A high-moisture sodium salt waste liquid evaporation concentration incineration treatment system

Abstract

The present application relates to a kind of high moisture sodium salt waste liquid evaporation concentration incineration processing system, including evaporation concentration unit, and dilute waste liquid is evaporated and concentrated by three-effect circulating evaporation concentration mechanism, two-effect circulating evaporation concentration mechanism and one-effect circulating evaporation concentration mechanism in evaporation concentration unit, and concentrated waste liquid A and secondary steam are obtained;Aluminum hydroxide adding unit mixes and stirs aluminum hydroxide powder with concentrated waste liquid A, and obtains thick slurry waste liquid;Incineration unit is incinerated by incinerator to thick slurry waste liquid, and incinerator is connected with auxiliary combustion chamber, waste heat boiler, cloth bag dust collector, activated carbon adsorber, induced draft fan and chimney in turn;Primary steam unit includes steam drum, and steam drum sends primary steam into one-effect circulating evaporation concentration mechanism and condensate preheater.This system carries out comprehensive utilization to evaporation concentration, chemical method and incineration, removes sodium ion in the form of sodium metaaluminate dust, guarantees long-term efficient operation of incineration system, realizes useful material resource, and has advantages such as energy saving and environmental protection in comprehensive treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental protection treatment of organic waste liquid, and particularly relates to a high-moisture sodium salt waste liquid evaporation concentration incineration treatment system. BACKGROUND

[0002] In many industries of the national economy, such as the metallurgical industry, the chemical industry, the electroplating industry, the paint production industry, the papermaking industry and the like, a large amount of industrial sodium salt waste liquid is generated in the production process. In addition to containing toxic and harmful substances, the waste liquid also contains combustible components, wherein the toxic and harmful substances include phenol, cyanide, ammonium acetate, ammonium nitrate, sodium acetate, sodium nitrate, heavy metals and the like, and the components are complex and difficult to solve. Therefore, if the waste liquid is directly discharged, not only will it cause environmental pollution, destroy the ecological balance and pose potential harm to human health, but also will result in waste of combustible energy. Under the concern of the whole society for green production and sustainable development of environmental protection, the harm of sodium salt-containing wastewater to the natural environment is increasingly obvious, and the solution of sodium salt-containing wastewater has become a phenomenon that must be actively faced and cannot be avoided in the industry.

[0003] At present, the main solution for the discharge of industrial sodium salt waste liquid is to comprehensively utilize membrane technology, biochemical technology, oxidation technology and the like. However, these traditional treatment methods not only have high investment, large occupied area and high operation cost, but also have some odors that cause air pollution and are difficult to achieve the desired cleaning effect. In particular, high-moisture sodium salt waste liquid is difficult to effectively treat.

[0004] It should be noted that the above content belongs to the technical cognition range of the inventor and does not necessarily constitute the prior art. SUMMARY

[0005] The present application aims to solve the problems existing in the prior art and provides a high-moisture sodium salt waste liquid evaporation concentration incineration treatment system. The evaporation concentration, chemical method and incineration are comprehensively utilized to remove sodium ions in the form of sodium metaaluminate dust, ensure long-term and efficient operation of the incineration system, realize resourceization of useful substances, and have the advantages of energy saving and environmental protection in comprehensive treatment.

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

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

[0008] An 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 second-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, and wherein the single-effect circulation evaporation and concentration mechanism is connected to a primary steam unit;

[0009] An 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 a concentrated slurry waste liquid;

[0010] The incineration unit includes a concentrated waste liquid delivery pump, which 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 an upper flue. The auxiliary combustion chamber is connected to the waste heat boiler through a lower flue. The waste heat boiler is connected to a bag filter, an activated carbon adsorber, an induced draft fan and a chimney in sequence. A soot blower is provided on the side wall of the waste heat boiler.

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

[0012] The three-effect circulation evaporation and concentration mechanism includes a three-effect heater, a three-effect separator and a three-effect circulation pump, 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 and concentration mechanism includes a two-effect heater, a two-effect separator and a two-effect circulation pump, 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 and concentration mechanism includes 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 and the first-effect heater through circulation pipeline A; the three-effect circulation pump is connected to the circulation pipeline B through the concentrated waste liquid pipeline C, the second-effect circulation pump is connected to the circulation pipeline A through the concentrated waste liquid pipeline B, and the first-effect circulation pump is connected to the discharge pump through the 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 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.

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

[0016] The stirring mechanism includes a motor base arranged at the upper end of the concentrated waste liquid storage tank, the motor base is provided with a stirring motor, the stirring motor is connected to a rotating 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 evaporation concentration unit, realize to high moisture sodium salt waste liquid evaporation concentration, the whole evaporation process is carried out in the closed tube and shell, through the tube of heater goes waste liquid, shell goes steam, not only realize heat exchange evaporation waste liquid, and good sealing, will not cause waste water pollution and odor diffusion;At the same time, the steam can continue to heat the next heater waste liquid, thereby saving energy, improve the thermal efficiency, effectively realize the reduction of waste liquid;(2) by adding aluminum hydroxide powder in waste liquid, sodium salt and aluminum hydroxide powder reaction in subsequent incineration get sodium metaaluminate, because sodium metaaluminate melting point is 1650 ℃, and the incineration temperature in the incinerator is 1100 ℃-1150 ℃, therefore, sodium metaaluminate in the incineration unit will not be in molten state, but in the form of dust, and then in the subsequent treatment can be collected in time from the dust-like sodium metaaluminate and recycling, fundamentally solve the existing incineration system due to sodium salt product sodium sulfate, sodium carbonate melting and coking caused by incinerator blockage and sticking to the water wall of waste heat boiler caused by heat exchange efficiency problem, ensure the stable and efficient operation of the incinerator and waste heat boiler. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 for the structure diagram of the high moisture sodium salt waste liquid evaporation concentration incineration treatment system of the present application;

[0020] Figure 2 for the structure diagram of the evaporation concentration unit of the present application;

[0021] Figure 3 for the structure diagram of the stirring mechanism of the present application;

[0022] In the figure, 1. dilute waste liquid delivery pump, 2. condensate preheater, 3. three-effect circulating evaporation and 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 circulating evaporation and 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 circulating evaporation and 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 Aluminum storage tank, 12. Stirring mechanism, 1201. Motor base, 1202. Stirring motor, 1203. Stirring shaft, 1204. Stirring paddle, 13. Concentrated waste liquid transfer 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 transfer 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 scope of protection 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 referred to each other. Each embodiment focuses on the differences from other embodiments.

[0026] Furthermore, the terms “upper end”, “lower end”, etc. 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 expressly specified or limited, terms such as "provided with," "disposed," and "connected" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integrated connections; mechanical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

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

[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. The three-effect circulation evaporation mechanism 3 separates secondary steam C and concentrated waste liquid C. The secondary steam C is connected to an indirect condenser 4, a condensate storage tank 5, and a non-condensable gas burner 6 in sequence. The concentrated waste liquid C is sent to a two-effect circulation evaporation and concentration mechanism 7. The two-effect circulation evaporation and concentration mechanism 7 separates secondary steam B and concentrated waste liquid B. The secondary steam B is sent to 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. When the waste liquid is continuously circulated, evaporated, and concentrated to reach a set concentration, concentrated waste liquid C can be obtained). The concentrated waste liquid B is sent to the The first-effect circulation 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 circulation 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 circulation evaporation and concentration mechanism 7. When the waste liquid is continuously circulated, evaporated and concentrated to reach a set concentration, concentrated waste liquid B can be obtained). The first-effect circulation evaporation and concentration mechanism 8 is connected to the primary steam unit. By designing the evaporation and concentration unit, the high-moisture 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 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] An aluminum hydroxide addition unit includes a discharge pump 9, which transports concentrated waste liquid A to a concentrated waste liquid storage tank 10. The concentrated waste liquid storage tank 10 is provided with a stirring mechanism 12. The concentrated waste liquid storage tank 10 is connected to an aluminum hydroxide storage tank 11. 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 the 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 the upper flue 15. The auxiliary combustion chamber 16 is connected to the waste heat boiler 18 through the lower flue 17. The waste heat boiler 18 is connected to the bag dust collector 19, the activated carbon adsorber 20, the induced draft fan 21 and the chimney 22 in sequence. The side wall of the waste heat boiler 18 is provided with a soot blower 2 3 (In order to prevent sodium metaaluminate dust from adhering to the tube wall and scaling to affect heat transfer, a soot blower 23 is provided to blow off the small particles of sodium metaaluminate powder 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 metaaluminate. Since the melting point of sodium metaaluminate is 1650°C, and the incineration temperature in the incinerator 14 is 1100°C to 1150°C, the sodium metaaluminate will not be in a molten state in the incineration unit, but will exist in the form of dust, which can be removed in the subsequent treatment. The dusty sodium aluminate is promptly discharged, collected and reused, which fundamentally solves the problem of the existing incineration system being blocked and stopped by 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 ° C. Therefore, 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 event of a fire, the molten sodium salt product accumulates on the inner wall of the incinerator, causing large chunks of molten ash to fall to the bottom of the incinerator during production, resulting in blockage of the incinerator and requiring shutdown for slag removal and maintenance. As the high-temperature flue gas enters the waste heat boiler, the molten sodium salt product cools and agglomerates on the water-cooled walls, seriously affecting the heat exchange efficiency of the waste heat boiler and making it difficult to clean. This ultimately renders the incinerator and waste heat boiler inoperable, requiring repair or replacement of related components. This ensures the stable and efficient operation of the incinerator 14 and waste heat boiler 18. The sodium salt wastewater generated in actual production typically contains ammonium nitrate, sodium nitrate, ammonium acetate, and sodium acetate.

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

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

[0034] Sodium nitrate decomposes into sodium oxide, nitrogen and oxygen at high temperature in the incinerator 14; the sodium oxide then reacts with aluminum hydroxide to produce sodium metaaluminate and water. 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 steam drum 24 connected with the waste heat boiler 18, which sends the primary steam into the three-effect circulating evaporation concentration mechanism 3, the condensate preheater 2 and the boiler deaerator water tank 26 in sequence through the steam pipeline 25. The steam drum 24 produces saturated steam, which is recycled to not only provide the evaporation heat source for the primary heater, but also preheat the dilute waste liquid, thereby achieving good energy-saving effect.

[0038] The three-effect circulating evaporation concentration mechanism 3 includes a three-effect heater 301, a three-effect separator 303 and a three-effect circulating pump 305, the three-effect heater 301 is connected with the three-effect separator 303 through the pipeline C 302, the three-effect circulating pump 305 connects the three-effect separator 303 with the three-effect heater 301 through the circulating pipeline C 304, the two-effect circulating evaporation concentration mechanism 7 includes a two-effect heater 701, a two-effect separator 703 and a two-effect circulating pump 705, the two-effect heater 701 is connected with the two-effect separator 703 through the pipeline B 702, the two-effect circulating pump 705 connects the two-effect separator 703 with the two-effect heater 701 through the circulating pipeline B 704, the one-effect circulating evaporation concentration mechanism 8 includes a one-effect heater 801, a one-effect separator 803 and a one-effect circulating pump 805, the one-effect heater 801 is connected with the one-effect separator 803 through the pipeline A 802, the one-effect circulating pump 805 connects the one-effect separator 803 with the one-effect heater 801 through the circulating pipeline A 804; the three-effect circulating pump 305 is connected with the circulating pipeline B 704 through the concentrated waste liquid pipeline C 27 (the concentrated waste liquid C is poured into the circulating pipeline B 704), the two-effect circulating pump 705 is connected with the circulating pipeline A 804 through the concentrated waste liquid pipeline B 28 (the concentrated waste liquid B is poured into the circulating pipeline A 804), the one-effect circulating pump 805 is connected with the discharge pump 9 through the concentrated waste liquid pipeline A 29; the primary steam is sent into the one-effect heater 801 to provide the evaporation heat source, the secondary steam A is sent into the two-effect heater 701 to provide the evaporation heat source, and the secondary steam B is sent into the three-effect heater 301 to provide the evaporation heat source. The evaporation process is in a closed tube and shell (the structure of the heater), the tube goes through the waste liquid, and the shell goes through the steam, so that the indirect heat exchange not only does not cause the pollution of the waste water and the diffusion of the odor in the open environment, but also enables the steam to continue to enter the next heater to heat the waste liquid after absorbing part of the heat, thereby saving the energy, improving the heat efficiency and effectively realizing the reduction of the 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 provided on the side wall of the incinerator 14 at intervals along the circumferential direction. The waste liquid spray guns 31 are respectively connected to the concentrated slurry waste liquid and compressed air 34. The compressed air 34 atomizes the concentrated slurry waste liquid and sprays it into the incinerator 14. The feeding method is that the concentrated slurry waste liquid is sprayed into the furnace of the incinerator 14 through the waste liquid spray guns 31. The shape of the spray can be fan-shaped or columnar according to the situation. According to the amount of waste liquid, 1-8 concentrated slurry waste liquid spray guns 31 are set 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 degrees. In this way, 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 reactants 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 a 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. The motor base 1201 is provided with a stirring motor 1202. The stirring motor 1202 is connected to a rotatable stirring shaft 1203. The stirring shaft 1203 is provided with a stirring paddle 1204. The specific structure of the stirring mechanism 12 is given to achieve thorough mixing of the 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 replacement, improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0044] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A high-moisture sodium salt waste liquid evaporation, concentration and incineration treatment system, characterized in that: include: An 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 second-effect circulation evaporation and concentration mechanism to heat and evaporate the circulating waste liquid, and wherein the single-effect circulation evaporation and concentration mechanism is connected to a primary steam unit; An 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 a concentrated slurry waste liquid; The incineration unit includes a concentrated waste liquid delivery pump, which 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 an upper flue. The auxiliary combustion chamber is connected to the waste heat boiler through a lower flue. The waste heat boiler is connected to a bag filter, an activated carbon adsorber, an induced draft fan and a chimney in sequence. A soot blower is provided on the side wall of the waste heat boiler. The incineration temperature in the incinerator is 1100°C to 1150°C. The primary steam unit includes a steam drum connected to the waste heat boiler, which sequentially sends the primary steam through a steam pipeline to a first-effect cycle evaporation and concentration mechanism, a condensate preheater and a boiler deaerator water tank.

2. The high-moisture sodium salt waste liquid evaporation, concentration and incineration treatment system according to claim 1, characterized in that: The three-effect circulation evaporation and concentration mechanism includes a three-effect heater, a three-effect separator and a three-effect circulation pump, 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 and concentration mechanism includes a two-effect heater, a two-effect separator and a two-effect circulation pump, 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 and concentration mechanism includes 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 and the first-effect heater through circulation pipeline A; the three-effect circulation pump is connected to the circulation pipeline B through the concentrated waste liquid pipeline C, the second-effect circulation pump is connected to the circulation pipeline A through the concentrated waste liquid pipeline B, and the first-effect circulation pump is connected to the discharge pump through the 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 and 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. The high-moisture sodium salt waste liquid evaporation, concentration and 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 and incineration treatment system according to claim 4, characterized in that: A natural gas burner is provided on the side wall of the incinerator below the waste liquid spray gun, and the non-condensable gas burner is provided on the side wall of the incinerator above the waste liquid spray gun.

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

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