||Lime/limestone scrubbing for SO2 and particulate removal in a marble bed scrubber /
Gogineni, M. R. ;
Malki, K. ;
Borio., D. C.
||Combustion Engineering, Inc., Windsor, Conn.;National Environmental Research Center, Research Triangle Park, N.C. Control Systems Lab.
|| Control Systems Laboratory, National Environmental Research Center,
||EPA-650/2-75-052; EPA-68-02-0221; EPA-ROAP-21ACY-020
||PB 246 114
Flue gases--Desulfurization. ;
Scrubber (Chemical technology) ;
Air pollution control ;
Air pollution control equipment ;
Sulfur dioxide ;
Process charting ;
Air washers ;
Mass transfer ;
Calcium carbonate ;
Beds(Process engineering) ;
Flue gases ;
Calcium oxide ;
Spray tower scrubbers ;
Limestone scrubbing ;
Wet methods ;
Marble bed scrubbers
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||1 v. (various pagings) : ill. ; 28 cm.
The report gives results of extensive testing of a prototype marble bed scrubber system for use in power plants. Results of 16 once-through soluble system tests, using sodium carbonate scrubbing solution, showed that the scrubber is a very good liquid/gas contacting device for SO2 removal from flue gases with an overall efficiency of 90 to 95 percent. Liquid/gas ratio and scrubber liquid composition significantly affected SO2 removal; other variables had little or no effect. Results of six limestone furnace injection system tests, using boiler calcined limestone and fly ash mixture, showed that solids concentration in the spray slurry and liquid/gas ratio signficantly affected SO2 removal. Results of six limestone tail-end system tests, using commercial limestone in a dual marble bed scrubber, showed that the SO2 removal efficiencies of the lower and upper beds are the same, based on the SO2 concentrations entering the respective beds. It was demonstrated that scale-free operation of both the furnace injection and the tail-end systems can be achieved in a closed loop system, without employing liquid blowdown, by maintaining 8 to 10 percent solids in the spray slurry.
Project Officer: Julian W. Jones. Contract No. 68-02-0221 (Task 5), ROAP No. 21ACY-020, Program Element No. 1AB013. "June 1975." "EPA-650/2-75-052." PB 246 114--National Technical Information Service.