Purifying method for calcium gluconate solution
A calcium gluconate and purification method technology, applied in the separation/purification of carboxylic acid compounds, etc., can solve the problems of calcium gluconate quality damage, complicated purification process, reduced product yield, etc., to avoid low product yield and process. Simple, quality and yield-enhancing effects
Inactive Publication Date: 2016-10-12
韦彩勇
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Problems solved by technology
Since the calcium gluconate solution is concentrated at high temperature, it will damage the quality of calcium gluconate; while washing with water to remove impurities such as pigments, proteins and polysaccharides in the calcium gluconate crystals, it will also be reduced accordingly. The yield of the product is improved; and its purification process is complicated, the cost is high, and the environmental pollution is relatively large
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0006] The calcium gluconate solution is first ultrafiltered through a membrane device at a temperature of 10-50°C. The ultrafiltration precision is 20,000 molecular weight to filter out macromolecular impurities such as pigments, proteins, and polysaccharides in the solution; The filtered solution is subjected to nanofiltration through a membrane device with a nanofiltration precision of 500 molecular weight to filter out most of the water, so that the concentration of the solution reaches 10%, which can be crystallized smoothly and generate solid calcium gluconate at one time.
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The invention discloses a method for purifying calcium gluconate solution. The key points of the technology are: the calcium gluconate solution is first ultrafiltered through a membrane device to filter out macromolecular impurities such as pigments, proteins and polysaccharides in the solution, and then the ultrafiltered solution is nanofiltered through a membrane device to filter Remove most of the water therein and make the concentration of the solution reach 10%, then crystallize smoothly and generate solid calcium gluconate at one time. Due to the concentration and removal of impurities of calcium gluconate solution under normal temperature conditions, the quality and yield of the product are effectively improved; and under the premise of not increasing power consumption, the coal consumption of steam concentration and the cost of impurity cleaning are eliminated. Water consumes two costs, and the filtered water is of good quality, so there will be no waste water pollution. In addition, the process of the present invention is simple, the equipment cost is low, and the operation is easy.
Description
technical field [0001] The invention relates to a method for purifying calcium gluconate solution, which belongs to the technical field of medicine and chemical industry. Background technique [0002] At present, the purification of calcium gluconate solution usually uses the evaporator to concentrate the water in the solution with the high temperature generated by steam, and then crystallizes the concentrated calcium gluconate, and then uses a centrifuge to wash off the calcium gluconate with water. Impurities such as pigments, proteins and polysaccharides in crystals. Since the calcium gluconate solution is concentrated at high temperature, it will damage the quality of calcium gluconate; while washing with water to remove impurities such as pigments, proteins and polysaccharides in the calcium gluconate crystals, it will also be reduced accordingly. The yield of the product is reduced; and its purification process is complicated, the cost is high, and the environmental p...
Claims
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Login to View More IPC IPC(8): C07C51/42C07C51/43C07C59/105
CPCC07C51/42C07C51/43
Inventor 韦彩勇
Owner 韦彩勇
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