On the selection of low-pressure coal slurry pumps
Thread Content
I would like to ask everyone about the advantages and disadvantages of various types of low-pressure coal slurry pumps!
Ask a few manufacturers; there are only a few types: reciprocating, centrifugal, and screw
I asked a few companies, and they only talked about the advantages of their own products; what I want to know is how they perform in actual use
Our unit has directly chosen Shanghai Foster’s centrifugal pumps; they have been in use for over a year now. With 6 pumps in total, the seal rings have had to be replaced 3 times in that period, and the frequency of maintenance is even lower than that of high-pressure slurry pumps. It’s very durable, the price is low, and it’s easy and quick to repair.
It depends on the properties of the coal slurry; if its viscosity is too high, it becomes more difficult to use centrifugal pumps. For specific details, you can request a performance sheet and conduct targeted research
Can the viscosity of water-coal slurry gasification exceed 1200? Is it even more effective at higher viscosities? It’s likely that the high-pressure coal slurry pumps and burners will not be able to function in such conditions. Hehe
Low-pressure centrifugal slurry pumps are not designed to handle coal slurries with high viscosity
I wonder what type of low-pressure coal slurry pump your company is using? Our company uses centrifugal separation; the coal slurry concentration is 62%, and its viscosity is less than 1200 cp
So, may I ask what the purchase price is at your company? We’ve contacted them before and found the price to be on the high side
The viscosity of the water coal slurry used in the gasification of certain lignite can reach 2000–6000; at such viscosities, it is likely that centrifugal pumps will not be sufficient