Re: Pressure Drop Calculation For Plastic Pellet Dilute Phase C…
If your supplier can show you some reference plants of a similar material and application, you should be able to trust his recommendation.
I would expect your calculation is 10% higher than the supplier's calculation as the methodology in the approach you used can give a conservative number, which is good for the novice designer. ■
Pneumatic Conveying Calculations, Pick-Up Velocity
If you are uncertain about what should be the pick-up velocity for your material you can easily calculate it using Rizk or Matsumoto saltation velocity co-relations and adding to it about 20% safety factor. As you will find from these co-relations this velocity is also a function of solids to gas ratio and the pipe diameter, increasing as these variables increase.
I will be glad to send a PDF copy of these co-relations if you need them.
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Calculating Velocity
Thank you very much. Please send me the file.
Hensen.Tieu@ingeniapolymers.com ■
Re: Pneumatic Conveying Calculations, Pick-Up Velocity
Originally posted by Amrit Agarwal
If you are uncertain about what should be the pick-up velocity for your material you can easily calculate it using Rizk or Matsumoto saltation velocity co-relations and adding to it about 20% safety factor. As you will find from these co-relations this velocity is also a function of solids to gas ratio and the pipe diameter, increasing as these variables increase.
I will be glad to send a PDF copy of these co-relations if you need them.
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Email: polypcc@aol.com
Ph and Fax: 304 346 5125
KA MR AMIT AGARWAL
SIR
plz let me know the reason of pressure drop in conveying line for fly ash pneumatic system ■
Pressure Drop
can any body tell me inspite of sufficient air though line blockage is there in densephase conveying system ■
Dear Mr Amrit Agarwal
Can you send me a copy of co-relations Rizk or Matsumoto for calculate saltation velocity please.
joseviloria22@hotmail.com
joseviloria22@gmail.com ■
Re: Pressure Drop Calculation For Plastic Pellet Dilute Phase C…
Rahul,
The reasons could be agglomeration of particles or sticking to the pipe. This happens if the particles have tar substances (ex: coal).
Regards ■
Dear Mr Amrit Agarwal
Can you send me a copy of co-relations Rizk or Matsumoto for calculate saltation velocity please.
sj@chinabulk.com ■
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Re: Pressure Drop Calculation For Plastic Pellet Dilute Phase C…
Dear Mr. Amrit Argawal,
Can I have a copy of co-relations Rizk or Matsumoto for calculate saltation velocity please.
thanks
liewd@conwag.com ■
Re: Pressure Drop Calculation For Plastic Pellet Dilute Phase C…
Go with our supplier's calculations. Supplier's calcs will have about a 10% safety factor included, thus the 10% difference.
Many of the Zeppelin pneumatic transport systems have been pushed beyond design transport rates and due to the quality of equipment, have held up and increased load rates in rail car filling systems. They also have their own designed fill spouts that direct the material to the ends of the railcar and thus invert the angle of repose and acheive less empty space and higher capacities.
Does this calculation take into account interior pipe wall surfaces to minimize production or streamers during transport?
Also there is a transport rate range for pneumatic transport of plastic pellets to be aware of.
Are you cleaning the pellets prior to railcar loading?
Please read through the attached brochure.
Attachments
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Re: Pressure Drop Calculation For Plastic Pellet Dilute Phase C…
Dear Mr. Amrit Agarwal,
Could you also email me a copy of Rizk or Matsumoto saltation velocity co-relation please.
email: leebrian@streamyx.com ■
Pressure Drop Calculation for Plastic Pellet Dilute Phase Conveying
I used Dr. A.T Agarwal's method to size a pneumatic conveying pressure system to convey 15000 lbs/hr of plastic pellets to railcars. The calculation comes within 10% of the calculation done by my supplier. The only uncertainty I have when doing calculation is the pickup velocity for the material. ■