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Oxamide synthesizing production device and method

A production device, oxamide technology, applied in the field of synthetic oxamide production device, can solve the problems of high cost, complicated process, low safety factor, etc., and achieve the effects of high recovery rate, accelerated reaction rate, and easy absorption and treatment

Pending Publication Date: 2019-04-05
HENAN XINLIANXIN FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a production device and production method for synthesizing oxamide, to solve the defects of equipment structure and process complexity, high cost and low safety factor proposed in the above-mentioned background technology

Method used

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  • Oxamide synthesizing production device and method

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Embodiment 1

[0052]A production device for synthesizing oxamide, comprising an ammonia absorption unit and a dimethyl oxalate dissolving unit, the ammonia absorption unit and the dimethyl oxalate dissolving unit are connected to the oxamide synthesis reaction unit respectively, and the bottom of the oxamide synthesis reaction unit passes through The solid-liquid separator 7 is connected with the oxamide storage tank 8 . Described ammonia absorption unit comprises ammonia absorption tank 4, and the top of ammonia absorption tank 4 is provided with the ammonia gas inlet 10 that links to each other with ammonia gas storage tank 1, the first methanol inlet 11 that links to each other with methanol storage tank 2 and ammonia gas The first vent pipe 12 of the absorption tank, the liquid outlet at the bottom of the ammonia absorption tank 4 is connected to the first liquid inlet of the reaction kettle 6 in the oxamide synthesis reaction unit through the pipeline, and the first vent pipe 12 is conn...

Embodiment 2

[0062] A production device for synthesizing oxamide, comprising an ammonia absorption unit and a dimethyl oxalate dissolving unit, the ammonia absorption unit and the dimethyl oxalate dissolving unit are connected to the oxamide synthesis reaction unit respectively, and the bottom of the oxamide synthesis reaction unit passes through The solid-liquid separator 7 is connected with the oxamide storage tank 8 . Described ammonia absorption unit comprises ammonia absorption tank 4, and the top of ammonia absorption tank 4 is provided with the ammonia gas inlet 10 that links to each other with ammonia gas storage tank 1, the first methanol inlet 11 that links to each other with methanol storage tank 2 and ammonia gas The first vent pipe 12 of the absorption tank, the liquid outlet at the bottom of the ammonia absorption tank 4 is connected to the first liquid inlet of the reaction kettle 6 in the oxamide synthesis reaction unit through the pipeline, and the first vent pipe 12 is con...

Embodiment 3

[0072] A production device for synthesizing oxamide, comprising an ammonia absorption unit and a dimethyl oxalate dissolving unit, the ammonia absorption unit and the dimethyl oxalate dissolving unit are connected to the oxamide synthesis reaction unit respectively, and the bottom of the oxamide synthesis reaction unit passes through The solid-liquid separator 7 is connected with the oxamide storage tank 8 . Described ammonia absorption unit comprises ammonia absorption tank 4, and the top of ammonia absorption tank 4 is provided with the ammonia gas inlet 10 that links to each other with ammonia gas storage tank 1, the first methanol inlet 11 that links to each other with methanol storage tank 2 and ammonia gas The first vent pipe 12 of the absorption tank, the liquid outlet at the bottom of the ammonia absorption tank 4 is connected to the first liquid inlet of the reaction kettle 6 in the oxamide synthesis reaction unit through the pipeline, and the first vent pipe 12 is con...

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Abstract

The invention belongs to an oxamide synthesizing production device and method. The oxamide synthesizing production device comprises an ammonia absorbing unit and a dimethyl oxalate dissolving, which are connected with an oxamide synthesizing reaction unit, and the bottom of the oxamide synthesizing reaction unit is connected with an oxamide storage tank through a solid-liquid separator. The oxamide synthesizing production device has the advantages of being simple in structure, reasonable in technical design, convenient to generalize, mild in operation condition, high in operability and safetyindex, low in energy consumption, capable of facilitating treatment of produced exhaust, low in environmental protection investment and broad in industrialization prospect.

Description

technical field [0001] The invention belongs to the technical field of oxamide synthesis, in particular to a production device and a production method for synthesizing oxamide. 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, meet Compared with traditional quick-acting nitrogen fertilizer, oxamide fertilizer reduces nitrogen leaching loss, volatilization and denitrification loss, improves fertilizer utilization rate, and reduces fertilization times. Save manpower and time. Therefore, it is imminent to find a suitable method for the industrialization of oxamide. [0003] At present, the method for synthesizing oxamide mainly contains three kinds: 1, take hydrocyanic acid as the raw material pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J4/02B01D3/14C07C231/02
CPCB01D3/14B01J4/008B01J4/02B01J19/18C07C231/02C07C233/56
Inventor 张洋洋朱止阳余复幸徐严伟耍芬芬张少利张伟利高继光宋仁委
Owner HENAN XINLIANXIN FERTILIZER
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