OPTIMIZED FUEL INJECTOR DESIGN FOR MAXIMUM IN-FURNACE NOx REDUCTION AND MINIMUM UNBURNED CARBON

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Reaction Engineering International (REI) has established a project team of experts to develop a technology for combustion systems which will minimize NO x emissions and minimize carbon in the fly ash. This much need technology will allow users to meet environmental compliance and produce a saleable by-product. This study is concerned with the NO x control technology of choice for pulverized coal fired boilers, �in-furnace NO x control,� which includes: staged low-NO x burners, reburning, selective non-catalytic reduction (SNCR) and hybrid approaches (e.g., reburning with SNCR). The program has two primary objectives: 1) To improve the performance of �in-furnace� NO ... continued below

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SAROFIM, A.F.; LISAUSKAS, BROWN UNIVERSITY. R.A.; D.B. RILEY, INC.; EDDINGS, E.G.; BROUWER, J.; KLEWICKI, J.P. et al. January 1, 1998.

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Description

Reaction Engineering International (REI) has established a project team of experts to develop a technology for combustion systems which will minimize NO x emissions and minimize carbon in the fly ash. This much need technology will allow users to meet environmental compliance and produce a saleable by-product. This study is concerned with the NO x control technology of choice for pulverized coal fired boilers, �in-furnace NO x control,� which includes: staged low-NO x burners, reburning, selective non-catalytic reduction (SNCR) and hybrid approaches (e.g., reburning with SNCR). The program has two primary objectives: 1) To improve the performance of �in-furnace� NO x control processes. 2) To devise new, or improve existing, approaches for maximum �in-furnace� NO x control and minimum unburned carbon. The program involves: 1) fundamental studies at laboratory- and bench-scale to define NO reduction mechanisms in flames and reburning jets; 2) laboratory experiments and computer modeling to improve our two-phase mixing predictive capability; 3) evaluation of commercial low-NO x burner fuel injectors to develop improved designs, and 4) demonstration of coal injectors for reburning and low-NO x burners at commercial scale. The specific objectives of the two-phase program are to: 1 Conduct research to better understand the interaction of heterogeneous chemistry and two phase mixing on NO reduction processes in pulverized coal combustion. 2 Improve our ability to predict combusting coal jets by verifying two phase mixing models under conditions that simulate the near field of low-NO x burners. 3 Determine the limits on NO control by in-furnace NO x control technologies as a function of furnace design and coal type. 5 Develop and demonstrate improved coal injector designs for commercial low-NO x burners and coal reburning systems. 6 Modify the char burnout model in REI�s coal combustion code to take account of recently obtained fundamental data on char reactivity during the late stages of burnout. This will improve our ability to predict carbon burnout with low-NO x firing systems.

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  • Other: DE00007176
  • Report No.: DE-AC22-95PC95103--12
  • Grant Number: AC22-95PC95103
  • DOI: 10.2172/7176 | External Link
  • Office of Scientific & Technical Information Report Number: 7176
  • Archival Resource Key: ark:/67531/metadc707517

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  • January 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 30, 2016, 2:57 p.m.

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SAROFIM, A.F.; LISAUSKAS, BROWN UNIVERSITY. R.A.; D.B. RILEY, INC.; EDDINGS, E.G.; BROUWER, J.; KLEWICKI, J.P. et al. OPTIMIZED FUEL INJECTOR DESIGN FOR MAXIMUM IN-FURNACE NOx REDUCTION AND MINIMUM UNBURNED CARBON, report, January 1, 1998; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc707517/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.