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Preparation method for basic copper nitrate

A copper nitrate, basic technology, applied in directions such as copper nitrate, can solve the problems of unstable quality, poor product quality, high cost of basic copper nitrate, achieve good social and economic benefits, simple equipment and technological process, convenient The effect of industrial production

Active Publication Date: 2012-08-15
苏州长湖纳米科技有限公司
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  • Claims
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Problems solved by technology

However, in industrialized production, there are the following problems: the price of raw materials is relatively high, the production equipment and process are complicated, and the production efficiency is low. These factors directly or indirectly lead to the high cost of basic copper nitrate products; at the same time, the current market Most of the basic copper nitrates on the market are simply mixed copper nitrate and copper hydroxide, which has the problems of poor product quality and unstable quality, which makes it easy to decompose and cannot maintain performance stably for a long time
At present, there is no method for preparing basic copper nitrate, which can well solve the above problems

Method used

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  • Preparation method for basic copper nitrate

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preparation example Construction

[0024] refer to figure 1 , the preparation method of basic copper nitrate of the present invention comprises the following steps:

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

[0026] Specifically, solution A can be prepared directly by dissolving copper nitrate in water, or 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), preparation of B solution: preparation containing NH in the second reactor 4 + and OH - B solution;

[0028] Solution B can be ammonia water directly, or a mixed solution of ammonia water and water mixed in any proportion, or ammonia gas can be used directly, because the reaction process is carried out under water phase conditions, and ammonia gas is very soluble in water to form Am...

Embodiment 1

[0048] (1), prepare A solution: prepare the copper nitrate solution that Baumé degree is 5 in the first reactor, stand-by;

[0049] (2), preparation B solution: prepare NH in the second reactor 4 + Mass concentration is 1% ammonia solution, stand-by;

[0050] (3) Add 500L of water into the third reactor of 2000L, the water temperature is 10°C, then make the A solution and the B solution flow into the third reactor simultaneously and slowly to carry out the 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 continuous reaction, the two solutions are closed to obtain an intermediate product;

[0051] (4), transfer the intermediate product: transfer the intermediate product to the fourth reactor, and wash until the washing...

Embodiment 2

[0054] (1), prepare A solution: prepare the copper nitrate solution that Baumé degree is 25 in the first reactor, stand-by;

[0055] (2), preparation B solution: prepare NH in the second reactor 4 + Mass concentration is 10% ammonia solution, stand-by;

[0056] (3) Preparation of intermediate product: Add 500L of water to the third reactor of 2000L, heat to 40°C, then flow the two solutions prepared in step (1) and step (2) into the third reactor simultaneously and slowly , carry out the 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 continuous reaction, the two solutions are closed to obtain an intermediate product;

[0057] (4), transfer the intermediate product: transfer the intermediate product to the fourth re...

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Abstract

The invention discloses a preparation method for basic copper nitrate, and the method is characterized by comprising the following steps of: preparing a solution A containing Cu<2+> and NO3<-> in a first reactor; preparing a solution B containing NH4<+> and OH<-> in a second reactor; enabling the solution A and the solution B to flow into a third reactor simultaneously, reacting in a water phase, adjusting the flow rates of the solution A and the solution B to cause the pH value of the reaction solution in the third reactor to be 3-10, and then preparing an intermediate product; transferring the intermediate product in a fourth reactor, washing until a washing solution is neutral, and then performing primary dewatering treatment to prepare a primary product; performing a series of subsequent treatments such as dehydration on the primary product in a fifth reactor, and then preparing a target product, namely basic copper nitrate. The preparation method for basic copper nitrate is increased in production efficiency by using the raw materials which are low in price and easy to get, simple equipment and simple technological processes, good and stable in product quality, and good in social and economic benefits.

Description

technical field [0001] The invention relates to a preparation method of chemical products, in particular to a preparation method of basic copper nitrate, belonging to the field of chemistry. Background technique [0002] Basic copper nitrate can be used as an intermediate of copper products, and can also be used in the fields of fireworks and propellants, and can also be used as an oxidant for preparing airbag gas generating agents. It has a wide range of uses and is important. Especially with the development of the automobile industry, the market demand for a new generation of non-toxic, harmless and stable gas generating agents is also increasing, which leads to a rapid increase in the demand for basic copper nitrate year by year. However, in industrialized production, there are the following problems: the price of raw materials is relatively high, the production equipment and process are complicated, and the production efficiency is low. These factors directly or indirect...

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 苏州长湖纳米科技有限公司
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