Process Process Supporting Unit

6 liquid cake washing results. Separator S-02 separates air and fluid that comes out from filtrate that comes out of RDF. The resulting filtrate directly channeled toward the UPL. Cake that has washed next to the belt conveyor BC-01, to be fed to the rotary dryer RD- 01 and to be dried by heating air from the heat exchanger HE-01. Rotary dryer of precipitated silica, it is brought to Belt Conveyor BC-02 to be transported to the BE-01, then Separating solids dust from the air that comes out of rotary drier fed by the cyclone separator CS-01 to separate entrained dust, the dust will fall down towards BE-02, Bucket Elevator BE-01, heading Hoper H-01. From Hopper H-01 to the ball mill BM-01 which serves to destroy the product in order to obtain the desired product, 325 mesh. From the ball mill BM- 01, the product carried by Bucket Elevator BE-02 to the vibrating screen SCr-01. It serves to separate products that do not meet the size. Products that do not meet the size will be recycledfed again towards the ball mill BM through belt conveyor BC-03. Next, for products that fit the size is fed head to Silo. It serves to accommodate products of fine silicate solids that come out of screen. Furthermore, Bucket elevators BE-03 to BIN transport the products B-01 to accommodate the solid silicate products before packing process.

D. Process

Equipment Specifications

1. Tank of Sodium

silicate  Code : T-01  Type of tank : Upright cylinder with a conical roof  Amount : 1  Function: Saving sodium silicate for 7 days Specification  Operational condition : 30 o C in 1 atm  Construction Materials : Carbon steel 7  Volume of Tank : 2224 m 3  Height of Tank: 40 ft  Diameter of Tank: 50 ft  Thick of head : 8 ft

2. Tank of H

2 SO 4 T-02  Code : T-02  Type of tank : Upright cylinder with a conical roof  Amount : 1  Function : Saving H 2 SO 4 for 7 days Specification  Operational condition : 30 o C  Construction Materials : Stainless steel  Volume of Tank : 320.3 m 3  Height of Tank :16 ft  Diameter of Tank: 30 ft  Thick of head : 8 ft

3. Reactor 1

 Code : R-01  Function: Places to react between sodium silicate and sulphuric acid. It is to form precipitated silica.  Type : RATB  Conversion of Reactor : 93.65 Operational condition  Temperature : 90 o C  Pressure : 1 atm Specification  Construction Material : Stainless steel SA 167 tipe 316  ID : 83.625 in  OD : 84 in  Height of Reactor : 3.87 m  Thick of shell : 0.16 in  Thick of head : 0.19 in  Type of Mixer : flat blade turbine 4 baffle  Speed of Mixer: 140 rpm  Motor power: 18.99 0.87= 21.83 Hp  Diameter of impeller : 0.177 m  Depth of baffle : 0.177 m  Amount : 2 Coil Cooler  U C : 436.02 Btuj.ft².°F  U D : 190.0 Btuj.ft².°F  Heat Transfer Area : 428.25 ft² Equipment Heat Transfer  Amount coil : 2  Kind : coil  Lengtht of Coil 1 : 217.8 ft  Lengtht of Coi 2 : 178.2 ft  Heat Transfer Area 1 : 199.55 ft²  Heat Transfer Area 2 : 163.27 ft²  Volume of coil : 31.227 ft³  Height of coil : 2.689 m 8

D. Process Supporting Unit

Laboratory a. Water Process Total water that is used for the process: 9249 kghour b. Steam Supply Unit Steam requirement =1564.0 kghour c. Power Supply Units Total=834.01 kW d. Fuel Supply Unit The total volume of diesel fuel needed = 136.1 lj e. Generator Generator efficiency = 542 kW

E. Conclusion

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