Results 1 to 2 of 2

Thread: Review and help needed for pneumatic conveying system design

  1. Review and help needed for pneumatic conveying system design

    Hello,
    so, I am designing open system vacuum conveying system similar to as shown in attached photo.Review-of-pneumatic-conveying-system[5].jpg.
    I have following data estimated(as per logic diagram attached here. Courtsey: pneumatic conveying design guide by David mills..)Capture.PNG

    Available data
    Bulk density of :
    -Material flow rate required(Mp)=10,000kg/h
    -Conveying distance(L)=45m
    -Pipe bore(guessed)(d)=0.2032m/(8")
    -Delta P(pressure drop)=?
    -Conveying air inlet velocity=36m/s
    -Air mass flow rate(Ma)=1.32kg/s
    -Solids loading ratio=0.58
    -Air requirements= 1.617 cubic-meter/s or 3426.2 CFM.

    As shown in the image there will be two 90 degree bends. and cyclone inlet is located at 10 feet height(so vertical height of pipe around 8 feet)
    Assumption:Pressure at the inlet of the pipe(from which the material will enter) will be equal to atm. pressure
    I am also attaching an image of cyclone design parameter as shown in the book. cyclone.PNG

    I wanted to know whether the calculations are correct and how to design the cyclone from available data.
    Any help will be much appreciated.

    Thanks

  2. #2
    Teus Tuinenburg

    Professional Experience 54 Years / 9 Month Teus Tuinenburg has 54 Years and 9 Month professional experience

    Discussions 1975 Teus Tuinenburg acceded to 1975 discussions, Articles 0 Teus Tuinenburg wrote 0 articles, Publications 0 Teus Tuinenburg Tuinenburg released 0 publications

    Searching nothing specified

    Know-How Conveying (1487) Teus Tuinenburg used this tag 1487 times, Pneumatic Conveying (1276) Teus Tuinenburg used this tag 1276 times, Pneumatic (570) Teus Tuinenburg used this tag 570 times

    Dear Vishal Panchal,

    From the information in your installation description, the following remarks:

    The material and the material properties are not given.
    The material losses cannot be estimated.

    -Solids loading ratio=0.58
    The solid loading ratio can be calculated as material mass flow divided by the air mass flow.
    SLR=10000/3600/1.32=2.1

    -Delta P(pressure drop)=?
    The pressure drop (vacuum) can be calculated as:
    Vacuum = 1.13/1.617-1=0.3 bar.

    A cyclone in combination with a positive displacement vacuum pump is not a good idea.
    A cyclone does not filter all the dust, which then passes the blower, which will wear out fast.

    It is not clear, whether all the partial pressure drops are calculated.
    (air, velocity, acceleration, suspension, material/dust separator, rate control, etc.)

    Apart from designing a vacuum system, the technology is also an important issue, s.a. nozzle intakes, valves, rotary valve(-leakage), etc.

    Take care
    Teus

Similar Threads

  1. Design Review of Conical Stockpiles Comparing Mass Flow Hoppers and Vibratory Disc...
    By drottboommarcel in forum bulk solids handling - Vol. 20 (2000) No. 3
    Replies: 0
    Last Post: 17th September 2018, 12:37
  2. A Review of Low-Velocity Pneumatic Conveying Systems (J. Klintworth, R.D. Marcus)
    By drottboommarcel in forum bulk solids handling - Vol. 5 (1985) No. 4
    Replies: 0
    Last Post: 12th September 2018, 20:44
  3. A Review of the Operational System Design for Dalrymple Bay Coal Terminal (W.J. Wa...
    By drottboommarcel in forum bulk solids handling - Vol. 3 (1983) No. 4
    Replies: 0
    Last Post: 12th September 2018, 13:25
  4. HELP PVC grain pneumatic conveying system vaccum
    By mouadrabihsenhaji in forum Pneumatic Conveying
    Replies: 20
    Last Post: 10th April 2018, 16:19
  5. Help Needed for Pneumatic Conveying System
    By grundfos2004 in forum Pneumatic Conveying
    Replies: 11
    Last Post: 24th August 2017, 13:22

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO