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Hello all
We are having a batch reactor and is agitating a fine powder for better fluidisation.
We are expeiencing improper mixing in such a situtaion and I am looking for a hollow shaft agitator whcih will have holes in it and the mxing air can be passed through this and this will give us a better mixing.
This aeration is an important step and need to be done effectively.
Can some one give some good suppliers for this type of hollow shaft agitator.
The reactor operates close to -2" WC vacuum.
Dave
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Hollow Shaft Agitator
Started by Guest_dave_*, May 31 2005 02:58 AM
2 replies to this topic
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#2
Guest_Guest_sgkim_*
Guest_Guest_sgkim_*
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Posted 31 May 2005 - 04:10 AM
If the reactor has lab-scale size, then visit the vendor sites such as Autoclave Engineers, Parr, etc. Long ago I used autoclaves for gas-liquid reactions; gas could be supplied thru the hole of the reactor shaft. ~sgkim
#3
Art Montemayor
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Posted 31 May 2005 - 12:46 PM
This is a major and important change in any stirred reactor. One of the main consequences resulting from such a change means that the shaft will have to be much bigger in diameter. What this impacts on is the upper shaft seal (I'm assuming here that you have a vertical, top-mounted agitator). You will have to do an ASME "R" stamp revision on your reactor - assuming you are in the USA and that your reactor was fabricated under ASME Section VIII. This is not going to be "cheap".
Depending on the shaft design, you may also require a bottom bearing for shaft stability. This will also cost. This kind of process modification and change is better done at the pilot plant or bench scale level. By the time you get to the production unit, these questions and "improvements" should have already been worked out and resolved - otherwise, as stated above, you'll be facing major downtime and costs for the modification.
Philadelphia Mixers is an expert supplier of this type of hardware and design.
Hope this experience helps.
Art Montemayor
Depending on the shaft design, you may also require a bottom bearing for shaft stability. This will also cost. This kind of process modification and change is better done at the pilot plant or bench scale level. By the time you get to the production unit, these questions and "improvements" should have already been worked out and resolved - otherwise, as stated above, you'll be facing major downtime and costs for the modification.
Philadelphia Mixers is an expert supplier of this type of hardware and design.
Hope this experience helps.
Art Montemayor
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