Temperature-control accelerated carbonization system for solid waste with different water contents

Abstract

The different-moisture-content solid waste temperature control accelerated carbonization system comprises a boiler, a flue gas supply pipeline, a uniform physical property material drying carbonization device, a complex physical property material carbonization device, a crushing device and a gas-solid separation device, and a solid waste combustor is arranged on the boiler; an inlet of the flue gas supply pipeline is connected with a flue gas connector on the flue, and an outlet of the flue gas supply pipeline is connected with a flue gas inlet of the uniform physical material drying and carbonizing device and a flue gas inlet of the complex physical material carbonizing device; an inlet of the gas-solid separation device is connected with an outlet of the crushing device, and at least one of a gas outlet of the gas-solid separation device and a gas outlet of a carbonization cavity of the uniform physical material drying and carbonization device is connected with a carbonization cavity of the complex physical material carbonization device. Therefore, the temperature-control accelerated carbonization system for the solid wastes with different water contents has the advantages that various solid wastes are subjected to classified carbonization, so that the carbonization capacity is improved, and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid waste disposal, in particular to a heterogeneous moisture content solid waste temperature control and carbonization acceleration system. BACKGROUND

[0002] Different types of solid waste have complex physical and chemical properties and different forms, and different types of solid waste cannot adapt to the suspended combustion of coal powder boilers, which has become a problem for large coal-fired power plants to resource and harmlessly dispose of solid waste. In the related art, coal-fired power plants can only burn a small amount of solid waste with uniform physical properties, such as municipal sludge and single biomass, but the blending ratio is also relatively low. SUMMARY

[0003] The present application aims to at least partially solve one of the technical problems in the related art. To this end, an embodiment of the present application proposes a heterogeneous moisture content solid waste temperature control and carbonization acceleration system.

[0004] The heterogeneous moisture content solid waste temperature control and carbonization acceleration system of the present application comprises:

[0005] A boiler is provided with a solid waste burner, the furnace outlet of the boiler is connected to the inlet of a flue, and a flue gas interface is provided on the flue;

[0006] A uniform physical property material drying and carbonization device is provided, and the carbonization cavity of the uniform physical property material drying and carbonization device is used for carbonizing uniform physical property material, and the moisture content of the uniform physical property material is greater than or equal to a first preset value;

[0007] A complex physical property material carbonization device is provided, and the carbonization cavity of the complex physical property material carbonization device is used for carbonizing complex physical property material, and the moisture content of the complex physical property material is less than the first preset value;

[0008] A flue gas supply pipeline is provided, the inlet of the flue gas supply pipeline is connected to the flue gas interface on the flue, and the outlet of the flue gas supply pipeline is connected to the flue gas inlets of the uniform physical property material drying and carbonization device and the complex physical property material carbonization device;

[0009] A crushing device is provided, and the inlet of the crushing device is connected to the carbonization outlet of each of the uniform physical property material drying and carbonization device and the complex physical property material carbonization device;

[0010] A gas-solid separation device is provided, the inlet of the gas-solid separation device is connected to the outlet of the crushing device, the solid outlet of the gas-solid separation device is connected to the inlet of the solid waste burner, the gas outlet of the gas-solid separation device is in communication with the inlet of the solid waste burner, and at least one of the gas outlet of the gas-solid separation device and the carbonization cavity of the uniform physical property material drying and carbonization device is connected to the carbonization cavity of the complex physical property material carbonization device.

[0011] Therefore, the heterogeneous water content solid waste temperature control accelerated carbonization system according to the embodiment of the application classifies and carbonizes various solid wastes, so as to improve the carbonization capacity and reduce the energy consumption.

[0012] In some embodiments, a plurality of the flue gas interfaces are arranged on the flue, and the plurality of the flue gas interfaces are arranged at intervals in the extension direction of the flue.

[0013] The inlet of the flue gas supply pipeline is in one-to-one correspondence with the plurality of the flue gas interfaces through a plurality of flue gas sub-pipelines, and each of the flue gas sub-pipelines is provided with an adjusting valve group for adjusting the flow.

[0014] In some embodiments, the plurality of the flue gas interfaces include a first flue gas interface and a second flue gas interface, and the second flue gas interface is located between the first flue gas interface and the outlet of the flue in the extension direction of the flue.

[0015] The first flue gas interface is in communication with the flue gas supply pipeline through a first flue gas sub-pipeline, and the first flue gas sub-pipeline is provided with a first adjusting valve group and a first on-off valve group.

[0016] The second flue gas interface is in communication with the flue gas supply pipeline through a second flue gas sub-pipeline, and the second flue gas sub-pipeline is provided with a second adjusting valve group and a second on-off valve group.

[0017] The flue gas supply pipeline is in communication with the flue gas inlet of the uniform physical property material drying and carbonization device through a third flue gas sub-pipeline, and the third flue gas sub-pipeline is provided with a third adjusting valve group and a third on-off valve group.

[0018] The flue gas supply pipeline is in communication with the flue gas inlet of the complex physical property material carbonization device through a fourth flue gas sub-pipeline, and the fourth flue gas sub-pipeline is provided with a fourth adjusting valve group and a fourth on-off valve group.

[0019] In some embodiments, the temperature of the flue gas discharged from the first flue gas interface is greater than or equal to 600℃ and less than or equal to 700℃, the temperature of the flue gas discharged from the second flue gas interface is greater than or equal to 300℃ and less than or equal to 400℃, and the temperature of the flue gas in the flue gas supply pipeline is greater than or equal to 550℃ and less than or equal to 600℃.

[0020] In some embodiments, the gas outlet of the gas-solid separation device is connected to the inlet of the solid waste burner through a fifth pipeline, the solid outlet of the gas-solid separation device is connected to the fifth pipeline, the fifth pipeline is in communication with the carbonization cavity of the complex physical property material carbonization device through an under-oxygen low-temperature pipeline, and the under-oxygen low-temperature pipeline is provided with a fifth adjusting valve group and a fifth on-off valve group.

[0021] The heterogeneous moisture content solid waste temperature control accelerated carbonization system further comprises a temperature reducing water device, an outlet of the temperature reducing water device is connected with the atomizing nozzle, the atomizing nozzle is arranged in the carbonization cavity of the complex physical property material carbonization device, and the atomizing nozzle can spray the temperature reducing water into the carbonization cavity.

[0022] The heterogeneous moisture content solid waste temperature control accelerated carbonization system further comprises

[0023] The complex physical property material storage bin, the complex physical property material conveying device and the complex physical property material carbonization device are sequentially connected;

[0024] The uniform physical property material storage bin, the uniform physical property material conveying device and the uniform physical property material drying carbonization device are sequentially connected.

[0025] In some embodiments, the solid waste is divided into complex physical property material and uniform physical property material according to the moisture content and form of the solid waste, and the moisture content of the uniform physical property material is greater than or equal to 60%;

[0026] The uniform physical property material conveying device comprises at least one of a plunger pump, a scraper and a conveying screw.

[0027] In some embodiments, the temperature of the carbonization product discharged by the complex physical property material carbonization device is greater than or equal to 350 DEG C and less than or equal to 450 DEG C;

[0028] The temperature of the carbonization product discharged by the uniform physical property material drying carbonization device is greater than or equal to 130 DEG C and less than or equal to 230 DEG C;

[0029] The inlet of the crushing device has a mixing pipeline in communication with the outlet of the complex physical property material carbonization device and the outlet of the uniform physical property material drying carbonization device, and the temperature of the gas discharged by the mixing pipeline is less than or equal to 300 DEG C;

[0030] The temperature of the gas discharged by the outlet of the crushing device is greater than or equal to 150 DEG C and less than or equal to 250 DEG C.

[0031] In some embodiments, the temperature of the carbonization product discharged by the complex physical property material carbonization device is 400 DEG C;

[0032] The temperature of the carbonization product discharged by the uniform physical property material drying carbonization device is 180 DEG C;

[0033] The temperature in the carbonization cavity of the complex physical property material carbonization device is less than or equal to 600 DEG C;

[0034] The oxygen content in the carbonization cavity of the complex physical property material carbonization device is less than or equal to 10%. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a temperature-controlled accelerated carbonization system for solid waste with varying moisture content according to an embodiment of the present invention.

[0036] Reference numerals in the attached drawings: 1. Complex material storage silo; 2. Complex material conveying device; 3. Complex material carbonization device; 4. Uniform material storage silo; 5. Uniform material conveying device; 6. Uniform material drying and carbonization device; 7. Crushing device; 8. Gas-solid separation device; 9. Booster fan; 10. Solid waste burner; 11. Boiler; 12. First flue gas inlet; 13. First on / off valve group; 14. First regulating valve group; 15. Second flue gas inlet; 16. Second on / off valve group; 17. Second regulating valve group; 18. Fourth regulating valve group; 19. Fourth on / off valve group; 20. Third regulating valve group; 21. Third on / off valve group; 22. Fifth regulating valve group; 23. Fifth on / off valve group; 24. Desuperheating water device; 25. Atomizing nozzle; 26. Fifth pipeline; 27. Low-oxygen low-temperature pipeline; 28. Flue gas supply pipeline. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The following description, with reference to the accompanying drawings, describes an embodiment of the temperature-controlled accelerated carbonization system for solid waste with varying moisture content according to the present invention. For example... Figure 1 As shown, the temperature-controlled accelerated carbonization system for solid waste with varying moisture content according to an embodiment of the present invention includes a boiler 11, a uniform material drying and carbonization device 6, a complex material carbonization device 3, a flue gas supply pipeline 28, a pulverizing device 7, and a gas-solid separation device 8.

[0039] Boiler 11 is equipped with a solid waste burner 10. The furnace outlet of boiler 11 is connected to the flue inlet, and the flue is equipped with a flue gas inlet. Specifically, boiler 11 is a coal-fired boiler that can burn pulverized coal. Boiler 11 can use coal as fuel, and it is equipped with a solid waste burner 10 that can burn solid waste fuel. The solid waste burner 10 and boiler 11 can achieve fuel mixing through coupled combustion, forming a pulverized coal and solid waste fuel co-combustion system. Replacing part of the pulverized coal with solid waste fuel can save production costs and reduce pollution.

[0040] The carbonization cavity of the uniform-property-material drying and carbonization device 6 is used for carbonization (pyrolysis) of the uniform-property-material, and the moisture content of the uniform-property-material is greater than or equal to a first preset value. The carbonization cavity of the complex-property-material carbonization device 3 is used for carbonization (pyrolysis) of the complex-property-material, and the moisture content of the complex-property-material is less than the first preset value. Specifically, the solid waste is divided into the complex-property-material and the uniform-property-material according to the moisture content and the form of the solid waste, and the moisture content of the uniform-property-material is greater than or equal to 60%.

[0041] The inlet of the flue gas supply pipeline 28 is connected with the flue gas interface on the flue, and the outlet of the flue gas supply pipeline 28 is connected with the flue gas inlets of the uniform-property-material drying and carbonization device 6 and the complex-property-material carbonization device 3. In this way, the flue gas in the flue can be introduced into the carbonization cavities of the uniform-property-material drying and carbonization device 6 and the complex-property-material carbonization device 3 through the flue gas supply pipeline 28, so that the carbonization cavity of the uniform-property-material drying and carbonization device 6 carbonizes the uniform-property-material, and the carbonization cavity of the complex-property-material carbonization device 3 carbonizes the complex-property-material.

[0042] The inlet of the crushing device 7 is connected with the carbonization outlet of each of the uniform-property-material drying and carbonization device 6 and the complex-property-material carbonization device 3. In this way, the pyrolysis solid product and the pyrolysis gaseous product generated by the uniform-property-material drying and carbonization device 6 and the complex-property-material carbonization device 3 can be introduced into the crushing device 7, so that the crushing device 7 crushes the pyrolysis solid product after carbonization. For example, a multi-stage crushing device 7 can be provided to meet the requirement of the combustion mode of the pulverized coal boiler 11 for the prepared powder.

[0043] The inlet of the gas-solid separation device 8 is connected with the outlet of the crushing device 7, the solid outlet of the gas-solid separation device 8 is connected with the inlet of the solid waste burner 10, and the gas outlet of the gas-solid separation device 8 is connected with the inlet of the solid waste burner 10. Specifically, the pyrolysis solid product and the pyrolysis gaseous product discharged by the crushing device 7 can be introduced into the gas-solid separation device 8 for gas-solid separation, and the separated pyrolysis solid product is introduced into the solid waste burner 10 for combustion.

[0044] At least one of the gas outlet of the gas-solid separation device 8 and the gas outlet of the carbonization cavity of the uniform-property-material drying and carbonization device 6 is connected with the carbonization cavity of the complex-property-material carbonization device 3. That is, the flue gas discharged by at least one of the gas-solid separation device 8 and the uniform-property-material drying and carbonization device 6 can be introduced into the carbonization cavity of the complex-property-material carbonization device 3. For example, part of the pyrolysis gaseous product separated by the gas-solid separation device 8 can be introduced into the solid waste burner 10 for combustion, and the other part can be introduced into the carbonization cavity of the complex-property-material carbonization device 3 again.

[0045] The heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application sets the uniform physical property material drying and carbonization device 6 and the complex physical property material carbonization device 3, first divides the multi-source solid waste into complex physical property materials (such as biomass, waste derived fuel, etc.) and uniform physical property materials (such as municipal sludge, coal slime, etc.), the uniform physical property material with high moisture content enters the uniform physical property material drying and carbonization device 6 for carbonization, and the flue gas temperature discharged by the uniform physical property material drying and carbonization device 6 is low. The complex physical property material with low moisture content enters the complex physical property material carbonization device 3 for controlled sub-oxygen combustion, shortens the carbonization time of the complex physical property material, and improves the disposal capacity of the system.

[0046] The flue gas discharged by the uniform physical property material drying and carbonization device 6, and / or part of the flue gas mixed after the complex physical property material carbonization device 3 and the uniform physical property material drying and carbonization device 6 can be introduced into the carbonization cavity of the complex physical property material carbonization device 3 again, so as to control the temperature and oxygen content in the complex physical property material carbonization device 3, thereby facilitating the control of the sub-oxygen combustion of the complex physical property material carbonization device 3, so as to improve the carbonization capacity of the heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application. The pyrolysis products of the heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application can enter the solid waste burner 10 for combustion, thereby reducing the energy consumption of the boiler 11.

[0047] Therefore, the heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application classifies and carbonizes various solid wastes, so as to improve the carbonization capacity and reduce the energy consumption.

[0048] In some embodiments, a plurality of flue gas interfaces are arranged on the flue, and the plurality of flue gas interfaces are arranged at intervals in the extension direction of the flue. In this way, the plurality of flue gas interfaces can discharge flue gas at different temperatures, and the flue gas discharged by the flue gas interface adjacent to the outlet of the flue has a lower temperature than the flue gas discharged by the flue gas interface away from the outlet of the flue.

[0049] The inlet of the flue gas supply pipeline 28 is in communication with the plurality of flue gas interfaces through a plurality of flue gas sub-pipelines, and each flue gas sub-pipeline is provided with an adjusting valve group for adjusting the flow thereof. In this way, the flow of the flue gas discharged by the flue gas sub-pipeline can be adjusted by adjusting the adjusting valve group on the flue gas sub-pipeline, so as to control the temperature of the flue gas introduced into the flue gas supply pipeline 28.

[0050] As shown in FIG. 1, the heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application comprises a flue 1, a solid waste carbonization device 2, a solid waste burner 10, a boiler 11, a flue gas supply pipeline 28, and a flue gas treatment device 29. Figure 1As shown, in some embodiments, the plurality of flue gas interfaces include a first flue gas interface 12 and a second flue gas interface 15, wherein the second flue gas interface 15 is located between the first flue gas interface 12 and the outlet of the flue gas duct in the extension direction of the flue. That is, the flue gas temperature discharged from the first flue gas interface 12 is greater than the flue gas temperature discharged from the second flue gas interface 15. Specifically, the flue gas temperature discharged from the first flue gas interface 12 is greater than or equal to 600°C and less than or equal to 700°C, and the flue gas temperature discharged from the second flue gas interface 15 is greater than or equal to 300°C and less than or equal to 400°C.

[0051] The first flue gas inlet 12 is connected to the flue gas supply pipeline 28 via a first flue gas sub-pipeline. The first flue gas sub-pipeline is equipped with a first regulating valve group 14 and a first on / off valve group 13. The second flue gas inlet 15 is connected to the flue gas supply pipeline 28 via a second flue gas sub-pipeline. The second flue gas sub-pipeline is equipped with a second regulating valve group 17 and a second on / off valve group 16. Specifically, after the first on / off valve group 13 and the second on / off valve group 16 are opened, the first regulating valve group 14 regulates the flow rate of the flue gas discharged from the first flue gas inlet 12, and the second regulating valve group 17 regulates the flow rate of the flue gas discharged from the second flue gas inlet 15, thereby controlling the temperature of the flue gas entering the flue gas supply pipeline 28. Specifically, the flue gas temperature in the flue gas supply pipeline 28 is greater than or equal to 550℃ and less than or equal to 600℃, so that the flue gas temperature entering the uniform material drying and carbonization device 6 and the complex material carbonization device 3 is greater than or equal to 550℃ and less than or equal to 600℃.

[0052] The flue gas supply pipeline 28 is connected to the flue gas inlet of the uniform material drying and carbonization device 6 via a third flue gas sub-pipeline. The third flue gas sub-pipeline is equipped with a third regulating valve group 20 and a third on / off valve group 21. Thus, after the third on / off valve group 21 is opened, the flow rate of flue gas entering the uniform material drying and carbonization device 6 can be controlled by adjusting the third regulating valve group 20.

[0053] The flue gas supply pipeline 28 is connected to the flue gas inlet of the complex material carbonization device 3 via a fourth flue gas sub-pipeline. The fourth flue gas sub-pipeline is equipped with a fourth regulating valve group 18 and a fourth on / off valve group 19. Thus, when the fourth on / off valve group 19 is opened, the flow rate of the flue gas entering the complex material carbonization device 3 is controlled through the fourth regulating valve group 18.

[0054] like Figure 1 As shown, in some embodiments, the gas outlet of the gas-solid separation device 8 is connected to the inlet of the solid waste burner 10 via a fifth pipe 26, and the solid outlet of the gas-solid separation device 8 is connected to the fifth pipe 26. This allows the flue gas discharged from the gas outlet and the solid material discharged from the solid outlet of the gas-solid separation device 8 to be fed into the solid waste burner 10 for combustion.

[0055] The fifth pipeline 26 is communicated with the carbonization cavity of the complex material carbonization device 3 through the oxygen-deficient low-temperature pipeline 27, and the fifth regulating valve group 22 and the fifth on-off valve group 23 are arranged on the oxygen-deficient low-temperature pipeline 27. Specifically, the inlet of the oxygen-deficient low-temperature pipeline 27 is located between the inlet of the fifth pipeline 26 and the solid outlet of the gas-solid separation device 8 in the extension direction of the fifth pipeline 26, so that the flue gas of the fifth pipeline 26 can enter the oxygen-deficient low-temperature pipeline 27. The fifth regulating valve group 22 can adjust the flow of the low-temperature gas in the oxygen-deficient low-temperature pipeline 27. For example, the booster fan 9 is arranged on the fifth pipeline 26, and the booster fan 9 is located between the inlet of the fifth pipeline 26 and the inlet of the oxygen-deficient low-temperature pipeline 27 in the extension direction of the fifth pipeline 26.

[0056] Therefore, after the fifth on-off valve group 23 is opened, the low-temperature gas discharged from the gas outlet of the gas-solid separation device 8 can enter the carbonization cavity of the complex material carbonization device 3 through the fifth pipeline 26 and the oxygen-deficient low-temperature pipeline 27 in sequence, so as to reduce the temperature in the carbonization cavity of the complex material carbonization device 3.

[0057] In some embodiments, the heterogeneous moisture content solid waste temperature control and accelerated carbonization system further comprises a temperature-reducing water device 24, and the outlet of the temperature-reducing water device 24 is connected with the atomizing nozzle 25 arranged in the carbonization cavity of the complex material carbonization device 3, and the atomizing nozzle 25 can spray the temperature-reducing water into the carbonization cavity. Therefore, the temperature in the carbonization cavity of the complex material carbonization device 3 can be controlled by spraying the temperature-reducing water into the carbonization cavity of the complex material carbonization device 3.

[0058] For example, when the temperature in the complex material carbonization device 3 rises sharply and the fifth regulating valve group 22 cannot immediately reduce the temperature even if it is fully opened, the temperature-reducing water device 24 is opened, and the temperature in the complex material carbonization device 3 is quickly controlled within a safe range by the temperature-reducing water through the atomizing nozzle 25. The atomizing nozzle 25 avoids the direct contact between a large amount of temperature-reducing water and high-temperature metal, which reduces the metal ability.

[0059] In some embodiments, the temperature in the carbonization cavity of the complex material carbonization device 3 is less than or equal to 600 DEG C. The oxygen content in the carbonization cavity of the complex material carbonization device 3 is less than or equal to 10%.

[0060] In some embodiments, the temperature of the carbonization product discharged from the complex material carbonization device 3 is greater than or equal to 350 DEG C and less than or equal to 450 DEG C. For example, the temperature of the carbonization product discharged from the complex material carbonization device 3 is 400 DEG C. Since the material properties of the complex material carbonization device 3 are complex, sufficient residence time is required to achieve a certain degree of carbonization. According to the different moisture contents of the materials, the outlet temperature of the dehydration carbonization device (3) is controlled at about 400 DEG C by controlling the feed amount.

[0061] In some embodiments, the temperature of the carbonized product discharged from the uniform-property material drying and carbonizing device 6 is greater than or equal to 130°C and less than or equal to 230°C. For example, the temperature of the carbonized product discharged from the uniform-property material drying and carbonizing device 6 is 180°C.

[0062] The temperature of the flue gas discharged from the uniform-property material drying and carbonizing device 6 is lower than the temperature of the flue gas discharged from the complex-property material carbonizing device 3, so that the temperature of the flue gas mixed from the uniform-property material drying and carbonizing device 6 and the complex-property material carbonizing device 3 is lower than the temperature of the flue gas discharged from the complex-property material carbonizing device 3, so that the flue gas mixed from the uniform-property material drying and carbonizing device 6 and the complex-property material carbonizing device 3 can be introduced into the carbonizing cavity of the complex-property material carbonizing device 3 through the oxygen-deficient low-temperature pipeline 27, so as to reduce the temperature in the carbonizing cavity of the complex-property material carbonizing device 3.

[0063] The inlet of the crushing device 7 has a mixing pipeline in communication with the outlet of the complex-property material carbonizing device 3 and the outlet of the uniform-property material drying and carbonizing device 6, and the temperature of the gas discharged from the mixing pipeline is less than or equal to 300°C. The temperature of the gas discharged from the outlet of the crushing device 7 is greater than or equal to 150°C and less than or equal to 250°C. For example, the material properties in the uniform-property material drying and carbonizing device 6 are uniform, and the carbonization time is stable, so that the flow rate of the flue gas in the device can be controlled by designing a fixed flow area control device, and the outlet temperature of the uniform-property material drying and carbonizing device 6 under the condition of stable continuous feeding is about 180°C. The temperature of the mixed gas from the outlet of the complex-property material carbonizing device 3 and the outlet of the uniform-property material drying and carbonizing device 6 before entering the crushing device 7 does not exceed 300°C.

[0064] Specifically, in order to accelerate the carbonization speed of the complex-property material and increase the system disposal capacity, the complex-property material carbonizing device 3 can be allowed to have smoldering or slight combustion. In this case, not only the carbonization time can be shortened, but also the flue gas extraction amount can be reduced due to the self-heating, and the higher temperature level can also reduce the generation of tar. However, in order to make the smoldering or slight combustion controllable and avoid excessive combustion leading to high temperature in the device and even explosion and other dangerous working conditions, the fifth on-off valve group can be opened, and the opening degree of the fifth regulating valve group is adjusted to control the temperature in the complex-property material carbonizing device 3 to be less than or equal to 600°C and the oxygen content to be less than or equal to 10%.

[0065] In some embodiments, the temperature-controlled accelerated carbonization system for heterogeneous moisture-containing waste further comprises a complex-property material storage bin 1 and a complex-property material conveying device 2, and the complex-property material storage bin 1, the complex-property material conveying device 2 and the complex-property material carbonizing device 3 are connected in sequence.

[0066] The heterogeneous moisture content solid waste temperature control accelerated carbonization system further comprises a uniform physical property material storage bin 4 and a uniform physical property material conveying device 5, and the uniform physical property material storage bin 4, the uniform physical property material conveying device 5 and the uniform physical property material drying and carbonization device 6 are sequentially connected. The uniform physical property material conveying device 5 comprises at least one of a plunger pump, a scraper and a conveying screw.

[0067] Specifically, the multi-source solid waste is divided into complex physical property materials (such as biomass, waste-derived fuel, etc.) and uniform physical property materials (such as municipal sludge, coal slime, etc.) in advance, and is respectively stored in the complex physical property material storage bin 1 and the uniform physical property material storage bin 4.

[0068] For the municipal sludge and coal slime uniform physical property materials, a sludge bin, a plunger pump, a scraper and a conveying screw can be used. The complex physical property materials can be added with a belt, a shredder and a material plug to ensure the reliability of material conveying.

[0069] The heterogeneous moisture content solid waste temperature control accelerated carbonization system according to the embodiment of the present application adopts different feeding devices and carbonization devices for solid wastes with different physical properties, has strong adaptability, can simultaneously dispose solid wastes with multiple physical properties, and provides a new method for coupling multi-source solid waste power generation in coal-fired power plants. Moreover, the controllable under-oxygen combustion mode shortens the carbonization time of the complex physical property materials, and improves the disposal capacity of the system.

[0070] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0072] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected", "connection", "fixedly connected", "connected", "fixed", and the like should be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0074] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0075] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A temperature-controlled accelerated carbonization system for heterogeneous water content solid waste, characterized by, The system comprises: a boiler provided with a solid waste burner, a furnace outlet of the boiler being connected with an inlet of a flue, and a flue gas interface being provided on the flue; a uniform physical property material drying and carbonization device, a carbonization cavity of the device being used for carbonization of uniform physical property material, and a water content of the uniform physical property material being greater than or equal to a first preset value; a complex physical property material carbonization device, a carbonization cavity of the device being used for carbonization of complex physical property material, and a water content of the complex physical property material being less than the first preset value; a flue gas supply pipeline, an inlet of the pipeline being connected with the flue gas interface on the flue, and outlets of the pipeline being connected with flue gas inlets of the uniform physical property material drying and carbonization device and the complex physical property material carbonization device; a crushing device, an inlet of the device being connected with a carbonization outlet of each of the uniform physical property material drying and carbonization device and the complex physical property material carbonization device; a gas-solid separation device, an inlet of the device being connected with an outlet of the crushing device, a solid outlet of the device being connected with an inlet of the solid waste burner, a gas outlet of the device being in communication with the inlet of the solid waste burner, and at least one of the gas outlet of the device and a gas outlet of the carbonization cavity of the uniform physical property material drying and carbonization device being connected with the carbonization cavity of the complex physical property material carbonization device.

2. The system according to claim 1, wherein: a plurality of flue gas interfaces are provided on the flue, and the plurality of flue gas interfaces are arranged at intervals in an extension direction of the flue; the inlet of the flue gas supply pipeline is in communication with the plurality of flue gas interfaces through a plurality of flue gas sub-pipelines, and each of the flue gas sub-pipelines is provided with an adjusting valve group for adjusting a flow rate thereof.

3. The system according to claim 2, wherein: the plurality of flue gas interfaces comprise a first flue gas interface and a second flue gas interface, and the second flue gas interface is located between the first flue gas interface and an outlet of the flue in the extension direction of the flue; the first flue gas interface is in communication with the flue gas supply pipeline through a first flue gas sub-pipeline, and the first flue gas sub-pipeline is provided with a first adjusting valve group and a first on-off valve group; the second flue gas interface is in communication with the flue gas supply pipeline through a second flue gas sub-pipeline, and the second flue gas sub-pipeline is provided with a second adjusting valve group and a second on-off valve group; the flue gas supply pipeline is in communication with the flue gas inlet of the uniform physical property material drying and carbonization device through a third flue gas sub-pipeline, and the third flue gas sub-pipeline is provided with a third adjusting valve group and a third on-off valve group; the flue gas supply pipeline is in communication with the flue gas inlet of the complex physical property material carbonization device through a fourth flue gas sub-pipeline, and the fourth flue gas sub-pipeline is provided with a fourth adjusting valve group and a fourth on-off valve group.

4. The non-uniform moisture content temperature-controlled accelerated carbonization system of claim 3, wherein, The flue gas temperature discharged from the first flue gas interface is greater than or equal to 600 DEG C and less than or equal to 700 DEG C, the flue gas temperature discharged from the second flue gas interface is greater than or equal to 300 DEG C and less than or equal to 400 DEG C, and the flue gas temperature in the flue gas supply pipeline is greater than or equal to 550 DEG C and less than or equal to 600 DEG C.

5. The non-uniform moisture content temperature-controlled accelerated carbonization system of claim 1, wherein, The gas outlet of the gas-solid separation device is connected with the inlet of the solid waste burner through a fifth pipeline, the solid outlet of the gas-solid separation device is connected with the fifth pipeline, the fifth pipeline is communicated with the carbonization cavity of the complex material carbonization device through an under-oxygen low-temperature pipeline, and the under-oxygen low-temperature pipeline is provided with a fifth adjusting valve group and a fifth on-off valve group.

6. The heterogeneous-moisture-content temperature-controlled accelerated carbonization system of claim 1, wherein, Further comprising a desuperheating water device, the outlet of the desuperheating water device is connected with the atomizing nozzle, the atomizing nozzle is arranged in the carbonization cavity of the complex material carbonization device, and the atomizing nozzle can spray desuperheating water into the carbonization cavity.

7. The heterogeneous-moisture-content temperature-controlled accelerated carbonization system of claim 1, wherein, Further comprising a complex material storage bin and a complex material conveying device, the complex material storage bin, the complex material conveying device and the complex material carbonization device are sequentially connected; a uniform material storage bin and a uniform material conveying device, the uniform material storage bin, the uniform material conveying device and the uniform material drying carbonization device are sequentially connected.

8. The heterogeneous moisture content solid waste temperature control accelerated carbonization system according to claim 7, wherein the solid waste is divided into complex material and uniform material according to the moisture content and form of the solid waste, and the moisture content of the uniform material is greater than or equal to 60%; the uniform material conveying device comprises at least one of a plunger pump, a scraper and a conveying screw.

9. The heterogeneous moisture content solid waste temperature control accelerated carbonization system according to claim 1, wherein the temperature of the carbonization product discharged from the complex material carbonization device is greater than or equal to 350 DEG C and less than or equal to 450 DEG C; the temperature of the carbonization product discharged from the uniform material drying carbonization device is greater than or equal to 130 DEG C and less than or equal to 230 DEG C; the inlet of the crushing device is provided with a mixing pipeline communicated with the outlet of the complex material carbonization device and the outlet of the uniform material drying carbonization device, and the temperature of the gas discharged from the mixing pipeline is less than or equal to 300 DEG C; the temperature of the gas discharged from the outlet of the crushing device is greater than or equal to 150 DEG C and less than or equal to 250 DEG C.

10. The heterogeneous moisture content solid waste temperature control accelerated carbonization system according to claim 9, wherein the temperature of the carbonization product discharged from the complex material carbonization device is 400 DEG C; the temperature of the carbonization product discharged from the uniform material drying carbonization device is 180 DEG C; the temperature in the carbonization cavity of the complex material carbonization device is less than or equal to 600 DEG C; the oxygen content in the carbonization cavity of the complex material carbonization device is less than or equal to 10%.

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