OUR PRODUCTS
Nitrogen Gas Plants
Our gas generators are of optimum quality, durable, and easy to handle. Our on-site PSA nitrogen generators are custom-made and can be adjusted to give the desired nitrogen quality for your process and application.
Hydrogen Gas Plant
We offer a diverse range of Hydrogen Gas Generators, including Water Electrolysis Hydrogen Generator and Cracked Ammonia Hydrogen Generator. These generators function by catalytic cracking, in which ammonia is separated from nitrogen to produce gas with 75% hydrogen and 25% nitrogen. The gas is then purified further in a molecular sieves unit that removes any uncracked ammonia and moisture.
Air Gas Dryers
Selection of Air Dryer
Compressed air is widely used in industries for various applications such as pneumatic tools, instruments, and machines, as well as in production processes. However, using wet air can lead to a number of problems, such as rust and scale deposits in steel pipes, increased resistance in flow, malfunctioning of process control instruments, corrosion and damage to electromagnetic valves and pneumatic systems, peeling and blistering of spray painted surfaces, and more. These issues can negatively affect the quality of the final product and lead to excessive maintenance costs. Therefore, it is crucial to ensure that the compressed air used in industrial processes is dry, to avoid these problems and ensure optimal performance.
Ideal Compressed Air System -
The compressed air coming from the compressor can contain excessive moisture and harmful impurities. To obtain clean and dry air, a typical compressed air system can be used as shown in the sketch below. When compressed to 7Kg/cm2g, the temperature of the discharged air can reach up to 140°C. To cool down the air and remove 90% of the moisture and oil, an after-cooler and separator are installed after the compressor. For example, if the compressor takes in 100 NM3/hr of ambient air at 40°C and 50% relative humidity, the after-cooler will condense an average of 30 liters of water in 24 hours. If the outlet air temperature from the after-cooler is 40°C, it still contains 8000 ppm moisture. At 45°C, compressed air contains 10,500 ppm, and at 50°C, it contains 13,500 ppm moisture, which can be removed by the air dryer. Therefore, the lower the temperature of the air at the dryer inlet, the smaller the size of the air drying unit required.
Pre Cooler -
In order to maintain the quality of compressed air, it's crucial to precool it to a temperature of 40°C before it enters the air dryer, if its temperature is higher than that. To accomplish this, a shell and tube type heat exchanger is used with cooling water. As a result of this cooling process, some of the moisture present in the air condenses out, which in turn helps to reduce the moisture load on the air dryer. This results in better dew-point of air and ensures that the compressed air remains of high quality.
Dew Point Selection -
"Dew point is the measure of moisture in Air. It is the temperature at which moisture present in the Air, starts condensing. Lower the Dew Point, more dry is the Air”. Air of (-) 40°C Dew point means no moisture would condense unless the temperature of the compressed air goes below (-) 40°C. For most industrial applications Dew point of around (-) 10°C is satisfactory. However, as a common industrial practice, most of Air dryers are rated for (-) 40°C Dew point. Lower the Dew point, higher would be the operating cost. Hence, proper selection of Dew point is very important for economical operation.
Dew point, at Atmospheric pressure Moisture content, w/w
0°C 3800 ppm
(-) 5°C 2500 ppm
(-) 10°C 1600 ppm
(-) 20°C 685 ppm
(-) 30°C 234 ppm
(-) 40°C 80 ppm
(-) 60°C 6.5 ppm
(-) 80°C 0.3 ppm
