Organic waste liquid incineration treatment device and incineration treatment system

Abstract

The utility model discloses an organic waste liquid incineration treatment device and system, and belongs to the technical field of waste liquid treatment. The gas stripping device is provided with a first liquid inlet end, a first liquid outlet end, a first gas inlet end and a first gas outlet end, the first liquid inlet end is configured to introduce organic waste liquid, and the first gas inlet end is configured to introduce air; the heating device is provided with a second air inlet end and a second air outlet end, and the second air inlet end is communicated with the first air outlet end; the incineration device is provided with a second liquid inlet end, a third gas inlet end and a third gas outlet end, the second liquid inlet end is communicated with the first liquid outlet end, and the third gas inlet end is communicated with the second gas outlet end; the discharging device is provided with a fourth air inlet end and a fourth air outlet end, the fourth air inlet end is communicated with the third air outlet end, and the fourth air outlet end is communicated with the external atmosphere. Part of organic matters and water in the organic waste liquid are combined with air to enter the incineration device in a gas phase manner through the gas stripping device to participate in incineration, so that auxiliary fuel required to be consumed when the organic waste liquid is treated in the incineration device is reduced.

Description

Technical Field

[0001] This application belongs to the field of waste liquid treatment technology, specifically relating to an organic waste liquid incineration treatment device and incineration treatment system. Background Technology

[0002] The petrochemical industry generates large amounts of toxic and harmful organic waste gases and wastewater during production. Direct discharge of these waste gases and wastewater severely pollutes the environment and disrupts the ecological balance. Therefore, they need to be treated to meet environmental emission standards. Incineration is the most effective method to destroy the toxic and harmful components in waste gases and wastewater. However, for organic waste liquids with high water content, production facilities generate large amounts of acidic wastewater. Directly feeding this wastewater into an incinerator requires a large amount of auxiliary fuel, resulting in high system operating costs. Utility Model Content

[0003] To address the aforementioned issues, this application provides an organic waste liquid incineration treatment device and incineration treatment system, which reduces the auxiliary fuel required for treating organic waste liquid with high moisture content in the incinerator, thereby lowering the system operating cost.

[0004] This application provides an organic waste liquid incineration treatment device, including: an air stripping device having a first liquid inlet, a first liquid outlet, a first air inlet and a first air outlet, wherein the first liquid inlet is configured to introduce organic waste liquid and the first air inlet is configured to introduce air.

[0005] The heating device has a second air inlet and a second air outlet, the second air inlet being connected to the first air outlet.

[0006] The incineration device has a second liquid inlet, a third air inlet and a third air outlet, wherein the second liquid inlet is connected to the first liquid outlet and the third air inlet is connected to the second air outlet.

[0007] The emission device has a fourth air inlet and a fourth air outlet. The fourth air inlet is connected to the third air outlet, and the fourth air outlet is connected to the outside atmosphere.

[0008] In some embodiments, the heating device further has a fifth air inlet and a fifth air outlet, the fifth air outlet being connected to the fourth air inlet.

[0009] The processing device also includes:

[0010] The waste heat recovery device has a sixth air inlet and a sixth air outlet. The sixth air inlet is connected to the third air outlet, and the sixth air outlet is connected to the fifth air inlet.

[0011] In some embodiments, the airlift device includes:

[0012] heater;

[0013] A circulating pump has a first input end and a first output end, wherein the first input end is connected to the first liquid inlet end;

[0014] The gas stripping tower has a gas input end, a gas output end, a liquid input end, a first liquid output end, and a second liquid output end. The gas input end is connected to the first gas inlet end, the gas output end is connected to the first gas outlet end, the first output end is connected to the liquid input end via a heater, the first liquid output end is connected to the first input end, and the second liquid output end is connected to the first liquid outlet end.

[0015] In some embodiments, the heating device includes:

[0016] The first heat exchanger has a third input end, a third output end, a fourth input end, and a fourth output end. The third input end is connected to the second air inlet end, the third output end is connected to the second air outlet end, the fourth input end is connected to the fifth air inlet end, and the fourth output end is connected to the fifth air outlet end.

[0017] In some embodiments, the heating device includes a plurality of first heat exchangers connected in sequence, a third input end and a third output end between two adjacent first heat exchangers being connected to each other, and a fourth input end and a fourth output end being connected to each other, gas introduced at a fifth inlet end passing through the plurality of first heat exchangers in a first sequential direction to a fifth outlet end, and gas introduced at a second inlet end passing through the plurality of first heat exchangers in a second sequential direction to a second outlet end, wherein the first sequential direction is opposite to the second sequential direction.

[0018] In some embodiments, the heating device further includes:

[0019] The second heat exchanger has a second input terminal and a second output terminal. The second input terminal is connected to the second air inlet terminal, and the second output terminal is connected to the third input terminal.

[0020] In some embodiments, the incineration apparatus includes:

[0021] The burner includes a spray gun, which is connected to the third air intake.

[0022] The incinerator is connected to the spray gun. The incinerator has a fifth input end, a sixth input end and a fifth output end. The fifth input end is connected to the second liquid inlet end, the sixth input end is connected to the third air inlet end, and the fifth output end is connected to the third air outlet end.

[0023] In some embodiments, the emission device includes a flue gas purification device, an induced draft fan, and a chimney connected in sequence, with a fourth air inlet connected to the flue gas purification device and the chimney outlet configured as a fourth air outlet.

[0024] In some embodiments, the temperature of the gas in the first outlet is 50°C to 60°C.

[0025] In some embodiments, the temperature of the gas in the second outlet is 300°C to 400°C.

[0026] In some embodiments, the oxygen content of the gas in the first outlet is 16% to 21%.

[0027] Accordingly, this embodiment also proposes an incineration treatment system, including the organic waste liquid incineration treatment device in the above embodiment.

[0028] The beneficial effect of this application is that it provides an organic waste liquid incineration treatment device, the treatment device including: a gas stripping device, a heating device, an incineration device and an emission device. The gas stripping device has a first liquid inlet end, a first liquid outlet end, a first air inlet end and a first air outlet end. The first liquid inlet end is configured to introduce organic waste liquid, and the first air inlet end is configured to introduce air. The heating device has a second air inlet end and a second air outlet end, and the second air inlet end is connected to the first air outlet end. The incineration device has a second liquid inlet end, a third air inlet end and a third air outlet end, and the second liquid inlet end is connected to the first liquid outlet end and the third air inlet end is connected to the second air outlet end. The emission device has a fourth air inlet end and a fourth air outlet end, and the fourth air inlet end is connected to the third air outlet end and the fourth air outlet end is connected to the external atmosphere. This application uses an air stripping device to transfer some of the organic matter and water in the original organic waste liquid into the air, which then enters the incineration unit in a gas phase to participate in incineration. This reduces the amount of water in the organic waste liquid that needs to be treated. In addition, a heating device provides a certain amount of heat energy to the incineration unit, thereby reducing the auxiliary fuel required for the treatment of organic waste liquid with high water content in the incineration unit and lowering the system operating cost.

[0029] This application also provides an incineration treatment system, including the above-described organic waste liquid incineration treatment device. Therefore, this incineration treatment system can possess all the technical features and beneficial effects of the above-described organic waste liquid incineration treatment device, which will not be elaborated further here. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 An example block diagram of an organic waste liquid incineration treatment device provided in the embodiments of this application;

[0032] Figure 2 Example block diagram of another organic waste liquid incineration treatment device provided in the embodiments of this application;

[0033] Figure 3An example block diagram of another organic waste liquid incineration treatment device provided in the embodiments of this application.

[0034] Explanation of reference numerals in the attached drawings: 10. Air lifting device; 11. First liquid inlet; 12. First liquid outlet; 13. First air inlet; 14. First air outlet; 15. Heater; 16. Circulating pump; 161. First input end; 162. First output end; 17. Air lifting tower; 171. Gas input end; 172. Gas output end; 173. Liquid input end; 174. First liquid output end; 175. Second liquid output end; 20. Heating device; 21. Second air inlet; 22. Second air outlet; 23. Fifth air inlet; 24. Fifth air outlet; 25. Second heat exchanger; 251. Second input end; 252. Second output end; 26. First heat exchanger; 261. Third input terminal; 262. Third output terminal; 263. Fourth input terminal; 264. Fourth output terminal; 30. Incineration unit; 31. Second liquid inlet terminal; 32. Third air inlet terminal; 33. Third air outlet terminal; 34. Burner; 35. Incinerator; 351. Fifth input terminal; 352. Sixth input terminal; 353. Fifth output terminal; 40. Emission device; 41. Fourth air inlet terminal; 42. Fourth air outlet terminal; 43. Flue gas purification equipment; 44. Exhaust fan; 45. Chimney; 50. Waste heat recovery device; 51. Sixth air inlet terminal; 52. Sixth air outlet terminal; 60. Combustion fan; 70. Booster pump. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of this application, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the application. Terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] This application provides an organic waste liquid incineration treatment device and incineration treatment system, which are described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0038] As a preamble to the embodiments of this application, the petrochemical industry generates a large amount of toxic and harmful organic waste gas and wastewater during the production process. Direct discharge of these waste gases and wastewater will seriously pollute the environment and disrupt the ecological balance. Currently, with my country's increasingly stringent environmental protection requirements and continuous strengthening of environmental law enforcement, they must be treated to meet environmental emission standards. Incineration is the most effective treatment method to destroy the toxic and harmful components in waste gas and wastewater.

[0039] Incineration is a method for treating organic waste liquid / wastewater by oxidizing and decomposing organic matter at high temperatures, producing harmless substances such as water and carbon dioxide, which are then released into the atmosphere. The COD (Chemical Oxygen Demand) removal rate can reach over 99%. The combustion products are clean and can be directly discharged into the atmosphere, and the heat from the combustion products can be recovered through a waste heat boiler. Generally, incineration is considered more economical and reasonable than other methods for treating organic waste liquid with COD ≥ 100,000 mg / L, calorific value ≥ 2500 kcal / kg, or organic component mass fraction ≥ 10%. However, for organic waste liquid with high water content, such as in the isobutylene oxidation process for producing MMA (methyl methacrylate), the production unit generates a large amount of acidic wastewater with a water content of around 90%. Directly feeding this wastewater into an incinerator requires a large amount of auxiliary fuel, resulting in high system operating costs.

[0040] In view of this, this application proposes an organic waste liquid incineration treatment device, which aims to solve at least one of the above-mentioned technical problems.

[0041] Please see Figure 1 As shown, Figure 1 This is an example block diagram of an organic waste liquid incineration treatment device provided in an embodiment of this application. The organic waste liquid incineration treatment device proposed in this application includes: a gas stripping device 10, having a first liquid inlet 11, a first liquid outlet 12, a first air inlet 13, and a first air outlet 14, wherein the first liquid inlet 11 is configured to introduce organic waste liquid, and the first air inlet 13 is configured to introduce air; a heating device 20, having a second air inlet 21 and a second air outlet 22, wherein the second air inlet 21 is connected to the first air outlet 14; an incineration device 30, having a second liquid inlet 31, a third air inlet 32, and a third air outlet 33, wherein the second liquid inlet 31 is connected to the first liquid outlet 12, and the third air inlet 32 ​​is connected to the second air outlet 22; and a discharge device 40, having a fourth air inlet 41 and a fourth air outlet 42, wherein the fourth air inlet 41 is connected to the third air outlet 33, and the fourth air outlet 42 is connected to the external atmosphere.

[0042] It is important to understand that the gas stripping device 10 transfers some of the organic matter and water from the original organic waste liquid to the air via gas stripping, allowing it to enter the incineration device 30 in a gaseous phase for combustion. Specifically, based on the organic waste liquid introduced at the first liquid inlet 11 and the air introduced at the first air inlet 13, the gas stripping device 10 transfers some of the organic matter and water from the organic waste liquid to the air, which is then output from the first gas outlet 14 and transported to the incineration device 30 for combustion. This reduces the amount of liquid organic waste liquid to be treated. The remaining organic waste liquid is output from the first liquid outlet 12 to the incineration device 30 for combustion. The heating device 20 heats the gas output from the first gas outlet 14 of the gas stripping device 10 before it is transported to the incineration device 30 for combustion. The incineration device 30 provides a certain amount of heat energy, reducing fuel consumption and achieving energy conservation and environmental protection. The gas output from end 14 is input from the second inlet end 21, heated, and then output from the second outlet end 22 to the incineration device 30 for combustion. The incineration device 30 is used to incinerate organic waste liquid, so that the organic waste liquid oxidizes and decomposes organic matter under high temperature conditions to generate high-temperature flue gas for discharge. That is, the organic waste liquid output from the first outlet end 12 enters the incineration device 30 from the second inlet end 31 for combustion, and the gas output from the second outlet end 22 enters the incineration device 30 from the third inlet end 32 for combustion. The high-temperature flue gas generated after combustion is discharged from the third outlet end 33. The emission device 40 is used to treat the high-temperature flue gas discharged from the incineration device 30 and then discharge it into the outside atmosphere. That is, the high-temperature flue gas is discharged from the third outlet end 33 to the fourth inlet end 41, and the flue gas treated by the emission device 40 is discharged into the outside atmosphere from the fourth outlet end 42.

[0043] Through the above technical solution, the organic waste liquid incineration treatment device provided in this application embodiment transfers some organic matter and water in the original organic waste liquid to the air through the air stripping device 10, and enters the incineration device 30 in the gas phase to participate in incineration. Before incineration, the dilute waste liquid is concentrated, which reduces the amount of water in the organic waste liquid and reduces the cost of incineration treatment of organic waste liquid. In addition, the heating device 20 provides a certain amount of heat energy to the incineration device 30, thereby reducing the auxiliary fuel required for the treatment of organic waste liquid with high water content in the incineration device 30 and reducing the system operating cost.

[0044] Please see Figure 2 As shown, Figure 2 This is an example block diagram of another organic waste liquid incineration treatment device provided in an embodiment of this application. In some embodiments, the heating device 20 further has a fifth air inlet 23 and a fifth air outlet 24, the fifth air outlet 24 being connected to the fourth air inlet 41; the treatment device further includes: a waste heat recovery device 50, having a sixth air inlet 51 and a sixth air outlet 52, the sixth air inlet 51 being connected to the third air outlet 33, and the sixth air outlet 52 being connected to the fifth air inlet 23.

[0045] It should be understood that the waste heat recovery device 50 is used to recover the high-temperature flue gas discharged from the incineration device 30 in order to reduce heat loss. That is, the high-temperature flue gas generated after combustion is discharged from the third outlet 33 and enters the sixth inlet 51, then is discharged from the sixth outlet 52 to the fifth inlet 23 and enters the heating device 20, and then is discharged from the fifth outlet 24 to the emission device 40 and then discharged into the outside atmosphere. The heating device 20 uses the heat of the high-temperature flue gas discharged from the waste heat recovery device 50 to heat the gas input from the second inlet 21.

[0046] In some embodiments, the waste heat recovery device 50 may be a waste heat boiler. Specifically, the waste heat boiler may be a membrane wall large cavity boiler, a modular water tube boiler, a fire tube boiler, etc., with one end of the waste heat boiler connected to the incineration device 30 and the other end connected to the heating device 20.

[0047] In some embodiments, the heating device 20 may be a heat exchanger.

[0048] Through the above technical solution, this embodiment of the application uses a waste heat recovery device 50 to recover the high-temperature flue gas discharged from the incineration unit 30, thereby reducing heat loss. Furthermore, the heat from the high-temperature flue gas discharged from the incineration unit 30 is used to heat the gas discharged into the incineration unit 30 via the heating device 20. Through heat exchange, the recovered heat from the flue gas is transferred to the gas requiring heating, bringing it to the desired temperature. This achieves efficient energy utilization and heat recovery, reduces energy waste and environmental pollution, and improves energy efficiency.

[0049] Please see Figure 3 As shown, Figure 3 This is an example block diagram of another organic waste liquid incineration treatment device provided in an embodiment of this application. In some embodiments, the gas stripping device 10 includes: a heater 15; a circulating pump 16 having a first input end 161 and a first output end 162, the first input end 161 being connected to a first liquid inlet end 11; and a gas stripping tower 17 having a gas input end 171, a gas output end 172, a liquid input end 173, a first liquid output end 174, and a second liquid output end 175, the gas input end 171 being connected to a first air inlet end 13, the gas output end 172 being connected to a first air outlet end 14, the first output end 162 being connected to the liquid input end 173 via the heater 15, the first liquid output end 174 being connected to the first input end 161, and the second liquid output end 175 being connected to the first liquid outlet end 12.

[0050] It is important to understand that the organic waste liquid is fed into the first input terminal 161 of the circulating pump 16 via a pipeline. After being transported by the circulating pump 16, it is output from the first output terminal 162 to the heater 15 for heating, and then output to the stripping tower 17 via the liquid input terminal 173. The first liquid output terminal 174 is connected to the first input terminal 161, realizing the circulation of the organic waste liquid in the stripping tower 17. This stable circulation system ensures the continuity and stability of waste liquid treatment. The organic waste liquid entering from the first input terminal 161 of the circulating pump 16 mixes with the circulating liquid output from the stripping tower 17 before entering the circulating pump 16. The heater 15 heats the organic waste liquid, increasing the liquid input. The temperature of the organic waste liquid input at end 173 helps to achieve a more efficient mass and heat transfer and separation process in the stripping tower. Specifically, the stripping tower 17, based on the organic waste liquid introduced at the liquid input end 173 and the air introduced at the gas input end 171, transfers some of the organic matter and water in the organic waste liquid to the air, which is then output from the gas output end 172 and transported to the incineration unit 30 for incineration, reducing the amount of liquid organic waste liquid to be treated. The remaining organic waste liquid is output from the second liquid output end 175 to the incineration unit 30 for incineration. It should be noted that the air introduced at the gas input end 171 can enter the stripping tower 17 through the combustion fan 60. The organic waste liquid output from the second liquid output end 175 can be pressurized by the booster pump 70 and sent to the incineration unit 30 for incineration. It should be noted that the various devices in this application can be connected by pipelines.

[0051] In some embodiments, the gas stripping tower 17 has a spray structure inside, a packing layer inside the tower, and a demister at the top of the tower to perform gas-liquid separation on the gas outlet 172 at the top of the tower to prevent excessive moisture from entering the incineration unit 30 through the gas outlet 172 and adding auxiliary fuel to the incineration unit 30. Fresh air enters from the gas inlet 171 at the lower part of the stripping tower 17. After mixing with the waste liquid circulation liquid, the organic waste liquid enters the circulation pump 16. The waste liquid at the outlet of the circulation pump 16 is heated by the heater 15 and then sprayed into the stripping tower 17 through the spray nozzle above the packing layer via the liquid inlet 173. The fresh air brought in by the combustion fan 60 from the lower gas inlet 171 comes into full contact with the organic waste liquid in the tower for mass and heat transfer. The fresh air enters the tower and comes into full contact with the organic waste liquid, causing water and a small amount of volatile organic compounds to transfer to the gas phase. Finally, the fresh air carries some gas phase wastewater out from the gas outlet 172 at the top of the tower. The stable circulation system at the first liquid outlet 174 ensures the continuity and stability of waste liquid treatment. The waste liquid that is not stripped flows out from the second liquid outlet 175 at the bottom of the stripping tower 17.

[0052] In some embodiments, the heater 15 may be a heat exchanger, using steam or hot water as a heat source to supplement the heat required for the system's gas lift by heating the wastewater. Specifically, the hot side of the heater 15 uses hot water or steam as a heat source, and the cold side inlet is connected to the outlet of the circulating pump 16 via a pipeline, while the outlet is connected to the spray port of the gas lift tower 17.

[0053] In some embodiments, the gas temperature in the first outlet 14 is 50°C to 60°C. Specifically, the gas temperature in the gas output end 172 is 50°C to 60°C, which can be achieved by heating the organic waste liquid to 60°C to 70°C using the heater 15. The gas temperature in the first outlet 14 can be any value or a range between any two of the following: 50°C, 51°C, 52°C, 53°C, 54°C, 55°C, 56°C, 57°C, 58°C, 59°C, and 60°C. The specific design depends on the actual requirements of the solution, and this application does not limit this. It should be understood that the gas in the first outlet 14 includes air, water from the organic waste liquid, and some organic matter. To prevent excessively high temperatures and excessive evaporation of the organic waste liquid, which would result in excessively high organic matter content and affect the safety of mixed gas transportation, an LEL (Lower Explosive Limit) gas analyzer can be installed on the air pipeline after the first outlet 14 to detect and control the organic matter content in the mixed gas to within 25% of the lower explosive limit, ensuring the safety of mixed gas transportation.

[0054] In some embodiments, the oxygen content of the gas in the first outlet 14 is 16% to 21%. Specifically, the oxygen content of the gas in the gas outlet 172 is 16% to 21%, and the oxygen content of the gas in the first outlet 14 can be any value or a range between any two of 16%, 17%, 18%, 19%, 20%, and 21%, depending on the actual design requirements. This application does not limit this. In the incineration device 30, the fuel needs to be fully mixed and burned with oxygen in the air. Controlling the oxygen content within the range of 16% to 21% ensures that the fuel receives sufficient oxygen support, thereby achieving complete combustion. An appropriate oxygen content can maintain stable combustion of the flame in the incinerator and prevent flame extinction or excessive fluctuations.

[0055] In some embodiments, the heating device 20 includes: a first heat exchanger 26 having a third input terminal 261, a third output terminal 262, a fourth input terminal 263 and a fourth output terminal 264, wherein the third input terminal 261 is connected to the second air inlet terminal 21, the third output terminal 262 is connected to the second air outlet terminal 22, the fourth input terminal 263 is connected to the fifth air inlet terminal 23, and the fourth output terminal 264 is connected to the fifth air outlet terminal 24.

[0056] It should be understood that the third input terminal 261 and the third output terminal 262 of the first heat exchanger 26 are connected, and the fourth input terminal 263 and the fourth output terminal 264 are connected. The gas output from the first outlet terminal 14 is fed into the incineration device 30 through the third input terminal 261 and the third output terminal 262 to participate in combustion. The high-temperature flue gas discharged from the incineration device 30 is fed into the discharge device 40 through the fourth input terminal 263 and the fourth output terminal 264 and then discharged into the outside atmosphere. The heat of the high-temperature flue gas between the fourth input terminal 263 and the fourth output terminal 264 heats the gas between the third input terminal 261 and the third output terminal 262. Through heat exchange, the recovered flue gas heat is transferred to the gas that needs to be heated, so that it reaches the required temperature.

[0057] In some embodiments, the heating device 20 includes a plurality of first heat exchangers 26, which are connected in sequence. The third input terminal 261 and the third output terminal 262 between two adjacent first heat exchangers 26 are connected to each other, and the fourth input terminal 263 and the fourth output terminal 264 are connected to each other. Gas introduced by the fifth inlet terminal 23 passes through the plurality of first heat exchangers 26 in a first sequential direction to the fifth outlet terminal 24. Gas introduced by the second inlet terminal 21 passes through the plurality of first heat exchangers 26 in a second sequential direction to the second outlet terminal 22. The first sequential direction is opposite to the second sequential direction.

[0058] For example, the heating device 20 includes three first heat exchangers 26. The third input terminal 261 of the first heat exchanger 26 is connected to the second air inlet terminal 21, the third output terminal 262 of the first heat exchanger 26 is connected to the third input terminal 261 of the second heat exchanger 26, the third output terminal 262 of the second heat exchanger 26 is connected to the third input terminal 261 of the third heat exchanger 26, and the third output terminal 262 of the third heat exchanger 26 is connected to the second air outlet terminal 22. Furthermore, the fourth input terminal 263 of the first heat exchanger 26 is connected to the fifth air inlet terminal 23, the fourth output terminal 264 of the first heat exchanger 26 is connected to the fourth input terminal 263 of the second heat exchanger 26, and the fourth output terminal 264 of the second heat exchanger 26 is connected to the fifth air inlet terminal 23. The outlet 264 is connected to the fourth input 263 of the third first heat exchanger 26, and the fourth output 264 of the third first heat exchanger 26 is connected to the fifth outlet 24. The gas introduced through the second inlet 21 sequentially passes through the first first heat exchanger 26, the second first heat exchanger 26, and the third first heat exchanger 26 before reaching the second outlet 22. The gas introduced through the fifth inlet 23 sequentially passes through the third first heat exchanger 26, the second first heat exchanger 26, and the first first heat exchanger 26 before reaching the fifth outlet 24. Therefore, the first sequential direction is the first first heat exchanger 26, the second first heat exchanger 26, and the third first heat exchanger 26, and the second sequential direction is the third first heat exchanger 26, the second first heat exchanger 26, and the first first heat exchanger 26. And so on.

[0059] In some embodiments, the gas temperature in the second outlet 22 is 300°C to 400°C. That is, the gas temperature received by the incinerator 30 from the heating device 20 can be 300°C to 400°C, providing a certain heat source for the incinerator 30. Therefore, the heating device 20 needs to heat the gas transmitted from the first outlet 14 to 300°C to 400°C. Specifically, the heating device 20 needs to heat the gas transmitted from the first outlet 14 to any value or a range between any two of the following: 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, and 400°C. The specific design depends on the actual requirements of the solution, and this application does not limit this. Consequently, multiple stages of first heat exchangers 26 are needed to bring the target gas to the required temperature.

[0060] In some embodiments, the first heat exchanger 26 may be a tubular heat exchanger, a plate heat exchanger, or the like, and may have one to three or more stages. The flue gas inlet of the first heat exchanger 26 is connected to an upstream waste heat boiler, and the flue gas outlet is connected to a downstream emission device 40. One end of the air side is connected to the first air outlet 14, and the other end is connected to the incineration device 30, providing combustion air and a certain heat source for the incineration of organic waste liquid. It should be understood that the heating device 20 provides a certain amount of heat energy to the incineration device 30, thereby reducing the auxiliary fuel required for the treatment of organic waste liquid with high moisture content in the incineration device 30, and lowering the system operating cost.

[0061] In some embodiments, the heating device 20 further includes a second heat exchanger 25 having a second input terminal 251 and a second output terminal 252, wherein the second input terminal 251 is connected to the second air inlet terminal 21 and the second output terminal 252 is connected to the third input terminal 261.

[0062] It should be understood that the second heat exchanger 25 can be a heat exchanger, and the heat source can be low-pressure steam, which converts all the small amount of liquid phase in the mixed air into gas phase, and the condensate after condensation of the low-pressure steam can be recycled. Furthermore, the gas temperature output from the second output terminal 252 can be between 110℃ and 150℃. Specifically, the gas temperature output from the second output terminal 252 can be any value or a range between any two of 110℃, 120℃, 130℃, 140℃, and 150℃, depending on the actual design requirements; this application does not limit this. The second heat exchanger 25 can preheat the first heat exchanger 26, reducing the number of first heat exchangers 26 and lowering the overall system cost. Furthermore, the second heat exchanger 25 can be located outside the system and does not directly participate in the internal heat exchange process, making it easier to clean, maintain, and replace. This reduces system downtime and maintenance costs, and improves system reliability and maintainability.

[0063] In some embodiments, the incineration apparatus 30 includes: a burner 34 including a spray gun, the spray gun being connected to a third air inlet 32; and an incinerator 35 connected to the spray gun, the incinerator 35 having a fifth input end 351, a sixth input end 352 and a fifth output end 353, the fifth input end 351 being connected to a second liquid inlet 31, the sixth input end 352 being connected to the third air inlet 32, and the fifth output end 353 being connected to a third air outlet 33.

[0064] It should be understood that the burner 34 is used to provide fuel, and in this application, it is used to provide gaseous fuel. The gas introduced through the third air inlet 32 ​​is injected into the incinerator 35 through a spray gun to fully contact the air in the incinerator 35 and improve the combustion efficiency in the incinerator 35. The incinerator 35 is used to incinerate organic waste liquid, so that the organic matter in the organic waste liquid is oxidized and decomposed under high temperature conditions to generate high-temperature flue gas for discharge. That is, the organic waste liquid is introduced through the fifth input end 351, the mixed gas is introduced through the sixth input end 352, and the fifth output end 35... 3. The high-temperature flue gas after incineration is discharged. The incinerator 35 can be a cylindrical structure, consisting of an outer steel shell and an inner castable / refractory brick. The furnace temperature of the incinerator 35 can be controlled at 1100℃ and above. The incinerator 35 also has a spray gun. The outlet of the booster pump 70 is connected to the waste liquid spray gun of the incinerator 35 through the fifth input end 351 to atomize the organic waste liquid and spray it into the incinerator 35 for incineration. The gas input through the sixth input end 352 is sprayed into the incinerator 35 for incineration through the gas spray gun. In this system, the gas input from the sixth input terminal 352 and the organic waste liquid input from the fifth input terminal 351 are sprayed into the incinerator 35 and thoroughly mixed and combusted, improving the combustion effect within the incinerator 35 and thus more completely burning the organic matter in the waste liquid. The gas input from the third inlet terminal 32 is sprayed into the incinerator 35 through the burner 34 to provide combustion-supporting gas, increasing the oxygen content within the incinerator 35 and promoting the combustion reaction. Furthermore, direct spraying into the incinerator 35 provides a heat source, thereby reducing the auxiliary fuel required for treating organic waste liquid with high moisture content in the incineration device, lowering system operating costs. Additionally, the combustion of organic matter in the treated gas ensures the complete oxidation and decomposition of toxic and harmful substances. In this application, the amounts of gas input from the third inlet terminal 32 entering the incinerator 35 and burner 34 can be designed according to actual requirements, and this application does not impose any limitations on this.

[0065] In some embodiments, the emission device 40 includes a flue gas purification device 43, an induced draft fan 44 and a chimney 45 connected in sequence, with a fourth air inlet 41 connected to the flue gas purification device 43 and the outlet of the chimney 45 configured as a fourth air outlet 42.

[0066] It should be understood that the flue gas purification equipment 43 can be one or a combination of dust collectors, denitrification reactors, and desulfurization equipment. One end of the flue gas purification equipment 43 is connected to the upstream heating device 20, and the other end is connected to the induced draft fan 44. The outlet of the induced draft fan 44 is connected to the chimney 45 through a pipeline, and the purified flue gas is finally discharged into the atmosphere through the chimney 45. In this application, the high-temperature flue gas from the outlet of the incinerator 35 passes through the waste heat boiler and the heating device 20 for waste heat recovery, and then is purified by one or more of the following methods: desulfurization, denitrification, and dust removal, through the flue gas purification equipment 43, to meet the pollutant emission standards required by environmental protection regulations, and finally discharged into the atmosphere through the induced draft fan 44 and the chimney 45.

[0067] In this application, combustion air is used as a medium to extract some organic matter and water from external high-water-content organic wastewater, converting some of the liquid water in the wastewater into gaseous water. This reduces the amount of liquid wastewater that needs to be treated directly. On the one hand, it can reduce the fuel consumption of the system by about 25%. On the other hand, the gaseous water dilutes the oxygen content in the combustion air, which can effectively reduce the generation of thermal NOx during the combustion process in a low-oxygen environment, thus improving the actual energy-saving and environmental protection efficiency of the wastewater incineration device.

[0068] This application also provides an incineration treatment system, including the above-described organic waste liquid incineration treatment device. Therefore, this incineration treatment system can possess all the technical features and beneficial effects of the above-described organic waste liquid incineration treatment device, which will not be elaborated further here.

[0069] The above provides a detailed description of an organic waste liquid incineration treatment device and incineration treatment system provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An organic waste liquid incineration treatment device, characterized in that, include: The air-lift device (10) has a first liquid inlet (11), a first liquid outlet (12), a first air inlet (13) and a first air outlet (14), wherein the first liquid inlet (11) is configured to introduce organic waste liquid and the first air inlet (13) is configured to introduce air. The heating device (20) has a second air inlet (21) and a second air outlet (22), wherein the second air inlet (21) is connected to the first air outlet (14); The incineration device (30) has a second liquid inlet (31), a third air inlet (32) and a third air outlet (33), wherein the second liquid inlet (31) is connected to the first liquid outlet (12) and the third air inlet (32) is connected to the second air outlet (22); The emission device (40) has a fourth air inlet (41) and a fourth air outlet (42), the fourth air inlet (41) being connected to the third air outlet (33) and the fourth air outlet (42) being connected to the outside atmosphere.

2. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The heating device (20) also has a fifth air inlet (23) and a fifth air outlet (24), the fifth air outlet (24) being connected to the fourth air inlet (41); The processing device further includes: The waste heat recovery device (50) has a sixth air inlet (51) and a sixth air outlet (52), wherein the sixth air inlet (51) is connected to the third air outlet (33) and the sixth air outlet (52) is connected to the fifth air inlet (23).

3. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The air-lift device (10) includes: Heater (15); The circulating pump (16) has a first input end (161) and a first output end (162), wherein the first input end (161) is connected to the first liquid inlet end (11); The gas stripping tower (17) has a gas input end (171), a gas output end (172), a liquid input end (173), a first liquid output end (174), and a second liquid output end (175). The gas input end (171) is connected to the first gas inlet end (13), the gas output end (172) is connected to the first gas outlet end (14), the first output end (162) is connected to the liquid input end (173) via the heater (15), the first liquid output end (174) is connected to the first input end (161), and the second liquid output end (175) is connected to the first liquid outlet end (12).

4. The organic waste liquid incineration treatment device according to claim 2, characterized in that, The heating device (20) includes: The first heat exchanger (26) has a third input terminal (261), a third output terminal (262), a fourth input terminal (263) and a fourth output terminal (264). The third input terminal (261) is connected to the second air inlet terminal (21), the third output terminal (262) is connected to the second air outlet terminal (22), the fourth input terminal (263) is connected to the fifth air inlet terminal (23), and the fourth output terminal (264) is connected to the fifth air outlet terminal (24).

5. The organic waste liquid incineration treatment device according to claim 4, characterized in that, The heating device (20) includes a plurality of first heat exchangers (26), which are connected in sequence. The third input end (261) and the third output end (262) between two adjacent first heat exchangers (26) are connected to each other, and the fourth input end (263) and the fourth output end (264) are connected to each other. The gas introduced by the fifth inlet end (23) passes through the plurality of first heat exchangers (26) in a first sequential direction to the fifth outlet end (24). The gas introduced by the second inlet end (21) passes through the plurality of first heat exchangers (26) in a second sequential direction to the second outlet end (22). The first sequential direction is opposite to the second sequential direction.

6. The organic waste liquid incineration treatment device according to claim 4, characterized in that, The heating device (20) further includes: The second heat exchanger (25) has a second input terminal (251) and a second output terminal (252), the second input terminal (251) being connected to the second air inlet terminal (21), and the second output terminal (252) being connected to the third input terminal (261).

7. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The incineration device (30) includes: The burner (34) includes a spray gun that is connected to the third air inlet (32); The incinerator (35) is connected to the spray gun. The incinerator (35) has a fifth input end (351), a sixth input end (352) and a fifth output end (353). The fifth input end (351) is connected to the second liquid inlet end (31), the sixth input end (352) is connected to the third air inlet end (32), and the fifth output end (353) is connected to the third air outlet end (33).

8. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The emission device (40) includes a flue gas purification device (43), an induced draft fan (44) and a chimney (45) connected in sequence. The fourth air inlet (41) is connected to the flue gas purification device (43), and the outlet of the chimney (45) is configured as the fourth air outlet (42).

9. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The temperature of the gas in the first outlet end (14) is 50°C to 60°C.

10. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The temperature of the gas in the second outlet (22) is 300°C to 400°C.

11. The organic waste liquid incineration treatment device according to claim 1, characterized in that, The oxygen content of the gas in the first outlet (14) is 16% to 21%.

12. An incineration treatment system, characterized in that, The organic waste liquid incineration treatment apparatus includes any one of claims 1 to 11.

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