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Apura

Gas separation membrane

No chemical usage and >30% more recovery of saleable hydrocarbons

The Apura gas separation membrane is a durable, spiral-wound, multilayer composite membrane. It is ideally suited to seamlessly replace traditional cellulose acetate (CA) spiral-wound elements for acid gas removal to meet pipeline transmission specifications.

Apura membranes are designed for use in high-pressure, medium- to low-CO₂ applications for bulk and fine removal of contaminants such as water, CO₂, and H₂S.

The smaller ecological footprint—reduced power consumption and zero chemical requirements—provides substantial savings on total cost of ownership and releases fewer emissions compared with amine systems.

Advantages

Increases recovery of saleable hydrocarbons by 30% or more compared with traditional CA spiral-wound membranes
Extends membrane life up to 40% in water-rich conditions
Enables simple plug-and-play replacement of CA spiral-wound membranes
Releases fewer emissions than amine systems
Eliminates chemical requirements
Reduces power requirements

Advanced multicomposite spiral-wound module.

How it works

Feed gas enters from the side of the spiral-wound Apura membrane, enabling smaller molecules, such as CO₂ and H₂S, to pass through the multiple layers in a crossflow manner. They then enter the central perforated tube at lower pressure. The high-pressure nonpermeate gasstream, rich in hydrocarbons and depleted of CO₂, flows to the next section of membrane modules to repeat this process until the necessary product gas specifications are met.

The low-pressure CO₂-rich permeate stream is collected in the central perforated tube and routed to the desired location as a wastestream.

Apura membranes are available in 8-in and 8.25-in diameters.

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Premium

Tech Paper Predictive Monitoring of Acid Gas Membrane Performance

Reduce gas processing shutdowns with intelligent monitoring that enables proactive acid gas membrane replacement.

Case Study Colorado Midstream Company Uses Apura Membranes to Meet CO2 Requirements

Gas separation membranes treat 8 MMcf/d of gas and lower CO2 concentration from 3% to 2.3%.

Product Sheet Apura Gas-Separation Membrane

Apura membranes are proven to recover more hydrocarbons than traditional cellulose acetate membranes.