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Preparation method for basic copper nitrate

A copper nitrate, basic technology, applied in directions such as copper nitrate, to achieve the effects of reducing technological process, simplifying production equipment, and reducing production costs

Inactive Publication Date: 2012-08-15
廖勇志
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In fact, there is no method for preparing basic copper nitrate that can produce basic copper nitrate with stable quality, taking into account production cost and production efficiency. Therefore, a method that is convenient for industrial production, has reasonable raw material prices, and effectively improves production efficiency , the preparation method of basic copper nitrate that reduces production cost is imminent

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  • Preparation method for basic copper nitrate

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preparation example Construction

[0024] see figure 1 , the preparation method of a kind of basic copper nitrate of the present invention comprises the following steps:

[0025] (1), preparation A solution: in the first reactor preparation contains Cu 2+ and NO 3 - A solution;

[0026] Specifically, solution A can be directly prepared by dissolving copper nitrate in water, or it can be prepared by reacting copper, copper hydroxide, basic copper carbonate, copper oxide, etc. with nitric acid. Here, there is no special requirement on the concentration of the A solution. As a preference, the Baume degree of the A solution is 5-55.

[0027] (2) Prepare B solution: prepare OH containing OH in the second reactor - B solution;

[0028] Generally, solution B is prepared by dissolving soluble hydroxides, such as potassium hydroxide and sodium hydroxide, in water. As a preference, OH in solution B - The mass concentration is 1%-30%. As a further preference, OH - The mass concentration is 10%-20%.

[0029] (3)...

Embodiment 1

[0053] (1) prepare A solution: prepare a certain amount of Baume degree in the first reactor and be the copper nitrate solution of 5, stand-by;

[0054] (2) Prepare B solution: prepare a certain amount of OH in the second reactor - Mass concentration is 1% hydroxide solution, stand-by;

[0055] (3) introduce catalyst: add citric acid in A solution, make molar ratio Cu 2+ : C 6 h 5 o 7 3- =1:0.01; A solution and B solution are recorded as A' solution and B' solution respectively;

[0056] (4) In the third reactor of 2000L, add 500L water, water temperature is 10 ℃, then make A' solution and B' solution flow in the third reactor simultaneously, slowly, carry out reaction process. During the reaction process, a pH meter is used to monitor the pH value of the solution in the third reactor in real time and determine whether to adjust the flow of the two solutions according to the situation, so that the pH value in the reactor is controlled at about 3. After a period of conti...

Embodiment 2

[0060] (1) prepare A solution: prepare a certain amount of Baume degree in the first reactor and be the copper nitrate solution of 10, stand-by;

[0061] (2) Prepare B solution: prepare a certain amount of OH in the second reactor - Mass concentration is 10% hydroxide solution, stand-by;

[0062] (3) introduce catalyst: add sodium citrate in A solution, make molar ratio Cu 2+ : C 6 h 5 o 7 3- =1:0.3; A solution and B solution are respectively denoted as A' solution and B' solution;

[0063] (4) In the third reactor of 2000L, add 500L water, water temperature is 40 ℃, then make A' solution and B' solution flow in the third reactor simultaneously, slowly, carry out reaction process. During the reaction process, a pH meter is used to monitor the pH value of the solution in the third reactor in real time and determine whether to adjust the flow of the two solutions according to the situation, so that the pH value in the reactor is controlled at about 6. After a period of co...

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Abstract

The invention discloses a preparation method for basic copper nitrate, and the method comprises the following steps of: preparing a solution A containing Cu<2+> and NO3<->; preparing a solution B containing OH<->; introducing a citrate ion catalyst; preparing an intermediate product; transferring the intermediate product; and preparing a target product, namely basic copper nitrate. The preparation method for basic copper nitrate has the following advantages that: the raw materials which are low in price and easy to get are used, and the catalyst is introduced during the reaction process, thus increasing the production efficiency; simultaneously, production equipment is simplified, and technological processes are reduced, thus being more beneficial to industrial production and operation, and then lowering the production cost of the basic copper nitrate. Besides, the basic copper nitrate product prepared by the method disclosed by the invention is good and stable in quality.

Description

technical field [0001] The invention relates to a preparation method of chemical products, in particular to a preparation method of basic copper nitrate. Background technique [0002] Basic copper nitrate can be widely used in many fields such as pyrotechnics, propellants, copper product intermediates, and oxidants for preparing airbag generators, especially with the rapid development of the automobile industry and the safety and stability of airbag generators Due to the higher requirements brought forward by sex, the market demand gap for basic copper nitrate has always been large. Many basic copper nitrates currently on the market are simply mixtures of copper nitrate and copper hydroxide, and the quality is very unstable. In fact, there is no method for preparing basic copper nitrate that can produce basic copper nitrate with stable quality, taking into account production cost and production efficiency. Therefore, a method that is convenient for industrial production, ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/08
Inventor 廖勇志
Owner 廖勇志
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