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Process of treating glyphosate mother solution by catalytic air oxidation method

A technology of glyphosate mother liquor and air oxidation, which is applied in the field of glyphosate mother liquor treatment technology, can solve the problems of incomplete degradation of glyphosate, and achieve the effects of low treatment cost, feasible resource utilization scheme, and complete degradation of organic matter

Active Publication Date: 2012-11-28
福华通达化学股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of incomplete degradation of glyphosate in treating glyphosate mother liquor by oxidation method, and to provide a process for treating glyphosate mother liquor by catalytic air oxidation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of technique of catalytic air oxidation method processing glyphosate mother liquor, process step is:

[0028] 500Kg of glyphosate mother liquor is transported by pump, heated to 114°C with a heat exchanger, and enters the reactor at an average speed of 65ml / min. The reactor is equipped with a catalytic catalyst and an electric heating furnace, and the temperature in the reactor is controlled at 290-300°C . At the same time, the compressed air is passed into the reactor, the liquid-air ratio of the mother liquor and air is 1:200 (g / L), the reaction pressure is 5Mpa, and the average reaction time after the mother liquor enters the reactor is 6.5 minutes. Under the action of oxidant, a relatively complex cracking and oxidation reaction is carried out to generate N 2 , NH 3 , CO 2、 h 3 PO 5 Wait. Then crystallize and separate to obtain phosphate and ammonia salt inorganic compounds which can be recycled.

[0029] The above-mentioned crystallization separation ...

Embodiment 2

[0031] A kind of technique of catalytic air oxidation method processing glyphosate mother liquor, process step is:

[0032] The glyphosate mother liquor is 500K, transported by a pump, heated to 110°C with a junction heat exchanger, and enters the reactor at an average speed of 55ml / min. The reactor is equipped with a catalyst with 1 part of palladium, 2 parts of zirconia and 1 part of yttrium oxide. Catalyst and heating electric furnace, the temperature inside the reactor is controlled at 260-270°C. At the same time, compressed air is passed into the reactor, the liquid-air ratio of mother liquor and air is 1:120 (g / L), the reaction pressure is 6Mpa, and the average reaction time is 5 minutes after the mother liquor enters the reactor. Under the action of oxidant, a relatively complex cracking and oxidation reaction is carried out to generate N 2 , NH 3 , CO 2、 h 3 PO 5 Wait. Then crystallize and separate to obtain phosphate and ammonia salt inorganic compounds which ca...

Embodiment 3

[0035] A kind of technique of catalytic air oxidation method processing glyphosate mother liquor, process step is:

[0036] The glyphosate mother liquor is 500K, transported by a pump, heated to 120°C with a junction heat exchanger, and enters the reactor at an average speed of 55ml / min. The reactor is equipped with a catalyst with 1 part of palladium, 2 parts of zirconia and 1 part of yttrium oxide. Catalyst and electric heating furnace, the temperature inside the reactor is controlled at 250-260°C. At the same time, the compressed air is passed into the reactor, the liquid-air ratio of the mother liquor and air is 1:150 (g / L), the reaction pressure is 7Mpa, and the average reaction time is 15 minutes after the mother liquor enters the reactor. Under the action of oxidant, a relatively complex cracking and oxidation reaction is carried out to generate N 2 , NH 3 , CO 2、 h 3 PO 5 Wait. Then crystallize and separate to obtain phosphate and ammonia salt inorganic compounds...

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Abstract

The invention relates to a glyphosate mother solution treatment process by means of a catalytic air oxidation method. Aiming to solve the problem of incomplete degradation of phosphorus-containing organics in treatment of a glyphosate mother solution by an oxidation method, the invention provides a process of treating a glyphosate mother solution by a catalytic air oxidation method. The process includes the steps of: first using a heat exchanger to heat the glyphosate mother solution to a temperature of 110-120DEG C, then bringing the glyphosate mother solution into a reactor in which a catalyst and a heating electric furnace are disposed, controlling the reaction temperature at 200-300DEG C, the reaction pressure at 5-9Mpa, as well as the mother solution and air in a ratio of 1:120-200(g / l), carrying out reaction for 5-15min, then performing crystallization separation, and recycling the obtained phosphate and salt. The process has a low treatment cost, the oxidizing agent is clean, inexpensive, and easily available, and organics can be degraded more completely.

Description

technical field [0001] The invention relates to a process for treating glyphosate mother liquor, in particular to a process for treating glyphosate mother liquor with a catalytic air oxidation method. Background technique [0002] Glyphosate is an environmentally friendly broad-spectrum herbicide that can effectively remove 76 of the 78 most harmful weeds in the world. With my country's accession to the WTO and the improvement of people's living environment requirements, glyphosate is in line with the development direction of the world's pesticide industry because of its high efficiency, low toxicity, broad spectrum, and no residue. It is the most brilliant chemical pesticide in the world in the 20th century. With the rapid promotion of global glyphosate-resistant transgenic crops in the 21st century, their market prospects will be even broader. [0003] Since glyphosate has a certain solubility in water, a certain amount of glyphosate mother liquor will inevitably be prod...

Claims

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Application Information

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IPC IPC(8): C02F9/10B01D53/14B01D53/04C02F1/44C02F1/04C02F1/74
Inventor 张平俊杨国华姜永红袁树林阮冬冬唐建军
Owner 福华通达化学股份公司
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