B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
23/374, 117/48.2
B01J 2/30 (2006.01) B09B 3/00 (2006.01) C04B 18/02 (2006.01) C04B 18/06 (2006.01) C04B 18/08 (2006.01) C09C 1/58 (2006.01) F23J 1/00 (2006.01)
Patent
CA 2039074
WDP\16046-11095.abs PELLETIZING ASH Abstract The invention includes a method for pelletizing ash from a fluidized bed combustor in which limestone particles are suspended in the presence of carbonaceous fuel being burned. Lime- containing bed ash ("FBCR") is produced in the combustor, and fly ash ("FBC fly ash") is generated as a by-product of the combustion process. The method includes the step of obtaining FBCR and FBC fly ash generated during the combustion process. Water is added to the FBCR so as to convert a substantial portion of the lime to hydrated lime. Water is added to the FBC fly ash and pellets are formed from the FBC fly ash. The FBC fly ash pellets are coated with the hydrated FBCR. The coated FBC fly ash pellets are cured in a curing silo for a minimum of 6-10 hours, preferably by nesting them in a bed of hydrated FBCR. The cured pellets then are separated from the bed of hydrated FBCR. New pellets are formed by mixing the separated, hydrated FBCR with FBC fly ash and water. The pellets formed with the separated, hydrated FBCR contain about 0-80% by weight of FBCR and about 100-20% by weight of FBC fly ash. Agglomeration of the pellets in the curing silo is prevented by coating the pellets with hydrated FBCR. Agglomeration also can be prevented by spraying newly formed pellets with certain chemicals, by drying their surfaces, or by coating the pellets with inert materials other than hydrated FBCR.
Bland Alan E.
Cox Richard K.
Lichty Ray (e.)
Rowen Allen R.
Schumann Richard A.
Bland Alan E.
Cox Richard K.
Gowling Lafleur Henderson Llp
Lichty Ray (e.)
Rowen Allen R.
LandOfFree
Pelletizing ash does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pelletizing ash, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pelletizing ash will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2018854