Hello Amit,

Please send me your article at rahul.jha@gmail.com

Originally Posted by Amrit Agarwal

My article "Theory and Design of Dilute Phase Pneumatic Conveying Systems" was published this month in Powder Handling and Processing magazine. This article gives an easy to use Excel-based calculation method for designing new dilute phase pneumatic conveying systems or for improving the performance of existing conveying systems.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting Services

Email: polypcc@aol.com

Ph and Fax: 304 346 5125

■

Hello Amit,

Please send me your article at rahul.jha@gmail.com

Originally Posted by Amrit Agarwal

My article "Theory and Design of Dilute Phase Pneumatic Conveying Systems" was published this month in Powder Handling and Processing magazine. This article gives an easy to use Excel-based calculation method for designing new dilute phase pneumatic conveying systems or for improving the performance of existing conveying systems.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting Services

Email: polypcc@aol.com

Ph and Fax: 304 346 5125

■

Dear Mr. Amrit Agrawal,

Kindly send me the article on calldown11@gmail.com

I have already sent you an email regarding it. ■

Dear Mr. Amrit Agrawal,

Kindly send me the article on calldown11@gmail.com

I have already sent you an email regarding it. ■

Dear mr. Amit agarwal,

i will request to kindly send your excel sheet for deisgn of pneumatic conveying system, i

will be grateful if you can send on pramod86@sify.com,

it will be helpful for me, as i am a little novice at this front.

Awaiting your sheet

regards

pramod kumar jha

design an dproject co-ordination head.

Envior international corporation,

138, sector-4, vaishalli,

ghaziabad. Up, india ■

Dear mr. Amit agarwal,

i will request to kindly send your excel sheet for deisgn of pneumatic conveying system, i

will be grateful if you can send on pramod86@sify.com,

it will be helpful for me, as i am a little novice at this front.

Awaiting your sheet

regards

pramod kumar jha

design an dproject co-ordination head.

Envior international corporation,

138, sector-4, vaishalli,

ghaziabad. Up, india ■

Mr. Agarwal,

Could you send me a copy of you dilute phase pneumatic conveying article?

I will use this article for my personal use.

I will repost on the article in 3 days after recieving.

Thank you very much,

Dan Merritt

danm@redriv.com

Production Engineer

Red River Commodities ■

Mr. Agarwal,

Could you send me a copy of you dilute phase pneumatic conveying article?

I will use this article for my personal use.

I will repost on the article in 3 days after recieving.

Thank you very much,

Dan Merritt

danm@redriv.com

Production Engineer

Red River Commodities ■

Dear Amrit,

I would to like to have the article on "THeory and Design of Dilute Phase Pnemuatic Conveying SYstems" as well as the excel spreadsheet that is developed by you.

I can be reached via chansiakchung@gmail.com or chansc@tpc.com.sg

Would be very grateful if you can send me the said article and excel spreadsheet.

Looking forward your favorable reply

ChanSC

Singapore ■

Dear Amrit,

I would to like to have the article on "THeory and Design of Dilute Phase Pnemuatic Conveying SYstems" as well as the excel spreadsheet that is developed by you.

I can be reached via chansiakchung@gmail.com or chansc@tpc.com.sg

Would be very grateful if you can send me the said article and excel spreadsheet.

Looking forward your favorable reply

ChanSC

Singapore ■

Dear Mr. Amrit T. Agarwal,

I will very grateful if you can send me your spreadsheet and article of design calculation for pneumatic conveying.

I am learning how to sizing a blower and piping for a pressure conveying from supersack to silos for PET resin.

It would help out a lot for my project. thank you!

Best Regards,

Trevor Shih ■

Dear Mr. Amrit T. Agarwal,

I will very grateful if you can send me your spreadsheet and article of design calculation for pneumatic conveying.

I am learning how to sizing a blower and piping for a pressure conveying from supersack to silos for PET resin.

It would help out a lot for my project. thank you!

Best Regards,

Trevor Shih ■

Originally Posted by trevorshih

Dear Mr. Amrit T. Agarwal,

I will very grateful if you can send me your spreadsheet and article of design calculation for pneumatic conveying.

I am learning how to sizing a blower and piping for a pressure conveying from supersack to silos for PET resin.

It would help out a lot for my project. thank you!

Best Regards,

Trevor Shih

Dear Mr. Amrit Agarwal,

Thanks for your kindly and send this article to me.

I’m reading it now and I’ll let you know how it help me. thank you again.

Best Regards,

Trevor Shih ■

Originally Posted by trevorshih

Dear Mr. Amrit T. Agarwal,

I will very grateful if you can send me your spreadsheet and article of design calculation for pneumatic conveying.

I am learning how to sizing a blower and piping for a pressure conveying from supersack to silos for PET resin.

It would help out a lot for my project. thank you!

Best Regards,

Trevor Shih

Dear Mr. Amrit Agarwal,

Thanks for your kindly and send this article to me.

I’m reading it now and I’ll let you know how it help me. thank you again.

Best Regards,

Trevor Shih ■

Dear Mr. Amrit T. Agarwal,

I would be very grateful if you could send me your article of design calculation for pneumatic conveying and your spreadsheet.

I am designing a pressure conveying system for PVC powder.

Thank you so much.

Best Regards,

Andreu Gubert ■

Dear Mr. Amrit T. Agarwal,

I would be very grateful if you could send me your article of design calculation for pneumatic conveying and your spreadsheet.

I am designing a pressure conveying system for PVC powder.

Thank you so much.

Best Regards,

Andreu Gubert ■

Dear Amrit,

Would it be possible for receive the excel spread sheet to calculate the flow for a pneumatic conveying project that i have?

Thank you,

Dana Carrara ■

Dear Amrit,

Would it be possible for receive the excel spread sheet to calculate the flow for a pneumatic conveying project that i have?

Thank you,

Dana Carrara ■

Amrit

Thank you for your wonderful offer of a copy of your work, i appreciate it greatly. How would it be possible to obtain a copy of your excel spread sheet?

Thank you

Dana Carrara ■

Amrit

Thank you for your wonderful offer of a copy of your work, i appreciate it greatly. How would it be possible to obtain a copy of your excel spread sheet?

Thank you

Dana Carrara ■

Dear Dniel Kustn,

The information, which you supply in this thread is not complete.

Particle size, conveying length and compressor pressure are missing.

Based on the given data:

Pipe size DN80 = inner diameter of 78 mm.

Pipe cross section area= 0.007464 m2

Compressor – 10 m3/min = 0.1667 m3/sec

Hence, the end air velocity = 0.1667/0.007464 = 21 m/sec

The chosen air end velocity has to correlate with the particle suspension velocity, for which we need to know at least the particle size and particle density.

3000 kg/sec of dextrose is approx. 4 m3/sec at an assumed bulk density of 750 kg/m3

This results in a dextrose velocity in a un-diluted phase, of:

vdextrose = 4/0.007464 = 535 m/sec

It is obvious that 3000 kg/sec = 180 tons/hr cannot be conveyed through a DN80 pipeline.

Supply us with more information about the installation.

vacuum- or pressure conveying

feeding device

pipe routing, bends

compressor type

particle size

particle density

bulk density

altitude above sea level

atmospheric conditions.

Have a nice day

Teus ■

Dear Dniel Kustn,

The information, which you supply in this thread is not complete.

Particle size, conveying length and compressor pressure are missing.

Based on the given data:

Pipe size DN80 = inner diameter of 78 mm.

Pipe cross section area= 0.007464 m2

Compressor – 10 m3/min = 0.1667 m3/sec

Hence, the end air velocity = 0.1667/0.007464 = 21 m/sec

The chosen air end velocity has to correlate with the particle suspension velocity, for which we need to know at least the particle size and particle density.

3000 kg/sec of dextrose is approx. 4 m3/sec at an assumed bulk density of 750 kg/m3

This results in a dextrose velocity in a un-diluted phase, of:

vdextrose = 4/0.007464 = 535 m/sec

It is obvious that 3000 kg/sec = 180 tons/hr cannot be conveyed through a DN80 pipeline.

Supply us with more information about the installation.

vacuum- or pressure conveying

feeding device

pipe routing, bends

compressor type

particle size

particle density

bulk density

altitude above sea level

atmospheric conditions.

Have a nice day

Teus ■

Dear Dniel Kustn,

I modeled the installation and ran a preliminary computer calculation.

compressor------------capacity-----pressure-------velocity

0.1667 m3/sec-------11.9 tons/hr-----1 bar-----18.6 to 44.6 m3/sec

0.15 m3/sec---------11.6 tons/hr-----1 bar-----16.7 to 41.0 m3/sec

0.125 m3/sec--------11.1 tons/hr-----1 bar-----13.9 to 35.3 m/sec

0,100 m3/sec--------10,5 tons/hr-----1 bar-----11.0 to 29.1 m/sec

The 3000 kg-sec # 180 tons/hr, as you required in your thread, cannot be achieved.

It is obvious that the feeding screw (~1m long, 10 cm wide) cannot deliver the 180 tons/hr either.

Probably, the required capacity is around 3 tons/hr.

compressor--------capacity-----pressure---------velocity

0.1667 m3/sec-----3 tons/hr-----0.271 bar-----31.4 to 38.4 m3/sec

0.15 m3/sec-------3 tons/hr-----0.239 bar-----28.9 to 34.6 m3/sec

0.125 m3/sec------3 tons/hr-----0.194 bar-----24.8 to 29.0 m/sec

0,100 m3/sec------3 tons/hr-----0.157 bar-----20.3 to 23.3 m/sec

Dilute phase conveying.

Attention:

The screw feeder should always be filled with material and designed for sealing the conveying pressure from the feeding bin. (no blow back from the pneumatic conveying system to the feeder bin)

Be advised that it is always better to consult an installation manufacturer or consultant with special experience in the field of application.

Take care

Teus ■

Dear Dniel Kustn,

I modeled the installation and ran a preliminary computer calculation.

compressor------------capacity-----pressure-------velocity

0.1667 m3/sec-------11.9 tons/hr-----1 bar-----18.6 to 44.6 m3/sec

0.15 m3/sec---------11.6 tons/hr-----1 bar-----16.7 to 41.0 m3/sec

0.125 m3/sec--------11.1 tons/hr-----1 bar-----13.9 to 35.3 m/sec

0,100 m3/sec--------10,5 tons/hr-----1 bar-----11.0 to 29.1 m/sec

The 3000 kg-sec # 180 tons/hr, as you required in your thread, cannot be achieved.

It is obvious that the feeding screw (~1m long, 10 cm wide) cannot deliver the 180 tons/hr either.

Probably, the required capacity is around 3 tons/hr.

compressor--------capacity-----pressure---------velocity

0.1667 m3/sec-----3 tons/hr-----0.271 bar-----31.4 to 38.4 m3/sec

0.15 m3/sec-------3 tons/hr-----0.239 bar-----28.9 to 34.6 m3/sec

0.125 m3/sec------3 tons/hr-----0.194 bar-----24.8 to 29.0 m/sec

0,100 m3/sec------3 tons/hr-----0.157 bar-----20.3 to 23.3 m/sec

Dilute phase conveying.

Attention:

The screw feeder should always be filled with material and designed for sealing the conveying pressure from the feeding bin. (no blow back from the pneumatic conveying system to the feeder bin)

Be advised that it is always better to consult an installation manufacturer or consultant with special experience in the field of application.

Take care

Teus ■

Hi Amit,

I am working on a Project that involves improving the capacity of a Dense Phase conveyor.

Could you please mail me a copy of a manual or Technical brochure on improving the capacity and the article about System Design

Calculations for Pneumatic Conveying?

It would be very helpful.

Thanks & Regards,

Gomathi

+91-8050365964

goms1suba@gmail.com ■

Hi Amit,

I am working on a Project that involves improving the capacity of a Dense Phase conveyor.

Could you please mail me a copy of a manual or Technical brochure on improving the capacity and the article about System Design

Calculations for Pneumatic Conveying?

It would be very helpful.

Thanks & Regards,

Gomathi

+91-8050365964

goms1suba@gmail.com ■

Learn Phase Pressure Conveying Systems (also known as Dilute Phase) generally use positive displacement (Roots type) blowers providing air at up to 1 Bar g to convey materials through a pipeline to the destination where the air and product are separated by a filter or other system.

The product must enter the convey line, which is at a higher pressure, via a special feeding device, usually a rotary valve airlock, or a venturi. The product is frequently suspended in the airflow, moving at relatively high velocities depending on the particle sizes and densities.

Systems generally operate on a continuous basis - product is constantly supplied at the starting point, and arriving at the destination without interruption. This allows this type of system to be easily adapted for dosing and continuous weighing applications. ■

Learn Phase Pressure Conveying Systems (also known as Dilute Phase) generally use positive displacement (Roots type) blowers providing air at up to 1 Bar g to convey materials through a pipeline to the destination where the air and product are separated by a filter or other system.

The product must enter the convey line, which is at a higher pressure, via a special feeding device, usually a rotary valve airlock, or a venturi. The product is frequently suspended in the airflow, moving at relatively high velocities depending on the particle sizes and densities.

Systems generally operate on a continuous basis - product is constantly supplied at the starting point, and arriving at the destination without interruption. This allows this type of system to be easily adapted for dosing and continuous weighing applications. ■

Dear Dniel Kustn,

Posted in a thread on the 13th of October 2009:

Rizk equation:

SLR = 1/(10^(1.44*d+1.96) * {Vs/sqrt(gD)}^(1.1*d+2.5)

Here, a direct relationship is assumed between SLR and Vs.

Example for cement:

SLR = solid loading ratio = 50

d = particle size in mm = 0.05 mm

g = 9.81 m/sec2

D = pipe diameter in m = 0.25 m

Vs = calculated minimum conveying velocity in m/sec

If SLR=0 then Vs=0

If SLR=0.5 then Vs=7.5

If SLR=1 then Vs=10

If SLR=5 then Vs=18.5

If SLR=10 then Vs=25

If SLR=20 then Vs=31.5

If SLR=30 then Vs=37

If SLR=40 then Vs=41.5

If SLR=50 then Vs=45.2

In pneumatic cement, it is well-known that a conveying air velocity at atmospheric conditions of approx. 11 m/sec is more than sufficient.

In addition, this equation has the problem that the three variables (SLR, D and Vs) are all three unknown and that the start of the design is depending on an arbitrary choice of values of two of the variables and the calculate the third variable.

It seems that this formula is a difficult one to use.

Matsumoto equation:

SLR=1.11*(particle/gas )^0.55*(Frsusp./10)^(-2.3)*(Frsalt.)/10)^3

in which:

Frsusp=velsusp/√(g*d)

Frsalt.=velsalt/√(g*d)

I could not figure out how to use this equation.

Cheers

Teus ■

Dear Dniel Kustn,

Posted in a thread on the 13th of October 2009:

Rizk equation:

SLR = 1/(10^(1.44*d+1.96) * {Vs/sqrt(gD)}^(1.1*d+2.5)

Here, a direct relationship is assumed between SLR and Vs.

Example for cement:

SLR = solid loading ratio = 50

d = particle size in mm = 0.05 mm

g = 9.81 m/sec2

D = pipe diameter in m = 0.25 m

Vs = calculated minimum conveying velocity in m/sec

If SLR=0 then Vs=0

If SLR=0.5 then Vs=7.5

If SLR=1 then Vs=10

If SLR=5 then Vs=18.5

If SLR=10 then Vs=25

If SLR=20 then Vs=31.5

If SLR=30 then Vs=37

If SLR=40 then Vs=41.5

If SLR=50 then Vs=45.2

In pneumatic cement, it is well-known that a conveying air velocity at atmospheric conditions of approx. 11 m/sec is more than sufficient.

In addition, this equation has the problem that the three variables (SLR, D and Vs) are all three unknown and that the start of the design is depending on an arbitrary choice of values of two of the variables and the calculate the third variable.

It seems that this formula is a difficult one to use.

Matsumoto equation:

SLR=1.11*(particle/gas )^0.55*(Frsusp./10)^(-2.3)*(Frsalt.)/10)^3

in which:

Frsusp=velsusp/√(g*d)

Frsalt.=velsalt/√(g*d)

I could not figure out how to use this equation.

Cheers

Teus ■