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Method and equipment for preparing copper acetate by using nitric acid catalytic oxidation method

A technology of catalytic oxidation and copper acetate, applied in carboxylate preparation, organic chemistry, etc., can solve the problems of danger and high cost of pure oxygen preparation, achieve high utilization rate, increase equipment unit production capacity, and high conversion rate

Active Publication Date: 2013-03-13
山东潍坊双星农药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent Publication No. CN101503348A provides a technical solution for preparing copper acetate using pure oxygen as an oxidant, but the preparation cost of pure oxygen is high, and the explosion limit of reactant acetic acid is 5.4-16%, and there is danger in the process of bubbling pure oxygen

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  • Method and equipment for preparing copper acetate by using nitric acid catalytic oxidation method

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Effect test

Embodiment 1

[0050] A kind of method for preparing copper acetate by nitric acid catalytic oxidation method, comprises the steps:

[0051] S1. Fill the bottom reaction tower of the tower series reactor with copper plates (the content of copper is 97%wt), and the mixed acid solution with the content of nitric acid at 5%wt, the content of acetic acid at 80%wt, and the content of water at 15%wt Put it into the mother liquor tank first, and after heating to 80°C, use the circulation pump to send the mixed acid solution through the upper absorption tower into the bottom reaction tower, and at the same time pass air into the bottom reaction tower, and the mixed acid solution will react with the copper inside the bottom reaction tower;

[0052] S2. The mother liquor taken out from the bottom reaction tower first enters the mother liquor tank, and then utilizes the circulation pump to re-inject into the upper layer absorption tower for circulation reaction, until a small amount of copper acetate cr...

Embodiment 2

[0056] A kind of method for preparing copper acetate by nitric acid catalytic oxidation method, comprises the steps:

[0057] S1. Fill the bottom reaction tower of the tower series reactor with copper wire (the content of copper is 98%wt), and put the mixed acid solution with nitric acid content of 40%wt and acetic acid content of 60%wt into the mother liquor tank first, After heating to 95°C, use the circulation pump to send the mixed acid solution through the upper absorption tower into the bottom reaction tower, and at the same time, pass air into the bottom reaction tower, and the mixed acid solution will react with the copper inside the bottom reaction tower;

[0058] S2. The mother liquor taken out from the bottom reaction tower first enters the mother liquor tank, and then utilizes the circulation pump to re-inject into the upper layer absorption tower for circulation reaction, until a small amount of copper acetate crystallization occurs in the mother liquor, and the mo...

Embodiment 3

[0062] A kind of method for preparing copper acetate by nitric acid catalytic oxidation method, comprises the steps:

[0063] S1. Fill the bottom reaction tower of the tower series reactor with copper bars (the content of copper is 99%wt), and the mixed acid with the content of nitric acid at 30%wt, the content of acetic acid at 50%wt and the content of water at 20%wt Put the solution into the mother liquor tank first, and after heating to 90°C, use the circulation pump to send the mixed acid solution through the upper absorption tower into the bottom reaction tower. The speed is too fast), and the air is introduced into the bottom reaction tower, and the mixed acid solution will react with the copper inside the bottom reaction tower;

[0064] S2. The mother liquor taken out from the bottom reaction tower first enters the mother liquor tank, and then utilizes the circulation pump to re-inject into the upper layer absorption tower for circulation reaction, until a small amount ...

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Abstract

The invention discloses a method for preparing copper acetate by using a nitric acid catalytic oxidation method. The method comprises the steps of: carrying out recycle reaction between mixed acid solution of nitric acid and acetic acid and copper in the presence of oxygen to obtain saturated copper acetate solution; recrystalizing and filtering to obtain copper acetate. The invention also discloses equipment for implementing the method. According to the method and equipment, the preparation cost is lowered, no three wastes are produced in the preparation process, thereby realizing clean production; and no pure oxygen is used in the preparation process, and the safety of the reaction can be improved.

Description

technical field [0001] The invention belongs to the technical field of fungicide preparation, and in particular relates to a method for preparing copper acetate with copper, acetic acid, air and water as main raw materials and nitric acid as an oxidation catalyst, and equipment used. Background technique [0002] Copper acetate, also known as copper acetate, copper acetate monohydrate. The molecular formula is Cu (CH 3 COO) 2 ·H 2 O, used as analytical reagent, chromatographic analysis reagent. It is used as a catalyst or oxidant in organic synthesis, and it is also widely used in the fields of ceramic coloring and pesticides. [0003] The original preparation process of copper acetate uses copper sulfate, acetic acid, and liquid caustic soda (or soda ash) as raw materials. Because the by-product sodium sulfate is more, in order to remove sodium sulfate and produce high-quality copper acetate, water must be added, resulting in a large amount of For waste water containin...

Claims

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Application Information

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IPC IPC(8): C07C53/10C07C51/41
Inventor 刘新乐左德兴
Owner 山东潍坊双星农药有限公司
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