阅读说明：本技术 一种集物料预热-污染物多级强化降解-腐蚀防控多功能于一体的超临界水反应器 (Supercritical water reactor integrating material preheating, pollutant multistage enhanced degradation, corrosion prevention and control ) 是由 王树众 蒋卓航 李艳辉 崔成超 徐海涛 任萌萌 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种集物料预热-污染物多级强化降解-腐蚀防控多功能于一体的超临界水反应器,其外部端盖、分体承压壁之间通过密封零件、连接结构实现超临界压力下紧密连接。端盖设置于分体承压壁上端,端盖底部中心处设置有同轴喷嘴基台,端盖与喷嘴基台间巧妙配合构成多个反应物环形空间。反应器上设置有多级氧气、辅助燃料注入口,以强化反应过程。该装置设置有蒸发壁结构,通过蒸发壁在反应器内部形成亚/超临界水膜或高温气膜,有效减缓了反应器内壁面的腐蚀并使反应器的温度得到了有效维持。该装置还实现了有机废物与反应产物在反应器本体中进行换热,充分利用了反应放热,有效减少了预热过程中的热量消耗。(The invention discloses a supercritical water reactor integrating material preheating, multi-stage pollutant enhanced degradation and corrosion prevention and control functions. The end cover is arranged at the upper end of the split bearing wall, the coaxial nozzle base station is arranged at the center of the bottom of the end cover, and the end cover and the nozzle base station are ingeniously matched to form a plurality of reactant annular spaces. The reactor is provided with a plurality of stages of oxygen and auxiliary fuel injection ports to strengthen the reaction process. The device is provided with the evaporation wall structure, forms the sub/supercritical water membrane or high temperature gas film inside the reactor through the evaporation wall, has effectively slowed down the corruption of reactor internal face and has made the temperature of reactor effectively maintain. The device has still realized organic waste and the heat transfer of reaction product in the reactor body, make full use of the reaction and released heat, has effectively reduced the heat consumption of preheating the in-process.)

1. A supercritical water reactor integrating material preheating, multi-stage pollutant enhanced degradation and corrosion prevention and control functions comprises a split pressure-bearing wall (7) provided with an end cover (14), and is characterized in that the split pressure-bearing wall (7) is divided into an upper part, a middle part and a lower part, all the parts are connected through a connecting structure and fastening bolts, wherein an oxygen cylinder (4) is arranged in the upper part, a material cylinder (5) is arranged in the upper middle part, a reactor inner wall (18) is arranged in the lower part, a reaction water outlet (N9) is arranged at the bottom end of the lower part, a material channel (3) is formed between the outer wall of the material cylinder (5) and the inner wall of the middle part of the split pressure-bearing wall (7), and between the inner wall (18) of the reactor and the inner wall of the lower part of the split pressure-bearing wall (7); an oxygen channel (G) is formed between the outer wall of the oxygen cylinder (4) and the upper inner wall of the split pressure-bearing wall (7), a nozzle base (15) with a step-shaped longitudinal section is coaxially arranged at the bottom of the end cover (14), a material annular space (A), an auxiliary fuel annular space (B) and an oxygen annular space (C) which are communicated with the interior of the reactor are formed between the end cover (14) and the nozzle base (15) in a matching manner, an upper material injection port (N3), an oxygen inner channel (D), a material inner channel (E) and an auxiliary fuel cylinder (16) are arranged on the end cover (14), wherein upper portion material filling opening (N3) intercommunication material annular space (A), passageway (D) intercommunication oxygen passageway (G) and oxygen annular space (C) in the oxygen, passageway (E) switch-on material passageway (3) and material annular space (A) in the material, auxiliary fuel barrel (16) intercommunication auxiliary fuel annular space (B).

2. The supercritical water reactor integrating the material preheating, multi-stage pollutant degradation enhancement, corrosion prevention and control functions as claimed in claim 1, wherein the top of the nozzle base (15) extends upwards from the end cap (14), the center of the nozzle base (15) is provided with a through axial hole structure, the auxiliary fuel cylinder (16) is disposed in the axial center of the end cap (14), the top of the outer wall of the nozzle base (15) is connected with the auxiliary fuel cylinder (16) through a sealing connection structure (13), an auxiliary fuel channel communicated with the auxiliary fuel annular space (B) is formed between the outer wall of the nozzle base (15) and the inner cylinder wall (11) of the auxiliary fuel cylinder (16), and an auxiliary fuel injection port (N1) communicated with the auxiliary fuel channel is formed on the side wall of the auxiliary fuel cylinder (16).

3. The supercritical water reactor integrating the functions of preheating materials, multistage strengthening degradation of pollutants, corrosion prevention and control as well as control as claimed in claim 2, wherein a glass window structure (19) for observing the flame condition inside the reactor is installed in the axial hole, an oxygen annular gap (20) is formed between the glass window structure (19) and the inner wall of the axial hole, an outward expanding structure (17) from top to bottom is arranged in the center of the bottom of the nozzle base platform (15), and an oxygen injection port (N2) is communicated with the inside of the reactor through the oxygen annular gap (20) and the outward expanding structure (17).

4. The supercritical water reactor integrating the functions of preheating materials, multi-stage strengthening degradation of pollutants, corrosion prevention and control as well as control of the pollutants as claimed in claim 3, wherein the auxiliary fuel injection port (N1) and the oxygen injection port (N2) are both provided with a spiral structure (21).

5. The supercritical water reactor integrating the functions of preheating materials, multi-stage strengthening degradation of pollutants, corrosion prevention and control as well as control according to claim 2, wherein the wall surface of the outer wall of the nozzle base (15) opposite to the inner cylinder wall (11) is provided with an electric heating belt (12) for preheating auxiliary fuel.

6. The supercritical water reactor integrating the functions of preheating materials, multi-stage strengthening degradation of pollutants, corrosion prevention and control as claimed in claim 2, wherein the outer wall of the oxygen cylinder (4) is spiral, i.e. the oxygen channel (G) is a spiral channel, and the bottom of the end cover (14) is provided with a hole for conveying materials in the material annular space (a), the auxiliary fuel in the auxiliary fuel annular space (B) and the oxygen in the oxygen annular space (C) into the reactor.

7. The supercritical water reactor integrating the functions of preheating materials, multi-stage strengthening degradation of pollutants and corrosion prevention and control as well as the functions of the claim 1 is characterized in that the end cover (14) is connected with the upper part of the split bearing wall (7) through a fastening bolt (1) at the outer part, and a sealing part (2) is arranged between the end cover (14) and the upper part of the split bearing wall (7); the upper part and the middle part of the split pressure-bearing wall (7) are connected with the fastening bolt (1) through a connecting structure I (8) at the outside; the middle part and the lower part of the split pressure-bearing wall (7) are connected with the fastening bolt (1) through a connecting structure II (9) at the outside; wherein, the connecting structure I (8) is respectively matched with the upper middle parts of the oxygen cylinder (4), the material cylinder (5), the evaporation wall (6) and the split pressure-bearing wall (7), and the material channel (3) and the oxygen channel (G) are communicated up and down at the connecting structure I (8); the upper part of the connecting structure II (9) is respectively matched with the middle parts of the material cylinder (5), the evaporation wall (6) and the split bearing wall (7), the lower part of the connecting structure II (9) is matched with the inner wall (18) of the reactor and the lower part of the split bearing wall (7), and the material channel (3) is communicated up and down at the connecting structure II (9).

8. The supercritical water reactor integrating the functions of preheating materials, multi-stage degradation of pollutants, corrosion prevention and control as well as the control as claimed in claim 7, wherein an evaporation wall (6) is disposed inside the material cylinder (5), a cooling water channel is formed between the evaporation wall (6) and the inner wall of the material cylinder (5), and the connection structure II (9) is provided with an evaporation wall fluid inlet (N7) and an evaporation wall fluid outlet (N6) both communicated with the cooling water channel for completing the inlet and outlet of the evaporation wall fluid.

9. The supercritical water reactor integrating the functions of preheating materials, multi-stage strengthening degradation of pollutants, corrosion prevention and control as claimed in claim 8, wherein a cooling water double-spiral channel is arranged between the evaporation wall (6) and the inner wall of the material barrel (5), and the cooling water double-spiral channel is divided into two parts which are communicated up and down by taking the connecting structure I (8) as a boundary line; different wall catalytic materials are loaded on the inner surface of the evaporation wall (6), an annular space for auxiliary fuel and auxiliary oxygen is formed between the evaporation wall (6) and a secondary feeding annular groove (F) on the inner side of the connecting structure (8), a plurality of rows of small holes are formed in the evaporation wall (6) at the secondary feeding annular groove (F), the auxiliary fuel and the auxiliary oxygen in the annular space are injected into the reactor through the small holes, the annular space for the auxiliary fuel is communicated with an auxiliary fuel secondary injection port (N4), and the annular space for the auxiliary oxygen is communicated with an oxygen secondary injection port (N5).

10. The supercritical water reactor integrating the functions of preheating materials, multi-stage degradation of pollutants, corrosion prevention and control as well as the functions of claim 1, wherein the lower part of the split pressure-bearing wall (7) is provided with a lower material inlet (N8) communicated with the material channel (3), the lower part of the split pressure-bearing wall (7) is matched with the inner wall (18) of the reactor to form a preheating zone of the material channel (3), and the inside of the preheating zone is provided with the vane-type spiral ribs (10).

Technical Field

The invention belongs to the technical field of environmental protection and chemical industry, relates to harmless treatment of high-concentration organic pollutants difficult to biochemically degrade by using supercritical water as a reaction medium, and particularly relates to a supercritical water reactor integrating material preheating, pollutant multi-stage enhanced degradation and corrosion prevention and control.

Background

Supercritical water is water in a special state at a temperature and pressure exceeding its critical point (374.15 ℃, 22.1 MPa). The density of the gas is close to that of the liquid and is 100-1000 times larger than that of the corresponding normal-pressure gas; the viscosity is close to that of gas and is about 1 to 10 percent of that of corresponding liquid; the diffusion coefficient is between that of gas and liquid and is 10-100 times that of common liquid. In the supercritical state, the physicochemical properties of water, such as ionic product constant, density, dielectric constant, viscosity, etc., are greatly changed. Supercritical water has a low dielectric constant, so that the supercritical water becomes a good solvent, can be mutually dissolved with organic matters and oxygen in any proportion to form a uniform phase, and the dissociation constant and the solubility of inorganic salts in the supercritical water are low. Meanwhile, the reaction carried out in a supercritical water environment has higher reaction speed and good heat transfer characteristic due to lower viscosity and higher diffusion coefficient.

Based on the characteristics, in the last 80 th century, scholars model of the United states proposed supercritical water oxidation technology. Supercritical Water Oxidation (SCWO) refers to a rapid homogeneous Oxidation reaction between organic matter and oxidant (generally excess oxidant) in SCW, and the organic matter is thoroughly decomposed into H₂O and CO₂The process of (1). The supercritical water oxidation technology has wide application range, can treat various industrial organic wastewater and wastes, municipal sewage, excessive activated sludge of sewage treatment plants and human metabolic sewage, eliminates toxicants of chemical weapons and the like, and has good environmental protection benefit, social benefit and economic benefit.

However, even though the supercritical water treatment technology has various advantages, the problems of strong corrosivity, high material requirement and energy consumption in the operation process caused by the harsh reaction conditions of SCWO become the biggest obstacles to the commercialization of SCWO at present. The specific surface is as follows:

(1) the material preheating equipment has high cost, large energy requirement and low reaction system economy. Although the SCWO process is an exothermic reaction, when the mass fraction of organic matters reaches 2-3%, self-heating can be realized, but an external heat source is still required for supplementing heat to the organic matters in the starting process of the equipment. At present, most of the heating modes of supercritical water oxidation equipment at home and abroad adopt an electric heating mode, and high-temperature and high-pressure external preheating equipment has huge investment cost, thereby causing huge obstacles to large-scale industrial application of the SCWO technology.

(2) The components of the refractory pollutants such as chemical wastewater, industrial sludge and the like are complex, the standard discharge of reaction effluent cannot be realized by conventional SCWO treatment, and the reaction effluent is often subjected to secondary treatment by a subsequent process flow, so that the complexity of a system is greatly increased, and the equipment investment cost and the system operation cost are further increased.

(3) And the corrosion of materials. In a supercritical water environment, the corrosion rate of the corrosion-resistant material is accelerated by high temperature, high pressure, dissolved oxygen and some free radicals and ions generated in the reaction. Furthermore, heteroatoms such as halogens, sulfur, and phosphorus contained in the organic matter decompose in supercritical water to generate acids, which further cause strong corrosion of equipment.

(4) Supercritical water oxidation reaction conditions are severe, and higher temperature and pressure are required. For a conventional tubular reactor, the wall of the reactor needs to withstand a high temperature of 600 ℃ and a high pressure of 25MPa or more, which leads to an increase in the cost of the reactor.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a supercritical water reactor integrating material preheating, pollutant multi-stage enhanced degradation and corrosion prevention and control functions, which can realize two-stage oxygen injection and auxiliary fuel injection at the upper part and the middle part of the reactor. When the pollutants are subjected to supercritical oxidation degradation in the reactor, oxygen and the auxiliary fuel can respectively and rapidly react at the beginning of the reaction and the middle stage of the reaction to generate a large amount of heat and active free radicals, the internal temperature of the reactor is further increased, and the two stages of oxygen and the auxiliary fuel can respectively generate the active free radicals at the upper part and the middle part of the reactor to further initiate and promote the oxidation reaction of the pollutants. The wall of the reactor is cooled by the evaporation wall, so that the problems of salt deposition and corrosion are reduced. The reactor preheats materials and cools fluid after reaction by feeding from the bottom, so that the heat release of the reaction is fully utilized, and the energy consumption of the reaction is greatly reduced. In addition, the reactor also has the characteristics of convenient disassembly and assembly, easy loading and catalyst replacement, easy maintenance, and the like.

In order to achieve the purpose, the invention adopts the technical scheme that:

a supercritical water reactor integrating material preheating, multi-stage pollutant enhanced degradation and corrosion prevention and control functions comprises a split pressure-bearing wall provided with an end cover, wherein the split pressure-bearing wall is divided into an upper part, a middle part and a lower part, the upper part, the middle part and the lower part are connected through a connecting structure and fastening bolts, an oxygen cylinder is arranged in the upper part, a material cylinder is arranged in the upper middle part, a reactor inner wall is arranged in the lower part, a reaction water outlet is arranged at the bottom end of the lower part, and a material channel is formed between the outer wall of the material cylinder and the inner wall of the oxygen cylinder, between the outer wall of the material cylinder and the middle inner wall of the split pressure-bearing wall and between; an oxygen channel is formed between the outer wall of the oxygen cylinder and the inner wall of the upper portion of the split pressure-bearing wall, a nozzle base station with a step-shaped longitudinal section is coaxially arranged at the bottom of the end cover, a material annular space, an auxiliary fuel annular space and an oxygen annular space which are communicated with the inside of the reactor are formed between the end cover and the nozzle base station in a matching mode, an upper material injection opening is formed in the end cover, an oxygen inner channel, a material inner channel and an auxiliary fuel cylinder, the upper material injection opening is communicated with the material annular space, the oxygen inner channel is communicated with the oxygen channel and the oxygen annular space, the material inner channel is communicated with the material channel and the material annular space.

The top of the nozzle base station extends upwards out of the end cover, the center of the nozzle base station is of a through axial hole structure, the auxiliary fuel cylinder is arranged in the center of the axis of the end cover, the top of the outer wall of the nozzle base station is connected with the auxiliary fuel cylinder through a sealing connection structure, an auxiliary fuel channel communicated with an auxiliary fuel annular space is formed between the outer wall of the nozzle base station and the inner cylinder wall of the auxiliary fuel cylinder, and an auxiliary fuel injection port communicated with the auxiliary fuel channel is formed in the side wall of the auxiliary fuel cylinder.

Install the glass window structure that is used for observing the inside flame condition of reactor in the axial hole, be the oxygen annular space between glass window structure and the axial hole inner wall, nozzle base station bottom central authorities expand the structure for top-down's outward, and the oxygen filling opening is inside through oxygen annular space and the structure intercommunication reactor that expands outward.

The auxiliary fuel injection port and the oxygen injection port are both provided with spiral structures.

And an electric heating belt for preheating auxiliary fuel is arranged on the wall surface of the outer wall of the nozzle base station, which is opposite to the inner cylinder wall.

The outer wall of the oxygen cylinder body is spiral, namely the oxygen channel is a spiral channel, and the bottom of the end cover is provided with a pore channel for conveying materials in the material annular space, auxiliary fuel in the auxiliary fuel annular space and oxygen in the oxygen annular space into the reactor.

The end cover is connected with the upper part of the split pressure bearing wall through a fastening bolt, and a sealing part is arranged between the end cover and the upper part of the split pressure bearing wall; the upper part and the middle part of the split pressure-bearing wall are connected with each other through a connecting structure I and a fastening bolt; the middle part and the lower part of the split pressure-bearing wall are connected with each other through a connecting structure II and a fastening bolt; the connecting structure I is respectively matched with the upper middle parts of the oxygen cylinder, the material cylinder, the evaporation wall and the split pressure-bearing wall, and the material channel and the oxygen channel are communicated up and down at the connecting structure I; the upper part of the connecting structure II is respectively matched with the middle parts of the material cylinder, the evaporation wall and the split bearing wall, the lower part of the connecting structure II is matched with the inner wall of the reactor and the lower part of the split bearing wall, and the material channel is communicated up and down at the connecting structure II.

The inner side of the material cylinder is provided with an evaporation wall, a cooling water channel is formed between the evaporation wall and the inner wall of the material cylinder, and the connecting structure II is provided with an evaporation wall fluid inlet and an evaporation wall fluid outlet which are communicated with the cooling water channel and used for completing the inlet and outlet of an evaporation wall fluid.

A cooling water double-spiral channel is arranged between the evaporation wall and the inner wall of the material cylinder, and the cooling water double-spiral channel is divided into two parts which are communicated up and down by taking the connecting structure I as a boundary line; different wall catalytic materials are loaded on the inner surface of the evaporation wall, the evaporation wall and a secondary feeding annular groove on the inner side of the connecting structure form an annular space for auxiliary fuel and auxiliary oxygen, multiple rows of small holes are formed in the position of the secondary feeding annular groove on the evaporation wall, the auxiliary fuel and the auxiliary oxygen in the annular space are injected into the reactor through the small holes, the annular space for the auxiliary fuel is communicated with an auxiliary fuel secondary injection port, and the annular space for the auxiliary oxygen is communicated with an oxygen secondary injection port.

The lower part of the split pressure-bearing wall is provided with a lower material inlet communicated with the material channel, the lower part of the split pressure-bearing wall is matched with the inner wall of the reactor to form a preheating zone of the material channel, and blade type spiral ribs are arranged in the preheating zone.

Compared with the existing supercritical water oxidation reactor, the invention has the advantages that:

1. the method aims at the problems that the energy demand of the current supercritical water oxidation reaction device is large and the system economy is not high. The auxiliary fuel is introduced at the inlet for heat compensation, and the clean auxiliary fuel reacts with oxygen to release a large amount of heat and further reacts with materials, so that the degradation effect of organic matters is enhanced. Organic pollutants enter the reactor at the bottom of the reactor, and heat exchange is carried out between the material channel formed by matching the split bearing wall at the lower part of the reactor and the inner wall of the reactor and the high-temperature fluid after reaction, so that heat transfer between the high-temperature fluid after reaction and low-temperature feeding is realized, the reaction heat release of the organic pollutants can be effectively utilized, and the energy consumption is greatly reduced.

2. Supercritical water heat combustion is adopted, enhanced measures such as segmented oxygen injection and auxiliary fuel injection are matched, efficient degradation of organic matters in shorter retention time can be realized at the reaction temperature of 600-1100 ℃, and further the volume of the reactor is reduced.

3. The temperature of the fluid inside the supercritical water reactor is much higher than that of the conventional SCWO reactor, and therefore cooling protection is required to the walls. The device innovatively combines the evaporation wall and the material channel, and high-temperature fluid in the double-spiral channel of the evaporation wall is not directly contacted with the external pressure-bearing wall, so that the material selection requirement of the external pressure-bearing wall is effectively reduced, and the processing cost is further reduced. High-temperature fluid permeates into the reactor through the evaporation wall, and a layer of supercritical protective water film is formed on the surface of the inner wall. The water film not only can cool the inner wall surface of the combustion chamber, but also can prevent the high-temperature reaction fluid from directly contacting with the wall surface, and reduce the corrosion of the reaction fluid to the wall surface and the precipitation of inorganic salt on the wall surface. Through letting in sub/supercritical water or other high temperature gases, can prevent effectively that the water film that the internal face formed from reducing the inside reaction temperature of reactor, influence the degradation of organic matter.

4. The reactor is innovatively provided with the glass window structure, and the glass window structure is organically combined with the oxygen injection channel, so that the glass window structure is effectively prevented from being overheated, and the real-time monitoring of the reaction condition in the reactor is realized. The reactor is provided with a plurality of swirl nozzle structures, and a plurality of strands of materials can be fully and uniformly mixed at the inlet of the reactor.

Drawings

FIG. 1 is a sectional view showing the structure of a reactor of the present invention.

Wherein: 1. fastening a bolt; 2. sealing the part; 3. a material channel; 4. an oxygen cylinder; 5. a material cylinder; 6. an evaporation wall; 7. a split pressure-bearing wall; 8. a connecting structure I; 9. a connecting structure II; 10. a vaned helical rib; 11. a secondary fuel cartridge wall; 12. an electrical heating belt; 13. a sealing connection structure; 14. an end cap; 15. a nozzle base; 16. an auxiliary fuel cartridge; 17. an outward expansion structure; 18. the inner wall of the reactor; 19. a glass window structure; 20. an oxygen annular void; 21. a helical structure.

A is a material annular space; b is an auxiliary fuel annular space; c is an oxygen annular space; d is an oxygen inner channel; e is a material inner channel; f is a secondary feeding annular groove.

N1 is an auxiliary fuel injection port; n2 is an oxygen injection port; n3 is an upper material injection port; n4 is an auxiliary fuel secondary injection port; n5 is oxygen secondary injection port; n6 is an evaporation wall fluid outlet; n7 is an evaporation wall fluid inlet; n8 is a lower material injection port; and N9 is a reaction water outlet.

Fig. 2 is a partial (upper-upper part of fig. 1) schematic view of the present invention.

Fig. 3 is a partial (lower middle part of fig. 1) schematic view of the present invention.

Fig. 4 is a schematic view of a nozzle base.

FIG. 5 is a schematic view of the structure of the connecting structure I.

FIG. 6 is a schematic view of the structure of the connection structure II.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, 2 and 3, the supercritical water reactor integrating material preheating, multi-stage pollutant degradation enhancement, corrosion prevention and control functions comprises a split pressure-bearing wall 7 provided with an end cover 14, wherein the split pressure-bearing wall 7 is divided into an upper part, a middle part and a lower part, the end cover 14 is connected with the upper part of the split pressure-bearing wall 7 through a fastening bolt 1, and a sealing part 2 is arranged between the end cover 14 and the upper part of the split pressure-bearing wall 7; the upper part and the middle part of the split pressure-bearing wall 7 are connected with the fastening bolt 1 through a connecting structure I8; the middle part and the lower part of the split pressure-bearing wall 7 are connected with the fastening bolt 1 through a connecting structure II 9.

Wherein, the upper part of the split pressure-bearing wall 7 is internally provided with an oxygen cylinder 4, the upper middle part is internally provided with a material cylinder 5, the lower part is internally provided with a reactor inner wall 18, the bottom end of the lower part is provided with a reaction water outlet N9, a material channel 3 is formed between the outer wall of the material cylinder 5 and the inner wall of the oxygen cylinder 4, between the outer wall of the material cylinder 5 and the middle inner wall of the split pressure-bearing wall 7 and between the reactor inner wall 18 and the lower inner wall of the split pressure-bearing wall 7, and the material channel 3 is preferably a straight channel and is used for preheating reaction materials and cooling fluid; an oxygen channel G is formed between the outer wall of the oxygen cylinder 4 and the upper inner wall of the split pressure-bearing wall 7.

The inner side of the material cylinder 5 can be further provided with an evaporation wall 6, a cooling water channel is formed between the evaporation wall 6 and the inner wall of the material cylinder 5, and at the moment, the connecting structure II 9 can be provided with an evaporation wall fluid inlet N7 and an evaporation wall fluid outlet N6 which are both communicated with the cooling water channel and are used for completing the inlet and outlet of evaporation wall fluid.

Referring to fig. 1, 2 and 4, a nozzle base 15 is coaxially arranged on the end cover 14 in the radial direction, the longitudinal section of the nozzle base 15 is in a step shape, and a material annular space a, an auxiliary fuel annular space B and an oxygen annular space C which are communicated with the inside of the reactor are formed between the end cover 14 and the nozzle base 15 in a matching mode. Wherein the auxiliary fuel annular space B is uppermost for injecting auxiliary fuel, the oxygen annular space C is intermediate for injecting preheated oxygen, and the material annular space A is below for injecting material.

The top of the nozzle base 15 extends upwards to form an end cover 14, the center of the nozzle base 15 is of a through axial hole structure, the auxiliary fuel cylinder 16 is arranged in the center of the axis of the end cover 14, the top of the outer wall of the nozzle base 15 is connected with the auxiliary fuel cylinder 16 through a sealing connection structure 13, an auxiliary fuel channel communicated with the auxiliary fuel annular space B is formed between the outer wall of the nozzle base 15 and the inner cylinder wall 11 of the auxiliary fuel cylinder 16, an electric heating belt 12 used for preheating auxiliary fuel can be arranged on the wall surface, opposite to the inner cylinder wall 11, of the outer wall of the nozzle base 15, and an auxiliary fuel injection port N1 communicated with the auxiliary fuel channel is formed in the side wall of the auxiliary fuel cylinder 16.

An upper material injection port N3, an oxygen inner channel D, a material inner channel E and an auxiliary fuel cylinder 16 are arranged on the end cover 14, wherein the upper material injection port N3 is communicated with the material annular space A, the oxygen inner channel D is communicated with the oxygen channel G and the oxygen annular space C, the material inner channel E is communicated with the material channel 3 and the material annular space A, and the auxiliary fuel cylinder 16 is communicated with the auxiliary fuel annular space B. The preheated oxygen and material in the oxygen channel G and the material channel 3, respectively, are introduced into the respective annular spaces.

Install the glass window structure 19 that is used for observing the inside flame condition of reactor in the axial hole of nozzle base station 15, be oxygen annular space 20 between glass window structure 19 and the axial hole inner wall, nozzle base station 15 bottom center is top-down's outer structure 17 that expands, and inside oxygen injection port N2 communicated the reactor through oxygen annular space 20 and outer structure 17 that expands, and oxygen is injected through oxygen injection port N2, and the oxygen in oxygen annular space 20 can be used to the cooling of glass window structure. In addition, the nozzle base table 15 and the material annular space a are connected with two material inlets, one is an upper material injection port N3, and the other is a lower material injection port N8 communicated with the material channel 3, and the stable combustion in the reactor can be realized by adjusting the material flow and the temperature of the two injection ports.

Wherein, auxiliary fuel filling opening N1 and oxygen filling opening N2 all can set up helical structure 21 to make oxygen and auxiliary fuel pour into with the spiral form, form the whirl inside the reactor, guarantee the thorough reaction of the misce bene of each feeding and material.

When the outer wall of the oxygen cylinder body 4 is spiral, the oxygen channel G is a spiral channel, and the bottom of the end cover 14 is provided with a pore channel for conveying the material in the material annular space a, the auxiliary fuel in the auxiliary fuel annular space B and the oxygen in the oxygen annular space C into the reactor.

Correspondingly, a cooling water double-spiral channel can be arranged between the evaporation wall 6 and the inner wall of the material cylinder 5, namely, two layers of spiral wall surfaces and one layer of the material cylinder 5 are arranged at the upper part and the middle part of the reactor. The cooling water double-helix channel is divided into two parts which are communicated up and down by taking the connecting structure I8 as a boundary line; different wall catalytic materials are loaded on the inner surface of the evaporation wall 6, an annular space for auxiliary fuel and auxiliary oxygen is formed by the evaporation wall 6 and a secondary feeding annular groove F on the inner side of the connecting structure 8, a plurality of rows of small holes are formed in the position of the secondary feeding annular groove F on the evaporation wall 6, the auxiliary fuel and the auxiliary oxygen in the annular space are injected into the reactor through the small holes, the annular space for the auxiliary fuel is communicated with an auxiliary fuel secondary injection port N4, and the annular space for the auxiliary oxygen is communicated with an oxygen secondary injection port N5.

Specifically, referring to fig. 5, a connecting structure i 8 is respectively matched with the upper middle parts of the oxygen cylinder 4, the material cylinder 5, the evaporation wall 6 and the split pressure-bearing wall 7, and the material channel 3 and the oxygen channel G are both communicated up and down at the connecting structure i 8; in addition, an evaporation wall fluid channel is arranged in the connecting structure I8 and is used for realizing the mutual communication of fluids above and below the cooling water double-spiral channel. The center of the connecting structure I8 on the left side and the right side of the reactor is perforated, oxygen and auxiliary fuel can be injected respectively, secondary injection of the auxiliary fuel and the oxygen in the reactor is realized, and the oxygen and the auxiliary fuel enter an annular space inside the connecting structure I8 respectively and then are uniformly injected into the reactor through the small holes in the evaporation wall 6. In addition, in the right connecting structure I8, a flow of oxygen enters the oxygen channel for preheating.

Referring to fig. 6, the upper part of the connecting structure ii 9 is respectively matched with the middle parts of the material cylinder 5, the evaporation wall 6 and the split pressure-bearing wall 7, the lower part of the connecting structure ii 9 is matched with the inner wall 18 of the reactor and the lower part of the split pressure-bearing wall 7, and the material channel 3 is communicated up and down at the connecting structure ii 9. The connecting structures II 9 on the left side and the right side of the reactor are respectively provided with an evaporation wall fluid inlet N7 and an evaporation wall fluid outlet N6.

The lower part of the split pressure-bearing wall 7 is provided with a lower material inlet N8 communicated with the material channel 3, the lower part of the split pressure-bearing wall 7 is matched with the inner wall 18 of the reactor to form a preheating zone of the material channel 3, and the inside of the preheating zone is provided with the blade type spiral rib 10.

When the reaction starts, preheated auxiliary fuel and oxygen are injected through the auxiliary fuel injection port N1 and the oxygen injection port N2, the preheated auxiliary fuel enters an annular space formed by the end cover 14 and the nozzle base platform 15, then enters the reactor through the annular channel, is uniformly mixed with the oxygen entering the reactor through the outward expansion structure 17 and is combusted, a large amount of heat is released, and the reactor is preheated.

Then, materials are injected into the reactor through a lower material injection port N8, the materials exchange heat with reacted fluid in a material channel formed by matching a split pressure-bearing wall 7 at the lower part of the reactor and the inner wall 18 of the reactor, the heat exchange is enhanced through the arranged blade type spiral ribs 10, and then the materials continuously flow upwards, enter an upper annular space and then enter the reactor through an annular channel.

Auxiliary fuel and oxygen are injected into the reactor through an auxiliary fuel secondary injection port N4 and an oxygen secondary injection port N5, and are used for enhancing the degradation of the waste organic waste. Another oxygen is delivered to the top of the reactor from an oxygen spiral channel formed by the oxygen cylinder 4 and upwards, and enters the corresponding annular space through a pore channel on the top end cover 14, and then enters the reactor for reaction. Meanwhile, high-temperature fluid is introduced into the evaporation wall fluid injection port N7 and further flows into the double spiral channel, and a subcritical/supercritical water film or a gas film is formed on the inner wall surface of the reactor. Because the evaporation wall cylinder 6 is a double-spiral channel, when cooling water flows into the top of the reactor through one channel, the cooling water flows downwards through the other channel communicated with the top and flows out from an evaporation wall fluid outlet N6.

And the reacted reaction product is subjected to heat exchange and cooling with external feeding at the lower part of the reactor, and the reaction product is discharged from a reaction water outlet N9 after being cooled.

In summary, the invention discloses a supercritical water reactor integrating material preheating, multi-stage pollutant degradation enhancement, corrosion prevention and control, wherein the external end cover and the split bearing wall are tightly connected under supercritical pressure through a sealing part and a connecting structure. The end cover is arranged at the upper end of the split bearing wall, the coaxial nozzle base station is arranged at the center of the bottom of the end cover, and the end cover and the nozzle base station are ingeniously matched to form a plurality of reactant annular spaces. The reactor is provided with a plurality of stages of oxygen and auxiliary fuel injection ports to strengthen the reaction process. The device is provided with the evaporation wall structure, forms the sub/supercritical water membrane or high temperature gas film inside the reactor through the evaporation wall, has effectively slowed down the corruption of reactor internal face and has made the temperature of reactor effectively maintain. The device has still realized organic waste and the heat transfer of reaction product in the reactor body, make full use of the reaction and released heat, has effectively reduced the heat consumption of preheating the in-process.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.