Comprehensive utilization method of wastewater of ternary monomer production process
A production process and three-monomer technology, which is applied in the field of comprehensive utilization of process wastewater after removing methanol from three monomers, can solve the problems of no comprehensive utilization, resin inactivation, high energy consumption, etc., and achieve the effect of zero-emission clean production
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Embodiment 1
[0049] Embodiment 1 A kind of method for the comprehensive utilization of three-monomer production process wastewater
[0050] Include the following steps:
[0051] Step 1. Concentrate and prepare pure water
[0052] The wastewater after methanol removal is evaporated and concentrated by the MVR device to obtain pure water conforming to the production of three monomers and containing three monomers (dimethyl isophthalate-5-sodium sulfonate), monomethyl isophthalate- Concentrate of organic substances such as sodium 5-sulfonate and sodium 5-sulfonate isophthalate.
[0053] The specific operation is as follows:
[0054] (1) Feed
[0055] The wastewater after methanol removal is pumped to the raw material tank of the system, and the wastewater after methanol removal is pumped into the plate heat exchanger from the raw material tank by the feed pump, and the flow rate of the pump is controlled to be 2m 3 / h, outlet pressure 0.2MPa.
[0056] (2) Heat exchange
[0057] The wast...
Embodiment 2
[0101] Embodiment 2 A kind of method for the comprehensive utilization of three-monomer production process wastewater
[0102] Include the following steps:
[0103] Step 1. Concentrate and prepare pure water
[0104] The wastewater after methanol removal is evaporated and concentrated by the MVR device to obtain pure water conforming to the production of three monomers and containing three monomers (dimethyl isophthalate-5-sodium sulfonate), monomethyl isophthalate- Concentrate of organic substances such as sodium 5-sulfonate and sodium 5-sulfonate isophthalate.
[0105] The specific operation is as follows:
[0106] (1) Feed
[0107] The wastewater after methanol removal is pumped to the raw material tank of the system, and the wastewater after methanol removal is pumped into the plate heat exchanger from the raw material tank by the feed pump, and the flow rate of the pump is controlled to be 3m 3 / h, outlet pressure 0.25MPa.
[0108] (2) Heat exchange
[0109] The was...
Embodiment 3
[0149] Embodiment 3 A kind of method for the comprehensive utilization of three-monomer production process wastewater
[0150] Include the following steps:
[0151] Step 1. Concentrate and prepare pure water
[0152] The wastewater after methanol removal is evaporated and concentrated by the MVR device to obtain pure water conforming to the production of three monomers and containing three monomers (dimethyl isophthalate-5-sodium sulfonate), monomethyl isophthalate- Concentrate of organic substances such as sodium 5-sulfonate and sodium 5-sulfonate isophthalate.
[0153] The specific operation is as follows:
[0154] (1) Feed
[0155] The wastewater after methanol removal is pumped to the raw material tank of the system, and the wastewater after methanol removal is pumped into the plate heat exchanger from the raw material tank by the feed pump, and the flow rate of the pump is controlled to be 4m 3 / h, outlet pressure 0.3MPa.
[0156] (2) Heat exchange
[0157] The wast...
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