A reactor and system for continuous production of potassium superoxide by three-channel spray combustion method

Abstract

The present invention provides a reactor and system for continuously producing potassium superoxide by a three-channel spray combustion method, comprising a central mixed gas pipeline, a metallic potassium liquid flow pipeline, a guide groove barrel and a main mixed gas pipeline arranged in sequence from the inside to the outside, wherein the space inside the central mixed gas pipeline is the central mixed gas channel; the space between the central mixed gas pipeline and the metallic potassium liquid flow pipeline is the metallic potassium liquid flow channel; the space between the guide groove barrel and the main mixed gas pipeline is the main mixed gas channel. The present invention adopts a method of sandwiching the metallic potassium liquid flow inside and outside the mixed gas to carry out strong mixing and sufficient reaction. The system of the present invention can effectively and safely ensure that the main reaction is fully carried out, can repeatedly reuse the reaction tail gas to reduce production costs, can recover the heat energy generated by the reaction, and can realize continuous automated production.

Description

Technical Field

[0001] The invention belongs to the field of chemical industry and relates to the production and preparation of potassium superoxide, and specifically relates to a reactor and a system for continuously producing potassium superoxide by a three-channel spray combustion method. Background Art

[0002] Potassium superoxide is the cheapest, safest and most convenient chemical agent for oxygen supply in self-oxygen life support systems. It can be used in aerospace, diving, mine rescue, underwater rescue, plateau operations, fire self-rescue, portable oxygen supply and other self-oxygen life support systems. The principle is that potassium superoxide reacts automatically with carbon dioxide exhaled by humans at room temperature to produce oxygen and potassium carbonate, so that the oxygen needed by humans can be produced without relying on other external conditions, thereby maintaining life until it is transferred to a normal natural environment, which shows its importance in human life activities.

[0003] There are three main methods for preparing potassium superoxide. One is that potassium metal reacts with hydrogen peroxide to generate potassium superoxide. This method seems simple, but it is actually very dangerous and prone to explosion. Moreover, the purity of the generated potassium superoxide is not high, and the oxygen production per 100g weight is less than 25g. Therefore, this method has been eliminated. Another method is to oxidize potassium dissolved in liquid ammonia with oxygen at -30 to 50°C to generate potassium superoxide. This method has relatively strict reaction conditions, cumbersome operation, and is not easy to industrialize. It is only used for laboratory preparation. The last method is that potassium metal reacts with oxygen or air under certain conditions to directly generate potassium superoxide. This method can produce potassium superoxide that meets the needs, but the reaction conditions and reaction equipment are relatively high and the production cost is also relatively high. This is also the reason why potassium superoxide is currently only used in special environments such as military and not widely used in civilian use. Therefore, how to safely and low-costly produce potassium superoxide has become the goal of scientific and technological workers in this industry. In fact, the reaction of potassium and oxygen at a certain temperature to generate potassium superoxide mainly ensures that the reaction proceeds in the direction of the main reaction of generating potassium superoxide, and the reaction must be complete. In this process, if the reaction temperature is too low, potassium oxide may be generated. If it is too high, the generated potassium superoxide will decompose and generate potassium oxide or even potassium reacts with nitrogen to generate potassium nitride, so it is very important to control the reaction temperature. Since the reaction of liquid metal potassium with oxygen or air is a two-phase combustion reaction, the nozzle and reactor of the burner are the key to ensuring that the reaction can be complete. In the process of generating potassium superoxide, controlling the oxygen or air to contain as little water, oil, and carbon dioxide as possible is the key to ensuring the normal reaction and product quality. This is because metallic potassium and water can react to generate potassium hydroxide and hydrogen, which not only affects the purity of potassium superoxide but also may cause the generated hydrogen to form an explosive mixed gas with the reaction gas to produce an explosion hazard; if the reaction gas contains carbon dioxide, it can react with the generated potassium superoxide to generate potassium carbonate, although it will not cause danger, but it affects the product quality; if the reaction gas contains oil, it can react with the generated potassium superoxide to generate other products that affect the quality of potassium superoxide. The Chinese patent with application number 201711176821.0 discloses a method for preparing potassium superoxide powder by spray oxidation of potassium metal. The method adopts a dual-channel nozzle spray reaction to prepare potassium superoxide, but the method also has many shortcomings. First, the method adopts a simple dual-channel, and the liquid potassium metal only reacts from the intersection of the middle channel jet and the outer ring air flow. The mixing effect of this nozzle is not ideal, and the rapid and complete reaction of the potassium metal cannot be guaranteed. The production efficiency is low. In addition, the patent does not explain the reactant process. Once the unreacted potassium metal is wrapped by the generated potassium superoxide and falls into the collector, the temperature can no longer guarantee the main reaction, and potassium oxide may be generated to affect the product purity. In addition, the oxidizing gas used in the patent is purified air. In order to take away a large amount of heat generated by the reaction, a large excess of purified air must be used, and this air must be preheated to the reaction temperature before entering the system, which increases the production cost.Solid alkali is needed to purify the air, and a large amount of exhausted air needs to be absorbed by water spraying, which will produce waste alkali and alkaline wastewater, which not only increases the production cost, but also produces three wastes. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a reactor and system for continuously producing potassium superoxide by a three-channel spray combustion method, so as to solve the technical problem in the prior art that it is difficult to ensure that the main reaction is completely carried out.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A three-channel spray combustion reactor comprises a central mixed gas pipeline, one end of the central mixed gas pipeline is closed and the other end is open, a guide rod is arranged in the central mixed gas pipeline, the guide rod is fixed to the closed end of the central pipeline, a first spiral guide plate is arranged on the guide rod, and the gap inside the central mixed gas pipeline is the central mixed gas channel;

[0007] The central mixed gas pipeline is provided with a metallic potassium liquid flow pipeline on the outside, one end of the metallic potassium liquid flow pipeline is closed and the other end is open, the closed end of the metallic potassium liquid flow pipeline is fixedly mounted on the central mixed gas pipeline, a second spiral guide plate is mounted on the outer wall of the central mixed gas pipeline inside the metallic potassium liquid flow pipeline, and the gap between the central mixed gas pipeline and the metallic potassium liquid flow pipeline is a metallic potassium liquid flow channel;

[0008] A guide groove cylinder is fixedly mounted on the outer wall of the metallic potassium liquid flow pipeline in close contact, a conical guide hole cylinder and a main mixed gas pipeline are sequentially mounted on the outer wall of the guide groove cylinder from the inside to the outside, one end of the conical guide hole cylinder and the main mixed gas pipeline is closed and the other end is open, the closed ends of the conical guide hole cylinder and the main mixed gas pipeline are fixedly mounted on the guide groove cylinder, a plurality of guide grooves are opened on the outer wall of the guide groove cylinder along the axial direction, a plurality of guide holes are penetrated through the side wall of the conical guide hole cylinder; the gap between the guide groove cylinder and the main mixed gas pipeline is the main mixed gas channel.

[0009] The present invention also has the following technical features:

[0010] A plurality of strip-shaped flow-guiding holes penetrating the side wall of the tapered flow-guiding hole cylinder are provided along the axial direction.

[0011] The bottom of the outer wall of the main mixed gas pipeline is also provided with a mounting piece.

[0012] The open end of the guide rod, the open end of the central mixed gas pipeline, the open end of the metallic potassium liquid flow pipeline, the open end of the guide groove cylinder, the open end of the tapered guide hole cylinder and the open end of the main mixed gas pipeline are arranged flush at the same end.

[0013] The first spiral guide vane and the second spiral guide vane are both arranged starting from the closed end and ending at a position less than or equal to 1 / 4 of the total length from the open end.

[0014] The thread lead angles of the first spiral guide vane and the second spiral guide vane are respectively 15° to 75°.

[0015] The number of the guide grooves is 10 to 30; the number of the guide holes is 12 to 32.

[0016] The present invention also protects a system for continuously producing potassium superoxide by a three-channel spray combustion method, comprising an oxygen regulating heat preservation tank and a metal potassium heating heat preservation high-level tank, and also comprising a three-channel spray combustion reactor, wherein the three-channel spray combustion reactor adopts the three-channel spray combustion reactor as described above;

[0017] The oxygen regulating and heat-insulating tank is connected to the mixed gas distributor through a mixed gas fan, one output branch of the mixed gas distributor is connected to the central mixed gas channel of the three-channel spray combustion reactor, and the other output branch of the mixed gas distributor is connected to the main mixed gas channel of the three-channel spray combustion reactor; the metal potassium heating and heat-insulating high-level tank is connected to the metal potassium liquid flow channel of the three-channel spray combustion reactor through a metal potassium metering pump;

[0018] The three-channel spray combustion reactor is installed on the top of the reaction tower, and the bottom of the reaction tower is connected to the potassium superoxide collection tank, multiple cyclone dust collectors connected in series, a heat exchanger, a bag dust collector and an exhaust gas collection tank in sequence;

[0019] The tail gas collecting tank is connected to the oxygen regulating insulation tank through the tail gas fan to recycle the tail gas.

[0020] A star-shaped discharger is arranged at the bottom of the potassium superoxide collecting tank.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] (I) In the three-channel spray combustion reactor adopted by the present invention, the swirl directions of the three fluids of the central mixed gas, the metallic potassium liquid flow and the main mixed gas are in the same direction, and the metallic potassium liquid flow is sandwiched between the mixed gas and the inner and outer sides to achieve strong mixing and sufficient reaction.

[0023] (II) The system of the present invention can effectively and safely ensure that the main reaction is fully carried out, can repeatedly reuse the reaction tail gas to reduce production costs, can recover the heat energy generated by the reaction, and can realize continuous automated production.

[0024] (III) The nozzle components used in the present invention have the advantages of simple structure and convenient processing. At the same time, most of the structures use coaxial nested matching structures, and the overall structure is stable and easy to install, disassemble and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a three-channel spray combustion reactor.

[0026] Figure 2 It is a schematic diagram of the structure of the first spiral guide vane.

[0027] Figure 3 It is a structural diagram of the central mixture pipeline.

[0028] Figure 4 It is a schematic diagram of the structure of the metallic potassium liquid flow pipeline.

[0029] Figure 5 It is a structural schematic diagram of the guide groove tube.

[0030] Figure 6 It is a structural schematic diagram of a tapered diversion hole tube.

[0031] Figure 7 It is a schematic diagram of the structure of the main mixture pipeline.

[0032] Figure 8 It is a schematic diagram of the structure and process of a system for continuously producing potassium superoxide by a three-channel spray combustion method.

[0033] The meanings of the various numbers in the figure are: 1-oxygen regulating insulation tank, 2-metal potassium heating insulation high-level tank, 3-three-channel spray combustion reactor, 4-mixed gas fan, 5-mixed gas distributor, 6-metal potassium metering pump, 7-reaction tower, 8-potassium superoxide collection tank, 9-cyclone dust collector, 10-heat exchanger, 11-bag dust collector, 12-exhaust gas collection tank, 13-exhaust gas fan, 14-star discharger;

[0034] 301-central mixed gas pipeline, 302-guide rod, 303-first spiral guide plate, 304-central mixed gas channel, 305-metal potassium liquid flow pipeline, 306-second spiral guide plate, 307-metal potassium liquid flow channel, 308-guide groove cylinder, 309-main mixed gas pipeline, 310-conical guide hole cylinder, 311-guide groove, 312-guide hole, 313-main mixed gas channel, 314-mounting part.

[0035] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0036] From the analysis of the prior art, there are serious deficiencies in the existing processes and devices. After years of research, the researchers of the present invention believe that to solve the deficiencies in the prior art, it is necessary to fundamentally solve the problem of reactor spray mixing, and to ensure that the reaction materials have enough travel, that is, enough residence time, so as to ensure that the main reaction is carried out thoroughly. In order to reduce production costs, the reaction tail gas must be recycled, which avoids the cost of a large amount of purified gas on the one hand, and no longer produces waste alkali and alkaline waste water, and the heat energy generated by the reaction can also be recovered at the same time.

[0037] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art.

[0038] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0039] Embodiment 1:

[0040] Following the above technical solution, Figures 1 to 7 As shown, this embodiment provides a three-channel spray combustion reactor, including a central mixed gas pipeline 301, one end of the central mixed gas pipeline 301 is closed and the other end is open, a guide rod 302 is arranged in the central mixed gas pipeline, the guide rod 302 is fixed to the closed end of the central pipeline, a first spiral guide plate 303 is arranged on the guide rod 302, and the gap inside the central mixed gas pipeline 301 is a central mixed gas channel 304;

[0041] A metallic potassium liquid flow pipeline 305 is sleeved on the outside of the central mixed gas pipeline 301, one end of the metallic potassium liquid flow pipeline 305 is closed and the other end is open, the closed end of the metallic potassium liquid flow pipeline 305 is fixedly mounted on the central mixed gas pipeline 301, a second spiral guide plate 306 is mounted on the outer wall of the central mixed gas pipeline 301 inside the metallic potassium liquid flow pipeline 305, and the gap between the central mixed gas pipeline 301 and the metallic potassium liquid flow pipeline 305 is a metallic potassium liquid flow channel 307;

[0042] A guide groove cylinder 308 is fixedly mounted in close contact on the outer wall of the metallic potassium liquid flow pipeline 305, and a conical guide hole cylinder 310 and a main mixed gas pipeline 309 are sequentially mounted on the outer wall of the guide groove cylinder 308 from the inside to the outside. One end of the conical guide hole cylinder 310 and the main mixed gas pipeline 309 is closed and the other end is open. The closed ends of the conical guide hole cylinder 310 and the main mixed gas pipeline 309 are fixedly mounted on the guide groove cylinder 308. A plurality of guide grooves 311 are opened along the axial direction on the outer wall of the guide groove cylinder 308, and a plurality of guide holes 312 are penetrated through the side wall of the conical guide hole cylinder 310; the gap between the guide groove cylinder 308 and the main mixed gas pipeline 309 is a main mixed gas channel 313.

[0043] As a preferred solution of this embodiment, a plurality of strip-shaped guide holes 312 penetrating the side wall are opened on the side wall of the tapered guide hole tube 310 along the axial direction. The strip-shaped guide holes 312 can better match the guide groove 311 .

[0044] As a preferred solution of this embodiment, a mounting member 314 is further provided at the bottom of the outer wall of the main mixed gas pipeline 309 , so as to facilitate the entire three-channel spray combustion reactor 3 to be better mounted on the top of the reaction tower 7 .

[0045] As a preferred solution of this embodiment, the open end of the guide rod 302, the open end of the central mixed gas pipeline 301, the open end of the metallic potassium liquid flow pipeline 305, the open end of the guide groove cylinder 308, the open end of the tapered guide hole cylinder 310 and the open end of the main mixed gas pipeline 309 are at the same end and are arranged flush to facilitate better mixing of the raw materials.

[0046] As a preferred embodiment of the present invention, the first spiral guide vane 303 and the second spiral guide vane 306 are arranged from the closed end to a position less than or equal to 1 / 4 of the total length from the open end, and the thread lead angles of the first spiral guide vane 303 and the second spiral guide vane 306 are 15° to 75°, respectively. The number of spiral heads or the number of the first spiral guide vane 303 and the second spiral guide vane 306 are 1 to 12, respectively. It can be set as needed. In the channel of the three-channel spray combustion reactor 3, the fluid forms a radial vortex and is ejected from the open end nozzle through the first spiral guide vane 303 and the second spiral guide vane 306. The metallic potassium liquid flow is fully mixed and reacted under the encirclement and clamping of the two internal and external mixed gases.

[0047] As a preferred solution of this embodiment, the number of guide grooves 311 is 10 to 30, and the number of guide holes 312 is 12 to 32.

[0048] In the present invention, the closed end side wall of the central mixed gas pipeline 301, the closed end side wall of the metallic potassium liquid flow pipeline 305 and the closed end side wall of the main mixed gas pipeline 309 are respectively provided with feed ports, and the feed ports are respectively connected with the corresponding central mixed gas channel 304, the metallic potassium liquid flow channel 307 and the main mixed gas channel 313 to form a three-channel structure and realize the three-channel spray combustion method.

[0049] Embodiment 2:

[0050] This embodiment provides a system for continuously producing potassium superoxide by a three-channel spray combustion method. Figure 8 As shown, it includes an oxygen regulating insulation tank 1 and a metal potassium heating insulation high-level tank 2, and also includes a three-channel spray combustion reactor 3. The three-channel spray combustion reactor 3 adopts the three-channel spray combustion reactor in Example 1;

[0051] The oxygen regulating and heat-insulating tank 1 is connected to the mixed gas distributor 5 through the mixed gas blower 4, one output branch of the mixed gas distributor 5 is connected to the central mixed gas channel 304 of the three-channel spray combustion reactor 3, and the other output branch of the mixed gas distributor 5 is connected to the main mixed gas channel 313 of the three-channel spray combustion reactor 3; the metal potassium heating and heat-insulating high-level tank 2 is connected to the metal potassium liquid flow channel 307 of the three-channel spray combustion reactor 3 through the metal potassium metering pump 6;

[0052] The three-channel spray combustion reactor 3 is installed on the top of the reaction tower 7, and the bottom of the reaction tower 7 is connected to the potassium superoxide collection tank 8, a plurality of cyclone dust collectors 9 connected in series, a heat exchanger 10, a bag dust collector 11 and an exhaust gas collection tank 12 in sequence;

[0053] The tail gas collecting tank 12 is connected to the oxygen regulating insulation tank 1 through the tail gas fan 13 to recover the tail gas.

[0054] A star-shaped discharger 14 is provided at the bottom of the potassium superoxide collecting tank 8 .

[0055] In this embodiment, the tower body of the reaction tower 7 has a diameter of 1.5 to 5 meters and a height of 3 to 20 meters.

[0056] In this embodiment, the heat exchange medium in the heat exchanger 10 is heat transfer oil or low-temperature molten salt. The heat transfer oil or low-temperature molten salt is heated by electric heating, and cooled by another heat exchanger, and the heat exchange medium is water.

[0057] In this embodiment, an insulation layer is provided on the oxygen regulating insulation tank 1, a heating insulation layer and a weighing module are provided on the metal potassium heating and insulation high-level tank 2, and the metal potassium in the metal potassium heating and insulation high-level tank 2 is protected by nitrogen.

[0058] When the system for continuously producing potassium superoxide by the three-channel spray combustion method of the present invention is used, molten potassium metal and a mixed gas containing a certain concentration of oxygen are respectively metered at a certain temperature and in a certain proportion and introduced into the three-channel spray combustion reactor 3, the reaction mixed gas is distributed to the central mixed gas channel 304 and the main mixed gas channel 313 by the mixed gas distributor 5, and the liquid potassium metal enters the potassium metal liquid flow channel 307, and the mixed gas is sandwiched between the potassium metal liquid flow and the mixed gas to perform strong mixing, and the reaction is carried out in the reaction tower 7 by the spray combustion method. The potassium superoxide generated by the reaction enters the potassium superoxide collection tank 8 under the action of the airflow, and is continuously discharged from the bottom of the potassium superoxide collection tank 8 through the star-shaped discharger 14. The tail gas is dedusted by the two-stage cyclone dust collector 9 connected in series to collect the potassium superoxide entrained therein, and then cooled to a certain temperature by the heat exchanger 10, and then enters the tail gas collecting tank 12 through the bag dust collector 11. The tail gas collected in the tail gas collecting tank 12 is sent to the mixed gas blending tank 1 through the tail gas fan 13 to be blended with pure oxygen to the required oxygen concentration. In this way, the mixed gas is circulated in the system except for the supplementary oxygen.

[0059] The process of continuously producing potassium superoxide in the system using the three-channel spray combustion method of the present invention is as follows:

[0060] The mixed gas is a mixed gas composed of oxygen and nitrogen, oxygen and purified air, oxygen and argon, containing 15-45% oxygen by mass; the mass content of water, carbon dioxide and organic matter in the mixed gas is less than 300ppm, and the intake temperature of the mixed gas is controlled at 240-320℃.

[0061] The liquid potassium metal is nitrogen protected liquid potassium, and the feed temperature of the potassium metal is controlled at 70-220°C.

[0062] The mixed gas distributed to the central mixed gas channel 304 by the mixed gas distributor 5 accounts for 1 / 6 to 1 / 5 of the total gas volume.

[0063] The feed ratio of liquid potassium metal to oxygen in the mixed gas is controlled at 1:5-60 mol. The flow rate of liquid potassium metal is 1-10 m / s, and the flow rate of the mixed gas is 2-30 m / s.

[0064] After testing, 100g of potassium superoxide produced by the above process produces 31.5-31.9g of oxygen, 45-80ppm of potassium oxide, no detection of potassium carbonate ~50ppm., and no detection of paraffin oil.

Claims

1. A system for continuously producing potassium superoxide by a three-channel spray combustion method, comprising an oxygen regulating insulation tank (1) and a metal potassium heating insulation high-level tank (2), characterized in that: Also included is a three-channel spray combustion reactor (3); The three-channel spray combustion reactor (3) comprises a central mixed gas pipeline (301), one end of the central mixed gas pipeline (301) is closed and the other end is open, a guide rod (302) is arranged in the central mixed gas pipeline (301), the guide rod (302) is fixed to the closed end of the central pipeline, and a first spiral guide plate (303) is arranged on the guide rod (302); A metallic potassium liquid flow pipeline (305) is sleeved on the outside of the central mixed gas pipeline (301); one end of the metallic potassium liquid flow pipeline (305) is closed and the other end is open; the closed end of the metallic potassium liquid flow pipeline (305) is fixedly mounted on the central mixed gas pipeline (301); and a second spiral guide vane (306) is mounted on the outer wall of the central mixed gas pipeline (301) inside the metallic potassium liquid flow pipeline (305); The first spiral guide vane (303) is arranged from the closed end to a position less than or equal to 1 / 4 of the total length from the open end; the thread lead angle of the first spiral guide vane (303) is 15° to 75°; the second spiral guide vane (306) is arranged from the closed end to a position less than or equal to 1 / 4 of the total length from the open end; the thread lead angle of the second spiral guide vane (306) is 15° to 75°; A guide groove cylinder (308) is mounted on the outer wall of the potassium metal flow pipeline (305) in close contact and fixed manner, and a conical guide hole cylinder (310) and a main mixed gas pipeline (309) are mounted on the outer wall of the guide groove cylinder (308) in sequence from the inside to the outside, one end of the conical guide hole cylinder (310) and the main mixed gas pipeline (309) are closed and the other end is open, and the closed ends of the conical guide hole cylinder (310) and the main mixed gas pipeline (309) are fixedly mounted on the guide groove cylinder (308); a mounting member (314) is also arranged at the bottom of the outer wall of the main mixed gas pipeline (309); The open end of the guide rod (302), the open end of the central mixed gas pipeline (301), the open end of the metallic potassium liquid flow pipeline (305), the open end of the guide groove cylinder (308), the open end of the conical guide hole cylinder (310) and the open end of the main mixed gas pipeline (309) are arranged flush with each other; A plurality of guide grooves (311) are provided on the outer wall of the guide groove cylinder (308) along the axial direction, and the number of the guide grooves (311) is 10 to 30; a plurality of strip-shaped guide holes (312) penetrating the side wall are provided on the side wall of the conical guide hole cylinder (310) along the axial direction, and the number of the guide holes (312) is 12 to 32; The space inside the central mixed gas pipeline (301) is the central mixed gas channel (304); the space between the central mixed gas pipeline (301) and the metallic potassium liquid flow pipeline (305) is the metallic potassium liquid flow channel (307); and the space between the guide groove cylinder (308) and the main mixed gas pipeline (309) is the main mixed gas channel (313); The oxygen regulating and heat-insulating tank (1) is connected to the mixed gas distributor (5) via the mixed gas blower (4); one output branch of the mixed gas distributor (5) is connected to the central mixed gas channel (304) of the three-channel spray combustion reactor (3); and the other output branch of the mixed gas distributor (5) is connected to the main mixed gas channel (313) of the three-channel spray combustion reactor (3); the metal potassium heating and heat-insulating high-level tank (2) is connected to the metal potassium liquid flow channel (307) of the three-channel spray combustion reactor (3) via the metal potassium metering pump (6); The three-channel spray combustion reactor (3) is installed on the top of the reaction tower (7), and the bottom of the reaction tower (7) is connected in sequence to a potassium superoxide collection tank (8), a plurality of cyclone dust collectors (9) connected in series, a heat exchanger (10), a bag dust collector (11) and an exhaust gas collection tank (12); The exhaust gas collecting tank (12) is connected to the oxygen regulating insulation tank (1) via the exhaust gas fan (13) to recover the exhaust gas; A star-shaped discharger (14) is provided at the bottom of the potassium superoxide collecting tank (8).

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