The alcohol production process consists of the following steps:

- The mixed juice extracted from the three mills is sent to a tank where does the division of the broth to the process of sugar and alcohol.

- The broth sent to the process of alcohol after leaving the buffer tank, passes through a sifting process in static sieves to remove the suspended solids (bagacilho). Then the juice is pumped to a heat exchanger - regenerative plate heat (2) AX 30, where it is heated to 30 ° C to 65 ° C in counterflow with the clarified juice / pre - evaporated, ie, while the broth mixture is heated, clarified juice / pre-evaporated is cooled proportionately.

- The broth mixture heated to 65 ° C and goes to the dosing process, where the juice goes through a process of correction of pH, increasing it from 5.5 to 6.8.

- After pH correction, the stock is now called mixed broth dosed, which is sent to eight horizontal heaters, where it is heated to 65 ° C to 105 º C. The broth at 105 ° C undergoes a flasheamento the ball flash to remove the air inside and goes to the decanters (2 decanters with capacity of 850m3 each).

- In the decanter, the juice undergoes the process of clarification, where separation occurs, first of clarified juice and the other side of the mud.

- The sludge goes to a buffer tank sludge and then is sent to the rotary vacuum filters, where it gives the broth filtrate and the cake.

- The broth filtrate is recycled in the process, more specifically in strength, recovering the sugar present in the sludge, the cake is sent to the plantation to serve as fertilizer.

Fermentation:

- Must prepared is sent to the fermentation vats. There are 28 vats of 250 m3 each. In vats, the wine is added on the foot tub ready.

Preparation of foot-tubs:

- The vats of fermented wine (wine after fermentation + yeast) undergoes a spin in order to reuse the yeast used in fermentation.

- Wine delevedurado is sent to distillation.

- The yeast cream is sent to a treatment with the addition of cold water at a ratio of two parts water by yeast, the addition of H2SO2 to pH = 2.2 and stirring for 3 hours.

- This treatment is done with tanks of 100 m3 each. There are 4 tanks for this treatment of yeast. Then the foot tub is sent to the fermentation vat.

- After this, starts to feed on the wine vat to the filling. There must be a filling time of approximately 3 h. After the vat is full, there is a delay of 4 to 5 hours for fermentation to take place, or so the sugar turns into alcohol and CO2.

- After this fermentation, the vat is ready to suffer centrifugation of wine and start a new cycle.

Columns:

- Wine delevedurado is sent boxes of food on the top floor of the distillery. Hence, by gravity feed the distillation columns.

- The wine box passes through the condenser, which condenses the alcohol leaves the top of column B. It is heated to 60 ° C. Next, pass the heat exchangers, where heat exchange with the stillage, the wine is heated to 92 C and vinasse cooled to 85 º C K.

- The wine warmed to 92 C feeds the column A1, which will undergo a concentration of manufacturing beverage, while inside the column, there will be an increase in alcohol-rich vapors and a drop of liquid condensate low in alcohol. This liquid low in alcohol (stillage) to reach the bottom of column A, is removed.

- Of the alcohol-rich vapors, part feeds the D column purification and partly feeds the column B in the form of phlegm, whose concentration is 50% alcohol by volume and 50% in water + waste consisting of higher alcohols, aldehydes, esters, etc..

- The mists fall from the top of column D are condensed in two condensers (R and R1), using water as coolant. Steam condensate in R and R1, part flows back into column D, and part is removed from second to alcohol as tanking.

- The phlegm that was fed in column B1 undergo a process of purification and concentration, the top of column B leave the vapors of alcohol 94 º GL hydrated. At the bottom of a watery fluid exits B1-free alcohol that is called flegmass. This flegmass returns for the preparation of yeast.

- The alcohol vapors leaving the column B are condensed in condenser E, E1 and E2, and E in the coolant is the wine that will feed the column. Capacitors in E1 and E2 the refrigerant is water.

- All that alcohol vapor condensate returned as reflux to column B and a little below the entrance of reflux is made of hydrated alcohol withdrawal. The alcohol goes into a tank meter and then is pumped to storage tanks.

- In column B1 are taken to withdraw from high oil (esters, acetates) and base oils (fusel oil). These withdrawals are a resfriadeira TQO2 cooled and then sent to the decanter of fusel oil. Settling out of this two products: oil high, which is mixed with alcohol, second and fusel oil, which is removed and stored.

Production of ethanol

The production of anhydrous ethanol consists of the following steps:

- The hydrated alcohol, withdrawn from column B to produce anhydrous alcohol, which passes through the valve 2 is opened and valve 1 which is closed.

- After passing through valve 2, goes to a heated alcohol QO3 and then feeds the column C. This column is the column dehydrating.

- This column receives power from hydrous ethanol and cyclohexane. Because the addition of cyclohexane formed a mixture of cyclohexane, water and ethanol. This azeotropic mixture is removed from the top of the column C.

- The vapors leaving the column C (azeotropic mixture) are sent to two capacitors called H and H1, which are cooled with water. All the condensate is mixed with pure cyclohexane (replacement) from the box W1.

- Then get the condensate from the condenser I, who works on the column P. All this condensate is sent to a decanter of cyclohexane, which is on top of the column C.

- In settling, separation occurs in two layers, with the top, rich in cyclohexane, returns to the C column as reflux.

- The lower layer rich in water and low in cyclohexane, is sent to the column recovery of cyclohexane P. This column provides water as a product of substance and the vapors leaving the top rich in cyclohexane which will be condensed in the condenser I.

- That I condenser, a section follows the line 17 entering the column C and the other part follows the line 22 and enter the P column as reflux.

- Anhydrous alcohol leaving the bottom of column C is sent to resfriadeira J, then, is sent to the tank gauge TQO2. After that is sent to storage tanks.

- Anhydrous alcohol - d = 0.79 kg / l at 20 ° C, ie 100 liters of anhydrous alcohol, weighing 79 kg to 20 º C