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Method for removing calcium and magnesium ions in cane molasses

A technology of sugarcane molasses and calcium and magnesium ions, which is applied in sucrose production, sugar production, and purification of sugar juice, etc., can solve the problems of insufficient sugarcane molasses desalination, large consumption, and large dosage, and achieves feasibility and overcomes The effect of high cost and low dosage

Inactive Publication Date: 2016-07-20
邹传军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet in the processing of sugarcane molasses, because the pH value of sugarcane molasses is about 4.5, contains a large amount of organic acids, needs to consume a large amount of soda ash, just can calcium and magnesium be completely precipitated; In this process, the pH value of sugarcane molasses improves a lot, Cause many side reactions, this method has no industrial value
Other commonly used chemicals for removing calcium and magnesium, including sodium sulfate, sodium sulfite, sodium oxalate, etc., are used to remove calcium and magnesium from sugarcane molasses, but the effect is not good or the amount is too large, and there is no industrial production value
[0006] 3) Commonly used desalination equipment - electrodialysis, because sugarcane molasses contains a large amount of calcium magnesium ions and sulfate ions, calcium sulfate precipitation will form on the surface of the electrodialysis membrane, causing pollution that is difficult to clean, making the electrodialysis equipment unable to operate , can not achieve the purpose of sugarcane molasses desalination
[0007] As can be seen from the above, the above three methods are all unsuitable for industrialized large-scale production, and there is an urgent need for an economical and applicable method for removing calcium and magnesium ions in sugarcane molasses that is suitable for industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) take by weighing 1 kilogram of sugarcane molasses, its mass fraction is 82%, adopt the EDTA method to detect the total content of calcium and magnesium ions in the sugarcane molasses to be 9800ppm, add pure water to dilute and obtain the aqueous solution of sugarcane molasses with a mass fraction of 60%;

[0026] 2) Slowly add 22 grams of sodium fluoride into 100 grams of pure water, stir while adding, and heat to 90°C to obtain a sodium fluoride suspension;

[0027] 3) Heat all the aqueous solution of sugarcane molasses in step 1) at a rate of 3°C / s from room temperature to 90°C, then slowly add all the fluoride suspension to the aqueous solution of sugarcane molasses, stir while adding, and keep stirring for 2 hours ; Filtrate with a vacuum drum filter to remove calcium fluoride, magnesium fluoride and other precipitates, and the filtrate is sugarcane molasses 1 that does not contain calcium and magnesium ions.

[0028] Detected by the above method, the total conte...

Embodiment 2

[0030] 1) take by weighing 1 kilogram of sugarcane molasses, its mass fraction is 82%, adopt the EDTA method to detect the total content of calcium and magnesium ions in the sugarcane molasses to be 10500ppm, add pure water to dilute and obtain the aqueous solution of sugarcane molasses with a mass fraction of 55%;

[0031] 2) Slowly add 23 grams of sodium fluoride into 100 grams of pure water, stir while adding, and heat to 90°C to obtain a sodium fluoride suspension;

[0032] 3) Heat all the aqueous solution of sugarcane molasses in step 1) at a rate of 5°C / s from room temperature to 90°C, then slowly add all the fluoride suspension to the aqueous solution of sugarcane molasses, stir while adding, and keep stirring for 2 hours ; Sedimentation and separation with a centrifuge to remove the precipitate, and the supernatant is sugarcane molasses 2 that does not contain calcium and magnesium ions.

[0033] Detected by the above method, the total content of calcium and magnesium ...

Embodiment 3

[0035] 1) take by weighing 1 kilogram of sugarcane molasses, its mass fraction is 82%, adopt EDTA method to detect the total content of calcium and magnesium ions in the sugarcane molasses to be 11500ppm, add pure water to dilute and obtain massfraction and be the aqueous solution of sugarcane molasses of 58%;

[0036] 2) Slowly add 24 grams of sodium fluoride into 100 grams of pure water, stir while adding, heat to 85°C, stir and keep warm for 1 hour, and obtain a sodium fluoride suspension;

[0037] 3) Heat all the aqueous solution of sugarcane molasses in step 1) at a rate of 5°C / s from room temperature to 85°C, then slowly add all the fluoride suspension to the aqueous solution of sugarcane molasses, stir while adding, and keep stirring for 1 hour ; Remove sediment with a plate and frame filter, and the filtrate is sugarcane molasses 3 that does not contain calcium and magnesium ions.

[0038] Detected by the above method, the total content of calcium and magnesium ions in...

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PUM

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Abstract

The invention discloses a method for removing calcium and magnesium ions in cane molasses. The method comprises the following steps of firstly, diluting the cane molasses with purified water into an aqueous solution of the cane molasses; weighing fluoride and slowly adding the fluoride into hot water of which the temperature is 80 to 90DEG C to obtain fluoride suspension or solution; slowly adding the fluoride suspension or solution into cane molasses water, simultaneously adding and stirring, and removing precipitate to obtain the cane molasses without the calcium and magnesium ions. According to the method disclosed by the invention, an effect of removing the calcium and magnesium ions in the cane molasses by adopting the fluoride is good, and the removal rate can reach 100 percent; the method needs lower consumption of fluoride, and is low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of sugarcane molasses, in particular to a method for removing calcium and magnesium ions in sugarcane molasses. Background technique [0002] Cane molasses is a by-product of sucrose crystallization. The main components that can be used include 25%-35% sucrose and 13-23% reducing sugar. It is an important raw material for the fermentation industry. Sugarcane molasses also contains a large amount of inorganic substances, the sulfate ash content is about 10%, which contains 1-2% calcium and magnesium ions, which have a lot of adverse effects on the production process. For example, in the production of molasses monosodium glutamate, the presence of calcium ions, Affect the crystallization of glutamic acid. In the production of molasses alcohol, calcium and magnesium ions are easy to scale, which affects the evaporation and concentration of alcohol waste liquid. In the production process of molasses caramel pigment, the e...

Claims

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Application Information

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IPC IPC(8): C13B20/00C13B50/00
CPCC13B20/005C13B50/006
Inventor 邹传军
Owner 邹传军
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