Successfully reported this slideshow.
Extending Centrifuge Dewatering into the Dryer Realm: Washing & Drying in a Centrifuge using Hot Air/N 2  or Steam
P ressure  A dded  C entrifugation PAC ® h c F cen F P 6 bar
What is PAC? <ul><li>Pressure Added Centrifugation (PAC) . </li></ul><ul><li>A unique system that enables the Heinkel Inve...
P ressure  A dded  C entrifugation = PAC ® seal between feed pipe and rotating bowl Nitrogen with up to 6 bar rotational s...
PAC ® also Improves  Cake Consistency Before PAC – Paste Like After Pac – Solid Product <ul><li>Difficult-to-filter produc...
Product Drying  with JETSTREAM ®   <ul><li>PAC: N 2  removes liquid mechanically out of cake capillaries </li></ul><ul><li...
Wet and Sticky Products = Product Loss . Test with standard centrifugation (no PAC !!)  LOD > 55 % LOD
Surface Moisture Removed = Higher Throughput and  Profitability (minimal product loss) Test with Pressure Added Centrifuga...
Filling ` to Filtrate- receiver Suspension
Washing to Filtrate receiver Wash liquid
Spinning  –  Cake dewatering To Filtrate- receiver Filling   Washing  Spinning  Discharging
Hypercentrifugation Pressure Added Centrifugation PAC ® ≤   6 bar To  Filtrate Receiver Real Pressure Added Centrifugation...
Discharging of Filter Cake Filling   Washing Spinning  Discharging
Pressure Added Centrifugation PAC ®  — Examples ►   PAC reduces significantly the residual moisture! ►  Inverting Filter C...
Fixed Bed Drying <ul><li>Sealed Cake Design Ensures  </li></ul><ul><li>Even Flow Through Cake </li></ul><ul><li>High Heat ...
  The PAC Difference  <ul><li>API after Discharge without PAC </li></ul><ul><li>API after Discharge with 20 minutes of PAC...
 
 
 
Upcoming SlideShare
Loading in …5
×

Pac wash and dry in centrifuge

1,354 views

Published on

Wash and dry your cake in a filtering centrifuge using pressurized air, nitrogen or steam.

Published in: Business, Technology
  • Be the first to comment

  • Be the first to like this

Pac wash and dry in centrifuge

  1. 1. Extending Centrifuge Dewatering into the Dryer Realm: Washing & Drying in a Centrifuge using Hot Air/N 2 or Steam
  2. 2. P ressure A dded C entrifugation PAC ® h c F cen F P 6 bar
  3. 3. What is PAC? <ul><li>Pressure Added Centrifugation (PAC) . </li></ul><ul><li>A unique system that enables the Heinkel Inverting Filter Centrifuge to dewater and then wash and dry products in the bowl of the centrifuge by introducing high-pressure air, N2 or steam into the sealed basket where solids are collected - while still under rotation. The only exit path for the air or steam is via the cake void spaces . </li></ul>
  4. 4. P ressure A dded C entrifugation = PAC ® seal between feed pipe and rotating bowl Nitrogen with up to 6 bar rotational speed can be reduced during pressure step! F C F S F C F S F C F S  p Capillary Forces Centrifugal Forces  p  p
  5. 5. PAC ® also Improves Cake Consistency Before PAC – Paste Like After Pac – Solid Product <ul><li>Difficult-to-filter products </li></ul><ul><li>can be dewatered </li></ul><ul><li>Products will not stick to the </li></ul><ul><li>Solids Housing </li></ul><ul><li>No cannon-balling in dryers </li></ul>6 bar PAC can also improve the cake consistency, e.g. thixotropic cakes, which may stick on the Solids Housing. Pressure-Added-Centrifugation (PAC) to pre-dry the filter cake. Will avoid problems coming From discharging a “wet” cake.
  6. 6. Product Drying with JETSTREAM ® <ul><li>PAC: N 2 removes liquid mechanically out of cake capillaries </li></ul><ul><li>Jetstream: heated nitrogen removes solvent by evaporation </li></ul>PAC: 6 bar N 2 Atmospheric pressure ► PAC + Jetstream of HEINKEL enables to process and handle a wide range of very difficult and problematic products Jetstream: N 2 and temperature
  7. 7. Wet and Sticky Products = Product Loss . Test with standard centrifugation (no PAC !!) LOD > 55 % LOD
  8. 8. Surface Moisture Removed = Higher Throughput and Profitability (minimal product loss) Test with Pressure Added Centrifugation: LOD = 20%
  9. 9. Filling ` to Filtrate- receiver Suspension
  10. 10. Washing to Filtrate receiver Wash liquid
  11. 11. Spinning – Cake dewatering To Filtrate- receiver Filling Washing Spinning Discharging
  12. 12. Hypercentrifugation Pressure Added Centrifugation PAC ® ≤ 6 bar To Filtrate Receiver Real Pressure Added Centrifugation is only possible with the HEINKEL Inverting Basket! Vent of Bowl Nitrogen
  13. 13. Discharging of Filter Cake Filling Washing Spinning Discharging
  14. 14. Pressure Added Centrifugation PAC ® — Examples ► PAC reduces significantly the residual moisture! ► Inverting Filter Centrifuges is the only type which can operate with pressure centrifugation! Product name Residual moisture centrifugation Residual moisture with PAC HYPERCENTRIFUGATION ® Antiallergical Substance Alkaloid Food Additive Metal Powder Silicon Carbide Vitamine 30 % 45 % 22 % 26 % 19 % 39 % 11 % 32 % 5 % 12 % 6 % 24 %
  15. 15. Fixed Bed Drying <ul><li>Sealed Cake Design Ensures </li></ul><ul><li>Even Flow Through Cake </li></ul><ul><li>High Heat & Mass Transfers… </li></ul><ul><li>Ensures Rapid Evaporation </li></ul><ul><li>Overcomes Surface Tension & </li></ul><ul><li>Reduces Viscosity of Moisture </li></ul><ul><li>Temperatures of up to 125 °C </li></ul><ul><li>Pressures up to 6 bar g </li></ul><ul><li>LOD’s: </li></ul><ul><li>from 14% to 0.002% (in 16 minutes) water wet pharmaceutical </li></ul><ul><li>from 22% to 3% (in 5 minutes) MIBK wet polymer </li></ul><ul><li>from 11% to 0.08% (in 20 minutes) IPA wet pharmaceutical </li></ul>HF Inverting Filter Centrifuge
  16. 16. The PAC Difference <ul><li>API after Discharge without PAC </li></ul><ul><li>API after Discharge with 20 minutes of PAC at 100 deg. C </li></ul>

×