A kind of treatment method and device of glyphosate mother liquor

The technology of a glyphosate mother liquor and treatment method is applied in the field of glyphosate mother liquor treatment method and device, which can solve the problems of low separation rate of sodium chloride, avoid melting and hanging on the wall, increase the amount of precipitation and crystallization, increase yield effect

Active Publication Date: 2021-03-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of low sodium chloride separation rate during the treatment of glyphosate mother liquor in the prior art, and provide a method and device for treating glyphosate mother liquor

Method used

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  • A kind of treatment method and device of glyphosate mother liquor
  • A kind of treatment method and device of glyphosate mother liquor
  • A kind of treatment method and device of glyphosate mother liquor

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as figure 2 Shown, a kind of glyphosate mother liquor treatment device comprises the crystallization tank 1, rotor pump 2, solid-liquid separation device 3, conveying pump 4, incineration device 5 and dosing device 6 that are connected successively; Described crystallization tank 1 is provided with A material outlet 101 and at least two feeding ports 102 , the material outlet 101 is connected to the rotor pump 2 , and any feeding port 102 is connected to the dosing device 6 .

Embodiment 2

[0049] Such as image 3 Shown, a kind of glyphosate mother liquor processing device comprises the crystallization tank 1, rotor pump 2, solid-liquid separation device 3, delivery pump 4, supercritical water oxidation device 7 and dosing device 6 that are connected successively; The crystallization tank 1 is provided with a material outlet 101 and at least two feeding ports 102, the material outlet 101 is connected to the rotor pump 2, and any feeding port 102 is connected to the dosing device 6.

[0050] The working principle of the above-mentioned embodiment 1 and embodiment 2 is: the glyphosate mother liquor with a temperature of about 85-95° C. and sodium pyrophosphate or sodium phosphate are fully mixed in the crystallization tank 1, and the crystallization tank 1 can be provided with its inner wall as required. The scraper 103 in contact with each other prevents the sodium oxide crystals from adhering to the crystallization tank. In order to maintain the glyphosate mother...

Embodiment 3

[0053] The solid-liquid separation device 3 is also connected with a salt discharge device 8, and the salt discharge device 8 includes a self-priming pump 801 and a mobile device 802, and the sodium chloride crystallized out in the solid-liquid separation device 3 is precipitated at the bottom of the solid-liquid separation device 3, automatically One end of the suction pump 801 extends into the bottom of the solid-liquid separation device 3 to suck out the sodium chloride, and the other end is connected to the mobile device 802, and the mobile device 802 can transfer the sodium chloride sucked out by the self-priming pump 801.

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Abstract

The invention discloses a method and device for treating glyphosate mother liquor, which belongs to the technical field of chemical industry and environmental protection, and overcomes the problem in the prior art that the separation rate of sodium chloride is low during the treatment of glyphosate mother liquor. The device includes a crystallization tank, a rotor pump, a solid-liquid separation device, a delivery pump, an incineration device or a supercritical water oxidation device, and a dosing device connected in sequence; the crystallization tank is provided with a discharge port and at least two feed ports. The feed port is connected with the rotor pump, and any feed port is connected with the dosing device. Based on the same ion effect, sodium pyrophosphate or sodium phosphate is used to introduce sodium ions into the glyphosate mother liquor, which reduces the solubility of sodium chloride in the glyphosate mother liquor, increases the precipitation of sodium chloride, and then improves the Sodium chloride separation efficiency. At the same time, the output of the by-product sodium chloride industrial salt is increased, and the purity of the industrial by-product sodium pyrophosphate or sodium phosphate is guaranteed.

Description

【Technical field】 [0001] The invention belongs to the technical field of chemical engineering and environmental protection, and relates to a method and device for treating glyphosate mother liquor. 【Background technique】 [0002] Glyphosate is a non-selective, non-residual and destructive herbicide, which is very effective against perennial root weeds and is widely used in rubber, mulberry, tea, fruit and other planting fields. The waste water generated in the production of glyphosate is reduced through the concentration process, and the inorganic salts of the glyphosate mother liquor produced are mainly sodium chloride and sodium phosphate. After the glyphosate mother liquor is neutralized and oxidized, it is passed through the directional transformation device of the incineration system Production of crude sodium pyrophosphate. [0003] During the concentration process, a large amount of sodium chloride crystals will be produced and contained in the concentrated glyphosat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/02B01F3/12C01D3/04C01D3/14C02F1/16C07F9/38F23G7/04
CPCB01D9/02F23G7/04C02F1/16C07F9/3813C01D3/04C01D3/14C02F2103/36B01F23/50Y02P20/54
Inventor 王树众雷杰杨闯徐甜甜赵军王涛
Owner XI AN JIAOTONG UNIV
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