Method for reducing the residual water in a facility that produces polyester, and polyester plant produce with the emission of waste water diminuu00ecda

摘要

Method for reducing the residual water in a facility that produces polyester, and the plant producing polyester with emission of waste water diminuu00ecda. A method that reduces the residual water in a facility that produces polyester includes a step in which a composition containing ethylene glycol from at least one of the chemical reactors is provided to a separation column of water.The separation column of water is maintained within a predetermined temperature range such that any acetaldehyde present in the water separation column is substantially maintained in a vapor state. A mixture of residual steam comprising one or more organic compounds is subsequently removed from the separation column of water and subjected to combustion.The facility that manufactures polyether optionally includes a spray condenser system having a heat exchanger such that the heat exchanger is communicated with a composition of ethylene glycol derived from the separation column of hot water when the heat exchanger needs Cleaning.The facility that produces polyester can be closed with a roof and walls such that the rain water is prevented from being contaminated with any organic chemicals present in the plant producing polyester.