Flue gas waste heat utilization device of hot galvanizing furnace

Abstract

The utility model provides a flue gas waste heat utilization device of a hot galvanizing furnace, which relates to the technical field of hot galvanizing and comprises a medium exchange component and a purification treatment mechanism. A purification treatment mechanism mounted in a sleeving manner is arranged at the output end of the air inlet heat-proof cleaning assembly, the purification treatment mechanism comprises a bottom sleeve, a cushion partition plate, a conveying fan, a purification cabin, an isolation group frame, a filter element group, an activated carbon bag, a top cover and a pneumatic insertion disc, and the bottom sleeve is arranged at the output end of the air inlet heat-proof cleaning assembly; according to the utility model, the node cabin is arranged on the side of the box body of the medium exchange part, and the sewage draining exit and the cleaning valve block are opened in the cleaning process, so that the entering cleaning water body can effectively discharge dirt out of the equipment after being opened, and therefore, the smoothness of an air passage can be ensured, and the heat exchange efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot-dip galvanizing technology, and in particular to a device for utilizing waste heat from hot-dip galvanizing furnace flue gas. Background Technology

[0002] Zinc strip steel is made by coating long and narrow strips of cold-rolled or hot-rolled steel with a layer of zinc to varying degrees. Hot-dip galvanizing has advantages such as uniform coating, strong adhesion, and long service life. The hot-dip galvanized steel pipe substrate undergoes a complex physical and chemical reaction with the molten galvanizing solution to form a corrosion-resistant, tightly structured zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel strip substrate. During the operation of the hot-dip galvanizing furnace, high-temperature flue gas is generated. Directly releasing this flue gas into the atmosphere not only pollutes the environment but also causes heat loss. In order to recover and utilize the waste heat of the flue gas, it is usually used to heat water.

[0003] Existing waste heat recovery devices, such as the one disclosed in application number CN202221055119.5, which relates to the field of hot-dip galvanizing strip steel manufacturing technology, address the problem of low waste heat utilization rate in existing devices. This device includes a furnace body, a water tank, a preheating box, and a filter box. The preheating box has an internal heat exchange chamber with several second heat exchange tubes equidistantly arranged inside. A second fan is installed on one side of the preheating box, and a heat return pipe connects the side of the heat exchange chamber away from the second fan to the furnace body. However, in the above technology, after prolonged heat exchange, a large amount of dirt easily accumulates in the gas ducts, causing blockages and hindering equipment operation. Therefore, this utility model proposes a waste heat recovery device for hot-dip galvanizing furnace flue gas to solve the problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a waste heat utilization device for hot-dip galvanizing furnace flue gas. This device mainly utilizes a node compartment set on the side of the medium exchange component's housing. During the cleaning process, the drain port and cleaning valve block are opened, allowing the incoming cleaning water to effectively remove dirt from the equipment, thereby ensuring the smooth flow of the gas passage and improving the heat exchange efficiency of the equipment.

[0005] To achieve the purpose of this utility model, the utility model is achieved through the following technical solution: a waste heat utilization device for hot-dip galvanizing furnace flue gas, including a medium exchange component and a purification treatment mechanism, wherein an air inlet heat protection cleaning component is provided on the inner side of the medium exchange component and a purification treatment mechanism is provided on the output end of the air inlet heat protection cleaning component.

[0006] The purification mechanism includes a bottom sleeve, a partition plate, a conveyor fan, a purification chamber, an isolation frame, a filter element assembly, an activated carbon bag, a top cover, and a pneumatic connector. The bottom sleeve is located at the output end of the air intake heat protection cleaning component. A partition plate is located on the inner side of the bottom sleeve, and a conveyor fan is located above the partition plate. The purification chamber is located at the top of the bottom sleeve, and an isolation frame is located on the inner side of the purification chamber. A filter element assembly is located on the lower inner side of the isolation frame, and an activated carbon bag is located on the middle inner side of the isolation frame. The top of the purification chamber is located at the top, and a pneumatic connector is located at the output end of the top cover.

[0007] In a preferred embodiment of this utility model, the isolation frame has a porous structure, and the central axis of the bottom sleeve and the central axis of the purification chamber are on the same straight line and form a series tubular structure.

[0008] In a preferred embodiment of this utility model, the medium exchange component includes a pad, a raised base, a medium contact box, a temperature control display screen, a side plate, and a medium connecting pipe. A raised base with bolts is provided on the upper side of the side of the pad, a medium contact box is provided on the top side of the raised base, and a temperature control display screen is provided on the top of the medium contact box. A side plate is provided on the side of the medium contact box, and a medium connecting pipe is provided at the output end of the side plate.

[0009] In a preferred embodiment of this utility model, the air intake heat protection cleaning assembly includes a first node compartment, a drain outlet, an air pump, an air intake valve, an air intake hood, an air distribution seat, a diffuser pipe, a fin assembly, a second node compartment, a cleaning valve block, a directional valve block, and a connecting valve pipe. The first node compartment is located at one end of the medium contact box, a drain outlet is located below the first node compartment, an air pump is located above the first node compartment, and an air intake valve is located above the air pump. An air intake hood is located at one end of the air intake valve.

[0010] In a preferred embodiment of the present invention, the output end of the first node compartment is provided with a gas distribution seat, and the output end of the gas distribution seat is provided with a gas diffuser pipe, and the outer side of the gas diffuser pipe is provided with a fin assembly that is sleeved and installed.

[0011] In a preferred embodiment of the present invention, the output end of the air distribution pipe is provided with a second node chamber, and a cleaning valve block is provided above the second node chamber, a directional valve block is provided below the second node chamber, and a connecting valve pipe is provided at the output end of the directional valve block.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model mainly utilizes a node compartment set on the side of the tank of the medium exchange component. During the cleaning process, the drain port and the cleaning valve block are opened. After opening, the incoming cleaning water can effectively remove dirt from the equipment, thereby ensuring the smooth flow of the air passage and improving the heat exchange efficiency of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a three-dimensional structural diagram of the air intake heat protection and cleaning component of this utility model;

[0017] Figure 4 This is a cross-sectional three-dimensional structural diagram of the purification treatment mechanism of this utility model.

[0018] The components include: 1. Media exchange components; 101. Pad; 102. Elevated base; 103. Media contact box; 104. Temperature control display screen; 105. Side plate; 106. Media connecting pipe; 2. Inlet heat protection and cleaning components; 201. First node compartment; 202. Drain outlet; 203. Air pump; 204. Inlet valve; 205. Inlet hood; 206. Air distribution seat; 207. Air distribution pipe; 208. Fin assembly; 209. Second node compartment; 2010. Cleaning valve block; 2011. Directional valve block; 2012. Connecting valve pipe; 3. Purification treatment mechanism; 301. Bottom sleeve; 302. Pad partition; 303. Conveyor fan; 304. Purification chamber; 305. Isolation frame; 306. Filter element assembly; 307. Activated carbon bag; 308. Top cover; 309. Pneumatic connector plate. Detailed Implementation

[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0020] according to Figure 1-4 As shown, this embodiment proposes a waste heat utilization device for hot-dip galvanizing furnace flue gas, including a medium exchange component 1 and a purification treatment mechanism 3. An air inlet heat protection cleaning component 2 is provided on the inner side of the medium exchange component 1, and the output end of the air inlet heat protection cleaning component 2 is provided with a purification treatment mechanism 3.

[0021] The purification treatment mechanism 3 includes a bottom sleeve 301, a partition plate 302, a conveyor fan 303, a purification chamber 304, an isolation frame 305, a filter element assembly 306, an activated carbon bag 307, a top cover 308, and a pneumatic connector 309. The bottom sleeve 301 is located at the output end of the air inlet heat protection cleaning component 2. The partition plate 302 is located on the inner side of the bottom sleeve 301, and the conveyor fan 303 is located above the partition plate 302. The purification chamber 304 is located at the top of the bottom sleeve 301, and the isolation frame 305 is located on the inner side of the purification chamber 304. The filter element assembly 306 is located on the lower inner side of the isolation frame 305, and the activated carbon bag 307 is located on the middle inner side of the isolation frame 305. The top cover 308 is located at the top of the purification chamber 304, and the pneumatic connector 309 is located at the output end of the top cover 308.

[0022] The isolation frame 305 has a porous structure, and the central axis of the bottom sleeve 301 and the central axis of the purification chamber 304 are on the same straight line and form a series tubular structure.

[0023] In this embodiment, the output end is driven by the power output of the pad plate 302 on the bottom sleeve 301, so that the conveyor fan 303 is opened and the material is input into the purification chamber 304. The material is effectively purified by the filter element group 306 on the isolation frame 305 in conjunction with the activated carbon bag 307. After purification, the material is finally discharged from the equipment by opening the pneumatic plug-in plate 309 on the inner side of the top cover 308.

[0024] The medium exchange component 1 includes a pad 101, a raised base 102, a medium contact box 103, a temperature control display screen 104, a side plate 105, and a medium connecting pipe 106. The raised base 102, which is bolted, is provided on the upper side of the side of the pad 101. The medium contact box 103 is provided on the top side of the raised base 102, and the temperature control display screen 104 is provided on the top of the medium contact box 103. The side plate 105 is provided on the side of the medium contact box 103, and the medium connecting pipe 106 is provided at the output end of the side plate 105.

[0025] In this embodiment, after the heat is dissipated, the temperature control display screen 104 detects the heat of the medium contact box 103, displays the temperature, and inputs the material through the medium connecting pipe 106 on the side of the side plate 105. After the material is input, heat exchange operation is carried out, thereby realizing the effect of waste heat utilization.

[0026] The air intake heat protection cleaning assembly 2 includes a first node compartment 201, a drain outlet 202, an air pump 203, an air intake valve 204, an air intake hood 205, an air distribution seat 206, a diffuser pipe 207, a fin assembly 208, a second node compartment 209, a cleaning valve block 2010, a directional valve block 2011, and a connecting valve pipe 2012. The first node compartment 201 is located at one end of the medium contact box 103. The drain outlet 202 is located below the first node compartment 201. The air pump 203 is located above the first node compartment 201, and the air intake valve 204 is located above the air pump 203. The air intake hood 205 is located at one end of the air intake valve 204.

[0027] In this embodiment, during use, the drain port 202 is closed, so that the air intake hood 205 is connected to the furnace body, the air intake valve 204 is opened, and the air pump 203 is started to output power for operation, so that the air intake valve 204 and the air intake hood 205 input the exhaust gas into the first node compartment 201.

[0028] The first node compartment 201 is provided with an air distribution seat 206 at its output end, and an air distribution pipe 207 is provided at the output end of the air distribution seat 206. A fin assembly 208 is provided on the outer side of the air distribution pipe 207.

[0029] In this embodiment, after the gas is input, the exhaust gas enters the gas distribution seat 206 inside the medium contact box 103, so that the gas distribution seat 206 inputs the exhaust gas into the gas distribution pipe 207 and cooperates with the fin assembly 208 to achieve the effect of rapid heat dissipation.

[0030] The outlet end of the vent pipe 207 is provided with a second node compartment 209, and a cleaning valve block 2010 is provided above the second node compartment 209. A directional valve block 2011 is provided below the second node compartment 209, and a connecting valve pipe 2012 is provided at the outlet end of the directional valve block 2011.

[0031] In this embodiment, after the heat is discharged, the exhaust pipe 207 inputs the cooled exhaust gas into the second node chamber 209, and then inputs it into the directional valve block 2011 through the second node chamber 209. After the valve block 2011 is opened, it is input into the purification treatment mechanism 3 through the connecting valve pipe 2012.

[0032] The working principle of the waste heat recovery device for hot-dip galvanizing furnace flue gas is as follows: During operation, the drain port 202 is closed, connecting the air inlet hood 205 to the furnace body. This opens the air inlet valve 204 and starts the air pump 203, allowing the exhaust gas to be input into the first node chamber 201 via the air inlet valve 204 and air inlet hood 205. After gas input, the exhaust gas enters the gas distributor 206 inside the medium contact box 103. The gas distributor 206 then directs the exhaust gas into the diffuser pipe 207, which, in conjunction with the finned assembly 208, achieves rapid heat dissipation. Once the heat is dissipated, the temperature control display screen 104 detects the heat in the medium contact box 103, displays the temperature, and transmits the temperature through the medium connecting pipe 10 on the side of the side plate 105. 6. Material is input, and heat exchange is performed to achieve waste heat utilization. After the heat is discharged, the cooling waste gas is input into the second node chamber 209 through the vent pipe 207, and then into the directional valve block 2011 through the second node chamber 209. After opening, it is input into the purification treatment mechanism 3 through the connecting valve pipe 2012. Then, the output end is driven by the output power of the pad plate 302 on the bottom sleeve 301, so that the conveyor fan 303 is opened and the material is input into the purification chamber 304. The material is effectively purified by the filter element group 306 on the isolation frame 305 in conjunction with the activated carbon bag 307. After purification, the material is finally discharged from the equipment through the pneumatic plug plate 309 on the inner side of the top cover 308.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste heat utilization device for hot-dip galvanizing furnace flue gas, comprising a medium exchange component (1) and a purification treatment mechanism (3), characterized in that: The media exchange component (1) is provided with an air intake heat protection cleaning component (2) installed in a sleeve on the inner side, and the output end of the air intake heat protection cleaning component (2) is provided with a purification treatment mechanism (3) installed in a sleeve. The purification mechanism (3) includes a bottom sleeve (301), a partition plate (302), a conveyor fan (303), a purification chamber (304), an isolation frame (305), a filter element assembly (306), an activated carbon bag (307), a top cover (308), and a pneumatic connector (309). The bottom sleeve (301) is located at the output end of the air inlet heat protection cleaning assembly (2). A partition plate (302) is provided on the inner side of the bottom sleeve (301), and a [missing information - likely a device or component] is provided above the partition plate (302). The conveyor fan (303) has a purification chamber (304) at the top of the bottom sleeve (301), and an isolation frame (305) is provided on the inner side of the purification chamber (304). A filter element group (306) is provided on the lower inner side of the isolation frame (305), and an activated carbon bag (307) is provided on the middle inner side of the isolation frame (305). A top cover (308) is provided at the top of the purification chamber (304), and a pneumatic plug-in plate (309) is provided at the output end of the top cover (308).

2. The waste heat recovery device for hot-dip galvanizing furnace flue gas according to claim 1, characterized in that: The isolation frame (305) has a porous structure, and the central axis of the bottom sleeve (301) and the central axis of the purification chamber (304) are on the same straight line and form a series tubular structure.

3. The waste heat recovery device for hot-dip galvanizing furnace flue gas according to claim 1, characterized in that: The medium exchange component (1) includes a pad (101), a raised base (102), a medium contact box (103), a temperature control display screen (104), a side plate (105), and a medium connecting pipe (106). The raised base (102) is bolted on the upper side of the pad (101). The medium contact box (103) is provided on the top side of the raised base (102). The temperature control display screen (104) is provided on the top of the medium contact box (103). The side plate (105) is provided on the side of the medium contact box (103). The medium connecting pipe (106) is provided at the output end of the side plate (105).

4. The waste heat recovery device for hot-dip galvanizing furnace flue gas according to claim 3, characterized in that: The air intake heat protection cleaning assembly (2) includes a first node compartment (201), a drain port (202), an air pump (203), an air intake valve (204), an air intake hood (205), an air distribution seat (206), an air distribution pipe (207), a fin assembly (208), a second node compartment (209), a cleaning valve block (2010), a directional valve block (2011), and a connecting valve pipe (2012). The first node compartment (201) is located at one end of the medium contact box (103). A drain port (202) is located below the first node compartment (201). An air pump (203) is located above the first node compartment (201), and an air intake valve (204) is located above the air pump (203). An air intake hood (205) is located at one end of the air intake valve (204).

5. The waste heat recovery device for hot-dip galvanizing furnace flue gas according to claim 4, characterized in that: The first node compartment (201) is provided with a gas distribution seat (206) at its output end, and the gas distribution seat (206) is provided with a gas diffuser pipe (207) at its output end. A fin assembly (208) is provided on the outer side of the gas diffuser pipe (207).

6. The waste heat utilization device for hot-dip galvanizing furnace flue gas according to claim 4, characterized in that: The outlet end of the air vent (207) is provided with a second node compartment (209), and a cleaning valve block (2010) is provided above the second node compartment (209), a directional valve block (2011) is provided below the second node compartment (209), and a connecting valve pipe (2012) is provided at the outlet end of the directional valve block (2011).

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