Treatment process and treatment system for radioactive animal carcasses

Abstract

The invention discloses a treatment process and a treatment system for radioactive animal carcasses. The treatment process comprises the following steps: drying and crushing; adding the crushed solid material into a plasma furnace for gasification and pyrolysis to form synthesis gas and residual inorganic matters; heating and melting the residual inorganic matters at high temperature to form a glass liquid layer; and the formed synthesis gas is subjected to secondary high-temperature jet flow combustion so as to be subjected to after-combustion treatment, and the formed flue gas is subjected to purification treatment. The treatment system comprises a drying chamber, a crushing device, a plasma furnace, a secondary combustion chamber and purification treatment equipment. According to the method, animal carcasses are quickly decomposed and recombined into non-toxic and harmless new substances by utilizing a plasma treatment process, inorganic components are molten into glass solidified bodies which are low in leaching rate, high in stability and capable of being permanently treated, and high volume reduction ratio and harmlessness of waste are realized.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power radioactive waste treatment, and in particular to a treatment process and a treatment system for radioactive animal carcasses. Background Art

[0002] In the process of radioactive medicine development and application, a large number of animal carcasses (goats, chickens, mice, etc.) are usually produced due to experimental needs. These animal carcasses are currently temporarily stored in a frozen state. The animal carcasses contain a large amount of C-14 nuclides, which are radioactive waste. These radioactive wastes have caused huge safety hazards and maintenance costs to nuclear medicine units, and urgently need to be harmlessly disposed of.

[0003] At present, the main methods for disposing animal carcasses at home and abroad include landfill, incineration, chemical treatment and fermentation composting. The incineration method has a high degree of harmlessness and reduction, and the heat energy generated can be recycled. It has the advantages of mature and reliable technology and small footprint. Therefore, incineration is widely used internationally to treat dead animal carcasses and their products. However, traditional incineration processes are difficult to meet environmental standards. The flue gas produced contains secondary pollutants such as dust, acidic gases, and dioxins, and there is no particularly good way to deal with the radioactive nuclide C-14.

[0004] In view of this, this patent application is filed. Summary of the invention

[0005] The purpose of the present invention is to provide a treatment process and a treatment system for radioactive animal carcasses, so as to solve the problem that the current treatment methods cannot effectively treat animal carcasses containing the radioactive nuclide C-14.

[0006] The first object of the present invention is to provide a process for treating radioactive animal carcasses, which adopts the following technical scheme: The process includes: Dry and broken; The crushed solid material is added into a plasma furnace for gasification and pyrolysis to form synthesis gas and residual inorganic matter; The remaining inorganic substances are heated and melted at high temperature to form a glass liquid layer; The formed synthesis gas is subjected to secondary high-temperature jet combustion for burnout treatment, and the flue gas formed is purified.

[0007] In an optional embodiment, the drying adopts microwave drying, the drying temperature is 100-120°C; and / or the microwave power is 3kW, the microwave frequency is 2450MHz; and / or the waste gas generated after drying is subjected to secondary high-temperature jet combustion together with the synthesis gas.

[0008] In an optional embodiment, the temperature for gasification and pyrolysis of the crushed solid material is 400-600°C.

[0009] In an optional embodiment, when the inorganic material is melted at high temperature, a plasma high temperature jet is used, and the temperature of the high temperature jet is 1500-2000°C.

[0010] In an optional embodiment, the purification treatment includes primary denitrification, cooling, dust removal, deacidification, secondary denitrification, dehydration, adsorption removal, and heating.

[0011] In an optional embodiment, in the primary denitration process, ammonia water is used to react with nitrogen oxides in the flue gas to denitrate; And / or, the cooling process adopts heat exchange cooling, firstly cooling from 1100°C to 600°C by heat exchange, and then cooling to 175°C by extreme cold; And / or the deacidification process uses sodium hydroxide for deacidification washing; and / or secondary denitration process, using aqueous ammonia; And / or, the adsorption removal is to adsorb and remove nuclides and heavy metals in the tail gas.

[0012] The second object of the present invention is to provide a system for processing radioactive animal carcasses, which adopts the following technical solutions: Including: drying chamber, crushing device, plasma furnace, secondary combustion chamber, purification and treatment equipment; The drying chamber is a microwave oven chamber; The plasma furnace comprises a gasification pyrolysis section and a high-temperature melting section, the gasification pyrolysis section is communicated with the high-temperature melting section, and the high-temperature melting section is provided with a plasma torch A; A plasma torch B is provided in the second combustion chamber; The drying chamber, the crushing device, the plasma furnace, the secondary combustion chamber, and the purification treatment equipment are connected and arranged in sequence, and the drying chamber is communicated with the secondary combustion chamber.

[0013] In an optional embodiment, the gasification pyrolysis section is a vertical section, the high-temperature melting section is a horizontal section, the high-temperature melting section is located on one side of the gasification pyrolysis section, and the height of the gasification pyrolysis section is higher than the high-temperature melting section, so that the remaining inorganic matter obtained after passing through the gasification pyrolysis section falls into the high-temperature melting section by gravity; The bottom of the gasification and pyrolysis section is provided with an inclined section; and / or a thermocouple is provided on the gasification and pyrolysis section; And / or the secondary combustion chamber is provided with a plurality of horizontal annular air inlets.

[0014] In an optional embodiment, the purification treatment equipment includes a first denitrification tower, a heat exchanger, a quenching tower, a dust collector, a deacidification washing tower, a second denitrification tower, a gas-liquid separator, an adsorber, an electric heater, and an induced draft fan arranged in sequence.

[0015] In an optional embodiment, the dust collector is a bag dust collector, and two bag dust collectors are provided and arranged in parallel; The deacidification washing tower is provided with two, namely a primary washing tower and a secondary washing tower, and the primary washing tower and the secondary washing tower are arranged in series; The adsorbers are provided in two numbers and are arranged in parallel.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The present invention uses a plasma treatment process to treat radioactive animal carcasses. The characteristics of plasma high temperature and high energy density are used to quickly decompose and reorganize animal carcasses into non-toxic and harmless new substances. The inorganic components in the waste can be melted into a glass solid body with low leaching rate, high stability and permanent disposal, achieving a high volume reduction ratio and harmlessness of the waste. The pyrolysis rate of animal carcasses treated with the plasma technology of the present invention reaches more than 99%, the treated vitreous body is stable, the secondary waste output is small, the product is clean, and the operability is good, which not only ensures the effectiveness of engineering applications, but also guarantees the safety of disposal of the products after the reaction.

[0017] 2. The processing technology of the present invention adopts microwave heating to pre-treat the animal carcasses, dehydrate and dry thoroughly, heat quickly and efficiently; the heating process can be controlled online in real time; and microwaves can heat the inside and outside of the heated material together, avoiding the cold center phenomenon caused by traditional heating, with small heat loss, uniform heating and high thermal energy utilization rate; at the same time, microwave plasma has a certain catalytic effect on chemical reactions, which can make the reaction proceed at a lower temperature, and pyrolyze and gasify the oil substances contained in some animals in advance.

[0018] 3. Radioactive animals contain a large amount of C-14, with an activity of about 0.03 mCi / kg (1.11×10 6 Bq / kg), in the present invention, concentrated ammonia water is appropriately sprayed in the denitration process, and the flue gas is sprayed to absorb CO2 and produce ammonium bicarbonate, thereby achieving the purpose of decarbonization. The ammonia water decarbonization absorption efficiency reaches 99%, and the absorption capacity is high. C-14, as an attachment of CO2, is simultaneously removed by ammonia water and enters the solution, thereby achieving the purpose of removing nuclides in the tail gas and achieving radioactivity compliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 A schematic structural diagram of the pre-processing part of a radioactive animal carcass processing system provided by the present invention.

[0020] Figure 2 A schematic structural diagram of a system for processing radioactive animal carcasses provided by the present invention.

[0021] In the figure: 1. Plasma furnace; 101. Vertical section; 2. Feed inlet; 3. Refractory material; 4. Plasma furnace exhaust pipe; 501. Plasma torch A; 502. Plasma torch B; 6. Thermocouple A; 7. Thermocouple B; 8. Glass liquid layer; 9. Glass liquid overflow port; 10. Second combustion chamber ash discharge port; 11. Second combustion chamber exhaust port; 121. Horizontal annular air inlet A; 122. Horizontal annular air inlet B; 13. Second combustion chamber; 141. Annular air inlet A ; 142. Annular air inlet B; 15. First denitrification tower; 16. Heat exchanger; 17. Quenching tower; 181. Bag filter A; 182. Bag filter B; 19. Primary washing tower; 20. Secondary washing tower; 21. Second denitrification tower; 22. Gas-liquid separator; 231. Adsorber A; 232. Adsorber B; 24. Electric heater; 25. Induced draft fan; 26. Microwave source; 27. Drying chamber; 28. Crushing device; 29. ​​Baler. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] In the description of the embodiments of the present application, the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" 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 or an electrical 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1: A system for handling radioactive animal carcasses, such as Figure 1 , 2 As shown in , it includes a drying chamber 27, a crushing device 28, a plasma furnace 1, a secondary combustion chamber 13, and a purification treatment equipment which are connected in sequence, and the drying chamber 27 is also connected to the secondary combustion chamber 13.

[0027] Drying chamber 27: It is a microwave oven chamber. A microwave source 26 is installed on the left side of the drying chamber 27, which can input heat continuously and stably. The animal carcasses are dehydrated and dried during the microwave heating process. A large amount of radioactive water vapor and a small amount of oil and gas substances produced enter the main process link (secondary combustion chamber 13); the processed animals inside the drying chamber 27 can rotate horizontally to ensure the uniformity of heating and drying.

[0028] The crushing device 28 crushes the dried animal carcasses into small solid pieces, which then enter the baler 29 for packaging, and finally form 1-2 kg solid bags to enter the next stage.

[0029] Plasma furnace 1: including a gasification pyrolysis section and a high temperature melting section, the gasification pyrolysis section is connected with the high temperature melting section, and the high temperature melting section is provided with a plasma torch A 501; the gasification pyrolysis section is a vertical section 101, and the high temperature melting section is a horizontal section, and the high temperature melting section is located on one side of the gasification pyrolysis section, and the height of the gasification pyrolysis section is higher than the high temperature melting section, so that the remaining inorganic matter obtained after the gasification pyrolysis section falls into the high temperature melting section by gravity, and the plasma furnace 1 is arranged in an L shape as a whole, and the plasma furnace 1 adopts refractory material 3, and a feed port 2 is provided on the top. The dried, crushed and packaged solid material bag of the animal carcass falls into the plasma furnace 1.

[0030] The vertical section 101 is a gasification and pyrolysis section, which includes a drying zone, a pyrolysis zone, and an oxidation zone from top to bottom. The temperature of the gasification and pyrolysis section varies from 400 to 1200°C. In the gasification and pyrolysis layer, most of the organic matter is gasified and pyrolyzed into synthesis gas (CO+H2), and then the synthesis gas enters the subsequent secondary combustion chamber 13. Two thermocouples are also provided on the vertical section 101, namely thermocouple A6 and thermocouple B7, to measure and monitor the bed temperature. A glass liquid overflow port 9 is also provided on the horizontal section, which is usually sealed by a plug. When the glass liquid layer 8 formed by the melting of the slag inside the molten pool reaches a certain height and the molten pool liquid level exceeds the overflow port by a large amount, the overflow port is opened and the glass liquid flows out from the glass liquid overflow port 9.

[0031] Since animals contain a large amount of bone material, the remaining inorganic matter (bone ash) after the reaction in the gasification pyrolysis layer falls to the bottom of the vertical section 101 and enters the horizontal high-temperature melting section of the plasma furnace 1. The plasma torch A501 above the high-temperature melting section generates a high-temperature jet (adjustable from 1500 to 2000°C) to directly heat and melt the inorganic matter coming from the vertical section 101, and then form a glass liquid layer 8. This is a safe and stable medium that solidifies nuclides and heavy metals inside the vitreous body, and preliminarily achieves the effect of harmless volume reduction of radioactive waste.

[0032] Secondary combustion chamber 13: The synthesis gas coming out of the plasma furnace 1 enters the secondary combustion chamber 13 through the plasma furnace exhaust pipe 4 for secondary combustion. A plasma torch B502 is arranged inside the secondary combustion chamber 13. The high-temperature jet generated directly burns the synthesis gas coming from the plasma furnace 1 and burns out its combustible components to form flue gas, which is discharged from the secondary combustion chamber exhaust port 11.

[0033] Purification treatment equipment: purifies the flue gas flowing out of the secondary combustion chamber 13, such as denitrification treatment, dust removal treatment, purification adsorption treatment.

[0034] The present invention uses a plasma treatment process to treat radioactive animal carcasses, and uses the characteristics of high temperature and high energy density of plasma to quickly decompose and reorganize animal carcasses into non-toxic and harmless new substances. For the inorganic components in the waste, they can be melted into a glass solid body with low leaching rate, high stability, and permanent disposal, thereby achieving a high volume reduction ratio and harmlessness of the waste. The pyrolysis rate of animal carcasses treated with the plasma technology of the present invention reaches more than 99%, the treated vitreous body is stable, the secondary waste output is small, the product is clean, and the operability is good, which not only ensures the effectiveness of engineering applications, but also guarantees the disposal safety of the products after the reaction.

[0035] Furthermore, an inclined section is provided at the bottom of the gasification and pyrolysis section to facilitate the glass liquid on the right to flow to the left under the action of gravity, making it easier to discharge. A horizontal annular air inlet A121 and a horizontal annular air inlet B122 are provided on the connecting pipe between the plasma furnace 1 and the secondary combustion chamber 13, and the waste gas (water vapor and part of the oil gas) generated from the pre-treatment system (drying chamber 27) enters the secondary combustion chamber 13 from here for combustion treatment.

[0036] Preferably, a plurality of horizontal annular air inlets are provided at the middle side wall of the secondary combustion chamber 13, which are annular air inlet A141 and annular air inlet B142. The air inlet is opened horizontally in the middle of the secondary combustion chamber 13 to allow air to enter, thereby increasing the oxygen required for the combustion of the combustible components. In actual engineering use, 4 to 6 annular air inlets can be provided as needed to improve the treatment effect. Finally, the flue gas completely burned in the secondary combustion chamber 13 is discharged from the secondary combustion chamber exhaust port 11 to the downstream tail gas purification treatment system, and a small amount of ash generated in the process is regularly discharged through the secondary combustion chamber ash discharge port 10 at the bottom.

[0037] The purification treatment equipment of the present invention comprises a first denitration tower 15, a heat exchanger 16, a quenching tower 17, a dust collector, a deacidification washing tower, a second denitration tower 21, a gas-liquid separator 22, an adsorber, an electric heater 24, and an induced draft fan 25 which are arranged in sequence.

[0038] The first denitrification tower 15: ammonia water is used for denitrification. After the flue gas comes out of the secondary combustion chamber 13 (1100°C), it first passes through the SNCR (i.e. the first denitrification tower 15), where in-furnace denitrification is carried out, that is, ammonia water is sprayed from the inside to react with nitrogen oxides to produce nitrogen and water.

[0039] Heat exchanger 16: The flue gas after denitrification enters the heat exchanger 16 for cooling, from 1100°C to 600°C.

[0040] Rapid cooling tower 17: The flue gas from the heat exchanger 16 then enters the rapid cooling tower 17, where the high-temperature flue gas is cooled to 175°C in a relatively short period of time, thus avoiding the secondary production area of ​​dioxins.

[0041] Dust collector: It is a bag dust collector. The flue gas after extremely cooling down then enters the bag dust collector for dust removal. Redundancy configuration is considered here. Two bag dust collectors are set and arranged in parallel, namely bag dust collector A 181 and bag dust collector B 182.

[0042] Deacidification washing tower: The flue gas after dust removal enters the deacidification washing tower and is deacidified using NaOH solution; two deacidification washing towers are provided, namely a primary washing tower 19 and a secondary washing tower 20, which are arranged in series to form a two-stage washing.

[0043] Second denitrification tower 21: After washing, the flue gas enters the denitrification system SCR (i.e., the second denitrification tower 21), where an appropriate amount of ammonia water is sprayed and denitrified with a catalyst. At the same time, because radioactive animals contain a large amount of C-14, the activity is about 0.03mCi / kg (1.11×106Bq / kg). Concentrated ammonia water is sprayed on the flue gas to absorb CO2 and produce ammonium bicarbonate, thereby achieving the purpose of decarbonization. The ammonia water decarbonization absorption efficiency reaches 99%, and the absorption capacity is high. C-14, as an attachment of CO2, is simultaneously removed by ammonia water and enters the solution, thereby achieving the purpose of removing nuclides in the tail gas and achieving radioactivity standards.

[0044] Gas-liquid separator 22: used to dehydrate and dry the tail gas to obtain dry flue gas.

[0045] Adsorbers: Two are provided and arranged in parallel, namely, adsorber A 231 and adsorber B 232; they are used to adsorb and remove the residual nuclides and heavy metals in the tail gas.

[0046] Finally, the flue gas after adsorption and removal is heated by the electric heater 24, and then passes through the induced draft fan 25 to meet the emission standards.

[0047] The process of treating radioactive animal carcasses using the treatment system of the present invention includes the following steps: (1) Drying and crushing; The drying is carried out in a drying chamber 27, the drying temperature is 100-120°C, the microwave power is 3kW, and the microwave frequency is 2450MHz.

[0048] The dried carcass is put into a crushing device 28 to be crushed into small solid pieces.

[0049] (2) Gasification, pyrolysis and high temperature melting; The crushed solid material is added into the plasma furnace 1 for gasification and pyrolysis to form synthesis gas and residual inorganic matter; wherein the temperature for gasification and pyrolysis of the crushed solid material is 400-600°C.

[0050] Then, the remaining inorganic substances are heated and melted at high temperature in the plasma furnace 1 to form a glass liquid layer 8. When the inorganic substances are melted at high temperature, a plasma high temperature jet is used, and the temperature of the high temperature jet is 1500-2000°C.

[0051] (3) Performing secondary high-temperature jet combustion on the synthesis gas; The synthesis gas coming out of the plasma furnace 1 enters the secondary combustion chamber 13 and is subjected to secondary combustion by utilizing the plasma high temperature jet to perform a burnout treatment to form flue gas.

[0052] (4) Purify the flue gas; The flue gas is subjected to primary denitration, cooling, dust removal, deacidification, secondary denitration, dehydration, adsorption removal, and heating treatment in sequence; In the primary denitrification process, ammonia water is used to react with nitrogen oxides in the flue gas to denitrify; In the cooling process, heat exchange is used to cool down the temperature. First, the temperature is cooled down from 1100°C to 600°C in the heat exchanger 16, and then enters the quenching tower 17 for extreme cooling to 175°C. Then it enters the bag filter for dust removal, enters the secondary washing for sodium hydroxide deacidification washing, and enters the second denitrification tower 21 for ammonia water denitrification treatment; Then it enters the gas-liquid separation tower for dehydration treatment, enters the adsorber to remove radionuclides and heavy metals in the tail gas, enters the electric heater 24 for heating, and enters the induced draft fan 25 for discharge.

[0053] At this point, the disposal of radioactive animal carcasses is completed.

[0054] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A process for treating radioactive animal carcasses, characterized in that: The process includes: Dry and broken; The crushed solid material is added into a plasma furnace (1) for gasification and pyrolysis to form synthesis gas and residual inorganic matter; The remaining inorganic substances are heated and melted at a high temperature to form a glass liquid layer (8); The formed synthesis gas is subjected to secondary high-temperature jet combustion for burnout treatment, and the flue gas formed is purified.

2. The process for treating radioactive animal carcasses according to claim 1, characterized in that: The drying adopts microwave drying, the drying temperature is 100-120°C; and / or the microwave power is 3kW, the microwave frequency is 2450MHz; and / or the waste gas generated after drying is subjected to secondary high-temperature jet combustion together with the synthesis gas.

3. The process for treating radioactive animal carcasses according to claim 1, characterized in that: The temperature for gasification and pyrolysis of the crushed solid material is 400-600°C.

4. The process for treating radioactive animal carcasses according to claim 1, characterized in that: When inorganic substances are melted at high temperature, a plasma high temperature jet is used, and the temperature of the high temperature jet is 1500-2000°C.

5. The process for treating radioactive animal carcasses according to claim 1, characterized in that: The purification treatment includes primary denitrification, cooling, dust removal, deacidification, secondary denitrification, dehydration, adsorption removal and heating.

6. The process for treating radioactive animal carcasses according to claim 5, characterized in that: In the primary denitration process, ammonia water is used to react with nitrogen oxides in the flue gas to denitrate; And / or, the cooling process adopts heat exchange cooling, firstly cooling from 1100°C to 600°C by heat exchange, and then cooling to 175°C by extreme cold; And / or the deacidification process uses sodium hydroxide for deacidification washing; and / or secondary denitration process, using aqueous ammonia; And / or, the adsorption removal is to adsorb and remove nuclides and heavy metals in the tail gas.

7. A processing system for implementing the processing technology for treating radioactive animal carcasses as claimed in any one of claims 1 to 6, characterized in that: include: Drying chamber (27), crushing device (28), plasma furnace (1), secondary combustion chamber (13), purification treatment equipment; The drying chamber (27) is a microwave oven chamber; The plasma furnace (1) comprises a gasification pyrolysis section and a high-temperature melting section, the gasification pyrolysis section is in communication with the high-temperature melting section, and the high-temperature melting section is provided with a plasma torch A (501); A plasma torch B (502) is provided in the secondary combustion chamber (13); The drying chamber (27), the crushing device (28), the plasma furnace (1), the secondary combustion chamber (13), and the purification treatment equipment are connected and arranged in sequence, and the drying chamber (27) is in communication with the secondary combustion chamber (13).

8. The system for handling radioactive animal carcasses according to claim 7, characterized in that: The gasification and pyrolysis section is a vertical section (101), and the high-temperature melting section is a horizontal section. The high-temperature melting section is located on one side of the gasification and pyrolysis section. The height of the gasification and pyrolysis section is higher than that of the high-temperature melting section, so that the remaining inorganic matter obtained after passing through the gasification and pyrolysis section falls into the high-temperature melting section by gravity; The bottom of the gasification and pyrolysis section is provided with an inclined section; and / or a thermocouple is provided on the gasification and pyrolysis section; And / or the secondary combustion chamber (13) is provided with a plurality of horizontal annular air inlets.

9. A radioactive animal carcass treatment system according to claim 7, characterized in that: The purification treatment equipment comprises a first denitration tower (15), a heat exchanger (16), a quenching tower (17), a dust collector, a deacidification washing tower, a second denitration tower (21), a gas-liquid separator (22), an adsorber, an electric heater (24), and an induced draft fan (25) which are arranged in sequence.

10. A radioactive animal carcass treatment system according to claim 9, characterized in that: The dust collector is a bag dust collector, and two bag dust collectors are provided and arranged in parallel; The deacidification washing tower is provided with two, namely a primary washing tower (19) and a secondary washing tower (20), and the primary washing tower (19) and the secondary washing tower (20) are arranged in series; The adsorbers are provided in two numbers and are arranged in parallel.

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