Device for reducing ferric iron in amino acid iron
The trivalent iron in the amino acid iron mother liquor is reduced through the iron filing fixed bed and the mother liquor circulation device, which solves the problem of trivalent iron oxidation in the mother liquor, and realizes an efficient and simple trivalent iron reduction process to ensure the pure product.
Patent Information
- Application Number
- CN202422672874.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-04
AI Technical Summary
The prior art is difficult to effectively control the oxidation of trivalent iron in the mother liquor during the production process of amino acid iron chelates, resulting in the exceeding of the standard of trivalent iron and the introduction of new impurities, which is complex in operation and high in cost.
The device using an iron filing fixed bed and a mother liquor circulation pump is used to contact the iron filings through the mother liquor circulation, and the trivalent iron is reduced to divalent iron. The reducing properties of the iron filings are used to convert the trivalent iron into divalent iron, and impurities are removed through the filter device, and the reaction efficiency is improved in combination with the insulation device.
The rapid reduction of trivalent iron in the mother liquor to divalent iron is achieved, ensuring that the product quality does not exceed the standard and no new impurities are introduced, and it is simple to operate and easy to control.
Smart Images
Figure CN223263797U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of feed additive production equipment, in particular to an amino acid iron chelate processing device. Background Art
[0002] Iron is an essential trace element for all living things and is present in high concentrations. It plays a crucial role in maintaining health, and many vital processes in the body rely on it. There are various ways to categorize iron in the human body, the most common being the division of functional iron and non-functional storage iron based on its function. Functional iron, which accounts for 70% of the body's total iron, is primarily found in oxygen-carrying globulins such as hemoglobin, myoglobin, and neuroglobin, as well as in heme enzymes and some cofactors. It plays an essential role in the respiratory chain and is primarily found in heme, which contains a porphyrin ring. Non-functional storage iron, primarily in the form of ferritin and hemosiderin, is primarily distributed in the liver, spleen, and bone marrow, often figuratively referred to as the body's iron depot.
[0003] At present, there are many iron preparations used for animal iron supplementation. Among them, amino acid iron chelates (complexes) are increasingly valued by the animal husbandry industry due to their high bioavailability and easy absorption by the body. Gradually replacing inorganic iron preparations will be an inevitable trend in the future.
[0004] The amino acid iron chelates (complexes) currently used for feed additives include ferrous glycine, ferrous threonine, ferrous glutamate, ferrous methionine, and ferrous lysine. The production process for these amino acid iron chelates (complexes) is typically carried out in a synthesis reactor. After the reaction, the reaction liquid is crystallized and centrifuged to obtain the product and mother liquor, which is generally used for the next batch of synthesis reactions. Because divalent iron is easily oxidized to trivalent iron, to prevent oxidation, manufacturers use reducing agents such as sodium sulfite, ascorbic acid, reducing metal iron powder, and zinc powder to control divalent iron oxidation. This method is difficult to control the amount of reducing agent added, and excessive addition introduces new impurities into the product. Furthermore, some reducing agents themselves produce other impurities after the reaction. Some manufacturers also use inert gas to isolate oxygen to prevent divalent iron oxidation, but this is difficult to control and is costly. Utility Model Content
[0005] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology and provide a device for reducing the trivalent iron in amino acid iron, which can quickly and fully reduce the trivalent iron in the mother liquor to divalent iron, ensure that the trivalent iron does not exceed the standard and does not introduce new impurities.
[0006] In order to solve the above technical problems, the technical solutions proposed by the present invention are as follows:
[0007] A device for reducing trivalent iron in amino acid iron comprises an iron filings fixed bed and a mother liquor tank for storing mother liquor after centrifugation of amino acid iron crystals, wherein the lower outlet of the mother liquor tank is connected to the lower inlet of the iron filings fixed bed via a first connecting pipe, and the upper outlet of the iron filings fixed bed is connected to the upper inlet of the mother liquor tank via a second connecting pipe, and the first connecting pipe is provided with a mother liquor circulation pump for pumping the mother liquor in the mother liquor tank into the iron filings fixed bed. The mother liquor in the mother liquor tank is pumped into the iron filings fixed bed via the mother liquor circulation pump through the first connecting pipe, and the mother liquor flows from bottom to top, wherein the trivalent iron therein contacts the iron filings, is reduced to divalent iron by the elemental iron in the iron filings, and then flows back into the mother liquor tank, and is then pumped into the iron filings fixed bed via the mother liquor circulation pump for circulation until the trivalent iron in the mother liquor is qualified.
[0008] In the above device, preferably, the iron chip fixed bed comprises a cylinder, upper and lower sieve plates, and iron chips, wherein the iron chips are arranged in a partition formed by the upper and lower sieve plates. The upper and lower sieve plates facilitate uniform passage of the mother liquor and reaction with the iron chips, and prevent the iron chips from flowing into the mother liquor tank along with the flow of the mother liquor.
[0009] In the above device, preferably, the second connecting pipe is further provided with a filtering device for further filtering the reducing liquid discharged from the fixed iron bed to remove elemental iron. When the iron chips in the fixed iron bed are too fine, they may be carried away by the reducing liquid. The present invention further removes elemental iron by providing a filtering device, thereby facilitating the recycling of the mother liquid.
[0010] In the above device, preferably, the outer wall of the mother liquor tank is provided with a heat preservation device for increasing the temperature of the mother liquor. The heat preservation device provided can preheat the mother liquor in the mother liquor tank, increase the reaction rate, promote the reduction reaction, and quickly reduce the ferric iron in the mother liquor to ferrous iron. At the same time, this preheating process does not waste heat, because when the mother liquor is circulated and used in the reaction system, it generally needs to be heated, and this preheating heat can be used in the reaction process of the reaction system.
[0011] In the above device, preferably, the fixed bed of iron chips is disposed above and to the side of the mother liquor tank, and a drain port is provided at the bottom of the fixed bed of iron chips, which is connected to the second connecting pipe via a third connecting pipe. The drain port serves two purposes: on the one hand, it facilitates the discharge of unwanted waste liquid; on the other hand, it allows the mother liquor remaining in the fixed bed of iron chips to be discharged into the mother liquor tank. The third connecting pipe may have two branches, one for connecting to the second connecting pipe and disposed at the front end of the filtration device, and the other for draining the waste liquid.
[0012] In the above device, preferably, the mother liquor tank further comprises a tank body and a stirring system vertically arranged on the tank body. The stirring system is used to fully mix the mother liquor in the mother liquor tank.
[0013] In the above device, preferably, the stirring system includes a drive motor, a reducer, a stirring rod, and a paddle, wherein the drive motor is connected to the reducer, which is connected to the stirring rod, and the paddle is provided on the stirring rod. The drive motor is provided to drive the entire stirring system, and the reducer is provided to reduce the high-speed rotation of the motor to a low-speed rotation suitable for stirring. Finally, the stirring rod drives the paddle to rotate to achieve stirring.
[0014] In the above device, preferably, the first connecting pipes at both ends of the mother liquid circulation pump are equipped with control ball valves. This facilitates maintenance and control of the mother liquid flow rate. A check valve is also provided at one end of the mother liquid circulation pump connected to the iron filings fixed bed via the first connecting pipe to prevent backflow of the mother liquid during operation, thereby ensuring stable operation of the device.
[0015] In the above device, preferably, the mother liquid circulation pump is a centrifugal pump.
[0016] Compared with the prior art, the advantages of the present invention are:
[0017] By setting up a fixed bed of iron chips and using a circulation process, the trivalent iron in the mother liquor can be timely and fully reduced to divalent iron, ensuring that the trivalent iron in the mother liquor does not exceed the standard and will not be brought into the product. At the same time, no new impurities are introduced. The device is simple to operate and easy to control. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 This is a schematic structural diagram of the device for reducing ferric iron in amino acid iron according to Example 1;
[0020] Figure 2 This is a schematic structural diagram of the device for reducing the trivalent iron in amino acid iron in Example 2.
[0021] Legend
[0022] 1. Iron chip fixed bed; 2. Mother liquor circulation pump; 3. Mother liquor tank; 4. First connecting pipe; 5. Second connecting pipe; 6. Filter device; 7. Insulation device; 11. Cylinder; 12. Upper and lower sieve plates; 13. Iron chips; 14. Inspection port; 15. Drain port; 16. Third connecting pipe; 31. Tank; 32. Agitation system; 33. Inspection hole; 34. Output port. DETAILED DESCRIPTION
[0023] In order to facilitate the understanding of the present invention, the present invention will be described in more comprehensive and detailed manner below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.
[0024] It should be noted that when an element is described as being "fixed, fixed, connected or communicated with" another element, it can be directly fixed, fixed, connected or communicated with the other element, or it can be indirectly fixed, fixed, connected or communicated with the other element through other intermediate connectors.
[0025] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.
[0026] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.
[0027] Example 1:
[0028] like Figure 1 As shown, the device for reducing trivalent iron in amino acid iron of this embodiment includes an iron filings fixed bed 1 and a mother liquor tank 3 for storing mother liquor after amino acid iron crystallization centrifugation. The lower outlet of the mother liquor tank 3 is connected to the inlet of the iron filings fixed bed 1 through a first connecting pipe 4, and the outlet of the iron filings fixed bed 1 is connected to the upper inlet of the mother liquor tank 3 through a second connecting pipe 5. The first connecting pipe 4 is provided with a mother liquor circulation pump 2 for pumping the mother liquor in the mother liquor tank 3 into the iron filings fixed bed 1.
[0029] In this embodiment, the iron chip fixed bed 1 comprises a cylinder 11, upper and lower sieve plates 12, and iron chips 13. Iron chips 13 are disposed in a barrier formed by the upper and lower sieve plates 12. The bed also includes an access port 14 located on one side of the upper portion of the cylinder 11 and a drain port 15 located at the bottom of the cylinder 11. Iron chips 13 are machined planing and milling chips that have been subjected to alkaline washing to remove oil and then deionized water to remove alkali. In other embodiments, iron chips 13 may be iron rods, iron blocks, or iron powder.
[0030] In this embodiment, the mother liquor tank 3 further includes a tank body 31 and a stirring system 32 vertically arranged on the tank body 31. It also includes an inspection hole 33 arranged at the top of the tank body 31 and an output port 34 arranged below the tank body 31 for outputting the qualified mother liquor.
[0031] In this embodiment, the stirring system 32 includes a driving motor, a speed reducer, a stirring rod and blades. The driving motor is connected to the speed reducer, the speed reducer is connected to the stirring rod, and the blades are arranged on the stirring rod.
[0032] In this embodiment, the first connecting pipes 4 at both ends of the mother liquid circulation pump 2 are provided with control ball valves.
[0033] In this embodiment, the mother liquid circulation pump 2 is a centrifugal pump.
[0034] The specific operation process of the device for reducing ferric iron in amino acid iron of this embodiment is as follows:
[0035] 1. The mother liquor generated after the amino acid iron is synthesized, crystallized and centrifuged flows into the mother liquor tank 3, where the mother liquor is stirred and mixed uniformly by the stirring system 32;
[0036] 2. The evenly mixed mother liquor is pumped from the lower outlet through the first connecting pipe 4 and the mother liquor circulation pump 2 into the lower inlet of the iron filings fixed bed 1. The mother liquor flows from bottom to top, and the trivalent iron in it fully contacts the iron filings 13 and is reduced to divalent iron by the elemental iron in the iron filings 13.
[0037] 3. The reduced mother liquor flows back into the mother liquor tank 3 through the second connecting pipe 5;
[0038] 4. Repeat steps 2 and 3 above until the ferric iron content in the mother liquor reaches the required level.
[0039] The above operation is simple. When the trivalent iron is high, the corresponding effect can be achieved by cycling several times. The consumed iron filings 13 can be replenished as needed. The unreacted iron filings 13 remain in the iron filing fixed bed 1, and the reacted iron filings 13 become divalent iron, without introducing new impurities.
[0040] Example 2:
[0041] like Figure 2 As shown, the device for reducing ferric iron in amino acid iron of this embodiment is a further improvement of Example 1, except that:
[0042] In this embodiment, a filtering device 6 is further provided on the second connecting pipe 5 for further filtering the reducing liquid discharged from the iron chip fixed bed 1 to remove the iron element.
[0043] In this embodiment, the outer wall of the mother liquid tank 3 is provided with a heat preservation device 7 for increasing the temperature of the mother liquid.
[0044] In this embodiment, the iron chip fixed bed 1 is arranged on the upper side of the mother liquid tank 3, and the drain outlet 15 is connected to the second connecting pipe 5 through the third connecting pipe 16. The third connecting pipe 16 is provided with two branches, one for connecting to the second connecting pipe 5 and is arranged at the front end of the filter device 6 (it can also flow directly into the mother liquid tank 3 without passing through the filter device 6. If it passes through the filter device 6, a pumping device can be optionally provided on the third connecting pipe 16), and the other branch is used to empty the waste liquid.
[0045] In this embodiment, the insulation device 7 preheats the mother liquor in the mother liquor tank 3, and the mother liquor flows into the iron chip fixed bed 1, which can more quickly reduce the trivalent iron in the mother liquor to divalent iron. The iron element is carried out of the iron chip fixed bed 1 by the reducing liquid, and the iron element is further filtered out through the filtering device 6. Finally, when the mother liquor reaches the standard, the final reducing liquid flows into the filtering device 6 through the drain port 15, flows into the mother liquor tank 3 after filtration, and is discharged through the output port 34.
[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A device for reducing ferric iron in amino acid iron, characterized in that: The invention comprises an iron chip fixed bed (1) and a mother liquor tank (3) for storing mother liquor after centrifugation of amino acid iron crystals, wherein the lower outlet of the mother liquor tank (3) is connected to the lower inlet of the iron chip fixed bed (1) via a first connecting pipe (4), and the upper outlet of the iron chip fixed bed (1) is connected to the upper inlet of the mother liquor tank (3) via a second connecting pipe (5), and the first connecting pipe (4) is provided with a mother liquor circulation pump (2) for pumping the mother liquor in the mother liquor tank (3) into the iron chip fixed bed (1).
2. The device for reducing ferric iron in amino acid iron according to claim 1, wherein The iron chip fixed bed (1) comprises a cylinder (11), upper and lower sieve plates (12), and iron chips (13), wherein the iron chips (13) are arranged in a partition formed by the upper and lower sieve plates (12).
3. The device for reducing ferric iron in amino acid iron according to claim 1, wherein The second connecting pipe (5) is also provided with a filtering device (6) for further filtering the reducing liquid discharged from the iron chip fixed bed (1) to remove the iron element.
4. The device for reducing ferric iron in amino acid iron according to claim 1, wherein The outer wall of the mother liquid tank (3) is provided with a heat preservation device (7) for increasing the temperature of the mother liquid.
5. The device for reducing ferric iron in amino acid iron according to claim 1, characterized in that The iron chip fixed bed (1) is arranged above the side of the mother liquid tank (3), and a drain port (15) is provided at the bottom of the iron chip fixed bed (1). The drain port (15) is connected to the second connecting pipe (5) via a third connecting pipe (16).
6. The device for reducing ferric iron in amino acid iron according to claim 1, characterized in that The mother liquid tank (3) comprises a tank body (31) and a stirring system (32) vertically arranged on the tank body (31).
7. The device for reducing ferric iron in amino acid iron according to claim 6, characterized in that The stirring system (32) comprises a driving motor, a speed reducer, a stirring rod and a paddle, wherein the driving motor is connected to the speed reducer, the speed reducer is connected to the stirring rod, and the paddle is arranged on the stirring rod.
8. The device for reducing ferric iron in amino acid iron according to claim 1, characterized in that Control ball valves are provided on both ends of the mother liquid circulation pump (2) on the first connecting pipe (4).
9. The device for reducing ferric iron in amino acid iron according to any one of claims 1 to 8, characterized in that: The mother liquid circulation pump (2) is a centrifugal pump.