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Purification device and method for epoxy compound-containing material

An epoxy compound and purification device technology, applied in the field of purification, can solve problems such as unsatisfactory wastewater treatment effects, and achieve the effects of easy operation, high removal rate, and low energy consumption

Active Publication Date: 2021-12-07
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the treatment method of waste liquid containing epoxy compounds is a biochemical method. Before the biochemical treatment, it generally undergoes a series of physical pretreatments such as clarification, filtration, neutralization, cooling, and dilution. However, the wastewater treatment effect has not been ideal.

Method used

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  • Purification device and method for epoxy compound-containing material

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Embodiment 1

[0099] The present embodiment provides a purification device for materials containing epoxy compounds, such as figure 1 As shown, the purification device includes: a feed unit, a washing unit X, a catalytic hydrolysis unit and a separation unit;

[0100] The feeding unit includes an anti-suckback device T and a material pipe L connected in sequence;

[0101] A hydrolyzate feeding port is arranged between the anti-suckback device T and the material pipe L;

[0102] The anti-suckback device T is provided with a material feed port 3;

[0103] The lowest end of the material pipe L is located below the working liquid level of the catalytic hydrolysis unit;

[0104] The rinsing unit X includes a spray head X1, an adsorption layer X2 and a treated gas inlet X3 arranged sequentially from top to bottom;

[0105] The rinsing unit X is arranged on the upper part of the purification device;

[0106] The lowest end of the rinsing unit X is higher than the working liquid level of the ri...

Embodiment 2

[0114] The epoxy compound-containing material in this embodiment is an aqueous solution containing 12.5% ​​(mass percentage) of propylene oxide.

[0115] This embodiment provides a method for purifying materials containing epoxy compounds, said method comprising the steps of:

[0116] (1) Feed the material containing epoxy compound and liquid into catalytic hydrolysis unit to carry out catalytic hydrolysis reaction, obtain the liquid after reaction; Wherein, described epoxy compound comprises propylene oxide; The mass percentage of epoxy compound in the described material The content is 12.5%; the material is a liquid material; the catalyst in the catalytic hydrolysis reaction is a sulfuric acid solution; the mass concentration of the catalyst is 10g / L; 1%; the pressure of the catalytic hydrolysis is 0.5MPaG; the reaction temperature of the catalytic hydrolysis is 140°C; the reaction time of the catalytic hydrolysis is 0.5h; the stirring rate of the catalytic hydrolysis is 200...

Embodiment 3

[0120] The epoxy compound-containing material in this embodiment is nitrogen containing 16% (mass percent) butylene oxide.

[0121] This embodiment provides a method for purifying materials containing epoxy compounds, said method comprising the steps of:

[0122] (1) feed the material and liquid containing epoxy compound into the catalytic hydrolysis unit to carry out the catalytic hydrolysis reaction, and obtain the liquid after the reaction; wherein, the material is butylene oxide gas material; the quality of butylene oxide in the material The percentage content is 16%, the flow rate is 50Nm 3 / h; the catalyst in the catalytic hydrolysis reaction is potassium hydroxide solution; the mass concentration of the liquid phase catalyst is 12g / L; the addition of the catalyst is 1.2% of the total liquid material quality in the purification device; The pressure of the catalytic hydrolysis is 1MPaG; the reaction temperature of the catalytic hydrolysis is 120°C; the reaction time of t...

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Abstract

The invention relates to a purification device and method for an epoxy compound-containing material. The purification device comprises a feeding unit, a catalytic hydrolysis unit and a separation unit; the feeding unit comprises an anti-suck-back device and a material pipe which are connected in sequence; a hydrolysate feeding hole is formed between the anti-suck-back and the material pipe; the anti-suck-back device is provided with a material inlet; the catalytic hydrolysis unit is arranged at the bottom of the purification device; a liquid outlet of the catalytic hydrolysis unit is connected with a liquid inlet of the separation unit. According to the device and the method, impurity epoxy compounds in waste gas or waste liquid are removed at low temperature and low pressure, and conversion and high-added-value utilization of the epoxy compounds are achieved. The purification method is simple, easy to operate, low in investment, low in energy consumption and high in epoxy compound removal rate. According to the purification method and device, the removal rate of epoxy compounds in waste gas or waste liquid reaches up to 99.9% or above.

Description

technical field [0001] The invention relates to the field of purification, in particular to a purification device and method for materials containing epoxy compounds. Background technique [0002] At present, epoxy compounds, as important chemical products, are widely used in the fields of chemical synthesis and medical sterilization. Among them, in the field of chemical synthesis, they can be used to synthesize polyether polyols, and then used to produce polyurethane. Ethylene oxide (EO), propylene oxide (PO) and butylene oxide (BO) are C2-C4 low-carbon epoxy compounds, active in nature, low boiling point, volatile, flammable and explosive, and highly reactive heat and poisonous hazards. With the development of my country's advanced manufacturing industry, the demand for new functional materials and special lubricants is increasing, and the demand for epoxy compounds is also increasing. Epoxy compounds are inevitably mixed in the waste gas or waste liquid discharged durin...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/72B01D53/14B01D53/02
CPCB01D53/8668B01D53/02B01D53/1487B01D2252/2023B01D2255/2022B01D2255/70B01D2255/808Y02A50/20
Inventor 郑征王利国李会泉贺鹏曹妍陈家强徐爽
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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