Gasification melting waste heat recovery device and gasification melting equipment

Abstract

The utility model discloses a gasification melting waste heat recovery device and gasification melting equipment, and relates to the technical field of solid waste treatment, the gasification melting waste heat recovery device comprises a gas chamber, an atomizing machine, a water replenishing machine, a fan and a heat exchange device; a sealed chamber is arranged in the gas chamber and is used for loading a furnace body of the gasification melting device; an air inlet and an air outlet are formed in the air chamber; the air inlet end of the fan is connected with an atomizing outlet of the atomizing machine, the air outlet end of the fan is connected with an air inlet of the air chamber, and the fan is used for conveying water vapor generated by the atomizing machine into the air chamber; a water replenishing outlet of the water replenishing machine is connected with an atomizing inlet of the atomizing machine and is used for supplying a water source to the atomizing machine; a heat source inlet of the heat exchange device is connected with an air outlet of the air chamber. By means of the design, waste heat generated by the furnace body can be effectively recycled, and the resource utilization rate is increased; and the furnace body does not need to be transformed, implementation is easy, and the input cost is low.

Description

Technical Field

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

[0002] Gasification melting technology is an important development direction for the efficient and clean incineration of the new generation of solid waste. This technology combines the advantages of garbage gasification and ash melting technology. Its working principle is that solid waste enters the gasifier after pretreatment, and undergoes thermal cracking and gasification in an oxygen-deficient reducing atmosphere. Then the gasified solid waste enters the melting furnace for high-temperature combustion to generate glassy slag. This technology achieves complete harmlessness, significant compatibility, wide material adaptability and efficient energy and material recovery, and is called a new generation of waste treatment technology.

[0003] Usually, for the waste heat recovery of gasifiers and melting furnaces, only the waste heat of the high-temperature tail gas generated by the gasifier or melting furnace is recovered. However, the waste heat of the gasifier and melting furnace themselves has not been well utilized. The existing technology is to add another layer of shell to the outer furnace wall of the gasifier and melting furnace, pass water inside, and make a water-cooled wall. The water is heated to form high-temperature and high-pressure water vapor, and then the heat carried by this part of the high-temperature water vapor is recovered. However, because water vapor will generate high pressure, the outer shell is usually a shell that can withstand high pressure. This waste heat recovery technology is technically difficult to implement, the investment cost is also high, and it also has high safety risks. Therefore, the market usually installs high-temperature resistant materials on the inside of the furnace wall, and abandons this part of the waste heat that can be used for recovery. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a device and equipment for recovering waste heat from gasification and melting, so as to solve the technical problems of high difficulty and high cost in the existing recovery of waste heat from the furnace body.

[0005] In order to achieve the above technical objectives, the present application provides a device for recovering waste heat from gasification and melting, including an air chamber, an atomizer, a water replenisher, a fan and a heat exchange device;

[0006] The gas chamber is provided with a sealed chamber for loading the furnace body of the gasification and melting device;

[0007] The air chamber is provided with an air inlet and an air outlet;

[0008] The air inlet end of the fan is connected to the atomization outlet of the atomizer, and the air outlet end is connected to the air inlet of the air chamber, so as to transport the water vapor generated by the atomizer to the air chamber;

[0009] The water replenishment outlet of the water replenishing machine is connected to the atomization inlet of the atomizing machine, so as to supply water to the atomizing machine;

[0010] The heat source inlet of the heat exchange device is connected to the air outlet of the air chamber.

[0011] Furthermore, the heat exchange device includes an evaporator and / or a heat exchanger.

[0012] Furthermore, the evaporator is connected to a waste heat power generation device.

[0013] Furthermore, the heat exchanger is connected to a storage container.

[0014] Furthermore, the heat exchange device is also connected to the water replenishing machine or to the atomization inlet of the atomizer, so that the water vapor generated by the atomizer flows back to the water replenishing machine or the atomizer after heat exchange through the heat exchange device.

[0015] Furthermore, the outer surface of the air chamber is coated with a heat insulating material.

[0016] Furthermore, the thermal insulation material is rock wool.

[0017] Furthermore, a safety valve is installed on the air chamber.

[0018] Furthermore, a mounting frame is provided on one side of the air chamber;

[0019] The mounting frame is used for mounting the water replenishing machine, the atomizing machine, the fan and the heat exchange device.

[0020] The present application also discloses a gasification melting device, including a gasification melting furnace device and the waste heat recovery device for gasification melting;

[0021] The furnace body of the gasification melting furnace device is installed in the gas chamber of the gasification melting waste heat recovery device.

[0022] It can be seen from the above technical solutions that the waste heat recovery device for gasification and melting designed in this application is designed to provide the furnace body of the gasification and melting device with a closed air chamber, without the need to process the furnace body of the gasification and melting device; the low-temperature water vapor generated by the atomizer is then sent into the air chamber through a fan to absorb the high temperature generated when the furnace body is working, and then the heat is recovered through a heat exchange device. The above design has the following beneficial effects: 1. The waste heat generated by the furnace body itself can be effectively recovered to improve resource utilization; 2. The recovered waste heat can generate economic value, thereby reducing costs; 3. The furnace body can be cooled to protect the furnace body from being affected by high temperature and affecting its service life; 4. There is no need to modify the furnace body, which is simple to implement and has low investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 A schematic structural diagram of a gasification and melting waste heat recovery device provided in this application with a gasification and melting device;

[0025] In the figure: 1. water replenishing machine; 2. atomizer; 3. fan; 4. air chamber; 5. heat exchange device; 51. evaporator; 52. heat exchanger; 6. cold water source; 7. storage container; 8. waste heat power generation device; 9. gasification and melting device. DETAILED DESCRIPTION

[0026] 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 them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0027] 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.

[0028] 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.

[0029] The embodiment of the present application discloses a device for recovering waste heat from gasification and melting.

[0030] See also Figure 1 , an embodiment of a gasification and melting waste heat recovery device provided in the embodiments of the present application includes:

[0031] Air chamber 4, atomizer 2, water replenisher 1, fan 3 and heat exchange device 5.

[0032] A sealed chamber is provided in the gas chamber 4 for loading the furnace body of the gasification and melting device 9 therein.

[0033] The air chamber 4 is provided with an air inlet and an air outlet; the air inlet end of the fan 3 is connected to the atomizing outlet of the atomizer 2, and the air outlet end is connected to the air inlet of the air chamber 4, for conveying the water vapor generated by the atomizer 2 to the air chamber 4; the water replenishment outlet of the water replenishment machine 1 is connected to the atomizing inlet of the atomizer 2, for supplying water to the atomizer 2. The atomizer 2, the water replenishment machine 1 and the fan 3 in the above design are existing equipment in the prior art, and the specific structure is not repeated.

[0034] The heat source inlet of the heat exchange device 5 is connected to the air outlet of the air chamber 4 .

[0035] The waste heat recovery device for gasification and melting designed in the present application is designed to provide a closed air chamber 4 for the furnace body of the gasification and melting device 9 to be loaded, and there is no need to process the furnace body of the gasification and melting device 9; the low-temperature water vapor generated by the atomizer 2 is then sent into the air chamber 4 through the fan 3 to absorb the high temperature generated when the furnace body is working, and then the heat is recovered through the heat exchange device 5. The above design has the following beneficial effects: 1. The waste heat generated by the furnace body itself can be effectively recovered to improve resource utilization; 2. The recovered waste heat can generate economic value, thereby reducing costs; 3. The furnace body can be cooled to protect the furnace body from being affected by high temperature and affecting its service life; 4. There is no need to modify the furnace body, which is simple to implement and has low investment costs.

[0036] The above is an embodiment of a gasification and melting waste heat recovery device provided in the embodiment of the present application. The following is an embodiment of a gasification and melting waste heat recovery device provided in the embodiment of the present application. For details, please refer to Figure 1 .

[0037] Based on the solution of the above embodiment 1:

[0038] Furthermore, the heat exchange device 5 includes an evaporator 51 and / or a heat exchanger 52 .

[0039] Specifically, the heat exchange device 5 may be an evaporator 51 , a heat exchanger 52 , or an evaporator 51 + a heat exchanger 52 .

[0040] Furthermore, the evaporator 51 is connected to the waste heat power generation device 8, and the water vapor exchanges heat with the easily evaporated solvent in the evaporator 51. The solvent absorbs heat and evaporates and then flows to the waste heat power generation device to drive the waste heat power generation device to generate electricity. The coordination between the evaporator and the waste heat power generation device is an existing design and will not be described in detail.

[0041] Furthermore, the heat exchanger 52 is connected to the storage container 7, so that the water vapor can exchange heat with the cold water delivered from the cold water source 6 in the heat exchanger 52. The cold water absorbs heat to form hot water or water vapor and then is stored in the storage container 7. The combination of the heat exchanger and the cold water source is an existing design and will not be elaborated on in detail.

[0042] Through the above design, the high-temperature water vapor in the air chamber can be used to prepare hot water through the heat exchanger 52, and can also be used for waste heat power generation through the evaporator 51; it is also possible to prepare hot water and generate waste heat power at the same time.

[0043] Furthermore, the heat exchange tube 52 is preferably a heat exchange coil, which increases the contact area with the high-temperature water vapor and improves the heat exchange effect.

[0044] Furthermore, the heat exchange device 5 is also connected to the water replenishing machine 1 or the atomization inlet of the atomizer 2, so that the water vapor generated by the atomizer 2 flows back to the water replenishing machine 1 or the atomizer 2 after heat exchange through the heat exchange device 5, so that the water vapor after heat exchange can be recycled and water resources can be saved.

[0045] Furthermore, in order to reduce heat loss, the outer surface of the air chamber 4 is covered with a heat insulating material. Specifically, the heat insulating material can be rock wool. Of course, it can also be other heat insulating materials without limitation.

[0046] Furthermore, a safety valve is installed on the air chamber 4 to improve safety.

[0047] Furthermore, a mounting frame (not shown) is provided on one side of the air chamber 4, and the mounting frame is used to install the water replenishing machine 1, the atomizing machine 2, the fan 3 and the heat exchange device 5. By configuring the mounting frame, the water replenishing machine 1, the atomizing machine 2, the fan 3 and the air chamber 4 are integrated and installed, making the overall structure more compact and reducing the occupied space.

[0048] The working process of the gasification and melting waste heat recovery device designed in this application is as follows:

[0049] The atomizer 2 atomizes the water into low-temperature water vapor, which is then sent to the air chamber 4 by the fan 3, so that the water vapor in the air of the entire air chamber 4 reaches a saturated state.

[0050] The high temperature generated when the furnace is working will transfer heat to the water vapor in the air chamber 4, allowing it to absorb heat. The low-temperature saturated water vapor that absorbs heat becomes high-temperature water vapor. At the same time, the air chamber 4 is pressurized by the fan 3 to further increase its saturated water vapor content, so that the water vapor per unit volume absorbs more heat.

[0051] The high-temperature saturated water vapor reaches the heat exchange device 5 from the air outlet of the air chamber 4 and transfers heat to the heat exchange device 5, so that the heat exchange device 5 generates hot water and / or generates electricity.

[0052] like Figure 1 As shown, the present application also discloses a gasification melting device, including a gasification melting furnace device and a gasification melting waste heat recovery device of the above-mentioned embodiment one or embodiment two; the furnace body of the gasification melting furnace device is installed in the gas chamber 4 of the gasification melting waste heat recovery device.

[0053] The above is a detailed introduction to a gasification and melting waste heat recovery device and a gasification and melting equipment provided in the present application. For a general technician in this field, according to the ideas of the embodiments of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A device for recovering waste heat from gasification and melting, characterized in that: It comprises an air chamber (4), an atomizer (2), a water replenisher (1), a fan (3) and a heat exchange device (5); The gas chamber (4) is provided with a sealed chamber for loading the furnace body of the gasification and melting device (9); The air chamber (4) is provided with an air inlet and an air outlet; The air inlet end of the fan (3) is connected to the atomization outlet of the atomizer (2), and the air outlet end is connected to the air inlet of the air chamber (4), so as to transport the water vapor generated by the atomizer (2) to the air chamber (4); The water replenishment outlet of the water replenishment machine (1) is connected to the atomization inlet of the atomizer (2) for supplying water to the atomizer (2); The heat source inlet of the heat exchange device (5) is connected to the air outlet of the air chamber (4).

2. The device for recovering waste heat from gasification and melting according to claim 1, characterized in that: The heat exchange device (5) comprises an evaporator (51) and / or a heat exchanger (52).

3. The device for recovering waste heat from gasification and melting according to claim 2, characterized in that: The evaporator (51) is connected to a waste heat power generation device (8).

4. The device for recovering waste heat from gasification and melting according to claim 2, characterized in that: The heat exchanger (52) is connected to the storage container (7).

5. The device for recovering waste heat from gasification and melting according to claim 1, characterized in that: The heat exchange device (5) is also connected to the water replenishing machine (1) or to the atomizing inlet of the atomizing machine (2), so that the water vapor generated by the atomizing machine (2) flows back to the water replenishing machine (1) or the atomizing machine (2) after heat exchange through the heat exchange device (5).

6. The device for recovering waste heat from gasification and melting according to claim 1, characterized in that: The outer surface of the air chamber (4) is covered with a heat insulating material.

7. The device for recovering waste heat from gasification and melting according to claim 6, characterized in that: The thermal insulation material is rock wool.

8. The device for recovering waste heat from gasification and melting according to claim 1, characterized in that: A safety valve is installed on the air chamber (4).

9. The device for recovering waste heat from gasification and melting according to claim 1, characterized in that: A mounting frame is provided on one side of the air chamber (4); The mounting frame is used to mount the water replenishing machine (1), the atomizing machine (2), the fan (3) and the heat exchange device (5).

10. Gasification and melting equipment, characterized in that: It comprises a gasification furnace device and a waste heat recovery device for gasification and melting as claimed in any one of claims 1 to 9; The furnace body of the gasification melting furnace device is installed in the gas chamber (4) of the gasification melting waste heat recovery device.

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