Re: Conveying Fly Ash From Large To Smaller Bulker
Dear Kumar Nathan,
Seems you have an ordinary bulk trailer.
Although, what is meant with Air inlet is 80 mm.
Is this the pipe size between the compressor and the tank?
The discharge hose of 6 m is normal.
A lift of 2 meters is hardly “up hill”
What is the question?
Success
Teus ■
Teus
Dear Sir,
Originally Posted by Teus Tuinenburg
Seems you have an ordinary bulk trailer.
Although, what is meant with Air inlet is 80 mm.
Is this the pipe size between the compressor and the tank?
The discharge hose of 6 m is normal.
A lift of 2 meters is hardly “up hill”
What is the question?
Success
Teus
Thanks a heap for your response.
This is an ordinary bulk trailer.
Yes the pipe size between the compressor and tank is 80 / 3" and the hose used to convey the material ie. fly ash is 125 mm / 5"
The compressor selected is a tri lobe blower having a capacity of 600 Cubic Meters per hour at 1.9 bar absolute pressure.
The question is that whether the blower capacity is adequate to unload the material ?
If so what would be the rate of flow (TPH) ?
Thanks and Best Regards
Kumar ■
Re: Conveying Fly Ash From Large To Smaller Bulker
Originally Posted by Teus TuinenburgSeems you have an ordinary bulk trailer.
Although, what is meant with Air inlet is 80 mm.
Is this the pipe size between the compressor and the tank?
The discharge hose of 6 m is normal.
A lift of 2 meters is hardly “up hill”
What is the question?
Success
Teus
Dear Sir,
Many thanks for your prompt response.
These are ordinary bulk trailers. The large bulk trailer cannot negotiate the gradient as the plant is at a high altitude. Hence we require to transfer the fly ash from the large bulk trailer to two small ones.
The air connection pipe between the compressor and the bulk truck is 3" NB. The size of the material hose is 5" NB.
We have selected a tri lobe roots blower having a capacity of 600 cubic meters per hour at 1.9 bar absolute pressure.
Both the delivery truck and the receiving truck will be parked on the same elevation. So the vertical height from the discharge point to the fill point would approximately be 2 meters.
The total length of the material conveying hose is 6 meters.
I would like to know whether the capacity of the blower selected would be adequate to perform this transfer.
If so then what will be the rate of transfer(TPH)?
Thanks and Regards
Kumar ■
Happy Days.
Teus has rightly asked "What is the question?"
Are you sure about the 80mm air line: it seems extraordinarily larger than the 40mm I was used to?
For myself, it seems that you are unloading a 'tub' in different bins or unloading a single bin intermittently as it empties. Even so there is nothing novel about those scenarios. It happens all the time with far more dangerous products than fly ash. If you have to disconnect the hose to move the tub to a different bin connection you cannot clear the hose and great care is required when stowing a loaded hose. I've done this with bitumen at 160oC and always hated the operation. All tanker drivers hate such an operation. Closing the outlet valve is obvious but there are always snags. A hot product is downright dangerous to reconnect and a dry product can block if the rain gets in the hose...which it often does because the inlet section must point to the sky to stop spillage. Am I on the right track? ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Re: Conveying Fly Ash From Large To Smaller Bulker
Dear Kumar Nathan,
I understand that you plan to transfer fly ash from a big bulk truck into 2 smaller bulk trucks by blowing from the big bulk truck directly into the smaller bulk truck.
The used convey air (600 m3/hr # 10 m3/min) is vented through a manhole from the small bulk truck into the atmosphere, without being filtered.
This operation will generate an unacceptable amount of fugitive dust.
The operation requires a receiving hopper with filter, which is equipped with a loading bellow underneath, to load the smaller bulk truck.
Then the elevation will be approx. 9m instead of 2m.
The calculated capacity is then approx. 55 tons/hr at 0.9 barg and
50 tons/hr at 0.75 barg.
The filter size is approx. 20 m2
Fly ash particle size 100 microns.
conveying velocities:
air: 8 to 16 m/sec
fly ash: 5.2 to 8.7 m/sec
Calculated at sea level.
If the installation is operating at an altitude, then the calculation has to be executed again.
Success ■
Teus
Bulk Material Handling And Pneumatic Handling Solution
Dear Sir,
Greetings from Scorpio Engineering, Bangalore!!
We have involved in Bulk material handling turnkey solution from concept to commissioning in Power, Steel, Cement, Mining Plants, Fly Ash handling, Grain handling, Belt Conveying, Pipe Conveying, Stacker & Reclaimer, Wagon unloading / loading, Port Bulk Handling, Cement Distribution system, Pneumatic Loading / Unloading, Dry Bulk Logistic, Development of bulk Terminal, Ship / Berg unloading & loading and retro fitting of handling facilities at Port and River terminals.
We shall be thankful if you kind enough to send your inquiry to us related to Bulk Material Handling and Pneumatic handling solution. Looking for your positive response.
Regards
Debasish Dutta
+91-8697702084
GM-Marketing & Application
Scorpio Engineering (P) Ltd
E-mail : dutta.bulkhandling@gmail.com ■
Re: Conveying Fly Ash From Large To Smaller Bulker
Originally Posted by Teus TuinenburgI understand that you plan to transfer fly ash from a big bulk truck into 2 smaller bulk trucks by blowing from the big bulk truck directly into the smaller bulk truck.
The used convey air (600 m3/hr # 10 m3/min) is vented through a manhole from the small bulk truck into the atmosphere, without being filtered.
This operation will generate an unacceptable amount of fugitive dust.
The operation requires a receiving hopper with filter, which is equipped with a loading bellow underneath, to load the smaller bulk truck.
Then the elevation will be approx. 9m instead of 2m.
The calculated capacity is then approx. 55 tons/hr at 0.9 barg and
50 tons/hr at 0.75 barg.
The filter size is approx. 20 m2
Fly ash particle size 100 microns.
conveying velocities:
air: 8 to 16 m/sec
fly ash: 5.2 to 8.7 m/sec
Calculated at sea level.
If the installation is operating at an altitude, then the calculation has to be executed again.
Success
Thanks Teus !!
Will be commissioning the system next week and will revert on its performance.
As regards venting, the vent air is allowed to pass through a water tank so the dust settles in the tank. I know that this is a very crude method. But the customer does not want to expend on the receiving hopper and dust collecting system.
Best Regards
Kumar ■
Conveying Fly Ash from Large to Smaller Bulker
I would like a solution to the following.
I am required to unload fly ash from large bulker to smaller bulker for up hill transportation.
I have considered the following.
Bulker outlet = 125 mm
Air inlet 80 mm
Blower Capacity = 600 Cubic Meters per hour @ 1.9 bar A
Length of discharge hose is 6 meters
Lift would be 2 meters approximately.
BR ■