Cradle to Gate
Identity ID
d76be18b-474d-4db2-9573-13daa5613ed0
Waste treatment
Associated ID
664c3eab-fe66-4734-820d-2b8bdbfb92fd
Included activities starts
Included activities ends
Description
The main raw materials for the preparation of alcohol hydrolysis of waste PET bottle flakes are clean PET bottle flakes, and the main auxiliary materials are ethylene glycol and sodium isophthalate-5-sulfonate. Clean waste bottle flakes are alcoholized into BHET under the action of ethylene glycol, sodium isophthalate-5-sulfonate is esterified under the action of ethylene glycol to form trimonomers, and then the trimonomers and BHET undergo polycondensation reaction to produce recycled polyester.
The main sewage discharge is the floor flushing water of the workshop and the cooling and drainage of the circulation system, which are discharged into the municipal pipe network after treatment in the site. The exhaust gas is generated from the exhaust gas generated by the gas boiler, the exhaust gas of the glycol distillation tower, the exhaust gas of alcohol decomposition and filtration and the unorganized exhaust gas of each reaction unit, which is indirectly discharged into the atmosphere after treatment. Waste mainly includes filtration waste residue, cleaning waste liquid, waste filter element, and waste chemicals
Barrels, waste packaging materials, wastewater treatment sludge, waste cleaning liquid, waste gas filter element, and waste chemical barrel are treated as hazardous waste, and after collection, they are handed over to qualified enterprises for disposal.
The main raw material of this dataset is clean waste PET bottle flakes, which need to be cleaned with the cleaning process.
Activity Description
This dataset represents the process of producing recycled polyester pellets from waste PET flakes through alcoholysis. It includes energy and auxiliary material consumption during the process, as well as emissions of waste, exhaust gases, and wastewater generated in the process.
Process Description
Production of recycled polyester pellets through alcoholysis treatment of clean PET flakes
Time period
2016
2026
Geography
China
Geography comment
Suqian, Jiangsu
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The processing technology in this dataset is alcoholysis, primarily involving clean waste bottle flakes being alcoholized into BHET using ethylene glycol, while sodium isophthalate-5-sulfonate undergoes esterification with ethylene glycol to generate a trifunctional monomer, followed by a polycondensation reaction between the trifunctional monomer and BHET to produce recycled polyester.