NRDC Technology offer-GLYCOL BASED ANTIFREEZE COOLANT

PLANT PARAMETERS
Capacity, KL/Yr	600
Number of shifts	1
Working days / Yr	300
Land Reqd. , m²	150
Covered Area, m2	75
MANPOWER
Managerial	3
Skilled	5
Unskilled	10
RAW MATERIAL (Tonne per KL of product)
Ethanediol	0.42
Inorganic nitrice	0.11
Sod. benzoate	0.042
Sol. aza compound	0.088
Green dye	0.021
UTILITIES (Per KL of product)
Power, KwH	123
Water, KL	1.50
PLANT & MACHINERY
Primary mixers	Filter press
Settling tanks	Storage tanks
Secondary mixers

Development of Glycol based coolants have brought a breakthrough in the technology of engine cooling systems in vehicles operating in low temperature conditions. A new Glycol based concentrated fluid , named as DAFC has been developed , which, in specified dilution’s with water,can be used an efficient radiator coolant for vehicles like cars, trucks, heavy vehicles and auxiliary power units operating in the plains as well as at temperature upto - 400 c. DAFC with 30% dilution can be used at temperatures upto 100 c . It can also be used as a shock absorbing fluid in the recoil system of large calibre guns. 50% DAFC can be used in the above mentioned engine cooling system operating in still low temperature weather conditions and has been recommended for use in the defence services.

PROCESS

Manufacturing process involves following major steps:

Primary mixing
Settling
Secondary mixing
Filtration
Storage & Packing

The various ingredients are dissolved in 15 to 20 parts of water alongwith 0.1 to 0.2 parts inorganic nitrite and 50 ppm soluble dye (fluorescence type yellowish green dye) by constant stirring and raising the temperature upto about 50^oC.40-50 parts of sodium salt of benzoic acid and one twentieth part of soluble aza compound are also added to one part of inorganic nitrice.

The remaining parts of water and entire quantity of glycol are mixed to the above solution by constant stirring for 30 minutes and then the solution so formed is allowed to settle.

A paste of fluorescent dye is finaly mixed with glycol-water mixture follwed by stirring for 15 minutes and then the solution is filtered throughhorizontal plate and frame type filter press. The physico chemical parameters are measured before filling the product in HDPE jerricans.

NRDC
National Research Development Corporation, a Government of India Enterprise, is a premier technology transfer Corporation with four decades of experience. It has helped establish over one thousand projects in the small and medium scale sector. The supply of technologies and services to entrepreneurs extend both in the developing and developed countries like USA, Germany, Malaysia , Burma , Nepal, Senegal, Madagascar, Indonesia Philippines, Vietnam, Lanka, Kenya, Brazil, Bangladesh and Egypt.