- Email: [email protected]
02103 Injection of SO2 sorbents into coal-fired boilers. II. Injection of the sorbent. Conclusions
08
Steam raising (boiler operation/design)
and higher heating value of 1600 Kcalikg plants. Potential of power generation from washery rejects and quantum of coal conserved by installing this capacity has also been worked out.
Fuel gas from 97/02100 steam generation system
waste
solids
and
corrosion-free
Kate. J. et al. Jpn. Kokai Tokkyo Koho JP 08,189,623 [Yh,lXY,623] (Cl. F23G5/ 027), 23 Jul IY9h. Appl. 9512.158, 10 Jan 1995: 5 pp. (In Japanese) The gasification of a waste solid to a fuel gas takes place, and steam is generated using the gas fuel in this system. The system comprises a highcycle regenerating accumulator type combustor (cyclic burner), a corrosionresistant heat exchanger for heating an inert gas, an inert gas circulation loop, and a steam generator in the loop.
97/02101
Heat-resistant
austenitic
steel
Nishimura, N. et al. Jpn. Kokai Tokkyo Koho JP 08.225,gYO [96,225,X90] (Cl. C22C38/00), 3 Sep 1996, Appl. 95/26,492, I5 Feb 1995. 4 pp. (In Japanese) The steel is suitable for heat-exchange pipes in chemical manufacturing plants and boilers in coal-fired power plants.
Influence 97102102 boiler configuration
of fuel
type
and
steam
cycle
on CFB
Bernstein, N. et al. Proc. I,?(. Co~rf: Nttid. Bed Conthrrsf.. lY9.5, 13, (I), 27-37. The configuration of a circulating fluidized bed (CFB) boiler is influenced by the fuel type that is to he burned and the specified steam cycle conditions. This paper describes the issues that are addressed when designing a CFB boiler.
Injection of SOa sorbents 97IO2103 Injection of the sorbent. Conclusions
into coal-fired
boilers.
II.
H. S. Ing. Qtrint. (Madrid), lYY6, 28, (325). Collado. F J. and Montenegro, 181-187. (In Spanish) In order to simulate flow injection of lime sorbent into a coal fired boiler. a dynamic model was used to evaluate sorbent injection as an alternative to conventional scrubbers for desulfurization.
97/02110 Predictions grind coal fuels
of boiler performance
when firing fine
Hargrove, M. J. ei al. SuppI. Coul Fine.s: Udaimrd Fuel. Pup. lnt. TN/~. Conf: Coal CJtil. Fuel Sy,st., Zht, 1996, 93-104. Edited by Serkin, S. D. Coal & Slurry Technology Association, Washington. DC. The authors explore the performance analysis results and the economic impacts that can be expected when firing coal ground to different fineness levels in two utility steam generators.
97102111 The Provence ready for operation
250 MWe unit: the largest CFB boiler
Jaud, P. ct al. Proc. /nt. Conf Fluid. Ed Comhr.v/., lY95. 13, (2), 721-728. ‘Circulating fluidized bed’ is one of the most promising new Clean Coal Technologies and has been extensively developed by independent power producers (IPPs) especially in the United States. Today. the largest project approaching operation is the 250 MWe Provence CFB boiler, located in the south of France. At such a size. the CFB technique has now reached a capacity corresponding to thermal power plants operated hy utilities. This new unit, with a ‘pant leg’ design, is also a very important step towards larger size i.e. 400 MWe and greater. The purpose of the Provence project was to replace the existing pulverized coal boiler unit 4, commissioned in 1967. of the ProvenceGardanne power plant, with a new CFB boiler while reusing most of the existing equipment. The first firing of the boiler is due in May 1995. The progress is described in the construction of the plant and technical details are provided of the new boiler and auxiliaries. The associated R&D program designed to give a thorough evaluation of thi\ boiler with a view to the design of larger CFBs in the future.
97102112 Redesign of coal-grinding-mill effects on boiler operation
classifiers
and its
Salewski, G. et al. VCR Tech. VW. G~os.sk~aftwe~kshet~.., /Tech. Ber.J VGBTB, 199f1, (VGB-TB I II), Kraftwerkskomponenten IOYh). I7 pp. Paer V7 (In German) As an alternative to the more conventional sieves in size classification of coal in a coal grinding-preparation unit. design variations are presented for a novel rotating gas-driven size classifier. Ground dried coal is fed through a central tube at the top and gas is introduced at a given velocity through the tube from the bottom in this design. The coal particles arc separated by size at the top of the apparatus
Mechanism of formation and means of suppressing 97102104 nitrogen oxides in pulverized coal boilers Babii. V. 1. e( al. Energefik, 1996. (h), g-12. (In Russian) Topics discussed include factors affecting nitrogen oxide emission during low-emission burners. excess air and coal pulverized coal combustion, preheating effects, and staged combustion.
Mechanism of formation and of impact on the pipes 97102105 of fire chambers screens of steam boilers of certain components of fire chamber flame during combustion of anthracite fines Kaminskii, V. P. Teploer~ergetika (Moscow), 1996, (h), 59-h4. (In Russian) The characteristics and mechanism of high-temperature external corrosion of the fire box screens of steam boilers are presented in this review.
Micronized 97102106 utility applications
coal firing
boiler facility
of St. Andrae
and
Zeltweg
steam
Schroefelbauer. H. EI al. VGB Krnfi!+erks/cch. 1996, 76. (6). 449-456. (In German) The article describes measures exemplified by St Andrea Power Station in Austria which comprise conversion of the firing system from lignite to bituminous coal, integration of a biomass grate for combined combustion including biomass, conversion of the flue gas desulfurization process from the pure dry system to a semidry system, complete renovation of the unit control system, and partial refurbishment of the steam turbine. The conversion will result in an increase in unit capacity and a reduction in variable operating costs for fuel and additives.
Operation of a low NO, swirl 97102106 burner parameters on coal particle behavior
burner:
Xu. G. and Scaroni. A. W. Proc. Amu. . ,~. . . ,>, II IU-1 IUO. The recommendations for the operation burner in a fuel oil designed industrial setting the secondary/tertiary air flow at and positioning the tertiary air ring out
Coal Cd.,
Int. Pittshah
Effect
of
1995, 12.
of the low-NO, pulverized coal boiler are: swirling the flow (0.6). 6513.5, using a Free Vortex Swirler, of the quarl entrance.
Operation of of BK2-500-140-1 boiler at decreased 97102109 excess air during burning of Irsha-Borodinski coal Kozlov,
170
S. G.
et al.
Energetik,
1996, (7)
Fuel and Energy Abstracts
S-7. (In Russian)
May 1997
wood fuel: fuel feed system
for a pulver-
Benjamin, W. H. Report 1996, (NYSERDA-Y&I: Order No. PBYo190525GAR). I I1 pp. Avail. NTIS. From (%I.. Re/?. A~~rrntrttcc. /,tder (U. S.) 1996, 96. (19). (19-00).804. The New York State Kr Electricity Corporation conducted a pilot test program to evaluate how feasible the co-firing of a pulverized coal plant with renewable wood fuels would be. The goal was to estahli\h if such a cofiring system could reduce air emissions while maintaining good operational procedures and cost controls. The report recommended further evaluation of the generation and emission impacts using woods of varied moisture contents and at varied British thermal unit input rates to determine if a driving system is a cost-effective option.
and potential
Damiani, P. J. et al. Proc. Anrtrr. Irtt. Pirthwglt Coal Cmf., lYY5, 12, 44-51. This study reviews the advantages and disadvantages of a micronized versus a stoker fired plant, in an economic analysis. It explores any special design considerations required for micronized plant design and its potential uses.
Modernization 97102107 power station, Austria
Renewal ized coal boiler
97102113
97102114 Steam activation of a bituminous coal in a multistage fluidized bed pilot plant: operation and simulation model Martin-Gullon, I. et al. Id. Eng. Chem. Rrs., 19Yh, 35, (1 I). 4130-4146. The development and application of a hydrodynamic and kinetic model to simulate the experimental data from a three-stage fluidized hed pilot plant with downcomers was undertaken. This was used to study the activated carbon production from a Spanish bituminous coal by steam gasification, With the kinetic equation and the pilot plant’s experimental solids residence time distribution, the model simulates the overall process that takes place in the reactor. The proposed model is able to reproduce the experimental results satisfactorily.
97102115 Temperature control method of boiler inlet of coke dry quencher and manufacturing method for coke fines Sate, Y. er al. Jpn. Kokai Tokkyo Koho JP 08,199,170 [Y6.lY9.170] (Cl. ClOB39/02), h Aug 1996, App]. 95/7,488, 20 Jan 1995; IO pp. (In Japanese) A method for the control of the boiler inlet temperature at target temperature is described in this paper. It comprises introducing the coal charge-derived powders, having unburnt residual volatile matter, to the prechamber of the CDG with air for supply of combustion heat. thus increasing the inlet temperature of the steam boiler.
Test results from the co-firing of coal water slurry 97102116 fuel in a 32 megawatt pulverized coal boiler Battista, J. J. et al. Coal Firres: Utdaintcd Fuel, /Attrttr. Tech. c‘ottf/. 30th. 1995, l-12. Edited by Serloin. S. D. Coal X: Slurry Technology Association, Washington, DC. This paper studies the co-firing of low-solids coal water slurry in a pulverized coal-fired boiler. Under the conditions tested, co-firing resulted in a reduction of NO, by IS-20%.
Steam raising (boiler operation/design)
and higher heating value of 1600 Kcalikg plants. Potential of power generation from washery rejects and quantum of coal conserved by installing this capacity has also been worked out.
Fuel gas from 97/02100 steam generation system
waste
solids
and
corrosion-free
Kate. J. et al. Jpn. Kokai Tokkyo Koho JP 08,189,623 [Yh,lXY,623] (Cl. F23G5/ 027), 23 Jul IY9h. Appl. 9512.158, 10 Jan 1995: 5 pp. (In Japanese) The gasification of a waste solid to a fuel gas takes place, and steam is generated using the gas fuel in this system. The system comprises a highcycle regenerating accumulator type combustor (cyclic burner), a corrosionresistant heat exchanger for heating an inert gas, an inert gas circulation loop, and a steam generator in the loop.
97/02101
Heat-resistant
austenitic
steel
Nishimura, N. et al. Jpn. Kokai Tokkyo Koho JP 08.225,gYO [96,225,X90] (Cl. C22C38/00), 3 Sep 1996, Appl. 95/26,492, I5 Feb 1995. 4 pp. (In Japanese) The steel is suitable for heat-exchange pipes in chemical manufacturing plants and boilers in coal-fired power plants.
Influence 97102102 boiler configuration
of fuel
type
and
steam
cycle
on CFB
Bernstein, N. et al. Proc. I,?(. Co~rf: Nttid. Bed Conthrrsf.. lY9.5, 13, (I), 27-37. The configuration of a circulating fluidized bed (CFB) boiler is influenced by the fuel type that is to he burned and the specified steam cycle conditions. This paper describes the issues that are addressed when designing a CFB boiler.
Injection of SOa sorbents 97IO2103 Injection of the sorbent. Conclusions
into coal-fired
boilers.
II.
H. S. Ing. Qtrint. (Madrid), lYY6, 28, (325). Collado. F J. and Montenegro, 181-187. (In Spanish) In order to simulate flow injection of lime sorbent into a coal fired boiler. a dynamic model was used to evaluate sorbent injection as an alternative to conventional scrubbers for desulfurization.
97/02110 Predictions grind coal fuels
of boiler performance
when firing fine
Hargrove, M. J. ei al. SuppI. Coul Fine.s: Udaimrd Fuel. Pup. lnt. TN/~. Conf: Coal CJtil. Fuel Sy,st., Zht, 1996, 93-104. Edited by Serkin, S. D. Coal & Slurry Technology Association, Washington. DC. The authors explore the performance analysis results and the economic impacts that can be expected when firing coal ground to different fineness levels in two utility steam generators.
97102111 The Provence ready for operation
250 MWe unit: the largest CFB boiler
Jaud, P. ct al. Proc. /nt. Conf Fluid. Ed Comhr.v/., lY95. 13, (2), 721-728. ‘Circulating fluidized bed’ is one of the most promising new Clean Coal Technologies and has been extensively developed by independent power producers (IPPs) especially in the United States. Today. the largest project approaching operation is the 250 MWe Provence CFB boiler, located in the south of France. At such a size. the CFB technique has now reached a capacity corresponding to thermal power plants operated hy utilities. This new unit, with a ‘pant leg’ design, is also a very important step towards larger size i.e. 400 MWe and greater. The purpose of the Provence project was to replace the existing pulverized coal boiler unit 4, commissioned in 1967. of the ProvenceGardanne power plant, with a new CFB boiler while reusing most of the existing equipment. The first firing of the boiler is due in May 1995. The progress is described in the construction of the plant and technical details are provided of the new boiler and auxiliaries. The associated R&D program designed to give a thorough evaluation of thi\ boiler with a view to the design of larger CFBs in the future.
97102112 Redesign of coal-grinding-mill effects on boiler operation
classifiers
and its
Salewski, G. et al. VCR Tech. VW. G~os.sk~aftwe~kshet~.., /Tech. Ber.J VGBTB, 199f1, (VGB-TB I II), Kraftwerkskomponenten IOYh). I7 pp. Paer V7 (In German) As an alternative to the more conventional sieves in size classification of coal in a coal grinding-preparation unit. design variations are presented for a novel rotating gas-driven size classifier. Ground dried coal is fed through a central tube at the top and gas is introduced at a given velocity through the tube from the bottom in this design. The coal particles arc separated by size at the top of the apparatus
Mechanism of formation and means of suppressing 97102104 nitrogen oxides in pulverized coal boilers Babii. V. 1. e( al. Energefik, 1996. (h), g-12. (In Russian) Topics discussed include factors affecting nitrogen oxide emission during low-emission burners. excess air and coal pulverized coal combustion, preheating effects, and staged combustion.
Mechanism of formation and of impact on the pipes 97102105 of fire chambers screens of steam boilers of certain components of fire chamber flame during combustion of anthracite fines Kaminskii, V. P. Teploer~ergetika (Moscow), 1996, (h), 59-h4. (In Russian) The characteristics and mechanism of high-temperature external corrosion of the fire box screens of steam boilers are presented in this review.
Micronized 97102106 utility applications
coal firing
boiler facility
of St. Andrae
and
Zeltweg
steam
Schroefelbauer. H. EI al. VGB Krnfi!+erks/cch. 1996, 76. (6). 449-456. (In German) The article describes measures exemplified by St Andrea Power Station in Austria which comprise conversion of the firing system from lignite to bituminous coal, integration of a biomass grate for combined combustion including biomass, conversion of the flue gas desulfurization process from the pure dry system to a semidry system, complete renovation of the unit control system, and partial refurbishment of the steam turbine. The conversion will result in an increase in unit capacity and a reduction in variable operating costs for fuel and additives.
Operation of a low NO, swirl 97102106 burner parameters on coal particle behavior
burner:
Xu. G. and Scaroni. A. W. Proc. Amu. . ,~. . . ,>, II IU-1 IUO. The recommendations for the operation burner in a fuel oil designed industrial setting the secondary/tertiary air flow at and positioning the tertiary air ring out
Coal Cd.,
Int. Pittshah
Effect
of
1995, 12.
of the low-NO, pulverized coal boiler are: swirling the flow (0.6). 6513.5, using a Free Vortex Swirler, of the quarl entrance.
Operation of of BK2-500-140-1 boiler at decreased 97102109 excess air during burning of Irsha-Borodinski coal Kozlov,
170
S. G.
et al.
Energetik,
1996, (7)
Fuel and Energy Abstracts
S-7. (In Russian)
May 1997
wood fuel: fuel feed system
for a pulver-
Benjamin, W. H. Report 1996, (NYSERDA-Y&I: Order No. PBYo190525GAR). I I1 pp. Avail. NTIS. From (%I.. Re/?. A~~rrntrttcc. /,tder (U. S.) 1996, 96. (19). (19-00).804. The New York State Kr Electricity Corporation conducted a pilot test program to evaluate how feasible the co-firing of a pulverized coal plant with renewable wood fuels would be. The goal was to estahli\h if such a cofiring system could reduce air emissions while maintaining good operational procedures and cost controls. The report recommended further evaluation of the generation and emission impacts using woods of varied moisture contents and at varied British thermal unit input rates to determine if a driving system is a cost-effective option.
and potential
Damiani, P. J. et al. Proc. Anrtrr. Irtt. Pirthwglt Coal Cmf., lYY5, 12, 44-51. This study reviews the advantages and disadvantages of a micronized versus a stoker fired plant, in an economic analysis. It explores any special design considerations required for micronized plant design and its potential uses.
Modernization 97102107 power station, Austria
Renewal ized coal boiler
97102113
97102114 Steam activation of a bituminous coal in a multistage fluidized bed pilot plant: operation and simulation model Martin-Gullon, I. et al. Id. Eng. Chem. Rrs., 19Yh, 35, (1 I). 4130-4146. The development and application of a hydrodynamic and kinetic model to simulate the experimental data from a three-stage fluidized hed pilot plant with downcomers was undertaken. This was used to study the activated carbon production from a Spanish bituminous coal by steam gasification, With the kinetic equation and the pilot plant’s experimental solids residence time distribution, the model simulates the overall process that takes place in the reactor. The proposed model is able to reproduce the experimental results satisfactorily.
97102115 Temperature control method of boiler inlet of coke dry quencher and manufacturing method for coke fines Sate, Y. er al. Jpn. Kokai Tokkyo Koho JP 08,199,170 [Y6.lY9.170] (Cl. ClOB39/02), h Aug 1996, App]. 95/7,488, 20 Jan 1995; IO pp. (In Japanese) A method for the control of the boiler inlet temperature at target temperature is described in this paper. It comprises introducing the coal charge-derived powders, having unburnt residual volatile matter, to the prechamber of the CDG with air for supply of combustion heat. thus increasing the inlet temperature of the steam boiler.
Test results from the co-firing of coal water slurry 97102116 fuel in a 32 megawatt pulverized coal boiler Battista, J. J. et al. Coal Firres: Utdaintcd Fuel, /Attrttr. Tech. c‘ottf/. 30th. 1995, l-12. Edited by Serloin. S. D. Coal X: Slurry Technology Association, Washington, DC. This paper studies the co-firing of low-solids coal water slurry in a pulverized coal-fired boiler. Under the conditions tested, co-firing resulted in a reduction of NO, by IS-20%.