Glycine and ammonium chloride separation device and separation process

Abstract

The invention relates to the technical field of separation devices, and provides a glycine and ammonium chloride separation device and a separation technology.The device comprises a shell, a center rotating shaft is rotationally connected to the interior of the shell, a heating structure is arranged in the shell, and a reinforcing structure is connected to the outer surface of the center rotating shaft; a heating cavity is formed in the shell, an annular sliding rail is fixedly connected to the surface of the inner wall, corresponding to the heating cavity, of the shell, a plurality of sliding plates are rotationally connected to the outer surface of the annular sliding rail, a connecting plate is fixedly connected between every two adjacent sliding plates, heating pipes are connected to the outer surfaces of the sliding plates, and a rotating ring is rotationally connected to the inner wall of the shell. A protruding plate is fixedly connected to the inner side of the rotating ring in a penetrating mode, and an adjusting assembly is connected to the outer surface of the center rotating shaft and used for driving the protruding plate to rotate when the center rotating shaft rotates to a certain rotating speed. By means of the technical scheme, the problems that when an existing separation device is used for heating the interior, heating is prone to being uneven, the stirring time can be prolonged, and the heating effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of separation devices, and in particular to a glycine and ammonium chloride separation device and a separation process. Background Art

[0002] Glycine is an amino acid with the simplest structure in the amino acid series. It is a non-essential amino acid for the human body. It has both acidic and basic functional groups in the molecule. It can be ionized in water and has strong hydrophilicity, but it is a non-polar amino acid. Ammonium chloride is a colorless crystal or a white crystalline powder. It is odorless, salty and cool in taste. It is hygroscopic. In production, there will be mixed coarse crystals of glycine and ammonium chloride. At this time, the two products need to be separated. Glycine and ammonium chloride usually require the linkage of multiple equipment, including reactors, filtration and distillation equipment. The improvement in the present invention is mainly based on reactors. After searching, the authorization announcement number CN110885295B is a method for separating mixed crystals of glycine and ammonium chloride using a high boiling point polar solvent. The separation method provided by the invention can effectively reduce the complexity of separation using a traditional low boiling point solvent, and has a good separation effect. The recovery rate of glycine and ammonium chloride can reach more than 95%, and the purity can reach more than 99%. At the same time, it can reduce the equipment investment in the mixed crystal separation section in the glycine production process, reduce energy consumption, reduce the amount of solvent used, and reduce harm to the environment; However, the existing separation device mentioned above is prone to uneven heating when heating the interior, which will prolong the stirring time and lead to poor heating effect. For this reason, we propose a glycine and ammonium chloride separation device and separation process. Summary of the invention

[0003] The present invention provides a glycine and ammonium chloride separation device and separation process, which solves the problem that the existing separation device mentioned in the background technology is prone to uneven heating when the interior is heated, which prolongs the stirring time and has a poor heating effect.

[0004] The technical solution of the present invention is as follows: A glycine and ammonium chloride separation device comprises a shell, wherein a central shaft is rotatably connected inside the shell, a heating structure is arranged inside the shell, and a reinforcement structure is connected to the outer surface of the central shaft; A heating chamber is provided inside the shell, and an annular slide rail is fixedly connected to the inner wall surface of the shell corresponding to the heating chamber, and a plurality of groups of slide plates are rotatably connected to the outer surface of the annular slide rail, and a connecting plate is fixedly connected between two adjacent groups of slide plates, and a heating tube is connected to the outer surface of the slide plate, and a rotating ring is rotatably connected to the inner wall of the shell, and a protruding plate is fixedly connected to the inner side of the rotating ring, and an adjusting component is connected to the outer surface of the central rotating shaft, and the adjusting component is used to drive the protruding plate to rotate when the central rotating shaft rotates to a certain speed.

[0005] As a further technical solution of the present invention, a stirring blade is fixedly connected to the lower end of the central rotating shaft, and a stirring motor is fixedly connected to the upper end of the shell corresponding to the upper end of the central rotating shaft. The stirring motor is used to increase the rotational power of the central rotating shaft. Several groups of feed pipes are provided on the outer surface of the shell, and a discharge pipe is fixedly connected to the lower end of the shell.

[0006] As a further technical solution of the present invention, the adjustment component includes a fixed column fixedly connected to the outer surface of the central rotating shaft, the outer surface of the fixed column is movably sleeved with a movable kit, the outer surface of the movable kit is fixedly connected to a No. 1 fixed frame, the inner side of the No. 1 fixed frame is rotatably connected to a No. 1 roller, and a pulling spring is arranged inside the movable kit.

[0007] As a further technical solution of the present invention, the reinforcement structure includes a fixed blade fixedly connected to the outer surface of the central rotating shaft, the outer surface of the fixed blade is fixedly connected to a protruding blade, a slide groove is provided inside the fixed blade, a sliding blade is slidably connected to the inner side of one end of the fixed blade, an arc spring is arranged inside the slide groove, one end of the sliding blade is fixedly connected to a No. 2 fixing frame, and a No. 2 roller is rotatably connected to the inner side of the No. 2 fixing frame.

[0008] As a further technical solution of the present invention, the annular slide rail is a circular ring structure, and there are two groups of them that are symmetrically distributed, the positions of the slides on the two groups of annular slide rails correspond one to one, and there are several groups of heating tubes that are distributed in an annular array.

[0009] As a further technical solution of the present invention, a group of the heating tubes respectively corresponds to slides at the same position on two groups of annular slide rails, the slides together with the connecting plates slide along the length direction of the annular slide rails, the rotating ring rotates along the axis of the shell, and the protruding plate is fixedly connected to a group of slides.

[0010] As a further technical solution of the present invention, the position of the fixed column corresponds to the position of the rotating ring, the movable kit slides back and forth along the length of the fixed column, the elastic ends of the pull spring are respectively fixedly connected to the end of the fixed column and the inner wall of one end of the movable kit, and the No. 1 roller and the rotating ring are in rolling connection.

[0011] As a further technical solution of the present invention, the number of the fixed blades is several groups and distributed in a ring array, the protruding blades are arranged on the upper and lower surfaces of the fixed blades, the sliding blades slide along the length direction of the protruding blades, the fixed blades are arc-shaped structures, and the arc springs are arc-shaped structures that match the slide grooves.

[0012] As a further technical solution of the present invention, the elastic ends of the arc spring are fixedly connected to the inner walls of one end of the sliding blade and one end of the fixed blade respectively, and the second roller is rollingly connected to the inner wall of the shell. The centrifugal force when the fixed blade rotates driven by the central shaft adjusts the position of the sliding blade relative to the fixed blade.

[0013] A process for separating glycine and ammonium chloride, wherein the separation process is as follows: dissolving a mixed coarse crystal of glycine and ammonium chloride in water and heating the mixed coarse crystal to 50-60° C., wherein the heating and dissolving device is a reactor; Then, aP solvent was added dropwise and filtered directly after the addition to obtain glycine with a purity of 95% and a yield of 71%. After the mother liquor was evaporated to remove ammonium chloride, it was used again to obtain glycine with a purity of 98% and a yield of 87%. Methanol was added dropwise, and then aP was added dropwise after the addition of methanol was completed. After the addition was completed, glycine was filtered to obtain a purity of 97% and a yield of 82%. After the mother liquor was evaporated to remove ammonium chloride, it was applied again to obtain glycine with a purity of 99% and a yield of 92%; After the aP solvent is used 7-10 times, the aP solvent is distilled out at a high temperature above 200° C. The recovered aP solvent is ring-opened under the action of a solid base catalyst to generate gamma-aminobutyric acid.

[0014] The working principle and beneficial effects of the present invention are: Through the action of the heating structure in the present invention, after the device is in operation, the heating component of the device can be continuously rotated inside the heating chamber, so that the heat can be more evenly transferred to the internal stirring cavity of the shell, and with the cooperation of the stirring component, the heating inside the device can be made uniform in a rapid area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 It is a schematic diagram of the structure of the device of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the cutaway local structure; Figure 3 For the present invention Figure 2 A schematic diagram of a local structure cut away from another perspective; Figure 4 For the present invention Figure 2 Schematic diagram of the local structure from another perspective; Figure 5 For the present invention Figure 4 Schematic diagram of the local structure; Figure 6 For the present invention Figure 5 Schematic diagram of the cutaway local structure; Figure 7 It is a schematic diagram of the local structure of the reinforcement structure of the present invention; Figure 8 It is a schematic diagram of the partial structure of the fixed blade of the present invention.

[0017] In the figure: 1. Shell; 2. Central rotating shaft; 3. Heating structure; 31. Heating chamber; 32. Annular slide rail; 33. Slide plate; 34. Connecting plate; 35. Heating tube; 36. Rotating ring; 37. Protruding plate; 38. Fixed column; 39. Movable kit; 310. Fixed frame No. 1; 311. Roller No. 1; 312. Pull spring; 4. Reinforcement structure; 41. Fixed blade; 42. Protruding blade; 43. Slide groove; 44. Sliding blade; 45. Arc spring; 46. Fixed frame No. 2; 47. Roller No. 2; 5. Stirring blade; 6. Stirring motor; 7. Feed pipe; 8. Discharge pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] like Figure 1 to Figure 6 As shown, this embodiment provides a device for separating glycine and ammonium chloride, comprising a housing 1, a central shaft 2 is rotatably connected inside the housing 1, a heating structure 3 is arranged inside the housing 1, and a reinforcing structure 4 is connected to the outer surface of the central shaft 2; A heating chamber 31 is provided inside the shell 1, and an annular slide rail 32 is fixedly connected to the inner wall surface of the shell 1 corresponding to the heating chamber 31, and a plurality of groups of slide plates 33 are rotatably connected to the outer surface of the annular slide rail 32, and a connecting plate 34 is fixedly connected between two adjacent groups of slide plates 33. A heating tube 35 is connected to the outer surface of the slide plate 33, and a rotating ring 36 is rotatably connected to the inner wall of the shell 1, and a protruding plate 37 is fixedly connected to the inner side of the rotating ring 36, and an adjusting component is connected to the outer surface of the central rotating shaft 2, and the adjusting component is used to drive the protruding plate 37 to rotate when the central rotating shaft 2 rotates to a certain speed.

[0020] The lower end of the central rotating shaft 2 is fixedly connected with a stirring blade 5, and the upper end of the shell 1 is fixedly connected with a stirring motor 6 corresponding to the upper end of the central rotating shaft 2. The stirring motor 6 is used to increase the rotational power of the central rotating shaft 2. The outer surface of the shell 1 is provided with several groups of feed pipes 7, and the lower end of the shell 1 is fixedly connected with a discharge pipe 8.

[0021] The adjustment component includes a fixed column 38 fixedly connected to the outer surface of the central shaft 2, the outer surface of the fixed column 38 is movably sleeved with a movable kit 39, the outer surface of the movable kit 39 is fixedly connected to a No. 1 fixed frame 310, the inner side of the No. 1 fixed frame 310 is rotatably connected to a No. 1 roller 311, and a pull spring 312 is arranged inside the movable kit 39.

[0022] The annular slide rail 32 is a circular ring structure, and there are two groups of them and they are symmetrically distributed. The positions of the slide plates 33 on the two groups of annular slide rails 32 correspond one to one, and the number of heating tubes 35 is several groups and they are distributed in an annular array; one group of heating tubes 35 corresponds to the slide plates 33 at the same position on the two groups of annular slide rails 32, and the slide plates 33 together with the connecting plates 34 slide along the length direction of the annular slide rail 32, and the rotating ring 36 rotates along the axis of the shell 1, and the protruding plate 37 is fixedly connected to a group of slide plates 33; the position of the fixed column 38 corresponds to the position of the rotating ring 36, and the movable kit 39 slides back and forth along the length of the fixed column 38, and the elastic ends of the pull spring 312 are fixedly connected to the ends of the fixed column 38 and the inner wall of one end of the movable kit 39, and the No. 1 roller 311 and the rotating ring 36 are in a rolling connection.

[0023] In this embodiment, after the device is running, the heating component of the device can be continuously rotated inside the heating chamber 31, so that the heat can be more evenly transferred to the internal stirring cavity of the shell 1, and with the cooperation of the stirring component, the heating area inside the device can be uniform. Example

[0024] like Figure 7~Figure 8 As shown, on the basis of Example 1, it is further proposed that the reinforcement structure 4 includes a fixed blade 41 fixedly connected to the outer surface of the central rotating shaft 2, the outer surface of the fixed blade 41 is fixedly connected with a protruding blade 42, a slide groove 43 is provided inside the fixed blade 41, a sliding blade 44 is slidably connected to the inner side of one end of the fixed blade 41, an arc spring 45 is arranged inside the slide groove 43, one end of the sliding blade 44 is fixedly connected to a No. 2 fixing frame 46, and the inner side of the No. 2 fixing frame 46 is rotatably connected to a No. 2 roller 47.

[0025] The number of fixed blades 41 is several groups and they are distributed in a ring array. The protruding blades 42 are arranged on the upper and lower surfaces of the fixed blades 41. The sliding blades 44 slide along the length direction of the protruding blades 42. The fixed blades 41 are arc-shaped structures, and the arc springs 45 are arc-shaped structures matching the slide grooves 43.

[0026] The elastic ends of the arc spring 45 are fixedly connected to the inner walls of one end of the sliding blade 44 and one end of the fixed blade 41 respectively. The second roller 47 is rollingly connected to the inner wall of the shell 1. The centrifugal force when the fixed blade 41 rotates is driven by the central shaft 2 to adjust the position of the sliding blade 44 relative to the fixed blade 41.

[0027] In this embodiment, during use, the size of the blades for stirring the internal raw materials can be automatically adjusted according to the needs of the user, thereby achieving a better stirring effect, promoting the mixing of the raw materials, allowing the various components to be fully mixed, and achieving a better stirring effect.

[0028] A process for separating glycine and ammonium chloride, wherein the separation process is as follows: dissolving a mixed coarse crystal of glycine and ammonium chloride in water and heating the mixed coarse crystal to 50-60° C., wherein the heating and dissolving device is a reactor; Then, aP solvent was added dropwise and filtered directly after the addition to obtain glycine with a purity of 95% and a yield of 71%. After the mother liquor was evaporated to remove ammonium chloride, it was used again to obtain glycine with a purity of 98% and a yield of 87%. Methanol was added dropwise, and then aP was added dropwise after the addition of methanol was completed. After the addition was completed, glycine was filtered to obtain a purity of 97% and a yield of 82%. After the mother liquor was evaporated to remove ammonium chloride, it was applied again to obtain glycine with a purity of 99% and a yield of 92%; After the aP solvent is used 7-10 times, the aP solvent is distilled out at a high temperature above 200° C. The recovered aP solvent is ring-opened under the action of a solid base catalyst to generate gamma-aminobutyric acid.

[0029] In summary, the working principle of the present invention is as follows: When in use, the user can put the mixed coarse crystals of glycine and ammonium chloride into the interior of the housing 1 through the feed pipe 7, then start the device and add water until the mixed coarse crystals are completely dissolved. During the dissolution process, the central rotating shaft 2 is driven by the stirring motor 6 to drive the reinforcing structure 4 to rotate, thereby promoting the dissolution process; Then, aP solvent was added dropwise and filtered directly after the addition to obtain glycine with a purity of 95% and a yield of 71%. After the mother liquor was evaporated to remove ammonium chloride, it was used again to obtain glycine with a purity of 98% and a yield of 87%. Methanol was added dropwise, and then aP was added dropwise after the addition of methanol was completed. After the addition was completed, glycine was filtered to obtain a purity of 97% and a yield of 82%. After the mother liquor was evaporated to remove ammonium chloride, it was applied again to obtain glycine with a purity of 99% and a yield of 92%; After the aP solvent is used 7-10 times, the aP solvent is distilled out at a high temperature above 200° C. The recovered aP solvent is ring-opened under the action of a solid base catalyst to generate gamma-aminobutyric acid.

[0030] During the above-mentioned use, the rotation of the central shaft 2 can drive the fixed column 38 to rotate synchronously, and the movable kit 39 is swung outward by the fixed column 38, and the movable kit 39 drives the No. 1 fixed frame 310 and the No. 1 roller 311 to rotate synchronously, and is swung outside the No. 1 roller 311 until the No. 1 roller 311 rolls on the inner side of the rotating ring 36, and then the No. 1 roller 311 will push the protruding plate 37, and drive the protruding plate 37 and the rotating ring 36 to rotate with itself. When the protruding plate 37 rotates with it, it will drive the slide plate 33 and the connecting plate 34 to rotate with it, and the annular slide rail 32 provides conditions for the sliding of the slide plate 33, so that the heating tube 35 that generates heat can rotate with it inside the heating chamber 31, so that the heat emitted by the heating tube 35 is evenly dissipated to the inside of the shell 1, so that the temperature reaches the required temperature faster; During the dissolution process, the rotation of the central shaft 2 can drive the fixed blades 41 to rotate along with it. The fixed blades 41 together with the protruding blades 42 will mix and stir the interior of the shell 1. According to the rotation force of the central shaft 2, the fixed blades 41 will swing the sliding blades 44 with different forces, so that the sliding blades 44 can be swung outward. At this time, the arc springs 45 will be stretched and expanded, thereby increasing the stirring range of the entire "blade" and achieving better stirring and mixing effects. As the rotation speed changes, the raw materials can be better dissolved and mixed.

[0031] It should be noted that this process operation realizes the recycling of materials in the whole process.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for separating glycine and ammonium chloride, comprising a housing (1), characterized in that: The shell (1) is rotatably connected to a central rotating shaft (2), a heating structure (3) is provided inside the shell (1), and a reinforcement structure (4) is connected to the outer surface of the central rotating shaft (2); A heating chamber (31) is provided inside the shell (1); an annular slide rail (32) is fixedly connected to the inner wall surface of the shell (1) corresponding to the heating chamber (31); a plurality of groups of slide plates (33) are rotatably connected to the outer surface of the annular slide rail (32); a connecting plate (34) is fixedly connected between two adjacent groups of slide plates (33); a heating tube (35) is connected to the outer surface of the slide plate (33); a rotating ring (36) is rotatably connected to the inner wall of the shell (1); a protruding plate (37) is fixedly connected to the inner side of the rotating ring (36); an adjusting component is connected to the outer surface of the central rotating shaft (2); the adjusting component is used to drive the protruding plate (37) to rotate when the central rotating shaft (2) rotates to a certain rotation speed.

2. The glycine and ammonium chloride separation device according to claim 1, characterized in that: The lower end of the central rotating shaft (2) is fixedly connected to a stirring blade (5); the upper end of the shell (1) is fixedly connected to a stirring motor (6) corresponding to the upper end of the central rotating shaft (2); the stirring motor (6) is used to increase the rotational power of the central rotating shaft (2); the outer surface of the shell (1) is provided with a plurality of groups of feed pipes (7); and the lower end of the shell (1) is fixedly connected to a discharge pipe (8).

3. The glycine and ammonium chloride separation device according to claim 1, characterized in that: The adjustment assembly comprises a fixed column (38) fixedly connected to the outer surface of the central rotating shaft (2); the outer surface of the fixed column (38) is movably sleeved with a movable set (39); the outer surface of the movable set (39) is fixedly connected to a first fixing frame (310); the inner side of the first fixing frame (310) is rotatably connected to a first roller (311); and a pulling spring (312) is provided inside the movable set (39).

4. The glycine and ammonium chloride separation device according to claim 1, characterized in that: The reinforcing structure (4) comprises a fixed blade (41) fixedly connected to the outer surface of the central rotating shaft (2); a protruding blade (42) is fixedly connected to the outer surface of the fixed blade (41); a sliding groove (43) is provided inside the fixed blade (41); a sliding blade (44) is slidably connected to the inner side of one end of the fixed blade (41); an arc spring (45) is provided inside the sliding groove (43); one end of the sliding blade (44) is fixedly connected to a second fixing frame (46); and a second roller (47) is rotatably connected to the inner side of the second fixing frame (46).

5. The glycine and ammonium chloride separation device according to claim 1, characterized in that: The annular slide rails (32) are of annular structure and are provided in two groups and are symmetrically distributed. The positions of the slide plates (33) on the two groups of annular slide rails (32) correspond one to one. The heating tubes (35) are provided in several groups and are distributed in an annular array.

6. The device for separating glycine and ammonium chloride according to claim 5, characterized in that: A group of the heating tubes (35) respectively corresponds to the slide plates (33) at the same position on the two groups of annular slide rails (32); the slide plates (33) together with the connecting plates (34) slide along the length direction of the annular slide rails (32); the rotating ring (36) rotates along the axis of the shell (1); and the protruding plate (37) is fixedly connected to a group of slide plates (33).

7. The device for separating glycine and ammonium chloride according to claim 3, characterized in that: The position of the fixed column (38) corresponds to the position of the rotating ring (36), the movable set (39) slides back and forth along the length of the fixed column (38), the elastic ends of the pull spring (312) are respectively fixedly connected to the end of the fixed column (38) and the inner wall of one end of the movable set (39), and the first roller (311) and the rotating ring (36) are in rolling connection.

8. The device for separating glycine and ammonium chloride according to claim 4, characterized in that: The fixed blades (41) are arranged in a plurality of groups and are distributed in a ring array. The protruding blades (42) are arranged on the upper and lower surfaces of the fixed blades (41). The sliding blades (44) slide along the length direction of the protruding blades (42). The fixed blades (41) are of an arc-shaped structure. The arc-shaped springs (45) are of an arc-shaped structure that matches the slide grooves (43).

9. The device for separating glycine and ammonium chloride according to claim 8, characterized in that: The elastic ends of the arc spring (45) are respectively fixedly connected to the inner wall of one end of the sliding blade (44) and one end of the fixed blade (41); the second roller (47) is in rolling connection with the inner wall of the housing (1); the centrifugal force when the fixed blade (41) is driven to rotate by the central shaft (2) is used to adjust the position of the sliding blade (44) relative to the fixed blade (41).

10. A process for separating glycine from ammonium chloride, using the separation device according to any one of claims 1 to 9 as one of the separation equipment, characterized in that: The separation process is as follows: dissolving the mixed coarse crystals of glycine and ammonium chloride in water and heating the mixed coarse crystals to 50-60° C. The equipment for heating and dissolving the mixed coarse crystals is a reactor; Then, aP solvent was added dropwise and filtered directly after the addition to obtain glycine with a purity of 95% and a yield of 71%. After the mother liquor was evaporated to remove ammonium chloride, it was used again to obtain glycine with a purity of 98% and a yield of 87%. Methanol was added dropwise, and then aP was added dropwise after the addition of methanol was completed. After the addition was completed, glycine was filtered to obtain a purity of 97% and a yield of 82%. After the mother liquor was evaporated to remove ammonium chloride, it was applied again to obtain glycine with a purity of 99% and a yield of 92%; After the aP solvent is used 7-10 times, the aP solvent is distilled out at a high temperature above 200° C. The recovered aP solvent is ring-opened under the action of a solid base catalyst to generate gamma-aminobutyric acid.

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