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Preparation process and application of calcium magnesium acetate

A preparation technology of calcium magnesium acetate, applied in carboxylate preparation, carboxylate preparation, organic compound preparation, etc., can solve problems such as damage, human health hazards, water pollution, etc., and achieve control of air pollution and equipment investment Less and more productive

Active Publication Date: 2015-02-18
LAIZHOU LAIYU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If road drainage containing chlorine salt, nitrate dust suppressant and snow melting agent flows into rivers and lakes, it will pollute the water body; if it seeps into groundwater, drinking this water will also cause harm to human health
[0007] (3) From the aspect of corrosion: the water containing chlorine salt, nitrate dust suppressant and snow melting agent will cause corrosion or even serious damage to reinforced concrete pavement, bridges and sewer pipes

Method used

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  • Preparation process and application of calcium magnesium acetate
  • Preparation process and application of calcium magnesium acetate
  • Preparation process and application of calcium magnesium acetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 It is a process flow diagram for the preparation of calcium magnesium acetate. Such as figure 1 Shown, the preparation technology of calcium magnesium acetate (CMA) comprises the following processing steps:

[0045] (1) Preparation of calcium magnesium acetate solution: 8.9kg of quicklime and 34kg of magnesium oxide are added to the reactor according to the molar ratio of calcium and magnesium in the reaction raw materials is 6:4, and then 60kg of water is added to the reactor to meet the requirements of water and quicklime and oxidation The mass ratio of the total amount of magnesium is 1.4:1. After fully stirring, 97.1kg of acetic acid is added for reaction. The reaction temperature is kept at 70-80°C. When the pH value of the solution is 7-8, stop adding acetic acid. Finally, the total amount of acetic acid and quicklime The molar ratio to the total amount of magnesium oxide is 3.6:1, and then stirred and reacted for 4 to 5 hours to obtain calcium magnesiu...

Embodiment 2

[0051] (1) Preparation of calcium magnesium acetate solution: 8.9kg of quicklime and 27kg of magnesium oxide are added to the reactor according to the molar ratio of calcium and magnesium in the reaction raw materials of 6.5:3.5, and then 60kg of water is added to the reactor to meet the requirements of water and quicklime and oxidation The mass ratio of the total amount of magnesium is 1.7:1. After fully stirring, add 80.1kg of acetic acid to react. The reaction temperature is kept at 70-80°C. When the pH value of the solution is 7-8, stop adding acetic acid. Finally, the total amount of acetic acid and quicklime The molar ratio to the total amount of magnesium oxide is 4:1, and then stirred and reacted for 4 to 5 hours to obtain calcium magnesium acetate solution;

[0052] (2) press filtration: the calcium magnesium acetate solution that reacts carries out solid-liquid separation through filter press again, promptly obtains feed liquid and filter residue of calcium magnesium ...

Embodiment 3

[0057] (1) Preparation of calcium magnesium acetate solution: 8.9kg of quicklime and 22kg of magnesium oxide are added to the reaction kettle according to the molar ratio of calcium and magnesium in the reaction raw materials being 7:3, and then 60kg of water is added to the reaction kettle to meet the requirements of water and quicklime and oxidation. The mass ratio of the total amount of magnesium is 1.9:1. After fully stirring, 68.1kg of acetic acid is added for reaction. The reaction temperature is maintained at 70-80°C. When the pH value of the solution is 7-8, stop adding acetic acid. Finally, the total amount of acetic acid and quicklime The molar ratio to the total amount of magnesium oxide is 4.5:1, and then stirred and reacted for 4 to 5 hours to obtain calcium magnesium acetate solution;

[0058] (2) press filtration: the calcium magnesium acetate solution that reacts carries out solid-liquid separation through filter press again, promptly obtains feed liquid and fil...

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Abstract

The invention discloses a preparation process and an application of calcium magnesium acetate. The preparation process comprises the following processing steps: preparing a calcium acetate solution, and performing press filtration, MVR concentration and centrifugal spray-drying. The preparation process disclosed by the invention is simple in technical process, easy to operate, easy in raw material acquisition, free from emission of three wastes in an overall production process, high in production efficiency, high in yield, low in equipment investment, wide in application and remarkable in economic benefits. The calcium magnesium acetate prepared by the process disclosed by the invention has the functions of melting snow, deicing, resisting dust, preventing dust and controlling atmospheric pollution; as a snow melting agent, the calcium magnesium acetate is higher in snow melting capability and enables accumulated snow and ice layers to be loose so that the snow and the ice layers can be removed more easily; as a dust resisting agent, the calcium magnesium acetate can be used for removing NOx and SO2 generated by combustion of coal and HCl generated by combustion of PVC (Polyvinyl Chloride) so as to control the atmospheric pollution; moreover, the calcium magnesium acetate causes quite low corrosion to metals and causes no toxic or side effects to human, soil and plants.

Description

technical field [0001] The invention relates to the technical field of calcium magnesium acetate preparation, in particular to a preparation process and application of calcium magnesium acetate. Background technique [0002] At present, road dust pollution is serious, not only on the soil or gravel transportation roads of open-pit mines, but also on cement, asphalt, construction sites and other roads, due to the impact, rolling, and bumping of equipment and vehicle airflow, and the impact of bulk materials The amount of dust on the road surface is very large, and the problem of dust pollution is also very prominent. Moreover, our country is in a period of rapid economic development, with many construction projects, dust pollution caused by various construction projects and municipal engineering sites, mining sites, material storage yards, concrete mixing stations, demolition sites and other open dust sites such as bare ground. , It is difficult to avoid floating soil and du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C53/10C09K3/18C09K3/22
CPCC07C51/412C07C51/43C07C53/10C09K3/185C09K3/22
Inventor 姜升林
Owner LAIZHOU LAIYU CHEM CO LTD
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