Organic waste liquid inorganic reaction and desalination integrated device

Abstract

The present application relates to supercritical water reaction technical field, provide a kind of organic waste liquid inorganic reaction and desalination integration device, inner body is arranged in the inside of outer body, and first gap is left between inner body and outer body;Particle discharge device is connected with inner body and the outside of body;The inside of inner body is provided with outer water pipe and inner water pipe, and length is less than the length of inner body, second gap is left between outer water pipe and inner body, third gap is left between inner water pipe and outer water pipe, and the bottom of inner water pipe and outer water pipe is provided with corrosion-resistant plate;Inner body is provided with reactant inlet and reactant outlet;Outer body is provided with cooling water inlet and cooling water outlet.The present application can avoid salt precipitation to plug and corrode reactor and pipeline and equipment in rear end, reduce reactor cleaning salt and maintenance frequency, prolong the service life of main equipment to ensure the continuous and stable operation of supercritical water reactor, and then increase the processing efficiency of organic waste liquid.

Description

Technical Field

[0001] This invention relates to the field of supercritical water reaction technology, and more specifically, to an integrated device for inorganic reaction and desalination of organic waste liquid. Background Technology

[0002] Supercritical water oxidation technology is the most efficient technique for degrading organic matter. Under conditions of temperature above 374℃ and pressure above 22.1 MPa, oxygen and organic matter are mutually soluble, resulting in high reaction efficiency. It can completely oxidize organic matter into water, carbon dioxide, and inorganic salts.

[0003] Currently, supercritical water oxidation reactors are commonly used for the inorganic treatment of organic wastewater. However, since most salts have extremely low solubility under supercritical water conditions, conventional supercritical water oxidation reactors often experience salt precipitation when treating saline wastewater or wastewater that produces large amounts of salt after oxidation. This precipitation can lead to blockage at the reactor outlet, and the remaining salt solution can cause severe pipeline corrosion, requiring frequent desalination or pipeline maintenance. Consequently, the supercritical water oxidation reactor has poor continuous and stable operation capabilities, reducing the efficiency of organic wastewater treatment. Summary of the Invention

[0004] The problem addressed by this invention is how to improve the continuous operation capability of the reaction device, the reactor lifespan, and the efficiency of organic waste liquid treatment.

[0005] To address the aforementioned problems, this invention provides an integrated device for the inorganic reaction and desalination of organic waste liquid.

[0006] In a first aspect, the present invention provides an integrated device for inorganic reaction and desalination of organic waste liquid, comprising an inner body, an outer body, and a particle discharge device. The inner body is disposed inside the outer body, and a first gap is left between the inner body and the outer body, the first gap being used to fill cooling water. One end of the particle discharge device is connected to the particle discharge port of the inner body, and the other end is disposed outside the outer body.

[0007] The inner body is provided with an outer permeable pipe and an inner permeable pipe. The outer permeable pipe and the inner permeable pipe are of the same length and are shorter than the length of the inner body. A second gap is left between the outer permeable pipe and the inner body. The second gap is used to fill the salt-precipitating microsphere particles. The inner permeable pipe is located inside the outer permeable pipe. A third gap is left between the inner permeable pipe and the outer permeable pipe. The third gap is connected to the first gap. A corrosion-resistant plate is provided at the bottom of the inner permeable pipe and the outer permeable pipe. The corrosion-resistant plate has a through hole for connecting the inside of the inner permeable pipe and the second gap.

[0008] The inner body is provided with a reactant inlet and a reactant outlet, wherein one end of the reactant inlet is connected to the inner permeable pipe and the other end extends out of the outer body, and one end of the reactant outlet is connected to the second gap and the other end extends out of the outer body;

[0009] The outer body is provided with a cooling water inlet and a cooling water outlet.

[0010] Optionally, a first annular baffle and a second annular baffle are provided at intervals within the second gap. The first annular baffle is disposed on the inner wall of the inner body, and the second annular baffle is disposed on the outer wall of the outer permeable pipe. The projection portions of the first annular baffle on the second annular baffle overlap.

[0011] Optionally, both the first annular baffle and the second annular baffle are inclined downwards at an angle of 45 to 75 degrees.

[0012] Optionally, the integrated organic waste liquid inorganic reaction and desalination device further includes a separator and cleaner, which includes a shell and a sieve plate. The inlet of the shell is connected to the particle discharge device, and the sieve plate is disposed in the upper middle part of the shell.

[0013] The second gap is also filled with catalyst microspheres, the diameter of which is larger than that of the catalyst microspheres, and the diameter of the sieve holes on the sieve plate is larger than that of the catalyst microspheres but smaller than that of the salt precipitation microspheres.

[0014] Optionally, the housing is provided with a rinsing port and a brine outlet, wherein the rinsing port is located at the upper part of the housing and the brine outlet is located at the lower part of the housing.

[0015] Optionally, a salt precipitation microsphere outlet is provided on the shell near the sieve plate, and a catalyst microsphere outlet is provided at the lower part of the shell.

[0016] Optionally, the upper part of the housing is provided with an exhaust port, and a back pressure valve is provided at the exhaust port.

[0017] Optionally, a salt tray is provided at the bottom of the second gap, the salt tray being used to hold the salt precipitation microspheres and catalyst microspheres.

[0018] Optionally, the integrated organic waste liquid inorganic reaction and desalination device further includes an inlet / outlet pressure difference detector and an inner cavity temperature detector. The inlet / outlet pressure difference detector is used to detect the pressure difference between the reactant outlet and the reactor inner cavity, and the inner cavity temperature detector is used to detect the reaction temperature in the inner permeable pipe.

[0019] Optionally, the area where the corrosion-resistant plate overlaps with the inner permeable pipe is made of corrosion-resistant steel, and the area where the corrosion-resistant plate overlaps with the third gap is made of permeable material.

[0020] The beneficial effects of the integrated organic waste liquid inorganic reaction and desalination device of the present invention are as follows: It comprises an inner body, an outer body, and a particle discharge device. The inner body is located inside the outer body, with a first gap between them for filling with cooling water. An outer water permeable pipe and an inner water permeable pipe are located inside the inner body, with the inner water permeable pipe positioned inside the outer water permeable pipe. A third gap exists between the inner and outer water permeable pipes, communicating with the first gap to allow cooling water to flow through it. A reactant inlet is located on the inner body, with one end connected to the inner water permeable pipe and the other end extending out of the outer body. The outer and inner water permeable pipes are of the same length but shorter than the length of the inner body. A second gap exists between the outer water permeable pipe and the inner body, for filling with salt-precipitating microspheres. One end of the reactant outlet communicates with the second gap, and the other end extends out of the outer body. The bottom of both the inner and outer permeable pipes is fitted with corrosion-resistant plates. These plates have through-holes connecting the interior of the inner permeable pipe to the second gap. The corrosion-resistant plates effectively prevent corrosion from organic or inorganic waste liquids, increasing service life. The diameter of the through-holes in the corrosion-resistant plates is smaller than the diameter of the microspheres filling the second gap, ensuring that the organic waste liquid treated by supercritical water oxidation flows into the second gap while preventing the microspheres from flowing back into the inner permeable pipe. Cooling water flows into the inner permeable pipe through both the inner and outer permeable pipes. Due to the supercritical water oxidation reaction in the inner permeable pipe, the flowing cooling water continuously evaporates, forming a constantly flowing, low-temperature water film on the walls of both pipes, preventing salt precipitation and adhesion. One end of the particle discharge device is connected to the particle discharge port of the inner body, and the other end is located on the outside of the outer body. The outer body has a cooling water inlet and a cooling water outlet. In use, cooling water is first injected into the first and third gaps through the cooling water inlet, and the cooling water outlet is opened to generate cooling water circulation in the first and third gaps. At the same time, the inner permeable pipe, outer permeable pipe, inner body, and outer body divide the reaction zone and the salt precipitation zone. For example, catalysts and organic waste liquids are injected into the inner permeable pipe through the reactant inlet. The organic waste liquid undergoes a supercritical water oxidation reaction in the inner permeable pipe. The cooling water in the third gap enters the inner permeable pipe through the inner permeable pipe and enters the second gap through the outer permeable pipe. It absorbs the excess heat released by the supercritical water oxidation reaction and turns the permeable cooling water into supercritical water. A layer of low-temperature non-supercritical high-pressure water film that is always flowing will form on the permeable pipe wall to prevent salt precipitation and accumulation on the permeable pipe wall and to prevent corrosion of the permeable pipe wall.After primary treatment, the organic waste liquid flows through the corrosion-resistant plate into the second gap at the lower end of the inner and outer permeable pipes. The salt-precipitating microspheres installed in the second gap perform secondary treatment on the organic waste liquid after primary treatment, namely, salt precipitation treatment, before being discharged through the reactant outlet. The waste liquid after secondary treatment has a lower salt content, which effectively reduces the corrosion effect on the inner wall of the reactor body and the downstream pipes and equipment flowing through the second gap. In addition, the microspheres in the second gap adsorb the salt, preventing salt precipitation from clogging the reactor and the downstream pipes and equipment, reducing the number of times the reactor needs to be cleaned of salt and maintenance, ensuring the continuous and stable operation of the supercritical water reactor, and thus increasing the treatment efficiency and effect of the organic waste liquid. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the integrated organic waste liquid inorganic reaction and desalination device according to an embodiment of the present invention;

[0022] Figure 2 This is a partial top view of the integrated organic waste liquid inorganic reaction and desalination device according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Inner body; 11-Outer water permeable pipe; 12-Inner water permeable pipe; 13-Corrosion resistant plate; 14-Reactant inlet; 15-Reactant outlet; 16-Salt precipitation microspheres; 17-Catalyst microspheres; 18-Salt tray;

[0025] 2-Outer body; 21-Cooling water inlet; 22-Cooling water outlet;

[0026] 3-Particle discharge device;

[0027] 4-First annular baffle;

[0028] 5-Second annular baffle;

[0029] 6-Separator and cleaner; 61-Housing; 611-Rinsing port; 612-Brine outlet; 613-Salt precipitation microsphere outlet; 614-Catalyst microsphere outlet; 615-Exhaust port; 616-Back pressure valve; 62-Sieve plate;

[0030] 7-Differential pressure detector at entrance and exit;

[0031] 8-Inner cavity temperature detector. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0033] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0034] It should be noted that the terms "one" and "more" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] In related technologies, only a portion of the insoluble salts in supercritical water reactions precipitate out, such as K₂CO₃, K₃PO₄, K₂HPO₄, KH₂PO₄, NaNO₃, KNO₃, and Ca(NO₃)₂, which easily clog reactors and pipelines. Other salts, such as Na₂CO₃, Na₂SO₄, and Na₃PO₄, readily precipitate and adhere to the reactor's inner wall, causing corrosion and scaling, which can easily lead to blockages in outlet pipes. To address the corrosion or blockage of supercritical water oxidation reactors by saline wastewater or large amounts of salt-producing wastewater after oxidation, corrosion-resistant linings or pressure-resistant insulating materials are used on the reactor's inner wall. While this can improve the corrosion resistance of the supercritical reactor to some extent, it cannot separate the salts from the wastewater. The effluent remains highly corrosive to downstream pipelines and equipment, and the corrosion-resistant lining will wear down over time, requiring replacement or cleaning. Alternatively, filter components or mechanical scraping devices can be installed at the reactor outlet to clean the inorganic salts online. However, supercritical conditions place high demands on moving parts such as mechanical scrapers, resulting in low cost and weak continuous and stable operation. Furthermore, the brine still needs to be introduced into the subsequent system, leading to corrosion problems.

[0036] like Figure 1 As shown and Figure 2 To address the problems existing in the aforementioned related technologies, this embodiment provides an integrated device for inorganic reaction and desalination of organic waste liquid, including an inner body 1, an outer body 2, and a particle discharge device 3. The inner body 1 is disposed inside the outer body 2, and a first gap is left between the inner body 1 and the outer body 2, the first gap being used to fill cooling water; one end of the particle discharge device 3 is connected to the particle discharge port of the inner body 1, and the other end is disposed outside the outer body 2.

[0037] Specifically, the inner body 1 and the outer body 2 are cylindrical barrels. The cross-sectional diameter of the inner body 1 is smaller than that of the outer body 2. The inner body 1 and the outer body 2 are coaxially nested to form a jacketed reactor. A first gap is left between the inner body 1 and the outer body 2, and the first gap is filled with cooling water. The inner body 1 is filled with salt-precipitating microspheres 16, which are 1-3 mm in size and have uniformly arranged crystallization sites on their surface to adsorb inorganic salts in the organic waste liquid undergoing supercritical water oxidation. In order to discharge the salt-precipitating microspheres 16, a particle discharge device 3 is provided at the bottom of the inner body 1 and the outer body 2. One end of the device is connected to the particle discharge port of the inner body 1, and the other end is located outside the outer body 2. The particle discharge device 3 consists of a multi-functional valve group with adjustable switch and opening degree and an automatically opening and closing orifice plate. The valve and the orifice plate can be controlled separately to depressurize the inner body 1 and discharge the particles in the inner body 1 to the outside of the outer body 2.

[0038] The inner body 1 is provided with an outer permeable pipe 11 and an inner permeable pipe 12. The outer permeable pipe 11 and the inner permeable pipe 12 are of the same length and are shorter than the length of the inner body 1. A second gap is left between the outer permeable pipe 11 and the inner body 1. The inner permeable pipe 12 is disposed inside the outer permeable pipe 11. A third gap is left between the inner permeable pipe 12 and the outer permeable pipe 11. The third gap is connected to the first gap. A corrosion-resistant plate 13 is provided at the bottom of the inner permeable pipe 12 and the outer permeable pipe 11. The corrosion-resistant plate 13 has a through hole for connecting the interior of the inner permeable pipe 12 and the second gap.

[0039] The inner body 1 is provided with a reactant inlet 14 and a reactant outlet 15, wherein one end of the reactant inlet 14 is connected to the inner permeable pipe 12 and the other end extends out of the outer body 2, and one end of the reactant outlet 15 is connected to the second gap and the other end extends out of the outer body 2.

[0040] Specifically, the inner body 1 is equipped with an outer permeable pipe 11 and an inner permeable pipe 12 nested together. The inner permeable pipe 12 is located inside the outer permeable pipe 11, and the cross-sectional diameter of the inner permeable pipe 12 is smaller than that of the outer permeable pipe 11. A third gap is left between the inner permeable pipe 12 and the outer permeable pipe 11, and the third gap is connected to the first gap to allow cooling water to flow into the third gap. A corrosion-resistant plate 13 is provided at the bottom of the inner permeable pipe 12 and the outer permeable pipe 11. The corrosion-resistant plate 13 has through holes for connecting the interior of the inner permeable pipe 12 and the second gap. The corrosion-resistant plate 13 effectively prevents corrosion from organic or inorganic waste liquids, increasing its service life. At the same time, the diameter of the through holes in the corrosion-resistant plate 13 is smaller than the diameter of the microspheres filled in the second gap. This ensures that the organic waste liquid treated by the supercritical water oxidation reaction flows to the second gap, while also ensuring that the microspheres filled in the second gap do not flow back into the area of ​​the inner permeable pipe 12. It should be noted that the salt precipitation microspheres 16 can be scaled up or down according to the reactor design scale. It is preferred to use one-piece molded microspheres with uniform protrusions, uniform pits and uniform grooves on the surface. The material can be stainless steel, ceramics, etc., or natural rough particles such as irregular sand and gravel can be used instead.

[0041] The inner body 1 is provided with a reactant inlet 14 and a reactant outlet 15. Typically, there is one reactant inlet 14 and two reactant outlets 15. Figure 1 As shown in the diagram. One end of the reactant inlet 14 is connected to the inner permeable pipe 12 for injecting substances such as catalysts or organic waste liquids into the inner permeable pipe 12, so that the area in the inner permeable pipe 12 (e.g., Figure 1 In region A), a supercritical water oxidation reaction takes place. A second gap is left between the inner wall of the inner body 1 and the outer wall of the outer permeable pipe 11, such as... Figure 1 The device comprises regions C and B. The inner permeable pipe 12 and the outer permeable pipe 11 are of the same length, but shorter than the length of the inner body 1. A second gap (region B) exists between the bottom of the inner and outer permeable pipes 12 and the inner wall of the bottom of the inner body 1, used to hold the microsphere particles. One end of the reactant outlet 15 is connected to the second gap, and the other end extends out of the outer body 2. The reactant outlet 15 is used to discharge the treated inorganic waste liquid and to fill the salt-precipitating microsphere particles 16. When treating organic waste liquid, it is injected into the inner permeable pipe 12 (region A) through the reactant inlet 14 for supercritical water oxidation. Then, it flows into the second gap region B from the bottom of the permeable pipe for treatment such as salt precipitation or catalytic treatment. Finally, the treated inorganic waste liquid is discharged through the reactant outlet 15 via the second gap region C. This is an integrated organic waste liquid inorganic reaction and desalination device.

[0042] Alternatively, the inner permeable pipe 12 and the outer permeable pipe 11 can be integrally formed pipes with micron-level curved channels inside, or they can be formed by pressing and rolling multiple layers of mesh plates with different pore sizes. The water permeability of the outer permeable pipe 11 is always greater than that of the inner permeable pipe 12.

[0043] The outer body 2 is provided with a cooling water inlet 21 and a cooling water outlet 22. The cooling water inlet 21 is used to inject cooling water, and the cooling water outlet 22 is used to discharge cooling water. That is, during use, both the cooling water inlet 21 and the cooling water outlet 22 are used simultaneously to ensure real-time water circulation of the cooling water in the first gap, ensuring that the temperature of the cooling water in it remains low. Furthermore, filling the first gap with cooling water allows the outer wall of the inner body 1 to withstand only high pressure, significantly reducing the thickness of the reactor's outer wall and increasing the equipment's service life. The outer wall of the inner body 1 does not need to withstand high temperatures and corrosion, greatly reducing material requirements; stainless steel or high-strength steel can be used, significantly reducing the cost of the reactor.

[0044] In this embodiment, an inner body 1, an outer body 2, and a particle discharge device 3 are provided. The inner body 1 is disposed inside the outer body 2, and a first gap is left between the inner body 1 and the outer body 2. The first gap is used to fill cooling water. An outer water permeable pipe 11 and an inner water permeable pipe 12 are provided inside the inner body 1. The inner water permeable pipe 12 is disposed inside the outer water permeable pipe 11. A third gap is left between the inner water permeable pipe 12 and the outer water permeable pipe 11. The third gap is connected to the first gap so that cooling water can flow through the third gap. A reactant inlet 14 is provided on the inner body 1. One end of the reactant inlet 14 is connected to the inner water permeable pipe 12, and the other end extends out of the outer body 2. The outer water permeable pipe 11 and the inner water permeable pipe 12 are of the same length and are shorter than the length of the inner body 1. A second gap is left between the outer water permeable pipe 11 and the inner body 1. The second gap is used to fill salt precipitation microsphere particles 16. One end of the reactant outlet 15 is connected to the second gap, and the other end extends out of the outer body 2. A corrosion-resistant plate 13 is installed at the bottom of the inner permeable pipe 12 and the outer permeable pipe 11. The corrosion-resistant plate 13 has through holes for connecting the interior of the inner permeable pipe 12 and the second gap. The corrosion-resistant plate 13 effectively prevents corrosion from organic or inorganic waste liquids, increasing its service life. Simultaneously, the diameter of the through holes in the corrosion-resistant plate 13 is smaller than the diameter of the microspheres filled in the second gap, ensuring that the organic waste liquid treated by supercritical water oxidation flows to the second gap while preventing the microspheres filled in the second gap from flowing back into the area of ​​the inner permeable pipe 12. Cooling water flows into the inner permeable pipe 12 through the inner permeable pipe 12 and the outer permeable pipe 11. Due to the supercritical water oxidation reaction in the inner permeable pipe 12, the flowing cooling water continuously evaporates, forming a constantly flowing, low-temperature water film on the pipe walls of the inner permeable pipe 12 and the outer permeable pipe 11, preventing salt precipitation and adhesion to the inner permeable pipe 12 and the outer permeable pipe 11. One end of the particle discharge device 3 is connected to the particle discharge port of the inner body 1, and the other end is located on the outside of the outer body 2. The outer body 2 is provided with a cooling water inlet 21 and a cooling water outlet 22. In use, cooling water is first injected into the first gap and the third gap through the cooling water inlet 21, and the cooling water outlet 22 is opened to generate cooling water circulation in the first gap and the third gap. At the same time, the inner permeable pipe 12, the outer permeable pipe 11, the inner body 1 and the outer body 2 realize the partitioning of the reaction zone and the salt precipitation zone. For example, catalysts, organic waste liquids, etc. are injected into the inner permeable pipe 12 through the reactant inlet 14. The organic waste liquid undergoes a supercritical water oxidation reaction in the inner permeable pipe 12. The cooling water in the third gap enters the inner permeable pipe 12 through the inner permeable pipe 12 and enters the second gap through the outer permeable pipe 11. It absorbs the excess heat released by the supercritical water oxidation reaction, turns the permeable cooling water into supercritical water, and forms a layer of low-temperature non-supercritical high-pressure water film that is always flowing on the permeable pipe wall, preventing salt precipitation and accumulation on the permeable pipe wall and preventing corrosion of the permeable pipe wall.After initial treatment, the organic waste liquid flows through the corrosion-resistant plate 13 into the second gap at the lower end of the inner permeable pipe 12 and the outer permeable pipe 11. The salt-precipitating microspheres 16 installed in the second gap perform secondary treatment on the organic waste liquid after initial treatment, namely, salt precipitation treatment, and then discharge it through the reactant outlet 15. The waste liquid after secondary treatment has a lower salt content, which effectively reduces the corrosion effect on the inner wall of the inner body 1 in the second gap, as well as the pipes and equipment at the rear end. In addition, the microspheres in the second gap adsorb the salt, avoiding salt precipitation and clogging of the reactor and the pipes and equipment at the rear end, reducing the number of times the reactor needs to be cleaned of salt and maintenance, ensuring the continuous and stable operation of the supercritical water reactor, and thus increasing the treatment efficiency and effect of the organic waste liquid.

[0045] Optionally, such as Figure 1 As shown, a first annular baffle 4 and a second annular baffle 5 are spaced apart in the second gap. The first annular baffle 4 is disposed on the inner wall of the inner body 1, and the second annular baffle 5 is disposed on the outer wall of the outer permeable pipe 11. The projection portions of the first annular baffle 4 and the second annular baffle 5 overlap, that is, the distance between the end of the first annular baffle 4 away from the inner body 1 and the outer permeable pipe 11 is less than the width of the second annular baffle 5, or the distance between the end of the second annular baffle 5 away from the outer permeable pipe 11 and the inner body 1 is less than the width of the first annular baffle. This allows the treated inorganic waste liquid to flow through the second gap in a curved path, further intercepting the inorganic salts.

[0046] Optionally, both the first annular baffle 4 and the second annular baffle 5 are inclined downwards at an angle of 45 to 75 degrees to further improve the interception effect of inorganic salts.

[0047] Optionally, the integrated device for inorganic reaction and desalination of organic waste liquid further includes a separator and cleaner 6, which includes a housing 61 and a sieve plate 62. The inlet of the housing 61 is connected to the particle discharge device 3, and the sieve plate 62 is disposed in the middle of the housing 61.

[0048] The second gap is filled with salt-precipitating microspheres 16 and catalyst microspheres 17. The diameter of the salt-precipitating microspheres 16 is larger than that of the catalyst microspheres 17. The diameter of the sieve holes on the sieve plate 62 is larger than that of the catalyst microspheres 17 but smaller than that of the salt-precipitating microspheres 16.

[0049] Specifically, after the organic waste liquid is treated, the reactant inlet 14, reactant outlet 15, and cooling water outlet 22 are closed, the particle discharge device 3 is opened, and the valve group and pressure relief valve depressurize the reactor step by step. Then, the folded orifice plate is opened, and the salt microsphere particles are discharged with the help of the residual pressure of the reactor. Cooling water inlet 21 continuously injects cooling water into the outer body 2. The cooling water enters the second gap through the inner permeable pipe 12 and the outer permeable pipe 11 to clean it and remove residual salt, and dissolve the inorganic salt on the salt precipitated microsphere particles 16. The brine and salt precipitated microsphere particles 16 are discharged into the shell 61 of the separator-washer 6 through the particle discharge device 3. The sieve plate 62 removes the salt precipitated microsphere particles 16 and retains them in the upper part of the shell 61, which can be recycled as needed. The brine flows to the lower part of the shell 61 for discharge.

[0050] When the organic waste liquid contains recalcitrant organic matter, catalyst microspheres 17 are laid on the top layer of the salt-precipitating microspheres 16. The catalyst microspheres 17 are catalyst particles with micron or nanometer scales, and their size is usually smaller than that of the salt-precipitating microspheres 16. After the organic waste liquid undergoes secondary salt precipitation treatment, it flows through the catalyst microspheres 17, where the catalyst further promotes the oxidation of residual small molecules.

[0051] To distinguish between catalyst microspheres 17 and salt-precipitating microspheres 16, the diameter of the sieve holes in the sieve plate 62 is set to be larger than the diameter of catalyst microspheres 17 and smaller than the diameter of salt-precipitating microspheres 16, so that salt-precipitating microspheres 16 are screened out and retained in the upper part of the shell 61, while catalyst microspheres 17 are screened out to the lower part of the shell 61.

[0052] It should be noted that since the integrated device for inorganic reaction and desalination of organic waste liquid mainly desalinates the waste liquid after oxidation reaction, and further catalyzes the oxidation reaction on this basis, the number of salt precipitation microspheres 16 is much larger than that of catalyst microspheres 17. The sieve plate 62 is set in the middle and lower part of the shell 61 to reserve enough space for the salt precipitation microspheres 16 above the sieve plate 62.

[0053] Optionally, the housing 61 is provided with a rinsing port 611 and a brine outlet 612, wherein the rinsing port 611 is located at the upper part of the housing 61 and the brine outlet 612 is located at the lower part of the housing 61.

[0054] Optionally, a salt precipitation microsphere outlet 613 is provided on the housing 61 near the sieve plate 62, and a catalyst microsphere outlet 614 is provided at the lower part of the housing 61.

[0055] Specifically, compressed air is intermittently injected through the flushing port 611, disturbing the microspheres and causing the smaller catalyst microspheres 17 to fall through the sieve plate 62 into the lower part of the shell 61, thus achieving microsphere separation. The filtered brine flows out through the brine outlet 612, the salt-precipitated microspheres 16 are discharged through the salt-precipitated microsphere outlet 613, and the catalyst microspheres 17 are discharged through the catalyst microsphere outlet 614. It should be noted that the salt-precipitated microsphere outlet 613 and the catalyst microsphere outlet 614 can be connected to the reactant outlet 15. The washed salt-precipitated microspheres 16 and catalyst microspheres 17 can be refilled into the second gap for reuse.

[0056] Optionally, the upper part of the housing 61 is provided with an exhaust port 615, and a back pressure valve 616 is provided at the exhaust port 615, so that excess gas phase is discharged from the exhaust port 615 of the pipeline connected to the pressure relief valve.

[0057] Optionally, a replaceable salt tray 18 is provided at the bottom of the second gap. The salt tray 18 is flanged and connected to the inner wall of the inner body 1. It is used to hold the salt precipitation microspheres 16 and catalyst microspheres 17 to prevent the inorganic salts adsorbed by the salt precipitation microspheres 16 from corroding the inner wall of the inner body 1.

[0058] Optionally, the integrated organic waste liquid inorganic reaction and desalination device further includes an inlet / outlet pressure difference detector and an inner cavity temperature detector. The inlet / outlet pressure difference detector is used to detect the pressure difference between the reactant outlet and the reactor inner cavity, and the inner cavity temperature detector is used to detect the reaction temperature of the third gap.

[0059] Specifically, in the second gap, as the salt adsorbed by the salt microspheres 16 increases, the pressure difference of the reaction fluid with the same flow rate increases. The greater the pressure difference detected by the inlet and outlet pressure difference detector 7, the worse the reverse salt precipitation effect will be. At the same time, the reactor inlet pressure will be raised. When the pressure difference reaches 2MPa, the microspheres need to be regenerated, that is, the microspheres in the second gap need to be cleaned.

[0060] The internal temperature detector is used to detect the temperature of the supercritical water oxidation reaction in the internal permeable pipe 12, so as to control the operation of the integrated organic waste liquid inorganic reaction and desalination device.

[0061] Optionally, the area where the corrosion-resistant plate 13 overlaps with the inner permeable pipe 12 is made of corrosion-resistant steel, and the area where the corrosion-resistant plate 13 overlaps with the third gap is made of permeable material.

[0062] Specifically, the corrosion-resistant plate 13 may be made of, but is not limited to, nickel-based alloys, Hastelloy, permeable materials, etc.

[0063] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An integrated device for inorganic reaction and desalination of organic waste liquid, characterized in that, It includes an inner body (1), an outer body (2) and a particle discharge device (3). The inner body (1) is disposed inside the outer body (2), and a first gap is left between the inner body (1) and the outer body (2), the first gap being used to fill cooling water. One end of the particle discharge device (3) is connected to the particle discharge port of the inner body (1), and the other end is disposed outside the outer body (2). The inner body (1) is provided with an outer permeable pipe (11) and an inner permeable pipe (12). The outer permeable pipe (11) and the inner permeable pipe (12) are of the same length and are shorter than the length of the inner body (1). A second gap is left between the outer permeable pipe (11) and the inner body (1). The second gap is used to fill the salt-precipitating microsphere particles (16). The inner permeable pipe (12) is located inside the outer permeable pipe (11). A third gap is left between the inner permeable pipe (12) and the outer permeable pipe (11). The third gap is connected to the first gap. A corrosion-resistant plate (13) is provided at the bottom of the inner permeable pipe (12) and the outer permeable pipe (11). A through hole is opened on the corrosion-resistant plate (13) to connect the inside of the inner permeable pipe (12) and the second gap. The inner permeable pipe (12) is used for supercritical water oxidation reaction. The inner body (1) is provided with a reactant inlet (14) and a reactant outlet (15), wherein one end of the reactant inlet (14) is connected to the inner permeable pipe (12) and the other end extends out of the outer body (2), and one end of the reactant outlet (15) is connected to the second gap and the other end extends out of the outer body (2). The outer body (2) is provided with a cooling water inlet (21) and a cooling water outlet (22).

2. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 1, characterized in that, The second gap is provided with a first annular baffle (4) and a second annular baffle (5) at intervals. The first annular baffle (4) is provided on the inner wall of the inner body (1), and the second annular baffle (5) is provided on the outer wall of the outer permeable pipe (11). The projection of the first annular baffle (4) on the second annular baffle (5) overlaps.

3. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 2, characterized in that, Both the first annular baffle (4) and the second annular baffle (5) are inclined downwards, with an inclination angle of 45 to 75 degrees.

4. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 1, characterized in that, It also includes a separator cleaner (6), which includes a housing (61) and a sieve plate (62). The inlet of the housing (61) is connected to the particle discharge device (3), and the sieve plate (62) is disposed in the middle of the housing (61). The second gap is also filled with catalyst microspheres (17), the diameter of the salt precipitation microspheres (16) is larger than that of the catalyst microspheres (17), and the diameter of the sieve holes on the sieve plate (62) is larger than that of the catalyst microspheres (17) and smaller than that of the salt precipitation microspheres (16).

5. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 4, characterized in that, The housing (61) is provided with a rinsing port (611) and a brine outlet (612), wherein the rinsing port (611) is located at the upper part of the housing (61) and the brine outlet (612) is located at the lower part of the housing (61).

6. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 4, characterized in that, A salt precipitation microsphere outlet (613) is provided on the shell (61) near the sieve plate (62), and a catalyst microsphere outlet (614) is provided at the lower part of the shell (61).

7. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 4, characterized in that, The upper part of the housing (61) is provided with an exhaust port (615), and a back pressure valve (616) is provided at the exhaust port (615).

8. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 4, characterized in that, A salt tray (18) is provided at the bottom of the second gap, which is used to hold the salt precipitation microspheres (16) and catalyst microspheres (17).

9. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 1, characterized in that, It also includes an inlet / outlet pressure differential detector (7) and an inner cavity temperature detector (8). The inlet / outlet pressure differential detector (7) is used to detect the pressure difference between the reactant outlet (15) and the reactor inner cavity, and the inner cavity temperature detector (8) is used to detect the reaction temperature in the inner permeable pipe (12).

10. The integrated device for inorganic reaction and desalination of organic waste liquid according to claim 1, characterized in that, The area where the corrosion-resistant plate (13) overlaps with the inner permeable pipe (12) is made of corrosion-resistant steel, and the area where the corrosion-resistant plate (13) overlaps with the third gap is made of permeable material.

Images