Gasification melting system

Abstract

The utility model relates to the technical field of solid waste treatment, and particularly discloses a gasification melting system which comprises a melting furnace, a gasification furnace and a tail gas treatment mechanism. The melting furnace is communicated with the bottom of the gasification furnace through a first air pipe; the top of the gasification furnace is communicated with the melting furnace through a second air pipe; the melting furnace is communicated with the tail gas treatment mechanism through a third air pipe; and a pressure regulating air valve is arranged on the third air pipe. According to the scheme, gas generated after solid-liquid waste is combusted in the melting furnace can be exhausted into the gasification furnace to be combusted again; hot air flow generated by combustion in the gasification furnace can return to the melting furnace, so that the heat of the hot air flow is recycled, the energy utilization rate is increased, the resource utilization cost is reduced, and combustion tail gas is discharged through the tail gas treatment mechanism after sufficient combustion.

Description

Technical Field

[0001] The present application relates to the technical field of solid waste treatment, and in particular to a gasification and melting system. Background Art

[0002] Incineration and gasification and melting technologies are commonly used to treat hazardous waste. Among them, high-temperature gasification and melting harmless treatment technology can decompose and gasify organic matter in hazardous waste, and inorganic gasification and incineration residues melt and quench into harmless glassy water-quenched slag during the combustion process. The glassy water-quenched slag can be reused as building materials, thereby achieving harmless treatment and resource utilization of hazardous waste.

[0003] In order to reduce the impact on the environment, in the existing system, the gas produced by the gasification and melting furnace is secondary burned before being discharged, which further increases the energy consumption of the system and increases the cost of resource utilization. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a gasification melting system for reducing the energy consumption of the system to reduce the cost of resource utilization.

[0005] In order to achieve the above technical objectives, the present application provides a gasification melting system, including: a melting furnace, a gasification furnace and an exhaust gas treatment mechanism;

[0006] The melting furnace is connected to the bottom of the gasification furnace through a first air duct;

[0007] The top of the gasification furnace is connected to the melting furnace through a second air duct;

[0008] The melting furnace is connected to the tail gas treatment mechanism through a third air duct;

[0009] The third air duct is provided with a pressure regulating air valve.

[0010] Further, it also includes: a waste heat recovery component;

[0011] The melting furnace is connected to the waste heat recovery component through a third air duct;

[0012] The waste heat recovery component is connected to the tail gas treatment mechanism.

[0013] Furthermore, the waste heat recovery component includes: a waste heat recovery boiler, a thermal generator and a battery;

[0014] The melting furnace is connected to the waste heat recovery boiler through a third air duct;

[0015] The waste heat recovery boiler is connected to the tail gas treatment mechanism;

[0016] The thermal energy generator is connected to the waste heat recovery boiler;

[0017] The storage battery is connected to the thermal energy generator.

[0018] Furthermore, the waste heat recovery assembly further comprises: a steam storage tank and a hot water storage tank;

[0019] The steam storage tank is connected to the waste heat recovery boiler and is used to receive the steam generated by the waste heat recovery boiler;

[0020] The hot water storage tank is communicated with the bottom of the steam storage tank.

[0021] Further, the waste heat recovery component also includes: a water removal filter;

[0022] The waste heat recovery boiler is connected to the tail gas treatment mechanism through the water removal filter.

[0023] Further, it also includes: a first storage bucket and a conveyor;

[0024] The first material storage barrel is connected to the melting furnace via the conveyor;

[0025] The first storage barrel is used for storing solid and liquid waste.

[0026] Further, it also includes: a temporary storage bucket and a first screw conveyor;

[0027] One end of the conveyor is connected to the first storage barrel, and the other end is connected to the temporary storage barrel;

[0028] The conveyor is used to transport solid and liquid waste to the temporary storage barrel;

[0029] One end of the first screw conveyor is connected to the temporary storage barrel, and the other end is connected to the melting furnace.

[0030] Furthermore, it also includes a second storage bucket and a second screw conveyor;

[0031] The second material storage barrel is connected to the gasifier via the second screw conveyor;

[0032] The second storage barrel is used for storing waste.

[0033] Furthermore, a plasma component is provided in the melting furnace.

[0034] Further, it also includes: a vehicle body;

[0035] The melting furnace, gasification furnace and tail gas treatment mechanism are all arranged on the vehicle body;

[0036] A steering wheel and / or wheels are arranged at the bottom of the vehicle body.

[0037] It can be seen from the above technical scheme that the present application provides a gasification and melting system, including: a melting furnace, a gasification furnace and an exhaust gas treatment mechanism; the melting furnace is connected to the bottom of the gasification furnace through a first air duct; the top of the gasification furnace is connected to the melting furnace through a second air duct; the melting furnace is connected to the exhaust gas treatment mechanism through a third air duct; a pressure regulating air valve is provided on the third air duct.

[0038] In this scheme, the gas generated after the solid and liquid wastes are burned in the melting furnace will be discharged into the gasification furnace for further combustion; the hot air flow generated by the combustion in the gasification furnace will return to the melting furnace, realizing the reuse of the heat of the hot air flow to improve energy utilization and reduce resource utilization costs, and after sufficient combustion, the combustion exhaust gas will be discharged through the exhaust gas treatment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A wireframe structure diagram of a gasification and melting system provided in an embodiment of the present application;

[0041] In the figure: 1. first storage barrel; 2. second storage barrel; 3. second screw conveyor; 4. gasification furnace; 5. high-temperature positive pressure fan; 6. conveyor; 7. temporary storage barrel; 8. first screw conveyor; 9. melting furnace; 10. pressure regulating air valve; 11. battery; 12. generator; 13. waste heat recovery boiler; 14. water removal filter; 15. exhaust gas treatment mechanism; 16. vehicle body; 17. steering wheel; 18. wheel; 19. plasma component; 20. first air duct; 21. water quenching and collecting device; 22. oxygen enrichment generator; 23. steam storage tank; 24. hot water storage tank; 25. second air duct; 26. third air duct. DETAILED DESCRIPTION

[0042] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0043] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0045] See also Figure 1 A gasification and melting system provided in an embodiment of the present application includes: a melting furnace 9, a gasification furnace 4 and an exhaust gas treatment mechanism 15. A plasma generator may be provided inside the melting furnace 9. A plasma component 19 may be provided next to the melting furnace 9; the plasma component 19 and the plasma generator form a system, so that the plasma generator generates a high-temperature plasma flame flow, and the temperature of the high-temperature plasma flame flow can reach 5000°C, which can incinerate and melt the hazardous solid waste inside the melting furnace 9.

[0046] The melting furnace 9 is connected to the bottom of the gasification furnace 4 through the first air duct 20, so that the high-temperature flue gas generated by the melting furnace 9 enters the gasification furnace 4 through the first air duct 20. The internal temperature of the gasification furnace 4 gradually increases, and the waste inside it is burned. During the combustion process, the heat of the hot air flow generated by the melting furnace 9 is effectively utilized to achieve effective utilization of heat.

[0047] The top of the gasifier 4 is connected to the melting furnace 9 through the second air duct 25, so that the hot air flow generated by the combustion of the gasifier 4 flows back to the melting furnace 9 through the second air duct 25, realizing the reuse of the heat of the hot air flow. Among them, a high-temperature positive pressure fan 5 with an air outlet facing the melting furnace 9 can be provided on the second air duct 25.

[0048] In application, the gasifier 4 may be connected to an oxygen-enriched generator 22; oxygen is delivered to the gasifier 4 by the oxygen-enriched generator 22, so that the oxygen inside the gasifier 4 can rise to a certain proportion, so that the combustion products in the gasifier 4 can maintain an incomplete combustion state under the oxygen-enriched state to continuously gasify the organic matter in the waste to form a large amount of combustible flue gas. In this process, the inorganic matter in the waste forms fly ash and flows with the airflow.

[0049] The melting furnace 9 is connected to the tail gas treatment mechanism 15 through the third air duct 26 ; the third air duct 26 is provided with a pressure regulating air valve 10 .

[0050] After the solid and liquid wastes are fully burned in the gasification furnace 4 and the melting furnace 9 , the staff can open the pressure regulating air valve 10 to allow the exhaust gas to be processed by the exhaust gas treatment mechanism 15 and then discharged.

[0051] The pressure-regulating air valve 10 can also be adapted to present a structure that automatically opens after reaching a certain pressure; specifically, when an oxygen-enriched generator 22 is provided, as the gas in the gasifier 4 and the melting furnace 9 continues to circulate, the gas pressure in the gasifier 4 and the melting furnace 9 will continue to increase; after the pressure in the gasifier 4 and the melting furnace 9 increases to a preset pressure value, the pressure-regulating air valve 10 opens to release a portion of the airflow in the gasifier 4 and the melting furnace 9 to the exhaust gas treatment mechanism 15 for discharge.

[0052] As an embodiment, a water quenching and collecting device 21 may be provided at the bottom of the melting furnace 9; after the melting furnace 9 melts the solid and liquid waste into a liquid state, the liquid waste is discharged into the water quenching and collecting device 21 for water quenching to form a glass body.

[0053] In one embodiment, it also includes: a waste heat recovery component; the melting furnace 9 is connected to the waste heat recovery component through the third air duct 26; the waste heat recovery component is connected to the exhaust gas treatment mechanism 15.

[0054] Specifically, the gas exhausted from the melting furnace 9 will first pass through the waste heat recovery component and then pass through the tail gas treatment mechanism 15, so that the heat can be utilized through the waste heat recovery component, thereby further improving the energy utilization rate.

[0055] In a more specific embodiment, the waste heat recovery component includes: a waste heat recovery boiler 13, a thermal energy generator 12 and a battery 11; the melting furnace 9 is connected to the waste heat recovery boiler 13 through the third air duct 26; the waste heat recovery boiler 13 is connected to the exhaust gas treatment mechanism 15; the thermal energy generator 12 is connected to the waste heat recovery boiler 13; the battery 11 is connected to the thermal energy generator 12.

[0056] The waste heat recovery boiler 13 can transfer the heat of the exhaust gas to the thermal generator 12, so that the thermal generator 12 generates electricity; wherein the thermal generator 12 is an existing generator that can generate electricity using heat, and will not be described in detail in this embodiment. Afterwards, the electricity generated by the thermal generator 12 is stored in the storage battery 11.

[0057] Optionally, the waste heat recovery component further includes: a steam storage tank 23 and a hot water storage tank 24 ; the steam storage tank 23 is connected to the waste heat recovery boiler 13 for receiving steam generated by the waste heat recovery boiler 13 ; the hot water storage tank 24 is connected to the bottom of the steam storage tank 23 .

[0058] Steam and hot water can be utilized and stored through the steam storage tank 23 and the hot water storage tank 24 .

[0059] Optionally, the waste heat recovery component further includes: a water removal filter 14 ; the waste heat recovery boiler 13 is connected to the tail gas treatment mechanism 15 through the water removal filter 14 .

[0060] The water removal filter 14 can use a semi-wet method to filter out harmful substances such as nitrogen oxides, sulfides, chlorides, etc. in the tail gas, and reduce the water content in the tail gas, thereby precipitating a portion of water vapor.

[0061] The tail gas treatment mechanism 15 may be a bag filter, which filters out dust in the tail gas to meet the emission standards, and finally discharges the dust from the tail gas through the chimney of the tail gas treatment mechanism 15 .

[0062] In another embodiment, it also includes: a first storage barrel 1 and a conveyor 6; the first storage barrel 1 is connected to the melting furnace 9 through the conveyor 6; the first storage barrel 1 is used to store solid and liquid wastes.

[0063] The conveyor 6 may be an embedded scraper conveyor, which can realize material transportation from low to high, so as to transport the solid and liquid waste in the first storage barrel 1 to a position close to the top of the melting furnace 9.

[0064] Furthermore, it also includes: a temporary storage barrel 7 and a first screw conveyor 8; one end of the conveyor 6 is connected to the first storage barrel 1, and the other end is connected to the temporary storage barrel 7; the conveyor 6 is used to transport solid and liquid waste to the temporary storage barrel 7; one end of the first screw conveyor 8 is connected to the temporary storage barrel 7, and the other end is connected to the melting furnace 9.

[0065] The first screw conveyor 8 can be used to quantitatively convey materials to the melting furnace 9 .

[0066] In one embodiment, it further includes a second material storage barrel 2 and a second screw conveyor 3; the second material storage barrel 2 is connected to the gasification furnace 4 via the second screw conveyor 3; the second material storage barrel 2 is used to store waste.

[0067] The second storage barrel 2 can quantitatively convey the waste to the gasifier 4 through the second screw conveyor 3. When the internal temperature of the gasifier 4 gradually rises to a predetermined temperature, the second screw conveyor 3 starts. At this time, waste can be added to the second storage barrel 2, and the waste is crushed by the crusher to form particles of uniform size, which are quantitatively conveyed to the inside of the gasifier 4 by the second screw conveyor 3. The airflow in the gasifier 4 is fully mixed with the solid waste particles, the water therein is evaporated, and the waste is carried to collide with the crushing knife inside the gasifier 4, so that the particle size of the material is smaller, so as to facilitate the combustion of the waste.

[0068] In the gas embodiment, it also includes: a vehicle body 16; the melting furnace 9, the gasification furnace 4 and the exhaust gas treatment mechanism 15 are all arranged on the vehicle body 16; and a steering wheel 17 and / or a wheel 18 are arranged at the bottom of the vehicle body 16.

[0069] By means of the steering wheel 17 and / or the wheels 18 , the vehicle body 16 can adjust its position according to the terrain and space.

[0070] The above are only preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gasification and melting system, characterized in that: include: A melting furnace (9), a gasification furnace (4) and an exhaust gas treatment mechanism (15); The melting furnace (9) is connected to the bottom of the gasification furnace (4) via a first air duct (20); The top of the gasification furnace (4) is connected to the melting furnace (9) via a second air duct (25); The melting furnace (9) is connected to the tail gas treatment mechanism (15) via a third air duct (26); The third air duct (26) is provided with a pressure regulating air valve (10).

2. The gasification and melting system according to claim 1, characterized in that: Also includes: Waste heat recovery components; The melting furnace (9) is connected to the waste heat recovery component via a third air duct (26); The waste heat recovery component is connected to the tail gas treatment mechanism (15).

3. The gasification and melting system according to claim 2, characterized in that: The waste heat recovery component comprises: a waste heat recovery boiler (13), a thermal energy generator (12) and a storage battery (11); The melting furnace (9) is connected to the waste heat recovery boiler (13) via a third air duct (26); The waste heat recovery boiler (13) is connected to the tail gas treatment mechanism (15); The thermal energy generator (12) is connected to the waste heat recovery boiler (13); The storage battery (11) is connected to the thermal energy generator (12).

4. The gasification and melting system according to claim 3, characterized in that: The waste heat recovery component further comprises: a steam storage tank (23) and a hot water storage tank (24); The steam storage tank (23) is connected to the waste heat recovery boiler (13) and is used to receive steam generated by the waste heat recovery boiler (13); The hot water storage tank (24) is connected to the bottom of the steam storage tank (23).

5. The gasification and melting system according to claim 3, characterized in that: The waste heat recovery component further comprises: a water removal filter (14); The waste heat recovery boiler (13) is connected to the tail gas treatment mechanism (15) via the water removal filter (14).

6. The gasification and melting system according to claim 1, characterized in that: Also includes: A first material storage barrel (1) and a conveyor (6); The first material storage barrel (1) is connected to the melting furnace (9) via the conveyor (6); The first storage barrel (1) is used to store solid and liquid waste.

7. The gasification and melting system according to claim 6, characterized in that: Also includes: A temporary storage barrel (7) and a first screw conveyor (8); One end of the conveyor (6) is connected to the first material storage barrel (1), and the other end is connected to the temporary storage barrel (7); The conveyor (6) is used to transport solid and liquid waste to the temporary storage barrel (7); One end of the first screw conveyor (8) is connected to the temporary storage barrel (7), and the other end is connected to the melting furnace (9).

8. The gasification and melting system according to claim 1, characterized in that: It also includes a second material storage barrel (2) and a second screw conveyor (3); The second material storage barrel (2) is connected to the gasification furnace (4) via the second screw conveyor (3); The second storage barrel (2) is used to store waste.

9. The gasification and melting system according to claim 1, characterized in that: A plasma component (19) is arranged in the melting furnace.

10. The gasification and melting system according to any one of claims 1 to 9, characterized in that: Also includes: Body (16); The melting furnace (9), the gasification furnace (4) and the tail gas treatment mechanism (15) are all arranged on the vehicle body (16); A steering wheel (17) and / or a wheel (18) is provided at the bottom of the vehicle body (16).

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