This paper presents the simulation of a new fluidized-bed coal gasifier with separated combustion and gasification chambers and inert solid heat-carrier.The simulation shows that two phase model proposed by Kunii and ...This paper presents the simulation of a new fluidized-bed coal gasifier with separated combustion and gasification chambers and inert solid heat-carrier.The simulation shows that two phase model proposed by Kunii and Levenspiel with a well mixed emulsion phase is suitable to describe he gasification for a laboratory fluidized-bed.展开更多
The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All t...The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All these compounds were identified through 1H NMR, MS, IR, UV and Element analysis. The correlation between the structure of compounds and their 1H NMR, MS, IR, UV spectra was discussed and their specific spectra were explained. We found nine metalloporphyrins exhibited liquid crystal behaviour through DSC and polarized-light microscope. They had one to three mesophases and certain phase transition temperature, ?H and temperature range of L.C(?T).展开更多
文摘This paper presents the simulation of a new fluidized-bed coal gasifier with separated combustion and gasification chambers and inert solid heat-carrier.The simulation shows that two phase model proposed by Kunii and Levenspiel with a well mixed emulsion phase is suitable to describe he gasification for a laboratory fluidized-bed.
文摘The method of Adler was improved to prepare a series of 5,10,15,20-tetrakis(4-alkoxyphenyl)porphyrins and their complexes containing Fe3+, Mn3+, Pb2+, Co2+, Cu2+, Zn2+. Among them there were seven new compounds. All these compounds were identified through 1H NMR, MS, IR, UV and Element analysis. The correlation between the structure of compounds and their 1H NMR, MS, IR, UV spectra was discussed and their specific spectra were explained. We found nine metalloporphyrins exhibited liquid crystal behaviour through DSC and polarized-light microscope. They had one to three mesophases and certain phase transition temperature, ?H and temperature range of L.C(?T).