Re: Increasing The Conveying Capacity
Dear kchetan,
missing info:
- particle size of Poly Carbonate Powders
- particle size of Poly Carbonate Pellets
- particle density of Poly Carbonate Powders
- particle density of Poly Carbonate Pellets
BR
Teus ■
Teus
Missing Info:
Dear Sir,
Density of Polycarbonate Pellets : 670 Kg / m3
Particle Size: 2500 micron
Density of Poly Carbonate Powder: 750 Kg / m3
I am not sure about Powder Particle Size.
Please Let me Know the Step Up Piping for Increased Capacity.
Thanks & Regards,
KChetan ■
Re: Increasing The Conveying Capacity
Dear kchetan,
I understand that there are 2 installations.
System 1:
Horizontal Dist: 4" Pipe, 50m, Vertical Dist: 4" Pipe, 15m, Bends 4 Nos.
Total conveying length 65m
Blower Details:
Volume Flow: 29.3 m3/min
Pressure: 1 Bar
Capacity powder: 6 tons/hr
Capacity pellets: 7 tons/hr
System 2:
Horizontal Dist: 5" Pipe, 60m, Vertical Dist: 5" pipe, 20m, Bends 10 Nos.
Total conveying length 80m
Blower Details:
Volume Flow: 29.3 m3/min
Pressure: 1 Bar
Capacity powder: 6 tons/hr
Capacity pellets: 7 tons/hr
Conveying parameters Polycarbonate:
-pellets:
particle density 1210 kg/m3 (Wikipedia)
bulk density 670 kg/m3
particle size: 2500 micron
calculated suspension velocity approx. 7.56 m/sec
-powder:
particle density 1210 kg/m3 (Wikipedia)
bulk density 750 kg/m3
particle size: ???? micron (Guess 150 micron?)
calculated suspension velocity approx. 1.85 m/sec (150 micron size)
Can you confirm that the capacity of system1 is exactly the same as of system2.
This very unlikely, because the conveying length differs and the pipe size differs significantly.
I did some calculations based on the above data and ignoring the discrepancies and doubts of the given conveying rates and the result was giving reasonable figures.
The blower volume of 0.488 m3/sec at 1 bar, however, is small on the 5” pipeline for pellets.
Check the given capacities to continue.
Have a nice day
Teus ■
Teus
Increasing The Conveying Capacity
Dear Sir,
Actually, Only One System with Step Up Piping 4" & 5" Pipe Size with the given detailed distances & bends as in earlier post.
Currently the System having 6 TPH for Powders & 7 TPH for Pellets.
Now, I would like to Increase the Capacity of the Current system to 8 - 10 TPH for both powders & Pellets.
So modification in the step up piping (pipe sizes to be calculated with the same blower but Increased conveying capacity)
Thanks & Regards,
KChetan ■
Re: Increasing The Conveying Capacity
Dear Kchetan,
Thanx for the information.
Using your installation and performance data, I calculated the solid friction factor of the poly carbonate pellets and the poly carbonate powder.
Then I preliminary calculated a new installation with a stepped pipeline of 5”- 6”, with an extra blower of 0.222 m3/sec at 1 bar.
The outcome was as follows:
Original installation is made for the pneumatic conveying of poly carbonate pellets.
The original installation will convey the poly carbonate powder, however at higher velocities than needed.
The capacity if the modified installation 5”- 6” with 1 original blower of 0.488 m3/sec + 1 extra blower of 0.222 m3/sec is:
pellets: approx. 12 tons/hr at 0.71 m3/sec and at 1 bar
pellets: approx. 11 tons/hr at 0.71 m3/sec and at 0.85 bar
powder: approx 11 tons/hr at 0.71 m3/sec and at 1 bar
powder: approx 11.4 tons/hr at 0.488 m3/sec and at 1 bar
Filter in receiving hopper needs to be checked for higher airflow.
The calculation indicates water condensation in the pipe.
I still recommend to consult an experienced manufacturer of these installations.
have a nice day
Teus ■
Teus
Increasing the Conveying Capacity
Modification in the Existing PCS to increase the Conveying Capacity with Step Up Pipe
Dear Sir,
Here is some problem facing while calculating the Step Up piping for the Conveying of Poly Carbonate Powders & Pellets.
Current System is Working for 6 TPH for Powders & 7 TPH for Pellets
Piping Details:
Horizontal Dist: 4" Pipe, 50m, Vertical Dist: 4" Pipe, 15m, Bends 4 Nos.
Horizontal Dist: 5" Pipe, 60m, Vertical Dist: 5" pipe, 20m, Bends 10 Nos.
Blower Details:
Volume Flow: 29.3 m3/min
Pressure: 1 Bar
Modification is to be made for Conveying Poly Carbonate Pellets & Powders with a 10 - 12 TPH Conveying Capacity.
Please, Help me for step up pipe calculation to meet Conveying Capacity of 10 - 12 TPH with existing Blower & with Change in Pipe Size.
Thanks
Regards,
Kchetan ■