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A device for producing oxamide by utilizing a high-gravity reactor and a production method thereof

A high-gravity reactor and oxamide technology, applied in chemical instruments and methods, chemical/physical/physical-chemical fixed reactors, carboxylic acid amide preparation, etc., can solve the problems of high reaction temperature and long reaction residence time, etc. Achieve low reaction temperature, shortened residence time, and reduced equipment size

Active Publication Date: 2017-08-29
HENAN XINLIANXIN FERTILIZER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the reaction temperature is high and the reaction residence time is long, so it can only be carried out intermittently.

Method used

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  • A device for producing oxamide by utilizing a high-gravity reactor and a production method thereof
  • A device for producing oxamide by utilizing a high-gravity reactor and a production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A device for producing oxamide using a high-gravity reactor, comprising a dimethyl oxalate storage tank 1, a methanol storage tank 2, a liquid ammonia tank 3 and a water tank 4, and the dimethyl oxalate storage tank 1 passes through a solid conveying device 5 and a batching tank 6 is connected to the solid inlet, the outlet of the methanol storage tank 2 is connected to the liquid inlet of the batching kettle 6 through the first pump 7, the outlet of the batching kettle 6 is connected to the liquid inlet 90 of the supergravity reactor 9 through the second pump 8, and the liquid ammonia tank 3 Connect to the gas inlet 91 of the supergravity reactor 9 through the pressure reducing valve 10, the outlet 92 of the supergravity reactor 9 is connected to the solid-liquid separation device 11, the solid-liquid separation device 11 solid outlet is connected to the drying device 12, and the drying device 12 The solid outlet of the oxamide product storage tank 13 is connected, and ...

Embodiment 2

[0038] A device for producing oxamide using a high-gravity reactor, comprising a dimethyl oxalate storage tank 1, a methanol storage tank 2, a liquid ammonia tank 3 and a water tank 4, and the dimethyl oxalate storage tank 1 passes through a solid conveying device 5 and a batching tank 6 is connected to the solid inlet, the outlet of the methanol storage tank 2 is connected to the liquid inlet of the batching kettle 6 through the first pump 7, the outlet of the batching kettle 6 is connected to the liquid inlet 90 of the supergravity reactor 9 through the second pump 8, and the liquid ammonia tank 3 Connect to the gas inlet 91 of the supergravity reactor 9 through the pressure reducing valve 10, the outlet 92 of the supergravity reactor 9 is connected to the solid-liquid separation device 11, the solid-liquid separation device 11 solid outlet is connected to the drying device 12, and the drying device 12 The solid outlet of the oxamide product storage tank 13 is connected, and ...

Embodiment 3

[0045] A device for producing oxamide using a high-gravity reactor, comprising a dimethyl oxalate storage tank 1, a methanol storage tank 2, a liquid ammonia tank 3 and a water tank 4, and the dimethyl oxalate storage tank 1 passes through a solid conveying device 5 and a batching tank 6 is connected to the solid inlet, the outlet of the methanol storage tank 2 is connected to the liquid inlet of the batching kettle 6 through the first pump 7, the outlet of the batching kettle 6 is connected to the liquid inlet 90 of the supergravity reactor 9 through the second pump 8, and the liquid ammonia tank 3 Connect to the gas inlet 91 of the supergravity reactor 9 through the pressure reducing valve 10, the outlet 92 of the supergravity reactor 9 is connected to the solid-liquid separation device 11, the solid-liquid separation device 11 solid outlet is connected to the drying device 12, and the drying device 12 The solid outlet of the oxamide product storage tank 13 is connected, and ...

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PUM

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Abstract

The invention provides a device for producing oxamide by utilizing a high-gravity reactor and a production method thereof. The device includes a dimethyl oxalate storage tank, a methanol storage tank, a liquid ammonia tank and a water tank. The dimethyl oxalate storage tank is connected to a solid inlet of a material burdening kettle through a solid transporter. An outlet of the methanol storage tank is connected to a liquid inlet of the material burdening kettle through a first pump. The outlet of the material burdening kettle is connected to a liquid inlet of the high-gravity reactor through a second pump. The liquid ammonia tank is connected to a gas inlet of the high-gravity reactor through a reducing valve. The outlet of the high-gravity reactor is connected to a solid-liquid separator. The solid outlet of the solid-liquid separator is connected to a dyer. A solid outlet of the dryer is connected to an oxamide finished product storage tank. A gas outlet of the high-gravity reactor and a gas outlet of the dryer are connected to the water tank separately. The device and the method have advantages of continuous production, a small size, low reaction temperature, and a low production cost.

Description

technical field [0001] The invention belongs to the technical field of oxamide production, and in particular relates to a device and a production method for producing oxamide by using a supergravity reactor. Background technique [0002] Oxamide, molecular formula (CONH 2 ) 2 , molecular weight is 88.1, nitrogen content is 31.8%, white powder, no moisture absorption in the air, non-toxic, easy to store, solubility in water is 0.016%, during hydrolysis or biodegradation process, gradually release ammoniacal nitrogen and carbon dioxide, is A good urea-formaldehyde slow-release fertilizer, compared with current quick-acting fertilizers such as ammonium bicarbonate, ammonium sulfate, and urea, it has the following advantages: [0003] (1) The solubility of granular oxamide in water is small, and it is not easy to be taken away by the water flow after fertilization, and the loss is small. During the process of hydrolysis or biodegradation, nitrogen in the form that plants can e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/02C07C233/56B01J19/18B01J19/30
CPCB01J19/18B01J19/30B01J2219/00033C07C231/02C07C233/56
Inventor 张洋洋段艳慧徐严伟余复幸刘欣孟雪杨国洞王洪营
Owner HENAN XINLIANXIN FERTILIZER