Flushing and recycling device applied to glycine mother liquor
By combining centrifugation unit, separation and recovery unit and distillation purification unit, the problem of insufficient separation accuracy in glycine mother liquor recovery unit is solved, and precise partitioned recovery of glycine mother liquor and rinsing methanol is achieved, which improves recovery purity and efficiency and reduces production costs.
Patent Information
- Application Number
- CN202511884673.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-02-27
AI Technical Summary
Existing glycine mother liquor recovery devices suffer from insufficient separation precision, making it difficult to accurately separate and recover glycine mother liquor and rinsing methanol, resulting in purity contamination and poor synergy between filtration and subsequent recovery units.
The design employs a combination of centrifugation unit, separation and recovery unit, and distillation purification unit. The centrifugation components and filter cartridges work together to achieve initial solid-liquid separation. The mother liquor chamber and recovery chamber of the separation and recovery unit are designed with independent physical isolation for zoned recovery. Combined with the auxiliary extraction unit, the rinsing methanol is purified and regenerated to ensure the quality of glycine product and regenerated methanol.
This method enables efficient, separate recovery of glycine mother liquor and rinsing methanol, improving recovery purity, reducing production costs, minimizing additional separation energy consumption, enhancing recovery efficiency, and ensuring the processing quality of subsequent purification processes.
Smart Images
Figure CN121570867A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of chemical equipment, in particular to a glycine mother liquor flushing and separating recovery device. BACKGROUND
[0002] Glycine is a key raw material in the fields of medicine, food and feed, etc., and a large amount of mother liquor containing glycine, ammonium chloride, methanol and a small amount of solid impurities is generated in the industrial production process of glycine, and efficient recovery and treatment of the mother liquor is a core link for improving raw material utilization and reducing environmental protection pressure. In the mother liquor treatment process, effective separation of liquefied components and solidified components is the basis, and filtration is a key step for realizing preliminary separation of solid and liquid and removing large-particle impurities, and directly affects the efficiency of the subsequent purification process and product quality.
[0003] The existing glycine mother liquor flushing and separating recovery device is mainly composed of simple centrifugal separation and a conventional filter assembly, and after preliminary separation of solid and liquid is realized through centrifugal force, the mother liquor is directly delivered to a purification unit. However, such a device generally has the problem of insufficient separation precision, and mother liquor impurities are easily left on the surface of the solid product, and the synergy between filtration and the subsequent recovery unit is poor.
[0004] According to the related technology in the above, the inventors believe that there is a defect that the glycine mother liquor and flushing methanol are difficult to be accurately recovered in different zones. SUMMARY
[0005] In order to solve the above technical problems, the application provides a glycine mother liquor flushing and separating recovery device.
[0006] The glycine mother liquor flushing and separating recovery device provided by the application adopts the following technical scheme: A glycine mother liquor flushing and separating recovery device, comprising a centrifugal unit, a separating and recovering unit and a rectifying and purifying unit connected in sequence; the centrifugal unit comprises a centrifugal shell, a centrifugal assembly, a filter cartridge and a driving motor; the filter cartridge is arranged at the bottom of the centrifugal shell through the driving motor, and the driving motor is used to drive the filter cartridge to rotate; one end of the centrifugal assembly is rotatably arranged at the top of the centrifugal shell, and the other end of the centrifugal assembly is located in the filter cartridge; a feed inlet is arranged at the top of the centrifugal shell and communicates with the centrifugal assembly; a liquid outlet is arranged at the bottom of the centrifugal shell, and the separating and recovering unit is communicatively arranged on the liquid outlet; the separating and recovering unit comprises a separating shell, and the separating shell is divided into a mother liquor cavity and a recovery cavity; the rectifying and purifying unit communicates with the mother liquor cavity; and an auxiliary extraction unit is communicatively arranged on the recovery cavity.
[0007] By adopting the above technical solution, the separation and recovery unit achieves physical isolation and zoned recovery of glycine mother liquor and rinsing methanol through the independent design of the mother liquor chamber and the recovery chamber. This completely avoids purity contamination caused by the mixing of the two liquids, providing pure raw materials for subsequent distillation purification and auxiliary extraction, and ensuring that the quality of glycine products and regenerated methanol meets the standards. The centrifugation unit first removes solid impurities from the mixed system through the synergistic action of the filter cartridge and centrifuge components, and then directionally transports the liquid components to the separation and recovery unit through the liquid outlet, avoiding interference from solid impurities with the liquid separation effect and further improving the recovery purity of the two liquids. The distillation purification unit is precisely connected to the mother liquor chamber, which can efficiently recover effective components such as glycine and ammonium chloride from the mother liquor, realizing the regeneration and utilization of the main product. The auxiliary extraction unit is connected to the recovery chamber, which can purify and regenerate the rinsing methanol, making it recyclable for the production process, greatly reducing the consumption of fresh raw materials and solvents, reducing production costs, and reducing the processing load of subsequent purification processes. This avoids additional separation energy consumption caused by liquid mixing, while the targeted treatment of the two liquids improves the recovery efficiency.
[0008] Preferably, the centrifuge assembly includes a rotating shaft, a rotating drum, and a first motor; the top of the rotating drum is provided with an opening, the feed inlet is connected to the inside of the rotating drum through the opening, and the rotating drum is provided with multiple sets of discharge holes in its circumference; the rotating shaft is rotatably disposed on the top of the centrifuge housing, and one end of the rotating shaft is fixedly connected to the inside of the rotating drum through the opening; the working end of the first motor is fixedly disposed on the other end of the rotating shaft, and the base of the first motor is disposed outside the top of the centrifuge housing.
[0009] By adopting the above technical solution, the multiple sets of ejector holes around the circumference of the rotating drum are the core separation structure. When the first motor drives the rotating shaft to rotate the rotating drum at high speed, the mother liquor can be quickly separated from solid impurities through the ejector holes under the action of centrifugal force. The multiple sets of ejector holes increase the liquid discharge area, avoid liquid discharge clogging caused by single holes or a small number of holes, and greatly improve the solid-liquid separation rate. The feed inlet is directly connected to the inside of the drum through the opening at the top of the rotating drum, and the material can directly enter the core area of centrifugal action, reducing the retention of material on the conveying path and reducing the loss in the separation process.
[0010] Preferably, a cleaning port is provided on one side of the top of the centrifuge shell, and a rinsing assembly is provided on the cleaning port. One end of the rinsing assembly is located inside the filter cartridge. The rinsing assembly includes a cleaning pipe, multiple sets of cleaning nozzles, and a water tank. The water tank is located on the top of the centrifuge shell. One end of the cleaning pipe is fixedly connected to the top of the centrifuge shell and communicates with the water tank. The other end of the cleaning pipe is located inside the filter cartridge. Multiple sets of cleaning nozzles are evenly arranged longitudinally on the cleaning pipe, and the cleaning nozzles communicate with the cleaning pipe.
[0011] By adopting the above technical solution, multiple sets of longitudinally evenly distributed cleaning nozzles, in conjunction with the rotation of the filter cartridge, can achieve all-round, dead-angle-free rinsing of the product inside the filter cartridge, thoroughly removing residual mother liquor and impurities adhering to the surface. The cleaning pipe directly penetrates into the interior of the filter cartridge, and the rinsing liquid reaches the core cleaning area directly from the nozzle, reducing waste in the transportation path and improving the utilization rate of the cleaning liquid. The multiple sets of nozzles arranged longitudinally operate simultaneously, covering a wide range, without the need for repeated position adjustments. The methanol after rinsing can be recovered through the recovery chamber of the separation and recovery unit, and then recycled after regeneration by the auxiliary extraction unit, reducing the consumption of fresh methanol and saving raw material costs.
[0012] Preferably, a scraper assembly is provided on the other side of the top of the centrifuge shell, and the scraper assembly is disposed inside the filter cartridge; the scraper assembly includes a scraper shaft, a drive shaft, a scraper, and a return spring; one end of the drive shaft is rotatably disposed on the top of the centrifuge shell, and a drive groove is provided on one end of the drive shaft, the two sides of the drive groove being inclined surfaces; one end of the scraper shaft is rotatably disposed on the other end of the drive shaft; top blocks are provided on both sides of the other end of the drive shaft, the top blocks being used to abut against the scraper shaft to drive the drive shaft to rotate; the scraper is disposed on the scraper shaft, one end of the return spring is rotatably disposed on the scraper, and the other end of the return spring is rotatably disposed on the top of the centrifuge shell; one side of the scraper abuts against the interior of the filter cartridge.
[0013] By adopting the above technical solution, when the filter cartridge rotates in the forward direction, the scraper is kept in contact with the inner wall of the filter cartridge by the return spring. The scraper only rotates synchronously with the filter cartridge, without interfering with the centrifugal separation process, ensuring that the mother liquor can continuously pass through the discharge hole to complete the accumulation and collection of solid materials. When the solid materials accumulate to a set thickness, the scraper rotates around the scraper shaft with the material thickness, triggering the scraper shaft to abut against a top block and causing the drive shaft to rotate. At this time, the filter cartridge can be controlled to rotate in the reverse direction by the drive motor. The return spring provides a continuous abutment force, and the scraper sticks to the inner wall of the filter cartridge to scrape off the solid materials. After the scraping is completed, the material thickness drops to a threshold, and the scraper shaft abuts against another set of top blocks to cause the drive shaft to rotate and reset. The scraping action is automatically triggered by the material thickness, which can accurately match the material accumulation rhythm, avoiding material loss caused by scraping too early and preventing material agglomeration and difficulty in cleaning caused by scraping too late, ensuring that the inner wall of the filter cartridge is clean after scraping and ensuring the purity of the subsequently separated products.
[0014] Preferably, a material inlet is provided on the side of the centrifuge shell; a material receiving structure is provided inside the centrifuge shell, the material receiving structure including a material receiving cavity, a sliding block, a sliding spring, and a sliding plate; the material receiving cavity is disposed inside the shell wall of the centrifuge shell; one end of the sliding plate is slidably disposed at one end of the material receiving cavity, and the other end of the sliding plate is slidably disposed at the liquid outlet; one end of the sliding block is slidably disposed inside the other end of the material receiving cavity, and the other end of the sliding block abuts against the side of the drive shaft; the sliding spring is sleeved on the sliding block, one end of the sliding spring is fixedly disposed inside the material receiving cavity, and the other end of the sliding spring is fixedly disposed on the sliding block.
[0015] By adopting the above technical solution, the scraper shaft abuts against the first set of top blocks, causing the drive shaft to rotate and triggering the sliding block to spring into the drive groove. This causes the sliding plate to automatically block the liquid outlet, completely preventing solid materials from falling into the separation and recovery unit during the scraping process. This prevents solid impurities from contaminating the subsequent mother liquor and methanol, ensuring the purity of the recovered materials. As the solid material becomes thinner, the scraper shaft rotates in the opposite direction, abutting against another set of top blocks, causing the sliding block to disengage from the drive groove. The sliding plate automatically opens the liquid outlet, ensuring that the mother liquor flows smoothly into the separation and recovery unit. This achieves precise linkage between liquid discharge during separation and material interception during scraping, completing solid-liquid separation without manual intervention and significantly improving production continuity.
[0016] Preferably, the separation housing is provided with a swing flap assembly including a first baffle, a second baffle, a first spring, and a second spring; one end of the first baffle is rotatably disposed on one side of the mother liquor cavity; one end of the second baffle is rotatably disposed on one side of the recovery cavity; one end of the first spring is rotatably disposed on the first baffle, and the other end of the first spring is rotatably disposed on the inner wall of the mother liquor cavity; one end of the second spring is rotatably disposed on the second baffle, and the other end of the second spring is rotatably disposed on the inner wall of the recovery cavity.
[0017] By adopting the above technical solution, the first baffle and the second baffle are independently set for the mother liquor chamber and the recovery chamber, respectively. Through the elastic force of the first spring and the second spring, the baffle is always kept closed to the corresponding chamber, which structurally blocks the flow path of the mother liquor and the rinsing methanol, and completely avoids the turbulence and mixing of the two liquids in the separation shell. The continuous elastic resistance provided by the first spring and the second spring ensures the sealing effect. When the liquid impacts, the first baffle or the second baffle will open. When the liquid stops, the baffle will be reset by the force of the spring to maintain a stable seal, ensuring the accuracy of the zoned recovery.
[0018] Preferably, an activation structure is provided inside the side wall of the centrifuge shell. The activation structure includes an activation chamber, a drive block, a locking cylinder, a locking spring, and a locking block. One end of the activation chamber is connected to one end of the cleaning tube. One end of the drive block is slidably disposed within one end of the activation chamber, and the other end of the drive block is disposed within the cleaning tube. The locking spring is sleeved on the drive block, with one end of the locking spring fixedly disposed within the activation chamber and the other end of the locking spring fixedly disposed on the drive block. The locking cylinder is disposed within the recovery chamber, with the other end of the activation chamber connected to the locking cylinder, and one end of the locking block is slidably disposed within the locking cylinder.
[0019] By adopting the above technical solution, the starting structure, flushing assembly, and swing flap assembly are mechanically linked. Only when the flushing pipe is flushed with liquid, the liquid pressure overcomes the locking spring force to push the drive block. Through the connection between the starting chamber and the locking cylinder, the locking block is driven to retract, releasing the restriction on the second baffle and allowing the flushing methanol to smoothly push the second baffle into the recovery chamber. When there is no flushing liquid, the locking spring resets the drive block, and the locking block extends to block the second baffle, ensuring that the recovery chamber is closed. This achieves the unlocking of the second baffle when flushing starts and the locking of the second baffle when flushing stops, avoiding the second baffle from being accidentally opened when flushing methanol has not started, which could lead to the mixing of mother liquor, or the methanol flow being obstructed due to the lock not being released during flushing, thus ensuring the directionality and purity of methanol recovery.
[0020] Preferably, a floating plate is provided in the mother liquor cavity, and the floating plate has the freedom to slide longitudinally in the mother liquor cavity.
[0021] By adopting the above technical solution, the floating plate achieves longitudinal sliding based on the height of the mother liquor itself. When the mother liquor gradually accumulates in the cavity to the full state, the buoyancy of the liquid drives the floating plate to rise and press against the first baffle. At this time, even if subsequent liquid falls in, it cannot push the baffle to open. Combined with the previous swing flap assembly, the first baffle already serves to isolate the mother liquor cavity from the recovery cavity. When the floating plate is full, it presses against the first baffle, forming a double isolation and protection between the baffle and the floating plate.
[0022] Preferably, the distillation and purification unit includes a mother liquor tank, a distillation column, a first pipeline, and a second pipeline; the mother liquor tank is connected to the mother liquor cavity through the first pipeline, and a first switching valve is installed in the first pipeline; the distillation column is connected to the mother liquor tank through the second pipeline, and a first feed pump is installed in the second pipeline.
[0023] By adopting the above technical solution, the mother liquor tank serves as an intermediate buffer unit between the mother liquor chamber and the distillation column, receiving the glycine mother liquor discharged from the mother liquor chamber. This avoids material accumulation or feed interruption caused by the mismatch between the discharge rate of the mother liquor chamber and the feed rate of the distillation column, ensuring the continuity of the entire distillation and purification process. Through the cooperation of the first switch valve of the first pipeline and the first feed pump of the second pipeline, the flow rate and timing of the mother liquor entering the mother liquor tank or the distillation column can be flexibly controlled. The distillation column utilizes the boiling point differences of components such as glycine, ammonium chloride, and water to achieve efficient separation of glycine from impurities through distillation processes such as heating evaporation and vapor-phase condensation, obtaining high-purity glycine products that meet the quality requirements of industrial applications or subsequent processing.
[0024] Preferably, the auxiliary extraction unit includes a washing liquid tank, an extraction vessel, a third pipeline, and a fourth pipeline; the washing liquid tank is connected to the recovery chamber through the third pipeline, and a second switching valve is installed in the third pipeline; the extraction vessel is connected to the washing liquid tank through the fourth pipeline, and a second feed pump is installed in the fourth pipeline.
[0025] By adopting the above technical solution, the washing tank receives the rinsing methanol in the recovery chamber and serves as an intermediate buffer unit between methanol and the extraction vessel. This avoids a mismatch between the discharge rate of the recovered methanol and the feed rate of the extraction vessel, preventing material accumulation or feed interruption and ensuring the continuity of the extraction process. The flow rate and timing of methanol entering the washing tank or extraction vessel are flexibly controlled through the cooperation of the second switch valve in the third pipeline and the second feed pump in the fourth pipeline. The extraction vessel, as the core equipment for liquid-liquid mass transfer, utilizes the difference in the distribution coefficients of methanol and impurities in the extraction system to achieve efficient separation of methanol and impurities, purifying the recovered low-purity methanol into regenerated methanol that meets production standards.
[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The scraper shaft abuts against the first set of top blocks, causing the drive shaft to rotate and triggering the sliding block to spring into the drive groove. This causes the sliding plate to automatically block the liquid outlet, completely preventing solid materials from falling into the separation and recovery unit during the scraping process. This prevents solid impurities from contaminating the subsequent mother liquor and methanol, ensuring the purity of the recovered materials. As the solid material becomes thinner, the scraper shaft rotates in the opposite direction, abutting against another set of top blocks. This causes the sliding block to disengage from the drive groove, and the sliding plate automatically opens the liquid outlet, ensuring that the mother liquor flows smoothly into the separation and recovery unit. This achieves precise linkage between liquid discharge during separation and material interception during scraping, completing solid-liquid separation without manual intervention and significantly improving production continuity.
[0027] 2. The starting structure is mechanically linked with the flushing assembly and the swing flap assembly. Only when the flushing pipe is flushed with liquid, the liquid pressure overcomes the locking spring force to push the drive block. Through the connection between the starting chamber and the locking cylinder, the locking block is driven to retract, releasing the restriction on the second baffle and allowing the flushing methanol to smoothly push the second baffle into the recovery chamber. When there is no flushing liquid, the locking spring resets the drive block, and the locking block extends to block the second baffle, ensuring that the recovery chamber is closed. This achieves the goal of unlocking the second baffle when flushing starts and locking the second baffle when flushing stops, preventing the second baffle from accidentally opening when flushing methanol has not started, which could lead to the mixing of mother liquor, or preventing the methanol flow from being blocked if the lock is not released during flushing, thus ensuring the directionality and purity of methanol recovery. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure in the embodiment.
[0029] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the centrifuge shell and the separation shell in the embodiment.
[0030] Figure 3 yes Figure 2 A magnified view of part A in the middle.
[0031] Figure 4 yes Figure 2 A magnified view of part B in the middle.
[0032] Figure 5 yes Figure 2 A magnified view of part C in the middle.
[0033] Explanation of reference numerals in the attached drawings: 1. Centrifuge unit; 11. Centrifuge shell; 111. Feed inlet; 112. Liquid outlet; 113. Cleaning port; 114. Material collection port; 12. Centrifuge assembly; 121. Rotating shaft; 122. Rotating drum; 1221. Opening; 1222. Throwing hole; 123. First motor; 13. Filter cartridge; 14. Drive motor; 2. Flushing assembly; 21. Cleaning pipe; 22. Cleaning nozzle; 23. Water tank; 3. Scraper assembly; 31. Scraper shaft; 32. Drive shaft; 321. Drive groove; 322. Top block; 33. Scraper; 34. Return spring; 4. Swinging flap assembly; 41. First baffle; 42. Second baffle; 43. First spring; 44. Second spring; 5. Starting structure; 51. Starting chamber; 52. Drive block; 53. Locking cylinder; 54. Locking spring; 55. Locking block; 6. Separation and recovery unit; 61. Separation shell; 62. Mother liquor chamber; 621. Floating plate; 63. Recovery chamber; 7. Distillation and purification unit; 71. Mother liquor tank; 72. Distillation column; 73. First pipeline; 74. Second pipeline; 75. First switching valve; 76. First feed pump; 8. Auxiliary extraction unit; 81. Washing liquid tank; 82. Extraction vessel; 83. Third pipeline; 84. Fourth pipeline; 85. Second switching valve; 86. Second feed pump; 9. Material handling structure; 91. Material handling chamber; 92. Sliding block; 93. Sliding spring; 94. Sliding plate. Detailed Implementation
[0034] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0035] This application discloses an apparatus for flushing and recovering glycine mother liquor. (Refer to...) Figure 1 and Figure 2The system includes a centrifugal unit 1, a separation and recovery unit 6, and a distillation and purification unit 7 connected in sequence. The centrifugal unit 1 includes a centrifugal housing 11, a centrifugal assembly 12, a filter cartridge 13, and a drive motor 14. The filter cartridge 13 is located at the bottom of the centrifugal housing 11 via the drive motor 14, which drives the filter cartridge 13 to rotate. One end of the centrifugal assembly 12 is rotatably mounted on the top of the centrifugal housing 11, and the other end is located inside the filter cartridge 13. A feed inlet 111 is located at the top of the centrifugal housing 11, communicating with the centrifugal assembly 12. A liquid outlet 112 is located at the bottom of the centrifugal housing 11, and the separation and recovery unit 6 is connected to the liquid outlet 112. The separation and recovery unit 6 includes a separation housing 61, which is divided into a mother liquor chamber 62 and a recovery chamber 63. The centrifugal unit 1 separates the mother liquor into solid and liquid components, with the solid adsorbed onto the filter cartridge. On the 13th, liquid flows into the mother liquor chamber 62; the distillation and purification unit 7 is connected to the mother liquor chamber 62; the distillation and purification unit 7 includes a mother liquor tank 71, a distillation column 72, a first pipeline 73, and a second pipeline 74; the mother liquor tank 71 is connected to the mother liquor chamber 62 through the first pipeline 73, and a first switching valve 75 is installed in the first pipeline 73; the distillation column 72 is connected to the mother liquor tank 71 through the second pipeline 74, and a first feed pump 76 is installed in the second pipeline 74; the recovery chamber 63 is connected to an auxiliary extraction unit 8; the auxiliary extraction unit 8 includes a washing tank 81, an extraction vessel 82, a third pipeline 83, and a fourth pipeline 84; the washing tank 81 is connected to the recovery chamber 63 through the third pipeline 83, and a second switching valve 85 is installed in the third pipeline 83; the extraction vessel 82 is connected to the washing tank 81 through the fourth pipeline 84, and a second feed pump 86 is installed in the fourth pipeline 84.
[0036] Reference Figure 1 and Figure 2 The centrifuge assembly 12 includes a rotating shaft 121, a rotating drum 122, and a first motor 123. The rotating drum 122 has an opening 1221 at its top, through which a feed inlet 111 connects to the inside of the rotating drum 122. Multiple sets of ejection holes 1222 are arranged circumferentially around the rotating drum 122. The rotating shaft 121 is rotatably mounted on the top of the centrifuge housing 11, with one end of the shaft fixedly connected to the inside of the rotating drum 122 via the opening 1221. The working end of the first motor 123 is fixedly mounted on the other end of the rotating shaft 121, and the base of the first motor 123 is located outside the top of the centrifuge housing 11. The rotation of the first motor 123 drives the rotating drum 122 to rotate via the rotating shaft 121. The feed inlet 111 is located inside the rotating drum 122 via the opening 1221. The mother liquor enters the rotating drum 122 through the feed inlet 111, and solid-liquid separation is achieved through the multiple sets of ejection holes 1222 and the rotation of the filter cartridge 13.
[0037] Reference Figure 2 and Figure 5The separation housing 61 is equipped with a swing flap assembly 4, including a first baffle 41, a second baffle 42, a first spring 43, and a second spring 44. One end of the first baffle 41 is rotatably disposed on one side of the mother liquid chamber 62. One end of the second baffle 42 is rotatably disposed on one side of the recovery chamber 63. One end of the first spring 43 is rotatably disposed on the first baffle 41, and the other end of the first spring 43 is rotatably disposed on the inner wall of the mother liquid chamber 62. One end of the second spring 44 is rotatably disposed on the second baffle 42, and the other end of the second spring 44 is rotatably disposed on the inner wall of the recovery chamber 63. A floating plate 621 is provided in the mother liquid chamber 62. The floating plate 621 has the freedom to slide longitudinally in the mother liquid chamber 62. When the mother liquid chamber 62 is full of liquid, the floating plate 621 rises and blocks the first baffle 41, so that the liquid flowing to the separation housing 61 will not enter the mother liquid chamber 62.
[0038] Reference Figure 2 A cleaning port 113 is provided on one side of the top of the centrifuge shell 11, and a rinsing assembly 2 is provided on the cleaning port 113. One end of the rinsing assembly 2 is located inside the filter cartridge 13. The rinsing assembly 2 includes a cleaning pipe 21, multiple sets of cleaning nozzles 22, and a water tank 23. The water tank 23 is located on the top of the centrifuge shell 11. One end of the cleaning pipe 21 is fixedly connected to the top of the centrifuge shell 11 and communicates with the water tank 23. The other end of the cleaning pipe 21 is located inside the filter cartridge 13. Multiple sets of cleaning nozzles 22 are evenly arranged longitudinally on the cleaning pipe 21 and communicate with the cleaning pipe 21. After the mother liquor is separated to a certain quantity and all the separated mother liquor flows into the mother liquor cavity 62, the solid part attached to the filter cartridge 13 is rinsed with methanol. The water tank 23 is provided with rinsing methanol. The rinsing methanol is used to rinse the solid part on the inner wall of the filter cartridge 13 through the cleaning pipe 21 and multiple sets of cleaning nozzles 22. The filter cartridge 13 is driven by a motor 14 to rotate in the forward direction, so that it can be rinsed in all directions.
[0039] Reference Figure 2 , Figure 3 and Figure 5A starting structure 5 is provided inside the side wall of the centrifuge shell 11. The starting structure 5 includes a starting cavity 51, a driving block 52, a locking cylinder 53, a locking spring 54, and a locking block 55. One end of the starting cavity 51 is connected to one end of the cleaning tube 21. One end of the driving block 52 is slidably disposed inside one end of the starting cavity 51, and the other end of the driving block 52 is disposed inside the cleaning tube 21. The locking spring 54 is sleeved on the driving block 52, with one end of the locking spring 54 fixedly disposed inside the starting cavity 51 and the other end of the locking spring 54 fixedly disposed on the driving block 52. The locking cylinder 53 is disposed inside the recovery cavity 63. The other end is connected to the locking cylinder 53, and one end of the locking block 55 is slidably disposed in the locking cylinder 53. When the methanol is introduced into the cleaning pipe 21 for flushing, the pressure of the liquid causes the driving block 52 to break through the force of the locking spring 54 and slide into the starting chamber 51, driving the locking block 55 to slide into the locking cylinder 53. At the same time, the flushing methanol is sprayed out from the cleaning nozzle 22. A groove is provided at the other end of the locking block 55 so that the second baffle 42 rotates and opens the recovery chamber 63 when subjected to the flushing methanol force. When the water tank 23 is not opened, the locking block 55 remains popped out and abuts against the second baffle 42, and the second baffle 42 seals the recovery chamber 63.
[0040] Reference Figure 2 and Figure 4 A scraper assembly 3 is provided on the other side of the top of the centrifuge shell 11, and the scraper assembly 3 is disposed inside the filter cartridge 13. The scraper assembly 3 includes a scraper shaft 31, a drive shaft 32, a scraper 33, and a return spring 34. One end of the drive shaft 32 is rotatably disposed on the top of the centrifuge shell 11, and a drive groove 321 is provided on one end of the drive shaft 32, with inclined surfaces on both sides of the drive groove 321. One end of the scraper shaft 31 is rotatably disposed on the other end of the drive shaft 32. Top blocks 322 are provided on both sides of the other end of the drive shaft 32, and the top blocks 322 are used to abut against the scraper shaft 31 to make the drive shaft 32 rotate. The scraper 33 is disposed on the scraper shaft 31, and the return spring 34 is disposed on the scraper shaft 31. One end of the 4 is rotatably mounted on the scraper 33, and the other end of the return spring 34 is rotatably mounted on the top of the centrifugal housing 11; one side of the scraper 33 abuts against the inside of the filter cylinder 13; a material inlet 114 is provided on the side of the centrifugal housing 11; through the rotation of the centrifugal assembly 12 and the filter cylinder 13, the solid part attached to the inner wall of the filter cylinder 13 becomes thicker and thicker, causing the scraper 33 to drive the scraper shaft 31 to rotate as the thickness increases. When it rotates to a certain position, the scraper shaft 31 will abut against a set of top blocks 322 to make the drive shaft 32 rotate. At this time, the drive motor 14 makes the filter cylinder 13 rotate in the opposite direction, and the return spring 34 scrapes the solid part off the filter cylinder 13.
[0041] Reference Figure 2 and Figure 4The centrifuge housing 11 is equipped with a material handling structure 9, which includes a material handling chamber 91, a sliding block 92, a sliding spring 93, and a sliding plate 94. The material handling chamber 91 is disposed within the shell wall of the centrifuge housing 11. One end of the sliding plate 94 is slidably disposed at one end of the material handling chamber 91, and the other end of the sliding plate 94 is slidably disposed at the liquid outlet 112. One end of the sliding block 92 is slidably disposed within the other end of the material handling chamber 91, and the other end of the sliding block 92 abuts against the side of the drive shaft 32. The sliding spring 93 is sleeved on the sliding block 92, with one end of the sliding spring 93 fixedly disposed within the material handling chamber 91 and the other end of the sliding spring 93 fixedly disposed within the sliding block 92. The scraper shaft 31 abuts against a set of top blocks 322, causing the drive shaft 32 to rotate. After the drive shaft 32 rotates, the sliding block 92 abuts against the inclined surface of the drive groove 321. With the force of the sliding spring 93, the sliding block 92 is pushed into the drive groove 321. The pressure transmitted through the material taking chamber 91 causes the sliding plate 94 to block the liquid outlet 112. The sliding plate 94 is set at an inclination. At this time, the residual liquid is discharged by opening the material taking port 114 first. Then, the filter cartridge 13 is rotated in the opposite direction to scrape off the solids in the filter cartridge 13. At this time, the solid material will not fall into the separation and recovery unit 6, and the solid material slides out through the material taking port 114. When scraping, the scraper shaft 31 will be reset to rotate by the force of the reset spring 34. It will abut against another set of top blocks 322 on the drive shaft 32 to abut against the drive shaft 32 to rotate and reset. The sliding block 92 is pushed out by the inclined surface of the drive groove 321 to open the sliding plate 94.
[0042] The working principle of the glycine mother liquor flushing and recovery device in this application is as follows: the drive motor 14 drives the filter cartridge 13 to rotate in a preset direction, and the first motor 123 drives the rotating drum 122 to rotate synchronously through the rotating shaft 121, so that the rotating drum 122 and the filter cartridge 13 form a coordinated centrifugal motion. The mother liquor to be treated is injected into the rotating drum 122 through the feed port 111 at the top of the centrifuge shell 11. Under the high-speed rotation of the rotating drum 122, the mother liquor is subjected to centrifugal force and is thrown outward through multiple sets of circumferential throwing holes 1222. The thrown mother liquor comes into contact with the inner wall of the filter cartridge 13, which is also rotating at high speed. The filtration structure of the filter cartridge 13 intercepts and adsorbs the solid particles in the mother liquor on its inner wall, realizing the initial separation of solid and liquid. The separated liquid passes through the filter cartridge 13 and collects at the liquid outlet 112 at the bottom of the centrifuge shell 11. After centrifugal separation, the liquid flows into the separation housing 61 of the separation and recovery unit 6 through the outlet 112. At this time, the starting structure 5 inside the separation housing 61 is in its initial state. The locking block 55 is held in place by the elastic force of the locking spring 54, pressing against the second baffle 42 inside the recovery chamber 63, thus keeping the recovery chamber 63 closed. Simultaneously, the first baffle 41 inside the mother liquor chamber 62 opens under the force of the liquid, allowing the liquid to flow smoothly into the mother liquor chamber 62. As the liquid continues to be injected, the floating plate 621 inside the mother liquor chamber 62 slides longitudinally as the liquid level rises until the mother liquor chamber 62 is full. Then, the floating plate 621 rises and presses against the first baffle 41, closing the first baffle 41 and preventing further liquid from entering the mother liquor chamber. The liquid chamber 62 ensures the quantitative storage of the mother liquor. After the mother liquor centrifugation is completed and all the liquid flows into the mother liquor chamber 62, the flushing assembly 2 is started to clean the solid materials. The control switch of the water tank 23 is turned on, and the flushing methanol in the water tank 23 is transported into the filter cartridge 13 through the cleaning pipe 21. The pressure generated by the methanol flow acts on the drive block 52 in the cleaning pipe 21, causing the drive block 52 to overcome the elastic force of the locking spring 54 and slide into the starting chamber 51. The sliding of the drive block 52 transmits pressure through the communication channel between the starting chamber 51 and the locking cylinder 53, pushing the locking block 55 in the locking cylinder 53 to slide into the cylinder, releasing the abutment restriction on the second baffle 42, so that the recovery chamber 63 is in the open state.Simultaneously, methanol is sprayed and rinsed from all directions onto the solid particles adsorbed on the inner wall of the filter cartridge 13 through multiple sets of cleaning nozzles 22 evenly distributed longitudinally on the cleaning pipe 21. At this time, the drive motor 14 keeps the filter cartridge 13 rotating in the forward direction to ensure that the cleaning nozzles 22 can cover all solid attachment areas on the inner wall of the filter cartridge 13, washing away the effective components or impurities remaining on the surface of the solid particles. The cleaned methanol mixture flows into the separation shell 61 under the action of gravity. Since the mother liquor chamber 62 has been closed by the floating plate 621 and the first baffle 41, the mixture directly enters the open recovery chamber 63. Subsequently, controlled by the second switch valve 85 of the auxiliary extraction unit 8, the mixture in the recovery chamber 63 enters the washing liquid tank 81 through the third pipeline 83, and then... The feed is conveyed to the extraction vessel 82 via the second feed pump 86 and the fourth pipeline 84 for subsequent auxiliary extraction treatment, realizing the recovery and utilization of the eluted components. As the cleaning process proceeds, the solid particles on the inner wall of the filter cartridge 13 gradually accumulate and thicken. The thickened solid particles will generate radial pressure on the scraper 33 of the scraper assembly 3. The scraper 33 is always in contact with the inner wall of the filter cartridge 13. When the thickness of the solid particles reaches the preset value, the generated pressure drives the scraper shaft 31 to rotate around its rotation fulcrum until the scraper shaft 31 abuts against a set of top blocks 322 at the other end of the drive shaft 32. The continuous rotation of the scraper shaft 31 drives the drive shaft 32 to rotate synchronously. At this time, the drive motor 14 can be controlled to switch the direction of rotation, driving the filter cartridge 13 to rotate in the opposite direction. Secondly, when the drive shaft 32 rotates... The inclined surface of the drive groove 321 on the side of the drive shaft 32 contacts the sliding block 92 of the material taking structure 9. Under the elastic force of the sliding spring 93, the sliding block 92 springs into the drive groove 321. Through the pressure transmission of the material taking chamber 91, the sliding plate 94 is pushed to slide along the material taking chamber 91 and close the liquid outlet 112 at the bottom of the centrifuge shell 11. The sliding plate 94 is inclined to facilitate the subsequent material discharge. The material taking port 114 on the side of the centrifuge shell 11 is opened to first discharge the small amount of cleaning liquid remaining in the filter cartridge 13. Then, under the reverse rotation of the filter cartridge 13 and the scraping action of the scraper 33, the solid material on the inner wall of the filter cartridge 13 is scraped off and slides out from the material taking port 114 along the inclined sliding plate 94, completing the recovery of solid material. After scraping is completed, Under the elastic force of the return spring 34, the scraper 33 drives the scraper shaft 31 to rotate in the opposite direction to reset. The scraper shaft 31 abuts against another set of top blocks 322 on the drive shaft 32, pushing the drive shaft 32 to rotate and reset. During the reset process of the drive shaft 32, the inclined surface of the drive groove 321 pushes the sliding block 92 out of the groove. Under the action of the sliding spring 93, the sliding block 92 returns to the initial position. The sliding plate 94 releases the seal on the liquid outlet 112, and the material taking structure 9 returns to the initial state. After the mother liquor chamber 62 is filled with the separated liquid, the first switch valve 75 in the first pipeline 73 is opened. The mother liquor to be purified in the mother liquor chamber 62 flows into the mother liquor pool 71 of the distillation and purification unit 7 through the first pipeline 73 under the action of gravity or pressure difference, realizing the temporary storage of the mother liquor.The first feed pump 76 is started, and the mother liquor in the mother liquor tank 71 is transported to the distillation column 72 through the second pipeline 74. The distillation column 72 operates according to the preset distillation process parameters to separate and purify the target components in the mother liquor, ultimately obtaining a product that meets the purity requirements, thus completing the mother liquor distillation process.
[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A device for flushing and recovering glycine mother liquor, characterized in that: The system includes a centrifugal unit (1), a separation and recovery unit (6), and a distillation and purification unit (7) connected in sequence. The centrifugal unit (1) includes a centrifugal shell (11), a centrifugal assembly (12), a filter cartridge (13), and a drive motor (14). The filter cartridge (13) is located at the bottom of the centrifugal shell (11) via the drive motor (14), which drives the filter cartridge (13) to rotate. One end of the centrifugal assembly (12) is rotatably located at the top of the centrifugal shell (11), and the other end of the centrifugal assembly (12) is located inside the filter cartridge (13). The centrifuge housing (11) has a feed inlet (111) at the top, which is connected to the centrifuge assembly (12); the centrifuge housing (11) has a liquid outlet (112) at the bottom, and the separation and recovery unit (6) is connected to the liquid outlet (112); the separation and recovery unit (6) includes a separation housing (61), which is divided into a mother liquor chamber (62) and a recovery chamber (63); the distillation and purification unit (7) is connected to the mother liquor chamber (62); and the recovery chamber (63) is connected to an auxiliary extraction unit (8).
2. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: The centrifugal assembly (12) includes a rotating shaft (121), a rotating drum (122), and a first motor (123). The rotating drum (122) has an opening (1221) at its top, and the feed inlet (111) is connected to the rotating drum (122) through the opening (1221). The rotating drum (122) has multiple sets of ejection holes (1222) arranged circumferentially. The rotating shaft (121) is rotatably mounted on the top of the centrifugal housing (11), and one end of the rotating shaft (121) is fixedly connected to the rotating drum (122) through the opening (1221). The working end of the first motor (123) is fixedly mounted on the other end of the rotating shaft (121), and the base of the first motor (123) is mounted outside the top of the centrifugal housing (11).
3. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: A cleaning port (113) is provided on one side of the top of the centrifuge shell (11), and a rinsing assembly (2) is provided on the cleaning port (113). One end of the rinsing assembly (2) is located inside the filter cartridge (13). The rinsing assembly (2) includes a cleaning pipe (21), multiple sets of cleaning nozzles (22), and a water tank (23). The water tank (23) is located on the top of the centrifuge shell (11). One end of the cleaning pipe (21) is fixedly connected to the top of the centrifuge shell (11) and communicates with the water tank (23). The other end of the cleaning pipe (21) is located inside the filter cartridge (13). Multiple sets of cleaning nozzles (22) are evenly arranged longitudinally on the cleaning pipe (21), and the cleaning nozzles (22) communicate with the cleaning pipe (21).
4. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: A scraper assembly (3) is provided on the other side of the top of the centrifuge shell (11), and the scraper assembly (3) is disposed inside the filter cartridge (13); the scraper assembly (3) includes a scraper shaft (31), a drive shaft (32), a scraper (33), and a return spring (34); one end of the drive shaft (32) is rotatably disposed on the top of the centrifuge shell (11), and a drive groove (321) is provided on one end of the drive shaft (32), the two sides of the drive groove (321) being inclined surfaces; one end of the scraper shaft (31) is rotatably disposed on the top of the centrifuge shell (11). The other end of the drive shaft (32); top blocks (322) are provided on both sides of the other end of the drive shaft (32), the top blocks (322) are used to abut against the scraper shaft (31) to drive the drive shaft (32) to rotate; the scraper (33) is provided on the scraper shaft (31), one end of the return spring (34) is rotatably provided on the scraper (33), and the other end of the return spring (34) is rotatably provided on the top of the centrifuge shell (11); one side of the scraper (33) abuts against the inside of the filter cartridge (13).
5. The device for flushing and recovering glycine mother liquor according to claim 4, characterized in that: The centrifuge shell (11) is provided with a material inlet (114) on its side; the centrifuge shell (11) is provided with a material inlet structure (9), which includes a material inlet cavity (91), a sliding block (92), a sliding spring (93), and a sliding plate (94); the material inlet cavity (91) is disposed inside the shell wall of the centrifuge shell (11); one end of the sliding plate (94) is slidably disposed at one end of the material inlet cavity (91), and the other end of the sliding plate (94) is slidably disposed on the liquid outlet (112); one end of the sliding block (92) is slidably disposed inside the other end of the material inlet cavity (91), and the other end of the sliding block (92) abuts against the side of the drive shaft (32); the sliding spring (93) is sleeved on the sliding block (92), one end of the sliding spring (93) is fixedly disposed inside the material inlet cavity (91), and the other end of the sliding spring (93) is fixedly disposed on the sliding block (92).
6. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: The separation housing (61) is provided with a swing flap assembly (4) including a first baffle (41), a second baffle (42), a first spring (43), and a second spring (44); one end of the first baffle (41) is rotatably disposed on one side of the mother liquor chamber (62); one end of the second baffle (42) is rotatably disposed on one side of the recovery chamber (63); one end of the first spring (43) is rotatably disposed on the first baffle (41), and the other end of the first spring (43) is rotatably disposed on the inner wall of the mother liquor chamber (62); one end of the second spring (44) is rotatably disposed on the second baffle (42), and the other end of the second spring (44) is rotatably disposed on the inner wall of the recovery chamber (63).
7. The device for flushing and recovering glycine mother liquor according to claim 3, characterized in that: The centrifuge shell (11) is provided with a starting structure (5) in the side wall. The starting structure (5) includes a starting cavity (51), a driving block (52), a locking cylinder (53), a locking spring (54), and a locking block (55). One end of the starting cavity (51) is connected to one end of the cleaning tube (21). One end of the driving block (52) is slidably disposed in one end of the starting cavity (51), and the other end of the driving block (52) is disposed in the cleaning tube (21). The locking spring (54) is sleeved on the driving block (52). One end of the locking spring (54) is fixedly disposed in the starting cavity (51), and the other end of the locking spring (54) is fixedly disposed on the driving block (52). The locking cylinder (53) is disposed in the recovery cavity (63). The other end of the starting cavity (51) is connected to the locking cylinder (53), and one end of the locking block (55) is slidably disposed in the locking cylinder (53).
8. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: A floating plate (621) is provided inside the mother liquid cavity (62), and the floating plate (621) has the freedom to slide longitudinally in the mother liquid cavity (62).
9. The device for flushing and recovering glycine mother liquor according to claim 1, characterized in that: The distillation and purification unit (7) includes a mother liquor tank (71), a distillation column (72), a first pipeline (73), and a second pipeline (74); the mother liquor tank (71) is connected to the mother liquor chamber (62) through the first pipeline (73), and a first switching valve (75) is provided in the first pipeline (73); the distillation column (72) is connected to the mother liquor tank (71) through the second pipeline (74), and a first feed pump (76) is provided in the second pipeline (74).
10. The device for recovering glycine mother liquor according to claim 1, characterized in that: The auxiliary extraction unit (8) includes a washing liquid tank (81), an extraction vessel (82), a third pipeline (83), and a fourth pipeline (84); the washing liquid tank (81) is connected to the recovery chamber (63) through the third pipeline (83), and a second switching valve (85) is provided in the third pipeline (83); the extraction vessel (82) is connected to the washing liquid tank (81) through the fourth pipeline (84), and a second feed pump (86) is provided in the fourth pipeline (84).