Powder & Bulk Solids is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Ajax Supplies Inclined Screw Conveyor for Biomass Processor

Article-Ajax Supplies Inclined Screw Conveyor for Biomass Processor

Ajax Supplies Inclined Screw Conveyor for Biomass Processor
click here to view entire image

Solids handling specialist Ajax Equipment has supplied process development company PJH Partnership with a two-meter-long inclined screw conveyor used in the processing of biomass.

PJH Partnership specializes in the application of superheated and supercritical technology to processes involving impregnation, extraction, fractionation, and separation. The Ajax inclined stainless steel screw is being used to convey biomass immersed in an organic solvent bath to alter the surface chemistry of the biomass particles. The conveyor features an oil-heated jacket and is operated at a pressure of 10 bar. It is compliant with Pressure Equipment Directive (PED) category III and rated for ATEX Zone 1 internally and Zone 2 externally.

The screw is inclined at 30° to the horizontal. “Operating a screw inclined at greater than 20° presents a number of challenges and can significantly reduce the conveyor’s handling capability,” says Ajax technical director Eddie McGee. “When a screw is inclined material tends to fall back into the prior pitch space, dramatically increasing the cross sectional loading of the conveyor as the angle of the screw is now below the contact friction angle of the material. Inclined screws can be successfully operated through the use of specially selected flights and appropriate rotational speed to generate effective radial pressure to drive the material forward.”

For related articles, equipment reviews, and news, visit our Mechanical Conveying Equipment Zone

TAGS: News News
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.