TIANJIN PUHUI SCIENCE AND TECHNOLOGY DEVELOPMENT COMPANY LTD Profile
PUHUI Systems have 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, PUHUI 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. PUHUI is responsible for after-sales services to nitrogen/oxygen generators and other related equipment offered by us.
PUHUI is dedicated to supplying with our customers with more reliable, more economical and more convenient air separation solutions and professional service.
PUHUI ™ Oxygen Generator Features
ü High Reliability: Proven PSA technology, simple engineering design, few moving parts and international standardized manufacturing techniques ensure minimal maintenance and maximum reliability.
ü Low Cost: Patented REFLUX high-efficiency control system reduces air consumption, saves electric power.
ü Convenience: Unattended operation controlled by PLC automatically. Optional touch-screen control, display and alarm system makes the generator to be operated by one touch. It displays working parameters, reminds filter elements replacing and instructs trouble shooting. It enables remote control.
ü Easy Installation: Skid mounted for easy installation and move.
ü Longer Service-life: Exclusive bed containment system extends Zeolite Molecular Sieve (ZMS) bed life to more than ten years.
ü Minimal Maintenance: The generator has highly-reliable valves and no other moving parts. Filter elements are easily replaced.
PSA Oxygen Generator Working Principles
The principles of pressure swing adsorption (PSA) Oxygen generator are adsorption and diffusion.
Each gas has a characteristic adsorption rate that when adsorbed by Zeolite Molecular Sieve (ZMS). ZMS has large surface area containing volume of micro pores and passageways. Nitrogen has a higher adsorption rate than oxygen. When compressed air enters ZMS, oxygen molecules are able to pass through this large surface. And nitrogen molecules are adsorbed to the surface area.
As the ZMS is saturated with nitrogen, it should be depressurized to regenerate for next cycle. We use two towers filled with ZMS to produce a continuous stream of nitrogen.
During depressurization, the oxygen of lower purity than required is transferred to another tower, which is called pressure equalization. Pressure equalization donates to higher efficiency and less energy consumption.
Know-how in the definite time and ways to equalize the pressure is the key to the best results
| Name | Instruction |
| OCSS(A key to start and stop) | Smart a key to start - stop |
| AESS (AUTO VENT PORT)System | ( Automatically vent the unqualified oxygen) |
| HMI(Touch Screen Controlling System) | All operating data of oxygen generator will be displayed in the touch screen via the PLC, and touch screen can control the whole system |
| IAS(Interlock alarm) | When one part of system is faulty alarm, the whole system will shut down interlocking |
| ABS(Automatic sewage system) | The water and oil in the equipment will be exhaust automatically |
| EES(Energy Efficiency Systems) | According to different supply amount of gas, controlling the starting and stoping and frequency of systems. |
| REFLUX(Components control system) | Reduce Compressed air consumption, reduce energy consumption. |
| SOPRD(Gas pressure regulating device) | Controlling the pressure of gas by the regulating device. |
| OSS(Backup oxygen system) | When a power outage, system failure, regular maintenance, Providing oxygen still. |
| Wi-Ctrl(Remote wireless monitoring system) | When the device alarm, the information will be sent automatically to the remote data center and the mail box of local equipment maintenance engineer, it can be settled timely in remote and local.
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We, Tianjin PU Hui Science & Technology Development Co., Ltd is located in Balitai Industrial Area, Jinnan District, Tianjin, China, it has good location and convenient traffics, and it is near to Binhai New District, covering the area of 15, 000 square meters. We are a young and active enterprise of science and technology development.
The company focuses on R&D, production design, manufuturing, selling, service and etc. We mainly produce PSA Nitrogen Generator, PSA Oxygen Generator and Gas seperation assemble products.
All of our staff including of technology, production and maintenance have the working experience of more than 5 years, they can provide you the special before-selling and after-selling service. The products are mainly used in oil and petrochemicals, food storage, food package, chemicals, metallurgy, pharmacy, glass, electronics, SMT, nitrogen inertness protection, tire nitrogenization, aquaculture, sewage treatment, hospital, laboratory, gas chromatography, fuel cell and so on.
We always forcus on the research and developemnt of high efficiency & energy-saving products of air separation from the beginning, completely think of the customers' Investments and operation costs.
We have obtained three items of country technology talents. The complete system of after-selling can guarantee the normal running of equipments, also can give a warrantee for the high-quality and excellent production.
Upto now, hundred units of equipments designed by us are being used in domestic every area. Also we have already established the selling network in South-East Asia and Africa for the future business expanding.
We sincerely welcome our customers at home and abroad to our company for visit, business talk and cooperation.
