Preparation method of glycine complex zinc salt premix and production system thereof

Abstract

The invention relates to a preparation method and device of a green and environment-friendly glycine complex zinc salt and a preparation method of a glycine complex zinc salt premix. The method includes the steps that (1) establishing a pre-judgment model according to the type of the glycine complex zinc salt; (2) performing X-single crystal diffraction on the obtained glycine complex zinc salt tojudge the type of the glycine complex zinc salt; and (3) adding corresponding auxiliary materials according to the type of the obtained glycine complex zinc salt to obtain the corresponding glycine complex zinc salt premix. According to the preparation method, a high-purity zinc glycinate complex salt and the zinc glycinate complex salt premix with high complexing rate can be obtained, and a product is high in chemical property and physical property stability and is more suitable for being used as a feed agent.

Description

technical field [0001] The invention belongs to the field of organic feed, and in particular relates to a preparation method of a glycine complex zinc salt premix and a production system thereof. [0002] technical background [0003] The trace elements in inorganic trace additives are mainly inorganic mineral salts. The use of inorganic trace element additives in food and feed mainly has the following problems: (1) Inorganic metal ions are easy to form insoluble compounds with fiber and oxalic acid in the stomach, and at the same time produce antagonism with other nutrients, resulting in low absorption and utilization; ( 2) Inorganic metal ions are easy to oxidize and inactivate certain vitamins; (3) It has a stimulating effect on the intestinal tract and increases the incidence of digestive tract diseases; discharged, causing pollution to the environment. [0004] The replacement of inorganic mineral salts with organic trace element chelates as additives can solve the pro...

AI Technical Summary

Problems solved by technology

The use of inorganic trace element additives in food and feed mainly has the following problems: (1) Inorganic metal ions are easy to form insoluble compounds with fiber and oxalic acid in the stomach, and at the same time produce antagonism with other nutrients, resulting in low absorption and utilization; ( 2) Inorganic metal ions are easy to oxidize and inactivate certain vitamins; (3) It has a stimulating effect on the intestinal tract and increases the incidence of digestive tract diseases; discharge, pollute the environment

This process has some obvious disadvantages: it is necessary to adjust the pH value of the solution with acid and alkali, and it is easy to introduce impurity ions; the reaction time is too long, which is not conducive to large-scale production

And the usual production method of zinc glycinate is to make with glycine and zinc oxide or basic zinc carbonate reaction, and its shortcoming is: (1) gained zinc glycinate is viscous, is not easy to dry; It is inconvenient to use in production, and it is easy to cause local high zinc content in feed products, which will lead to animal poisoning or even death

However, there are disadvantages in this method: the use of iron powder in the preparation process leads to the inclusion of glycine complex ferrous or ferrous sulfate in the product, thereby affecting the quality of the product; organic solvent washing is carried out in the process of product washing, resulting in the use of a large amount of organic solvents, pollute the environment and increase production costs; the resulting product contains a large amount of crystal water, so the zinc content in the product is low

The problem that this method exists is: zinc salt reacts with sodium hydroxide first, generates zinc hydroxide or zinc oxide, by-product sodium sulfate or sodium chloride aqueous solution, consumes a large amount of sodium hydroxide, produces difficult-to-handle saline waste water; Zinc oxide or zinc hydroxide and glycine cannot react completely, resulting in zinc oxide entrainment in the product, thus affecting the quality of the product

[0011] At present, the production method of glycine complex (chelated) zinc usually utilizes glycine and zinc sulfate or zinc chloride, adjusts the pH value with sodium hydroxide, or glycine directly reacts with zinc oxide or basic zinc carbonate, but such methods exist The following problems: it is necessary to use sodium hydroxide to adjust the pH value, consume a large amount of sodium hydroxide, and produce a large amount of inorganic acid salts by-product; the production process is complicated, and the glycine complex (chelated) zinc needs to use an organic solvent as a separating agent. Expensive prices and cumbersome waste water recovery and treatment process are also the main reasons for the high price of amino acid trace element complex (chelate) compounds; when producing 2:1 type glycine chelated zinc, excessive glycine is required, which is inevitable The glycine is lost and the discharged waste water contains glycine; in the drying process, the water evaporates slowly and is easy to agglomerate; the dried products need to be crushed and sieved, resulting in a large amount of dust, resulting in a poor production environment and difficult for enterprises to Mass production; the effective complexation rate of zinc is low, the bioavailability is low, and the product quality is unstable. Because zinc oxide and basic zinc carbonate have good stability, zinc ions cannot be dissociated well, and glycine complex (chelate) zinc It often contains inorganic zinc salts, or when sodium hydroxide is used to adjust the pH, resulting in the inclusion of zinc oxide in the product, which affects the quality of the product; a large amount of saline wastewater that is difficult to handle is generated, so that the wastewater not only contains high salt, but also contains The COD is very high, and the cost of processing is very high, thereby limiting the large-scale production of glycine complexed zinc and increasing the production cost of the product

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