Manufacturing


Manufacturing process of ethanol used by Kiaan chemicals

Broadly speaking, processes for making alcohol by fermentation include steps for
1) Preparing the feedstock,
2) Fermenting simple sugars,
3) Alcohol recovery and often
4) Recovery of residual on-alcohol materials.
The feedstock may already contain sugar polymers such as cellulose, hemicelluloses or starch, which can be depolymerised to fermentable sugars. In brief, in this process the whole cereal, normally grains, corn (maize), is ground in a mill to a fine particle size and mixed with liquid, usually a mixture of water and backset
stillage. This slurry is then treated with a liquefying enzyme to hydrolyze the cereal to dextrin’s, which are oligosaccharides. The hydrolysis of starch with the liquefying enzyme, called “alfa-amylase, is helped along by cooking the mash at an appropriate temperature to break down the granular structure of the starch and cause it to gelatinize. Finally the dextrin’s produced in the cooking process are further hydrolyzed to glucose in a saccharification process using the exoenzyme glucoamylase and another enzyme (Rhizozyme.) that may be added to the yeast propagation tank or the fermenter.

Storage

Product streams from the various sections are initially collected in respective daily receivers and then transferred to bulk storage tanks. Separate vent condenser is provided for each bulk storage tank. Capacity of Storage tanks will be decided based on location requirements


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