SUGAR MILL PROCESS PRESENTATION by Aziz jamali 03462243209

BY AZIZ JAMALIINSTRUMENT ENGINEERKHAIR PUR SUGER MILLS 03462243209

SUGAR MILL PROCESS PRESENTATION.

DEFINITION OF SUGAR,

Sugar is an important source of food energy. During digestion, all food carbohydrates (starches and sugars) break down into single molecule sugars. These sugars are absorbed from the intestine into the blood stream and travel to the cells, where they are used to provide energy for cellular functions.

SUGAR MILLS IN PAKISTAN .Punjab, 45 sugar mills

Sindh, 38 sugar mills

Khyber Pakhtunkhwa ( K P K ) , 07 SUGAR MILLS

Formula Sugar C12H22O11

What is the formula for a simple sugar?

Simple sugars are carbohydrates. Glucose and fructose are monosaccharide's and sucrose is a disaccharide of the two combined with a bond. Glucose and fructose have the same molecular formula (C6H12O6) but glucose has a six member ring and fructose has a five member ring structure.

1. Cane handling and preparation

Sugar canes Un load for crushing which are then fed to the milling tandem for efficient juice extraction .

2. Milling (Juice Extraction)

The cane shall pass through the milling tandem (consisting of 4 mills) for extraction of juice. The cane is conveyed between mills by rake elevators. Each mill is driven by hydraulic drives driven by hydro-motors. (addition of water to the crush for better extraction of juice)

ROLLER FOR CANE CRUSHING

AFTER CANE CRUSHINGDIVIDED INTO TWO PORTION

BAGASSE&

JUICE

Bagasse

from the last mill as a primary fuel source for sugar mills.

bagasse conveyer to boiler house ,Boiler house generate steam For power house Turbine & Other section.Power house generate power for lighting & drive motors.

Bagasse,

3 . Juice Clarification

Sugar cane juice has a pH of about 4.0 to 4.5 which is quite acidic. Calcium hydroxide, also known as Milk of lime or limewater,

4. Evaporationcrystallisation, a process where the juice is heated and evaporated until sugar crystallises spontaneously.

5 . Pan Boiling

The sulphited syrup is pumped into pans for crystallization. The process of crystallization initiated in pans is completed in the crystallizers. After mother liquor is exhausted to the optimum level i.e. maximum sugar from mother liquor has been converted into sugar crystals, the two constituents are separated in the centrifugal machine. The residual mother liquor is termed as molasses, a bye product used for producing Ethanol

6. Sugar Conveying, Drying & Packaging

The Sugar Crystals recovered from Centrifugal machines are conveyed, dried and cooled by multistoried hoppers by passing hot and cold air. Thereafter sugar is screened in a grader and packed as per the different grades.