Method and device for continuously dynamic crystallization production of calcium lactate
A calcium lactate and crystallization technology, applied in solution crystallization, separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve problems such as restricting the development of calcium lactate industry, high labor intensity, and large equipment footprint
Active Publication Date: 2010-04-14
河南金丹乳酸科技股份有限公司
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Problems solved by technology
The crystallization process is a natural process, with a cycle of at least three days; the equipment covers a huge area, and if the annual output of calcium lactate is 3,000 tons, more than 400 crystallization boxes are needed, and the operation process covers an area of tens of thousands of square meters; each The crystallization box has to be flipped several times in the early stage, the labor intensity is high, and the output is low, it is difficult to form a large-scale production, let alone the application of automatic control
Since the crystallization process uses a crystallization box for natural crystallization, the entire intermediate process is exposed to a complex bacterial environment, so it is difficult for its products to reach food grade or pharmaceutical grade calcium lactate
Traditional production methods have seriously restricted the development of calcium lactate industry
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[0014] figure 1 Schematic diagram of the equipment for producing calcium lactate for the continuous dynamic crystallization of the present invention. Combine below figure 1 , the equipment and the method for producing calcium lactate through continuous dynamic crystallization using the equipment are described together.
[0015] Using corn or rice as the main raw material, the calcium lactate feed liquid is obtained through sugar refining and microbial fermentation, and then filtered and concentrated, so that the weight concentration of the filtered and concentrated calcium lactate feed liquid is 20% to 60%; the filtered and concentrated calcium lactate After the feed liquid is cooled by the first cooler 1-1 to 50°C-70°C, it is pumped into the transfer tank 3 by the first transfer pump 1-2, and stirred by the agitator 1-4 installed in the transfer tank 3 , the stirring speed is 30rpm~120rpm, the temperature measured by the thermometer 1-5 provided in the transfer tank 3 shoul...
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The invention provides a method for continuously dynamic crystallization production of calcium lactate and a device for implementing the method. The method comprises steps as follows: filtering and concentrating calcium lactate feed liquor generated via fermentation, and keeping weight concentration of the filtered and concentrated calcium lactate feed liquor within 20%-60%; cooling the filtered and concentrated calcium lactate feed liquor to a temperature ranging from 50 DEG C to 70 DEG C, and stirring the cooled calcium lactate feed liquor after being pumped into a transfer tank; further cooling the calcium lactate feed liquor to a temperature ranging from 20 DEG C to 50 DEG C, and stirring the cooled calcium lactate feed liquor after being pumped into a crystallizer to generate crystal mush; cooling the crystal mush in the crystallizer to a temperature ranging from 5 DEG C to 30 DEG C, and stirring the cooled crystal mush after being pumped into a recrystallizing tank and growing crystal; and finally generating calcium lactate crystal after filtering and separating. The device for implementing the method comprises at least three stirring containers which are sequentially communicated via coolers. The method can realize continuously dynamic crystallization of calcium lactate and large scale production.
Description
technical field [0001] The invention relates to a method and equipment for producing calcium lactate by crystallization. Background technique [0002] At present, the traditional domestic production of calcium lactate is mostly extensive crystallization production, that is, the use of microbial fermentation to obtain a calcium lactate dilute solution, which is heated or concentrated to obtain a 30% to 40% calcium lactate solution, and then the material solution is placed in the crystallization box to naturally Evaporation and crystallization, the crystals are produced, and the calcium lactate product is obtained through washing, dissolving, filtering, and secondary crystallization. The crystallization process is a natural process, with a cycle of at least three days; the equipment covers a huge area, and if the annual output of calcium lactate is 3,000 tons, more than 400 crystallization boxes are needed, and the operation process covers an area of tens of thousands of squ...
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IPC IPC(8): C07C59/08C07C51/43B01D9/02
Inventor 于培星丁楠胡中华马凯歌刘晓东尚艳秋杨清翔顾永华孙自华刘雁
Owner 河南金丹乳酸科技股份有限公司