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01148 Synthesis gas production from natural gas in a fixed-bed reactor with reversed flow
03
the nozzles, and a means for detecting the pressure drop between the burner and the spouted-hed reactor. The burner is simple in construction and increases gasification efficiency.
97lOl141
Spouted-bed
coal gasifier
Kate. S. and Fukuda. H. Jpn. Kokai Tokkyo Koho JP 08, 199, 176 [96, 199, 1761 (Cl. ClOJ3/54), 6 Aug 1996, Appl. 9517. 191, 20 Jan 19YS, 4 pp (In Japanese). Details an apparatus which comprises a spouted-bed gasifier with a combustor zone, a reductor zone to pass high-temperature combustible gas to a heat exchanger. a means for blowing pulverized coal with air into the burner in the reductor zone, a char burner in the lower part of the comhustor zone, a means for utilizing the high-temperature combustible gas as a heat source. and a means for generating high-temperature air for the comhustor zone.
Structure/activity relationships in coprecipitated 97101142 nickel-alumina catalysts using CO2 adsorption and methanation Aksoylu, A. E. et al. Appl. Cutal.. A. 1996, 145, (l-2), 185-193. The study detailed in this paper involved the examination of a series of coprecipitated Ni/AlrOl catalysts containing O-2.5 wt.% Ni for total surface area. total pore volume, metal surface area, COz adsorption and CO2 methanation activity in order to study the relation between metal content. structure and catalyst activity. These catalysts are efficient promoters for methanation. Methanation activity is dependent on the nickel content and the degree of CO2 adsorption at the reaction considered. Although AlzOl does not exhibit methanation activity, it is active for CO2 adsorption.
97101143 reference
Study of partial oxidation to the production of synthesis
of hydrocarbons gas
Basevich, V. Ya. et ul. Theor. Found. Chem. Eng. (Transl. of Tear. Khim. Tekhml.), 1096, 30. (5) 456-460. Presents a kinetic model calculation of a generator of synthesis-gas the oxidation of methane, ethane, and ethylene. Results show that the parameter determining the yield of hydrogen and carbon monoxide composition of the mixture The yield of these products increases increasing temperature.
97101144 blue gas
Study on briquette
gasification
with Osn. using main is the with
to low CO content
Wang. Y. L’I cl/. Hnrrdort,e Lieoong Duxue Xtrchao. 1996. 22. (5). 524-529. (In Chinese) The gasification test for producing blue gas was conducted in a small. single tube reactor, with hriquettetes made from a mixture of fine coal and shift agents. The composition and yield of the product gas depended on the type and quantity of the shift agent. temperature and time of gasification; steam flow rate, etc. These results have heen verified in an industrial gasification test in a two stage hlue gas gasifier.
97101145 Study on flash hydropyrolysis (I). Effect of atmospheres
of bituminous
coal.
Zhu, Z. ef ul. Runliao Huaxue Xuehao, 1996. 24, (5), 411-415. (In Chinese) Presents the results of a study into the flash pyrolysis of Dongsheng httuminous coal in a small entrained reactor in Hz and Nz atmospheres.
97101146 Study coal gasifier
on in-bed
desulfurization
in a fluidized
97101147 A study on the impacts of changes in coal quality on the performances of the gasification processes and IGCC Ann. D-H. ef al. Proc. Annu. In?. Pittsburgh Coal Conf., 1995, 12, 187-192. This article presents an investigation into the impacts of changes in coal quality on the performances of gasification processes and integrated gasification-combined cycle (IGCC) plants. Twenty-two imported coals were evaluated. Among the imported coals to Korea, bituminous coal was superior to subbituminous coal for IGCC power generation, partly because of solids concentration limitations in a slurry feeding system and energy requirements for drying for a dry feeding system for the subbituminous CdS.
Synthesis gas production reactor with reversed flow
from
natural
97101149 Technical and economic integrated schemes for gasification operating petroleum refinery
results from various of heavy residues in
Thiery, G. and Galeazzi, R. Pet. Tech.. 1996. 402, 37-38. 40-47. (In French) Processing of the residues obtained during visbreaking, deasphalting, coking, and hydrotreatment was considered. The processing schemes included partial oxidation, S recovery, H production and generation of electrical power.
97lO1150 production
Thermal plasma of syngas
pyrolysis
of
used
old
tires
for
Chang, J. S. et al. J Environ. Sci. Health. Part A; Envirotr. %i. Eng. Toxic Hazard. S&at. Control, 1996, A.31, (7), 1781-1799. Thermal plasma pyrolysis of used tyres for the production of syngas was investigated experimentally. A series of experiments have shown that tyre waste can be pyrolysed in a plasma reactor to produce combustible gas, such as CzHz, CH+ CzH4, Hz, CO. Increasing the tyre injection quantity increases the concentration of hydrocarbons, increases the combustion heat of the pyrolysis product. and decreases the concentration of metal oxide. With steam injection, it produced a large quantity of hydrogen and carbon monoxide with lower concentrations of CzH2. The combustion heat is slightly lower with steam injecetion than that without it. Neither polychlorinated biphenyls nor p-aminohippuric acid were detected in the ashes.
97101151 Thermodynamic simulations of lignite-fired with in situ desulfurization and COP capture
IGCC
Elseviers, W. F. et al. Fuel. 1996. 75. (12). 1449-1456. This study involved the simulation of integrated gasification combined cycles (IGCC) running on Greek lignite with in rtfn desulfurization and COz capture with the ASPEN PLUS process simulator and its comparison with other power cycles.
97101152 carbons
Two stage direct coal gasification
to C2-C4 hydro-
Annapragada, R. V. rr al. Fltel Sci. Technol Inr., 1996, 14. (4). 1161-l 194. Presents the results of a study conducted to convert coal to Cz-CI hydrocarbons in a two-stage reactor system. Coal was converted to liquids at 44O’C in a stirred hatch autoclave using Tetralin as the hydrogen donor solvent. The liquids produced were separated from the unreacted coal and ash by filtration. The liquids were then fed into a second stage fixed bed reactor containing sulfided Ni-Mo/AlzOi and Si02-A1207 catalyst. The liquids were hydrocracked on the dual-functional catalyst giving high yields of Cz-C, hydrocarbons at 1800 psig and 425-500 ‘C. Reaction mechanisms of conversion of coal derived liquids to Cz-C4 hydrocarbons are presented. The kinetic parameters of the conversion of coal liquids to gases were determined. The activation energy was calculated to he 23.9 Kcalimol.
97101153 Two years’ successful operation of a hot gas filter in the Rheinbraun high temperature Winkler coal gasification demonstration plant Wischnewski, R. and Engelhard, J. Proc. Annu. fnt. Pittsburgh Coal Conf,, 1995. 12, 52-57. The design of the filter for hot coal gas is descrtbed, and a review after two years successful operation is presented.
bed
Bu, X. ct al. Huarrjing Kexur, 1996. 17, (2), 39-41. (In Chinese) This study made use of coal from four sources by using limestone and dolomite as desulfurizer. The results showed that both limestone and dolomite can he used for removing sulfur during the gasification of highsulfur coal. The desulfurization efficiency increased with increasing Ca-S molar ratio and reached a maximum at Ca-S 3:l. The effect of operating pressure on desulfurization efficiency depends on the temperature and partial pressure of CO>. A desulfurization rate of 50%-85% was ohtained.
97101146 fixed-bed
Gaseous fuels (derived gaseous fuels)
gas in a
De Groote, A. M. and Froment, G. F. Can. J Chem. Eng., 1996. 74, (S), 735-742. Presents the results of an investigation into the feasihility of producing synthesis gas by partial oxidation of natural gas on a Ni-catalyst in a fixed bed reactor with reversed flow. The results were obtained by means of simulation.
97lO1154
Use of methane
gas at Vorkuta
mines
Veselov, A. P. et al. Bezop. Tr. Prom -sfi. 1996. (8), 37-38. (In Russian) Presents a discussion of the uses of methane recovered from coal mines as fuel and feedstock for the chemical industry (through manufacturing of synthesis gases). The average content of methane in the recovered aircontaining gas is 35%; maximum level of methane recovery from Vorkuta mines reached 553.6 m7/min (55.5 msimin just from one mine). The possibility of increasing the degassing efficiency (which is currently 5 I %) was also discussed.
97101155 oven gas
Use of screw compressors
in processing
of coke-
Kovalev, E. T. and Ivashchenko, V. A. Koks Khim., 1995, (S), 3.5-37. (In Russian) Discusses how the purification of coke-oven gas and its conversion to synthesis gas required the use of screw compressors.
97101156 Volatilization and catalytic metal during coal char gasification
effectiveness
of alkali
Takarada, T. et al. Sekitan Kagaku Kaigi Happy Ronhunshu. 1995, 32. 236-239 (In Japanese). Four kinds of alkali compounds and kaolinite were added to acid-treated Yallourn coal. The alkali-loaded coal was pyrolysed in N and gasified in a CO> atmosphere. The effects of temperature, gasifying atmosphere, mineral matter and carbon conversion on volatilization of alkalis and gasification rate were examined. The catalytic effectiveness of alkali metal on the gasification rate was affected by the addition of kaolinite and coal particle size. The char gasification rate was much enhanced by the addition of NazSiOl.
Fuel and Energy Abstracts
March 1997
93
the nozzles, and a means for detecting the pressure drop between the burner and the spouted-hed reactor. The burner is simple in construction and increases gasification efficiency.
97lOl141
Spouted-bed
coal gasifier
Kate. S. and Fukuda. H. Jpn. Kokai Tokkyo Koho JP 08, 199, 176 [96, 199, 1761 (Cl. ClOJ3/54), 6 Aug 1996, Appl. 9517. 191, 20 Jan 19YS, 4 pp (In Japanese). Details an apparatus which comprises a spouted-bed gasifier with a combustor zone, a reductor zone to pass high-temperature combustible gas to a heat exchanger. a means for blowing pulverized coal with air into the burner in the reductor zone, a char burner in the lower part of the comhustor zone, a means for utilizing the high-temperature combustible gas as a heat source. and a means for generating high-temperature air for the comhustor zone.
Structure/activity relationships in coprecipitated 97101142 nickel-alumina catalysts using CO2 adsorption and methanation Aksoylu, A. E. et al. Appl. Cutal.. A. 1996, 145, (l-2), 185-193. The study detailed in this paper involved the examination of a series of coprecipitated Ni/AlrOl catalysts containing O-2.5 wt.% Ni for total surface area. total pore volume, metal surface area, COz adsorption and CO2 methanation activity in order to study the relation between metal content. structure and catalyst activity. These catalysts are efficient promoters for methanation. Methanation activity is dependent on the nickel content and the degree of CO2 adsorption at the reaction considered. Although AlzOl does not exhibit methanation activity, it is active for CO2 adsorption.
97101143 reference
Study of partial oxidation to the production of synthesis
of hydrocarbons gas
Basevich, V. Ya. et ul. Theor. Found. Chem. Eng. (Transl. of Tear. Khim. Tekhml.), 1096, 30. (5) 456-460. Presents a kinetic model calculation of a generator of synthesis-gas the oxidation of methane, ethane, and ethylene. Results show that the parameter determining the yield of hydrogen and carbon monoxide composition of the mixture The yield of these products increases increasing temperature.
97101144 blue gas
Study on briquette
gasification
with Osn. using main is the with
to low CO content
Wang. Y. L’I cl/. Hnrrdort,e Lieoong Duxue Xtrchao. 1996. 22. (5). 524-529. (In Chinese) The gasification test for producing blue gas was conducted in a small. single tube reactor, with hriquettetes made from a mixture of fine coal and shift agents. The composition and yield of the product gas depended on the type and quantity of the shift agent. temperature and time of gasification; steam flow rate, etc. These results have heen verified in an industrial gasification test in a two stage hlue gas gasifier.
97101145 Study on flash hydropyrolysis (I). Effect of atmospheres
of bituminous
coal.
Zhu, Z. ef ul. Runliao Huaxue Xuehao, 1996. 24, (5), 411-415. (In Chinese) Presents the results of a study into the flash pyrolysis of Dongsheng httuminous coal in a small entrained reactor in Hz and Nz atmospheres.
97101146 Study coal gasifier
on in-bed
desulfurization
in a fluidized
97101147 A study on the impacts of changes in coal quality on the performances of the gasification processes and IGCC Ann. D-H. ef al. Proc. Annu. In?. Pittsburgh Coal Conf., 1995, 12, 187-192. This article presents an investigation into the impacts of changes in coal quality on the performances of gasification processes and integrated gasification-combined cycle (IGCC) plants. Twenty-two imported coals were evaluated. Among the imported coals to Korea, bituminous coal was superior to subbituminous coal for IGCC power generation, partly because of solids concentration limitations in a slurry feeding system and energy requirements for drying for a dry feeding system for the subbituminous CdS.
Synthesis gas production reactor with reversed flow
from
natural
97101149 Technical and economic integrated schemes for gasification operating petroleum refinery
results from various of heavy residues in
Thiery, G. and Galeazzi, R. Pet. Tech.. 1996. 402, 37-38. 40-47. (In French) Processing of the residues obtained during visbreaking, deasphalting, coking, and hydrotreatment was considered. The processing schemes included partial oxidation, S recovery, H production and generation of electrical power.
97lO1150 production
Thermal plasma of syngas
pyrolysis
of
used
old
tires
for
Chang, J. S. et al. J Environ. Sci. Health. Part A; Envirotr. %i. Eng. Toxic Hazard. S&at. Control, 1996, A.31, (7), 1781-1799. Thermal plasma pyrolysis of used tyres for the production of syngas was investigated experimentally. A series of experiments have shown that tyre waste can be pyrolysed in a plasma reactor to produce combustible gas, such as CzHz, CH+ CzH4, Hz, CO. Increasing the tyre injection quantity increases the concentration of hydrocarbons, increases the combustion heat of the pyrolysis product. and decreases the concentration of metal oxide. With steam injection, it produced a large quantity of hydrogen and carbon monoxide with lower concentrations of CzH2. The combustion heat is slightly lower with steam injecetion than that without it. Neither polychlorinated biphenyls nor p-aminohippuric acid were detected in the ashes.
97101151 Thermodynamic simulations of lignite-fired with in situ desulfurization and COP capture
IGCC
Elseviers, W. F. et al. Fuel. 1996. 75. (12). 1449-1456. This study involved the simulation of integrated gasification combined cycles (IGCC) running on Greek lignite with in rtfn desulfurization and COz capture with the ASPEN PLUS process simulator and its comparison with other power cycles.
97101152 carbons
Two stage direct coal gasification
to C2-C4 hydro-
Annapragada, R. V. rr al. Fltel Sci. Technol Inr., 1996, 14. (4). 1161-l 194. Presents the results of a study conducted to convert coal to Cz-CI hydrocarbons in a two-stage reactor system. Coal was converted to liquids at 44O’C in a stirred hatch autoclave using Tetralin as the hydrogen donor solvent. The liquids produced were separated from the unreacted coal and ash by filtration. The liquids were then fed into a second stage fixed bed reactor containing sulfided Ni-Mo/AlzOi and Si02-A1207 catalyst. The liquids were hydrocracked on the dual-functional catalyst giving high yields of Cz-C, hydrocarbons at 1800 psig and 425-500 ‘C. Reaction mechanisms of conversion of coal derived liquids to Cz-C4 hydrocarbons are presented. The kinetic parameters of the conversion of coal liquids to gases were determined. The activation energy was calculated to he 23.9 Kcalimol.
97101153 Two years’ successful operation of a hot gas filter in the Rheinbraun high temperature Winkler coal gasification demonstration plant Wischnewski, R. and Engelhard, J. Proc. Annu. fnt. Pittsburgh Coal Conf,, 1995. 12, 52-57. The design of the filter for hot coal gas is descrtbed, and a review after two years successful operation is presented.
bed
Bu, X. ct al. Huarrjing Kexur, 1996. 17, (2), 39-41. (In Chinese) This study made use of coal from four sources by using limestone and dolomite as desulfurizer. The results showed that both limestone and dolomite can he used for removing sulfur during the gasification of highsulfur coal. The desulfurization efficiency increased with increasing Ca-S molar ratio and reached a maximum at Ca-S 3:l. The effect of operating pressure on desulfurization efficiency depends on the temperature and partial pressure of CO>. A desulfurization rate of 50%-85% was ohtained.
97101146 fixed-bed
Gaseous fuels (derived gaseous fuels)
gas in a
De Groote, A. M. and Froment, G. F. Can. J Chem. Eng., 1996. 74, (S), 735-742. Presents the results of an investigation into the feasihility of producing synthesis gas by partial oxidation of natural gas on a Ni-catalyst in a fixed bed reactor with reversed flow. The results were obtained by means of simulation.
97lO1154
Use of methane
gas at Vorkuta
mines
Veselov, A. P. et al. Bezop. Tr. Prom -sfi. 1996. (8), 37-38. (In Russian) Presents a discussion of the uses of methane recovered from coal mines as fuel and feedstock for the chemical industry (through manufacturing of synthesis gases). The average content of methane in the recovered aircontaining gas is 35%; maximum level of methane recovery from Vorkuta mines reached 553.6 m7/min (55.5 msimin just from one mine). The possibility of increasing the degassing efficiency (which is currently 5 I %) was also discussed.
97101155 oven gas
Use of screw compressors
in processing
of coke-
Kovalev, E. T. and Ivashchenko, V. A. Koks Khim., 1995, (S), 3.5-37. (In Russian) Discusses how the purification of coke-oven gas and its conversion to synthesis gas required the use of screw compressors.
97101156 Volatilization and catalytic metal during coal char gasification
effectiveness
of alkali
Takarada, T. et al. Sekitan Kagaku Kaigi Happy Ronhunshu. 1995, 32. 236-239 (In Japanese). Four kinds of alkali compounds and kaolinite were added to acid-treated Yallourn coal. The alkali-loaded coal was pyrolysed in N and gasified in a CO> atmosphere. The effects of temperature, gasifying atmosphere, mineral matter and carbon conversion on volatilization of alkalis and gasification rate were examined. The catalytic effectiveness of alkali metal on the gasification rate was affected by the addition of kaolinite and coal particle size. The char gasification rate was much enhanced by the addition of NazSiOl.
Fuel and Energy Abstracts
March 1997
93