Cradle to Consumer
Identity ID
9a9fc720-a26d-48e3-bf2c-2cb49383f9cd
Materials
Associated ID
3750258f-a132-40eb-98c1-9aca803fe345
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. Trioctyl trimellitate is widely used in fields such as plastic products, medical devices, coatings and adhesives, and rubber processing. Trioctyl trimellitate 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, 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 esterification reaction, de-alcoholisation, neutralisation and water washing, stripping and dehydration, and filtration.
Activity Description
The production activities of this product include esterification reaction, dealcoholization, neutralization and water washing, stripping and dehydration, filtration and other processes.
Process Description
Trioctyl trimellitate (TOTM), also known as tris(2-ethylhexyl) trimellitate, has the chemical formula C33H54O6 and CAS number 3319-31-1. It is generally a colorless to pale-yellow transparent oily liquid that is odorless, has extremely low volatility, and exhibits excellent thermal stability. It is insoluble in water, readily soluble in organic solvents such as ethanol, diethyl ether, and aromatic hydrocarbons, and highly compatible with polymeric materials such as polyvinyl chloride (PVC), polyurethane, and cellulose. It is chemically stable, resistant to hydrolysis, aging, and extraction, and does not readily decompose at high temperatures. With a flash point of approximately 240°C or higher, it is a high-temperature-resistant, environmentally preferable plasticizer that contains no phthalates. It is mainly used as a primary plasticizer in PVC products intended for high-temperature service and in medical devices. It is also used as a heat-resistant plasticizing component in coatings and adhesives, as a rubber softener, and in the manufacture of heat-resistant films, pipes, seals, and other products requiring heat resistance, low volatility, and long service life.
Time period
2014
2026
Geography
China,Zhejiang
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The esterification method is the core mainstream technology for the production of trioctyl trimellitate. It is produced through the esterification reaction of trimellitic anhydride and isooctyl alcohol. The process is mature and the product has excellent heat resistance and weather resistance. It accounts for more than 85% of the domestic heat-resistant plasticizer market segment. This data set represents this mainstream technology:
1. Esterification reaction: First, pump octanol into the esterification kettle, add trimellitic anhydride into the esterification kettle, then start to use thermal oil to heat up, add a certain amount of catalyst titanate, and React at 200-220°C until the esterification is completed. The generated water and octanol pass through the esterification tower and condenser, and then go to the oil-water separation tank. The separated octanol is returned to the reaction kettle with a reflux pump to continue the reaction. The separated water is used for neutralization and washing of the refining kettle.
2. Dealcoholization: After the reaction, the temperature of the esterification kettle is about 200-220°C, which is higher than the boiling point of octanol. After the gaseous octanol passes through the condenser, the vacuum pump pumps out 90% of the excess alcohol into the oil-water separation tank.
3. Neutralization and water washing: The dealcoholized crude TOTM is transferred to the refining kettle by vacuum and cooled to 100°C. The alkali liquid preparation tank provides 10% liquid alkali for neutralization. The water separated from the oil-water separation tank and the gas-liquid separation tank is then used to generate water washing wastewater. The water washing wastewater is discharged into the wastewater intermediate tank (the wastewater intermediate tank will produce waste gas). After the oil and water are separated, it is sent to the sewage treatment tank.
4. Stripping and dehydration: After washing with water, heat the crude product to 160-180°C, use steam to pump out the excess octanol and water in the crude product with a vacuum pump, and reuse the octanol. The water flows back to the oil-water separator after passing through the refining tower, gas-liquid separation tank, and condenser.
5. Filtration: After stripping, the crude product is filtered through a filter.