Evaporation, concentration and incineration treatment system for high-moisture sodium salt waste liquid

Abstract

The invention relates to a high-moisture sodium salt waste liquid evaporation, concentration and incineration treatment system which comprises an evaporation and concentration unit, and the evaporation and concentration unit conducts evaporation and concentration on dilute waste liquid through a triple-effect circulation evaporation and concentration mechanism, a double-effect circulation evaporation and concentration mechanism and a single-effect circulation evaporation and concentration mechanism to obtain concentrated waste liquid A and secondary steam; the aluminum hydroxide adding unit is used for mixing and stirring aluminum hydroxide powder and concentrated waste liquid A to obtain thick slurry waste liquid; the incineration unit incinerates thick slurry waste liquid through an incinerator, and the incinerator is sequentially connected with an auxiliary combustion chamber, a waste heat boiler, a bag-type dust collector, an activated carbon adsorber, an induced draft fan and a chimney. The primary steam unit comprises a steam pocket; the steam pocket is used for feeding primary steam into the first-effect circulating evaporation and concentration mechanism and the condensate water preheater; according to the system, evaporation concentration, a chemical method and incineration are comprehensively utilized, sodium ions are removed in the form of sodium metaaluminate dust, long-term efficient operation of the incineration system is guaranteed, useful substance recycling is achieved, comprehensive treatment is more energy-saving and environment-friendly, and the like.

Description

Technical field:

[0001] The invention relates to the technical field of environmentally friendly treatment of organic waste liquid, and in particular to an evaporation, concentration and incineration treatment system for high-moisture sodium salt waste liquid. Background technology:

[0002] In many industries of the national economy, such as the metallurgical industry, chemical industry, electroplating industry, coating production industry, papermaking industry, etc., a large amount of industrial sodium salt waste liquid is generated during the production process. In addition to toxic and harmful substances, these waste liquids also contain combustible components, including phenol, cyanide, ammonium acetate, ammonium nitrate, sodium acetate, sodium nitrate, heavy metals, etc. The components are complicated and difficult to solve. Therefore, if they are directly discharged, it will not only cause environmental pollution, destroy the ecological balance, and have potential harm to human health, but also lead to the waste of combustible energy. With the concern of the whole society for green production and sustainable development of environmental protection, the harm of sodium salt wastewater to the natural environment is becoming increasingly obvious. The solution of sodium salt wastewater has become a phenomenon that must be actively faced and cannot be avoided in the industry.

[0003] At present, the solution to the discharge of industrial sodium salt waste liquid is mainly through the comprehensive utilization of membrane technology, biochemical, oxidation and other technologies. However, these traditional treatment methods not only have high investment, but also occupy a large area, have high operating costs, and even have some odor that causes air pollution, making it difficult to achieve the desired cleaning effect, especially high-moisture sodium salt waste liquid is difficult to effectively treat.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention:

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide a high-moisture sodium salt waste liquid evaporation concentration incineration treatment system, which comprehensively utilizes evaporation concentration, chemical methods and incineration to remove sodium ions in the form of sodium aluminate dust, thereby ensuring the long-term and efficient operation of the incineration system, realizing the resource utilization of useful substances, and having the advantages of more energy-saving and environmentally friendly comprehensive treatment.

[0006] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0007] A high-moisture sodium salt waste liquid evaporation, concentration and incineration treatment system, comprising:

[0008] The evaporation and concentration unit comprises a dilute waste liquid delivery pump, wherein the dilute waste liquid delivery pump preheats the dilute waste liquid in a condensate preheater and then delivers it to a three-effect circulation evaporation and concentration mechanism, wherein the three-effect circulation evaporation mechanism separates secondary steam C and concentrated waste liquid C, wherein the secondary steam C is sequentially connected to an indirect condenser, a condensate storage tank and a non-condensable gas burner, wherein the concentrated waste liquid C is delivered to a two-effect circulation evaporation and concentration mechanism, wherein the two-effect circulation evaporation and concentration mechanism separates secondary steam B and concentrated waste liquid B, wherein the secondary steam B is delivered to the three-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, wherein the concentrated waste liquid B is delivered to a single-effect circulation evaporation and concentration mechanism, wherein the single-effect circulation evaporation and concentration mechanism separates secondary steam A and concentrated waste liquid A, wherein the secondary steam A is delivered to the two-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, wherein the single-effect circulation evaporation and concentration mechanism is connected to a primary steam unit;

[0009] The aluminum hydroxide addition unit includes a discharge pump, which transports concentrated waste liquid A to a concentrated slurry waste liquid storage tank. The concentrated slurry waste liquid storage tank is provided with a stirring mechanism. The concentrated slurry waste liquid storage tank is connected to the aluminum hydroxide storage tank. The aluminum hydroxide powder in the aluminum hydroxide storage tank is mixed and stirred with the concentrated waste liquid A to obtain concentrated slurry waste liquid;

[0010] The incineration unit comprises a concentrated waste liquid delivery pump, wherein the concentrated waste liquid delivery pump delivers the concentrated waste liquid into the incinerator after atomization, the non-condensable gas burner is arranged on the side wall of the incinerator, the upper end of the incinerator is connected to the auxiliary combustion chamber through the upper flue, the auxiliary combustion chamber is connected to the waste heat boiler through the lower flue, the waste heat boiler is connected to the bag filter, the activated carbon adsorber, the induced draft fan and the chimney in sequence, and a soot blower is arranged on the side wall of the waste heat boiler;

[0011] The primary steam unit comprises a steam drum connected to the waste heat boiler, wherein the steam drum sequentially sends the primary steam to the first-effect circulation evaporation concentration mechanism, the condensate preheater and the boiler deaerator water tank through the steam pipeline.

[0012] The three-effect circulation evaporation concentration mechanism comprises a three-effect heater, a three-effect separator and a three-effect circulation pump, wherein the three-effect heater is connected to the three-effect separator through a pipeline C, and the three-effect circulation pump connects the three-effect separator to the three-effect heater through a circulation pipeline C. The two-effect circulation evaporation concentration mechanism comprises a two-effect heater, a two-effect separator and a two-effect circulation pump, wherein the two-effect heater is connected to the two-effect separator through a pipeline B, and the two-effect circulation pump connects the two-effect separator to the two-effect heater through a circulation pipeline B. The one-effect circulation evaporation concentration mechanism comprises a one-effect heater, a one-effect separator and A first-effect circulation pump, the first-effect heater is connected to the first-effect separator through pipeline A, and the first-effect circulation pump connects the first-effect separator to the first-effect heater through circulation pipeline A; the three-effect circulation pump is connected to the circulation pipeline B through concentrated waste liquid pipeline C, the second-effect circulation pump is connected to the circulation pipeline A through concentrated waste liquid pipeline B, and the first-effect circulation pump is connected to the discharge pump through concentrated waste liquid pipeline A; the primary steam is sent to the first-effect heater to provide an evaporation heat source, the secondary steam A is sent to the second-effect heater to provide an evaporation heat source, and the secondary steam B is sent to the triple-effect heater to provide an evaporation heat source.

[0013] The condensed water storage tank is connected to a condensed water delivery pump, and the condensed water delivery pump outputs the condensed water for reuse.

[0014] A plurality of waste liquid spray guns are arranged at intervals along the circumferential direction on the side wall of the incinerator, and the waste liquid spray guns are respectively connected to the concentrated slurry waste liquid and compressed air, and the compressed air atomizes the concentrated slurry waste liquid and sprays it into the incinerator.

[0015] A natural gas burner is arranged on the side wall of the incinerator below the waste liquid spray gun, and the non-condensable gas burner is arranged on the side wall of the incinerator above the waste liquid spray gun.

[0016] The stirring mechanism comprises a motor seat arranged at the upper end of the concentrated waste liquid storage tank, the motor seat is provided with a stirring motor, the stirring motor is connected to a rotatably arranged stirring shaft, and the stirring shaft is provided with a stirring paddle.

[0017] The present invention adopts the above structure, which can bring the following beneficial effects:

[0018] (1) By designing an evaporation and concentration unit, high-water sodium salt waste liquid can be evaporated and concentrated. The entire evaporation process is carried out in a closed tube side and shell side. The waste liquid passes through the tube side of the heater and the steam passes through the shell side. Not only can heat exchange and evaporate the waste liquid, but also the sealing is good, which will not cause wastewater pollution and odor diffusion; at the same time, the steam can continue to heat the waste liquid for the next heater, thereby saving energy, improving thermal efficiency, and effectively reducing the amount of waste liquid; (2) By adding aluminum hydroxide powder to the waste liquid, the sodium salt reacts with the aluminum hydroxide powder in the subsequent incineration to obtain Sodium aluminate, because the melting point of sodium aluminate is 1650℃, and the incineration temperature in the incinerator is 1100℃~1150℃, sodium aluminate will not be in a molten state in the incineration unit, but will exist in the form of dust. Therefore, in the subsequent treatment, the dusty sodium aluminate can be discharged, collected and reused in time, which fundamentally solves the problem of incinerator blockage and shutdown caused by melting and coking of sodium salt products sodium sulfate and sodium carbonate in the existing incineration system, and adhesion to the water-cooled wall of the waste heat boiler, resulting in reduced heat exchange efficiency, ensuring stable and efficient operation of the incinerator and the waste heat boiler. Description of the drawings:

[0019] Figure 1 It is a structural schematic diagram of the evaporation, concentration and incineration treatment system of high-moisture sodium salt waste liquid of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the evaporation concentration unit of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the stirring mechanism of the present invention;

[0022] In the figure, 1. dilute waste liquid delivery pump, 2. condensate preheater, 3. three-effect circulation evaporation concentration mechanism, 301. three-effect heater, 302. pipeline C, 303. three-effect separator, 304. circulation pipeline C, 305. three-effect circulation pump, 4. indirect condenser, 5. condensate storage tank, 6. non-condensable gas burner, 7. two-effect circulation evaporation concentration mechanism, 701. two-effect heater, 702. pipeline B, 703. two-effect separator, 704. circulation pipeline B, 705. two-effect circulation pump, 8. one-effect circulation evaporation concentration mechanism, 801. one-effect heater, 802. pipeline A, 803. one-effect separator, 804. circulation pipeline A, 805. one-effect circulation pump, 9. discharge pump, 10. thick slurry waste liquid storage tank, 11. hydrogen and oxygen Aluminium storage tank, 12. Stirring mechanism, 1201. Motor seat, 1202. Stirring motor, 1203. Stirring shaft, 1204. Stirring paddle, 13. Concentrated waste liquid delivery pump, 14. Incinerator, 15. Upper flue, 16. Auxiliary combustion chamber, 17. Lower flue, 18. Waste heat boiler, 19. Bag filter, 20. Activated carbon adsorber, 21. Induced draft fan, 22. Chimney, 23. Soot blower, 24. Steam drum, 25. Steam pipeline, 26. Boiler deaerator water tank, 27. Concentrated waste liquid pipeline C, 28. Concentrated waste liquid pipeline B, 29. Concentrated waste liquid pipeline A, 30. Condensate delivery pump, 31. Waste liquid spray gun, 32. Natural gas burner, 33. Dilute waste liquid storage tank, 34. Compressed air, 35. Condensate reuse. Specific implementation method:

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0026] Furthermore, the terms "upper end", "lower end" and the like are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the position of the indicated technical features.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected" and the like 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; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1-3 As shown, a high-moisture sodium salt waste liquid evaporation concentration incineration treatment system comprises:

[0029] The evaporation and concentration unit includes a dilute waste liquid delivery pump 1, which preheats the dilute waste liquid (i.e., high-water sodium salt waste liquid, which can be stored in a dilute waste liquid storage tank 33 in actual application) through a condensate preheater 2 and then sends it into a three-effect circulation evaporation and concentration mechanism 3, wherein the three-effect circulation evaporation mechanism 3 separates secondary steam C and concentrated waste liquid C, wherein the secondary steam C is sequentially connected to an indirect condenser 4, a condensate storage tank 5, and a non-condensable gas burner 6, wherein the concentrated waste liquid C is sent into a two-effect circulation evaporation and concentration mechanism 7, wherein the two-effect circulation evaporation and concentration mechanism 7 separates secondary steam B and concentrated waste liquid B, wherein the secondary steam B is sent into the three-effect circulation evaporation and concentration mechanism 3 to heat and evaporate the circulating waste liquid (the circulating waste liquid here refers to the waste liquid circulating in the three-effect circulation evaporation and concentration mechanism 3, and when the waste liquid is continuously circulated, evaporated, and concentrated to reach a set concentration, the concentrated waste liquid C can be obtained), and the concentrated waste liquid B is sent to the The first-effect circulating evaporation and concentration mechanism 8 is used to separate the secondary steam A and the concentrated waste liquid A. The secondary steam A is sent to the second-effect circulating evaporation and concentration mechanism 7 to heat and evaporate the circulating waste liquid (the circulating waste liquid here refers to the waste liquid circulating in the second-effect circulating evaporation and concentration mechanism 7. When the waste liquid is continuously circulated, evaporated and concentrated to reach the set concentration, the concentrated waste liquid B can be obtained). The first-effect circulating evaporation and concentration mechanism 8 is connected to the primary steam unit; by designing the evaporation and concentration unit, the high-water sodium salt waste liquid is evaporated and concentrated. The whole evaporation process is carried out in a closed tube side and shell side. The waste liquid is transported through the tube side of the heater and the steam is transported through the shell side. Not only heat exchange evaporation of the waste liquid is achieved, but also good sealing performance is achieved, and wastewater pollution and odor diffusion will not be caused; at the same time, the steam can continue to heat the waste liquid for the next heater, thereby saving energy, improving thermal efficiency, and effectively reducing the amount of waste liquid;

[0030] The aluminum hydroxide addition unit includes a discharge pump 9, wherein the discharge pump 9 transports the concentrated waste liquid A to a concentrated waste liquid storage tank 10, wherein the concentrated waste liquid storage tank 10 is provided with a stirring mechanism 12, wherein the concentrated waste liquid storage tank 10 is connected to an aluminum hydroxide storage tank 11, and the aluminum hydroxide powder in the aluminum hydroxide storage tank 11 is mixed and stirred with the concentrated waste liquid A in the concentrated waste liquid storage tank to obtain a concentrated waste liquid;

[0031] The incineration unit includes a concentrated waste liquid delivery pump 13, which delivers the concentrated waste liquid into an incinerator 14 after atomization. The non-condensable gas burner 6 is arranged on the side wall of the incinerator 14. The upper end of the incinerator 14 is connected to the auxiliary combustion chamber 16 through an upper flue 15. The auxiliary combustion chamber 16 is connected to the waste heat boiler 18 through a lower flue 17. The waste heat boiler 18 is connected to a bag filter 19, an activated carbon adsorber 20, an induced draft fan 21 and a chimney 22 in sequence. A soot blower 2 is provided on the side wall of the waste heat boiler 18. 3 (in order to prevent sodium aluminate dust from adhering to the tube wall and scaling to affect heat transfer, a soot blower 23 is provided to blow off the sodium aluminate powdery small particles on the outer wall of the heat exchange tube); by adding aluminum hydroxide powder to the waste liquid, sodium salt reacts with aluminum hydroxide powder in the subsequent incineration to obtain sodium aluminate. Since the melting point of sodium aluminate is 1650°C, and the incineration temperature in the incinerator 14 is 1100°C to 1150°C, the sodium aluminate will not be in a molten state in the incineration unit, but will exist in the form of dust, and can be removed in the subsequent treatment. The dusty sodium aluminate is discharged and collected for reuse in time, which fundamentally solves the problem of the existing incineration system being blocked and stopped due to the melting and coking of sodium salt products sodium sulfate and sodium carbonate, and the problem of reduced heat exchange efficiency caused by adhesion to the water-cooled wall of the waste heat boiler (the existing incinerator system directly incinerates the sodium salt waste liquid at high temperature. The main reaction products of sodium salt are sodium sulfate and sodium carbonate, and the melting point of these products is lower than 1100℃, so they are in a molten state in the incinerator, and as the flue gas enters the waste heat boiler, the molten state will cause adhesion and coking. In the case of coke, the sodium salt products in the molten state on the inner wall of the incinerator accumulate more and more, and large pieces of molten ash will fall to the bottom of the incinerator during production, which will cause the incinerator to be blocked and the furnace can only be stopped for slag removal and maintenance; as the high-temperature flue gas enters the waste heat boiler, the molten sodium salt products cool down on the water-cooled wall and adhere to the water-cooled wall, which seriously affects the heat exchange efficiency of the waste heat boiler and is difficult to clean, eventually causing the incinerator and waste heat boiler to be unable to operate, and only related parts can be repaired or replaced) to ensure the stable and efficient operation of the incinerator 14 and the waste heat boiler 18. The sodium salt waste liquid generated in actual production usually contains ammonium nitrate, sodium nitrate, ammonium acetate and sodium acetate.

[0032] Sodium acetate reacts with oxygen and aluminum hydroxide to produce sodium aluminate, carbon dioxide and water at a high temperature of 1150°C in an incinerator. The chemical equation is as follows:

[0033] CH3COONa+2O2+Al(OH)3→2CO2+3H2O+NaAlO2

[0034] Sodium nitrate is decomposed into sodium oxide, nitrogen and oxygen at high temperature in the incinerator 14; sodium oxide then reacts with aluminum hydroxide to produce sodium aluminate and water, and the chemical equation is as follows:

[0035] 4NaNO3→2Na2O+2N2+5O2

[0036] Na2O+2Al(OH)3→3H2O+2NaAlO2

[0037] The primary steam unit includes a drum 24 connected to the waste heat boiler 18, and the drum 24 sequentially sends the primary steam to the first-effect circulation evaporation concentration mechanism 3, the condensate preheater 2 and the boiler deaerator water tank 26 through the steam pipeline 25. The drum 24 produces saturated steam and recycles it, which can not only provide evaporation heat source for the first-effect heater, but also preheat the dilute waste liquid, achieving a good energy-saving effect.

[0038] The three-effect circulation evaporation concentration mechanism 3 includes a three-effect heater 301, a three-effect separator 303 and a three-effect circulation pump 305. The three-effect heater 301 is connected to the three-effect separator 303 through a pipeline C302, and the three-effect circulation pump 305 connects the three-effect separator 303 with the three-effect heater 301 through a circulation pipeline C304. The two-effect circulation evaporation concentration mechanism 7 includes a two-effect heater 701, a two-effect separator 703, and a two-effect circulation pump 705. The two-effect heater 701 is connected to the two-effect separator 703 through a pipeline B702, and the two-effect circulation pump 705 connects the two-effect separator 703 with the two-effect heater 701 through a circulation pipeline B704. The one-effect circulation evaporation concentration mechanism 8 includes a one-effect heater 801, a one-effect separator 803 and a one-effect circulation pump 805. The first-effect heater 801 is connected to the first-effect separator 803 through the pipeline A802, and the first-effect circulation pump 805 connects the first-effect separator 803 with the first-effect heater 801 through the circulation pipeline A804; the three-effect circulation pump 305 is connected to the circulation pipeline B704 through the concentrated waste liquid pipeline C27 (the concentrated waste liquid C is pumped into the circulation pipeline B704), the second-effect circulation pump 705 is connected to the circulation pipeline A804 through the concentrated waste liquid pipeline B28 (the concentrated waste liquid B is pumped into the circulation pipeline A804), and the first-effect circulation pump 805 is connected to the discharge pump 9 through the concentrated waste liquid pipeline A29; the primary steam is sent to the first-effect heater 801 to provide an evaporation heat source, the secondary steam A is sent to the second-effect heater 701 to provide an evaporation heat source, and the secondary steam B is sent to the triple-effect heater 301 to provide an evaporation heat source. The evaporation process is carried out in a closed tube side and shell side (heater structure), with waste liquid passing through the tube side and steam passing through the shell side. Compared with an open-air environment, this indirect heat exchange will not cause wastewater pollution and odor diffusion. At the same time, after absorbing part of the heat, the steam can continue to enter the next heater to continue heating the waste liquid, rather than directly releasing it into the atmosphere to cause a waste of resources, thereby saving energy, improving thermal efficiency, and effectively reducing the amount of waste liquid.

[0039] The condensed water storage tank 5 is connected to a condensed water delivery pump 30 , and the condensed water delivery pump 30 outputs the condensed water for reuse, that is, condensed water reuse 35 can be achieved.

[0040] A plurality of waste liquid spray guns 31 are arranged at intervals along the circumferential direction on the side wall of the incinerator 14. The waste liquid spray guns 31 are respectively connected to the concentrated slurry waste liquid and compressed air 34, and the compressed air 34 sprays the concentrated slurry waste liquid into the incinerator 14 in an atomized form. The feeding method is that the concentrated slurry waste liquid is sprayed into the furnace of the incinerator 14 through the waste liquid spray gun 31. The shape of the spray can be selected as a fan or a columnar shape according to the situation. According to the amount of waste liquid, 1-8 concentrated slurry waste liquid spray guns 31 are arranged in the middle and lower part of the furnace. They can also be arranged in layers according to the situation, divided into 1 layer, 2 layers or multiple layers, or staggered. The angle of the waste liquid spray gun 31 is set between 45-180°, so that the concentrated slurry waste liquid can be directly sprayed into the furnace in a mist manner to participate in the combustion reaction, the combustion surface area of ​​the reactant is increased, the combustion is sufficient, and the waste liquid burned in the lower layer can also heat up and ignite the waste liquid in the upper layer.

[0041] A natural gas burner 32 is provided on the side wall of the incinerator 14 below the waste liquid spray gun 31 , and the non-condensable gas burner 6 is provided on the side wall of the incinerator 14 above the waste liquid spray gun 31 .

[0042] The stirring mechanism 12 includes a motor base 1201 disposed at the upper end of the concentrated waste liquid storage tank 10, a stirring motor 1202 is disposed on the motor base 1201, the stirring motor 1202 is connected to a rotating stirring shaft 1203, and a stirring paddle 1204 is disposed on the stirring shaft 1203. The specific structure of the stirring mechanism 12 is given to achieve full mixing of aluminum hydroxide powder in the concentrated waste liquid.

[0043] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A high-moisture sodium salt waste liquid evaporation concentration incineration treatment system, characterized in that: include: The evaporation and concentration unit comprises a dilute waste liquid delivery pump, wherein the dilute waste liquid delivery pump preheats the dilute waste liquid in a condensate preheater and then delivers it to a three-effect circulation evaporation and concentration mechanism, wherein the three-effect circulation evaporation mechanism separates secondary steam C and concentrated waste liquid C, wherein the secondary steam C is sequentially connected to an indirect condenser, a condensate storage tank and a non-condensable gas burner, wherein the concentrated waste liquid C is delivered to a two-effect circulation evaporation and concentration mechanism, wherein the two-effect circulation evaporation and concentration mechanism separates secondary steam B and concentrated waste liquid B, wherein the secondary steam B is delivered to the three-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, wherein the concentrated waste liquid B is delivered to a single-effect circulation evaporation and concentration mechanism, wherein the single-effect circulation evaporation and concentration mechanism separates secondary steam A and concentrated waste liquid A, wherein the secondary steam A is delivered to the two-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, wherein the single-effect circulation evaporation and concentration mechanism is connected to a primary steam unit; The aluminum hydroxide addition unit includes a discharge pump, which transports concentrated waste liquid A to a concentrated slurry waste liquid storage tank. The concentrated slurry waste liquid storage tank is provided with a stirring mechanism. The concentrated slurry waste liquid storage tank is connected to the aluminum hydroxide storage tank. The aluminum hydroxide powder in the aluminum hydroxide storage tank is mixed and stirred with the concentrated waste liquid A to obtain concentrated slurry waste liquid; The incineration unit comprises a concentrated waste liquid delivery pump, wherein the concentrated waste liquid delivery pump delivers the concentrated waste liquid into the incinerator after atomization, the non-condensable gas burner is arranged on the side wall of the incinerator, the upper end of the incinerator is connected to the auxiliary combustion chamber through the upper flue, the auxiliary combustion chamber is connected to the waste heat boiler through the lower flue, the waste heat boiler is connected to the bag filter, the activated carbon adsorber, the induced draft fan and the chimney in sequence, and a soot blower is arranged on the side wall of the waste heat boiler; The primary steam unit comprises a steam drum connected to the waste heat boiler, wherein the steam drum sequentially sends the primary steam to the first-effect circulation evaporation concentration mechanism, the condensate preheater and the boiler deaerator water tank through the steam pipeline.

2. The high-moisture sodium salt waste liquid evaporation concentration incineration treatment system according to claim 1 is characterized in that: The three-effect circulation evaporation concentration mechanism comprises a three-effect heater, a three-effect separator and a three-effect circulation pump, wherein the three-effect heater is connected to the three-effect separator through a pipeline C, and the three-effect circulation pump connects the three-effect separator to the three-effect heater through a circulation pipeline C. The two-effect circulation evaporation concentration mechanism comprises a two-effect heater, a two-effect separator and a two-effect circulation pump, wherein the two-effect heater is connected to the two-effect separator through a pipeline B, and the two-effect circulation pump connects the two-effect separator to the two-effect heater through a circulation pipeline B. The one-effect circulation evaporation concentration mechanism comprises a one-effect heater, a one-effect separator and A first-effect circulation pump, the first-effect heater is connected to the first-effect separator through pipeline A, and the first-effect circulation pump connects the first-effect separator to the first-effect heater through circulation pipeline A; the three-effect circulation pump is connected to the circulation pipeline B through concentrated waste liquid pipeline C, the second-effect circulation pump is connected to the circulation pipeline A through concentrated waste liquid pipeline B, and the first-effect circulation pump is connected to the discharge pump through concentrated waste liquid pipeline A; the primary steam is sent to the first-effect heater to provide an evaporation heat source, the secondary steam A is sent to the second-effect heater to provide an evaporation heat source, and the secondary steam B is sent to the triple-effect heater to provide an evaporation heat source.

3. A high-moisture sodium salt waste liquid evaporation concentration incineration treatment system according to claim 1 or 2, characterized in that: The condensed water storage tank is connected to a condensed water delivery pump, and the condensed water delivery pump outputs the condensed water for reuse.

4. A high-moisture sodium salt waste liquid evaporation concentration incineration treatment system according to claim 3, characterized in that: A plurality of waste liquid spray guns are arranged on the side wall of the incinerator at intervals along the circumferential direction. The waste liquid spray guns are respectively connected to the concentrated slurry waste liquid and compressed air. The compressed air atomizes the concentrated slurry waste liquid and sprays it into the incinerator.

5. The high-moisture sodium salt waste liquid evaporation concentration incineration treatment system according to claim 4 is characterized in that: A natural gas burner is arranged on the side wall of the incinerator below the waste liquid spray gun, and the non-condensable gas burner is arranged on the side wall of the incinerator above the waste liquid spray gun.

6. The high-moisture sodium salt waste liquid evaporation concentration incineration treatment system according to claim 5, characterized in that: The stirring mechanism comprises a motor seat arranged at the upper end of the concentrated waste liquid storage tank, the motor seat is provided with a stirring motor, the stirring motor is connected to a rotatably arranged stirring shaft, and the stirring shaft is provided with a stirring paddle.

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