Specialty chemicals company Evonik is supporting the reduction of carbon dioxide (CO2) emissions with its PuraMem VOC membrane separation technology for flare gas recovery.

Due to various economical or technical challenges, part of the associated gas that is produced during oil production is flared. The often-heavy hydrocarbon rich emissions cannot be used at the well head, resulting in global oil production sites burning approximately 140bn cubic metres of natural gas annually. 

According to the Global Gas Flaring Reduction Partnership, this causes more than 300m tonnes of CO2 to be emitted to the atmosphere. 

To generate a clean gas stream that be used to generate power without flaring, Evonik’s membrane separation technology separates heavy hydrocarbons as natural gas liquids (NGL), water and hydrogen sulphide. Liquefied petroleum gas (LPG) can then be produced from the recovered NGL. 

Evonik VOC Membrane

Evonik VOC Membrane

Source: Evonik

Commenting on the use of the company’s membrane technology, Dr. Iordanis Savvopoulos, Head of the Fibres, Foams and Membranes Product Lines, Evonik, said, “Our innovative membrane technology enables today’s energy industry to increase efficiency and reduce emissions at many single processing points.” 

“The sum of the applications results in attractive sustainability benefits for the industry.” 

The PuraMem VOC features a spiral-wound membrane based on a high-performance polymer and features a design suitable for retrofitting. 

A flexible adapter system allows for the PuraMem VOC to act as a drop-in replacement to existing system installations.