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Development of an advanced high efficiency coal combustor for boiler retrofit. Quarterly report, May 1987--July 1987

Description: In summary, Task 1 has succeeded in developing innovative swirler designs which operate at improved mechanical efficiency and promise to decrease operating costs when applied to an industrial boiler. The prototype HEACC has been designed and incorporates this swirler along with other innovative, flexible and efficiency-oriented features. During this quarter, further testing was conducted with the swirl-jet atomizer to assess the effect of MCWF heating. These results are shown in Figure 15. As can be seen, the spray quality steadily improved with increasing temperature over the range of 25{degrees}C (77{degrees}F) to 100{degrees}C (212{degrees}F). This is due to a steady reduction in fuel viscosity as demonstrated in Figure 16. From 100{degrees}C to 138{degrees}C (280{degrees}F) only a minor decrease in MMD is noted, but more significantly, a further decrease in SMD can be seen. This means that fewer large droplets were produced at the elevated fuel temperatures. This will have a positive effect on improved combustion and yield higher carbon burn-out.
Date: December 31, 1987
Creator: Rini, M. J.
Partner: UNT Libraries Government Documents Department

A pulverized coal fuel injector

Description: A pulverized coal fuel injector contains an acceleration section to improve the uniformity of a coal-air mixture to be burned. An integral splitter is provided which divides the coal-air mixture into a number separate streams or jets, and a center body directs the streams at a controlled angle into the primary zone of a burner. The injector provides for flame shaping and the control of NO/NO{sub 2} formation.
Date: December 31, 1991
Creator: Rini, M. J. & Towle, D. P.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit

Description: The overall objective of this program is to develop a high efficiency advanced coal combustor (HEACC) for coal-based fuels capable of being retrofitted to industrial boilers originally designed for firing natural gas, distillate, and/or residual oil. The HEACC system is to be capable of firing microfine coal water fuel (MCWF), MCWF with alkali sorbent (for SO{sub 2} reduction), and dry microfine coal. Design priorities for the system are that it be simple to operate and will offer significant reductions in NO{sub x}, SO{sub x}, and particulate emissions as compared with current coal fired combustor technology. The specific objective of this report is to document the work carried out under Task 1.0 of this contract, Cold Flow Burner Development''. As are detailed in the report, key elements of this work included primary air swirler development, burner register geometry design, cold flow burner model testing, and development of burner scale up criteria.
Date: October 1, 1989
Creator: LaFlesh, R.C.; Rini, M.J. & McGowan, J.G.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit

Description: The objective of this program is to develop an advanced coal- combustion system capable of being retrofitted to industrial boilers originally designed for firing natural gas, distillate, and/or residual oil. Through the use of beneficiated coal fuel and advanced combustion technology, the program was to produce a combustion system which is reliable, simple to operate, and incorporates significant reductions in NO{sub x}, SO{sub x}, and particulate emissions over a base coal case. (VC)
Date: April 1, 1989
Creator: LaFlesh, R.C.; Rini, M.J. & McGowan, J.G.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit. Task 3, Demonstration scale testing at 50 {times} 10{sup 6} BTU/HR: Final report

Description: The objective of this program is to develop an advanced coal- combustion system capable of being retrofitted to industrial boilers originally designed for firing natural gas, distillate, and/or residual oil. Through the use of beneficiated coal fuel and advanced combustion technology, the program was to produce a combustion system which is reliable, simple to operate, and incorporates significant reductions in NO{sub x}, SO{sub x}, and particulate emissions over a base coal case. (VC)
Date: April 1, 1989
Creator: LaFlesh, R. C.; Rini, M. J. & McGowan, J. G.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit. Task 1, Cold flow burner development: Final report

Description: The overall objective of this program is to develop a high efficiency advanced coal combustor (HEACC) for coal-based fuels capable of being retrofitted to industrial boilers originally designed for firing natural gas, distillate, and/or residual oil. The HEACC system is to be capable of firing microfine coal water fuel (MCWF), MCWF with alkali sorbent (for SO{sub 2} reduction), and dry microfine coal. Design priorities for the system are that it be simple to operate and will offer significant reductions in NO{sub x}, SO{sub x}, and particulate emissions as compared with current coal fired combustor technology. The specific objective of this report is to document the work carried out under Task 1.0 of this contract, ``Cold Flow Burner Development``. As are detailed in the report, key elements of this work included primary air swirler development, burner register geometry design, cold flow burner model testing, and development of burner scale up criteria.
Date: October 1, 1989
Creator: LaFlesh, R. C.; Rini, M. J. & McGowan, J. G.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit

Description: The objective of the program was to develop an advanced coal combustion system for firing beneficiated coal fuels (BCFs) capable of being retrofitted to industrial boilers originally designed for firing natural gas. The High Efficiency Advanced Coal Combustor system is capable of firing microfine coal-water fuel (MCWF), MCWF with alkali sorbent (for SO{sub 2} reduction), and dry microfine coal. Design priorities for the system were that it be simple to operate and offer significant reductions in NO{sub x}, SO{sub x}, and particulate emissions as compared with current coal-fired combustor technology. (VC)
Date: April 1, 1990
Creator: LaFlesh, R.C.; Rini, M.J.; McGowan, J.G.; Beer, J.M. & Toqan, M.A.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit. Summary report

Description: The objective of the program was to develop an advanced coal combustion system for firing beneficiated coal fuels (BCFs) capable of being retrofitted to industrial boilers originally designed for firing natural gas. The High Efficiency Advanced Coal Combustor system is capable of firing microfine coal-water fuel (MCWF), MCWF with alkali sorbent (for SO{sub 2} reduction), and dry microfine coal. Design priorities for the system were that it be simple to operate and offer significant reductions in NO{sub x}, SO{sub x}, and particulate emissions as compared with current coal-fired combustor technology. (VC)
Date: April 1, 1990
Creator: LaFlesh, R. C.; Rini, M. J.; McGowan, J. G.; Beer, J. M. & Toqan, M. A.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit. Quarterly report, November 1986--January 1987

Description: During the quarter from October 1986 to January 1987 the following technical progress was made: (1) Initiated a literature study focusing on optimized burner aerodynamics and design methodologies for high efficiency swirl generation devices, (2) Completed design of Swirler Test Facility (STF) to be used for comparative swirler evaluations, and (3) Initiated facility preparation at MIT for thermal atomization studies and high shear viscosity measurements.
Date: May 6, 1987
Creator: Rini, M. J.; LaFlesh, R. C.; Beer, J. M.; Togan, M. A.; Yu, T. U. & McGowan, J. G.
Partner: UNT Libraries Government Documents Department

Development of an advanced high efficiency coal combustor for boiler retrofit

Description: During the quarter from October 1986 to January 1987 the following technical progress was made: (1) Initiated a literature study focusing on optimized burner aerodynamics and design methodologies for high efficiency swirl generation devices, (2) Completed design of Swirler Test Facility (STF) to be used for comparative swirler evaluations, and (3) Initiated facility preparation at MIT for thermal atomization studies and high shear viscosity measurements.
Date: May 6, 1987
Creator: Rini, M.J.; LaFlesh, R.C. (Combustion Engineering, Inc., Windsor, CT (United States)); Beer, J.M.; Togan, M.A.; Yu, T.U. (Massachusetts Inst. of Tech., Cambridge, MA (United States)) & McGowan, J.G. (Univ. of Massachusetts, MA (United States))
Partner: UNT Libraries Government Documents Department