A device for removing sodium ions from sodium-containing fuel oil
The device addresses the inefficacy and high cost of existing sodium removal processes by using a reaction extraction and sedimentation process with acetic acid and pure water to separate sodium ions from fuel oil, achieving high removal rates and resource recovery.
Patent Information
- Application Number
- CN202411364340.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2044-09-29
Smart Images
Figure CN118873992B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chemical production, and specifically relates to a device for removing sodium ions from sodium-containing fuel oil by utilizing reaction extraction and sedimentation principles, and in particular to a device for removing sodium ions from by-product sodium-containing fuel oil in the field of chemical production to achieve resource recycling of fuel oil, pollutant emission reduction, and emission compliance. Background Art
[0002] The process of propylene oxide co-oxidation will produce sodium-containing fuel oil as a by-product. If this sodium-containing fuel oil is directly sent to the incinerator, it will cause serious ash accumulation and poor water-cooled wall heat exchange effect. Traditional sodium salt removal processes either have high investment and operating costs or cannot recover energy, so it is imperative to find a reliable fuel oil sodium removal process.
[0003] Chinese Patent 201822037477.3 discloses a cleaning and filtering device for fuel oil, including a treatment tank, a flocculation box and a filter box; the scum and sediment in the fuel oil are treated by the treatment tank, and the treated fuel oil enters the flocculation box through a connecting pipe for a flocculation process, and then flows into the filter box through a connecting pipe, and a filtering process is carried out under the action of a filter cylinder, thereby separating the flocculated impurities from the fuel oil.
[0004] Chinese patent 202020386612.X discloses a cleaning and filtering device for fuel oil, including a main body box, a defloating filtering mechanism and a flocculation mechanism; the defloating filtering mechanism driven by a servo motor cleans and collects the scum in the fuel oil, and the provided filter cover can isolate the sediment at the bottom of the processing tank, thereby removing impurities in the fuel oil, and then filtering out the impurities generated after flocculation in the flocculation mechanism, thereby further improving the quality of the fuel oil.
[0005] The above patent has a good treatment effect on scum, sediment, etc. in fuel oil, but is helpless against sodium salt dissolved in fuel oil.
[0006] Chinese Patent 201810879166.3 discloses a sodium removal agent suitable for organic sodium salts in crude oil. The sodium removal agent has good water solubility and the ability to remove organic sodium salts in crude oil. However, the sodium removal process conditions described in the patent are relatively harsh (the primary and secondary water injection volumes are both 5%, the mixing intensity is 0.8 MPa, the desalting temperature is 130°C, and the electric field strength is 2000 V / cm). Organic ammonium salts, inorganic ammonium salts and transfer aids are the effective components of the crude oil sodium removal agent and cannot be applied in this field.
[0007] It can be seen that the current literature either cannot remove the organic sodium salt dissolved in the fuel oil, or the desalination process has certain limitations. The purpose of the present invention is to solve this problem and solve the problem that the sodium removal technical solution is too complicated and the equipment cost is too high. Summary of the invention
[0008] The object of the present invention is to provide a device for removing sodium ions from sodium-containing fuel oil to overcome the above-mentioned defects in the prior art.
[0009] The device for removing sodium ions from sodium-containing fuel oil of the present invention comprises a static mixer, a reaction extractor, a reactor discharge pump, a settling tank, an oil phase extraction pump and a water phase extraction pump connected by chemical pipelines; the static mixer is provided with an inlet and an outlet, and pipelines for conveying sodium-containing fuel oil, pure water and acetic acid are connected to the inlet of the static mixer after merging; the reaction extractor is provided with a mixed material inlet on the side, a gas phase discharge port on the top and a liquid phase outlet on the bottom, and the mixed material inlet of the reaction extractor is connected to the outlet of the static mixer; the reactor discharge pump is provided with an inlet and an outlet, and the inlet of the reactor discharge pump is connected to the liquid phase outlet of the reaction extractor; the settling tank is provided with a gas phase balance pipeline inlet on the top, a liquid phase inlet on the side, an oil phase extraction outlet and a liquid phase outlet on the other side opposite to the liquid phase inlet The positions of the liquid phase production port and the oil phase production port are higher than those of the liquid phase production port, and the liquid phase inlet of the settling tank is connected to the outlet of the reactor discharge pump; the oil phase production port and the water phase production port of the settling tank are respectively connected to the oil phase production pump and the water phase production pump; in the reaction extractor, the sodium phenol carried in the sodium-containing fuel oil undergoes a replacement reaction with acetic acid to generate phenol and sodium acetate, and pure water is used as an extractant to dissolve the sodium acetate generated by the reaction in water to form acidic wastewater; a small amount of water evaporated by heat is discharged from the gas phase discharge port at the top of the reaction extractor, and the liquid phase after the reaction is discharged from the liquid phase outlet at the bottom of the reaction extractor to the reactor discharge pump, and then sent to the settling tank for static sedimentation and stratification, and the oil phase after sedimentation and stratification is sent to the incinerator through the oil phase production pump, and the water phase after sedimentation and stratification is sent to the wastewater treatment device through the water phase production pump.
[0010] Furthermore, an acetic acid flow meter and an acetic acid regulating valve are provided on the pipeline for conveying acetic acid, a pure water flow meter and a pure water regulating valve are provided on the pipeline for conveying pure water, and a fuel oil flow meter and a fuel oil regulating valve are provided on the pipeline for conveying sodium-containing fuel oil; the addition amount of acetic acid is controlled by the acetic acid flow meter and the acetic acid regulating valve, the addition amount of pure water is controlled by the pure water flow meter and the pure water regulating valve, and the addition amount of sodium-containing fuel oil is controlled by the fuel oil flow meter and the fuel oil regulating valve; acetic acid, pure water and fuel oil are mixed in a mixing material pipeline according to a certain mass ratio, and then enter the reaction extractor after being evenly mixed in a static mixer.
[0011] Nitrogen is injected into the settling tank through the gas balance pipeline on the top of the settling tank, or the excess gas in the settling tank is discharged to the tail gas treatment system to maintain the internal pressure of the settling tank stable at 5.0~7.0KPa to avoid overpressure or underpressure of the settling tank; the oil phase production outlet and water phase production outlet of the settling tank are respectively connected to the oil phase production pump and the water phase production pump, and the outlet of the oil phase production pump is connected to the incinerator after passing through the oil phase production flowmeter and the oil phase production regulating valve; the outlet of the water phase production pump is connected to the wastewater treatment device after passing through the water phase production flowmeter and the water phase production regulating valve.
[0012] The hollow pipeline of the static mixer is provided with rotating blades and static cylinders, and the rotating blades and static cylinders fixed in the pipeline are used to change the flow state of the fluid in the pipeline to achieve the purpose of good dispersion and full mixing between sodium-containing fuel oil, acetic acid and pure water.
[0013] The reaction extractor (1.8 meters in diameter, 4.86 meters in height, and a total volume of 10.2 m³) is provided with a steam heating jacket on the outside, and a steam inlet and a steam outlet are provided on the steam heating jacket; a two-layer double-blade stirrer is provided inside the reaction extractor, and a flow baffle is provided on the inner wall to further fully mix the sodium-containing fuel oil with acetic acid and pure water in the reaction extractor to avoid stratification of the sodium-containing fuel oil and the water phase; the sodium-containing fuel oil reacts and extracts with acetic acid and pure water in the reaction extractor; the reaction extractor is heated to 0.5 MPa, 15 Steam at 5~160℃ controls the reaction temperature of the reaction extractor at 75~85℃, the stirring speed at 20~30r / min, the reaction extraction time at 1~3h, and the sodium phenol carried in the sodium-containing fuel oil undergoes a replacement reaction with acetic acid to generate phenol and sodium acetate. Pure water is used as an extractant to dissolve the sodium acetate generated by the reaction in water to form acidic wastewater; a small amount of water evaporated by heat will be discharged from the gas phase discharge port at the top of the reaction extractor, and the liquid phase after the reaction will be discharged from the liquid phase outlet at the bottom of the reaction extractor to the reactor discharge pump.
[0014] The settling tank is provided with a steam heating coil inside, and a steam inlet and outlet are provided at the bottom of the settling tank. The material temperature in the settling tank is maintained at 65-75°C by 0.5MPa, 155-160°C steam, and the pressure in the settling tank is maintained at 5.0-7.0KPa by a gas phase balance pipeline to prevent the settling tank from expanding or deflation. The liquid phase from the reaction extractor is connected to the reactor discharge pump via a chemical pipeline, and then sent to the settling tank for static sedimentation and stratification.
[0015] The settling tank is equipped with an interface level meter. Since the positions of the water phase and oil phase outlets relative to the side of the settling tank are fixed, the acidic wastewater needs to be pumped to the wastewater treatment device in time according to the liquid level through the water phase extraction pump to avoid the water phase level being too high so that the acidic wastewater is sent to the incinerator with the oil phase. The water phase extraction flowmeter and the water phase extraction regulating valve control the delivery of the water phase. The oil phase after sedimentation and stratification is pumped to the incinerator through the oil phase extraction pump, and the oil phase extraction flowmeter and the oil phase extraction regulating valve control the delivery of the oil phase.
[0016] Preferably, the static mixer can also be replaced by a pipeline mixer to ensure that acetic acid, pure water, and sodium-containing fuel oil are evenly mixed. The structure of the static mixer 7 or pipeline mixer can refer to the description of "JB / T 7660-2016 Static Mixer". The pressure range of the reaction discharge pump and the water phase extraction pump is 0.4~0.6MPa, and the pressure range of the oil phase extraction pump is 1.2~1.4MPa.
[0017] The beneficial effects of the present invention are as follows: acetic acid and pure water (the mass ratio of acetic acid, pure water and sodium-containing fuel oil is 1:5.5:20-24, the temperatures of acetic acid and pure water are room temperature, and the temperature of sodium-containing fuel oil is 65-75°C) are added to sodium-containing fuel oil (the effective components are mainly heavy components such as 1-phenoxy-2-propanol and 2-phenylethanol, which contains a small amount of sodium phenol impurities), the three materials are mixed evenly in a static mixer, and sodium phenol and acetic acid react in a reaction extractor (the reaction extraction temperature is controlled at 75-85°C by the steam in the jacket of the reaction extractor) to generate phenol and Sodium acetate is extracted with pure water to extract the sodium acetate dissolved in the fuel oil into the water phase, and then gravity sedimentation is carried out in a sedimentation tank to achieve oil-water stratification; the obtained oil phase is phenoxy-2-propanol, 2-phenylethanol fuel oil and a small amount of phenol generated by the reaction without sodium salt, and the obtained water phase is acidic wastewater rich in sodium acetate, which are transported to the incinerator and the wastewater treatment device through the oil phase production pump and the water phase production pump respectively to achieve the purpose of removing sodium ions in the fuel oil, wherein the oil phase is burned in the incinerator to generate 4.5MPa superheated saturated steam to achieve resource recovery and utilization.
[0018] The device for removing sodium ions from sodium-containing fuel oil disclosed by the present invention relies on the reaction extraction and sedimentation processes commonly used in the chemical industry, and uses acetic acid and sodium phenol miscible in the fuel oil for reaction extraction, so that the metal sodium ions are transferred from the oil phase to the water phase and extracted with the wastewater, thereby effectively reducing the content of the metal sodium ions in the fuel oil, realizing the resource recovery and utilization of the heavy fuel oil, and achieving the purpose of reducing pollutant emissions and meeting emission standards. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The present invention is a schematic diagram of the structure of a device for removing sodium ions from sodium-containing fuel oil. DETAILED DESCRIPTION
[0020] The present invention is further described below with reference to the accompanying drawings and examples. Unless otherwise specified, the solvents and production equipment used in the examples of the present invention are all conventional equipment in the art; the processing methods used are conventional methods in the art unless otherwise specified. Example 1
[0021] The device of the present invention is used to treat the metallic sodium ions in the sodium-containing fuel oil produced as a by-product of the co-oxidation process to produce propylene oxide. Figure 1 As shown, the device is composed of a static mixer 7 (a hollow pipeline of the static mixer 7 is provided with rotating blades and a stationary cylindrical body), a reaction extractor 8, a reactor discharge pump 10, a settling tank 11, an oil phase extraction pump 12 and a water phase extraction pump 15 connected by a chemical pipeline; the static mixer 7 is provided with an inlet and an outlet, and the inlet of the static mixer 7 is connected to a mixed material pipeline containing sodium fuel oil, pure water and acetic acid; the reaction extractor 8 is provided with a mixed material inlet on the side, a gas phase discharge port on the top, and a liquid phase outlet on the bottom, and the mixed material inlet of the reaction extractor 8 is connected to the outlet of the static mixer 7; the reactor discharge pump 10 is provided with an inlet and an outlet, and the inlet of the reactor discharge pump 10 is connected to the liquid phase outlet of the reaction extractor 8; the settling tank 11 is provided with a gas phase balance pipeline inlet on the top, a liquid phase inlet on the side, and an oil phase outlet on the other side opposite to the liquid phase inlet. The oil phase production outlet and the liquid phase production outlet are arranged at a position higher than that of the liquid phase production outlet, and the liquid phase inlet of the settling tank 11 is connected to the outlet of the reactor discharge pump 10; the oil phase production outlet and the water phase production outlet of the settling tank 11 are connected to the oil phase production pump 12 and the water phase production pump 15 respectively; in the reaction extractor 8, the sodium phenol carried in the sodium-containing fuel oil undergoes a replacement reaction with acetic acid to generate phenol and sodium acetate, and pure water is used as an extractant to dissolve the sodium acetate generated by the reaction in water to form acidic wastewater; a small amount of water evaporated by heat is discharged from the gas phase discharge port at the top of the reaction extractor 8, and the liquid phase after the reaction is discharged from the liquid phase outlet at the bottom 8 of the reaction extractor to the reactor discharge pump 10, and then sent to the settling tank 11 for static sedimentation and stratification, and the oil phase after sedimentation and stratification is sent to the incinerator through the oil phase production pump 12, and the water phase after sedimentation and stratification is sent to the wastewater treatment device through the water phase production pump 15.
[0022] First, the acetic acid flow meter 1 and the acetic acid regulating valve 2 control the acetic acid addition amount of 100kg / h, the pure water flow meter 3 and the pure water regulating valve 4 control the pure water addition amount of 550kg / h, and the fuel oil flow meter 5 and the fuel oil regulating valve 6 control the sodium-containing fuel oil addition amount of 2200kg / h, and the sodium ion content in the sodium-containing fuel oil is 3988ppm. The above three materials are mixed evenly by the static mixer 7 and then enter the reaction extractor 8 for extraction reaction. The reaction extractor 8 is provided with a steam heating jacket on the outside, and a steam inlet and a steam outlet are provided on the steam heating jacket; the reaction extractor 8 is provided with a two-layer double-blade stirrer 9 with a power of 15KW, and a flow baffle is provided on the inner wall. The reaction extraction temperature is set to 82°C by 0.5MPa and 160°C steam, the stirring speed is set to 25r / min, and the reaction extraction time is 1 hour.
[0023] The pressure of the reaction discharge pump 10 and the water phase production pump 15 was controlled to be 0.5 MPa, and the pressure of the oil phase production pump 12 was controlled to be 1.3 MPa.
[0024] The sample is taken from the outlet of the reactor discharge pump 10 and then separated into layers after standing, with the oil phase on the top and the water phase on the bottom.
[0025] The liquid phase material after the reaction is sent to the settling tank 11 by the reactor discharge pump 10 for settling and stratification. The settling tank 11 is provided with a steam heating coil inside, and a steam inlet and outlet are provided at the bottom of the settling tank 11. The material temperature in the settling tank 11 is maintained at 75°C by 0.5MPa, 160°C steam, and the pressure in the settling tank 11 is maintained at 7.0KPa by the gas phase balance pipeline inlet. The oil phase production outlet and the water phase production outlet of the settling tank are respectively connected to the oil phase production pump 12 and the water phase production pump 15. The outlet of the oil phase production pump 12 is connected to the incinerator after passing through the oil phase production flowmeter 13 and the oil phase production regulating valve 14; the outlet of the water phase production pump 15 is connected to the wastewater treatment device after passing through the water phase production flowmeter 16 and the water phase production regulating valve 17. After 24 hours, the upper oil phase material is taken for analysis, and the sodium ion content is 117ppm, and the sodium ion removal rate is 97.07%. Example 2
[0026] As in Example 1, the device of the present invention is used to treat the metallic sodium ions in the sodium-containing fuel oil produced as a byproduct of the co-oxidation process for producing propylene oxide. The acetic acid addition amount is controlled by the acetic acid flow meter 1 and the acetic acid regulating valve 2 at 180 kg / h, the pure water addition amount is controlled by the pure water flow meter 3 and the pure water regulating valve 4 at 990 kg / h, the fuel oil addition amount is controlled by the fuel oil flow meter 5 and the fuel oil regulating valve 6 at 4140 kg / h, and the sodium ion content in the sodium-containing fuel oil is 4053 ppm. The above three materials are mixed uniformly in the static mixer and then enter the reaction extractor 8 for reaction extraction.
[0027] The reaction extractor 8 is provided with a stirrer 9 with a power of 15KW. The reaction extraction temperature is set to 79°C by 0.5MPa, 155°C steam. The stirring speed is set to 25r / min and the reaction extraction time is 1 hour.
[0028] The pressure of the reaction discharge pump 10 and the water phase production pump 15 was controlled to be 0.5 MPa, and the pressure of the oil phase production pump 12 was controlled to be 1.3 MPa.
[0029] The sample is taken from the outlet of the reactor discharge pump 10 and then separated into layers after standing, with the oil phase on the top and the water phase on the bottom.
[0030] The liquid phase material after the reaction is sent to the settling tank 11 by the reactor discharge pump 10 for settling and stratification. The settling tank 11 is provided with a steam heating coil inside, and a steam inlet and outlet are provided at the bottom of the settling tank 11. The material temperature in the settling tank 11 is maintained at 65°C by 0.5MPa and 155°C steam, and the pressure in the settling tank 11 is maintained at 5.0KPa by the gas phase balance pipeline inlet. The oil phase production outlet and the water phase production outlet of the settling tank are respectively connected to the oil phase production pump 12 and the water phase production pump 15. The outlet of the oil phase production pump 12 is connected to the incinerator after passing through the oil phase production flowmeter 13 and the oil phase production regulating valve 14; the outlet of the water phase production pump 15 is connected to the wastewater treatment device after passing through the water phase production flowmeter 16 and the water phase production regulating valve 17. After 24 hours, the upper oil phase material is taken for analysis, and the sodium ion content is 129ppm, and the sodium ion removal rate is 96.8%. Example 3
[0031] As in Example 1, the device of the present invention is used to treat the metallic sodium ions in the sodium-containing fuel oil produced as a byproduct of the co-oxidation process for producing propylene oxide. The acetic acid addition amount is controlled by the acetic acid flow meter 1 and the acetic acid regulating valve 2 at 200 kg / h, the pure water addition amount is controlled by the pure water flow meter 3 and the pure water regulating valve 4 at 1100 kg / h, and the fuel oil addition amount is controlled by the fuel oil flow meter 5 and the fuel oil regulating valve 6 at 4400 kg / h. The sodium ion content in the sodium-containing fuel oil is 4559 ppm. The above three materials are mixed uniformly in the static mixer and then enter the reaction extractor 8 for reaction extraction.
[0032] The reaction extractor 8 is provided with a stirrer 9 with a power of 15KW. The reaction extraction temperature is set to 80°C by 0.5MPa, 158°C steam. The stirring speed is set to 25r / min and the reaction extraction time is 1 hour.
[0033] The pressure of the reaction discharge pump 10 and the water phase production pump 15 was controlled to be 0.5 MPa, and the pressure of the oil phase production pump 12 was controlled to be 1.3 MPa.
[0034] The sample is taken from the outlet of the reactor discharge pump 10 and then separated into layers after standing, with the oil phase on the top and the water phase on the bottom.
[0035] The liquid phase material after the reaction is sent to the settling tank 11 by the reactor discharge pump 10 for settling and stratification. The settling tank 11 is provided with a steam heating coil inside, and a steam inlet and outlet are provided at the bottom of the settling tank 11. The material temperature in the settling tank 11 is maintained at 70°C by 0.5MPa and 158°C steam, and the pressure in the settling tank 11 is maintained at 6.0KPa by the gas phase balance pipeline inlet. The oil phase production outlet and the water phase production outlet of the settling tank are respectively connected to the oil phase production pump 12 and the water phase production pump 15. The outlet of the oil phase production pump 12 is connected to the incinerator after passing through the oil phase production flowmeter 13 and the oil phase production regulating valve 14; the outlet of the water phase production pump 15 is connected to the wastewater treatment device after passing through the water phase production flowmeter 16 and the water phase production regulating valve 17. After 24 hours, the upper oil phase material is taken for analysis, and the sodium ion content is 168ppm, and the sodium ion removal rate is 96.3%.
Claims
1. A device for removing sodium ions from sodium-containing fuel oil, characterized in that: The device comprises a static mixer (7), a reaction extractor (8), a reactor discharge pump (10), a settling tank (11), an oil phase extraction pump (12) and a water phase extraction pump (15) connected by chemical pipelines; the static mixer (7) is provided with an inlet and an outlet, and the pipelines for conveying sodium-containing fuel oil, pure water and acetic acid are connected to the inlet of the static mixer (7) after merging; the reaction extractor (8) is provided with a mixed material inlet on the side, a gas phase discharge port on the top and a liquid phase outlet on the bottom, and the mixed material inlet of the reaction extractor (8) is connected to the outlet of the static mixer (7); the reactor discharge pump (10) is provided with an inlet and an outlet, and the inlet of the reactor discharge pump (10) is connected to the liquid phase outlet of the reaction extractor (8); the settling tank (11) is provided with a gas phase balance pipeline inlet on the top, a liquid phase inlet on the side, and an oil phase extraction outlet and a liquid phase extraction outlet on the other side opposite to the liquid phase inlet. The position of the oil phase production port is higher than the position of the liquid phase production port, and the liquid phase inlet of the settling tank (11) is connected to the outlet of the reactor discharge pump (10); the oil phase production port and the water phase production port of the settling tank (11) are connected to the oil phase production pump (12) and the water phase production pump (15) respectively; in the reaction extractor (8), the sodium phenol carried in the sodium-containing fuel oil undergoes a replacement reaction with acetic acid to generate phenol and sodium acetate, and pure water is used as an extractant to dissolve the sodium acetate generated by the reaction in water to form acidic wastewater; a small amount of water evaporated by heat is discharged from the gas phase discharge port at the top of the reaction extractor (8), and the liquid phase after the reaction is discharged from the liquid phase outlet at the bottom of the reaction extractor (8) to the reactor discharge pump (10), and then sent to the settling tank (11) for static sedimentation and stratification, and the oil phase after sedimentation and stratification is sent to the incinerator through the oil phase production pump (12), and the water phase after sedimentation and stratification is sent to the wastewater treatment device through the water phase production pump (15).
2. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: An acetic acid flow meter (1) and an acetic acid regulating valve (2) are arranged on a pipeline for conveying acetic acid, a pure water flow meter (3) and a pure water regulating valve (4) are arranged on a pipeline for conveying pure water, and a fuel oil flow meter (5) and a fuel oil regulating valve (6) are arranged on a pipeline for conveying sodium-containing fuel oil; the amount of acetic acid added is controlled by the acetic acid flow meter (1) and the acetic acid regulating valve (2), the amount of pure water added is controlled by the pure water flow meter (3) and the pure water regulating valve (4), and the amount of sodium-containing fuel oil added is controlled by the fuel oil flow meter (5) and the fuel oil regulating valve (6).
3. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: The hollow pipeline of the static mixer (7) is provided with rotating blades and a stationary cylindrical body.
4. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: The pressure ranges of the reactor discharge pump (10) and the water phase production pump (15) are 0.4-0.6 MPa, and the pressure range of the oil phase production pump (12) is 1.2-1.4 MPa.
5. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: The reaction extractor (8) is provided with a steam heating jacket on the outside, and a steam inlet and a steam outlet are provided on the steam heating jacket; a two-layer double-blade stirrer (9) is provided inside the reaction extractor (8), and a flow baffle is provided on the inner wall; the reaction temperature of the reaction extractor (8) is controlled to be 75-85°C, the stirring speed is controlled to be 20-30 r / min, and the reaction extraction time is 1-3 hours.
6. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: A steam heating coil is provided inside the settling tank (11), and a steam inlet and outlet are provided at the bottom of the settling tank (11); the material temperature in the settling tank (11) is maintained at 65 to 75° C. by steam at 0.5 MPa and 155 to 160° C., and the pressure in the settling tank (11) is maintained at 5.0 to 7.0 KPa by the inlet of the gas phase balance pipeline.
7. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: The outlet of the oil phase extraction pump (12) is connected to the incinerator via an oil phase extraction flow meter (13) and an oil phase extraction regulating valve (14); the outlet of the water phase extraction pump (15) is connected to the wastewater treatment device via a water phase extraction flow meter (16) and a water phase extraction regulating valve (17).
8. A device for removing sodium ions from sodium-containing fuel oil as claimed in claim 1, characterized in that: The mass ratio of acetic acid, pure water and sodium-containing fuel oil is 1:5.5:20~24, the temperature of acetic acid and pure water is room temperature, and the temperature of sodium-containing fuel oil is 65~75℃.