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FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
PSA Industrial Oxygen Concentrators1
FX-A Series Model output from 50 to 115 l/min, Pressure 300 kPa(g) to 450 kPa(g)
Purity 90.0 v/v% – 95.5 v/v%
1 Often incorrectly referred to as Oxygen Generators
FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
About the Company FOXOLUTION (Fox) has been supplying on-site O2 concentrators to industry since 2003. FOX’s intellectual
property, expertise and know-how is founded upon the Gas Mixing Technology and Gas Separation Technology developed by Festo (Pty) Ltd in the late 90’s. The technology is now owned by Foxolution as part of a technology transfer agreement. Based on this expertise and decades spent in the gas industry, FOX can provide unique
solutions when it comes to the on-site supply of gas to industry. It is also able to extend its offer to include the servicing, refurbishment and maintenance of all brands and sizes of O2 generating plants.
PSA Technology
Since the 1960’s and the advent of the “heatless dryer” as patented by Skarstrom, Pressure Swing Adsorption (PSA) technology has gained widespread commercial acceptance as the technology of choice for bulk gas separation. It is a particularly cost-effective and energy-efficient technology2 – especially for the on-site manufacture
of O2.
The essential requirement for the PSA adsorption process, is an adsorbent that adsorbs N2 in preference to O2 from air, allowing the separated O2 to be used for process.
Typically, clean, dry compressed air to ISO 8573-1: Class 1.4.1. (or better), is fed, in sequentially-timed increments, into the base of two opposing pressure vessels, each filled with ZMS – the adsorbent. Whilst the one vessel is pressurizing, the other bed is depressurizing and in so doing, “desorbing” the N2 to atmosphere (i.e. the N2 that was “adsorbed” from the previous cycle). The vessel that is being pressurized “adsorbing N2” allows the O2, or “raffinate” to flow out of the top of the vessel to process. The size of the PSA system is directly proportional to the quantity of O2 required. FOX’s PSA plant output ranges in size from a few kg per hour (FOX FX-A series) right up to thousands of kilograms per day (FOX FX-E series). PSA technology has rapidly gained in popularity and acceptance in industry as the preferred “green technology” - not to mention safety, in that PSA O2 is produced in real time opposed to tons of hazardous liquid O2 (LOx) that needs to be stored on site if one goes the traditional cryogenic route.
2 See EIGA Doc. 113/11/E, Rev. IGC Doc. 113/03/E, p. 2 “Typically, to produce one cubic metre of
nitrogen or oxygen in a cryogenic air separation unit requires approx. 1 kWh/m3 while in a non-cryogenic on-site unit it requires approx. 0.5 kWh/m3. The same gas delivered in a 50-litre cylinder requires approx. 2.5 kWh/m3 gas including production, filling and transportation, which indicates that the transportation of gas cylinders uses more energy than the actual production”.
Simple analogy of N2 (black
spheres) being adsorbed
inside the Zeolite Molecular
Sieve (ZMS) matrix, allowing
O2 (white spheres) to pass
freely.
FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
Advantages - FOX FX-A Series of O2 Concentrators
Low energy consumption (± 1.0 kWh/kg O2 @ 350 kPa(g))3.
Green O2 – i.e. no particulate emissions or emissions of SOx / NOx / CO /
CO2 or other gaseous pollutants associated with LOx deliveries.
Produces O2 at site, on demand, in real time.
No hazardous high-pressure compressed O2 storage required.
No hazardous LOx storage required.
Low maintenance cost – function check every 8000 hours4/ once per
year.
Able to integrate into existing control systems.
Minimal startup and shutdown time.
Interactive Human Machine Interface (HMI) modelled on smart-phone
technology for ease of use.
Category 0 Emergency Stop to IEC 60204-1: 2016-Part 1.
Designed for a SIL 2 (safety integrity level) to minimize risk.
Remote monitoring.
Applications
Typical applications include:
CIL gold processing plants Platinum processing plants Aquaculture Wastewater treatment Ozone generating plants Combustion
3 The specific energy requirement is dependent to the required process pressure. 4 Limited to a detailed inspection of the valves.
Wastewater Treatment
Aquaculture
Mining
Combustion
Adsorbent Beds of The Future
FOX provides a guard bed on the air inlet side as standard.
The purpose of the guard bed is to protect the molecular
sieve from loading with moisture should the refrigerated
dryer malfunction.
The molecular sieve has an affinity for adsorbing N2, but
unfortunately, it has an even greater affinity for moisture –
which, once loaded onto the sieve, renders it useless for
adsorbing N2. Depending on the level of moisture content in
the feed air, it is not impossible to seriously impair the
sieve’s ability to adsorb N2 in just a few hours.
Sieve replacement is expensive – not to mention the down
time. Typically, an ISO 8573-1: Class 1.4.1 air quality is
required, but even this relatively tight moisture specification,
gradually sees the sieve load with moisture over time.
The guard bed is, in essence an integrated desiccant dryer,
providing an ISO 8573-1: CLASS 1.3.1 air quality, or better,
along with an extended bed life and other tangible benefits
– especially when it comes to tonnage plant.
FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
Access your PSA from anywhere
From start-up to shut-down, from pressure
to O2 purity. The FX-A series can be fitted
with a ‘real-time’ monitoring system,
allowing you to control your system
remotely.
Connected via Wi-Fi or Ethernet cable; The FX-A can be as close as your mobile phone, allowing you to keep a close
eye on your system. Programed to notify you by SMS should any alarms be triggered, giving you a system with
increased safety and real-time monitoring.
Carbon Footprint
A carbon footprint may loosely be defined as the summation of the total greenhouse gas emissions produced directly and indirectly by
an organization or company. The footprint is then calculated and reported over a 12-month period. With the FX-A series of O2
concentrators which only require ± 1.0 kWh for every kg of O2 produced at point of use, the FOX solution is a readily-available
environmentally-friendly alternative.
According to EIGA, direct emissions, such as
deliveries of O2 in cylinders, reportedly more than
double the carbon footprint when compared to
concentrator O2 produced on-site5.
Oxides of nitrogen, sulfur emissions, soot and the
like that emanate from internal combustion /
diesel-fueled road tankers, not to mention the CO2
footprint of oil changeouts, tyres, wash bays and
so forth, all contribute towards greenhouse gas
emissions.
Funneling down, one can also add the CO2
footprint of extracting the crude and the refining
thereof, transportation of the product from the
refinery to bulk storage / service stations etc.
5 (Ref. EIGA Doc. 113/11/E, Rev. IGC Doc. 113/03/E, p. 2). The pie chart reflects the CO2 footprint
of LOx delivered by a 20T road tanker within a 35 km radius of a LOx plant. The other consideration is that the road tanker will only drop ±2.5T of LOx (usually 2 x drops per month) at a site that would otherwise utilize a FX-A Series concentrator for its O2 needs.
37%
31%
15%
10%
7%
Comparative CO2 Emissions
Cylinder O2 Delivered
LOx (New Plant)
4.5 Bar PSA
1.8 Bar PSA
VSA O2
Note: "New" LOx plant is more efficient than aging LOx plant.
FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
Technical Specifications
Model
Air Inlet Pressure
before Regulation
kPa(g)
Estimated Feed Air Required (FAD) 2 3
m3/min
Estimated Air Power Required 2
kW
O2 Outlet Pressure
kPa(g)
O2
Output
l/min
Feed Air
Inlet Connection
Inches
O2 Outlet
Connection
Inches
Dimensions W x D x H
mm
Noise Level5
d(B)A
Weight
kg
FOX-50
650
0.65
5.5
310-450
50
3/4" BSPTF
1/2” NPTF
650 x 600 x
1680
< 80
330
FOX-85
650
1.10
7.5
310-450
85
3/4” BSPTF
1/2” NPTF
820 x 760 x
1770
< 80
400
FOX-115
650
1.50
9.0
310-450
115
3/4" BSPTF
1/2” NPTF
880 x 850 x
1900
< 80
500
Notes:
1. FOXOLUTION PSA O2 Concentrators produce O2 @ 93 v/v% ± 3 v/v% at 310 kPa(g). Higher O2 purities and outlet pressures are available upon
request. On standard machines, the O2 purity and O2 outlet pressure are load dependent.
2. FOXOLUTION PSA O2 Concentrators require compressed air to ISO 8573-1 (2010) air quality Class 1.4.1. Free Air Delivery (FAD) estimated at
20°C, 1013 mbar to ISO 1217: 2009 Annex C and not Standard Temperature and Pressure (STP)4.
3. FAD requirements are dependent on the site conditions with respect to:
a. Altitude;
b. Ambient Temperature.
4. STP (1982) taken at 273.15°K (0°C) and 100 kPa – Ref. I.U.P.A.C. (International Union of Pure and Applied Chemistry).
5. Noise pressure level as per ISO 2151: 2004 and ISO 9614-2: 1996 tolerance: ± 3 dB (A).
Model
Air
Receiver
Liters
O2
Receiver
Liters
Front View
Side View
Top View
Isometric
View
FOX-50
100
100
FOX-85
150
150
FOX-115
150
150
FX-A Series (2018) www.foxolution.co.za Custom pressures and flows available upon request
ASDASD www.foxolution.co.za
How to Order
FOX-85 - 230 – PT100 - PDP - HN – FO2P - OSTN
Oxygen Concentrator Model FOX-50 = 50 l/min FOX-85 = 85 l/min FOX-115 = 115 l/min Power Requirement 120 = 120 VAC 60Hz 230 = 230 VAC 50Hz Feed Air Temperature Sensor PT100 = Include Sensor Pressure Dew Point Sensor PDP = Include Sensor Touch Screen Controller H1 = Include 4.3” Touch Screen Controller H2 = Include 7.0” Touch Screen Controller Oxygen Sensor FO2P = Include Sensor
Oxygen Storage Tank OST1 = Include Vertical Tank OST2 = Include Horizontal Tank
Example 1: Client requirement, a FOX-85 O2 concentrator for South Africa (230 VAC / 50 Hz), a feed air temperature sensor, a pressure dew point
sensor, an O2 sensor, a 4.3” touch screen controller and a vertical O2 storage tank.
Code: FOX-85-230-PDP-H1-FO2P-OST1
Example 2: Client requirement, a FOX-50 O2 concentrator for South Africa (230 VAC / 50 Hz), no feed air temperature sensor, no pressure dew point
sensor, no O2 sensor, a 7.0” touch screen controller and a horizontal O2 storage tank.
Code: FOX-50-230-PT100-H2-OST2
CONTACT DETAILS: Unit 1 & 2, Pinetree Business Park, Sunnydale,
Cape Town, South Africa, 7975
Tel: +27 (0) 21 785 4002
Fax: +27 (0) 21 785 2057
E-mail: info@foxolution.co.za
www.foxolution.co.za The Information provided in this brochure for promotional purposes only and not a public offer. To the best of Foxolution’s knowledge, the above information is accurate and truthful at the time of publication. Errors and omissions are excepted (E&OE).
1st in Category – Small Business 2018 Sanlam &
Business Partners
Finalist in the Cape Talk Business Accelerator with
Nedbank Awards 2018
Finalist in the Premier’s Entrepreneurship Recognition Award 2017
for Business with Global Reach
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