Prithvi Engineering.

Airoli, navi mumbai, Maharashtra

Our Heatless air dryer consisting of two towers filled with Activated Alumina and at a time one tower is under process and another tower is under regeneration simultaneously. We can achieve dew point of (-) 400 C (at atmospheric pressure) we can also get a dew point up to (-) 800 C but quantity of purging air will increase up to 25%. The capacities that we offer in this category are 10 NM3 hr to 1000 NM3 hr. Some of the features that need to be highlighted are

It is a skid-mounted unit consisting of freon chiller, air to air pre-cooler and a moisture separator. First air is pre-cooled with outgoing chilled air to around 25° c and then it is cooled in a freon chiller to (+) 2° c temperature. This reduces refrigeration load of the unit. Outgoing dry air has (+) 2° c pressure dew point and comes out at around 25° c temperature. (+) 2°c dew point in refrigerated air dryers corresponds to around (-) 23°c atmospheric pressure dew point. Lower dew point is not possible from refrigerated dryer, as moisture condensed would start freezing on freon tubes, if lower dew points are tried.1

Our ammonia cracker produces mixture of hydrogen and nitrogen, which is mostly used for heat treatment furnace. Ammonia cracking takes place in presence of nickel catalyst at 8500 c temperature and cracks ammonia to n2 + h2 mixture containing 75% hydrogen and remaining 25% nitrogen. The cracked ammonia gas contains around 80 ppm un-cracked ammonia impurities and its dew point is only (-) 300 c.

We are offering internally heated air dryer. The drying unit has 2-vessels filled with activated alumina or molecular sieves desiccant. One vessel remains in drying cycle for 4 hours, while other vessel simultaneously regenerates at atmospheric pressure. Around 3% flow of dryer capacity is used as purge for regeneration. Electrical heaters are provided in a central finned stainless steel pipe in both drying vessels. Heating cycle is for 2 hours and in this time hot purge air increases desiccant temperature to around 1000c. At this temperature regeneration is complete (due to dry air purge). Dew point achieved is around (-) 400 c. If still lower dew point is required, air purging rate is slightly increased to 5% for (-) 600 c and to 7.5% for (-) 800 c dew point.

The main ingredient of Oxygen Plant is ZMS (ZEOLITE MOLECULER SIEVE) and ZMS is having indefinite pores on the surface, which adsorb the molecules of Nitrogen, Moisture and Unwanted gases from compressed air. Oxygen gas, which is not adsorbed into the surface of ZMS comes out from adsorbed tower and collects in the surge vessel.

We are also dealing with sensor and gas analyzers for the following gases: oxygen, hydrogen, co and co2. These gas analyzers are in ready stock.

We offer tube ice plant. Parthe tube ice technology is specialised in designing and manufacturing everything from a single tube ice machine to a complete turnkey tube ice plant with an ice production capacity range of 5 tpd to 100 tpd or more. We have installed and started-up tube ice plants for chemical companies, concrete companies, food processing companies, fisheries, poultry-processing, meat plants etc.

The main ingredient of Nitrogen Plant is CMS (CARBON MOLECULER SIEVE) and CMS is having indefinite pores on the surface, which adsorb the molecules of Oxygen, Moisture and Unwanted gases from compressed air. Nitrogen gas, which is not adsorbed into the surface of CMS comes out from adsorbed tower and collects in the surge vessel.