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 Sir,

Could you please mail us the excel sheet to mailid kvs@essar.com

Thanks & regards, ■

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 Sir,

Could you please mail us the excel sheet to mailid kvs@essar.com

Thanks & regards, ■

Could you please forward that article to my e-mail?

ingenieria@oga.com.co ■

Could you please forward that article to my e-mail?

ingenieria@oga.com.co ■

Dear Mr. Agarwal

could you please send me your article along with the xl calculations sheet as it will definetly helps in my upcoming project.

thank you

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. Agarwal

could you please send me your article along with the xl calculations sheet as it will definetly helps in my upcoming project.

thank you

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

■

hi every body,

i want to determine pressure drop in pneumatic conveyor for transport cement material with this specification:

Solids Conveying Rate (W): 120 ton/h

Pipeline characteristic: 42 m Vertical with 365 mm diameter and 9 m Horizontal with 350 mm diameter

Gas Temperature (T): 80 C

Gas velocity at inlet of conveying system (Vg): 16 m/s

Pipe line Roughness Factor: 0.0005

maximum gauge pressure of conveyer: 0.45 bar

altitude above sea level (m): 1581 m

but i dont have K (Solids Friction Factor) for cement.

please help me to solve this problem.

thanks a lot

My email address:

mehshakery@yahoo.com ■

hi every body,

i want to determine pressure drop in pneumatic conveyor for transport cement material with this specification:

Solids Conveying Rate (W): 120 ton/h

Pipeline characteristic: 42 m Vertical with 365 mm diameter and 9 m Horizontal with 350 mm diameter

Gas Temperature (T): 80 C

Gas velocity at inlet of conveying system (Vg): 16 m/s

Pipe line Roughness Factor: 0.0005

maximum gauge pressure of conveyer: 0.45 bar

altitude above sea level (m): 1581 m

but i dont have K (Solids Friction Factor) for cement.

please help me to solve this problem.

thanks a lot

My email address:

mehshakery@yahoo.com ■

Can it be conveyed in dense phase in a conventional way? ■

Can it be conveyed in dense phase in a conventional way? ■

Dear Moosadarya,

Calcium Carbonate can be conveyed pneumatically.

Whether it will be in dense phase or dilute phase depends on the definition of the two conveying regimes.Search this forum for this subject.

best regards

Teus ■

Dear Moosadarya,

Calcium Carbonate can be conveyed pneumatically.

Whether it will be in dense phase or dilute phase depends on the definition of the two conveying regimes.Search this forum for this subject.

best regards

Teus ■

Dear Mr Amrit,

Can i have a copy of your calculation sheet in excel send to my email, cdseng@gmail.com? I am currently working on the design of a pneumatic conveyor (vacuum blower type) for potassium permanganate in flake form with a bulk density of 1600 kg/m3.

Jeff Ng

Technical Manager,

CDS Engineering Sdn Bhd ■

Dear Mr Amrit,

Can i have a copy of your calculation sheet in excel send to my email, cdseng@gmail.com? I am currently working on the design of a pneumatic conveyor (vacuum blower type) for potassium permanganate in flake form with a bulk density of 1600 kg/m3.

Jeff Ng

Technical Manager,

CDS Engineering Sdn Bhd ■

Dear Amrit

Can you send me a copy of this article?

My e-mail is martincharles@tatachemicals.com

Best regards ■

Dear Amrit

Can you send me a copy of this article?

My e-mail is martincharles@tatachemicals.com

Best regards ■

Dear Amrit,

Thank you for sending be your article "Theroy and Design of Dilute Phase Pneumatic Conveying Systems". It is very well written and I would definately recommend it to anyone involved in designing these types of systems.

I was also wondering if you would have any information on the design of Dense Phase systems.

Thanks,

Scott ■

Dear Amrit,

Thank you for sending be your article "Theroy and Design of Dilute Phase Pneumatic Conveying Systems". It is very well written and I would definately recommend it to anyone involved in designing these types of systems.

I was also wondering if you would have any information on the design of Dense Phase systems.

Thanks,

Scott ■

Dear Amrit,

many thanks for thread. Your thread is far more visited here in this section of the Forum.

Article I found is very useful. ■

Dear Amrit,

many thanks for thread. Your thread is far more visited here in this section of the Forum.

Article I found is very useful. ■

Dear Mr. Amrit Agarwal,

Thank you very much for sending the article: "Theory and Design of Dilute Phase

Pneumatic Conveying Systems".

It was what I need to understand basics of design and an excellent tool to perform the calculations at my own.

Thank you very much for your time.

Sincerely,

Kendea Vasilis ■

Dear Mr. Amrit Agarwal,

Thank you very much for sending the article: "Theory and Design of Dilute Phase

Pneumatic Conveying Systems".

It was what I need to understand basics of design and an excellent tool to perform the calculations at my own.

Thank you very much for your time.

Sincerely,

Kendea Vasilis ■

Dear Amrit,

Thanks for send me a copy of your article. I was reading it and it's an excellent help in the design of pneumatic conveying systems, the article is easy to understand and very useful.

Cenk BÜYÜKCAN ■

Dear Amrit,

Thanks for send me a copy of your article. I was reading it and it's an excellent help in the design of pneumatic conveying systems, the article is easy to understand and very useful.

Cenk BÜYÜKCAN ■

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

Can you please email the copy for the excel calculations of the same. hifzus@gmail.com

Regards, ■

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

Can you please email the copy for the excel calculations of the same. hifzus@gmail.com

Regards, ■

Dear Amrit,

Thank you for sending me the article on "Theory and design of dilute phase pneumatic conveying systems". I found it very good & very practical for calculations. Now I have composed my own calculation sheet with some problems but I will get through.

sumant ■

Dear Amrit,

Thank you for sending me the article on "Theory and design of dilute phase pneumatic conveying systems". I found it very good & very practical for calculations. Now I have composed my own calculation sheet with some problems but I will get through.

sumant ■

Dear Mr. Amrit,

I have a problem in pneumatic conveying of cocoa beans. The details as follows

Material: cocoa beans

Blower capacity: 1700m3/h

Required output: 1500 kg/h,

Pipeline bore diamter: 4 inch (100 mm)

The problem is that, i cannot get the required output, hence if could help me in sorting this problem, I will be very thankful to you. I have already requested your article through mail. Also i like to remind you in this forum also.

Again i will be engaged in designing the pneumatic conveying system for milk powder, Hence if could sent me the article and related information, i will be grateful to you.

Thanks and regards,

Navneeth,

Process Engineer,

ISF Industries Private Limited, India

http://www.isfindustries.com/ ■

Dear Mr. Amrit,

I have a problem in pneumatic conveying of cocoa beans. The details as follows

Material: cocoa beans

Blower capacity: 1700m3/h

Required output: 1500 kg/h,

Pipeline bore diamter: 4 inch (100 mm)

The problem is that, i cannot get the required output, hence if could help me in sorting this problem, I will be very thankful to you. I have already requested your article through mail. Also i like to remind you in this forum also.

Again i will be engaged in designing the pneumatic conveying system for milk powder, Hence if could sent me the article and related information, i will be grateful to you.

Thanks and regards,

Navneeth,

Process Engineer,

ISF Industries Private Limited, India

http://www.isfindustries.com/ ■

Dear Navneeth,

A blower capacity of 1700 m3/hr # 1700/3600 = 0.472 m3/sec

A 4”pipeline has a cross sectional area of 0.010261 m2

Resulting in a gas velocity of 0.472/0.010261 = 46 m/sec.

The Solid Loading Ratio (SLR), according to your information = 1500 / (1700*1.2) = 0.735

This is a very low SLR and indicates a very inefficient system.

The pressure drop for product losses is therefore very low and almost the total pressure drop is spent on air related losses.

Cocoa beans are very vulnerable and will be damaged by this very high velocity.

Are you using a centrifugal fan or a positive displacement air pump?

Is it a vacuum- or a pressure system?

How long is the horizontal conveying length?

How long is the vertical conveying length?

How many bends?

What is the cocoa beans size?

What is the cocoa bean density?

Designing a pneumatic conveying system for milk powder should be done by experienced suppliers, because it is “food grade” and explosive.

The advice is: not to learn while building.

Best regards

Teus ■

Dear Navneeth,

A blower capacity of 1700 m3/hr # 1700/3600 = 0.472 m3/sec

A 4”pipeline has a cross sectional area of 0.010261 m2

Resulting in a gas velocity of 0.472/0.010261 = 46 m/sec.

The Solid Loading Ratio (SLR), according to your information = 1500 / (1700*1.2) = 0.735

This is a very low SLR and indicates a very inefficient system.

The pressure drop for product losses is therefore very low and almost the total pressure drop is spent on air related losses.

Cocoa beans are very vulnerable and will be damaged by this very high velocity.

Are you using a centrifugal fan or a positive displacement air pump?

Is it a vacuum- or a pressure system?

How long is the horizontal conveying length?

How long is the vertical conveying length?

How many bends?

What is the cocoa beans size?

What is the cocoa bean density?

Designing a pneumatic conveying system for milk powder should be done by experienced suppliers, because it is “food grade” and explosive.

The advice is: not to learn while building.

Best regards

Teus ■

Dear Teus,

Thank you for your advice and valuable reply.

The details as requested in the forum as follows,

Fan: Centrigual Fan

System: Pressure system

Horizontal distance: 6 m

Vertical distance: 8 m

No. of bends: 4 (long radisu bend)

Particle size: approx. 10mm x 10 mm

Particle density: 540 kg/m3

Please revert back with your valuable advice.

I also like to learn this system design as a few systems are approaching.

Thanks and regards

Navneeth ■

Dear Teus,

Thank you for your advice and valuable reply.

The details as requested in the forum as follows,

Fan: Centrigual Fan

System: Pressure system

Horizontal distance: 6 m

Vertical distance: 8 m

No. of bends: 4 (long radisu bend)

Particle size: approx. 10mm x 10 mm

Particle density: 540 kg/m3

Please revert back with your valuable advice.

I also like to learn this system design as a few systems are approaching.

Thanks and regards

Navneeth ■

Mr. Agarwal - would you please forward a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" article to my email at pommy.malik@gmail.com including the ExCel spreadsheet for calculations?

I have read a lot of appreciation for your Article.

Best regards

Malik ■

Mr. Agarwal - would you please forward a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" article to my email at pommy.malik@gmail.com including the ExCel spreadsheet for calculations?

I have read a lot of appreciation for your Article.

Best regards

Malik ■

Dear Navneeth,

Using a centrifugal fan in a pneumatic conveying system is asking for problems.

This is, because the air mass flow decreases with increasing pressure.

A blocked system is then the result.

As you have a “working” system, you can perform the following.

Obtain the fan curve from the supplier’s datasheet.

Measure the fan delivery pressure with an empty pipeline system.

Locate on the fan volume/pressure curve the airflow.

Then repeat this measurement for systematically increased feeding rates and find the point, where pneumatic conveying is stopped.

This exercise will reveal the function of your system.

Success

Teus ■

Dear Navneeth,

Using a centrifugal fan in a pneumatic conveying system is asking for problems.

This is, because the air mass flow decreases with increasing pressure.

A blocked system is then the result.

As you have a “working” system, you can perform the following.

Obtain the fan curve from the supplier’s datasheet.

Measure the fan delivery pressure with an empty pipeline system.

Locate on the fan volume/pressure curve the airflow.

Then repeat this measurement for systematically increased feeding rates and find the point, where pneumatic conveying is stopped.

This exercise will reveal the function of your system.

Success

Teus ■

Dear Navneeth,

As Teus rightly pointed using fans in pneumatic conveying system is asking for problems.

Centrifugal fans are very sensitive to any variation in pressure and the volume delivered will vary across a wide range. The Blower capacity you mentioned 1700 m3 / hr is perhaps the flow at no load condition.

If you have the blower curve find a range of minimum slope on the curve, and adjust your feed rate so that the system operates within the range.

It is necessary to have controlled and steady feeding to achieve a consistent performance from the system.

Best luck with your system.

Regards,

Vikas Gaikwad ■

Dear Navneeth,

As Teus rightly pointed using fans in pneumatic conveying system is asking for problems.

Centrifugal fans are very sensitive to any variation in pressure and the volume delivered will vary across a wide range. The Blower capacity you mentioned 1700 m3 / hr is perhaps the flow at no load condition.

If you have the blower curve find a range of minimum slope on the curve, and adjust your feed rate so that the system operates within the range.

It is necessary to have controlled and steady feeding to achieve a consistent performance from the system.

Best luck with your system.

Regards,

Vikas Gaikwad ■

Dear Teus and Vikas,

Thank you very much for your valuable advice.

I will follow the same you have advised me.

After reading the reply, i am now in to a new query,

How to select the blower system for the required process.

If not centrifugal is the correct blower to select, how to specifically select blower for the process. Also which blower type is widely used and successful for most of the applicaiton.

Please kindly advice.

Thank asnd regards

Navneeth ■

Dear Teus and Vikas,

Thank you very much for your valuable advice.

I will follow the same you have advised me.

After reading the reply, i am now in to a new query,

How to select the blower system for the required process.

If not centrifugal is the correct blower to select, how to specifically select blower for the process. Also which blower type is widely used and successful for most of the applicaiton.

Please kindly advice.

Thank asnd regards

Navneeth ■