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Synthesis process of calcium formate

A synthesis process, calcium formate technology, applied in carboxylate preparation, organic chemistry, etc., can solve the problems of high energy consumption, high equipment requirements, complex calcium formate synthesis process, etc., and achieve low energy consumption and simple production process technology Effect

Active Publication Date: 2010-12-15
广州九益生物技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the existing calcium formate synthesis process is relatively complicated, consumes a lot of energy, and has high requirements for equipment

Method used

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  • Synthesis process of calcium formate
  • Synthesis process of calcium formate
  • Synthesis process of calcium formate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Add the sodium formate solution of 0.2mol / L and the sodium hydroxide solution of 2mol / L respectively to the anode tank and the cathode tank of the cation exchange membrane electrodialyzer;

[0029] 2) The two ends of the anode plate and the cathode plate are connected to a DC power supply, the voltage is set to 5V, and the timing is started at the same time, and the current, voltage, and pH value of the solution in the cathode tank and the anode tank are recorded every 5 minutes;

[0030] 3) When the pH range is within ±0.1, discharge the solutions in the cathode tank and the anode tank, and add excess calcium carbonate powder to the anode tank solution to obtain a calcium formate solution.

Embodiment 2

[0032] 1) Add the sodium formate solution of 0.6mol / L and the sodium hydroxide solution of 0.01mol / L respectively to the anode tank and the cathode tank of the cation exchange membrane electrodialyzer;

[0033] 2) The two ends of the anode plate and the cathode plate are connected to a DC power supply, the voltage is set to 8V, and the timing is started at the same time, and the current, voltage, and pH value of the solution in the cathode tank and the anode tank are recorded every 5 minutes;

[0034] 3) When the pH range is within ±0.1, discharge the solutions in the cathode tank and the anode tank, and add excess calcium hydroxide powder to the anode tank solution to obtain a calcium formate solution.

Embodiment 3

[0036] 1) Add the sodium formate solution of 0.4mol / L and the sodium hydroxide solution of 0.05mol / L respectively to the anode tank and the cathode tank of the cation exchange membrane electrodialyzer;

[0037] 2) Connect the two ends of the anode plate and the cathode plate to a DC power supply, set the voltage to 9V, start timing at the same time, and record the current, voltage, and pH value of the solution in the cathode tank and the anode tank every 5 minutes;

[0038] 3) When the pH range is within ±0.1, discharge the solutions in the cathode tank and the anode tank, and add excess calcium carbonate powder to the anode tank solution to obtain a calcium formate solution.

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Abstract

The invention discloses a synthesis process of calcium formate, which comprises the following steps: respectively adding sodium formate solution and sodium hydroxide solution into an anode tank and a cathode tank of a cation-exchange membrane electric dialyzator; connecting a direct current power supply at two ends of an anode plate and a cathode plate, and simultaneously monitoring pH value of solution in the cathode tank and the anode tank; discharging the solution in the cathode tank and the anode tank when the change range of the pH value is plus or minus 0.1, adding excess calcium carbonate powder and / or calcium hydroxide powder into the solution in the anode tank and obtaining the solution of the calcium formate. The production process has simple process and low energy consumption, and is a green process.

Description

technical field [0001] The invention relates to a synthesis process of calcium formate. Background technique [0002] Calcium formate is a widely used reagent newly developed at home and abroad. It can be used for desulfurization of fuel gas released from high-sulfur fuel combustion, and can also be used as an intermediate for the preparation of oxalic acid. In addition, it can also be used as a feed additive, food industry additive, and petroleum industry. Drilling aids, plant growth regulators, coal brick adhesives, lubricants, building materials additives, leather industry additives, fiber auxiliary materials, etc. [0003] As the demand for calcium formate continues to expand, the price of calcium formate products imported from Europe to the east coast of the United States is about 1,300 US dollars / ton, and the ex-factory price of calcium formate products currently produced in China is about 6,000 yuan / ton. Especially since 1998, after the 14 kinds of feed additives iss...

Claims

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Application Information

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IPC IPC(8): C07C53/06C07C51/41
Inventor 舒绪刚尹国强廖烈文蔡英华崔志英
Owner 广州九益生物技术有限公司
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