1 General introduction Carbon molecular sieve (CMS) as a new type of adsorbent has developed rapidly since it was industrialized in the late 1960s. CMS is a special activated carbon, mainly composed of micropores below 1nm and a few large pores. Due to its special microporous structure, it can be adsorbed according to the size and shape of the molecule, thus having the ability to adsorb molecules. Since EmmettL discovered in 1948 that the carbonization of Saran resin (a polymer of ethylene vinylidene and vinylidene chloride) has a sieve effect, a lot of work has been carried out in various countries. In recent years, research in this area has also been carried out in Western Europe, Japan and China. CMS is mainly used in the field of adsorption separation, it has been maturely applied to pressure swing adsorption separation of N2 and O2 in the air. At present, the major companies producing CMS in the world are mainly Kuraray, Takeda, and some Chinese companies, among them, Gamma Gas CMS are widely used on our own nitrogen generators, also export for overseas nitrogen generator manufacturing and equipment updating. 2 Production process Main production of CMS is as below: Coconut shell primary carbonization → ball milling → kneading and kneading → extruded strip molding → broken strip granulation → secondary carbonization → activation → aperture adjustment → detection → finished product Primary carbonization: refers to the method of carbonizing raw materials under suitable pyrolysis conditions under inert atmosphere. Under pyrolysis conditions, various groups, bridge bonds, free radicals and aromatic rings in the raw material molecules have complexly decomposed an

These two sets of 99.995% purity, 600 Nm3/hr flow rate onsite nitrogen generators are used for a pharmaceutical company, which greatly reduces their nitrogen gas consumption cost.

As we all know, the hot galvanizing of strip steel is because zinc can form a corrosion-resistant film on the metal surface in a corrosive environment (corrosive media such as H2O, O2, and CO2), thereby extending the service life of the material. Galvanizing has become an effective method for anticorrosion of steel materials. Hot-dip galvanized strip has a beautiful and shiny appearance, so it is very popular and widely used. Over 160 years, hot-dip galvanizing technology has made great progress. In the long development process of hot-dip galvanizing, the early production efficiency was very low. Until 1931, the Polish Sengimir integrated the annealing process and the hot-dip galvanizing process into one, this world-renowned Sengemir method has truly opened a new era of continuous hot-dip galvanizing of steel strip. Protective gas for hot-dip galvanizing Generally, the input of a small amount of hydrogen in high-purity nitrogen will improve the protective effect of the gas. When the leakage rate of the furnace is not too large, the oxygen infiltrating into the furnace reacts with hydrogen, and an appropriate hydrogen-water ratio can prevent the oxidation reaction from occurring.

The principle of laser cutting is performed by a high-energy laser beam melt metal material, high pressure and high flow gas is used to blow the melted metal material, forming cutting slits. NC system controls the motion axes to complete graphics processing. In laser cutting operating, the cost of N2 (nitrogen) gas has reached 1/3-1/2 of total cost. To reduce laser cutting machine customers` nitrogen gas consumption cost, Gamma developed nitrogen generator exclusively for laser cutting application. With this nitrogen generator, customers not only can get low cost nitrogen gas, but also increa

This is the delivery of one 99.5% purity, 1700 Nm3/hr nitrogen generator for a pharmacy company, totally three sets same specification nitrogen generators are ordered.

In later September 2019, Gamma Gas launched a new energy-saving PSA nitrogen generator, the NGS-12V nitrogen generators. This nitrogen generator achieves the best energy-saving performances thanks for Gamma Gas technology breakthrough of 12V process and the optimized adsorption tower structure and the using of most advanced carbon molecular sieve. It is the outcome of Gamma Gas 5 years constant R&D efforts. For nitrogen generator from many manufacturers, producing 99.99% purity, 100 Nm3/hr nitrogen requires an GA55 Atlas Copco air compressor, while Gamma Gas NGS-12V nitrogen generator only requires GA37+ air compressor, and the flow rate can reach 120 Nm3/hr. Producing 99.999% purity, 100 Nm3/hr nitrogen, many factories requires an GA90 Atlas Copco air compressor, while Gamma Gas NGS-12V nitrogen generator only requires a GA55+ air compressor, and the production can be 110 Nm3/hr. This is a big breakthrough in PSA nitrogen generator energy saving field, it remarkably reduces the electricity consumption, saving operation cost every hour. After the launch of NGS-12V nitrogen generator, customers are astonished by its performance. [From the machines working at our workshop, we know Gamma Gas nitrogen generators have good operational reliability, but really did not realize that your this new machine consumes so little compressed air. This nitrogen generator must be installed in our workshop, this energy-saving machine is what we are looking for for a long time", this is the comment from our cust

For some customers, they need mobile containerized outdoor use onsite nitrogen generator to be used outdoor, suitable to be used under wide temperature range.

These two sets of 99.9% purity, 1200 Nm3/hr onsite gaseous nitrogen generators are supplied for a Calcium carbide field customer. Wonderful weather, very suitable for site installation. Actually there is little site installation work except lifting them to the right positions.

For some customers, their oxygen consumption location is in dangerous area, which need explosion proof oxygen generator. This oxygen generator is certified as explosion proof product, suitable to be used in such area.

These are three 99.99% purity, 80 Nm3/hr flow rate cabinet nitrogen generators running at site, installed one week ago.

This nitrogen generator is supplied to one big engineering company, they have one power plant project in Georgia, the nitrogen generator is used to provide clean and dry protective gas during plant starting stop procedure. The pressure vessel of this nitrogen generator complies with ASME standard, U stamped by International Certification Body. The adsorption towers are fatigue pressure vessel, with number of cycles 500,000 times/year, and the design life is 20 years.

Gamma Gas Factory

PSA Nitrogen Generator Technical Specification Specifications Item Name Specifications 1 Nitrogen capacity:

Nitrogen Generator System Functions l Siemens PLC full automatic controlled operation; l Siemens Smart 700 touch screen human machine interface; l Nitrogen purity, flow rate, pressure display from field instrument. l Manual emergency shutdown push button for emergent stop; l Maintenance reminding, failure analysis, operation tracing functions; l With functions of system failure alarm, purity low alarm. l Designed for more than 8000 hours annual operation;

PSA Nitrogen Generator's Technical Principle PSA nitrogen generator is a machine producing nitrogen by separating nitrogen from air. It adopts the principle of PSA(pressure swing adsorption). Pressure swing adsorption processes rely on the fact that under pressure, gases tend to be attracted to solid surfaces, or "adsorbed". The higher the pressure, the more gas is adsorbed; when the pressure is reduced, the gas is released, or desorbed. PSA processes can be used to separate gases in a mixture because different gases tend to be attracted to different solid surfaces. When air is passed under pressure through a vessel containing an adsorbent(carbon molecular sieve) bed that attracts oxygen more strongly than it attracts nitrogen, part or all of the oxygen will stay in the bed, and the gas coming out of the vessel will be enriched in nitrogen. When the bed reaches the end of its capacity to adsorb oxygen, it can be regenerated by reducing the pressure, thereby releasing the ads

PSA Nitrogen Generator' main components list Item Part name Brand Function description 1

Why choose Gamma, not other suppliers? High reliability For PSA oxygen generators, the most important factor is equipment operation reliability, especially for overseas market, where maintenance and repair service should be minimum. Keeping the equipment run at the designed purity and flow rate without malfunction is of critical importance. Similar to other suppliers, Gamma Gas manufactures PSA nitrogen/oxygen generators, but unlike other suppliers, Gamma is using the most advantage process and special equipment structure to ensure long time operation stability. Now in China, there are many companies manufacturing PSA N2/O2 generators, but how many of their products are running without purity decrease? without flow rate drop? without problems such as molecular sieve ejection,etc. Gamma Gas strongly recommend customers to contact us for more details. Energy-saving As PSA N2/O2 generator itself consumes very little power, the main power consumption is the air compressor. Compared with other suppliers, for same flow rate and purity, with Gamma's special process and structure, the compressed air needed is about 20% less, theref

Nitrogen use in the lab Nitrogen gas has been used in laboratory analysis for decades. In the past, labs were required to have their nitrogen gas supply delivered in cylinders or in bottles from their closest nitrogen plant, which for some labs could be some distance away. These cylinders or bottles would then supply a chromatography instrument, or perhaps a detector in the case of GC, allowing the lab to carry out its analysis. However, for most mass spectrometers, a high volume of nitrogen gas is required meaning cylinders or bottles would be consumed in a matter of days, primarily when using LC-MS. This can lead to the regular interruption of analysis and inconvenience of switching over cylinders for analysis to continue. Furthermore, cylinders and bottles deliver inconsistent purity when they reach the lower end of their capacity as contaminants can enter the empty space in the cylinder and mix with the nitrogen. These impurities can have an impact on the integrity of analysis as they can react with the sample. There is an alternative for nitrogen cylinders, an on-site nitrogen generator. A nitrogen gas generator not only removes the hassle of having to change over cylinders, it provides an uninterrupted supply of gas at a consistent purity. This consistency is generated using one of two technologies, namely, Pressure Swing Adsorption (PSA) and membrane nitrogen generators.

Nitrogen Generator Technical Specification Compressed Air Pressure 0.7-1.3MPa(7Bar-13Bar)

This nitrogen generator uses PSA technology, supplying 99.5% purity, 2200 Nm3/hr flow rate nitrogen from air. It is installed at site, after commissioning, it will provide qualified nitrogen for downstream application.