Cradle to Consumer
Identity ID
32fb0d17-65be-4862-9c43-e878ecc24d76
Materials
Associated ID
0d606830-07c4-4e6f-842a-7c4971c5b7ae
Included activities starts
Included activities ends
Description
This is a market dataset representing the consumption market in the region. It includes transportation of the product from the factory gate to consumption, with transport services calculated according to the regional transportation conditions for the product.
Activity Description
Polyvinyl chloride (PVC) is produced via the calcium carbide-acetylene method and suspended polymerization. Production activities include the acetylene section, vinyl chloride section, sulfuric acid purification, and polyvinyl chloride section. The specific process flow includes calcium carbide crushing, acetylene generation, vinyl chloride synthesis, compression and distillation, PVC polymerization, PVC slurry stripping, PVC dehydration, and drying and packaging.
Process Description
Polyvinyl chloride (PVC) resin is a plastic material with good chemical stability, resistance to corrosion from acids, alkalis, and salts, self-extinguishing flame retardancy, and excellent electrical insulation. It is suitable for environments below 70°C and can be processed using methods such as injection molding and extrusion. However, its heat resistance and weatherability are relatively poor; in particular, it tends to age under prolonged exposure to light. Therefore, aging inhibitors must be added to enhance its performance.
Time period
2017
2026
Geography
China,Zhejiang
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The calcium carbide acetylene process primarily involves generating acetylene gas by reacting calcium carbide with water. The acetylene gas is then mixed with hydrogen chloride and, in a converter, undergoes catalytic reaction at temperatures of 100--190 °C to produce vinyl chloride. After purification, the vinyl chloride enters a polymerization reactor, where initiators, dispersion agents and other additives are added to initiate polymerization at 48--62 °C to produce polyvinyl chloride (PVC). The product is further processed through centrifugal separation, drying, sieving and packaging to obtain finished PVC resin.