Filtering Area
Dear Mr. Mohamedgomaa,
For the air flow of 7.000 m3/h which means in round about 116,7 m3/min, you will need a filter with a filtering area of about 36 m2.
It gives a specific load of about 3,25 m3/m2/min, which is normal for this application.
The pressure loss expected on filter, considering a standard filtering media with a specific weight of about 450 gr/m2, should be of about 80-100 mmWc = 800 - 1.000 Pa.
Taking into consideration the high vacuum of the system, please be careful for the filter construction. You will need a reinforced construction.
Also, the filter tangential inlet should be positioned on the lower part, on a conical receiver reinforced for high abrasion.
Some other details to be considered, as for the volume capacity of the lower air-lock and for the construction of it: it has to be in a construction form able to work with the high vacuum.
If it will be as drop-through valve, then the air flow lost on it should be added both to the blower and to the air flow load on filtering area.
For a 600 mm diameter air-lock, which in round has a volumetric capacity of 120 liters/rev., it has to have a minimum net capacity of 2,0 m3/min.
For filling degree of 65 % and product bulk density of 77 kg/hl and a revolution speed of 30 rev/min, you can achieve about 108 tons/h.
The air flow loss on such a valve will be of about 15 Nm3/min (depends on construction) and this air flow should be extracted from the air flow of aspiration blower while adding it at the filter air flow load.
Wish you all a nice springtime.
Sincerely yours,
Tanase TANASE
www.tecnocereal.com ■
Re: Settling Champer And Bag Filter
Dear mohamedgomaa,
Attached a document describing how to calculate a mobile vacuum/pressure unit as you described it.
Attachments
■
Teus
Re: Settling Champer And Bag Filter
Originally Posted by Tanase
For the air flow of 7.000 m3/h which means in round about 116,7 m3/min, you will need a filter with a filtering area of about 36 m2.
It gives a specific load of about 3,25 m3/m2/min, which is normal for this application.
The pressure loss expected on filter, considering a standard filtering media with a specific weight of about 450 gr/m2, should be of about 80-100 mmWc = 800 - 1.000 Pa.
Taking into consideration the high vacuum of the system, please be careful for the filter construction. You will need a reinforced construction.
Also, the filter tangential inlet should be positioned on the lower part, on a conical receiver reinforced for high abrasion.
Some other details to be considered, as for the volume capacity of the lower air-lock and for the construction of it: it has to be in a construction form able to work with the high vacuum.
If it will be as drop-through valve, then the air flow lost on it should be added both to the blower and to the air flow load on filtering area.
For a 600 mm diameter air-lock, which in round has a volumetric capacity of 120 liters/rev., it has to have a minimum net capacity of 2,0 m3/min.
For filling degree of 65 % and product bulk density of 77 kg/hl and a revolution speed of 30 rev/min, you can achieve about 108 tons/h.
The air flow loss on such a valve will be of about 15 Nm3/min (depends on construction) and this air flow should be extracted from the air flow of aspiration blower while adding it at the filter air flow load.
shall i use two cyclone one act as receiving and other as filter or just one can do the two functionals.
and foe wheat i read the i had to make it antistatic, i think just earth cable is enough ■
Filtering Area
Dear Mr. Mohamedgomaa,
Here below is the answer posted by Mr. Teus. In the attachment you can see the general configuration of such a system.
For to avoid the dust particle going through blower compressor and destroy it, you can provide a round filter as top-mounted directly on the conical reduction.
It is the solution used in the vessels unloading systems.
Just take into consideration the air-leakage on the valve below the conical reduction.
Also, the filter construction should be a reinforced on.
My mentions about antistatic was for the filtering media.
The earthing of the cables and of the machines should be however provided by the electric plant supplier.
Sincerely yours,
Tanase TANASE ■
Settling champer and bag filter
Hello Everyone,
I need Some help in design a settling champers and plus jet filter for my application
Pressure/vacuum system for 100 ton/wheat flow rate is 7000 M3/hr
Thank you all ■