Membrane separation is a technology which selectively separates (fractionates) materials via pores and/or minute gaps in the molecular arrangement of a continuous structure. Membrane separations are classified by pore size and by the separation driving force. These classifications are: Microfiltration (MF), Ultrafiltration (UF), Ion-Exchange (IE), and Reverse Osmosis (RO).
Membrane technology covers all engineering approaches for the transport of substances between two fractions with the help of permeable membranes. In general, mechanical separation processes for separating gaseous or liquid streams use membrane technology.
Gas mixtures can be effectively separated by synthetic membranes made from polymers such as polyamide or cellulose acetate, or from ceramic materials.
Membrane separation processes
Membrane separation processes have a very important role in the separation industry. Nevertheless, they were not considered technically important until the mid-1970s. Membrane separation processes differ based on separation mechanisms and size of the separated particles. The widely used membrane processes include microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrolysis, dialysis, electrodialysis, gas separation, vapor permeation, pervaporation, membrane distillation, and membrane contactors. All processes except for pervaporation involve no phase change. All processes except (electro)dialysis are pressure driven. Microfltration and ultrafiltration is widely used in food and beverage processing (beer microfiltration, apple juice ultrafiltration), biotechnological applications and pharmaceutical industry (antibiotic production, protein purification), water purification and wastewater treatment, the microelectronics industry, and others. Nanofiltration and reverse osmosis membranes are mainly used for water purification purposes. Dense membranes are utilized for gas separations (removal of CO2 from natural gas, separating N2 from air, organic vapor removal from air or a nitrogen stream) and sometimes in membrane distillation. The later process helps in the separation of azeotropic compositions reducing the costs of distillation processes.
Membrane Nitrogen Generators are the preferred choice in industries. Our Nitrogen systems incorporate Membrane Modules carefully designed to assure many years of reliable, trouble free service with Nitrogen flows of up to thousands of cubic meters per hour.
Among many benefits of Membrane Nitrogen Generators, following are the most common reasons why customers are choosing Membrane Nitrogen generators today:
Membrane Nitrogen Generators offer more than 15-years of trouble-free operation. In fact, many Membrane Nitrogen Generators are in operation for more than 15-years and are only now being considered for overhauls.
No moving parts
Nitrogen Generation through membrane separation is simply a process of passing pressurized, compressed clean air through a hollow fibre membrane which separates Nitrogen from other gases such as Oxygen, CO2 etc. Hence, there are no moving parts. No moving parts means, no maintenance!
Membrane Nitrogen generators are very reliable and robust. Nitrogen is produced simply by using compressed air and hence, there is no chance of a breakdown.
With a Membrane Nitrogen generator, you are producing gas as you are consuming it. There are no high-pressure cylinders and no cylinder handling and hence on-site Membrane Nitrogen plants are very safe to operate.
We offer these systems as a complete Turnkey supply. So if you are unable to provide compressed air, we completely design the system including air compressor, air dryer, air filters and membranes. If you require very high pressure Nitrogen for your process or for cylinder filling, we also supply Nitrogen booster compressors.
Our Membrane Nitrogen Generator systems are designed for simple and automated operation. PLC controls and HMI are standard
product offerings. Product purity is automatically monitored and controlled for ease of operation.