Red hot coke(approx.1000℃)discharged from the coke oven is cooled below 200℃ for transfer to the next process.
For coke cooling process, wet system (CWQ:Coke Wet Quenching) or dry system(CDQ: Coke Dry Quenching) is applied.
CWQ is the system to cool red hot coke by water spraying directly and it has the following environmental and energy saving problems.
- Large volume steam including dust is generated and emitted to the atmosphere.
- Dirty water treatment after coke cooling is necessary.
- Sensible heat of red hot coke is not utilized.
CSQ is (Coke Stabilization Quenching) was developed in Europe to solved the dust problem of wet quenching. But sensible heat of red hot coke is diffused into the atmosphere.
CDQ is the system to cool red hot coke by heat-exchange with circulating inert gas in the closed process. And CDQ has features as follow.
- Air pollution caused by dust is prevented.
- Sensible heat of red hot coke is recovered as steam or electric energy.
- The quality(strength) of coke is improved by gradual coke cooling process therefore the productivity and the weak coking coal ratio of coke oven can be increased.
- Fuel coke ratio of Blast Furnace can be reduced because of little moisture coke.
Features of SPCO-CDQ
- SPCO-CDQ can be applied to any coke ovens with layout and dimension restriction.
- We have wide technical knowledge and experience, and have various patens and know-how.
