Cradle to Consumer
Identity ID
d2c3cb43-dfe3-4eb5-b49a-dae4dacb48ae
Materials
Associated ID
b10b4c92-3330-4107-ac0a-eb1caf9cb303
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. Acetyl tributyl citrate is widely used in fields such as plastics processing, coatings and adhesives, textiles, cosmetics, inks and rubber processing. Acetyl tributyl citrate 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, vacuum de-alcoholisation, acylation and de-acidification, separation, dehydration and filtration.
Activity Description
The production activities of this product include esterification reaction, vacuum dealcoholization, acylation and deacidification, separation, dehydration, filtration and other processes.
Process Description
Acetyl tributyl citrate (ATBC) has the chemical formula C24H44O8 and CAS number 77-90-7. It is generally a colorless, transparent, odorless oily liquid with extremely low volatility and good compatibility and stability. It is insoluble in water, readily soluble in organic solvents such as ethanol, diethyl ether, and acetone, and highly compatible with polymers such as polyvinyl chloride (PVC) and cellulose. It is chemically stable, resistant to hydrolysis, light, and heat, and has low toxicity. It is an environmentally preferable plasticizer free of harmful heavy metals and phthalates. It is mainly used in plastics processing, coatings and adhesives, textiles, cosmetics, inks, and rubber processing, and as a plasticizing additive in food-contact materials. It complies with applicable domestic and international environmental and safety requirements.
Time period
2014
2026
Geography
China,Xizang Autonomous Region
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 acetyl tributyl citrate (ATBC). In 2023, the domestic production capacity of this process will account for about 65%: anhydrous citric acid and butanol are used as raw materials, and sulfuric acid is used as a catalyst to perform an esterification reaction to produce crude tributyl citrate TBC. The crude tributyl citrate TBC is then acylated with acetic anhydride to become acetyl tributyl citrate (ATBC). Waste treatment is included.
1. Esterification reaction: Butanol is pumped into the esterification kettle through the butanol tank or feeding kettle, and citric acid monohydrate is pumped into the esterification kettle through the feeding kettle. During this process, the feeding kettle will produce waste gas butanol. After the feeding is completed, transfer the material to the esterification kettle, add the catalyst sulfuric acid, use steam to raise the temperature, and control the reaction temperature to 120-160°C until the esterification is completed.
2. Vacuum dealcoholization: It is completed in the alcohol water heater, esterification kettle reflux tower, condenser, and condenser. At the same time, most of the butanol in the generated water is removed by vacuum to the alcohol water evaporation tank. The separated butanol is then flowed out of the esterification kettle and used for the next batch of production. The separated water is reused in the water washing and neutralization process.
3. Acylation and deacidification: During production, the ATBC crude ester is cooled to 60-80°C, acetic anhydride is added to vinegar, and after acylation, acetic acid is removed with a vacuum pump and transferred to the acid tank. The acylation process will produce waste gas. Acetic acid is stored in an acetic acid storage tank and delivered to an acetic acid recycling company. After the acetic acid is removed, the ATBC crude ester is transferred to the treatment tank for washing and neutralization.
4. Post-processing (washing and neutralization, stripping, washing, vacuum dehydration, filtration): ATBC is first washed with distilled water and washing wastewater in the alcohol evaporation tank in the treatment tank. After washing, the material is tested for acid value, and an appropriate amount of 20% liquid alkali is added to neutralize it for 1 hour. After standing for 1 hour, the wastewater is released from the bottom of the tank, and the waste oil is reused until it is washed and neutralized; after neutralization The temperature of the ATBC is raised to 100~140°C, and tap water from the tap water storage tank is added. During the stripping process, exhaust gas butanol and waste water are produced. After stripping, the finished product is washed with tap water storage tanks to produce washing waste water, which is temporarily stored in Wash the water storage tank and reuse it to the washing and neutralization process; after washing, the temperature of the finished product is raised to 100°C, and the water is removed by vacuum. After vacuum dehydration, activated carbon is added to cool it. After passing through the filter and bag filter, the product ATBC is produced.