The E91™ Plant Oil Extraction Compressor

The First UL Certified Plant Oil Extraction Compressor System on the Market

Corken has been the leading manufacturer of industrial pump and gas compression solutions for the LPG, petrochemical, chemical, and gas processing industries since 1924.

One of Corken’s most innovative vapor recovery compressor is the E91 triple-packed compressor for plant oil extraction.

Plant compounds/substances have provided nutritional and medicinal benefits since the beginning of time.  As scientists learned more about the healing properties of various plant materials, they began using plant oil extraction to separate the desired components on a large scale. More recently, CBD is a growing opportunity for plant oil extraction.  Desirable compounds such as cannabidiol (CBD), tetrahydrocannabinol (THC), and terpenes are separated from the rest of the plant using hydrocarbon extraction. Other forms of extraction include ethanol and carbon dioxide (CO2); however, hydrocarbon is a more widely used since it’s more efficient and cost effective.

RESOURCES
E-91 Compressor Render v.6.72 Explore the key features

Regulatory Compliance is Critical.

Given the various indoor manufacturing environments involved in plant oil extraction, it is more critical than ever to ensure the equipment used has been fully UL Certified for Indoor Use.   The Corken E91 compressor is the first UL Certified compressor system for the plant oil extraction industry.  Additionally, Corken is certified to European Union ATEX Directive, European Union Machinery Directive, ISO 9001 Standard on Quality Management Systems, and ISO 14001 Standard on Environmental Management Systems.

Specifications
Materials
  • Head and cylinder: Ductile iron
  • Crosshead guide, crankcase, flywheel and bearing carrier: Gray iron
  • Valve seat and bumper: stainless steel or ductile iron
  • Valve plate: PEEK or stainless steel
  • Valve spring: Stainless steel
  • Pistons: Ductile iron, gray iron, stainless steel
  • Piston rings: PTFE (glass and moly filled)V-ring packing: PTFE (glass and moly filled)Packing cartridge: Ductile iron
  • Crankshaft: Ductile iron
  • Connecting rod: Ductile iron
  • Connecting rod bearing: Bimetal Babbitt
  • Wrist pin: Steel
  • Wrist pin bushing: Bronze
  • Main bearing: Tapered roller
  • O-rings: Buna-N, Neoprene® (Registered trademark of the DuPont)
Features

  • FASTER VAPOR RECOVERY – Reduces cycle times for additional product yield

  • FOOD GRADE MATERIAL USED – Viton®, PTFE, and nickel coated components

  • SELFLUBRICATING – Triple PTFE seals provide leak protection and extended life.

  • QUIET OPERATION – Ideal for indoor use (~85 dba at 3 ft. range)

  • OIL-FREE GAS COMPRESSION – No oil contamination risk in the process gas stream

  • ADJUSTABLE PACKING SCREW – Extends useful life of the packings to minimize downtime

  • SELF-CONTAINED No air compressor or pneumatic driver required.

  • REGULATORY APPROVED – Setting the industry safety standard for the plant oil extraction industry

  • SAFETY SWITCHES – Power, pressure and temperature safety switches are available (UL/CSA approved)

  • Optional purge kit is also available per 07-01-06 U.S. Environmental
    Protection Agency Regulations 40 CFR CHSection 264.1053

Applications

  • The Corken E91 is the first UL certified reciprocating gas compressor system engineered to define the rigorous safety and performance standards of indoor use within the plant oil extraction industry.

Performance Data

Don’t be fooled by “Motor-Only” certification!

The Corken E91 is the first UL certified reciprocating gas compressor system engineered to define the rigorous safety and performance standards of indoor use within the plant oil extraction industry, while others tout certification of just the motor.

  • Triple packing provides the safest and most reliable gas containment for indoor or outdoor use.
  • UL 1861 Full Compressor System Certified