Friday, October 2, 2015

Nitrogen Generator System Lowers Cost for Auto Metalcaster

The benefits of using Nitrogen generation technology are plentiful, and span across many different applications and industries. The automotive manufacturing industry is no exception. One particular automotive manufacturer recently found out just how beneficial Nitrogen delivery systems can be.

Tuesday, June 23, 2015

Nitrogen Generators for Sweep Gas

South-Tek Systems Nitrogen Gas Generators are used to provide a steady, on-demand supply of Nitrogen as the sweep gas for degasification of water. Nitrogen Generators provide a cost effective, safe and convenient source of nitrogen, with a relatively fast return on investment.

Monday, March 16, 2015

Nitrogen Generators - Payback (ROI) Calculation

 ROI with Nitrogen Generation vs Bulk Liquid Nitrogen
Uncover Cost savings and production growth

What is a Nitrogen Generator? Nitrogen Generators mechanically separate Nitrogen (N2) from compressed air and feed it to a N2 receiver tank for continuous use in a wide range of industrial processes.  Two technologies can be used to accomplish this, membrane and PSA. Membrane N2 Generators are widely used for lower purity and lower flow applications (up to 99+%), however the separation membranes degrade over time requiring replacement, overall limiting the lifespan of the generator.  That lifespan typically ranges between 8-13 years depending upon operating environments and if scheduled maintenance has been completed. PSA N2 Generators can produce N2 at purities from 95-99.999+%, and can remain in service for 20+ years without changing the separation material. Therefore, they are truly the "work horses" of the industrial world when it comes to generating Nitrogen on demand.  

Why Switch Your Nitrogen Gas Source?  Businesses and facilities currently using bulk gas or liquid nitrogen in any of Nitrogen's many useful applications are oftentimes contractually tied to a gas company for their source of N2.  This means that there is a dependence on others to fulfill the critical supply of Nitrogen.  Due to scheduling, delivery, and variances in N2 demands, the process of securing Nitrogen results in many inefficiencies.  The unending monthly gas bills, overage and surplus fees, gas taxes, tank leasing fees, contract management costs, and long term contracts all result in the continual cost of Nitrogen significantly adding up over time.  Therefore, why not eliminate all these problems by generating your own Nitrogen and substantially reducing your overall operating expenses?

How Can a Nitrogen Generator Produce Valuable ROI? By purchasing a South-Tek Nitrogen Gas Generator, you can make your own Nitrogen gas at your facility and put an end to the gas contracts.  Benefits of this investment include: eliminating routine costs and inefficiencies outlined above, producing only the N2 gas you need, when you need it, and at the purity, flow rate and pressure you require.  By working with a nitrogen generator manufacturer, such as South-Tek Systems, you can pinpoint your exact flow and purity requirements in order to size the appropriate system for your application. For further peace of mind, each South-Tek Nitrogen Generator is provided with a Performance Verification Certificate that ensures the equipment meets or exceeds the specification your process demands.

Sample ROI Nitrogen Generator Purchase
Nitrogen Payback Calculation

Input/Useage Data:
Bulk Liquid Nitrogen Usage:
  • Average monthly N2 use: 29,200 CCF
  • Average montly LN2 Cost: $14,260
  • Bulk LN2 Cost per CCF: $0.48 per CCF)
  • N2 Generator Equipment Cost: $170,872
  • Average monthly cost to generate N2: $4,093
  • N2 GEN Cost per CCF:  $0.14 per CCF
  • $KWH: $0.09
Capital Expense Payback Period: 16.8 Months
5 yr Cumulative Savings: $439,128
Cost Per CCF reduced by 71%

Tuesday, October 14, 2014

Wet-Layup Protection with Nitrogen Blanketing

Wet-Layup Protection with Nitrogen Blanketing is necessary and proven method to help protect and avoid corrosion of your boiler circuit with the South-Tek Systems N2-GEN LPS Series Nitrogen Generator Series.

No more need to use tube trailers, costly demurrage charge, cylinder maintenance and storage.   Make the Nitrogen for your application ANY TIME you need it and REDUCE COSTS.  Real ROI that can be proven and deliver real savings to your annual maintenance budgets!

Problems related with improper layup include general corrosion, which adds to elevated iron levels in boiler water, and pitting corrosion conducive to the cracking of pressure parts and waterside leaks. Inadequate layup also can force operators to extend startups to satisfy chemistry specifications.

The Solution - South-Tek Systems – N2-GEN LPS Series Nitrogen Generator using state-of-the-art PSA technology . By converting compressed air readily available from plant supply our N2 Series delivers concentrated nitrogen output stream.   With integrated PLC-based control system, we assure the plant of nitrogen having a purity 99.6% up to 99.999%.

The N2 Series generator provides a nitrogen blanket capable of preventing oxygen ingress and for improving the overall cycle chemistry.  EPRI recommends a minimum of 99.6% nitrogen purity for wet layup and can easily accomplished with our system.

During periods of fuel-pipe inerting, the generator can easily be set to purge any pipe in the plant, eliminating the need for bulk nitrogen storage or cylinders.  A quick connection to the nitrogen-generator outlet with a standard hose is used to reach any fuel-pipe tap necessary to inert the entire system prior to maintenance.

The Result:   The nitrogen generator has improved overall cycle chemistry by reducing iron deposition in the boiler and HRSG units caused by surface corrosion.

In addition, achieve key startup chemistry much faster following a boiler layup with a nitrogen cap than without. Other benefits achieved include the following:

  • Improved overall cycle chemistry by reducing iron deposits caused by surface corrosion
  • An EPRI key initiative - Achieve optimum and key startup chemistry much faster following a nitrogen boiler layup.
  • Reduced nitrogen bulk, storage, rental costs by utilizing onsite production.
  • The potential for employee injuries associated with handling and maintenance of high pressure cylinders and additional storage space.
South-Tek Systems specializes in the design and production of Nitrogen Gas Generators.  Our products are manufactured in the USA We are pleased to assist you in design, technical specifications, and your system application.  Our reputation is well known for excellent customer service, field engineering, 24/7 support and the highest quality designs to meet your specification requirements.   Let our customer references provide you the assurance that South-Tek Systems is the leader – We are Nitrogen! 

Monday, September 29, 2014

Nitrogen Sparging - Overview & Applications

South-Tek System's nitrogen generators can be used to produce nitrogen for the removal of contaminants through a process known as sparging. Also referred to as gas flushing, the process involves bubbling a gas through a liquid which helps helps remove contaminants thus protecting the integrity of products while reducing safety hazards. During the process, contaminants move toward the surface, with the gas, and are removed.

The food industry often uses nitrogen sparging to help remove atmospheric gases. Once removed, the inert atmosphere helps preserve food quality and increase product shelf life.

[Related: Nitrogen for Modified Air Packing]

Companies also utilize nitrogen sparging to meet pollution guidelines by removing volatile organic compounds.

If your company would like to learn more about nitrogen sparging and how South-Tek may be of service, please contact us at 888-526-6284.

Wednesday, September 24, 2014

How Dave and Busters Uses BeerBlast Nitrogen Generators to Reduce Waste Issues and Improve Profits

Dave and Busters, one America's most highly recognized restaurant brands with over 60 locations in 29 states, has utilized South-Tek's BeerBlast nitrogen generator systems to help eliminate draft beer over foaming waste issues. South-Tek received a letter from Sean Lovaas, the Manager of their Jacksonville, Florida location who noted that their "draft beer costs have been reduced and profits have dramatically improved." He continued, "the BeerBlast has been absolutely trouble free".

The company also found South-Tek's BlastOff - Leak Detection System very helpful. By utilizing this technology, Dave and Busters is able to quickly locate gas leaks in their draft beer systems and remedy situations without large lapses in time and having to make costly service calls.


SouthTek manufactures multiple models of BeerBlast Nitrogen Generators to meet the needs of various size bars and restaurants. Here's an overview of the company's various offerings:

BeerBlast S-200P

Dispenses up to 200 kegs/month or 10 pints/min (5 hr. surge)
N2 PurityBeverage Grade
Maximum pints per min10
5 Hour Surge (kegs)20
Kegs per monthup to 200
N2 storage tank (req'd)30 gallon

BeerBlast S-400P

Dispenses up to 400 kegs/month or 20 pints/min (5 hr. surge)
N2 PurityBeverage Grade
Maximum pints per min20
5 Hour Surge (kegs)40
Kegs per monthup to 400
N2 storage tank (req'd)30 gallon

BeerBlast MB-600P 

Dispenses up to 600 kegs/month or 30 pints/min (5 hr. surge)

N2 PurityBeverage Grade
Maximum pints per min30
5 Hour Surge (kegs)60
Kegs per monthup to 600
N2 storage tank (req'd)30 gallon

BeerBlast MB-800P

Dispenses up to 800 kegs/month or 40 pints/min (5 hr. surge)

N2 PurityBeverage Grade
Maximum pints per min40
5 Hour Surge (kegs)80
Kegs per monthup to 800
N2 storage tank (req'd)30 gallon

If you are a bar or restaurant owner who is interested in learning more about South-Tel's nitrogen generation systems, please call (888) 526-6284

Friday, August 8, 2014

Nitrogen Generators for MAP

Modified Air Packaging, or "MAP," is a process in which food is packaged in such as way as to preserve taste, texture and freshness. MAP is primarily used in the food packaging industry; however, Modified Air Packaging can also be used in other areas such as the pharmaceutical industry.

How does MAP work?

This common practice involves modifyinig the composition of the internal atmosphere of a package to create an enviroment best suited for that product's preservation. The process often begins with lowering the amount of oxygen and rebalancing the atmosphere with another gas. Oxygen can be a threat to perishable food, as its presence can allow the growth of aerobic ogranisms and bacteria, speed up oxidation reactions, and just generally threaten the overall freshness and quality of the product. However, there are some products that would actually spoil more quickly if oxygen was removed completely. For instance, in the case of fruit and vegetables, the absence of O2 can result in anaerobic respiration, with speeds up senescence (aging) and spoilage. In most cases, oxygen is used at low levels (between 3-5%) for best results.

In addition to lowering the amount of oxygen, MAP also involves replacing the oxygen with another type of gas that will be more conducive to preservation. Nitrogen gas is a popular choice for MAP, as it is considered safe and economical.

A few products that use or have used Nitrogen gas for MAP include...

  • Nuts
  • Potato chips
  • Fruit and vegetables
  • Pasta 
  • Cheese
  • Red meat
  • Seafood

Using Nitrogen Generator for MAP 

Using a Nitrogen Generator for the MAP process is the most efficient way to utilize N2 gas. Nitrogen Generators produce high purity N2 gas on demand by separaing the N2 molecules from the surrounding air we breathe. This allows the manufacturer to have a generator on site that can produce a steady supply of Nitrogen to be used whenever the need arises. This also eliminates the need for storing or handling high pressure N2 gas cylinders or relying on costly contracts from gas companies.

If you'd like to know more about Nitrogen Generators and the many other industrial applications they can enhance, contact South-Tek Systems today. South-Tek Systems is a leading designer and manufacturer of Nitrogen Generators.

What makes South-Tek stand out? 

Using their unique Flow Verification Program, clients of South-Tek Systems can be matched up with the most appropriate sized Nitrogen Generator for their needs, whether it's for MAP, laboratory atmosphere control, fire safety, or any other application where Nitrogen can be used, South-Tek likely has a machine that will suit your company's specific requirements.

Call 888-526-6284 today to speak with a South-Tek representative, ask questions, and get a quote on your next N2 Generator.

Additional Resources:


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