Method for innocently treating organic waste liquid generated in BDO production

A technology of harmless treatment and organic waste liquid, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as non-harmless treatment, increase production added value, reduce environmental pollution, The effect of high product yield

Active Publication Date: 2016-03-30
迪邦(泸州)化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for the harmless treatment of the organic waste liquid produced in the production of BDO in view of the problem that a large amount of relatively high-concentration organic waste liquid cannot be harmlessly treated in the existing process of producing BDO. At the same time, the intermediate products that can be used in industrial production are separated to realize the full recycling of waste liquid, increase the added value of production, reduce environmental pollution, and protect the environment

Method used

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  • Method for innocently treating organic waste liquid generated in BDO production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In the first step, throw 4 tons of BDO organic waste liquid into the refining tank and heat up.

[0045] a. Separation of low boilers: Feed the organic waste liquid into the refining tank, raise the temperature of the tank to 95°C, and adjust the reflux ratio to 2:1 under normal pressure. storage tanks;

[0046] b. Separation of water: after the separation of low boilers, the remaining bottom liquid is rectified to separate the water, and the refining tank continues to heat up to 115°C, and the vacuum pump is turned on, and the vacuum degree is 0.07MPa negative pressure refining, and the reflux ratio is 1:2 for separation Water, with the reduction of water output, gradually adjust the return flow ratio to 2:1 to continue to separate water;

[0047] c. Separation of 1,4-butanediol: After the separation of water is completed, the temperature of the refining tank continues to rise to 130°C, and the reflux ratio is adjusted to 1:2 to separate 1,4-butanediol (BDO). When th...

Embodiment 2

[0061] In the first step, throw 4 tons of BDO organic waste liquid into the refining tank and heat up.

[0062] a. Separation of low boilers: Feed the organic waste liquid into the refining tank, raise the temperature of the tank to 65°C, and adjust the reflux ratio to 3:1 under normal pressure. storage tanks;

[0063] b. Separation of water: after the separation of low boilers, the remaining bottom liquid is rectified to separate the water, and the refining tank continues to heat up to 105°C, and the vacuum pump is turned on, the vacuum degree is 0.095MPa negative pressure refining, and the reflux ratio is 1:3 for separation Water, with the reduction of water output, gradually adjust the return flow ratio to 3:1 to continue to separate water;

[0064] c. Separation of 1,4-butanediol: After the separation of water is completed, continue to heat up the refining kettle to 150°C, and adjust the reflux ratio to 1:3 to produce 1,4-butanediol (BDO). When the BDO content reaches mo...

Embodiment 3

[0078] In the first step, throw 4 tons of BDO organic waste liquid into the refining tank and heat up.

[0079] a. Separation of low boilers: Feed the organic waste liquid into the refining tank, raise the temperature of the tank to 80°C, and adjust the reflux ratio to 4:1 under normal pressure. storage tanks.

[0080] b. Separation of water: after the separation of low boilers, the remaining bottom liquid is rectified to separate the water, and the refining tank continues to heat up to 110°C, and the vacuum pump is turned on, the vacuum degree is 0.085MPa negative pressure refining, and the reflux ratio is 1:4 for separation Water, with the reduction of water output, gradually adjust the return flow ratio to 4:1 and continue to separate water.

[0081] c. Separation of 1,4-butanediol: After the separation of water is completed, continue to heat up the refining kettle to 170°C, and adjust the reflux ratio to 1:4 to produce 1,4-butanediol (BDO). When the BDO content reaches m...

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Abstract

The invention discloses a method for innocently treating an organic waste liquid generated in BDO production. According to the method, an organic waste liquid generated in BDO production is treated to obtain high-purity 1,4-butanediol (BDO), high-boiling residues, low-boiling residues, sodium nitrate and polyether polyol products, and innocent, recycling and zero emission treatment of the organic waste liquid generated in BDO production can be realized. The whole method is simple in process, easily controllable in condition and high in finished product yield, and all prepared products have high purity, little equipment investment, low production cost and energy consumption conservation. The method is applied to recycling treatment of organic waste liquid generated in BDO industrial production process to prepare products (industrial raw materials) which can be utilized in industrial production, meanwhile, innocent treatment and zero emission of pollutants can be realized. The method has extremely economic meaning and social meaning in the aspects of increasing production additional values, reducing environmental pollution and the like.

Description

technical field [0001] The invention relates to a method for treating industrial waste liquid, in particular to a method for harmlessly treating organic waste liquid produced in the production of BDO. Background technique [0002] 1,4-Butanediol, also known as BDO, is a widely used fine chemical raw material. Since it was introduced to China from DuPont in the United States at the beginning of the 21st century, its annual output has rapidly increased from the initial tens of thousands of tons to several million Ton. The production methods of BDO include maleic anhydride method, alkyne aldehyde method, allyl alcohol method, etc., but the most commonly used method is alkyne aldehyde method. The process of producing 1,4-butanediol by alkyne aldehyde method is to use acetylene and formaldehyde to generate 1,4-butynediol, and 1,4-butynediol is hydrogenated and saturated under high pressure to generate 1,4-butanediol alcohol. In this process, because the raw materials need to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/80C07C31/20C01D3/04C01D5/02C01D9/04C08J11/06C02F1/04C02F103/36
CPCC01D3/04C01D5/02C01D9/04C02F1/04C02F2103/36C07C29/80C08J11/06C08J2371/00C07C31/207Y02W30/62
Inventor 杨国权杨泽江夏锡兰肖勇严泽清
Owner 迪邦(泸州)化工有限公司
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