Drier

Washing Tank

Press

Rotary Vacuum Filter

Rotary Vacuum Filter

Co

agu

lati

on

Tan

k La

tex

Ble

nd

Tan

k

Stri

pp

ing

Tow

er

Total Butadiene-

126.057 kg/hr

Total Styrene- 42.019

kg/hr

Dis

tilla

tio

n c

olu

mn

s

Polymerization Reactors (60% conversion, 5-10°C, 12 hrs)

Mixing Tank

Water- 302.536 kg/hr

Emulsifier = 8.404 kg Dodecyl mercaptan = 0.336 kg Cumene hydroperoxide = 0.286 kg FeSO4 = 0.029 kg EDTA- 0.101 kg

Fresh Styrene- 30.822

kg/hr

Fresh

Butadiene-

58.206 kg/hr

OTHER RAW

MATERIALS

WATER

BUTADIENE

STYRENE

Blo

w d

ow

n T

ank

287.86 kg/hr Latex

F = 67.23 kg/hr unreacted butadiene and styrene

Latex = 287.86 kg

Butadiene Recovered

D = 50.624 kg/hr

Butadiene-Free Latex

La = 304.479 kg/hr

Stea

m

Vb

= 9

2.44

2 kg

/hr

Styrene recovered = Va = 105.888 kg/hr ya = 0.127

Lb = 291.222 kg/hr xb = 0.012

287.87 kg 22% polymer solution

F = 138.889 kg dry solids

751.839 kg liquid

120.99 kg 15.8% by weight NaCl solution

375.

252

kg 3

.6%

by

wei

ght

H2S

O4

solu

tio

n

F = 138.889 kg dry solids/hr

75.139 kg liquid

1909 kg

liquid

F = 138.889 kg dry solids

1984 kg liquid

F = 138.889 kg dry solids

198.413 kg liquid

F = 138.889 kg dry solids

59.524 kg liquid

138.889 kg liquid

F = 138.889 kg dry solids/hr 0.698 kg liquid

Styrene (fresh and recycled), Butadiene ( fresh and recycled), water, together with other raw

materials ( emulsifier, dodecyl mercaptan, cumene hydroperoxide, FeSO4, and EDTA are sent to a mixing

tank from their respective storage areas. After the blending of the raw materials, the solution will be sent

to a series of polymerization reactors to allow 60 % polymerization for about 12 hours at 5-10C. The

resulting solution from the reactors which now includes latex, unreacted butadiene and unreacted styrene

are sent to a blow down tank for heating for the preparation for distillation of the latex.

The distillation column will seperate the unreacted butadiene from the latex and the unreacted

styrene. The butadiene rcovered from this process is sent back to the first process which will be used

again for another batch of production of the emulsion styrene butadiene rubber. The latex and the

unreacted styrene will undergo stripping in order to recover the unreacted styrene. Same with the

recovered butadiene from the distillation columns, the recovered styrene will be sent back to the first

process to be used again for the next batch of the production of the emusion styrene butadiene rubber.

After the stripping process, the resulting latex will be mixed and will undergo coagulation. In the

coagulation tank, the latex will be added with a base and an acid to allow coagulation. the resulting latex

from the coagulation tank will be sent to a rotary vacuum filter to remove excess liquids. After the

filtration process, the cake resulting from the filter will be washed and sent again to a rotary filter. After

the second filtration, the cake will be pressed and dried to remove the liquid present.