NNI/PSA NITROGEN GENERATORS

ParkerBalston
NNI Nitrogen Generators

RJM sales, inc.

BENEFITS:

Lower cost...eliminates the need for costly gas cylinders.
Compact - frees up valuable floor space.
Eliminates unexpected shutdowns due to a "bad" or empty cylinder.
Hassle-free, easy to install, easy to operate.
Safe and reliable.
Turn Key packages available.
(Includes: Compressor, Dryer, Nitrogen Generator, and Nitrogen Receiver.)

Here's How It Works
NNI's nitrogen generators separate nitrogen from air, utilizing pressure swing adsorption technology. Air consists of 21% Oxygen and 78% Nitrogen. The gas separation process described here preferentially adsorbs Oxygen over Nitrogen using carbon molecular sieve (CMS) enabling the Nitrogen to pass through as a product gas at pressure.

The compressor module, which can be lubricated or non-lubricated, along with its associated motor and controls, is included unless the customer has available plant air to supply the PSA system.

The refrigerated dryer module provides the air treatment for the PSA system. This module, consisting of a surge tank, refrigerated dryer and filters, ensures that the PSA adsorption towers receive only clean and dry compressed air, as required for optimum operating efficiency. Oil and water vapors are converted to liquids and aerosols across the refrigerated dryer's condenser. The liquids are mechanically separated out and the aerosols are removed by a coalescing filter.

The PSA module utilizes NNI's proprietary state-of -the-art pressure swing adsorption (PSA) technology. Two ASME coded pressure vessels are specially charged with carbon molecular sieve (CMS). A solid state programmable controller simply operates the process valves on a cyclic basis, with built-in logic for automatic stop/start. NNI production and purity remain constant, regardless of flow rate peak demands, utilizing an automatic flow control valve. A continuous monitoring oxygen analyzer, with alarms and shut-down, is standard equipment.

Mono-Bed Models
Ranging in flow rate from 200 SCFH to 1200 SCFH @ 99.5% nitrogen purity, the Mono-Bed series of nitrogen gas generator meets the requirements of a large number of industrial applications where the need for an on-site, on-demand nitrogen gas generator is established but the flow rate is moderate. Where supplied nitrogen gas is unavailable or unduly expensive due to regional pricing or delivery difficulties, the Mono-Bed PSA on-site nitrogen generator is a viable solution.

The NNI standardized series of nitrogen generators, which can be designed to include such options as booster compressors, de-oxo catalyst modules, oxygen analyzers, and/or outdoor/freeze protection packages, to meet customer requirements, has long been a preferred solution for many nitrogen gas applications.

......NNI Mono-Bed Performance SCFH of N₂at % Purity:
..Model	99.95%	99.9%	99.5%	99%	98%	97%	95%
..MB 200	98	135	200	241	311	361	433
..MB 400	200	245	400	490	630	735	880
..MB 600	269	374	600	730	940	1,090	1,310
..MB 800	361	490	800	980	1,260	1,470	1,760
..MB 1000	451	619	1,000	1,205	1,555	1,802	2,162

Dual-Bed Models
NNI has designed a series of standardized dual-bed systems with built-in features to optimize the performance of the units, while keeping capital costs to a minimum. With flow rates from 1,200 SCFH to 4,000 SCFH @ 99.5% nitrogen purity, this Dual-Bed series of models picks up where the Mono-Bed series ends.

One of the most important of the economy features of the Dual-Bed series is the standardized sizing. All of the PSA vessels utilized on this Dual Bed line are of ASME coded, in-house manufacture, allowing for the elimination of both vendor vessel manufacturing cost mark-ups and freight charges to transport the vessels from the vendor upon their completion.

While customized options such as booster compressors, de-oxo catalyst modules, high-purity oxygen analyzers and outdoor/freeze protection packages are available for these units, the basic design is a standard one, making design, manufacture and delivery as efficient and expeditious as possible, while, at the same time, containing capital expenditure.

......NNI Dual-Bed Performance SCFH of N₂ at % Purity:
..Model	99.99%	99.95%	99.9%	99.5%	99%	98%	97%	95%
..DB 5	43	118	155	250	315	400	453	563
..DB 10	86	236	310	500	630	800	906	1,126
..DB 15	130	354	465	750	945	1,200	1,358	1,689
..DB 20	173	472	620	1,000	1,260	1,600	1,810	2,250
..DB 1200	284	532	736	1,200	1,490	1,894	2,200	2,850
..DB 1600	378	714	992	1,600	2.010	2,555	2,975	3,845
..DB 1900	452	852	1,178	1,900	2,360	3,000	3,394	4,516
..DB 2500	602	1,136	1,571	2,500	3,148	4,000	4,659	6,022
..DB 4000	943	1,769	2,480	4,000	5,028	6,388	7,442	9,618

Catalyst De-Oxo Units
NNI catalyst de-oxo skids can be added to our PSA systems, reducing oxygen concentrations to 10 ppm or less and providing a nitrogen purity of 99.999%. The de-oxo utilizes a palladium catalyst bed and a small stream of hydrogen to combine with the remaining oxygen in the feed product stream to form water. The water is then separated by a Desiccant Tower Dryer to regain the 40ºF dewpoint at pressure. Residual hydrogen carryover is closely controlled to within 0.2% by the use of a PID controller. This de-oxo catalyst unit is completely automatic and alarm setpoints and shutdown capabilities are supplied as standard features.

The addition of a NNI de-oxo catalyst module allows our PSA Nitrogen Gas Generating Systems to be utilized for a number of applications in industry calling for the use of high purity nitrogen, formerly only available by means of costly supplied nitrogen.

Booster Packages
NNI Offers customized booster packages designed to specific customer requirements. Any specific product pressure requirement exceeding the standard NNI nitrogen output pressure can be met by the addition of a custom designed booster package. These booster packages provide the customer with specific additional output pressure to meet the application requirement. Depending on the specific application and optimum pressure required, NNI will source a proper nitrogen product booster compressor and integrate it to the system. Several high pressure storage facility options are also available to accumulate and hold in reserve a customer's peak nitrogen flow rate for on-demand availability. If desired or required, NNI will provide a high pressure cylinder-filling station, in conjunction with the high pressure nitrogen product booster.

Custom Designed Units
In addition to their standard equipment lines, mono-bed and dual-beds, NNI has many years of experience in the design and manufacture of custom packaged PSA nitrogen generating systems. Large flow rates, exceeding that of the largest standard dual-bed model, can be met by custom designed packages. Specific design features to accommodate hazardous environment installations, extreme weather conditions, redundancy considerations and unique application requirements are available. NNI's engineering and manufacturing staff has addressed and solved many challenging project requirements with the development of uniquely designed equipment. NNI has a dedicated knowledgeable staff ready to lend their support to identify and overcome unique project challenges. Our custom designed systems can be found worldwide, providing dependable on-site, on-demand nitrogen gas supplies to a wide variety of industries.

Call 800-752-9055 for literature and pricing or to make an appointment to have a salesman visit your site. If you prefer to ask for information via the internet use the "REQUEST INFO" button above or e-mail = sales@rjmsales.com.