Upflow pipe transportation problem
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Does a riser reactor belong to dense-phase transport or dilute-phase transport? What is the typical density control for the pre-lift section?
Slurry transport, density control at 400~450
Ours is around 635; how does this density level affect fluidization?
This post was last edited by Refiner on 2017-7-3 08:27. It must be slurry transport; the density depends on the size of your installation! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! As long as the fluidization is normal and the reaction temperature is appropriate, that’s fine! ! ! ! ! ! ! ! ! ! !
How could a lift pipe be a dense-phase transport system?
The last edit to this post was made by dqkwb on 2017-7-2 at 18:53. The lift pipe is, of course, part of the pre-lift section in lean-phase transportation; its density is around 580–640
A riser reactor certainly involves dilute-phase transport; the density should be between 50 and 100
Solid phase below the nozzle, fluid phase above it
In the pre-lifting stage, it is close to dense-phase transport, but it does not reach the value of over 700. Above the nozzle, it is typical dilute-phase transport.