Several issues with the dry quenching unit for coke
Thread Content
My company plans to build two 170t/h dry quenching units, and the civil engineering work has already been completed. Due to stringent **environmental policies and local** requirements, we are mandated to use fully dry quenching for coke. Therefore, another set of dry quenching equipment needs to be installed, with the coke oven producing 300 t/h of coke under normal conditions. We plan to use a 170-ton dry quenching furnace and hoist; after all, the civil work is already complete, so making changes would be very troublesome. The circulating fans and boiler will be configured for a capacity of 125 t/h. Has this method been used before? Are there any specific requirements for the boiler? What are the key considerations for the overall installation during the civil works, installation, and commissioning phases? Please feel free to communicate more.
170t/h, 300t/h, 125t/h – I’m completely confused
I suggest you find a professional design firm to help you with the calculations; I don’t have any experience in this area, so I can’t offer any advice.
The question isn’t very clear. Could you be more specific? ?
In other words, there are two sets of 170 t/h dry quenching systems; if a waste heat boiler is used to handle the waste heat, its capacity should also be 170 t/h based on the amount of coke processed. The evaporation capacity at full load should be around 100 t/h. Therefore, if your waste heat boiler has a maximum evaporation capacity of 125 t/h, there should be no problem – there’s a considerable margin of excess capacity. If the coke processing capacity is 125, it is obviously impossible to ensure complete dry quenching of coke
We intend to use a dry quenching furnace with a capacity of 170 tons per hour, along with a boiler capable of handling 125 tons per hour. The boiler and the secondary dust collector will be modified to address the reduction in steam production that occurs when all three dry quenching units are operating simultaneously due to the decrease in the amount of coke being quenched. Long-term operation at low load levels can have an adverse effect on the boiler and the feedwater preheater.
I still don’t quite understand! You mean that the handling capacity of each dry quenching furnace is 170 t/h, with 3 such furnaces to be built; the boilers associated with them have a handling capacity of 125 t/h for dry quenching coke. At the same time, the secondary dust collectors and water preheaters need to be modified! As mentioned above, why is a dry quenching capacity of 170 t/h required? Why not build 3 dry quenching furnaces with a capacity of 125 t/h? Hope for an in-depth discussion! !
Initially, the project was planned in phases, with one set of dry quenching units and one set of wet quenching units per phase; the coking process is divided into two phases in total, involving the construction of 2 sets of 170t/h dry quenching units, along with 2 wet quenching units as backups. Later, when the boss had enough money, he insisted on installing 3 sets of dry quenching systems, rather than using wet quenching. Taking the civil engineering costs into account, we have already completed the foundations for two sets of 170 t/h dry quenching systems.
Since the foundation work is already complete, there’s nothing much that can be done. A 170 t/h dry quenching furnace can be used, but the gas-to-material ratio needs to be reduced in order to maintain the temperature distribution throughout the system! Should the dust collector be modified again, or will we still use the 170 model dust collector? There are some technical details to take into account! !
Our facility also needs to install a dry quenching unit
Dry quenching of coke – dry quenching is being carried out, but water is still being used after half a day