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Polyester Polyol Production Process | JCT Machinery

October 15, 2024

polyester polyol reactor

Main Equipment of Polyester Polyol Production Line
1. Raw Material Storage and Transportation Equipment: raw material storage tank, metering pump.
2. Esterification Reaction Equipment: reactor.
3. Heating and Temperature Control Equipment: thermal oil furnace, steam heating system.
4. Dehydration System: condenser, water separator.
5. Distillation tower
6. Cooling System: heat exchanger, cooling water system.
Polyester Polyol Production Process
  • 1. Raw Material Preparation

  • Input dibasic acid and diol into the reactor in proportion and add catalyst.

  • 2. Esterification Reaction

  • Esterification reaction is carried out under heating and catalyst to generate polyester polyols, and by-products (water) are continuously removed.

  • 3. Dehydration and Condensation

  • The water generated by the reaction is removed through the condenser and water separator to ensure the smooth progress of the reaction.

  • 4. Determination of Reaction End Point

  • The reaction is completed by monitoring the acid value and the reaction is stopped.

  • 5. Cooling and Refining

  • The reaction product is cooled by a cooler and refined by a distillation tower if necessary to remove low molecular weight by-products.

  • 6. Filtration and Storage

  • Impurities are removed by filters and the product is transported to storage tanks for storage.

  • 7. Waste Gas and Wastewater Treatment

  • Treat the waste gas and wastewater generated during the production process to ensure that environmental protection standards are met.


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