Nuberg Engineering Ltd.

Sector 64, Noida, Uttar Pradesh

The Heat of Compression (HOC) dryers are No-Purge Loss type desiccant dryers based on adsorption principle. The hot air from the Compressor at min 120 deg C and higher temp, is used directly for regeneration of the desiccant. After regeneration, this air is cooled down to 40 deg C and then it is dried in second tower. Thus, the use of heaters is eliminated. For eg. in the 6+6 Hrs. Cycle the hot air is fed for regeneration for 4 Hrs. and for balance 2 Hr. a changeover takes place where the air is first cooled in cooler, then dried and before going to the outlet, cools the regenerated desiccant bed, thus bringing it down to ambient temperature. This cycle is reversed for the next 4Hrs. where the Adsorber drying the air in the previous cycle goes for regeneration and vice versa.
It’s having least running cost with best quality of air.

 

Salient Features:

• Having least running cost
• Best quality of air
• Lesser payback period
• Continuous duty with long efficient service life
• Easy to install and user friendly
• Capacity: 750 CFM to 6000 CFM
• Dew Point: -40 to -60°C ADP
• Purge Loss: NIL

In this dryer, compressed air is passed though the regenerated desiccant bed for moisture removal and dry air comes out from the outlet. For regeneration of desiccant, atmospheric air is heated to a temp of 175Deg C & passed through the saturated desiccant bed in counter direction. All the adsorbed moisture vaporizes and is vented out. Cooling of the bed may be done with atmospheric air but without heater or some air may be re-circulated through heat exchanger, depending on the dryness of air required. This is a no purge loss type system which can dry air upto(-) 80 Deg.c. Generally such dryers are preferred for higher flow rates.

 

Salient Features :

• Low operating cost for high capacities.
• Dew point upto (-) 60 Deg C can be achieved.
• Most economical in the range from 1000 CFM onwards

The heatless type dryer is designed to take advantage of the natural tendency to dessicant to established equilibrium with their surrounding and can deliver super dry compessed air. these type of dryers are the most economical and dew poins upto (-)40 °c are easily achieved. such dryers are mostly preffered for flow upto 500 cfm.

Features:

• Excellent functionality
• High efficiency
• Superior performance
• Robust construction

Specifications:

• Capacity: 20 CFM to 500 CFM
• Dew Point: -40 to -60 deg C ADP
• Purge Loss: 12-15 %

Process:

• In this dryer two desiccant towers are used. While one tower is in drying, second tower undergoes regeneration simultaneously.
• Part of dry air coming out from tower in-line goes for regeneration of the second tower.
• Tower changeover takes place at every 5 minutes by a sequence controller mounted in control panel.

This is a simple alternative for medium & bigger capacities where Heatless Dryer become uneconomical due to heavy purge losses. In this type of dryer the regeneration is accomplished with a very small portion of dried air/gas, which is circulated in the tower duly filled with desiccant and embedded with heating elements. The advantage to this type of dryer is that purge loss is reduced to almost 3-5% dew point upto (-80^oC) can be achieved.

 

Details : This is improved version of heat less dryer where purge air loss is very very low due to regeneration is achieved by dry air at low pressure and at high temperature. To achieve this heaters are provided in each tower to heat the purge air to around 180 Deg C, which enhances its moisture carrying capacities. This hot purge air at low pressure is passed through the desiccant bed to regenerate the Activated Alumina.

Features :

• Capacity -  200 CFM to 1000 CFM
• Dew Point -  -60 to -80 deg C ADP
• Purge Loss -  5-10

As, we have a well-organized resource chain system, our organization is capable of fulfilling wholesale consignments with ease and make on time deliveries. With our customized packaging solutions, buyers can get packages made according to their specific requirements. Furthermore, they can rest assured the packaging is industrial grade.