Hazardous Waste Disposal with Thermal Oxidation - John Zink ...
Hazardous Waste Disposal with Thermal Oxidation - John Zink ...
Hazardous Waste Disposal with Thermal Oxidation - John Zink ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
WASTE EXAMPLE PRODUCTS OF OXIDATION<br />
GAS / SOLID<br />
SOLID<br />
CO + H2/C + ASH<br />
COAL FINES<br />
FG, NOXA, PARTICULATE<br />
FG, NOXA, PARTICULATE<br />
STEAM<br />
HOPPER<br />
ESP<br />
AIR<br />
350° F<br />
FUEL<br />
CYCLONIC T.O.<br />
Configuration 7.2 : <strong>Waste</strong> Process<br />
<strong>Waste</strong>s Containing Combustible Solids<br />
Figure 8 is a diagram of a process to dispose of a waste that contains combustible solids in the<br />
particle size range of 10 to 500 microns that produces a flue gas containing excessive amounts of<br />
NOx. It consists of the following major components:<br />
• A cyclonic reduction furnace in which a high radial velocity, high temperature, reducing (less<br />
than stoichiometric air) environment converts the bound nitrogen to N 2 and the fuel to water gas.<br />
• A quench section which cools the water gas to approximately 1400° F.<br />
• A heat recovery boiler which produces steam in cooling the flue gas to 350° F.<br />
• An unlined vent stack.<br />
DRY ASH CONDITIONING<br />
TOWER<br />
HOT CYCLONE<br />
Recycle flue gas cooling is an integral part of the process to minimize NOx formation and<br />
maximize heat recovery.<br />
19<br />
BOILER<br />
Recycled Gas<br />
350° F<br />
DRY ASH<br />
DRY ASH<br />
BAG HOUSE<br />
WASTE EXAMPLE PRODUCTS OF OXIDATION<br />
GAS / SOLID<br />
SOLID<br />
HOPPER<br />
FUEL<br />
AIR<br />
Water Gas<br />
CO 2<br />
H 2<br />
CO<br />
H 2O<br />
N 2<br />
CYCLONIC REDUCTION<br />
FURNACE<br />
Figure 8 : <strong>Waste</strong> Process<br />
MELAMINE SLURRY<br />
DNT CELLULOSE<br />
QUENCH<br />
RECYCLED GAS<br />
AIR<br />
FG, NOx<br />
FG, NOx<br />
T.O<br />
OR<br />
STEAM<br />
BOILER<br />
FLUE GAS<br />
STACK<br />
FLUE GAS<br />
STACK
Change language