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Nitrogen Generator Delivery & Pricing
To request information on pricing and delivery for one of our Parker Nitrogen Generation Systems, please complete the request a quote form, and a product expert will contact you.
The air that we breathe is 78.09% N2, 20.95% Oxygen and the remainder is Argon, CO2, Water vapor and other trace gases. Separating air has been done cryogenically for over a hundred years. The cryogenic process involves fractional condensation of the gases into their separate components. Oxygen liquefies at -297F (-183C) whereas Nitrogen liquefies at -320F (-195C), so by maintaining air at -297F, all the oxygen will liquefy out of the mixture, then by holding the remaining gas at -320F, the nitrogen is separated as a liquid. The nitrogen liquid is then pumped into insulated trucks for delivery to the point of use. Needless to say, this 100+ year old technology is very energy intensive.
On-site nitrogen generation is a more modern means of separating air. There are two means of separating gases non-cryogenically. One is with hollow fiber membranes and one is with pressure swing adsorption.
Hollow fiber membranes are very interesting fibers. They are extruded through a spinneret like many fibers are, but a stream of dry nitrogen fills and creates an inner annulus to make a fiber with a center bore, much like a drinking straw, hence the name hollow fiber. The outer surface of the Parker fiber is non-porous, but extremely permeable as its thickness is less than 40 nanometers. Compressed air travels down the center bore while oxygen permeates through the permeable membrane wall at a rate about 3-4 times as fast as nitrogen, so by passing compressed air through the hollow fiber, oxygen permeates and the nitrogen does not. Thus by the time the air reaches the end of the fiber, most of the oxygen has been depleted. Bundle hundreds or thousands of fibers together and arrange them like a shell and tube heat exchanger and you can create a product that can handle thousands of cubic feet per hour.
Pressure swing adsorption (PSA) works much differently. A special material, called carbon molecular sieve (CMS), is about the size of a grain of rice. The CMS is able to hold on to (adsorb) oxygen under high pressure, then release it (desorb) under low pressure. This sieve is loaded into cylindrical towers using a process called “snow storm filling”. One tower operates to remove the oxygen under pressure, while the other tower is held at low pressure where the oxygen is released. Then, on a predetermined cycle, the towers switch so that the one that was at high pressure holding oxygen is desorbed and re-generated at low pressure while the other tower takes on the job of capturing the oxygen under pressure. This cycle progresses back and forth and is completely reversible. Systems can operate for many years without the need for a reload of sieve. Our pre-filtration system keeps the CMS beds clean so the regeneration is not contaminated.
As a leader in the industry for over 30 years, and with over 50,000 generators deployed world-wide, Parker offers both styles of generators with standard systems and custom systems to meet your pressure, flow and OEM needs.
Is a nitrogen generator rated for 99% really deliver 99% Nitrogen?
Nitrogen generators are rated at 100% minus the concentration of residual oxygen. So a generator rated at 99% is 1% oxygen. The remaining gas is a mixture of nitrogen, argon and other trace gases. In most cases, removal of oxygen is the most important contaminant. Moisture and CO2 are almost completely removed and are not included in the 99% feature. Please contact us for a specific breakdown of the remaining gases based on laboratory testing.
Why does a PSA system need a nitrogen storage vessel and why is one not supplied with our membrane based HFX series?
PSA or Pressure Swing Adsorption systems need a buffer vessel to supply nitrogen during tower switching. This maintains steady downstream pressure and flow. Membrane based systems are continuous process devices and do not need a vessel to smooth out flow.
What is included when I purchase a nitrogen generator from Parker?
Our generators are complete turnkey systems. Prefiltration is installed and included as standard. This filter is rated at 99.99% efficient down to 0.01 micron. Also included in the system is a sterile final filter. It is rated at 99.9999+% at 0.01 micron. This represents a 6 log reduction in contamination. The final filter is USDA/FSIS accepted for use in federally inspected Meat and Poultry plants and is in full compliance with FDA regulations. Download bulletin TI-105 and TI-935 for our independent test reports.
Also included in the system is a nitrogen storage vessel and a mass flow meter to accurately measure flow. Oxygen analyzers are optional on all Parker Nitrogen Generators.
How much electricity do Parker Nitrogen Generators consume?
Our membrane generator HFX series do not need electricity. Therefore, they may be used in an explosion proof environment. This is perfect for chemical blanketing and line purging applications where a continuous source of dry nitrogen is important for plant safety. If the HFX is supplied with an oxygen analyzer, the system is rated at 120 VAC, 0.25A. Our PSA systems need electricity to switch on board valves and they are rated at 120 VAC, 2A.
Can I get a factory generated test report for my records?
Yes. Each nitrogen generator is tested at the factory prior to shipping. A test report may be requested from Parker’s Technical support department at 800-434-4048.
How can I change flow or purity?
Each generator comes with a flow and purity label attached to the front of the system. The panel mounted flow control valve lets the user easily dial in the desired purity.
Will the Carbon Molecular Sieve need to be replaced regularly?
No. Parker works with the top sieve supplier to assure optimum quality and utilizes state of the art prefiltration to protect the system. With proper inlet air quality and system maintenance, the sieve should last the life of the system.
Whom do I contact to help size up a system?
Parker has local, factory trained, sales specialists who can come to your location and consult with you on the most appropriate nitrogen generator for your needs. You may email us or contact our customer service team at 800-343-4048 to get the name of our local representative.
Learn more about Parker Nitrogen Generators by downloading brochures, white papers and application notes from our Resources section.