Cradle to Consumer
Identity ID
1b29eb2a-ddef-45ea-b255-a8a0cf75c8da
Materials
Associated ID
d3326c7d-91f0-4e97-8984-f576a0500577
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. Trimellitic anhydride is widely used in fields such as resin synthesis, plasticiser production, high-temperature-resistant electronic materials, coatings and inks, pharmaceutical intermediates and plastic modifiers. Trimellitic anhydride 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 oxidation, crystallisation, anhydride formation, and vacuum rectification.
Activity Description
The production activities of this product include oxidation, crystallization, anhydride formation, vacuum distillation and other processes.
Process Description
The chemical formula of trimellitic anhydride is C9H4O5, CAS number 552-30-7. It is usually white to light yellow needle-like crystals or powder, odorless, with a melting point of about 168°C and a boiling point of about 397°C. It is easy to sublimate. Slightly soluble in cold water, easily soluble in hot water and hydrolyzed to form trimellitic acid. It is also miscible with organic solvents such as ethanol, ether, acetone, and aromatic hydrocarbons. It has active chemical properties and has the typical reaction characteristics of acid anhydrides. It can undergo esterification and amidation reactions with alcohols, amines, hydroxyl groups, etc. It has good thermal stability and is not easy to decompose at high temperatures. Industrially, it is mainly used in resin synthesis (as a core monomer for high-temperature resistant coatings, adhesives, composite materials), plasticizer production (preparation of trimellitate plasticizers); also used in electronic materials (preparation of high-temperature resistant insulation materials, electronic packaging materials), Coatings and inks (as curing agents and modifiers to improve the high temperature resistance, corrosion resistance and adhesion of coatings), can also be used in the synthesis of pharmaceutical intermediates, plastic modifiers, and as key raw materials in the manufacturing of composite materials in high-end fields such as aerospace and automobiles.
Time period
2015
2026
Geography
China,Yunnan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The liquid-phase air oxidation method is an advanced mainstream technology for the production of trimellitic anhydride. It is produced by air oxidation of trimellitic anhydride in the liquid phase. The process is clean and the product purity is high. The flake products are easy to store and transport. It accounts for more than 90% of the domestic trimellitic anhydride market. This data set represents this mainstream technology: Trimethylbenzene in glacial acetic acid solvent, under the action of catalyst (cobalt acetate, manganese acetate tetrabromoethane) and under the pressure conditions of 220℃-230℃, 2.2MPa-2.3MPa, and air Oxygen is oxidized in the oxidation tower to produce trimellitic acid. The trimellitic acid is crystallized in the crystallization kettle and transferred to the anhydride-forming kettle for heating (230°C-240°C), melting and dehydration to form anhydride. The crude trimellitic anhydride is rectified under reduced pressure to obtain the product trimellitic anhydride. The waste heat is recovered to produce self-produced steam, which is then used to concentrate and recycle acetic acid.