Incineration pretreatment system for radioactive combustible waste

Abstract

The invention discloses an incineration pretreatment system for radioactive combustible waste, and relates to the technical field of radioactive waste treatment.The system is characterized in that a drying unit is used for dehydrating wet waste to form dry material flow, a crushing unit is used for crushing the dry waste into small sizes, and a mixing unit is used for mixing liquid waste with diesel oil or kerosene; after the viscosity and the heat value are adjusted, feeding into a pyrolysis combustion unit; the hot melting compression unit is used for compressing the dry and wet waste into waste bags; the storage unit is used for providing a waste bag temporary storage area and feeding waste bags into the feeding unit; the feeding unit is used for feeding waste bags into the pyrolysis combustion unit; the pyrolysis combustion unit is used for carrying out pyrolysis combustion on the waste bag and the combustible liquid waste mixture; and the tail gas treatment unit is used for purifying tail gas generated by pyrolysis combustion. The system provided by the invention can be compatible with various common dry and wet combustible wastes and combustible liquid wastes of nuclear facilities, corresponding pretreatment procedures are carried out, and formed waste bags and waste material flows meet incineration treatment requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to an incineration pretreatment system for radioactive combustible waste. Background Art

[0002] Nuclear facilities such as military industry, scientific research, experiments and nuclear power plants generate a large amount of radioactive waste during operation and maintenance, of which combustible waste accounts for a large proportion (about 50%), such as wet resin, wood, work clothes, isolation clothes, shoe covers, gloves, other plastic and rubber waste, waste oil, waste organic solvents, etc. The average specific activity of most combustible waste is ≤4×10 4 Bq / kg range. As one of the earliest developed radioactive waste volume reduction technologies, incineration is very suitable for treating these low-level radioactive wastes. It can not only achieve a significant volume reduction (volume reduction ratio can reach 80-120), but also achieve inorganicization of the waste, which is conducive to final disposal. Therefore, radioactive combustible waste incineration technology is widely used in the United States, France, Germany, Japan and other countries, and has become one of the main technologies for treating radioactive waste.

[0003] At present, my country has established several incineration facilities for the treatment of radioactive combustible solid waste, and has achieved relatively good social and economic benefits in the actual application process. Due to the variety of types and forms of combustible waste sources, including wet waste, dry waste and liquid waste, necessary waste pretreatment procedures must be carried out to meet the acceptance requirements of the incineration system before they can be accepted and processed. For example, wet wastes such as wet resins contain more water. Resins with a large moisture content will inevitably introduce too much water when put into the incineration system, thereby affecting the incineration effect. Therefore, evaporation and dehydration treatment must be carried out; solid dry wastes such as wood, work clothes, isolation clothing, shoe covers, gloves, and other plastic and rubber wastes are often temporarily stored in the form of barreled bulk or waste in packaging bags. Therefore, manual secondary disassembly and packaging and bagging must be carried out to form waste packages that can be accepted by the incineration system. The liquid wastes such as waste oil and waste organic solvents are of various types and have different uses. Their parameters such as viscosity and calorific value are often difficult to meet the treatment requirements of spray incineration, so the necessary viscosity and calorific value adjustment process must be carried out. Therefore, in the actual application of incineration technology, the pretreatment of various types of waste requires a lot of manpower costs, and is also the part with high labor intensity and exposure level, which reduces the advancement and automation level of the entire incineration technology. Summary of the invention

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide an incineration pretreatment system for radioactive combustible waste. The system is compatible with various types of dry and wet combustible wastes and combustible liquid wastes commonly found in nuclear facilities, and the corresponding pretreatment procedures are carried out to form waste packages and waste flows that meet the incineration treatment requirements.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An incineration pretreatment system for radioactive combustible waste includes: a drying unit, a crushing unit, a mixing unit, a hot melt compression unit, a material storage unit, a feeding unit, a pyrolysis combustion unit and a tail gas treatment unit, wherein:

[0007] The outlet of the drying unit is connected to the hot melt compression unit, and is used to remove moisture from the wet combustible waste to form a dry stream, and the dry stream is fed into the hot melt compression unit;

[0008] The outlet of the crushing unit is connected to the hot melt compression unit, and is used to crush the dry combustible waste into small-sized streams, and put the small-sized streams into the hot melt compression unit;

[0009] The outlet of the mixing unit is connected to the pyrolysis combustion unit, and is used to receive the combustible liquid waste, mix the liquid waste with diesel or kerosene, adjust its viscosity and calorific value, and then input it into the pyrolysis combustion unit;

[0010] The hot melt compression unit is used to receive the dry and wet wastes from the drying unit and the crushing unit, and compress the dry and wet wastes into waste bags by hot melt compression;

[0011] The inlet of the storage unit is connected to the hot melt compression unit, and the outlet is connected to the feeding unit, and is used to receive the waste packages produced by the hot melt compression unit, provide a temporary storage area for the waste packages, and realize the automatic material preparation and storage functions; and is also used to transport the waste packages into the feeding unit according to the feeding needs, and feed the waste packages into the pyrolysis combustion unit through the feeding unit;

[0012] The pyrolysis and combustion unit is used to receive the waste packages from the feeding unit and the combustible liquid waste mixture from the mixing unit, and perform pyrolysis and combustion on various types of waste;

[0013] The inlet of the tail gas treatment unit is connected to the pyrolysis combustion unit, and is used for cooling, dust removal and purification of the corresponding tail gas generated by the pyrolysis combustion unit to achieve standard emission of the tail gas.

[0014] Furthermore, as described above, the incineration pretreatment system for radioactive combustible waste also includes an air replacement unit, which is connected to the drying unit, the crushing unit, the hot melt compression unit and the pyrolysis combustion unit, and introduces ambient air to replace gas in parts of the entire unit where gas escape is likely to occur.

[0015] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the drying form of the drying unit includes hot air drying, microwave drying or electric drying, and a first feed control mechanism is arranged between the drying unit and the hot melt compression unit to ensure that the amount of wet combustible waste entering the hot melt compression unit is controllable and measurable.

[0016] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the crushing unit includes a crusher, and a second feed control mechanism is provided between the crushing unit and the hot melt compression unit to ensure that the amount of dry combustible waste entering the hot melt compression unit is controllable and measurable.

[0017] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the mixing unit adopts a mixing form of mixing and stirring in a tank, and realizes controllable and measurable waste liquid and waste feed amounts through pumps, valves and flow meters.

[0018] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the hot melt compression unit has the function of controlling the temperature and compression amount of the hot melt compression process, and the waste package formed by the hot melt compression unit is a waste package with a regular and uniform appearance, a certain strength, and is easy to transport.

[0019] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, a certain number of evenly distributed through-pieces are provided in the hot-melt compression mold of the hot-melt compression unit, or compressed air is introduced into the hot-melt compression mold during the hot-melt compression molding process, so that the formed waste package has certain voids and pores.

[0020] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the storage unit has the function of displaying the current storage amount of the waste package, so as to ensure continuous feeding of the incineration treatment.

[0021] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the feeding unit adopts a sealing form of multiple plug-in plates to ensure that the furnace environment is not connected to the outside air during the feeding process, thereby ensuring the safety of operation.

[0022] Furthermore, in the incineration pretreatment system for radioactive combustible waste as described above, the pyrolysis combustion unit and the tail gas treatment unit adopt an equipment combination of a pyrolysis furnace, a combustion furnace, a cooler, a dust collector and an acid remover, as well as other conventionally available equipment forms, to achieve effective incineration of various types of waste and standard emission of incineration tail gas.

[0023] Compared with the prior art, the incineration pretreatment system for radioactive combustible waste provided by the present invention has the following beneficial effects:

[0024] The present invention can be used for the pretreatment process of various radioactive combustible wastes before incineration, avoiding the secondary disassembly and packaging process of the wastes, and the waste bags formed have a regular and uniform appearance and have a good incineration treatment effect;

[0025] The present invention is compatible with various types of dry and wet combustible wastes and combustible liquid wastes commonly found in nuclear facilities, has a complete process, is easy to operate, can significantly reduce human intervention, has a high degree of automation and safety, and improves waste pretreatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention provides a framework diagram of an incineration pretreatment system for radioactive combustible waste in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Figure 1 A system framework diagram for radioactive combustible waste incineration pretreatment provided in an embodiment of the present invention is shown, the system includes a drying unit 1, a crushing unit 2, a mixing unit 3, a hot melt compression unit 4, a storage unit 5, a feeding unit 6, a pyrolysis combustion unit 7, an exhaust gas treatment unit 8 and an air replacement unit 9, and the structure and function of each unit are described in detail below.

[0029] Drying unit 1: Its outlet is connected to the hot melt compression unit 4, which is used to receive wet combustible waste commonly found in nuclear facilities, such as wet resin, etc., to remove moisture from the wet waste, form a dry stream, and then put it into the hot melt compression unit 4 of the subsequent process. Specifically, the drying form of the drying unit 1 can be selected from hot air drying, microwave drying, or electric drying, etc., so as to remove moisture from the waste while being easy to operate and simple in equipment. The processing capacity of the drying unit 1 matches the subsequent hot melt compression and pyrolysis combustion requirements.

[0030] Crushing unit 2: Its outlet is connected to the hot melt compression unit 4, and is used to receive common dry combustible wastes in nuclear facilities, such as wood, work clothes, isolation clothes, shoe covers, gloves, and other plastic and rubber wastes, etc., and crush the dry wastes into small sizes, and the small-size logistics are then put into the hot melt compression unit 4 of the subsequent process. Preferably, the crushing form of the crushing unit 2 is a crusher, which has a good crushing effect and strong applicability, and can effectively process various types of wastes and wastes in various packaging forms, such as barreled bulk or waste in packaging bags. The size of the crushed pieces meets the requirements of the subsequent hot melt compression unit 4. The processing capacity of the crushing unit 2 matches the subsequent hot melt compression and pyrolysis combustion requirements.

[0031] Mixing unit 3: Its outlet is connected to the pyrolysis combustion unit 7, which is used to receive the flammable liquid waste commonly found in nuclear facilities, such as waste oil, waste organic solvents, etc., and mix the liquid waste to be treated with diesel or kerosene, adjust its viscosity and calorific value, and then input it into the pyrolysis combustion unit 7 of the subsequent process for incineration treatment. Specifically, the mixing form of the mixing unit 3 can be mixing and stirring in a tank, and the feed amount of waste liquid and waste can be controlled and measured through pumps, valves, flow meters, etc. The processing capacity of the mixing unit 3 matches the subsequent pyrolysis combustion requirements.

[0032] Hot melt compression unit 4: Its inlet is connected to the drying unit 1 and the crushing unit 2 respectively, and is used to receive dry and wet waste from the drying unit 1 and the crushing unit 2, and form waste packages with regular and uniform appearance, certain strength and convenient transportation through hot melt compression, and can control the temperature, compression amount and other parameters of the hot melt compression process. At the same time, in order to facilitate the subsequent pyrolysis and combustion of the waste package and ensure a better incineration treatment effect, a certain number of evenly distributed penetrations are set in the hot melt compression mold of the hot melt compression unit 4, or compressed air is introduced into the hot melt compression mold during the hot melt compression molding process, so that the formed waste package has certain cavities and pores, which is conducive to the full contact and reaction between the waste material and the air in the subsequent pyrolysis and combustion process. In addition, a feed control mechanism, such as a screw conveyor, is provided between the drying unit 1 and the hot melt compression unit 4 to ensure that the amount of wet combustible waste entering the hot melt compression unit 4 is controllable and measurable; a feed control mechanism, such as baffle conveying and weighing, is also provided between the crushing unit 2 and the hot melt compression unit 4 to ensure that the amount of dry combustible waste entering the hot melt compression unit 4 is controllable and measurable. The feed amount of the drying unit 1 and the crushing unit 2 is controlled and metered by different forms of feed control mechanisms to ensure that the components of the waste package formed are appropriate. The processing capacity of the hot melt compression unit 4 matches the subsequent pyrolysis and combustion requirements.

[0033] Storage unit 5: Its inlet is connected to the hot melt compression unit 4, and is used to receive the waste packages produced by the hot melt compression unit 4, provide a temporary storage area for the waste packages, and realize the automatic material preparation and storage functions. The storage unit 5 can display the current waste package storage to ensure continuous feeding of the incineration process. Specifically, the storage unit 5 can adopt a belt or partition structure, which is convenient for the storage of waste packages and can realize the connection and transportation of upstream and downstream units.

[0034] The feeding unit 6: its inlet is connected to the storage unit 5, and is used to receive the waste packages to be processed delivered by the storage unit 5, and feed them into the subsequent pyrolysis combustion unit 7 for incineration treatment, and realize the feeding metering of the waste packages. Specifically, the feeding unit 6 can adopt a sealing form of multiple plug plates to ensure that the furnace environment is not connected to the outside air during the feeding process, thereby ensuring the safety of operation.

[0035] Pyrolysis and combustion unit 7: Its inlet is connected to the feeding unit 6 and the mixing unit 3, and is used for the pyrolysis and combustion of the above-mentioned waste packages and combustible liquid wastes. The specific form of the pyrolysis and combustion unit 7 can be a combination of a pyrolysis furnace, a combustion furnace, a cooler, a dust collector and an acid remover, as well as other conventionally available equipment forms, to achieve effective incineration of various types of wastes.

[0036] Tail gas treatment unit 8: its inlet is connected to the pyrolysis combustion unit 7, and is used to cool, remove dust and purify the corresponding tail gas generated by the pyrolysis combustion unit 7 to achieve standard emission of tail gas.

[0037] Air replacement unit 9: connected to the drying unit 1, crushing unit 2, hot melt compression unit 4 and pyrolysis combustion unit 7, and replaces the gas in the parts of the entire unit where gas escape is prone to occur through the introduction of ambient air, such as water vapor evaporated from the drying unit 1, dust aerosol generated by the crushing unit 2, and harmful gases volatilized at a certain temperature by the hot melt compression unit 4, etc., and the replaced gas is transported to the pyrolysis combustion unit 7 as combustion-supporting wind, so that the unit does not generate additional exhaust gas, thereby reducing the burden of exhaust gas treatment.

[0038] The method flow of using the above system provided by the present invention to carry out incineration pretreatment of radioactive combustible waste includes the following steps:

[0039] S1. The moisture in the wet combustible waste is removed by a drying unit to form a dry logistics; the dry combustible waste is crushed by a crushing unit to form a small-sized logistics.

[0040] Common wet combustible wastes in nuclear facilities, such as wet resin, etc., enter the drying unit 1, and the water in the waste is removed by hot air drying, microwave drying and electric heating drying, etc., to form dry logistics and enter the subsequent hot melt compression unit 4, wherein a feed control mechanism, such as a screw conveyor, etc., is set between the drying unit 1 and the hot melt compression unit 4, so as to ensure that the amount of wet combustible waste entering the hot melt compression unit 4 is controllable and measurable; at the same time, common dry combustible wastes in nuclear facilities, such as wood, work clothes, isolation clothes, shoe covers, gloves, other plastic and rubber wastes, etc., enter the crushing unit 2, and form small-sized logistics through the crusher and then enter the subsequent hot melt compression unit 4. The size of the crushed materials meets the requirements of the subsequent hot melt compression unit 4. Similarly, a feed control mechanism, such as partition conveying and weighing, etc., is set between the crushing unit 2 and the hot melt compression unit 4, so as to ensure that the amount of dry combustible waste entering the hot melt compression unit 4 is controllable and measurable. The processing capacity of the drying unit 1 and the crushing unit 2 matches the requirements of the subsequent hot melt compression and pyrolysis combustion.

[0041] S2. The dried wet waste and the crushed dry waste enter the hot melt compression unit 4 and are formed into waste packages by hot melt compression.

[0042] Since plastic technical waste accounts for the largest proportion of radioactive combustible waste in nuclear facilities, there are a lot of plastic products in the waste that needs to be processed, and the proportion can even reach more than 60wt%. A large amount of plastic will be beneficial to the effect and quality of waste hot melt compression, and it is convenient to form a waste package with a regular and uniform appearance and a certain strength, which is convenient for transportation. It should be noted that the hot melt compression unit 4 is different from the conventional hot melt compression unit in that the purpose is to form a waste package that can be transported, rather than pursuing a volume reduction compression effect. On the contrary, a large volume reduction ratio means that the waste package is too dense, and the waste material is difficult to contact and react with air, which is not conducive to subsequent incineration. Therefore, the hot melt compression unit 4 should be able to effectively control the temperature and compression amount during the waste package molding process, so that the waste package molding can be transported and the compression amount is small; at the same time, in order to further ensure a better subsequent incineration treatment effect, the hot melt compression mold can be provided with a certain number of evenly distributed penetrations, or compressed air can be introduced during the molding process, so that the formed waste package has certain cavities and pores, which is conducive to the waste pyrolysis and combustion process. The processing capacity of the hot melt compression unit 4 matches the subsequent pyrolysis and combustion requirements.

[0043] S3. The waste packages formed after hot melting and compression enter the material storage unit 5 for temporary storage and preparation, and the current storage amount of the waste packages is displayed through the material storage unit 5 to ensure continuous feeding of the incineration process.

[0044] S4. When feeding is required, the waste bag in the storage unit 5 is transported to the feeding unit 6, and the waste bag is fed into the pyrolysis combustion unit 7 through the feeding unit 6 for incineration.

[0045] When feeding is needed, the waste enters the feeding unit 6 through belt conveyor or the like, and is fed into the subsequent pyrolysis combustion unit 7 through the corresponding feeding mechanism to achieve incineration treatment, and to achieve waste bag feeding metering. The feeding structure can be sealed in the form of multiple plug-in plates to ensure that the furnace environment is not connected to the outside air during the feeding process, thereby ensuring the safety of operation.

[0046] S5. The waste is effectively incinerated by the pyrolysis combustion unit 7.

[0047] After the waste package enters the pyrolysis combustion unit 7, the waste is effectively incinerated through pyrolysis furnaces, combustion furnaces and other equipment. At the same time, the common combustible liquid wastes in nuclear facilities, such as waste oil, waste organic solvents, etc., enter the mixing unit 3, and a certain amount of diesel or kerosene is added through mixing and stirring in the tank to adjust the viscosity and calorific value of the liquid waste to be treated. After meeting the treatment requirements of subsequent spray incineration, it is measured and input into the pyrolysis combustion unit 7 through pumps, valves and flow meters, etc., to ensure that the amount of liquid waste entering the pyrolysis combustion unit 7 is controllable and measurable, so as to achieve effective incineration of liquid waste. In addition, the pyrolysis combustion unit 7 is also connected to the air replacement unit 9, which receives the replacement gas as combustion-supporting wind, and effectively treats the replacement gas while promoting the incineration of the waste.

[0048] S6. The corresponding tail gas generated by the incineration is cooled, dusted and purified by the tail gas treatment unit 8 to achieve tail gas emission that meets the standards.

[0049] The corresponding tail gas generated by the incineration enters the tail gas treatment unit 8, and is cooled, dusted and purified by equipment such as a cooler, a dust collector and an acid remover, so as to finally achieve standard emission of the tail gas.

[0050] In addition, during the operation of the radioactive combustible waste incineration pretreatment unit, a certain amount of waste gas will inevitably be generated, such as the water vapor generated by the drying unit 1 when the wet waste evaporates, the dust and aerosol generated during the crushing of the dry waste by the crushing unit 2, and the volatile harmful gas generated by the melting and compression unit 4 during the waste heating and compression stage. The long-term presence of the above waste in the unit will harm the surrounding environment and the health of the operators, and is not conducive to the stable operation of the unit. Therefore, an air replacement unit 9 is set to connect the drying unit 1, the crushing unit 2, the hot melt compression unit 4 and the pyrolysis combustion unit 7, and the above waste gas is replaced by gas through the introduced ambient air, and the replaced gas is transported to the pyrolysis combustion unit 7 as combustion-supporting wind, so that the unit does not generate additional waste gas, reducing the burden of tail gas treatment.

[0051] The incineration pretreatment system for radioactive combustible waste provided by the present invention can be used for the pretreatment process of various radioactive combustible wastes before incineration, avoiding the secondary disassembly and packaging process of the waste, and the waste bags formed have a regular and uniform appearance, and ensure a good incineration treatment effect; at the same time, the system and method can be compatible with the treatment of various dry and wet combustible wastes and combustible liquid wastes commonly used in nuclear facilities, with a complete process, convenient operation, less manual intervention, a high degree of automation, good safety, high waste pretreatment efficiency, and good creativity and practicality.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A system for incineration pretreatment of radioactive combustible waste, It is characterized in that The system comprises: a drying unit (1), a crushing unit (2), a mixing unit (3), a hot melt compression unit (4), a material storage unit (5), a feeding unit (6), a pyrolysis and combustion unit (7) and an exhaust gas treatment unit (8), wherein: The outlet of the drying unit (1) is connected to the hot melt compression unit (4) and is used to remove moisture from the wet combustible waste to form a dry stream, and the dry stream is fed into the hot melt compression unit (4); The outlet of the crushing unit (2) is connected to the hot melt compression unit (4) and is used to crush the dry combustible waste into small-sized streams and put the small-sized streams into the hot melt compression unit (4); The outlet of the mixing unit (3) is connected to the pyrolysis combustion unit (7) and is used to receive combustible liquid waste, mix the liquid waste with diesel or kerosene, adjust the viscosity and calorific value thereof, and then input the liquid waste into the pyrolysis combustion unit (7); The hot melt compression unit (4) is used to receive the dry and wet wastes from the drying unit (1) and the crushing unit (2), and compress the dry and wet wastes into waste bags by hot melt compression; The inlet of the storage unit (5) is connected to the hot melt compression unit (4), and the outlet is connected to the feeding unit (6), and is used to receive the waste packages produced by the hot melt compression unit (4), provide a temporary storage area for the waste packages, and realize automatic material preparation and storage functions; and is also used to transport the waste packages into the feeding unit (6) according to feeding needs, and feed the waste packages into the pyrolysis combustion unit (7) through the feeding unit (6); The pyrolysis and combustion unit (7) is used to receive the waste packages from the feeding unit (6) and the combustible liquid waste mixture from the mixing unit (3), and to perform pyrolysis and combustion on various types of waste; The inlet of the tail gas treatment unit (8) is connected to the pyrolysis combustion unit (7) and is used to cool, remove dust and purify the corresponding tail gas generated by the pyrolysis combustion unit (7) to achieve standard emission of the tail gas.

2. The incineration pretreatment system for radioactive combustible waste according to claim 1, It is characterized in that The system further comprises an air replacement unit (9), which is connected to the drying unit (1), the crushing unit (2), the hot melt compression unit (4) and the pyrolysis combustion unit (7), and introduces ambient air to replace gas in the parts of the entire unit where gas escape is likely to occur.

3. The incineration pretreatment system for radioactive combustible waste according to claim 2, It is characterized in that The drying form of the drying unit (1) includes hot air drying, microwave drying or electric drying, and a first feed control mechanism is provided between the drying unit (1) and the hot melt compression unit (4) to ensure that the amount of wet combustible waste entering the hot melt compression unit (4) is controllable and measurable.

4. The incineration pretreatment system for radioactive combustible waste according to claim 3, It is characterized in that The crushing unit (2) comprises a crusher, and a second feed control mechanism is provided between the crushing unit (2) and the hot melt compression unit (4) to ensure that the amount of dry combustible waste entering the hot melt compression unit (4) is controllable and measurable.

5. The incineration pretreatment system for radioactive combustible waste according to claim 4, It is characterized in that The mixing unit (3) adopts a mixing form of mixing and stirring in a tank, and realizes controllable and measurable waste liquid and waste feed amounts through a pump, a valve and a flow meter.

6. The incineration pretreatment system for radioactive combustible waste according to any one of claims 2 to 5, It is characterized in that The hot melt compression unit (4) has the function of controlling the temperature and compression amount of the hot melt compression process. The waste bag formed by the hot melt compression unit (4) is a waste bag with a regular and uniform appearance, a certain strength and easy transportation.

7. The incineration pretreatment system for radioactive combustible waste according to claim 6, It is characterized in that A certain number of evenly distributed penetrations are arranged in the hot melt compression mold of the hot melt compression unit (4), or compressed air is introduced into the hot melt compression mold during the hot melt compression molding process, so that the formed waste bag has certain cavities and pores.

8. The incineration pretreatment system for radioactive combustible waste according to claim 7, It is characterized in that The material storage unit (5) has the function of displaying the current storage amount of the waste package, and is used to ensure continuous material feeding for incineration treatment.

9. The incineration pretreatment system for radioactive combustible waste according to claim 8, It is characterized in that The feeding unit (6) adopts a sealing form of multiple plug-in plates to ensure that the furnace environment is not connected to the outside air during the feeding process, thereby ensuring the safety of operation.

10. The incineration pretreatment system for radioactive combustible waste according to claim 8 or 9, It is characterized in that The pyrolysis combustion unit (7) and the tail gas treatment unit (8) adopt an equipment combination of a pyrolysis furnace, a combustion furnace, a cooler, a dust collector and an acid remover, as well as other conventionally available equipment forms, to achieve effective incineration of various types of waste and emission of incineration tail gas that meets standards.

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