Pressure Swing Adsorption technology for nitrogen generator
The technology of air-to-nitrogen production with the use of adsorption processes in nitrogen generators is well studied and widely applied at industrial facilities for the recovery of high-purity nitrogen.
The operating principle of a nitrogen generator utilizing the adsorption technology is based upon the dependence of the adsorption rates featured by various gas mixture components upon pressure and temperature factors. Among nitrogen adsorption plants of various types, pressure swing adsorption (PSA) plants have found the broadest application world-wide.
The system's design is based on the regulation of gas adsorption and adsorbent regeneration by means of changing pressures in two adsorber-adsorbent-containing vessels. This process requires constant temperature, close to ambient. With this process, nitrogen is produced by the plant at the above-atmospheric pressure, while the adsorbent regeneration is accomplished at below-atmospheric pressure.
The swing adsorption process in each of the two adsorbers consists of two stages running for a few minutes. At the adsorption stage Oxygen, H2O and CO2 molecules diffuse into the pore structure of the adsorbent whilst the nitrogen molecules are allowed to travel through the adsorber-adsorbent-containing vessel. At the regeneration stage the adsorbed components are released from the adsorbent vented into the atmosphere. The process is then multiply repeated.
How PSA Nitrogen Generation Works
Adsorption is the physical process of separating molecules. Our Pressure Swing Adsorption (PSA) systems generate nitrogen, by separating it from the oxygen in ordinary air.
A vessel containing carbon molecular sieve, or CMS, is filled with compressed air. The smaller oxygen molecules are adsorbed by the sieve material while the larger nitrogen molecules drift past and are collected in a nitrogen receiver.
Pressure is then released from the vessel, and the oxygen molecules are vented to the atmosphere. At the same time, the cycle is repeated in a second vessel to provide a flow of gas into the nitrogen receiver.
KNA-1500-99.6% PSA technology VS KNB-1500-99.6% Membrane Technology
| Items |
PSA technology |
Membrane Technology |
| Nitrogen output Nm3/h |
1500 |
| Nitrogen purity % |
99.6 |
| Nitrogen installation power KW |
40 |
70 |
| Air compressor installation power KW |
500 |
750 |
| Power supply V/HZ |
380/50 |
380/50 |
| Compress air consumption Nm3/min |
62 |
82 |
| Compress air inlet pressure MPa |
1.1 |
1.3 |
| The best adsorption pressure should be 8-9 barg, it would be wide selection scale for air compressor |
The best adsorption pressure should be 12 barg, it would be specified required for air compressor |
| Key component using life |
Carbon Molecular sieve for 8 years |
Membrane for 4-5 years |
| Control type |
PLC, Auto control |
PLC, Auto control |
| Occupied land(M)(LxWxH) |
15*5*4.5 |
18*5*4.5 |
| Noise |
55DB(Maximum instant 85DB) |
55DB(Maximum instant 85DB) |
| Environmental Requirements |
Indoors, ventilation,38ºC |
Indoors, ventilation,38ºC |
| Investment cost |
Nitrogen Generator |
About $225000 |
About $799000 |
| Screw air compressor |
About $93000 |
About $150000 |
No matter from points of energy consumption, land, investment, maintenance cost, the PSA technology is a better Choice!!
1.Company overview
Zhejiang Yuanda Air Separation Equipment Co., LTD. has a range of PSA nitrogen & oxygen generators, membrane nitrogen & oxygen generators, nitrogen purification systems etc, and are widely used in industries of petroleum, oil & gas, chemicals, electronics, metallurgy, coals, pharmaceuticals, aerospace, autos, glass, plastics, food, medical treatment, grain, etc. With years research in air separation technology and rich solution experiences in various industries, YDGET sticks to providing our clients with more reliable, more economical, more convenient professional gas solutions.
We have an experienced professional team always ready to be at your service. The sales engineers carefully analyze your specified requirements and offer suitable solutions for you. The after-sale service system guarantees swift response to your problems within 24 hours and their resolutions in the shortest time. YDGET is responsible for after-sales services to nitrogen/oxygen generators and other related equipment offered by us.
YDGET is dedicated to supplying with our customers with more reliable, more economical and more convenient air separation solutions and professional service.
2. Why choose PSA nitrogen generator ?
High nitrogen purity
PSA nitrogen generator plants allow production of high-purity nitrogen from air, which membrane systems are unable to provide - up to 99.9995% nitrogen. This nitrogen purity may also be ensured by cryogenic systems, but they are considerably more complex and justified only by large consumption volumes. The nitrogen generators use CMS (carbon molecular sieve) technology to produce a continuous supply of ultra high purity nitrogen and are available with internal compressors or without.
Low operating costs
By substitution of out-of-date air separation plants nitrogen production savings largely exceed 50%.[citation needed]
The net cost of nitrogen produced by nitrogen generators is significantly less than the cost of bottled or liquefied nitrogen.
Nitrogen Generators Create Less Impact on the Environment
Generating nitrogen gas is a sustainable, environmentally friendly and energy efficient approach to providing pure, clean, dry nitrogen gas. Compared to the energy needed for a cryogenic air separation plant and the energy needed to transport the liquid nitrogen from the plant to the facility, generated nitrogen consumes less energy and creates far fewer greenhouse gases.
3.Why choose Yuanda KNA series PSA Nitrogen Generator
Specification
1) Purity: 95-99.9999%
2) Capacity: 5-8000Nm3/h
3) Pressure out: 0-0.8Mpa (1.0~15.0MPa is also available)
4) Dew point: -45 degree-- -70
Technical Features
1). Imported pneumatic valves, using life is more than 3 million times;
2). Siemens PLC Intelligent program controller, easy and stable operation;
3). Specific inert ceramic balls diffusion technology makes airflow distribution evenly; improve the adsorption efficiency for adsorbent;
4). Self-force cylinder compress device (Patent No.: ZL-200820168079.9) to protect the using life of the carbon molecular sieve;
5.) Original centrifugal vibration Filling (Patent No.: ZL-200820168078.4) effectively ensure the maximum filling volume.
4. Nitrogen/oxygen Gas typical application
5. Package transportation & some end users
6. Quality Control
YUANDA Gas Enigineering & Technology You can be sure of the quality of YDGET solution. YUANDA uses only the best suppliers and components. And all nitrogen generators are tested & commissioned by professional Experts to make sure everything is qualified before they leave the factory.
7. Warranty
The period of warranty on the goods from YDGET is 360 days since the completion day of installation and commissioning or 420 days after receiving the goods, whichever happens earlier.
8. Service & Support
YDGET offers a range of services to help you maximize your benefits. For maximum convenience, we offer a fixed price service agreement based on operation time or calendar
time. Of course, all customers are welcome to call us at any time. We are always more than willing to assist you.
1) Consultancy
Help for self-help, exchange of experience and individual support.
If you have questions on plant operation or need somebody for troubleshooting, we give you advice either on the phone or in writing. The direct contact with you is very important for us as it is the basis for a permanent cooperation as partners to the benefit of both sides.
2) Commissioning
Systematic from final acceptance of erection to approval of proper operation and guaranteed features. This includes extensive operational tests, professional filling with adsorbents and catalysts, proper start-up, optimal setting of operating parameters and check of all safety functions. At the same time we train your operating personnel on functions and operation of the plant.
3) Spare Parts Service
Worldwide, quick and low-priced over the complete lifetime of your plant. The distinct tagging of all plant components delivered by us enables us to identify clearly the spare parts requested by you. We supply you with products designed for a long life and economic efficiency.
For modifications and extensions we look for the most optimal and economic solution for your individual purpose.
4) Maintenance/Revisions
Regular inspection and maintenance ensures permanent operation, avoids damage and prevents unexpected breakdowns. In the course of maintenance/revision works we check all relevant components for function and condition, exchange defect, used and worn parts and afterwards optimally eadjust your plant to the given operating conditions. Depending on the plant size and
scope of work, our service range comprises also a detailed scheduling of revisions as well as coordination and supervision of contractors. As a matter of course we supply maintenance documentation in form of reports and spare part recommendations, and we coordinate our schedules according to your requirements.
5) Training
Know-how for your personnel.
Operation, maintenance and repair, electric measuring and control equipment or process engineering - we offer you specific training by our experts. Whether on site working with theplant itself, or on our permises, we concentrate on your questions and problems.
9. How to get a prompt quotation?
Do not hesitate to send us mail with the following data.
1) N2 flow rate: _____Nm3/hr
2) N2 purity: _____%
3) N2 discharge pressure: _____Bar
4) Voltages and Frequency: ______V/PH/HZ
5) Nitrogen Application.
10. Zhejiang Yuanda Air Separation Equipment Co.Ltd.
Add.: Gaoqiao Industrial Zone, Hangzhou, Zhejiang, China 311402
Tel:+86-571-61712588 Fax:+86-571-61712599
Contact: Jane Qian
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