Non Recovery Coke
Oven
Non-recovery Coke Plants are originally referred to as Beehive Ovens, again
the coal is carbonized in large oven chambers. The carbonization process
takes place from the top by radiant heat transfer and from the bottom by
conduction of heat through the sole floor. Primary air for combustion is
introduced into the oven chamber through several ports located above the
charge level in both pusher and coke side doors of the oven. Partially
combusted gases exit the top chamber through "down comer" passages
in the oven wall and enter the sole flue, thereby heating the sole of the
oven. Combusted gases collect in a common tunnel and exit via a stack, which
creates a natural draft in the oven. Since the by-products are not
recovered, the process is called Non-Recovery coke making. In non-recovery
coke ovens, coke oven slag and other by-products are sent to the battery
where they are combusted. As the ovens operate under negative pressure and
at a temperature at which all potential pollutants break down into
combustible compounds, this technique consumes the by-products, eliminating
much of the air and water pollution.
When the waste gas exits into a waste heat recovery boiler, which converts
excess heat into steam for power generation, the process is called
Heat
Recovery Coke making.
MHL has tie up with Chinese design institute and suppliers who can in turn
execute turnkey projects for Non Recovery Coke Oven also know as Heat
Recovery Coke Oven.