Cradle to Consumer
Identity ID
a2b1603e-ec59-4601-98cf-c97befe95162
Materials
Associated ID
555a8ce7-0b91-4552-a91e-51109fd58e81
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
The process flow for ethylene production via the ethane pathway based on natural gas includes raw material preheating, cracking, quenching, decoking, compression, caustic washing, front-end de-ethanization, acetylene hydrogenation, cold separation, and distillation.
Process Description
Ethylene is an organic substance with the CAS number: 000074-85-1. Its IUPAC name is ethylene, and its molecular formula is C2H4. Under normal temperature and pressure, it is a colorless gas with a sweet odor. It is modeled as a pure substance. Modeling this substance in solution requires the user to add their chosen solvent into the model. At the consumer level, it is used in the following products: fuels. In industrial settings, this substance is used to manufacture products in the following sectors: polymers and plastics, fuels, and laboratory chemicals.
Time period
2019
2026
Geography
China,Yunnan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The NETE process model for ethylene production via a natural gas-based ethane route employs high-temperature steam cracking technology for ethane-to-ethylene conversion. The cracked products are separated using a front-end ethane removal with selective hydrogenation process to produce ethylene. The cracking process involves the decomposition of ethane into olefins or alkanes under high temperature and in the absence of air. Concurrently, polymerization and condensation reactions occur, converting some hydrocarbons into larger molecules. The ethylene unit consists of the pyrolysis furnace section (including feed preheating and furnace pyrolysis), quench section (quench stage, decoking system, process water stripping, and dilution steam), compression and caustic washing section (compression stage, caustic washing stage, front-end ethane removal, and acetylene hydrogenation), cold separation section (cryogenic system, de-methanizer, and methanation reaction), ethylene distillation and heat pump section (heat pump unit, propylene refrigeration unit), waste caustic treatment section (waste caustic hydrocarbon removal, waste caustic oxidation, waste caustic neutralization), flare system, and utility systems.