System and method for treating vitamin B1 centrifugal mother liquor by enhanced wet oxidation

Abstract

The present invention discloses a system and a method for using a vitamin B1 centrifugal mother liquor for enhanced wet oxidation treatment, wherein the system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor comprises an oxidation reaction system, a decarbonization system, and a deep treatment system, wherein the oxidation reaction system comprises a catalyst tank, a high-efficiency mixer, a wastewater buffer tank, a heat exchanger, a tower heat exchanger, a tubular reactor, and a gas-liquid separator in sequence; the decarbonization system comprises an acid tank, a high-efficiency mixer, a carbon adsorption regeneration device, an alkali tank, and a high-efficiency mixer in sequence; and the deep treatment system comprises a resin adsorption regeneration tower, an ozone oxidation tower, and an evaporation device in sequence. The present invention achieves the goal of increasing oxidation efficiency and reducing costs by adding a decarbonization system and reducing the carbonate concentration in the wastewater to increase the free radical oxidation rate.

Description

Technical Field

[0001] The invention relates to the technical field of vitamin production, and in particular to a system and a method for using the system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor. Background Art

[0002] Vitamin B1, also known as thiamine, is the first water-soluble vitamin discovered and the vitamin with the longest synthetic route, and has attracted widespread attention. Its key intermediate thiothiamine is prepared from diaminopyrimidine and 3-chloro-5-hydroxy-2-pentanone as starting materials through a series of reactions. The vitamin B1 centrifuge mother liquor is a mixture of enamine mother liquor (o-chloroaniline hydrochloride, after sodium is added to synthesize enamine, the wastewater separated by centrifuge) and chloroester layered water (wastewater formed by layering after the synthesis of 3-chloro-5-hydroxy-2-pentanone). The main reactions are shown below.

[0003]

[0004] Vitamin B1 centrifugal mother liquor solution belongs to high-salt, high-COD, difficult-to-degrade organic wastewater, and catalytic wet oxidation technology can treat it well. Vitamin B1 centrifugal mother liquor solution is alkaline, which causes the carbon dioxide generated by the reaction to be converted into carbonate; during the catalytic wet oxidation reaction, 3-chloro-5-hydroxy-2-pentanone further decomposes under high temperature conditions to produce carbonate, and carbonate produced by unsaturated carbon-based bond breaking such as enamine is produced at the same time, resulting in a significant increase in the carbonate concentration in the water in a short period of time, which greatly inhibits the generation rate of hydroxyl radicals during the catalytic wet oxidation process, resulting in a reduction in the oxidation effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a system and a method for using the enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A system for treating vitamin B1 centrifugal mother liquor by enhanced wet oxidation, comprising: an oxidation reaction system, a decarbonization system, and a deep treatment system, wherein the oxidation reaction system is provided with two wastewater inlets and two wastewater outlets;

[0008] The wastewater outlet 1 of the oxidation reaction system is connected to the decarbonization system, and the wastewater outlet of the decarbonization system is connected to the wastewater inlet 2 of the oxidation reaction system;

[0009] The second wastewater outlet of the oxidation reaction system is connected to the deep treatment system.

[0010] Preferably, the oxidation reaction system comprises a catalyst tank, a high-efficiency mixer, a wastewater buffer tank, a heat exchanger, a tower reactor, a tubular reactor, and a gas-liquid separator;

[0011] A high-efficiency mixer 1 and a wastewater inlet are provided in the pipeline from the catalyst tank to the wastewater buffer tank, and the wastewater inlet is located before the high-efficiency mixer 1;

[0012] The outlet of the wastewater buffer tank is connected to the inlet of the heat exchanger through a pipeline, and the pipeline from the wastewater buffer tank to the heat exchanger is connected to the compressed air inlet. A high-efficiency mixer 2 is arranged in the pipeline from the wastewater buffer tank to the heat exchanger, and the compressed air inlet is arranged at the front end of the high-efficiency mixer 2. An air flow meter 1 is arranged in the pipeline between the compressed air inlet and the high-efficiency mixer 2.

[0013] Preferably, the tubular reactor is arranged in a tower reactor, the wastewater inlet of the tubular reactor is connected to the outlet of the decarbonization system through a pipeline, the wastewater outlet of the tubular reactor is connected to the inlet of the heat exchanger through a pipeline, and the wastewater outlet of the heat exchanger is connected to the inlet of the tower reactor through a pipeline;

[0014] The outlet of the tower reactor is connected to the inlet of the decarbonization system through a pipeline;

[0015] The outlet of the heat exchanger is connected to the inlet of the gas-liquid separator through a pipeline. The gas-liquid separator is provided with a waste gas outlet. The second wastewater outlet of the gas-liquid separator is connected to the deep treatment system.

[0016] Preferably, the decarbonization system comprises an acid tank 1, a high-efficiency mixer 3, a carbon adsorption regeneration device, an alkali tank, and a high-efficiency mixer 4, wherein the carbon adsorption regeneration device comprises two sets of carbon dioxide adsorption tanks and an ultrasonic device, the two sets of equipment are connected in parallel, and the ultrasonic device is arranged on the carbon dioxide adsorption tank;

[0017] The pipeline connected to the compressed air inlet is connected to the pipeline after the high-efficiency mixer four.

[0018] Preferably, the inlet of the carbon adsorption regeneration device is connected to the outlet of the acid tank 1 and the tower reactor through a pipeline, and a high-efficiency mixer 3 is provided in the pipeline from the acid tank 1 and the tower reactor to the carbon adsorption regeneration device;

[0019] The outlet of the carbon adsorption regeneration device, the alkali tank and the inlet of the tubular reactor of the oxidation reaction system are connected through a pipeline, and a high-efficiency mixer 4 is arranged in the pipeline from the outlet of the carbon adsorption regeneration device and the alkali tank to the tubular reactor.

[0020] Preferably, the deep treatment system comprises a catalyst adsorption regeneration tower, an ozone oxidation tower, and an evaporation device. The inlet of the catalyst adsorption regeneration tower is connected to the outlet of the acid tank 2 through a pipeline, the outlet of the catalyst adsorption regeneration tower is connected to the inlet of the ozone oxidation tower through a pipeline, the outlet of the ozone oxidation tower is connected to the inlet of the evaporation device through a pipeline, and the evaporation device is provided with a water outlet and a salt outlet.

[0021] Preferably, the catalyst adsorption regeneration tower inlet is connected to the wastewater outlet of the gas-liquid separator of the oxidation reaction system through a pipeline, and the mother liquor outlet of the evaporation device is connected to the wastewater buffer tank of the oxidation reaction system through a pipeline.

[0022] Preferably, the high-efficiency mixer 1, high-efficiency mixer 2, high-efficiency mixer 3, and high-efficiency mixer 4 all include a mixing outer wall, one end of the mixing outer wall is a mixing inlet, and the other end of the mixing outer wall is a mixing outlet, and the mixing inlet and the mixing outlet are connected to pipelines arranged before and after the mixing outer wall;

[0023] A rotating connection seat is arranged inside the mixing outer wall, a plurality of embedded installation clips are arranged at intervals on the side of the rotating connection seat, the embedded installation clips are clamped in the mixing outer wall, a mixing rotating shaft is rotatably connected to the rotating connection seat, the mixing rotating shaft is located in the mixing outer wall, a mixing impeller is fixedly connected to the mixing rotating shaft, and a flexible mixing strip is arranged outside the mixing impeller;

[0024] A plurality of auxiliary mixing plates are arranged inside the mixing outer wall, a receiving hole is arranged at the center of the auxiliary mixing plate, the mixing rotating shaft, the mixing impeller and the flexible mixing strip are located in the receiving hole, and a flow hole is arranged on the auxiliary mixing plate.

[0025] The invention discloses a method for using a system for strengthening wet oxidation treatment of vitamin B1 centrifugal mother liquor, which is applicable to a system for strengthening wet oxidation treatment of vitamin B1 centrifugal mother liquor.

[0026] Preferably, including:

[0027] The vitamin B1 centrifugal mother liquor wastewater and the catalyst are fully mixed in a high-efficiency mixer and then enter the wastewater buffer tank. The wastewater and compressed air are heated by a heat exchanger and then enter the tower reactor for organic matter degradation reaction. The reaction temperature is 180-270°C and the reaction pressure is 4-7MPa. The wastewater at the outlet of the tower reactor is mixed with the acid liquid from the acid tank, and the pH value of the wastewater is adjusted to 1-5. It enters one of the carbon absorption tanks. When it is saturated with absorption, it is switched to another carbon absorption tank. At the same time, the adsorption saturated carbon absorption tank removes carbon dioxide under ultrasonic action. The decarbonized wastewater is mixed with the alkali liquid in the alkali tank, and the pH value of the wastewater is adjusted to 7-9. It enters the tubular reactor together with compressed air to further degrade the organic matter in the wastewater. The effluent is cooled by a heat exchanger and then enters a gas-liquid separator for gas-water separation. The wastewater enters a catalyst adsorption regeneration tower to remove the catalyst. The effluent enters an ozone oxidation tower for further decolorization. After decolorization, the wastewater enters an evaporator to evaporate the effluent. Sodium chloride salt is used as a by-product salt, and the mother liquor enters the wastewater buffer tank of the oxidation reaction system.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] During the catalytic wet oxidation process of vitamin B1 centrifugal mother liquor, a lot of carbon dioxide is produced. When it is converted into carbonate under alkaline conditions, it will accelerate the quenching of free radicals and weaken the wet oxidation efficiency. The present invention can effectively and timely remove carbon from the wastewater by adding a decarbonization system, and the organic matter removal rate is increased by more than 30% compared with the traditional catalytic wet oxidation. By adding a tubular reactor in the tower reactor, it is possible to further carry out the catalytic wet oxidation reactor without adding pressure equipment and heat exchange equipment, thereby significantly reducing the equipment investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the mixer of the present invention;

[0032] Figure 3 A schematic diagram of the structure of the flexible mixing strip of the present invention;

[0033] Figure 4 It is a schematic cross-sectional view of the mixer structure of the present invention;

[0034] Figure 5 It is a schematic diagram of the auxiliary mixing plate structure of the present invention.

[0035] In the figure: 1. oxidation reaction system; 2. deep treatment system; 3. decarbonization system; 11. catalyst tank; 12. high-efficiency mixer 1; 13. wastewater buffer tank; 14. high-efficiency mixer 2; 15. heat exchanger; 16. tower reactor; 17. tubular reactor; 18. air flow meter 1; 19. air flow meter 2; 20. gas-liquid separator; 21. acid tank 1; 22. high-efficiency mixer 3; 23. carbon adsorption regeneration device; 24. alkali tank; 25. high-efficiency mixer 4; 31. catalyst adsorption regeneration tower; 32. acid tank 2; 33. ozone oxidation tower; 34. evaporation device; 50. mixing outer wall; 51. mixing inlet; 52. mixing outlet; 53. rotating connection seat; 54. mixing rotating shaft; 55. mixing impeller; 56. flexible mixing strip; 57. embedded installation card strip; 58. auxiliary mixing plate; 59. mixing flow; 60. accommodating hole; 61. flow hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example 1

[0038] See also Figure 1 The present invention provides a technical solution: a system for strengthening wet oxidation treatment of vitamin B1 centrifugal mother liquor, comprising: an oxidation reaction system 1, a decarbonization system 3, and a deep treatment system 2, wherein the oxidation reaction system 1 is provided with two wastewater inlets and two wastewater outlets;

[0039] The wastewater outlet 1 of the oxidation reaction system 1 is connected to the decarbonization system 3, and the wastewater outlet of the decarbonization system 3 is connected to the wastewater inlet 2 of the oxidation reaction system 1;

[0040] The second wastewater outlet of the oxidation reaction system 1 is connected to the deep treatment system 2 .

[0041] Preferably, the oxidation reaction system 1 comprises a catalyst tank 11, a high-efficiency mixer 12, a wastewater buffer tank 13, a heat exchanger 15, a tower reactor 16, a tubular reactor 17, a gas-liquid separator 20

[0042] The pipeline from the catalyst tank 11 to the wastewater buffer tank 13 is provided with a high-efficiency mixer 12 and a wastewater inlet, and the wastewater inlet is located before the high-efficiency mixer 12;

[0043] The outlet of the wastewater buffer tank 13 is connected to the inlet of the heat exchanger 15 through a pipeline, and the pipeline from the wastewater buffer tank 13 to the heat exchanger 15 is connected to the compressed air inlet. A high-efficiency mixer 14 is arranged in the pipeline from the wastewater buffer tank 13 to the heat exchanger 15, and the compressed air inlet is arranged at the front end of the high-efficiency mixer 14. An air flow meter 18 is arranged in the pipeline between the compressed air inlet and the high-efficiency mixer 14.

[0044] Preferably, the tubular reactor 17 is disposed in the tower reactor 16, the wastewater inlet of the tubular reactor 17 is connected to the outlet of the decarbonization system 3 through a pipeline, the wastewater outlet of the tubular reactor 17 is connected to the inlet of the heat exchanger 15 through a pipeline, and the wastewater outlet of the heat exchanger 15 is connected to the inlet of the tower reactor 16 through a pipeline;

[0045] The outlet of the tower reactor 16 is connected to the inlet of the decarbonization system 3 through a pipeline;

[0046] The outlet of the heat exchanger 15 is connected to the inlet of the gas-liquid separator 20 through a pipeline. The gas-liquid separator 20 is provided with a waste gas outlet. The second wastewater outlet of the gas-liquid separator 20 is connected to the deep treatment system 2.

[0047] Preferably, the decarbonization system 3 comprises an acid tank 21, a high-efficiency mixer 22, a carbon adsorption regeneration device 23, an alkali tank 24, and a high-efficiency mixer 25, wherein the carbon adsorption regeneration device 23 comprises two sets of carbon dioxide adsorption tanks and an ultrasonic device, the two sets of equipment are connected in parallel, and the ultrasonic device is arranged on the carbon dioxide adsorption tank;

[0048] The pipeline connected to the compressed air inlet is connected to the pipeline after the high-efficiency mixer 25.

[0049] Preferably, the inlet of the carbon adsorption regeneration device 23 is connected to the outlet of the acid tank 21 and the tower reactor 16 through a pipeline, and a high-efficiency mixer 3 22 is provided in the pipeline from the acid tank 21 and the tower reactor 16 to the carbon adsorption regeneration device 23;

[0050] The outlet of the carbon adsorption regeneration device 23, the alkali tank 24 and the inlet of the tubular reactor 17 of the oxidation reaction system 1 are connected through a pipeline, and a high-efficiency mixer 25 is arranged in the pipeline from the outlet of the carbon adsorption regeneration device 23 and the alkali tank 24 to the tubular reactor 17.

[0051] Preferably, the deep treatment system 2 comprises a catalyst adsorption regeneration tower 31, an ozone oxidation tower 33, and an evaporation device 34, the inlet of the catalyst adsorption regeneration tower 31 is connected to the outlet of the acid tank 2 32 through a pipeline, the outlet of the catalyst adsorption regeneration tower 31 is connected to the inlet of the ozone oxidation tower 33 through a pipeline, the outlet of the ozone oxidation tower 33 is connected to the inlet of the evaporation device 34 through a pipeline, and the evaporation device 34 is provided with a water outlet and a salt outlet.

[0052] Preferably, the inlet of the catalyst adsorption regeneration tower 31 is connected to the wastewater outlet of the gas-liquid separator 20 of the oxidation reaction system 1 through a pipeline, and the mother liquor outlet of the evaporation device 34 is connected to the wastewater buffer tank 13 of the oxidation reaction system 1 through a pipeline.

[0053] The working principle and beneficial effects of the above scheme:

[0054] The vitamin B1 centrifugal mother liquor wastewater and the catalyst are fully mixed in the high-efficiency mixer 12 and then enter the wastewater buffer tank 13. The wastewater and compressed air are heated in the heat exchanger 15 and then enter the tower reactor 16 for organic matter degradation reaction. The reaction temperature is 180-270°C and the reaction pressure is 4-7MPa. The wastewater at the outlet of the tower reactor 16 is mixed with the acid solution from the acid tank 21. The pH value of the wastewater is adjusted to 1-5 and enters one of the carbon absorption tanks. When it is saturated, it is switched to another carbon absorption tank. At the same time, the adsorption saturated carbon absorption tank is in the ultrasonic The wastewater is mixed with the alkali solution in the alkali tank 24 after carbon removal, and the pH value of the wastewater is adjusted to 7-9. The wastewater enters the tubular reactor 17 together with the compressed air to further degrade the organic matter in the wastewater. The effluent is cooled by the heat exchanger 15, and then enters the gas-liquid separator 20 for gas-water separation. The wastewater enters the catalyst adsorption regeneration tower 31 to remove the catalyst, and the effluent enters the ozone oxidation tower 33 for further decolorization. After decolorization, the wastewater enters the evaporation device 34, evaporates the effluent, and the sodium chloride salt is used as the by-product salt. The mother liquor enters the wastewater buffer tank 13 of the oxidation reaction system 1;

[0055] During the catalytic wet oxidation process of vitamin B1 centrifugal mother liquor, a large amount of carbon dioxide is produced. When converted into carbonate under alkaline conditions, it will accelerate the quenching of free radicals and weaken the wet oxidation efficiency. The present invention reduces the carbonate concentration in the wastewater by adding a decarbonization system 3 to increase the free radical oxidation rate, thereby effectively and timely removing carbon from the wastewater, and the organic matter removal rate is increased by more than 30% compared with the traditional catalytic wet oxidation. By adding a tubular reactor 17 in the tower reactor 16, it is possible to further carry out a catalytic wet oxidation reactor without adding pressure equipment and heat exchange equipment, thereby significantly reducing the equipment investment cost.

[0056] Example 2

[0057] See also Figure 2-5On the basis of Example 1, the high-efficiency mixer 12, the high-efficiency mixer 24, the high-efficiency mixer 32, and the high-efficiency mixer 4 25 all include a mixing outer wall 50, one end of the mixing outer wall 50 is a mixing inlet 51, and the other end of the mixing outer wall 50 is a mixing outlet 52, and the mixing inlet 51 and the mixing outlet 52 are connected to the pipelines arranged before and after the mixing outer wall 50;

[0058] The mixing outer wall 50 is provided with a rotating connection seat 53, and a plurality of embedded installation clips 57 are provided at intervals on the side of the rotating connection seat 53. The embedded installation clips 57 are clamped in the mixing outer wall 50. The rotating connection seat 53 is rotatably connected with a mixing rotating shaft 54, and the mixing rotating shaft 54 ​​is located in the mixing outer wall 50. A mixing impeller 55 is fixedly connected to the mixing rotating shaft 54, and a flexible mixing strip 56 is provided on the outer side of the mixing impeller 55.

[0059] A plurality of auxiliary mixing plates 58 are arranged in the mixing outer wall 50 , a receiving hole 60 is arranged at the center of the auxiliary mixing plate 58 , the mixing rotating shaft 54 ​​, the mixing impeller 55 , and the flexible mixing strip 56 are located in the receiving hole 60 , and a flow hole 61 is arranged on the auxiliary mixing plate 58 .

[0060] The working principle and beneficial effects of the above scheme:

[0061] When the substances in the pipeline are mixed, different substances flow through the mixing outer wall 50 at the same time, and the power of the substance flow drives the mixing impeller 55 to rotate, thereby changing the flow direction of the different substances in the mixing outer wall 50, and making the different substances collide with the flexible mixing strip 56 provided in the mixing outer wall 50, thereby changing the flow direction of the different substances in the mixing outer wall 50 again to form a mixed flow 59. In the process of constantly changing the flow direction, different substances blend with each other and mix. While the above actions are occurring, different substances pass through the flow holes 61 on the auxiliary mixing plate 58 and are mixed again, thereby ensuring the uniformity of the substance mixing.

[0062] Example 3

[0063] See also Figure 1 The present invention provides a technical solution: a method for using a system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor, which is suitable for a system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor.

[0064] Preferably, including:

[0065] The vitamin B1 centrifugal mother liquor wastewater and the catalyst are fully mixed in the high-efficiency mixer 12 and then enter the wastewater buffer tank 13. The wastewater and compressed air are heated in the heat exchanger 15 and then enter the tower reactor 16 for organic matter degradation reaction. The reaction temperature is 180-270°C and the reaction pressure is 4-7MPa. The wastewater at the outlet of the tower reactor 16 is mixed with the acid solution from the acid tank 21. The pH value of the wastewater is adjusted to 1-5 and enters one of the carbon absorption tanks. When it is saturated, it is switched to another carbon absorption tank. At the same time, the adsorption saturated carbon absorption tank is in the ultrasonic The wastewater is mixed with the alkali solution in the alkali tank 24 after decarbonization, and the pH value of the wastewater is adjusted to 7-9. The wastewater enters the tubular reactor 17 together with the compressed air to further degrade the organic matter in the wastewater. The effluent is cooled by the heat exchanger 15, and then enters the gas-liquid separator 20 for gas-water separation. The wastewater enters the catalyst adsorption regeneration tower 31 to remove the catalyst, and the effluent enters the ozone oxidation tower 33 for further decolorization. The decolorized wastewater enters the evaporator 34, evaporates the effluent, and the sodium chloride salt is used as the by-product salt. The mother liquor enters the wastewater buffer tank 13 of the oxidation reaction system 1.

[0066] The working principle and beneficial effects of the above scheme:

[0067] During the catalytic wet oxidation process of vitamin B1 centrifugal mother liquor, a large amount of carbon dioxide is produced. When converted into carbonate under alkaline conditions, it will accelerate the quenching of free radicals and weaken the wet oxidation efficiency. The present invention reduces the carbonate concentration in the wastewater by adding a decarbonization system 3 to increase the free radical oxidation rate, thereby effectively and timely removing carbon from the wastewater, and the organic matter removal rate is increased by more than 30% compared with the traditional catalytic wet oxidation. By adding a tubular reactor 17 in the tower reactor 16, it is possible to further carry out a catalytic wet oxidation reactor without adding pressure equipment and heat exchange equipment, thereby significantly reducing the equipment investment cost.

[0068] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor, characterized in that: include: An oxidation reaction system (1), a decarbonization system (3), and a deep treatment system (2), wherein the oxidation reaction system (1) is provided with two wastewater inlets and two wastewater outlets; The wastewater outlet 1 of the oxidation reaction system (1) is connected to the decarbonization system (3), and the wastewater outlet of the decarbonization system (3) is connected to the wastewater inlet 2 of the oxidation reaction system (1); The second wastewater outlet of the oxidation reaction system (1) is connected to the deep treatment system (2); The oxidation reaction system (1) comprises a catalyst tank (11), a high-efficiency mixer (12), a wastewater buffer tank (13), a heat exchanger (15), a tower reactor (16), a tubular reactor (17), and a gas-liquid separator (20); A high-efficiency mixer (12) and a wastewater inlet are provided in the pipeline from the catalyst tank (11) to the wastewater buffer tank (13), and the wastewater inlet is located before the high-efficiency mixer (12); The outlet of the wastewater buffer tank (13) is connected to the inlet of the heat exchanger (15) through a pipeline, the pipeline from the wastewater buffer tank (13) to the heat exchanger (15) is connected to the compressed air inlet, a high-efficiency mixer (14) is arranged in the pipeline from the wastewater buffer tank (13) to the heat exchanger (15), and the compressed air inlet is arranged at the front end of the high-efficiency mixer (14), and an air flow meter (18) is arranged in the pipeline between the compressed air inlet and the high-efficiency mixer (14); The tubular reactor (17) is arranged in the tower reactor (16), the wastewater inlet of the tubular reactor (17) is connected to the outlet of the decarbonization system (3) through a pipeline, the wastewater outlet of the tubular reactor (17) is connected to the inlet of the heat exchanger (15) through a pipeline, and the wastewater outlet of the heat exchanger (15) is connected to the inlet of the tower reactor (16) through a pipeline; The outlet of the tower reactor (16) is connected to the inlet of the decarbonization system (3) through a pipeline; The outlet of the heat exchanger (15) is connected to the inlet of the gas-liquid separator (20) through a pipeline, the gas-liquid separator (20) is provided with a waste gas outlet, and the second waste water outlet of the gas-liquid separator (20) is connected to the deep treatment system (2); The decarbonization system (3) comprises an acid tank (21), a high-efficiency mixer (22), a carbon adsorption regeneration device (23), an alkali tank (24), and a high-efficiency mixer (25); the carbon adsorption regeneration device (23) comprises two sets of carbon dioxide adsorption tanks and an ultrasonic device, the two sets of equipment are connected in parallel, and the ultrasonic device is arranged on the carbon dioxide adsorption tank; The pipeline connected to the compressed air inlet is connected to the pipeline after the high-efficiency mixer four (25); The inlet of the carbon adsorption regeneration device (23) is connected to the outlet of the acid tank (21) and the tower reactor (16) through a pipeline, and a high-efficiency mixer (22) is provided in the pipeline from the acid tank (21) and the tower reactor (16) to the carbon adsorption regeneration device (23); The outlet of the carbon adsorption regeneration device (23), the alkali tank (24) and the inlet of the tubular reactor (17) of the oxidation reaction system (1) are connected through a pipeline, and a high-efficiency mixer 4 (25) is arranged in the pipeline from the outlet of the carbon adsorption regeneration device (23) and the alkali tank (24) to the tubular reactor (17).

2. A system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor according to claim 1, characterized in that: The deep treatment system (2) comprises a catalyst adsorption regeneration tower (31), an ozone oxidation tower (33), and an evaporation device (34); the inlet of the catalyst adsorption regeneration tower (31) is connected to the outlet of the second acid tank (32) through a pipeline; the outlet of the catalyst adsorption regeneration tower (31) is connected to the inlet of the ozone oxidation tower (33) through a pipeline; the outlet of the ozone oxidation tower (33) is connected to the inlet of the evaporation device (34) through a pipeline; and the evaporation device (34) is provided with a water outlet and a salt outlet.

3. A system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor according to claim 2, characterized in that: The inlet of the catalyst adsorption regeneration tower (31) is connected to the wastewater outlet of the gas-liquid separator (20) of the oxidation reaction system (1) through a pipeline, and the mother liquor outlet of the evaporation device (34) is connected to the wastewater buffer tank (13) of the oxidation reaction system (1) through a pipeline.

4. A system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor according to claim 3, characterized in that: The high-efficiency mixer 1 (12), the high-efficiency mixer 2 (14), the high-efficiency mixer 3 (22), and the high-efficiency mixer 4 (25) all include a mixing outer wall (50), one end of the mixing outer wall (50) is a mixing inlet (51), and the other end of the mixing outer wall (50) is a mixing outlet (52), and the mixing inlet (51) and the mixing outlet (52) are connected to pipelines arranged before and after the mixing outer wall (50); A rotating connection seat (53) is arranged inside the mixing outer wall (50), and a plurality of embedded mounting clips (57) are arranged at intervals on the side of the rotating connection seat (53), and the embedded mounting clips (57) are clamped in the mixing outer wall (50). A mixing rotating shaft (54) is rotatably connected to the rotating connection seat (53), and the mixing rotating shaft (54) is located inside the mixing outer wall (50). A mixing impeller (55) is fixedly connected to the mixing rotating shaft (54), and a flexible mixing strip (56) is arranged outside the mixing impeller (55); A plurality of auxiliary mixing plates (58) are arranged inside the mixing outer wall (50), a receiving hole (60) is arranged at the center of the auxiliary mixing plate (58), the mixing rotating shaft (54), the mixing impeller (55), and the flexible mixing strip (56) are located inside the receiving hole (60), and a flow hole (61) is arranged on the auxiliary mixing plate (58).

5. A method for using a system for intensified wet oxidation treatment of vitamin B1 centrifugal mother liquor, characterized in that: A system suitable for treating vitamin B1 centrifugal mother liquor by enhanced wet oxidation as described in any one of claims 1 to 4.

6. The method for using the system for enhanced wet oxidation treatment of vitamin B1 centrifugal mother liquor according to claim 5, characterized in that: include: The vitamin B1 centrifugal mother liquor wastewater and the catalyst are fully mixed in a high-efficiency mixer (12) and then enter the wastewater buffer tank (13). The wastewater and compressed air are heated in a heat exchanger (15) and then enter the tower reactor (16) for organic matter degradation reaction. The reaction temperature is 180-270°C and the reaction pressure is 4-7MPa. The wastewater at the outlet of the tower reactor (16) is mixed with the acid solution from the acid tank (21). The pH value of the wastewater is adjusted to 1-5 and enters one of the carbon absorption tanks. When the wastewater is saturated, it is switched to another carbon absorption tank. At the same time, the adsorption saturated carbon absorption tank is desorbed under ultrasonic action. The wastewater after decarbonization is mixed with the alkali liquid in the alkali tank (24), and the pH value of the wastewater is adjusted to 7-9. The wastewater enters the tubular reactor (17) together with the compressed air to further degrade the organic matter in the wastewater. The effluent is cooled by the heat exchanger (15) and then enters the gas-liquid separator (20) for gas-water separation. The wastewater enters the catalyst adsorption regeneration tower (31) to remove the catalyst. The effluent enters the ozone oxidation tower (33) for further decolorization. After decolorization, the wastewater enters the evaporation device (34), evaporates the effluent, and the sodium chloride salt is used as the by-product salt. The mother liquor enters the wastewater buffer tank (13) of the oxidation reaction system (1).

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