A high-salt waste liquid incineration treatment system and its treatment method

Abstract

The present invention discloses a high-salt waste liquid incineration treatment system and a treatment method thereof. The salt-containing organic waste liquid and the organic waste liquid enter the incinerator separately for incineration treatment. The waste liquid with high calorific value or the auxiliary fuel enters the first combustion chamber for incineration. The salt-containing waste liquid is sprayed into the evaporation chamber, and most of the salts crystallize out within this temperature range. Subsequently, it enters the second combustion chamber for sufficient incineration. The flue gas then enters the waste heat boiler to recover heat and generate steam, and SNCR denitration is carried out in a suitable temperature range inside the furnace. Subsequently, the flue gas is cooled by the quench tower and then enters the bag filter for dry dust removal. The clean flue gas after dust removal passes through the wet quench cooler to an appropriate temperature and enters the alkali scrubber to remove acidic components. The flue gas after acid removal enters the chimney for up-to-standard emission. The present invention can evaporate and precipitate the salts in the waste to avoid blocking and corroding the equipment, and at the same time incinerate and treat the organic waste in the flue gas completely.

Description

Technical Field

[0001] The present invention relates to the technical fields of flue gas purification and environmental protection, and particularly relates to a high-salt waste liquid incineration treatment system and a treatment method thereof. Background Art

[0002] With the development of the pharmaceutical industry, pharmaceutical wastewater has gradually become one of the important pollution sources. Due to the complex composition, high organic matter content, high toxicity, deep color, and high salt content of pharmaceutical wastewater, especially its poor biodegradability and intermittent discharge, it is very difficult to treat.

[0003] Currently, the incineration method is commonly used to treat high-salt waste liquid. Treating hazardous waste by incineration has the advantages of high harmlessness degree, good volume reduction effect, high resource utilization rate, small land occupation, etc. It can completely kill harmful microorganisms, viruses, etc. in the waste, and most harmful compounds are decomposed into simple harmless substances (mainly CO2 and H2O), and flammable substances are completely oxidized to reach a stable state. This treatment method mainly includes units such as an incinerator, waste heat recovery, and flue gas purification. A typical treatment process is as follows: The salt-containing organic waste liquid and the organic waste liquid enter different positions of the incinerator for incineration treatment. When there is solid waste, it enters the rotary kiln for incineration. After incineration, the flue gas enters the second combustion chamber for full combustion and decomposition, and then enters the waste heat boiler to recover heat and generate steam, and SNCR denitration is carried out in a suitable temperature range in the furnace. The steam generated by the boiler can preheat the combustion-supporting air to save fuel. The flue gas at the boiler outlet is cooled by a quench tower and then enters a bag filter for dry dust removal. The clean flue gas after dust removal is wet-cooled to a suitable temperature, and then enters an alkali washing tower to remove acidic components. The flue gas after acid removal enters the chimney and is discharged up to standard.

[0004] Most of the melting points of the salts contained in the high-salt waste liquid do not exceed 900 °C. For example, the melting point of potassium fluoride is 858 °C, the melting point of sodium chloride is 801 °C, the melting point of sodium bromide is 755 °C, the melting point of sodium sulfate is 884 °C, the melting point of sodium carbonate is 851 °C, etc.

[0005] (1) During the incineration process, the salts in the waste liquid are easily adhered to the surface of the refractory material of the incinerator, which will cause corrosion and expansion of the refractory bricks;

[0006] (2) The salt content in the flue gas generated by incineration is relatively high. In the low-temperature section, the liquid salts will re-solidify and deposit inside the equipment or in the flue, causing system blockage.

[0007] Aiming at the defects of the current existing technologies, the present invention provides a high-salt waste liquid incineration treatment system and a treatment method thereof. Summary of the Invention

[0008] In view of the above-mentioned defects of the prior art, the technical object of the present invention is to provide a high-salt waste liquid incineration treatment system and a treatment method thereof.

[0009] To achieve the above technical objectives, the present invention provides the following technical solutions: A high-salt waste liquid incineration treatment system of the present invention, the high-salt waste liquid incineration treatment system includes a first combustion chamber, an evaporation chamber, a second combustion chamber, a waste heat boiler, a quench tower, a bag filter, a wet quench cooler, an alkali wash tower, a tail gas scrubber, and a chimney connected in sequence through pipelines;

[0010] The first combustion chamber, evaporation chamber, second combustion chamber, waste heat boiler, quench tower, bag filter, wet quench cooler, alkali wash tower, tail gas scrubber, and chimney are all provided with inlets and outlets; The outlet of the first combustion chamber is connected to the inlet of the evaporation chamber through a pipeline; The outlet of the evaporation chamber is connected to the inlet of the second combustion chamber through a pipeline;

[0011] The outlet of the second combustion chamber is connected to the inlet of the waste heat boiler through a pipeline; The outlet of the waste heat boiler is connected to the inlet of the quench tower through a pipeline; The outlet of the quench tower is connected to the inlet of the bag filter through a pipeline; The outlet of the bag filter is connected to the inlet of the wet quench cooler through a pipeline, the outlet of the wet quench cooler is connected to the inlet of the alkali wash tower through a pipeline, the outlet of the alkali wash tower is connected to the inlet of the tail gas scrubber through a pipeline, and the outlet of the tail gas scrubber is connected to the inlet of the chimney through a pipeline.

[0012] Further, the first combustion chamber is provided with a waste liquid spray gun, and the waste liquid is sprayed into the first combustion chamber from the inlet. A temperature transmitter is provided at the outlet of the first combustion chamber; The inlet of the evaporation chamber is provided with a multi-angle high-salt waste liquid spray gun, and a temperature transmitter is provided at the outlet of the evaporation chamber.

[0013] Further, the second combustion chamber is provided with an auxiliary fuel spray gun, and the spray gun angle is tangentially arranged; A temperature transmitter is provided at the outlet of the second combustion chamber.

[0014] The present invention uses the high-salt waste liquid incineration treatment system for incineration treatment methods, including the following steps:

[0015] (1) The organic waste liquid is sprayed into the first combustion chamber from the inlet. A air supply system and auxiliary fuel are provided in the first combustion chamber to make the temperature of the first combustion chamber 800 - 1200 °C;

[0016] (2) The evaporation chamber is arranged below the first combustion chamber. The high-salt organic waste liquid is sprayed into the high-temperature flue gas at the outlet of the first combustion chamber from the enlarged diameter at the transition section between the evaporation chamber and the first combustion chamber through a multi-angle arranged spray gun, and the gasification of the waste liquid, the evaporation of the organic matter, and the precipitation of the salt are completed in the evaporation chamber;

[0017] The flue gas flow in the first combustion chamber and the evaporation chamber is from top to bottom. However, the flue gas at the outlet of the evaporation chamber will change its flow direction. After a 180-degree transformation, it will enter the second combustion chamber from bottom to top. During the process of flow direction switching, the salt particles in the flue gas fall into the ash hopper due to the density difference and fluid inertia. A screw discharger is installed in the ash hopper, and sand is fed into the inlet of the discharger. Using the sand as a medium, the salt particles are deposited on the surface of the sand and then are rotated out of the incinerator by the discharger.

[0018] (3)The flue gas at the outlet of the evaporation chamber enters the second combustion chamber. Two sets of natural gas burners are installed in the second combustion chamber. Through the heat generated by natural gas combustion, the flue gas at the outlet of the evaporation chamber is heated to 1100 °C, and the unburned organic matter in the first combustion chamber and the organic matter evaporated in the evaporation chamber are completely burned in the second combustion chamber.

[0019] (4)Subsequently, the high-temperature flue gas at the outlet of the second combustion chamber enters the waste heat boiler, and steam is recovered and reused by exchanging heat with deaerated water.

[0020] (5)The flue gas at the outlet of the waste heat boiler enters the quench tower for cooling to avoid the formation of dioxins.

[0021] (6)The flue gas at the outlet of the quench tower enters the bag filter to remove the dust in the flue gas.

[0022] (7)The clean flue gas after dust removal by the bag filter passes through the wet quench cooler to an appropriate temperature, and then enters the alkali scrubber to remove acidic components. The qualified flue gas is sent to the chimney for up-to-standard discharge by the induced draft fan.

[0023] Further, in step (1), a temperature transmitter is installed at the outlet of the first combustion chamber to monitor the temperature Tl of the flue gas at the outlet of the first combustion chamber, and the feed rate of the organic waste liquid is controlled by interlock control. When Tl < 800 °C, the feed rate is increased; when Tl > 1200 °C, the feed rate is decreased.

[0024] Further, in step (2), multi-angle salt-containing waste liquid spray guns are installed at the inlet of the evaporation chamber, and a temperature transmitter is installed at the outlet of the evaporation chamber to monitor the temperature T2 of the flue gas in the evaporation chamber, and the feed rate of the salt-containing waste liquid of the burner is controlled by interlock control. When T2 < 400 °C, the feed rate of the salt-containing waste liquid is decreased; when T2 > 800 °C, the feed rate of the salt-containing waste liquid is increased.

[0025] Furthermore, in step (3), an auxiliary fuel spray gun is installed in the second combustion chamber, and the spray gun angle is tangentially set. A temperature transmitter is installed at the outlet of the second combustion chamber to monitor the temperature T3 of the flue gas in the second combustion chamber, and the fuel quantity in the second combustion chamber is controlled by interlock control. When T2 < 1100 °C, the fuel quantity is increased; when T3 > 1200 °C, the fuel quantity is decreased.

[0026] Furthermore, in step (3), the residence time of the flue gas in the second combustion chamber is 2 seconds.

[0027] The salt-containing organic waste liquid and the organic waste liquid enter the incinerator at different positions for incineration treatment. The high-calorific value waste liquid or auxiliary fuel enters the first combustion chamber for incineration, and the temperature is maintained at 800 - 1200 °C. The salt-containing waste liquid is sprayed into the evaporation chamber, and the temperature of the evaporation chamber is maintained at 400 - 800 °C. Most of the salts crystallize out within this temperature range and then enter the second combustion chamber for full incineration at a temperature of 1100 °C. Subsequently, the flue gas enters the waste heat boiler to recover heat and generate steam, and SNCR denitration is carried out in a suitable temperature range in the furnace. Subsequently, the flue gas is cooled in the quench tower and then enters the bag filter for dry dust removal. The clean flue gas after dust removal is wet-cooled to a suitable temperature and then enters the caustic scrubber to remove acidic components. The flue gas after acid removal enters the chimney and is discharged up to standard.

[0028] Beneficial effects: The present invention can evaporate and precipitate salts in the waste to avoid clogging and corrosion of equipment, and at the same time incinerate and dispose of organic wastes in the flue gas completely.

[0029] Compared with the existing incineration treatment methods for salt-containing waste liquid, the present invention has the following advantages:

[0030] (1) The waste liquid incinerator adopts three-stage combustion. The first stage is the combustion of organic waste liquid or auxiliary fuel to provide sufficient heat. The second stage is the evaporation and salt precipitation of the salt-containing waste liquid. After the inorganic salts precipitate, they fall into the ash hopper for extraction. The third stage uses auxiliary fuel for re-combustion to heat the flue gas at the outlet of the second stage to 1100 °C, and the residence time is more than 2 s, meeting the requirements of national specifications.

[0031] (2) The flue gas flow in the first combustion chamber and the evaporation chamber is from top to bottom, while the flue gas at the outlet of the evaporation chamber will change its flow direction. After a 180-degree transformation, it will enter the second combustion chamber from bottom to top. During the flow direction switching process, the salt particles in the flue gas fall into the ash hopper due to the density difference and fluid inertia.

[0032] (3) A screw feeder is provided in the ash hopper. Sand is fed into the inlet of the feeder. Taking the sand as a medium, the salt particles are deposited on the surface of the sand. On the one hand, it is used to protect the screw blade from erosion by high-temperature flue gas. On the other hand, the salt particles falling into the ash hopper are first deposited on the sand or salt particles to avoid caking due to salt particle deposition. Subsequently, they are rotated out of the incinerator by the feeder. Description of the Drawings

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Among them:

[0034] Wherein: 1 is the first combustion chamber, 2 is the evaporation chamber, 3 is the second combustion chamber, 4 is the waste heat boiler, 5 is the quench tower, 6 is the bag filter, 7 is the wet quench cooler, 8 is the caustic scrubber, 9 is the tail gas scrubber, and 10 is the chimney;

[0035] Figure 1 is the process schematic diagram of the present invention;

[0036] Figure 2 is the temperature control schematic diagram in the first combustion chamber of the present invention;

[0037] Figure 3 is the temperature control schematic diagram in the evaporation chamber of the present invention;

[0038] Figure 4 is the temperature control schematic diagram in the second combustion chamber of the present invention. Specific Embodiments

[0039] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the drawings to fully understand the purpose, features and effects of the present invention. Embodiment

[0040] As Figures 1 to 4 shown, a high-salt waste liquid incineration treatment system of the present invention, the high-salt waste liquid incineration treatment system includes a first combustion chamber 1, an evaporation chamber 2, a second combustion chamber 3, a waste heat boiler 4, a quench tower 5, a bag filter 6, a wet quench cooler 7, a caustic scrubber 8, a tail gas scrubber 9 and a chimney 10 connected in sequence through pipelines;

[0041] Both the first combustion chamber 1, the evaporation chamber 2, the second combustion chamber 3, the waste heat boiler 4, the quench tower 5, the bag filter 6, the wet quench cooler 7, the caustic scrubber 8, the tail gas scrubber 9 and the chimney 10 are provided with inlets and outlets; the outlet of the first combustion chamber 1 is connected to the inlet of the evaporation chamber 2 through a pipeline; the outlet of the evaporation chamber 2 is connected to the inlet of the second combustion chamber 3 through a pipeline;

[0042] The outlet of the second combustion chamber 3 is connected to the inlet of the waste heat boiler 4 through a pipeline; the outlet of the waste heat boiler 4 is connected to the inlet of the quench tower 5 through a pipeline; the outlet of the quench tower 5 is connected to the inlet of the bag filter 6 through a pipeline; the outlet of the bag filter 6 is connected to the inlet of the wet quench cooler 7 through a pipeline, the outlet of the wet quench cooler 7 is connected to the inlet of the caustic scrubber 8 through a pipeline, the outlet of the caustic scrubber 8 is connected to the inlet of the tail gas scrubber 9 through a pipeline, and the outlet of the tail gas scrubber 9 is connected to the inlet of the chimney 19 through a pipeline.

[0043] The described first combustion chamber 1 is provided with a waste liquid spray gun, and the waste liquid is sprayed into the inlet of the first combustion chamber 1. A temperature transmitter is provided at the outlet of the first combustion chamber 1; the inlet of the evaporation chamber 2 is provided with a multi-angle salt-containing waste liquid spray gun, and a temperature transmitter is provided at the outlet of the evaporation chamber 2.

[0044] The described second combustion chamber 3 is provided with an auxiliary fuel spray gun, and the spray gun angle is tangentially arranged; a temperature transmitter is provided at the outlet of the second combustion chamber 3. Embodiment

[0045] The present invention uses the described high-salt waste liquid incineration treatment system for incineration treatment method, including the following steps:

[0046] (1) The organic waste liquid is sprayed into the inlet of the first combustion chamber 1. A air supply system and auxiliary fuel are provided in the first combustion chamber 1 to make the temperature of the first combustion chamber 1 be 800 - 1200 °C; a temperature transmitter is provided at the outlet of the first combustion chamber 1 to monitor the flue gas temperature Tl at the outlet of the first combustion chamber 1, and the organic waste liquid feed rate is controlled by interlock control; when Tl < 800 °C, increase the feed rate; when Tl > 1200 °C, reduce the feed rate.

[0047] (2) The evaporation chamber 2 is arranged below the first combustion chamber 1. The salt-containing organic waste liquid is sprayed into the high-temperature flue gas at the outlet of the first combustion chamber 1 through a multi-angle arranged spray gun at the enlarged diameter of the transition section between the evaporation chamber 2 and the first combustion chamber 1. In the evaporation chamber 2, the gasification of the waste liquid, the evaporation of the organic matter and the precipitation of the salt are completed; the inlet of the evaporation chamber 2 is provided with a multi-angle salt-containing waste liquid spray gun, and a temperature transmitter is provided at the outlet of the evaporation chamber 2 to monitor the flue gas temperature T2 in the evaporation chamber 2, and the salt-containing waste liquid feed rate of the first combustion chamber 1 is controlled by interlock control; when T2 < 400 °C, reduce the salt-containing waste liquid feed rate; when T2 > 800 °C, increase the salt-containing waste liquid feed rate.

[0048] The flue gas in the first combustion chamber 1 and the evaporation chamber 2 flows from top to bottom, and the flue gas at the outlet of the evaporation chamber 2 will change the flow direction. After a 180-degree transformation, it will enter the second combustion chamber 3 from bottom to top; during the flow direction switching process, the salt particles in the flue gas fall into the ash hopper due to the density difference and fluid inertia. A screw discharger is provided in the ash hopper, and sand is put into the inlet of the discharger. Taking the sand as a medium, the salt particles are deposited on the surface of the sand and then are rotated out of the incinerator by the discharger;

[0049] (3)The flue gas at the outlet of the evaporation chamber 2 enters the second combustion chamber 3. The second combustion chamber 3 is provided with two sets of natural gas burners. Through the heat generated by the combustion of natural gas, the flue gas at the outlet of the evaporation chamber 2 is heated to 1100 °C, and the unburned organic matter in the first combustion chamber 1 and the organic matter evaporated in the evaporation chamber 2 are completely burned in the second combustion chamber 3, and the residence time of the flue gas in the second combustion chamber 3 is maintained at 2 seconds;

[0050] The second combustion chamber 3 is provided with an auxiliary fuel spray gun, and the spray gun angle is tangentially arranged. A temperature transmitter is provided at the outlet of the second combustion chamber 3 to monitor the flue gas temperature T3 of the second combustion chamber 3, and the fuel quantity of the second combustion chamber is controlled by interlock; when T2 < 1100 °C, the fuel quantity is increased; when T3 > 1200 °C, the fuel quantity is decreased.

[0051] (4)The high-temperature flue gas at the outlet of the second combustion chamber 3 then enters the waste heat boiler 4, and steam is recovered and reused by exchanging heat with deaerated water;

[0052] (5)The flue gas at the outlet of the waste heat boiler 4 enters the quench tower 5 for cooling to avoid the formation of dioxins;

[0053] (6)The flue gas at the outlet of the quench tower 5 enters the bag filter 6 to remove dust in the flue gas;

[0054] (7)The clean flue gas after dust removal by the bag filter 6 passes through the wet quench cooler 7 to an appropriate temperature, and then enters the caustic scrubber 8 and the tail gas scrubber 9 to remove acidic components in the flue gas. The flue gas at the outlet of the tail gas scrubber 9 is sent to the chimney 10 by the induced draft fan for up-to-standard discharge. Example

[0055] As shown in Figure 1, the steps of the present invention are as follows: Organic waste liquid or auxiliary fuel enters the first combustion chamber 1 for burning, generating flue gas at about 800 - 1200 °C. The evaporation chamber 2 is arranged below the first combustion chamber. The salt-containing organic waste liquid is sprayed into the high-temperature flue gas at the outlet of the first combustion chamber 1 from the enlarged diameter part of the transition section between the evaporation chamber 2 and the first combustion chamber 1 through spray guns arranged at multiple angles.

[0056] In the evaporation chamber 2, the gasification of the waste liquid, the evaporation of the organic matter, and the precipitation of salts are completed. The key of the evaporation chamber 2 lies in controlling the temperature below 800 °C, which is lower than the average melting point of the salts, maintaining the salts in a granular and dry form.

[0057] The flue gas flow in the first combustion chamber 1 and the evaporation chamber 2 is from top to bottom. However, the flue gas at the outlet of the evaporation chamber 2 will change its flow direction. After a 180-degree transformation, it will enter the second combustion chamber 3 from bottom to top. During the process of flow direction switching, the salt particles in the flue gas fall into the ash hopper due to the density difference and fluid inertia. A screw discharger is arranged in the ash hopper. Sand is fed into the inlet of the screw discharger. Taking the sand as a medium, the salt particles are deposited on the surface of the sand and then are rotated out of the incinerator by the screw discharger. The flue gas at the outlet of the evaporation chamber enters the second combustion chamber 3. The second combustion chamber 3 is provided with an auxiliary fuel burner. Through the heat generated by the combustion of the auxiliary fuel, the flue gas at the outlet of the evaporation chamber 2 is heated to 1100 °C. The unburned organic matter in the first combustion chamber 1 and the organic matter evaporated in the evaporation chamber 2 are completely burned in the second combustion chamber 3, and the residence time of the flue gas in the second combustion chamber 3 is maintained at 2 seconds.

[0058] The flue gas coming out of the second combustion chamber 3 enters the waste heat boiler 4, undergoes heat exchange, and SNCR denitration is carried out in a suitable temperature range in the waste heat boiler 4. The heat is recovered and utilized to reduce the operation cost.

[0059] The flue gas coming out of the waste heat boiler 4 is cooled in the quench tower 5 and then enters the bag filter 6 for dust removal. After dust removal, the flue gas is cooled to a suitable temperature in the wet quench cooler 7 and then enters the caustic scrubber 8 and the tail gas scrubber 9 for flue gas deacidification treatment. Finally, the flue gas enters the chimney 10 through the induced draft fan and is discharged up to the standard.

[0060] As Figure 2 shown, it is a schematic diagram of the temperature control in the first combustion chamber 1. A temperature sensor is arranged at the flue gas outlet of the first combustion chamber 1 to detect the flue gas temperature T1 in the first combustion chamber 1, and the auxiliary fuel feed rate of the first combustion chamber 1 is controlled by interlock. When T1 is in the range of 800 - 1200 °C, the feed rate remains unchanged; when T1 < 800 °C, the feed rate is increased; when T1 > 1200 °C, the feed rate is decreased.

[0061] As Figure 3 shown, it is a schematic diagram of the temperature control in the evaporation chamber 2. A temperature sensor is arranged at the flue gas outlet of the evaporation chamber 2 to detect the flue gas temperature T2 in the second combustion chamber 3, and the feed rate of the salt-containing waste liquid in the second combustion chamber 3 is controlled by interlock. When T2 is in the range of 400 - 800 °C, the feed rate remains unchanged; when T2 < 400 °C, the feed rate of the salt-containing waste liquid is decreased; when T2 > 800 °C, the feed rate of the salt-containing waste liquid is increased.

[0062] As Figure 4 shown, Figure 4Schematic diagram of temperature control in the second combustion chamber 3 of the present invention. A temperature sensor is provided at the flue gas outlet of the second combustion chamber 3 to detect the flue gas temperature T3 in the second combustion chamber 3, and the fuel quantity of the second combustion chamber 3 is controlled by interlock. When T3 is within the range of 1100 - 1200 °C, the fuel quantity remains unchanged; when T3 < 1100 °C, the fuel quantity is increased; when T3 > 1200 °C, the fuel quantity is decreased.

[0063] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A method for incineration treatment using a high-salt waste liquid incineration treatment system, characterized in that: The high-salt waste liquid incineration treatment system includes a first combustion chamber, an evaporation chamber, a second combustion chamber, a waste heat boiler, a quenching tower, a bag filter, a wet quencher, an alkali scrubber, a tail gas scrubber, and a chimney, which are connected in sequence through pipelines; The treatment method includes the following steps: (1) The organic waste liquid is sprayed into the inlet of the first combustion chamber. A air supply system and auxiliary fuel are arranged in the first combustion chamber to make the temperature of the first combustion chamber 800 - 1200 °C; (2) The evaporation chamber is arranged at the lower part of the first combustion chamber. The salt-containing organic waste liquid is sprayed into the high-temperature flue gas at the outlet of the first combustion chamber from the enlarged diameter part of the transition section between the evaporation chamber and the first combustion chamber through multi-angle arranged spray guns, and the gasification of the waste liquid, the evaporation of the organic matter and the precipitation of the salt are completed in the evaporation chamber; In step (2), a temperature transmitter is arranged at the outlet of the evaporation chamber to monitor the flue gas temperature T2 in the evaporation chamber, and the feeding amount of the salt-containing organic waste liquid of the burner is controlled by interlock; when T2 < 400 °C, the feeding amount of the salt-containing organic waste liquid is reduced; when T2 > 800 °C, the feeding amount of the salt-containing organic waste liquid is increased; The flue gas in the first combustion chamber and the evaporation chamber flows from top to bottom, while the flue gas at the outlet of the evaporation chamber will change its flow direction. After a 180-degree transformation, it will enter the second combustion chamber from bottom to top; during the process of flow direction switching, the salt particles in the flue gas fall into the ash hopper due to the density difference and fluid inertia. A screw discharger is arranged in the ash hopper, and sand is put into the inlet of the discharger. Taking the sand as a medium, the salt particles are deposited on the surface of the sand and then are rotated out of the incinerator by the discharger; (3) The flue gas at the outlet of the evaporation chamber enters the second combustion chamber. Two sets of natural gas burners are arranged in the second combustion chamber. Through the heat of natural gas combustion, the flue gas at the outlet of the evaporation chamber is heated to 1100 °C, and the unburned organic matter in the first combustion chamber and the organic matter evaporated in the evaporation chamber are completely burned in the second combustion chamber; (4) The high-temperature flue gas at the outlet of the second combustion chamber then enters the waste heat boiler, and steam is recovered through heat exchange with deaerated water for reuse; (5) The flue gas at the outlet of the waste heat boiler enters the quenching tower for cooling to avoid the formation of dioxins; (6) The flue gas at the outlet of the quenching tower enters the bag filter to remove the dust in the flue gas; (7) The clean flue gas after dust removal by the bag filter passes through the wet quencher to an appropriate temperature, and then enters the alkali scrubber to remove the acidic components. The flue gas after acid removal is sent to the chimney for up-to-standard discharge by the induced draft fan.

2. The incineration treatment method using the high-salt waste liquid incineration treatment system according to claim 1, wherein: A temperature transmitter is arranged at the outlet of the first combustion chamber.

3. The incineration treatment method using the high-salt waste liquid incineration treatment system according to claim 1, wherein: The second combustion chamber is provided with an auxiliary fuel spray gun, and the spray gun angle is tangentially arranged; a temperature transmitter is arranged at the outlet of the second combustion chamber.

4. The incineration treatment method using the high-salt waste liquid incineration treatment system according to claim 2, wherein: In step (1), the temperature transmitter arranged at the outlet of the first combustion chamber monitors the flue gas temperature Tl at the outlet of the first combustion chamber, and the feeding amount of the organic waste liquid is controlled by interlock; when Tl < 800 °C, the feeding amount is increased; when Tl > 1200 °C, the feeding amount is reduced.

5. The incineration treatment method using the high-salt waste liquid incineration treatment system according to claim 3, wherein: In step (3), a temperature transmitter installed at the outlet of the second combustion chamber monitors the flue gas temperature T3 of the second combustion chamber, and the fuel quantity of the second combustion chamber is controlled by interlock; when T2 < 1100 °C, the fuel quantity is increased; when T3 > 1200 °C, the fuel quantity is decreased.

6. The incineration treatment method of the high-salt waste liquid incineration treatment system according to claim 1, characterized in that: In step (3), the residence time of the flue gas in the second combustion chamber is 2 seconds.

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