Apparatus and method for flash vaporization continuous crystallization of calcium gluconate, and applications of method and apparatus

A calcium gluconate and vacuum technology, which is applied to the general layout of the crystallization device, evaporation separation crystallization, solution crystallization, etc., can solve the problems of uneven crystal particle size, low degree of automation, and affecting product quality, and achieve a concise crystallization process. Improvement of labor efficiency and labor productivity, effect of small footprint

Pending Publication Date: 2019-12-13
ENERGY RES INST OF SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the refining process, more than 95% of the crystallization section uses static crystallization. The evaporation, concentration and crystallization link is directly related to the production cost and product quality of the product. The static crystallization has high labor intensity, low discharge efficiency, high energy consumption, and occupies an area of Large size, low degree of automation, etc., more importantly, uneven crystal size and difficult dehydration, which seriously affect the quality of the product

Method used

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  • Apparatus and method for flash vaporization continuous crystallization of calcium gluconate, and applications of method and apparatus
  • Apparatus and method for flash vaporization continuous crystallization of calcium gluconate, and applications of method and apparatus

Examples

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Embodiment 1

[0049] refer to figure 1 , a device for vacuum flash continuous crystallization of calcium gluconate, comprising: a first dissolution tank 1, an oxidation reaction tank 2, a plate and frame filter press 3, a primary nanofiltration membrane concentration device 4, a second dissolution tank 5, a heating Chamber 6, single-effect vacuum cooling flash crystallization device, slurry tank 10, centrifuge 11, granulator 12, internal heating fluidized bed drying device 13; wherein, the outlet of the first dissolution tank 1 is connected through a thick slurry pump The inlet of the oxidation reaction tank 2, the outlet of the oxidation reaction tank 2 is connected to the inlet of the plate and frame filter press 3, and the outlet of the plate and frame filter press 3 is connected to the primary nanofiltration membrane concentration device 4 through a security filter , the primary nanofiltration membrane concentration device 4 is connected to the second dissolution tank 5, and the second ...

Embodiment 2

[0054] A vacuum flash continuous crystallization device for calcium gluconate, the same as in Example 1, the difference is that the ratio of the straight cylinder section to the cone section of the vacuum flash cooling crystallizer 8 is 3:2. The nanofiltration membrane in the first-stage nanofiltration membrane concentration device 4 is a flat nanofiltration membrane. The slurry outlet has a length of 70 μm and a diameter of 100 μm.

Embodiment 3

[0056] refer to figure 2 A method for calcium gluconate vacuum flash continuous crystallization adopts the device described in embodiment 1 to implement, comprising the steps:

[0057] Calcium gluconate formula is as shown in table 1:

[0058] Table 1

[0059] raw material Dosage ratio% Amount added kg purity level glucose 100 6000 pharmaceutical grade or food grade calcium carbonate 30 1800 industrial grade or food grade glucose oxidase 0.25 15 industrial grade or food grade Catalase 0.2 12 industrial grade or food grade

[0060] Note: raw material consumption ratio % in table 1 refers to the consumption weight % of other raw materials needed based on raw material glucose conversion 100% dry basis (hereinafter the same).

[0061] S1. Dissolving to constant volume: first add about 30m of purified water into the dissolving tank 3 , turn on the stirrer, add 6000kg glucose, 1800kg calcium carbonate, 2kg defoamer, 15kg gl...

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Abstract

The invention relates to the technical field of calcium gluconate crystallization, particularly to an apparatus and a method for flash vaporization continuous crystallization of calcium gluconate, andapplications of the method and the apparatus. The apparatus comprises a first dissolving tank, an oxidation reaction tank, a plate-and-frame filter press, a first-stage nano-filtration membrane concentration device, a second dissolving tank, a heating chamber, a single-effect vacuum cooling flash vaporization crystallization device, a slurry groove, a centrifugal machine, a granulator and an internal heating fluidized bed drying device. The method comprises: dissolving and volume metering, enzyme oxidation, enzyme deactivation and filtration, concentrating, dissolving and decolorizing, circulating filtration, finished product crystallization, centrifugal washing, and granulating drying. According to the present invention, the apparatus has advantages of high energy utilization rate, smalloccupation area, low investment cost, high labor productivity, automatic control, uniform crystallization granularity, adjustability within a certain range, no scaling, no scabbing, and long-term continuous production.

Description

technical field [0001] The invention relates to the technical field of calcium gluconate crystallization, in particular to a device, method and application of vacuum flash continuous crystallization of calcium gluconate. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Calcium gluconate is white crystalline or granular powder, melting point 201°C (decomposition), odorless, tasteless, easily soluble in boiling water (20g / 100ml), slightly soluble in cold water (3g / 100ml, 20°C), insoluble in ethanol Or organic solvents such as ether. The aqueous solution is neutral (pH about 6-7). Calcium gluconate is mainly used as calcium fortifier and nutrient, buffer, curi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02C07C59/105C07C51/43
CPCB01D9/0022B01D9/0059C07C51/43C07C59/105
Inventor 赵改菊孙荣峰尹凤交耿文广员冬玲王鲁元
Owner ENERGY RES INST OF SHANDONG ACAD OF SCI
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