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Production method of sodium copper chlorophyllin

A copper chlorophyllin sodium salt and a production method technology are applied in the field of fine chemical industry to prepare natural pigments, which can solve the problems of large solvent consumption, multiple equipment, and reduced yield, and achieve obvious energy saving and emission reduction, increase product yield, and reduce The effect of equipment investment

Active Publication Date: 2012-01-11
四川通世达生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the saponification reaction, ethanol (or acetone) and gasoline (or petroleum ether) are used to dissolve the saponification reactants to form a liquid-liquid separation, and the two liquids need to stand for a long time before they can be layered and separated, so Takes up too much equipment and consumes a lot of time
[0005] 2. Large solvent consumption and high energy consumption
Due to the need for large doses of gasoline (or petroleum ether) to dissolve the unsaponifiable matter many times, the consumption is large (more than 30 times), and the recovery temperature is high, resulting in large consumption, high energy consumption and high cost
[0006] 3. Low yield
Due to liquid-liquid separation, there is always a transition zone between the two liquids, the interface is not easy to control, and it is easy to cause losses and reduce the yield.

Method used

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  • Production method of sodium copper chlorophyllin
  • Production method of sodium copper chlorophyllin

Examples

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Effect test

Embodiment 1

[0021] Such as figure 1 Shown, embodiment 1: a kind of production method of sodium copper chlorophyllin, with pasty chlorophyll as raw material, comprises the following steps:

[0022] a. Saponification separation: directly add NaOH solution to the pasty chlorophyll and stir until PH=12~14, control the temperature at 50°C, react for 60 minutes, control the stirring speed at 80 r / min, add paste to the reactant after saponification reaction Dissolve acetone that is 3 times the weight of chlorophyll, control the temperature at 40°C, and control the stirring speed at 100 r / min to form a solid-liquid phase, and obtain a saponified solid through solid-liquid filtration, and then add 1 to 2 times acetone to wash repeatedly 2 to 4 times;

[0023] B, put copper crystallization: add the pure water of 4 times of this weight in the described saponification product solid that obtains after saponification separation, dissolve, add the CuSO of pasty chlorophyll weight 3% again 4 , control ...

Embodiment 2

[0027] Embodiment 2: a kind of production method of copper chlorophyllin sodium salt is raw material with pasty chlorophyll, comprises the following steps:

[0028] a. Saponification separation: directly add NaOH solution to the pasty chlorophyll and stir until PH = 12-14, control the temperature at 40°C, react for 90 minutes, control the stirring speed at 120 r / min, add paste to the reactant after saponification reaction Dissolve in acetone 5 times the weight of chlorophyll, control the temperature at 45°C, and control the stirring speed at 160 r / min to form a solid-liquid phase, and obtain a saponified solid through solid-liquid filtration, then add 1 to 2 times acetone to wash repeatedly 2 to 4 times;

[0029] B, put copper crystallization: add the pure water of 5 times of this weight to dissolve in the described saponification product solid obtained after saponification separation, then add the CuSO of pasty chlorophyll weight 4% 4 , control the temperature at 60°C, place...

Embodiment 3

[0032] Embodiment 3: a kind of production method of copper chlorophyllin sodium salt is raw material with pasty chlorophyll, comprises the following steps:

[0033] a. Saponification separation: directly add NaOH solution to the pasty chlorophyll and stir until PH = 12-14, control the temperature at 60°C, react for 70 minutes, control the stirring speed at 60 r / min, add paste to the reactant after saponification reaction Dissolve acetone that is 4 times the weight of chlorophyll, control the temperature at 35°C, and control the stirring speed at 80 r / min to form a solid-liquid phase, and obtain a saponified solid through solid-liquid filtration, and then add 1 to 2 times of acetone to wash repeatedly 2 to 4 times;

[0034] B, put copper crystallization: add the pure water of 4 times of this weight to dissolve in the described saponification product solid that obtains after saponification separation, add the CuSO of pasty chlorophyll weight 3% again 4, control the temperature ...

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Abstract

The invention discloses a production method of sodium copper chlorophyllin. With chlorophyll paste as the raw material, the method comprises the steps of: adding a NaOH solution into the chlorophyll paste for a saponification reaction, then conducting saponification and separation, adding copper for crystallization, precipitation and purification, salt formation and drying, thus obtaining a sodium copper chlorophyllin finished product. The solid and liquid are separated during the whole production course. The production method of the invention thoroughly solves various disadvantages of liquid-liquid separation in prior art, eradicates labour-consuming and time-consuming liquid-liquid separation difficult to control in production, and realizes solid-liquid separation in the whole course, thus reducing equipment investment by 30%, saving energy and reducing consumption by 40%, enhancing product yield by over 5%. The production method provided in the invention has the characteristics of high production efficiency, less solvent kind, obvious energy saving and emission reduction effect, as well as low production cost, etc.

Description

technical field [0001] The invention relates to a method for fine chemical industry to prepare natural pigments, in particular to a production method for sodium copper chlorophyllin. Background technique [0002] The traditional process of producing sodium copper chlorophyllin by using pasty chlorophyll is: add two kinds of solvents to the pasty chlorophyll to dissolve and saponify, then separate → add ethanol to adjust the saponification solution, then add copper sulfate to place copper → wash with water, ethanol, petroleum ether to remove impurities and purify → Refined cupric acid was salted with sodium, filtered and dried to obtain copper chlorophyllin sodium salt. Invention patent "Patent No. ZL200710061547.2", invention patent "Patent No. ZL01128942.2" and other processes of saponification use ethanol (or acetone) and gasoline (or petroleum ether) for repeated dissolution and washing, static layering, liquid-liquid Separating the saponifiable and unsaponifiable, and t...

Claims

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Application Information

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IPC IPC(8): C07D487/22C09B61/00
Inventor 周定志樊平原朱万岭
Owner 四川通世达生物科技有限公司
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