I would appreciate some advice from experts: how should I choose between gas transport and vapor transport for high-pressure low-density polyethylene and Eva products?
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I need guidance on how to choose between dilute-phase conveying and dense-phase conveying What is the difference between the investment cost and the operating cost?
You can take a look at information on pneumatic conveying. Both of these delivery methods are in use. The main difference is the way in which the material moves.
The pellet conveying system uses air as the conveying gas to transport pellets, and there are two methods of pellet conveyance: dense-phase conveyance and dilute-phase conveyance. Lean-phase transport refers to the condition in which solid particles are suspended in a fluid as the velocity of the fluid increases, and they are carried away together with the fluid; this phase of gas transport is known as lean-phase transport. The conveying pressure for dilute-phase transport is generally 0.01–0.2 MPa. The terminal velocity can reach 20-30 m/s, with a solid-gas density of generally 5-10 kg/m3. Slurry transport refers to the process of conveying solid particulate materials using air flow, with the particle flow in the pipeline being at a state close to critical fluidization. The solid-gas ratio in dense-phase transport is relatively high, at 25–30 kg/m3; compared to dilute-phase transport, it enables a greater capacity to transport materials with the same airflow volume. The terminal velocity in dense-phase transport is 8–10 m/s, resulting in less wear on the pipes, and the transport pressure is generally 0.35 MPa.