Cradle to Consumer
Identity ID
263b4e0e-3786-4622-a0f7-3f92e3dd1e8f
Materials
Associated ID
22f5b497-3b92-4162-b9c6-2ca5bb6d88ad
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. Chlorinated polyethylene is widely used in fields such as plastic modification, rubber products, coatings, adhesives, wires and cables, flame-retardant materials and anti-corrosion materials. Chlorinated polyethylene is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, waste and atmospheric emissions of the production process, in which the waste gas treatment process is included within the dataset boundary, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include raw material preparation, chlorination, de-acidification, neutralisation, dealkalisation, centrifugal dehydration, drying and blending.
Activity Description
The production activities of this product include raw material preparation, chlorination, deacidification, neutralization, dealkalization, centrifugal dehydration, drying and blending.
Process Description
Chlorinated polyethylene (CPE), CAS number 63231-66-3, is an elastomeric material produced by chlorinating polyethylene. It is generally a white or pale-yellow, odorless powder that combines the rigidity of plastics with the elasticity of rubber. It is insoluble in water, has good resistance to organic solvents, and dissolves only in a limited number of aromatic solvents such as toluene and xylene. It is highly compatible with polyvinyl chloride (PVC), polyethylene, polypropylene, and other polymers. It is chemically stable and exhibits excellent acid, alkali, oxidation, ultraviolet, and weather resistance, together with good flame retardancy, aging resistance, and low-temperature flexibility. It is mainly used to modify plastics by improving impact strength and toughness and in rubber products as a partial substitute for synthetic rubber to enhance weather resistance and processability. It is also used as a film-forming or toughening component in anticorrosive and waterproof coatings and adhesives, as cable-sheathing material, and in flame-retardant materials, automotive components, and chemical-resistant linings, particularly where weather resistance, impact resistance, and flame retardancy are required.
Time period
2003
2026
Geography
China,Qinghai
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The aqueous suspension process is a mainstream technology for producing chlorinated polyethylene (CPE). High-density polyethylene (HDPE) is chlorinated in an aqueous medium; the process has relatively low cost, good safety, and is readily scalable. The CPE unit comprises raw-material preparation, chlorination, acid removal, neutralization, alkali removal, centrifugal dewatering, drying, and blending:
1. Raw-material preparation: HDPE is weighed and charged to a preparation tank together with process water, an emulsifier, and a dispersant. After thorough mixing and sealing, process air is used to transfer the slurry to the chlorination reactor.
2. Chlorination: Chlorine is introduced while the specified reactor temperature and pressure are maintained. Chlorine feed is stopped when the required chlorine dosage is reached, completing the reaction.
3. Acid removal: Hydrochloric acid on the surface of CPE particles is removed by water washing.
4. Neutralization: NaOH is added to the neutralization vessel, with the medium maintained at pH 11–12 and 85–90°C until the neutralization endpoint is reached.
5. Alkali removal: Hot water at approximately 60°C is added to wash out excess NaOH until the pH reaches 7–8. After an appropriate amount of water is added, compressed air transfers the slurry to the holding tank; wash water passes through the filter head and is discharged to the alkaline-water tank.
6. Centrifugal dewatering, drying, and blending.