1. The document describes the production process of chlorinated polyvinyl chloride (CPVC) through chlorination of solid PVC resin using chlorine gas. 2. Key steps include mixing solid PVC resin with water to form a slurry, feeding the slurry into a chlorination reactor for chlorination at high temperature, and centrifuging the product to obtain a CPVC slurry. 3. The CPVC slurry then undergoes drying in a rotary dryer to produce dry CPVC pellets with 0.1% water content.

1. Production of Chlorinated Polyvinyl Chloride (CPVC) HCl
H2O
Cl2 25 Kg Bags 16 Waste Liquor 11
NaHCO3
5
H2O 15
Solid PVC TC
Resin Surge tank Fluid
1 Pressure
Reliefe Pipe
Chemical initiator tank
Screw Conveyor
11
Fluid
Reactor
FC Centrifugate T = 21°C
Water 2 TC 1 TC NaHCO3
10% NaHCO3
Waste Liquor
8 67-68 %wt Feed Drum Neutralizer
TC 2 Cl CPVC
Make up Pump 12
14 13
Stired tank FC FFI NaHCO3
H2O
3 PVC Resin
25°C Slurry 7 90% CPVC
Heater 17
Slurry 10% 6 10% HCl
wt PVC Chlorination reactor 9 T=60 °C
Pump
FC PI
Absorver Screw Conveyor
34 Reactor Preheater
10
Pressure
Reliefe Pipe
Flare
Chlorine
35 4 Water
vaporizer TC
PC
LI Heat Exchanger
36
TC
PC
Combustion Gas
T=250 °C
FC
37 Steam Product Centrifuge
PI
2 atm 33 PI
21 18 Resine
Chlorine 20 15% CPVC Slurry
Neutralizer
T=90°C
22°C (I) 10 % wt
TI Cooling 19 PH=7
90% CPVC
10% H2O
38 Na Cl %OHNa
Natural Gas (Mol)
92,5% Metano NaOH Na2CO3
30 4,8% Etano
P-135 Recycle Solution 39 40
2,7% Propano
31 NaOH
32
Hot dry Air Waste NaOH
Air 29 Treatment LC
26 Rotary Dryer
Feed Drum 43
27 28 22
120°C
Air 110°C 1.3 atm
42
90 % Air Furnance 25 20% Relative Humidity
10% Air Atmosphere 41 Pump
24 99% DRY CPVC 23
Make up Tank
(NaCH)
Pump Industrial and Comercial Engineering
0.1% WATER 10 wt %
Course : Industrial Technology