Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Dense Phase Pneumatic Conveying system

Dense Phase Pneumatic Conveying system

Dense Phase Pneumatic Conveying system

Sub: Inclined piping in Pneumatic conveying system for lifting the material

we are facing a problem in routing the inclined piping for the dense phase pneumatic conveying system.

We are executing a dense phase pneumatic conveying system for conveying coke fines at 2 tons per hour through an ERW carbon steel pipe of 80 nominal bore (pipe thickness is 4.5 mm). The conveying working pressure of compressed air is 5 bar(g) and the conveying velocity is 5 to 10 m/s. The overall conveying distance is 356 metres (of which, horizontal distance is 340m while the vertical distance is 36 metres). Due to long distance conveying, we have introduced an additional booster air supply at 5 bar(g) pressure after 150 metres conveying distance.

The conveying material is dry calcined petroleum coke and has following properties:
 Grain size: 35% minimum +4 Tyler mesh, 15% maximum- 48 Tyler mesh
 Angle of repose: 33 to 36°
 Internal angle of friction: 34 to 37°
 Angle of (sliding) friction between petroleum coke & steel pipe: 21 to 30°
 Hardgroove index: 33 to 42 (HGI) ; Design Specific gravity: 0.7

Due to supporting constraints, we want to lay the conveying pipe along the inclined gallery portion of belt conveyor. The pipe is inclined at 12° to the horizontal face and the material is lifted up through the inclined conveying pipe.

The inclined pipe has a long radius bend (R=10d) at the entry point and a slightly inclined pipe at the termination point.

Please suggest whether the above inclined conveying pipe is acceptable for satisfactory conveying.

Thanking you for your cooperation,

With warm regards,

Mahesh Thota
Sr.Engineer (Projects) for Mukand Limited

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close