Tubular evaporation wall reactor

Abstract

The invention provides a tubular evaporation wall reactor, and relates to the technical field of supercritical water oxidation reactors, the tubular evaporation wall reactor comprises a reactor cylinder, a lining sleeve, an upper cover and a lower cover, the lining sleeve is formed by sintering a porous material, the lining sleeve is arranged in the reactor cylinder, and the upper cover and the lower cover are arranged in the reactor cylinder. A gap is reserved between the outer wall of the lining sleeve and the inner wall of the reactor barrel, the upper cover and the lower cover are connected to the two open ends of the reactor barrel in a sealed mode respectively, and the two ends of the lining sleeve abut against the upper cover and the lower cover respectively; a space defined by the lining sleeve and the reactor cylinder is an outer cavity, and the inner space of the lining sleeve is an inner cavity. Compared with the prior art, the tubular evaporation wall reactor has the advantages that a high-corrosion medium in a reaction area can be prevented from entering the outer cavity to be in contact with the wall surface of the reactor barrel, salt-containing fluid in the reaction area can be prevented from separating out organic salt on the wall surface of the lining sleeve, and the problems of corrosion of the inner wall of the reactor barrel and salt deposition of the lining sleeve are solved.

Description

Technical Field

[0001] The invention relates to the technical field of supercritical water oxidation reactors, in particular to a tubular evaporation wall reactor. Background Art

[0002] Supercritical water oxidation technology is an advanced treatment technology that uses supercritical water environment to efficiently oxidize and degrade organic waste. This technology uses the special properties of water in a supercritical state to completely dissolve oxidants and organic matter in supercritical water and undergo a homogeneous oxidation reaction, quickly and thoroughly converting organic matter into harmless small molecular compounds such as CO2, N2, and H2O, chlorine into metal salts of chloride ions, nitro compounds into nitrogen, sulfur into sulfates, and phosphorus into phosphates.

[0003] The core equipment of supercritical water oxidation technology is a reactor with high temperature, high pressure, high salt concentration and high oxygen concentration. Under this harsh reaction condition, the outstanding problems faced by the existing supercritical water oxidation reactor are heat release control, material corrosion and salt deposition blockage. Processing materials with high organic content is a necessary condition for supercritical water oxidation technology to maintain autothermal reaction. The oxidation reaction of high-concentration organic matter will release heat violently and produce local high temperature. Excessive temperature will reduce the pressure bearing capacity of the material and cause high-temperature corrosion. High oxygen and high salt concentrations (such as halogen ions or phosphate ions) in high temperature and high pressure environments will cause serious corrosion of service materials, and passively improving corrosion resistance by improving the corrosion resistance level of the material will lead to high manufacturing costs. The solubility of inorganic salts under supercritical water conditions is extremely low, and the precipitated inorganic salts will also cause blockage in the reactor, causing the system to overpressure and cause safety accidents or shutdowns.

[0004] At present, supercritical water oxidation reactors usually use tubular reactors, which are easy to manufacture and conducive to industrial scale-up. However, the single structure is not conducive to the setting of anti-corrosion and anti-salt deposition structures. It is only suitable for large-scale industrialization and weakly corrosive and low-salt materials. If the processing volume is large, the organic matter concentration is high and the salt content is high, local high temperature, material corrosion and salt deposition blockage will occur, which will seriously affect the safety and stable operation of the reactor. Summary of the invention

[0005] The present invention aims to solve at least one of the above technical problems.

[0006] The present invention provides a tubular evaporative wall reactor, comprising: a reactor barrel, an inner liner sleeve, an upper cover and a lower cover, wherein the inner liner sleeve is sintered from a porous material, is arranged in the reactor barrel, and a gap is left between the outer wall of the inner liner sleeve and the inner wall of the reactor barrel, the upper cover and the lower cover are respectively sealed and connected to the two open ends of the reactor barrel, and the two ends of the inner liner sleeve are respectively abutted against the upper cover and the lower cover; the space enclosed by the inner liner sleeve and the reactor barrel is an outer cavity, and the internal space of the inner liner sleeve is an inner cavity, wherein the outer cavity is used to inject low-temperature cooling water with a pressure higher than that of the inner cavity, and the inner cavity is used to inject organic waste liquid and an oxidant.

[0007] The tubular evaporation wall reactor provided by the present invention has, compared with the prior art, the following beneficial effects but not limited to:

[0008] The tubular evaporation wall reactor of the present invention is installed by first sealingly connecting the lower cover to the lower open end of the reactor cylinder, then placing the liner sleeve into the reactor cylinder, and finally sealingly connecting the upper cover to the upper open end of the reactor cylinder. The sealing requirement is achieved through the sealing connection of the upper cover and the lower cover, that is, when the reactor is in operation, the cooling water in the outer cavity is only allowed to penetrate into the inner cavity through the pores of the liner sleeve, and is not allowed to flow out from the upper and lower ends of the liner sleeve. When in use, the organic waste liquid and the oxidant are injected into the inner cavity of the liner sleeve, and a supercritical water oxidation reaction is carried out in the central area of ​​the inner cavity, thereby generating a harmless high-temperature salt-containing fluid. Low-temperature cooling water with a pressure higher than the inner cavity pressure is injected into the gap between the outer wall of the liner sleeve and the inner wall of the reactor cylinder, that is, the space (outer cavity) enclosed by the liner sleeve and the reactor cylinder. While reducing the wall temperature of the reactor cylinder, the liner sleeve sintered by porous material penetrates into the inner cavity of the liner sleeve and forms a stable subcritical water film on the inner wall of the liner sleeve. The water film can prevent the highly corrosive medium in the reaction zone (inner cavity) from entering the outer cavity and contacting the wall of the reactor cylinder and can avoid the salt-containing fluid in the reaction zone from precipitating organic salts on the wall of the liner sleeve, thereby solving the problems of corrosion of the inner wall of the reactor cylinder and salt deposition of the liner sleeve.

[0009] Optionally, a first sealing gasket is provided between the lower end of the liner sleeve and the lower cover, and a second sealing gasket is provided between the upper end of the liner sleeve and the upper cover.

[0010] Optionally, the tubular evaporator wall reactor further comprises a first positioning plate, a first liner ring and a third sealing gasket, wherein the first positioning plate is arranged on the end face of the lower cover facing the inner liner sleeve, the first sealing gasket is sleeved on the first positioning plate, the first liner ring is sleeved on the first positioning plate, and the outer circumferential surface of the first liner ring facing away from the first positioning plate abuts against the inner wall of the reactor cylinder, the end face of the first sealing gasket facing away from the lower cover abuts against the first liner ring, the lower end of the inner liner sleeve abuts against the first liner ring, and the third sealing gasket is arranged between the lower end of the inner liner sleeve and the first liner ring.

[0011] Optionally, the tubular evaporator wall reactor further comprises a second positioning plate, a second lining ring and a fourth sealing gasket, wherein the second positioning plate is arranged on the end surface of the upper cover facing the inner lining sleeve, the second sealing gasket is sleeved on the second positioning plate, the second lining ring is sleeved on the second positioning plate, and the outer circumferential surface of the second lining ring facing away from the second positioning plate abuts against the inner wall of the reactor cylinder, the end surface of the second sealing gasket facing away from the lower cover abuts against the first lining ring, the upper end of the inner lining sleeve abuts against the second lining ring, and the fourth sealing gasket is arranged between the upper end of the inner lining sleeve and the second lining ring.

[0012] Optionally, the tubular evaporation wall reactor further comprises a first bolt, a first nut, a first pressure ring and a fifth sealing gasket. A first threaded hole is provided at one end of the reactor cylinder close to the lower cover, a first connecting hole is provided on the first pressure ring, the first pressure ring and the fifth sealing gasket are both sleeved on the lower cover, the first bolt is used to pass through the first connecting hole and be connected to the first threaded hole, the first nut is connected to the first bolt, and the first nut is used to be screwed toward the direction close to the first pressure ring to press the fifth sealing gasket between the first pressure ring and the reactor cylinder.

[0013] Optionally, the tubular evaporator wall reactor further comprises a second bolt, a second nut, a second pressure ring and a sixth sealing gasket. A second threaded hole is provided at one end of the reactor cylinder close to the upper cover, a second connecting hole is provided on the second pressure ring, the second pressure ring and the sixth sealing gasket are both sleeved on the upper cover, the second bolt is used to pass through the second connecting hole and be connected to the second threaded hole, the second nut is connected to the second bolt, and the second nut is used to be screwed toward the direction close to the second pressure ring to press the sixth sealing gasket between the second pressure ring and the reactor cylinder.

[0014] Optionally, the tubular evaporative wall reactor further comprises a thermocouple tube, a portion of which passes through the upper cover and extends into the inner cavity, and another portion of which is located outside the reactor cylinder.

[0015] Optionally, the tubular evaporating wall reactor further comprises a pressure gauge connecting pipe, a portion of which passes through the upper cover and extends into the inner cavity, and another portion of which is located outside the reactor cylinder.

[0016] Optionally, the tubular evaporative wall reactor further comprises a water injection pipe, a portion of which passes through the upper cover and extends into the outer cavity, and another portion of which is located outside the reactor cylinder.

[0017] Optionally, the tubular evaporative wall reactor further comprises a discharge pipe, a portion of which passes through the lower cover and communicates with the inner cavity, and another portion of which is located outside the reactor cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a tubular evaporation wall reactor according to an embodiment of the present invention;

[0019] Figure 2 It is a partial view of a tubular evaporative wall reactor according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1. Reactor cylinder; 2. Liner sleeve; 3. Upper cover; 4. Lower cover; 5. First gasket; 6. Second gasket; 7. First positioning plate; 8. First liner ring; 9. Third gasket; 10. First bolt; 11. First nut; 12. First pressure ring; 13. Fifth gasket; 14. Thermocouple tube; 15. Pressure gauge connecting pipe; 16. Water injection pipe; 17. Discharge pipe; 100. Outer cavity; 200. Inner cavity. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the description of the present invention, the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0026] Moreover, the Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the top, and the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis) represents the bottom.

[0027] It should also be noted that the aforementioned Z-axis representation is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figures 1 to 2 As shown, the tubular evaporative wall reactor of the embodiment of the present invention comprises: a reactor barrel 1, an inner liner sleeve 2, an upper cover 3 and a lower cover 4, wherein the inner liner sleeve 2 is sintered from a porous material, the inner liner sleeve 2 is arranged in the reactor barrel 1, and a gap is left between the outer wall of the inner liner sleeve 2 and the inner wall of the reactor barrel 1, the upper cover 3 and the lower cover 4 are respectively sealed and connected to the two open ends of the reactor barrel 1, and the two ends of the inner liner sleeve 2 are respectively abutted against the upper cover 3 and the lower cover 4; the space enclosed by the inner liner sleeve 2 and the reactor barrel 1 is an outer cavity 100, and the internal space of the inner liner sleeve 2 is an inner cavity 200, wherein the outer cavity 100 is used to inject low-temperature cooling water with a pressure higher than that of the inner cavity 200, and the inner cavity 200 is used to inject organic waste liquid and oxidant.

[0029] In this embodiment, combined with the attached Figure 1As shown, during installation, the lower cover 4 is first sealed and connected to the lower open end of the reactor cylinder 1, and then the liner sleeve 2 is placed in the reactor cylinder 1, and finally the upper cover 3 is sealed and connected to the upper open end of the reactor cylinder 1. The sealing requirement is achieved through the sealed connection between the upper cover 3 and the lower cover 4, that is, when the reactor is running, the cooling water in the outer cavity 100 is only allowed to penetrate into the inner cavity 200 through the pores of the liner sleeve 2, and is not allowed to penetrate from the upper and lower ends of the liner sleeve 2 (attached Figure 1 When in use, the organic waste liquid and the oxidant are injected into the inner cavity 200 of the liner sleeve 2, and the supercritical water oxidation reaction is carried out in the central area of ​​the inner cavity 200, thereby generating harmless high-temperature saline fluid. Low-temperature cooling water with a pressure higher than that of the inner cavity 200 is injected into the gap between the outer wall of the liner sleeve 2 and the inner wall of the reactor barrel 1, that is, the space (outer cavity 100) surrounded by the liner sleeve and the reactor barrel. While reducing the wall temperature of the reactor barrel 1, the liner sleeve 2 sintered by the porous material penetrates into the inner cavity 200 of the liner sleeve 2 and forms a layer of stable subcritical water film on the inner wall of the liner sleeve 2. The water film can prevent the highly corrosive medium in the reaction zone (inner cavity 200) from entering the outer cavity 100 and contacting the wall of the reactor barrel 1, and can prevent the reaction zone salt-containing fluid from precipitating organic salts on the wall of the liner sleeve 2, thereby solving the corrosion of the inner wall of the reactor barrel 1 and the salt deposition of the liner sleeve 2.

[0030] Optionally, a first sealing gasket 5 is provided between the lower end of the liner sleeve 2 and the lower cover 4 , and a second sealing gasket 6 is provided between the upper end of the liner sleeve 2 and the upper cover 3 .

[0031] In this embodiment, combined with the attached Figure 1 As shown, at the lower end of the liner sleeve 2 (attached Figure 1 A first sealing gasket 5 is arranged between the lower cover 4 and the inner liner sleeve 2 (in the opposite direction of the center Z axis), and a second sealing gasket 6 is arranged between the upper end of the inner liner sleeve 2 and the upper cover 3, wherein the first sealing gasket 5 and the second sealing gasket 6 are used to ensure that cooling water can only penetrate into the inner cavity 200 through the inner liner sleeve 2 sintered by porous material.

[0032] It should be noted that, since the reactor is a high-temperature and high-pressure reactor, the selection of the first gasket 5 and the second gasket 6 can meet the sealing requirements of high-temperature and highly corrosive media while being able to compensate for the sealing relaxation caused by the temperature difference between the reactor barrel 1 (made of low-alloy steel) and the liner sleeve 2 (made of nickel-based porous and titanium porous) and the deformation caused by the internal pressure of the reactor. Therefore, the first gasket 5 and the second gasket 6 are preferably stainless steel-coated graphite gaskets, and the effective rebound amount of the gasket can ensure the sealing requirements at high temperatures.

[0033] Optionally, the tubular evaporator wall reactor further comprises a first positioning plate 7, a first liner ring 8 and a third sealing gasket 9, wherein the first positioning plate 7 is arranged on the end face of the lower cover 4 facing the inner liner sleeve 2, the first sealing gasket 5 is sleeved on the first positioning plate 7, the first liner ring 8 is sleeved on the first positioning plate 7, and the outer circumferential surface of the first liner ring 8 facing away from the first positioning plate 7 abuts against the inner wall of the reactor cylinder 1, the end face of the first sealing gasket 5 facing away from the lower cover 4 abuts against the first liner ring 8, the lower end of the inner liner sleeve 2 abuts against the first liner ring 8, and the third sealing gasket 9 is arranged between the lower end of the inner liner sleeve 2 and the first liner ring 8.

[0034] Specifically, in combination with Figure 1 As shown, the first positioning plate 7 can be connected to the end face of the lower cover 4 facing the inner liner sleeve 2 by welding, the first positioning plate 7 can be an annular structure, or the first positioning plate 7 can be a plurality of block structures, and the plurality of block structures are arranged in a ring shape on the lower cover 4, and an inclined surface is provided on the first positioning plate 7 to facilitate the installation of the first sealing gasket 5 and the first liner ring 8, and the first liner ring 8 is located above the first sealing gasket 5, and the first liner ring 8 is in contact with the first sealing gasket 5, the lower end of the inner liner sleeve 2 abuts against the first liner ring 8, and the third sealing gasket 9 is arranged between the lower end of the inner liner sleeve 2 and the first liner ring 8.

[0035] In this embodiment, combined with the attached Figure 1 As shown, the liner sleeve 2 is sintered by porous materials. Due to the limitation of manufacturing capacity, the thickness of the liner sleeve 2 cannot meet the minimum sealing width requirement of the first sealing gasket 5, and it is easy to crush the first sealing gasket 5 and cause sealing failure. Therefore, a first liner ring 8 is added to the lower part of the liner sleeve 2 to increase the contact width of the first sealing gasket 5 (stainless steel coated graphite gasket). A third sealing gasket 9 (for example, a metal sealing gasket) is added between the lower end of the liner sleeve 2 and the first liner ring 8 to seal the first liner ring 8 with the lower end of the liner sleeve 2. The first liner ring 8 can not only increase the contact width of the first sealing gasket 5, but also play a positioning and guiding role when installing the liner sleeve 2.

[0036] Optionally, the tubular evaporator wall reactor further comprises a second positioning plate, a second lining ring and a fourth sealing gasket, wherein the second positioning plate is arranged on the end face of the upper cover 3 facing the inner lining sleeve 2, the second sealing gasket 6 is sleeved on the second positioning plate, the second lining ring is sleeved on the second positioning plate, and the outer circumferential surface of the second lining ring facing away from the second positioning plate abuts against the inner wall of the reactor cylinder 1, the end face of the second sealing gasket 6 facing away from the lower cover 4 abuts against the first lining ring 8, the upper end of the inner lining sleeve 2 abuts against the second lining ring, and the fourth sealing gasket is arranged between the upper end of the inner lining sleeve 2 and the second lining ring.

[0037] Specifically, the upper seal of the reactor is the same as the lower seal structure mentioned above (not shown in the figure). Specifically, the second positioning plate can be connected to the end face of the upper cover 3 facing the inner liner sleeve 2 by welding. The second positioning plate can be an annular structure, or the second positioning plate can be a plurality of block structures, and the plurality of block structures are arranged in a ring shape on the upper cover 3. An inclined surface is provided on the second positioning plate to facilitate the installation of the second sealing gasket 6 and the second liner ring, and the second liner ring is located below the second sealing gasket 6, and the second liner ring is in contact with the second sealing gasket 6. The upper end of the inner liner sleeve 2 abuts against the second liner ring, and the fourth sealing gasket is arranged between the upper end of the inner liner sleeve 2 and the second liner ring.

[0038] In this embodiment, the liner sleeve 2 is sintered by porous materials. Due to the limitation of manufacturing capacity, the thickness of the liner sleeve 2 cannot meet the minimum sealing width requirement of the second gasket 6, and it is easy to crush the second gasket 6 and cause sealing failure. Therefore, a second liner ring is added to the upper part of the liner sleeve 2 to increase the contact width of the second gasket 6 (stainless steel coated graphite gasket). A fourth gasket (such as a metal sealing gasket) is added between the upper end of the liner sleeve 2 and the second liner ring to seal the second liner ring and the upper end of the liner sleeve 2. The second liner ring can not only increase the contact width of the second gasket 6, but also play a positioning and guiding role when installing the liner sleeve 2.

[0039] Optionally, the tubular evaporation wall reactor further includes a first bolt 10, a first nut 11, a first pressure ring 12 and a fifth sealing gasket 13. A first threaded hole is provided at one end of the reactor barrel 1 close to the lower cover 4, and a first connecting hole is provided on the first pressure ring 12. The first pressure ring 12 and the fifth sealing gasket 13 are both sleeved on the lower cover 4. The first bolt 10 is used to pass through the first connecting hole and be connected to the first threaded hole. The first nut 11 is connected to the first bolt 10, and the first nut 11 is used to be screwed toward the direction close to the first pressure ring 12 to press the fifth sealing gasket 13 between the first pressure ring 12 and the reactor barrel 1.

[0040] In this embodiment, combined with the attached Figure 1As shown, the connection between the upper cover 3 and the lower cover 4 and the reactor cylinder 1 can be hydraulically serrated threaded, and the sealing of the lower outer cylindrical surface of the reactor cylinder 1 is achieved by the first bolt 10, the first nut 11, the first pressure ring 12 and the fifth sealing gasket 13. Specifically, the fifth sealing gasket 13 and the first pressure ring 12 are first sleeved on the lower cover 4, and then the first bolt 10 is passed through the first connection hole on the first pressure ring 12 and connected to the first threaded hole at one end of the reactor cylinder 1 close to the lower cover 4, and finally the first nut 11 is connected to the first bolt 10, and the first nut 11 is screwed toward the direction close to the first pressure ring 12 to press the fifth sealing gasket 13 between the first pressure ring 12 and the reactor cylinder 1, that is, a pre-tightening force is applied to the fifth sealing gasket 13 to achieve the sealing requirement.

[0041] Optionally, the tubular evaporation wall reactor further includes a second bolt, a second nut, a second pressure ring and a sixth sealing gasket. A second threaded hole is provided at one end of the reactor barrel 1 close to the upper cover 3, and a second connecting hole is provided on the second pressure ring. The second pressure ring and the sixth sealing gasket are both sleeved on the upper cover 3. The second bolt is used to pass through the second connecting hole and be connected to the second threaded hole. The second nut is connected to the second bolt, and the second nut is used to be screwed toward the direction close to the second pressure ring to press the sixth sealing gasket between the second pressure ring and the reactor barrel 1.

[0042] In this embodiment, combined with the attached Figure 1 As shown, the connection between the upper cover 3 and the lower cover 4 and the reactor barrel 1 can be hydraulically serrated threaded, and the sealing of the upper outer cylindrical surface of the reactor barrel 1 is achieved by the second bolt, the second nut, the second pressure ring and the sixth sealing gasket. Specifically, the sixth sealing gasket and the second pressure ring are first sleeved on the upper cover 3, and then the second bolt is passed through the second connection hole on the second pressure ring and connected to the second threaded hole opened at one end of the reactor barrel 1 close to the upper cover 3, and finally the second nut is connected to the second bolt, and the second nut is screwed toward the direction close to the second pressure ring to press the sixth sealing gasket between the second pressure ring and the reactor barrel 1, that is, a pre-tightening force is applied to the sixth sealing gasket to meet the sealing requirements.

[0043] Optionally, the tubular evaporative wall reactor further includes a thermocouple tube 14 , a portion of which passes through the upper cover 3 and extends into the inner cavity 200 , and another portion of which is located outside the reactor cylinder 1 .

[0044] In this embodiment, combined with the attached Figure 1 As shown, a portion of the thermocouple tube 14 passes through the upper cover 3 and extends into the inner cavity 200 , and another portion is located outside the reactor cylinder 1 . The thermocouple tube 14 is used to detect the real-time temperature in the inner cavity 200 .

[0045] Optionally, the tubular evaporating wall reactor further includes a pressure gauge connecting pipe 15 , a portion of which passes through the upper cover 3 and extends into the inner cavity 200 , and another portion of which is located outside the reactor cylinder 1 .

[0046] In this embodiment, combined with the attached Figure 1 As shown, a portion of the pressure gauge connecting pipe 15 passes through the upper cover 3 and extends into the inner cavity 200 , and another portion is located outside the reactor cylinder 1 . The pressure gauge connecting pipe 15 is used to detect the real-time pressure in the inner cavity 200 .

[0047] Optionally, the tubular evaporative wall reactor further includes a water injection pipe 16 , a portion of which passes through the upper cover 3 and extends into the outer cavity 100 , and another portion of which is located outside the reactor cylinder 1 .

[0048] In this embodiment, combined with the attached Figure 1 As shown, one or more water injection pipes 16 may be provided, wherein a portion of the water injection pipe 16 passes through the upper cover 3 and extends into the outer cavity 100 , and another portion is located outside the reactor cylinder 1 , and the water injection pipe 16 is used to inject low-temperature cooling water with a pressure higher than that of the inner cavity into the outer cavity 100 .

[0049] Optionally, the tubular evaporative wall reactor further includes a discharge pipe 17 , a portion of which passes through the lower cover 4 and communicates with the inner cavity 200 , and another portion of which is located outside the reactor cylinder 1 .

[0050] In this embodiment, combined with the attached Figure 1 As shown, a portion of the discharge pipe 17 passes through the lower cover 4 and communicates with the inner cavity 200 , and another portion is located outside the reactor cylinder 1 . The discharge pipe 17 is used to discharge the medium in the inner cavity 200 .

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0052] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A tubular evaporative wall reactor, characterized in that: include: A reactor cylinder (1), an inner liner sleeve (2), an upper cover (3) and a lower cover (4), wherein the inner liner sleeve (2) is sintered from a porous material, the inner liner sleeve (2) is arranged in the reactor cylinder (1), and a gap is left between the outer wall of the inner liner sleeve (2) and the inner wall of the reactor cylinder (1), the upper cover (3) and the lower cover (4) are respectively sealed and connected to the two open ends of the reactor cylinder (1), and the two ends of the inner liner sleeve (2) are respectively abutted against the upper cover (3) and the lower cover (4); the space enclosed by the inner liner sleeve (2) and the reactor cylinder (1) is an outer cavity (100), and the internal space of the inner liner sleeve (2) is an inner cavity (200), wherein the outer cavity (100) is used to inject low-temperature cooling water with a pressure higher than that of the inner cavity (200), and the inner cavity (200) is used to inject organic waste liquid and an oxidant.

2. The tubular evaporative wall reactor according to claim 1, characterized in that: A first sealing gasket (5) is provided between the lower end of the inner lining sleeve (2) and the lower cover (4), and a second sealing gasket (6) is provided between the upper end of the inner lining sleeve (2) and the upper cover (3).

3. The tubular evaporative wall reactor according to claim 2, characterized in that: It also includes a first positioning plate (7), a first liner ring (8) and a third sealing gasket (9), wherein the first positioning plate (7) is arranged on the end surface of the lower cover (4) facing the inner liner sleeve (2), the first sealing gasket (5) is sleeved on the first positioning plate (7), the first liner ring (8) is sleeved on the first positioning plate (7), and the outer circumferential surface of the first liner ring (8) facing away from the first positioning plate (7) abuts against the inner wall of the reactor cylinder (1), the end surface of the first sealing gasket (5) facing away from the lower cover (4) abuts against the first liner ring (8), the lower end of the inner liner sleeve (2) abuts against the first liner ring (8), and the third sealing gasket (9) is arranged between the lower end of the inner liner sleeve (2) and the first liner ring (8).

4. The tubular evaporative wall reactor according to claim 3, characterized in that: It also includes a second positioning plate, a second liner ring and a fourth sealing gasket, wherein the second positioning plate is arranged on the end surface of the upper cover (3) facing the inner liner sleeve (2), the second sealing gasket (6) is sleeved on the second positioning plate, the second liner ring is sleeved on the second positioning plate, and the outer circumferential surface of the second liner ring facing away from the second positioning plate abuts against the inner wall of the reactor cylinder (1), the end surface of the second sealing gasket (6) facing away from the lower cover (4) abuts against the first liner ring (8), the upper end of the inner liner sleeve (2) abuts against the second liner ring, and the fourth sealing gasket is arranged between the upper end of the inner liner sleeve (2) and the second liner ring.

5. The tubular evaporative wall reactor according to claim 1, characterized in that: The reactor body (1) further comprises a first bolt (10), a first nut (11), a first pressure ring (12) and a fifth sealing gasket (13). A first threaded hole is provided at one end of the reactor body (1) close to the lower cover (4). A first connecting hole is provided on the first pressure ring (12). The first pressure ring (12) and the fifth sealing gasket (13) are both sleeved on the lower cover (4). The first bolt (10) is used to pass through the first connecting hole and be connected to the first threaded hole. The first nut (11) is connected to the first bolt (10), and the first nut (11) is used to be screwed toward the direction close to the first pressure ring (12) so as to press the fifth sealing gasket (13) between the first pressure ring (12) and the reactor body (1).

6. The tubular evaporative wall reactor according to claim 3, characterized in that: It also includes a second bolt, a second nut, a second pressure ring and a sixth sealing gasket. A second threaded hole is provided at one end of the reactor barrel (1) close to the upper cover (3). A second connecting hole is provided on the second pressure ring. The second pressure ring and the sixth sealing gasket are both sleeved on the upper cover (3). The second bolt is used to pass through the second connecting hole and connect to the second threaded hole. The second nut is connected to the second bolt, and the second nut is used to be screwed toward the second pressure ring to press the sixth sealing gasket between the second pressure ring and the reactor barrel (1).

7. The tubular evaporative wall reactor according to claim 1, characterized in that: It also includes a thermocouple tube (14), a portion of which passes through the upper cover (3) and extends into the inner cavity (200), and another portion of which is located outside the reactor cylinder (1).

8. The tubular evaporative wall reactor according to claim 1, characterized in that: It also includes a pressure gauge connecting pipe (15), a portion of which passes through the upper cover (3) and extends into the inner cavity (200), and another portion of which is located outside the reactor cylinder (1).

9. The tubular evaporative wall reactor according to claim 1, characterized in that: It also includes a water injection pipe (16), a portion of which passes through the upper cover (3) and extends into the outer cavity (100), and another portion of which is located outside the reactor cylinder (1).

10. The tubular evaporative wall reactor according to claim 1, characterized in that: It also includes a discharge pipe (17), a portion of which passes through the lower cover (4) and communicates with the inner cavity (200), and another portion of which is located outside the reactor cylinder (1).

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