Work Plan for Continuation of the Project ''Reduction of Atmospheric Polution by the Application of Fluidized-Bed Combustion.''

Abstract

U.S. A t o m i c Energy C s m m i s s i o n a n d t h e ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY OFFICE DIQSSLON OF CONTROL S Y S T E M S ARGONNE NATIONAL LABORATORY DISCLAIMERThis report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. W o r k p e r f o r m e d under an a g r e e m e n t b e t w e e n t h e DISCLAIMER L i t e r a t u r e Review2 . T e c h n i c a l E v a l u a t i o n of C a n d i d a t e P r o c e s s e s . . . . . . . . . .. 3P r e s s u r e E f f e c t s i n R e g e n e r a t i o n 4 . E x p e r i m e n t a l P r o g r a m . . . . . . . . . . . . . .iii ABSTRACTAdditional work is planned on the antipollution aspects of fuel combustion in fluidized beds to which limestone is added. The major emphasis of the next phase of work will be on combustion at pressures up to 10 atm and regeneration of the sulfated lime under pressure. Fluidized-bed combustors will be operated in the one-and two-stage modes to investigate effects on NOx and sulfur emissions. The program will include laboratory-and bench-scale work aimed at elucidating mechanisms important to sulfur oxide and nitrogen oxide control.

Formation and emission of nitric oxide in fluidized bed combustion

“…It is often held that, because of their low operating temperatures, fluidized beds would produce little nitric oxide (5,6,12,13). But some previous studies (7, [14][15][16][17][18][19][20] have suggested that local temperatures may be much higher than the average bed temperature, and that nitric oxide may be produced from fuel-bound nitrogen as well as from atmospheric nitrogen. Jonke et al (17)(18)(19) we studied the combustion of propane-air mixtures.…”

“…But some previous studies (7, [14][15][16][17][18][19][20] have suggested that local temperatures may be much higher than the average bed temperature, and that nitric oxide may be produced from fuel-bound nitrogen as well as from atmospheric nitrogen. Jonke et al (17)(18)(19) we studied the combustion of propane-air mixtures. Nitric oxide emission was studied first as the bed parameters were varied.…”