Urea granulation tower bottom belt

Dear poster, the function of this belt at the bottom of the tower is to transport the finished urea to the packaging or storage location. The length of the belt depends on the distance to that location. Regarding cost reduction and waste minimization, what measures has your factory taken? As for using belts with a large inclination angle, it is not necessarily a way to reduce costs; it is considered that ordinary flat belts are easier to manage. As we all know, the angle of repose for urea is 32 degrees, and when the belt angle is larger, guard-edged bucket belts must be used. Such belts are prone to damage and difficult to repair or reattach; they can only be used when it is necessary to lift the material to a higher position. Is there a bucket conveyor belt at the bottom of your tower?

I agree with the opinion from the second floor. Our factory uses ordinary belts to transport finished urea to the packaging area, while bucket elevators are used for transporting urea in granular form; the lifespan of bucket elevators is shorter than that of ordinary belts.

Our project has just started and is still in the exploration phase. The main issue is that we don’t want to have a large distance between the base of the tower and the packaging building; therefore, it’s necessary to meet the height requirements of that building. That’s why we are considering using towers with a large inclination angle, which means it’s essential to raise the material to a certain height. As for the detailed design regarding how to handle the base of the tower, those details will be discussed after the exploration phase is complete. Thank you both for your in-depth discussions!

This post was last edited by Xieshui on 2009-11-6 at 18:19. Ah, the granulation tower is located very close to the packaging building; conveyor belts or even bucket elevators can be used. However, if these systems fail, it causes significant problems and may even require the shutdown of the tower. Is there a bulk storage area? It’s likely that this area is also close by, and in that case, conveyor belts would still be needed to transfer materials from in front of the packaging building to the bulk storage area. Since the bulk storage area is too close to the packaging building, conveyor belts are again necessary to transport materials there. These issues should be addressed by the design team’s powder handling specialists who have relevant experience. Our project has just started and is still in the investigation phase. Where is the project located, in the Da Hao He Shan area?

Reply to Xishui on floor 5: To reduce costs, the option of using separate warehouses was not considered; six packaging machines were installed, with an annual production capacity of 700,000 tons； I have already discussed this matter with the specialist in powder technology at the design institute. If problems arise during future use and it becomes necessary to shut down the tower, further modifications will likely be required; the plant shouldn’t be stopped just because of such a minor issue. Of course, this is something that will be dealt with later on.

It saves on investment and land use; there are no separate storage facilities required. The belt conveyor system must be reliable, and the packaging and loading workers also need to work in three shifts a day

Our company uses flat belts; indeed, the transportation distance is long, but this distance allows the urea particles to cool down further, so that the urea entering the packaging bags is at a lower temperature and is less likely to become powdered. So a long distance isn’t necessarily a disadvantage