Propylene and nitrogen recovery system for industrial applications

Enhance your production efficiency by recovering high-value gases like propylene and nitrogen with a system designed to maximize recovery rates and ensure product purity, minimizing waste and achieving sustainable operations.

The BORSIG Propylene and Nitrogen Recovery Unit is a sophisticated solution designed for petrochemical producers and industrial gas processors seeking efficient separation and purification processes. Utilizing a strategic combination of compression, condensation, and membrane separation, this unit excels in recovering propylene and high-purity nitrogen from process streams. Applications range across polypropylene production, gas processing, and chemical manufacturing, delivering end-products like polypropylene resin and liquid nitrogen.

This unit operates continuously and is engineered for high reliability and quick installation. Its modular package unit design allows easy integration into existing facilities, supporting retrofit deployments. By using hydrocarbon-selective membranes alongside optional hydrogen-selective stages, you benefit from recovery rates exceeding 95% for propylene and nitrogen purity over 99 mol%. The system reduces energy consumption and minimizes emissions, aligning with environmental and economic objectives.

Available in various materials to resist corrosion, BORSIG’s Recovery Unit ensures compatibility with demanding industrial conditions. It is supported by comprehensive membrane services and complies with industry standards, offering an innovative edge in energy and environmental solutions within the chemical and energy sectors.

Benefits

  • Achieves over 95% recovery rates, maximizing valuable resource utilization.
  • Reduces operational costs with low-maintenance, reliable design.
  • Integrates seamlessly into existing systems for cost-effective retrofitting.
  • Enhances product quality with high-purity nitrogen and propylene output.
  • Minimizes emission-related environmental impact, aligning with sustainability goals.
Applications
Chemical processing,Chemical manufacturing,Plastic production,Oil and gas,Petrochemicals,Energy sector,Industrial emissions,Polypropylene production,Gas processing,Environmental solutions
End products
Recycled propylene,Fuel gas,Liquid nitrogen,Polypropylene resin,Hydrocarbon mixtures,Monomers,Ethylene glycol,Organic solvents,Seal gases,Captured carbon,Ethylene oxide,High-purity nitrogen gas
Steps before
Purge gas compression,Condensation,Cooling agent application,Degassing,Condensate separation
Steps after
Nitrogen purification,Propylene permeate recycling,Hydrogen-selective membrane installation,Flare disposal of lighter components
Input ingredients
purge gas stream,cooling agent,liquid propylene,inert gases,propylene,condensate,permeate stream
Output ingredients
propylene-rich permeate stream,purified nitrogen stream,recovered propylene,propylene in liquid state,propylene in gaseous state,lighter components to flare
Recovery rate
> 95% propylene
Purity
> 99 mol% nitrogen
Pressure difference
Resulting pressure difference across membrane
Membrane type
Hydrocarbon and hydrogen selective
Condensation method
Cooling with cooling agent or liquid propylene
Dryer system required
For some PP production licenses
Package unit design
Quick installation and easy implementation
Working mechanism
Hydrocarbon-selective membrane
Integrated steps
Compression,condensation,membrane separation
Batch vs. inline flow
Continuous inline
Purification stages
Hydrogen-selective membrane stage
Pressure differential
Via compressor's suction side
Recovery rates
> 95% propylene
Purity
> 99 mol% nitrogen
Energy efficiency
Low maintenance,high reliability
System integration flexibility
Easy add-on for existing and new systems
Automation level
Tailor-made design
Adaptability
Retrofit design
Density/particle size
0.5–2.5 g/cm³ / 50–1000 µm
Machine footprint
Compact design for easy integration
Shape and size
Tailor-made design for existing and new installations
Feed method
Compressed and condensed purge gas stream
Discharge method
Purge gas fed into membrane system
Customization options
Adaptation to existing plants (retrofit design) feasible
Tailor-made design
Yes
Retrofit design
Adaptation to existing plants
Package unit design
Quick installation and easy implementation
Membrane System Integration
Hydrocarbon,hydrogen-selective stages
Market info
BORSIG is known for its expertise in manufacturing high-quality industrial engineered-to-order (ETO) equipment, including pressure vessels, heat exchangers, and compressors, with a strong reputation for engineering excellence and reliability in the petrochemical and chemical industries.