comparison between TG- DTG curves of biomass combustion before and after water washing in both the 20%O2/80%N2 and 20%O2/80%CO2 atmospheres indicates that the water-soluble minerals in biomass play a role in promoting the devolatilization and accelerating the char-oxidation ; and the replacement of N2 by CO2 inhibits the devolatilization and char- oxidation processes during oxy-biomass combustion. In the devolatilization stage, the catalysis degree of potassium monotonously increases with the increase of potassium salt loaded concentration. The catalysis degree order of the studied potassium salts is K2CO3 > KCl > K2SO4. In the char-oxidation stage, with the increase of loading concentration the three kinds of potassium salts present inconsistent change tendencies of the catalysis degree. In the studied loading concentrations from 0 to 8 wt%, there is an optimal loading concentration for KCl and K2CO3, at 3 and 5 wt%, respectively ; while for K2SO4, the catalysis degree on char-oxidation monotonically increases with the loading potassium concentration. For most studied conditions, regardless of the potassium salt types or the loading concentrations or the combustion stages, the catalysis degree in the O2/CO2 atmosphere is stronger than that in the O2/N2 atmosphere. The catalysis degree is also affected by the O2 concentrations, and the lowest catalysis degree is generally around 20 vol% O2 concentration. The kinetic parameters under the different studied conditions are finally obtained.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekti:
120-1201918-1920 - Racionalno skladištenje energije za održivi razvoj energetike (Duić, Neven, MZOS ) ( POIROT)

Ustanove:
Fakultet strojarstva i brodogradnje, Zagreb

Profili:

Avatar Url Milan Vujanović (autor)

Avatar Url Neven Duić (autor)

Avatar Url Hrvoje Mikulčić (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com

Citiraj ovu publikaciju:

Deng, Shuanghui; Wang, Xuebin; Zhang, Jiaye; Liu, Zihan; Mikulčić, Hrvoje; Vujanović, Milan; Tan, Houzhang; Duić, Neven
A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion // Journal of environmental management, 218 (2018), 50-58 doi:10.1016/j.jenvman.2018.04.057 (međunarodna recenzija, članak, znanstveni)
Deng, S., Wang, X., Zhang, J., Liu, Z., Mikulčić, H., Vujanović, M., Tan, H. & Duić, N. (2018) A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion. Journal of environmental management, 218, 50-58 doi:10.1016/j.jenvman.2018.04.057.
@article{article, year = {2018}, pages = {50-58}, DOI = {10.1016/j.jenvman.2018.04.057}, keywords = {Biomass, Oxy-fuel combustion, Catalysis, Potassium, Thermogravimetric analysis}, journal = {Journal of environmental management}, doi = {10.1016/j.jenvman.2018.04.057}, volume = {218}, issn = {0301-4797}, title = {A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion}, keyword = {Biomass, Oxy-fuel combustion, Catalysis, Potassium, Thermogravimetric analysis} }
@article{article, year = {2018}, pages = {50-58}, DOI = {10.1016/j.jenvman.2018.04.057}, keywords = {Biomass, Oxy-fuel combustion, Catalysis, Potassium, Thermogravimetric analysis}, journal = {Journal of environmental management}, doi = {10.1016/j.jenvman.2018.04.057}, volume = {218}, issn = {0301-4797}, title = {A kinetic study on the catalysis of KCl, K2SO4, and K2CO3 during oxy-biomass combustion}, keyword = {Biomass, Oxy-fuel combustion, Catalysis, Potassium, Thermogravimetric analysis} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati:





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