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01216 Sorbent development for continuous regenerative H2S removal in a rotating monolith reactor
04
the larger fly ash was present as unburned semicoke; the carbon contained in the smaller fly ash was present as carbon black and pyrolytic (graphitic) corhon.
Pyrolysis 97101206 sorbents obtaining
of
wood
and
biomass
waste
with
Dohelr, G. er ul. l’vht.cme I’rocesy C%ern. Sl,ruco\‘ur~i I>revcc. 1996, 241-2.52. Examines the role of lignin during the formation of active carbon\ in the proces\ of wood pyrolysis. The study shows that it is poasihle to regulate porous structure characteristics of the active carbons varying both the pyrolysis regime and activator dosage.
97101214
97/01206
The reactor filter system for multipollutant
device
Solvent
extraction
of hetero-compounds
control
97101209 a mixture
97101217
Recovery of zinc from lead blast furnace slag using of natural gas and air in top submerged lancing
Waladan. M. Zinc Lrrrd 95. Pm-. Int. Symp. Extr. Appl. Zinc Lead. 1995. 520-53 I. Discusses the top submerged lacing Sirosmelt technology which has been established and applied to recovery of a range of metals, from a number of feed stocks, on a scale ranging from 50 kg to I5 tonnes per hour. Sirosmelt has heen applied to tin, lead. copper, zinc, nickel, silver and gold in countries such as USA. Holland, Mexico, Australia, Zimbabwe, India, Korea and South Africa. The global search for more environmentally acceptable mineral processing techniques puts Sirosmelt technology into a very good position due to high fuel efficiency, tight furnace sealing and a waste product (slag) which is low in heavy metals. Other details of Sirosmelt technology are also discussed in this article.
structures residues
and
Futamura, S. &kitun Kagaku Kaigi Happ_yo Ronhunshu, 1994. 31, 79-82 (In Japanese). The asphaltene equivalent of coal liquefaction residues acted as good hydrogen donors in the hydrogenolysis of trans.stilbene (model compound), transferring their inherent hydrogens and regenerating solvent. There was no apparent correlation between the structural parameters of the residues and their hydrogen-donating ahilities.
respirable
dust generation
Jha, P. er crl. A&. &cup. Etwiron. Hyg., 1996, I I. (7), 655-661. In this study experiments were conducted in orderto establish relationships between the yield of respirable dust from the continuous mining process and coal seam properties. Seven coal seams were investigated over 44 shifts of operation.
97101212 Rheology trated fly ash-gypsum clustering
and sedimentation water suspensions
of highly concenin terms of particle
Riha, P. J. Hydrol. Hydromech., 1996, 44, (l), 39-48. This paper investigates the sedimentation and flow properties of highly concentrated fly ash-gypsum water suspensions. Batch sedimentation technique is used for the measurement of particle settling rate. The rheological measurements are carried out using a rotational viscometer with two coaxial cylinders. The constitutive equation of suspension flow behavior is proposed as well as the description of rate of particle settling. The comparison of predictions with experimental data is fairly good. It is concluded that the proposed description can be used for estimation of pipeline flow of highly concentrated fly ash-gypsum suspensions.
97101213 Rotary reductor slag deposit prevention
burner
from coal
Matsumura, A. et ul. Sekiturl Kugakrr Kurgi Hoppr’r~ Ror~hrr~~vhrr. lYY4. 31, 1X0-192 (In Japanese). This study involved the solvent extraction of phenolic compounds from Wyoming coal-derived kerosine (middle-distillate) fraction was studied in a hatch and continuous solvent extraction plant. The selectivities of phenol and cresols in extracts decreased with increaGng MeOH-feed ratio. A material balance was calculated from the data hy the continuou’i solvent extraction operation.
97101216 Sorbent development for continuous H2S removal in a rotating monolith reactor
97101211 Relationships between and coal seam characteristics
to fuels
in coal combustors
Seeker. W. R. er ul. 1i.S. Ettriror~. Prot. Agency. Rrs. Da’., [Rep.] EPA, 1996. (EPA-6OO!R-9(,-0(18. Proceedings: Multipollutant Sorhent Reactivity Workshop, 1994), 3X2-390. Concerns a reactor filter system which user the potential of a fabric filter installed immediately downstream of a thermal treatment process to remove toxic metals. particulate matter. and unburned organic solids from flue gases. The use of combinations of sorhents and reactor filters to achieve multipollutant control is als(~ discussed.
Relationship between chemical 97/01210 hydrogen-donating abilities of coal liquefaction
related
Jpn. Kokai Tokkyo Koho JP OH, 1x8. 7X2 [Y6, 18X, Kate. S. and Fukuda, H. 7X2] (Cl. ClOJ3i46). 23 Jul 1996. Appl. 9513. 971. 13 Jan IYYS. 4 pp (In Japanese). Details how, in spouted-hed coal gasification, the slag is rapidly discharged from the hottom part of a coal comhustor hy a rotating plate comprising a means for traping and feeding the molten slag into the top end of funnelshaped outlet, and a means for preventing turbulent flow of molten slag inside the comhustor.
97101215 liquid. (2) 97iO1207 Pyrolysis process water utilization Siddoway. M. A. U.S. US 5, 547. 548 (Cl. 201-29: ClOB211 IX). 20 Aug lY9h, Appl. 276, 319, IX Jul 1904. 6 pp. Presents a method for the reduction of undesirable contaminants in process water produced in pyrolysis of low-rank coal. The method uses the process water to quench and rehydrate a char produced by pyrolysis with the contaminants in the waste water heing ahsorhed by the char.
Slag discharge
By-products
used for coal gasifler
for
Jpn. Kokai Tokkyo Koho JP 08, 209, 156 [96, 209, Kai, S. and Hayata, Y. 1561 (Cl. ClOJ3146). 13 Aug 1996, Appl. 95115, 777, 2 Feh 1995, 5 pp (In Japanese). The burner desrihed in this article includes a water-cooling scraper arranged at such an angle to the rotary burner so as to prevent the deposition of slag.
regenerative
Con.. I Chem. Eng,, 1996, 74, (5). 713-718. Bakker, W. J. W. et ul. Discuase\ the development of a high capacity and regenerahle manganese based sorhent for desulfurization of hot dry fuel gas from coal gasification. A deactivation test of 6.5 subsequent sulfidation and regeneration cycles showed minor deactivation during the first cycles followed hy a stable performance.
Stabilization
of ashes
Ragnarsson, S. (Ahh Flaekt Ah. Swed.) PCT lnt. Appl. WO Oh IO, 304 (Cl. 80983100). 27 Jun 1996. SE Appl. 9414. 453, 22 Dee 1904, 18 pp. Presents a method and a device for the stabilization of ash, preferably fly ash. The ash is first extracted with an acid aqueous solution, (preferably) washed with an aqueous solution hefore being alkalized with an aqueous solution of a water-soluble alkali (e.g. soda), and treated with an aqueous solution of a water-soluble sulfide, such as sodium sulfide, in order to convert leachable material in the ash to insoluble sulfide. The ash thus stahilized is then washed, preferably with water. The device consists of a hand filter with an inlet and an outlet end for the entry and exit of unstabilized and stabilized ash repectivcly. ‘The band filter comprise\ a station for acid extraction of the ash, a washing station, a station for alkalization of the ash, a station for sulfide treatment of the ash and a washing station.
Structural characterization of tar from a coal 97/01216 gasification plant comparison with a coke oven tar and a crude oil flash-column residue Pindoria R. V. el al. Fuel, 1997, 76. (2). 101-I Ii Presents the results of a comparative study between residual tar from a coal gasification plant, a coke oven tar and a crude oil flash-column residue.
97101219
Structural
products
manufactured
from fly ash
M. U.S. US 5, 534, OS8 (Cl. 106-708; CO4Bl2/00), Strabala, W. Appl. 379, 949, 27 Jan 1995, 5 pp. The product described is manufactured from a composition cellulose-based material and an adhesive hinder. The product strength with light weight. can he sawn or hammered as wood resistant. The composition is especially useful for forming products such as bricks, panels, roof shingles. studs, etc.
97101220 A study gasifier using CJTF
on the slagging
behavior
9 Jul lYY6. of fly ash. has good and is fire structural
of coal ash in
Kim, H. T. et al. Proc. Annu. Int. Pittsburgh Cm/ Cmf., 1995, 12. 13-1X. Presents a study into the slagging behaviour of various coals during gasification using a drop tube furnace. The study found that mineral matter of the Alaskan coal was transformed to mullite and gehlenite during gasification. Ultimately, the minerals were transformed to amorphous aluminosilicate phase.
97101221 Sulfur using fly ash
removal
from
lignite
by oxydesulfurization
Yaman, S. and Kucukhayrak, S. Fuel, 1997, 76, (I), 73-77. The sulfur removal potential of the water-soluble fraction oxydesulfurization of coal was investigated with Iignites. 97101222 Surface-coated tion of reduced iron
reduced
of fly ash in
iron and oxidation
preven-
Kawai, T. et al. Jpn. Kokai Tokkyo Koho JP 08, 260, 172 [96, 260. 1721 (Cl. C23FlS/OO), 8 Ott 1996, Appl. 95/64,455, 23 Mar 1995.6 pp (In Japanese). Explains the use of an organic film-forming substance (e.g. a hydrocarbon, such as pitch, asphalt, coal tar, coal liquids. and petroleum refining residues) and optionally a COz-forming substance (e.g. a carbonate of Ca, Mg, or Mn) to protect Fe from oxidation.
Fuel and Energy Abstracts
March 1997
97
the larger fly ash was present as unburned semicoke; the carbon contained in the smaller fly ash was present as carbon black and pyrolytic (graphitic) corhon.
Pyrolysis 97101206 sorbents obtaining
of
wood
and
biomass
waste
with
Dohelr, G. er ul. l’vht.cme I’rocesy C%ern. Sl,ruco\‘ur~i I>revcc. 1996, 241-2.52. Examines the role of lignin during the formation of active carbon\ in the proces\ of wood pyrolysis. The study shows that it is poasihle to regulate porous structure characteristics of the active carbons varying both the pyrolysis regime and activator dosage.
97101214
97/01206
The reactor filter system for multipollutant
device
Solvent
extraction
of hetero-compounds
control
97101209 a mixture
97101217
Recovery of zinc from lead blast furnace slag using of natural gas and air in top submerged lancing
Waladan. M. Zinc Lrrrd 95. Pm-. Int. Symp. Extr. Appl. Zinc Lead. 1995. 520-53 I. Discusses the top submerged lacing Sirosmelt technology which has been established and applied to recovery of a range of metals, from a number of feed stocks, on a scale ranging from 50 kg to I5 tonnes per hour. Sirosmelt has heen applied to tin, lead. copper, zinc, nickel, silver and gold in countries such as USA. Holland, Mexico, Australia, Zimbabwe, India, Korea and South Africa. The global search for more environmentally acceptable mineral processing techniques puts Sirosmelt technology into a very good position due to high fuel efficiency, tight furnace sealing and a waste product (slag) which is low in heavy metals. Other details of Sirosmelt technology are also discussed in this article.
structures residues
and
Futamura, S. &kitun Kagaku Kaigi Happ_yo Ronhunshu, 1994. 31, 79-82 (In Japanese). The asphaltene equivalent of coal liquefaction residues acted as good hydrogen donors in the hydrogenolysis of trans.stilbene (model compound), transferring their inherent hydrogens and regenerating solvent. There was no apparent correlation between the structural parameters of the residues and their hydrogen-donating ahilities.
respirable
dust generation
Jha, P. er crl. A&. &cup. Etwiron. Hyg., 1996, I I. (7), 655-661. In this study experiments were conducted in orderto establish relationships between the yield of respirable dust from the continuous mining process and coal seam properties. Seven coal seams were investigated over 44 shifts of operation.
97101212 Rheology trated fly ash-gypsum clustering
and sedimentation water suspensions
of highly concenin terms of particle
Riha, P. J. Hydrol. Hydromech., 1996, 44, (l), 39-48. This paper investigates the sedimentation and flow properties of highly concentrated fly ash-gypsum water suspensions. Batch sedimentation technique is used for the measurement of particle settling rate. The rheological measurements are carried out using a rotational viscometer with two coaxial cylinders. The constitutive equation of suspension flow behavior is proposed as well as the description of rate of particle settling. The comparison of predictions with experimental data is fairly good. It is concluded that the proposed description can be used for estimation of pipeline flow of highly concentrated fly ash-gypsum suspensions.
97101213 Rotary reductor slag deposit prevention
burner
from coal
Matsumura, A. et ul. Sekiturl Kugakrr Kurgi Hoppr’r~ Ror~hrr~~vhrr. lYY4. 31, 1X0-192 (In Japanese). This study involved the solvent extraction of phenolic compounds from Wyoming coal-derived kerosine (middle-distillate) fraction was studied in a hatch and continuous solvent extraction plant. The selectivities of phenol and cresols in extracts decreased with increaGng MeOH-feed ratio. A material balance was calculated from the data hy the continuou’i solvent extraction operation.
97101216 Sorbent development for continuous H2S removal in a rotating monolith reactor
97101211 Relationships between and coal seam characteristics
to fuels
in coal combustors
Seeker. W. R. er ul. 1i.S. Ettriror~. Prot. Agency. Rrs. Da’., [Rep.] EPA, 1996. (EPA-6OO!R-9(,-0(18. Proceedings: Multipollutant Sorhent Reactivity Workshop, 1994), 3X2-390. Concerns a reactor filter system which user the potential of a fabric filter installed immediately downstream of a thermal treatment process to remove toxic metals. particulate matter. and unburned organic solids from flue gases. The use of combinations of sorhents and reactor filters to achieve multipollutant control is als(~ discussed.
Relationship between chemical 97/01210 hydrogen-donating abilities of coal liquefaction
related
Jpn. Kokai Tokkyo Koho JP OH, 1x8. 7X2 [Y6, 18X, Kate. S. and Fukuda, H. 7X2] (Cl. ClOJ3i46). 23 Jul 1996. Appl. 9513. 971. 13 Jan IYYS. 4 pp (In Japanese). Details how, in spouted-hed coal gasification, the slag is rapidly discharged from the hottom part of a coal comhustor hy a rotating plate comprising a means for traping and feeding the molten slag into the top end of funnelshaped outlet, and a means for preventing turbulent flow of molten slag inside the comhustor.
97101215 liquid. (2) 97iO1207 Pyrolysis process water utilization Siddoway. M. A. U.S. US 5, 547. 548 (Cl. 201-29: ClOB211 IX). 20 Aug lY9h, Appl. 276, 319, IX Jul 1904. 6 pp. Presents a method for the reduction of undesirable contaminants in process water produced in pyrolysis of low-rank coal. The method uses the process water to quench and rehydrate a char produced by pyrolysis with the contaminants in the waste water heing ahsorhed by the char.
Slag discharge
By-products
used for coal gasifler
for
Jpn. Kokai Tokkyo Koho JP 08, 209, 156 [96, 209, Kai, S. and Hayata, Y. 1561 (Cl. ClOJ3146). 13 Aug 1996, Appl. 95115, 777, 2 Feh 1995, 5 pp (In Japanese). The burner desrihed in this article includes a water-cooling scraper arranged at such an angle to the rotary burner so as to prevent the deposition of slag.
regenerative
Con.. I Chem. Eng,, 1996, 74, (5). 713-718. Bakker, W. J. W. et ul. Discuase\ the development of a high capacity and regenerahle manganese based sorhent for desulfurization of hot dry fuel gas from coal gasification. A deactivation test of 6.5 subsequent sulfidation and regeneration cycles showed minor deactivation during the first cycles followed hy a stable performance.
Stabilization
of ashes
Ragnarsson, S. (Ahh Flaekt Ah. Swed.) PCT lnt. Appl. WO Oh IO, 304 (Cl. 80983100). 27 Jun 1996. SE Appl. 9414. 453, 22 Dee 1904, 18 pp. Presents a method and a device for the stabilization of ash, preferably fly ash. The ash is first extracted with an acid aqueous solution, (preferably) washed with an aqueous solution hefore being alkalized with an aqueous solution of a water-soluble alkali (e.g. soda), and treated with an aqueous solution of a water-soluble sulfide, such as sodium sulfide, in order to convert leachable material in the ash to insoluble sulfide. The ash thus stahilized is then washed, preferably with water. The device consists of a hand filter with an inlet and an outlet end for the entry and exit of unstabilized and stabilized ash repectivcly. ‘The band filter comprise\ a station for acid extraction of the ash, a washing station, a station for alkalization of the ash, a station for sulfide treatment of the ash and a washing station.
Structural characterization of tar from a coal 97/01216 gasification plant comparison with a coke oven tar and a crude oil flash-column residue Pindoria R. V. el al. Fuel, 1997, 76. (2). 101-I Ii Presents the results of a comparative study between residual tar from a coal gasification plant, a coke oven tar and a crude oil flash-column residue.
97101219
Structural
products
manufactured
from fly ash
M. U.S. US 5, 534, OS8 (Cl. 106-708; CO4Bl2/00), Strabala, W. Appl. 379, 949, 27 Jan 1995, 5 pp. The product described is manufactured from a composition cellulose-based material and an adhesive hinder. The product strength with light weight. can he sawn or hammered as wood resistant. The composition is especially useful for forming products such as bricks, panels, roof shingles. studs, etc.
97101220 A study gasifier using CJTF
on the slagging
behavior
9 Jul lYY6. of fly ash. has good and is fire structural
of coal ash in
Kim, H. T. et al. Proc. Annu. Int. Pittsburgh Cm/ Cmf., 1995, 12. 13-1X. Presents a study into the slagging behaviour of various coals during gasification using a drop tube furnace. The study found that mineral matter of the Alaskan coal was transformed to mullite and gehlenite during gasification. Ultimately, the minerals were transformed to amorphous aluminosilicate phase.
97101221 Sulfur using fly ash
removal
from
lignite
by oxydesulfurization
Yaman, S. and Kucukhayrak, S. Fuel, 1997, 76, (I), 73-77. The sulfur removal potential of the water-soluble fraction oxydesulfurization of coal was investigated with Iignites. 97101222 Surface-coated tion of reduced iron
reduced
of fly ash in
iron and oxidation
preven-
Kawai, T. et al. Jpn. Kokai Tokkyo Koho JP 08, 260, 172 [96, 260. 1721 (Cl. C23FlS/OO), 8 Ott 1996, Appl. 95/64,455, 23 Mar 1995.6 pp (In Japanese). Explains the use of an organic film-forming substance (e.g. a hydrocarbon, such as pitch, asphalt, coal tar, coal liquids. and petroleum refining residues) and optionally a COz-forming substance (e.g. a carbonate of Ca, Mg, or Mn) to protect Fe from oxidation.
Fuel and Energy Abstracts
March 1997
97