A device for industrialized preparation of calcium glycinate and corresponding production method of calcium glycinate

Abstract

The invention relates to a device for industrially preparing calcium glycinate and a corresponding production method for calcium glycinate. Glycine, calcium oxide or calcium hydroxide and their mixtures are used as raw materials, conveyed to the reverse twin-screw extrusion granulator through two sets of feeding-mixing equipment, mixed with water, and then granulated and conveyed to the same direction Reaction and impurity removal are carried out in the twin-screw extrusion reactor. The obtained product enters the rotary flash dryer for drying and then sieves. The qualified product is subjected to subsequent homogeneous packaging treatment. Steam dryer. The present invention not only realizes the industrialized large-scale production of calcium glycinate, but also creatively introduces a twin-screw extruder as an all-in-one production equipment for mixing, reacting, conveying, and impurity removal, and has the advantages of simple process, high degree of automation, and unit time With the advantages of high yield and good product quality, it saves the essential alkali and acid removal operations in the traditional synthesis method, and has achieved good economic benefits in practical applications.

Description

technical field [0001] The invention relates to the field of food technology, in particular to a device for industrially preparing calcium glycinate composed of a reactive co-rotating twin-screw extruder and a production method thereof. Background technique [0002] Calcium is very important for maintaining normal physiological activities of the human body. If the calcium intake is insufficient, symptoms such as rickets, osteomalacia, and osteoporosis will appear, and calcium supplements need to be taken at this time. Calcium glycinate, calcium aspartate and calcium threonate are the first generation of calcium supplements - inorganic calcium (calcium carbonate, calcium phosphate, calcium chloride, calcium hydrogen phosphate, calcium sulfate and bone meal, egg shell, shell powder etc.), after the second generation of calcium supplements—organic calcium (calcium acetate, calcium gluconate, calcium citrate, calcium lactate, etc.), a new generation of calcium supplements that ...

AI Technical Summary

Problems solved by technology

However, these synthetic methods have only achieved success in the laboratory, and have not carried out industrial scale-up production or pilot tests. There is still a long way to go from the laboratory to the factory.

This is because there are huge differences between the laboratory and the factory: ① For the mixing problem, the laboratory usually feeds materials of a few grams, tens of grams, and at most a hundred grams, and the reactor is usually a beaker, mortar, or crucible of tens of milliliters, so there is no need to think too much The problem of material mixing and dispersion; while industrial production is often hundreds of kilograms of batch feeding, how to stably and continuously convey and evenly mix materials is a thorny problem; Process parameters such as heat dissipation and transportation are also very important for how to effectively dissipate heat in the exothermic reaction so that the system temperature will not fluctuate violently, and how to separate and purify the materials after the reaction; Use expensive raw materials such as sodium glutamate at any cost, as well as complex processes and related devices such as microwave and high-temperature melting, but for industrial production, it is necessary to strive for cheap and easy-to-obtain raw materials, simple processes, and easy implementation

Although the Chinese patent CN106146328A discloses a method for industrially preparing glycine chelated calcium using glycine, calcium oxide, and calcium acetate as raw materials, the method needs to consume a large amount of water and ethanol (flammable and volatile) on the one hand, which makes the production cost of the enterprise and Environmental protection and safety risks are greatly increased; on the other hand, the method is relatively complicated to operate, and it takes a long time (more than 12 hours) to obtain the product each time. The separation of synthesis and purification is not conducive to continuous production, and the reaction environment of each batch is not easy to control. Product stability is not good enough

The heat transfer efficiency of the traditional reactor is low, even if it reaches the limit value, it is difficult to meet the reaction with large heat release. The reactive screw extruder solves this problem better

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