VEGETABLE OIL CHEMICAL AND PHYSICAL REFINING

Vegetable oil refining is a speciality of MECTECH.

Refining of Edible Oil, Continuous degumming, neutralising & washing

The inherent harmful factors for human consumption like free fatty acids (FFA), gums, sediments, odoriferous and colouring materials present in crude oils are removed completely to make the oil edible.

MECTECH takes special care in all the stages and after undergoing the process of neutralisation, bleaching and deodorisation, the oil is safe and fit for human intake.

Continuous Bleaching

Salient features:

»	MECTECH's unique design of bleacher requires no mechanical agitation and bleaching is carried out under optimum conditions of moisture content to achieve perfect results. This gives saving in power consumption for the system.
»	Mechanically agitated bleacher has a tendency to affect the quality of oil due to leakages from gland system. It also involves maintenance as well as wear and tear cost. Our bleacher being without mechanical agitation is maintenance free.
»	Our unique design of bleacher keeps bleaching earth under suspension thereby avoiding dead areas. This results in lower consumption of bleaching earth.
»	Since the bleacing process is carried out under controlled parameters, better and consistent quality of resultant oil is guaranteed.

Physical Refining

This is employed mainly for high FFA oils lik Plam Oil and Rice Bran Oil. Physical refining is carried out in two steps i.e.

1) Pre-treatment & Bleaching
2) Deacidification/Deodorization

PRE-TREATMENT & BLEACHING

The aim of Pre-treatment & Bleaching is to remove minor constituents namely phospodites, heavy metals and other oxidative components prior to Deacidification/ Deodorization.

Specially designed Pre-treatment & Bleaching by MECTECH is cost effective and ensures perfect results.

DEACIDIFICATION / DEODORIZATION

Equipments designed by MECTECH ensures deacidification by distillation of free fatty acids combined with partial or complete deodorization.

Salient features of MECTECH's Deacidification/Deodorization System:

»	The Deaeration and Pre-heating is gradual and methodical so that all the oil comes in contact with this sparging system at the free surface exposed to vacuum.
»	An additional top heating tray is provided in the Deacidifier/Deodorizer to compensate the unavoidable oil cooling of about 8'C due to evaporation of fatty acids.
»	Perfect deodorization is accomplished by providing large free surfacing area contact between oil and stripping steam at an absolute pressure of 2 m bar. This results in furnishing oil surface layer of numerous bubbles having 5-10 mm diameter. These small bubbles burst and they discharge the water vapour saturated with distilled fatty acids and the odoriferous compounds. These ascending vapours are immediately and freely taken out into lateral ducts through large section opening provided in top of each stripping tray.
»	This ensures virtually no pressure drop from top to the bottom tray. Most efficiently designed oil to oil heat exchanger fitted in the last tray of Deodorizer ensures minimum heat energy requirement. Elaborate and efficient design of fatty acid scrabbling recovery system ensures virtually no carry over of fatty acids into barometric condenser water.

Edible Oil Refinery, Edible Oil Refining, Edible Oil Plants