5500 TPD Cane Sugar Mill

Description

Used approximately 5,500 tpd cane sugar mill, including the main following machinery and equipment:

a) Patio, handling and preparation of cane:
1.) 2 scales, 100 ft long with capacity for 100 TM.

2.) 2 shank tables, 22 ft with thread type cranes on rails.

3.) Driver slatted steel, 78".

4.) Leveller with 40 blades powered by a 100 hp electric motor.

5.) Mincer with 54 helical blades with light ¾" driver, driven at 700 rpm by an 800 hp electric motor with respective reducer.

6.) Shredder with 48 hammers, driven at 900 rpm by a 2,000 hp electric motor with respective reducer.

7.) Conductor rubber belt, 72" and electromagnet.

8.) Four 6-roll mills, 37" x 78" Elliot powered by 2DYR 1,000 hp turbines. Transmissions prepared for 1,000 hp. Farval lubrication systems for bearings and Lincoln crown.

9.) Intermediate drivers with steel rakes, discharging to Donnelly type chifles.

10.) Rotary-type filter screen or trommel, BAS Engineering brand, model T65x156, for casting primary juice.

b) Steam generation:
1.) Boiler No. 1 Bigelow, producing 100,000 pounds of steam per hour at 300 psig and 480°F superheated, with Dennis Detrick type furnaces to facilitate start-ups with firewood. The fan has a run armature shaft and can be driven by a 200 hp Worthington turbine and an electric motor. The forced draft fan is driven by a 100 hp electric motor.

2.) Boiler No. 2 Babcock & Wilcox repowered with engineering HRSG of Mexico; a second repowering took place in 2012. Produces 200,000 lbs of steam per hour at 600 psig, 750°F superheated, currently operating at 450 psig to supply steam to current turbogenerators. This boiler has an inclined pin-hole type grate. The two forced draft fans are driven by 150 hp electric motors. The induced draft fan, brand Armee-Babcock, has a capacity of 265,000 cubic feet of air per minute and is driven by a 1,000 hp turbine with respective reducer.

3.) Both boilers have wet scrubbers to control emissions to the environment.

4.) Fischer brand tempering system to condition the 250 psi steam turbines, requiring mills and several movements in boilers.

c) Power generation and electrical installations:
1.) Two General Electric backpressure turbogenerators of 5,000 kW at 4,160 V each. These turbines operate nominally at 415 psig steam to 715ºF, and 400 psig to 625ºF with vapour pressures of 35 psig and exhaust 10 psig respectively.

2.) The electricity distribution system within the factory at 4,160 V is underground. It includes a busbar with respective switches (switchgear) and a number of transformers with secondaries at 480 V, rated at 1,500 kVA; four at 1,000 kVA; three located in different sections.

3.) To complete, the connection line at 13,800 V has a bank of transformers of 750 kW and Rush.

d) Clarification:
1.) Two stainless steel eductor sulfation units of diluted juice.

2.) Three primary juice heaters, alkalised of 5,543, 2,178, and 2,065 square feet.

3.) Four secondary heaters alkalising juice: two of 1,492 square feet and two of 1,345 square feet.

4.) One SRI clarifier type.

5.) Four rotary vacuum filters for cachaça, brand Dorr Oliver, two 8 ft x 16 ft and one 8 ft x 12 ft; total filtration area of 1,100 square feet. The filter cake is transported via a 24" wide conductive rubber belt discharge chute which also receives ashes.

(5) Evaporators

(2) Vacuum pans

(6) Centrifuges