Cradle to Consumer
Identity ID
17158cdd-d078-4449-b98c-c35a6710f536
Materials
Associated ID
f5b05425-3646-4ad1-bd22-0cfe3d8c9d01
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, with the transport service calculated according to the transport situation of this product in the region. High-purity isobutylene is mainly used to produce products such as MMA, butyl rubber, polyisobutylene, antioxidants and pharmaceutical intermediates. The dataset includes the main raw and auxiliary materials, energy use, emissions and waste treatment in the production process, but does not include infrastructure such as the manufacture of production equipment and the construction of plant buildings; the data inventory is formed by merging data from multiple sources. This product adopts the MTBE (methyl tert-butyl ether) cracking process, and its production activities include process steps such as feedstock preheating and vaporization, catalytic cracking, and separation and refining.
Activity Description
This product adopts MTBE (methyl tert-butyl ether) cracking process, and its production activities include raw material preheating and vaporization, catalytic cracking, separation and refining and other processes.
Process Description
The CAS number of isobutylene is 115-11-7 and it is a colorless gas. Melting point -140.3℃, mixing point -6.9℃, relative density 0.5879 (25/4℃), flash point -76℃. Easily soluble in alcohol, ether and sulfuric acid, insoluble in water. Easy to liquefy and polymerize. Isobutylene is an important chemical raw material, mainly used to prepare butyl rubber, polyisobutylene, methacrylonitrile, antioxidants, tert-butylphenol, tert-butyl ether, etc.
Time period
2021
2026
Geography
China,Chongqing
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The process of producing isobutylene from MTBE (methyl tert-butyl ether) is essentially the reverse process of the MTBE synthesis reaction, that is, MTBE cracking. This process is mainly used to extract isobutylene with high purity from mixed carbon four fractions, and is one of the current mainstream isobutylene production methods. After the MTBE raw material is vaporized, it is catalytically cracked under the action of a solid acid catalyst to generate a mixture of isobutylene and methanol. The high-purity isobutylene product is then separated through water washing, distillation and other steps, while methanol and unreacted MTBE are recovered for recycling.