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Treatment method for anti-aging agent 6PPD production wastewater

A technology for the production of wastewater and treatment methods, applied in the direction of heating water/sewage treatment, etc., can solve the problems of waste of organic matter, low economic benefits, high energy consumption, etc., and achieve the effects of easy oil phase recovery, cost reduction, and energy consumption reduction

Inactive Publication Date: 2020-02-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For this kind of dilute solution containing organic matter, if it is directly biochemical without treatment, the organic matter will be wasted and the cost of biochemical treatment will be increased; if the waste water is treated by traditional methods (such as rectification and solvent extraction, etc.), the energy consumption will be large and the economic benefit will be high. Low

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  • Treatment method for anti-aging agent 6PPD production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 (batch distillation)

[0022] Drive 6 tons of anti-aging agent 6PPD production wastewater into 10m with a metering pump 3 In the distillation still, open the waste heat of the device (recover steam) to heat the waste water, the temperature of the still is 96-98°C, collect the fraction with a gas phase temperature of 87-95°C, and enter the phase separator with metering equipment to separate the phases after the gas phase is condensed. When the temperature exceeds 99°C, the gas phase temperature exceeds 95°C, and the condensate in the metering phase separator is 204Kg, the distillation is stopped. Take the waste water from still distillation and the oil phase layer after phase separation, and use the gas spectrometry external standard method to detect the mass percentage content of MIBK and MIBC; take the waste water from still distillation and the waste water after distillation, and use the chemical titration method to detect the COD of waste water, The res...

Embodiment 2

[0023] Embodiment 2 (batch distillation)

[0024] Drive 6 tons of anti-aging agent 6PPD production wastewater into 10m with a metering pump 3 In the distillation still, open the waste heat of the device (recover steam) to heat the waste water, the temperature of the still is 96-98°C, collect the fraction with a gas phase temperature of 87-95°C, and enter the phase separator with metering equipment to separate the phases after the gas phase is condensed. If the temperature exceeds 99°C, the gas phase temperature exceeds 95°C, and the condensate in the metering phase separator is 228Kg, stop the distillation. Take the waste water from still distillation and the oil phase layer after phase separation, and use the gas spectrometry external standard method to detect the mass percentage content of MIBK and MIBC; take the waste water from still distillation and the waste water after distillation, and use the chemical titration method to detect the COD of waste water, The results are...

Embodiment 3

[0025] Embodiment 3 (batch distillation)

[0026] Drive 6 tons of anti-aging agent 6PPD production wastewater into 10m with a metering pump 3 In the distillation still, open the device waste heat (recovery steam) to heat the waste water, the temperature of the still is 96-100°C, collect the fraction with a gas phase temperature of 87-96°C, and enter the phase separator with metering equipment to separate the phases after the gas phase is condensed. If the temperature exceeds 99°C, the gas phase temperature exceeds 96°C, and the condensate in the metering phase separator is 264Kg, stop the distillation. Take the waste water from still distillation and the oil phase layer after phase separation, and use the gas spectrometry external standard method to detect the mass percentage content of MIBK and MIBC; take the waste water from still distillation and the waste water after distillation, and use the chemical titration method to detect the COD of waste water, The results are show...

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Abstract

The invention provides a treatment method for anti-aging agent 6PPD production wastewater. The treatment method can effectively recover MIBK and MIBC in the anti-aging agent 6PPD production wastewater, reduce wastewater COD, achieve the reuse of resources, and further reduce the production costs of an enterprise. According to the method, waste heat (recovered steam) of an anti-aging agent 6PPD device is used to distill the wastewater, the mass percentage of a wastewater vaporization amount and a wastewater addition amount is controlled to be less than 10%, and the wastewater is partially vaporized; in the batch distillation state, the temperature of a kettle is controlled at 96-100 DEG C, the gas phase temperature is controlled at 87-96 DEG C, and the mass percentage of the wastewater vaporization amount and the wastewater addition amount is controlled at 3-6%, the single-pass recovery rate of the MIBK and the MIBC is >98% (wt%), and the removal rate of the wastewater COD is >97%; andin the continuous distillation state, the temperature of the kettle is controlled at 96-100 DEG C, the gas phase temperature is controlled at 87-96 DEG C, and the mass percentage of the wastewater vaporization amount and the wastewater addition amount is controlled at 6-9%, the single-pass recovery rate of the MIBK and the MIBC is >95% (wt%), and the single-pass removal rate of the wastewater CODis >95%.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and relates to a treatment method for wastewater produced by antioxidant 6PPD, in particular to a treatment method for distilling wastewater produced by antioxidant 6PPD by using waste heat (recovered steam) from an antioxidant 6PPD device. Background technique [0002] In the process of producing anti-aging agent 6PPD from RT base and MIBK as raw materials, the amount of wastewater produced per ton of anti-aging agent 6PPD is 70-100Kg, and the wastewater contains 1%-1.7% (wt.%) of MIBK and 0.3% of MIBC ( wt.%) is about, and the wastewater COD is about 50000mg / L. If the wastewater is directly biochemically treated, it will not only lose organic materials MIBK and MIBC, but also increase the cost of biochemical treatment. [0003] Large foreign companies that produce anti-aging agent 6PPD include American Chemtura Corporation, Czech Agfor Group, Germany Lanxess Corporation and South Korea ...

Claims

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Application Information

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IPC IPC(8): C02F1/04
CPCC02F1/04
Inventor 陶建青管成年黄伟孙小飞任磊李秀清
Owner CHINA PETROLEUM & CHEM CORP
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