Waste heat collection and utilization device for high-temperature waste gas of smelting furnace

Abstract

The utility model relates to the field of high-temperature waste gas of smelting furnaces, in particular to a waste heat collection and utilization device for high-temperature waste gas of smelting furnaces, which comprises a base, an assembly used for bearing waste gas treatment and waste heat collection and utilization, and a utilization cabin arranged above the base and used for carrying out waste heat utilization on filtered high-temperature waste gas. The waste gas utilization device is provided with the purification cabin, the gas inlet pipeline, the activated carbon filter screen, the fastening bolt, the high-temperature dust removal bag, the vacuum gas pump and the gas supply pipeline, smelting furnace high-temperature waste gas entering from the gas inlet pipeline enters the purification cabin firstly instead of being directly input into the utilization cabin, and the high-temperature waste gas floats upwards at the bottom of the purification cabin; the activated carbon filter screen and the multiple sets of high-temperature dust removal bags are used for filtering, harmful factors contained in the high-temperature waste gas can be removed, corrosivity of the high-temperature waste gas is reduced, and then the filtered high-temperature waste gas is pumped out through the vacuum air pump and the air supply pipeline and input into the utilization cabin to complete waste heat collection and utilization work.

Description

Technical Field

[0001] The utility model relates to the field of high-temperature exhaust gas from a furnace, and in particular to a device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace. Background Art

[0002] The high-temperature exhaust gas from the furnace is high in temperature and corrosive. The exhaust gas is acidic when dissolved in water. The pollutants not only affect the production environment but also damage the surrounding environment. If the high-temperature exhaust gas from the furnace is directly discharged, it will not only pollute the surrounding environment, but also the waste heat contained in the exhaust gas will cause waste of resources. The waste heat collection and utilization device can be used to recycle the high-temperature exhaust gas from the furnace. The waste heat collection and utilization device refers to a device that recycles the waste heat generated in the industrial production process through a series of equipment and technical means.

[0003] After searching, a waste heat utilization device for an aluminum melting furnace with a publication number of CN205718500U is disclosed, which specifically discloses a waste heat utilization device for an aluminum melting furnace, including a furnace body and a preheating chamber, the inner cavity surface wall of the furnace body is provided with evenly distributed electric heating rods, the outer wall of the furnace body is provided with through holes, the outer wall of the furnace body is evenly wrapped with a first heat conducting plate, the furnace body is fixedly connected to the preheating chamber, and is connected with the through holes through an exhaust pipe, the outer wall of the furnace body is provided with a groove, and the groove is in the preheating chamber, a pull plate is provided in the groove, and the inner wall of the preheating chamber is provided with a second heat conducting plate, the waste heat utilization device of the aluminum melting furnace transfers the heat on the furnace body to the preheating chamber through the exhaust pipe, the first heat conducting plate and the second heat conducting plate, and preheats the charge to be melted, so as to reduce the melting time of the aluminum charge, improve the melting efficiency, and dissipate the excess heat, reduce the temperature of the workshop, and ensure the normal temperature of the workshop.

[0004] During the use of the existing waste heat collection and utilization device for high-temperature exhaust gas from the furnace, due to the high temperature of the high-temperature exhaust gas from the furnace and the presence of certain harmful factors, long-term direct input of the high-temperature exhaust gas into the waste heat collection and utilization device will cause a certain degree of corrosion to the internal components and cause unnecessary damage. In addition, the above-mentioned comparative cases also lack the means to treat the high-temperature exhaust gas. Therefore, long-term use not only delays the overall waste heat utilization processing process, but also the loss caused also increases the maintenance cost of the waste heat collection and utilization device.

[0005] Therefore, it is necessary to invent a waste heat collection and utilization device for high-temperature exhaust gas from a furnace to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a waste heat collection and utilization device for high-temperature exhaust gas from a furnace. Through a purification cabin, an air intake pipe, an activated carbon filter, fastening bolts, a high-temperature dust removal bag, a vacuum air pump and an air supply pipe, it can reduce the long-term direct input of high-temperature exhaust gas into the waste heat collection and utilization device, which causes a certain degree of corrosion and damage to internal components. At the same time, the device is equipped with exhaust gas treatment capacity, ensures the overall process of waste heat utilization treatment, and reduces the maintenance cost of the waste heat collection and utilization device. This is to solve the problem that during use of the waste heat collection and utilization device for high-temperature exhaust gas from a furnace in the prior art, due to the high temperature of the high-temperature exhaust gas from the furnace and the presence of certain harmful factors, the high-temperature exhaust gas is directly input into the waste heat collection and utilization device for a long time, which will cause a certain degree of corrosion and unnecessary damage to the internal components. In addition, the above-mentioned comparative case also lacks a means for treating the high-temperature exhaust gas. Therefore, after long-term use, not only the overall waste heat utilization treatment process is delayed, but the loss caused also increases the maintenance cost of the waste heat collection and utilization device.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat collection and utilization device for high-temperature exhaust gas of a melting furnace, comprising a base for carrying components such as exhaust gas treatment and waste heat collection and utilization;

[0008] The utilization cabin is arranged above the base and is used to utilize the waste heat of the filtered high-temperature exhaust gas. A fixing bolt is passed through the outside of the utilization cabin. One end of the fixing bolt is movably connected to a placement rack. A purification cabin is arranged above the placement rack.

[0009] An air intake duct is arranged outside the purification cabin and is used to be connected to the furnace. A mounting flange is fixedly installed on the outside of the air intake duct. An activated carbon filter is fixedly installed inside the purification cabin. A fastening bolt runs through the interior of the purification cabin. One end of the fastening bolt is movably connected to a mounting frame. A high-temperature dust removal bag is fixedly installed inside the mounting frame. An upper cover is fixedly installed above the purification cabin.

[0010] The vacuum air pump is arranged above the upper cover and is used to collect the filtered high-temperature exhaust gas, and an air delivery pipe is fixedly installed at one end of the vacuum air pump.

[0011] Preferably, the purification cabin is fixedly connected to the placement rack, and the fixing bolts are symmetrically arranged with respect to the central axis of the placement rack.

[0012] Preferably, the number of the high-temperature dust removal bags is set to twelve, and the twelve high-temperature dust removal bags are distributed at equal intervals on the mounting frame.

[0013] Preferably, a partition plate is fixedly installed inside the utilization cabin, and a serpentine heat exchange pipe is fixedly installed above the partition plate.

[0014] Preferably, a water inlet is provided on the top of the utilization cabin, a water outlet pipe is fixedly installed on the outside of the utilization cabin, and one end of the water outlet pipe is fixedly connected to an electromagnetic control valve.

[0015] Preferably, a rotating shaft is provided below the partition plate, a steam impeller is fixedly mounted on the outside of the rotating shaft, a generator is fixedly mounted on one end of the rotating shaft, and an air vent is opened on the outside of the utilization cabin.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model is provided with a purification cabin, an air intake pipe, an activated carbon filter, fastening bolts, a high-temperature dust removal bag, a vacuum air pump and an air supply pipe. The high-temperature exhaust gas of the furnace entering from the air intake pipe is not directly input into the utilization cabin, but first enters the purification cabin. The high-temperature exhaust gas floats upward at the bottom of the purification cabin, and is filtered through the activated carbon filter and multiple groups of high-temperature dust removal bags to remove harmful factors contained in the high-temperature exhaust gas, reduce the corrosiveness of the high-temperature exhaust gas itself, and then extract the filtered high-temperature exhaust gas through the vacuum air pump and the air supply pipe and input it into the utilization cabin to complete the waste heat collection and utilization work. In this way, the coordinated use reduces the long-term direct input of high-temperature exhaust gas into the waste heat collection and utilization device, resulting in a certain degree of corrosion and damage to the internal components. At the same time, the device is equipped with exhaust gas treatment capacity, ensuring the overall process of waste heat utilization and treatment, and reducing the maintenance cost of the waste heat collection and utilization device;

[0018] 2. The utility model is provided with a partition plate, a serpentine heat exchange pipe, a rotating shaft, a steam impeller, a generator and an air vent. The partition plate divides the entire utilization cabin into two. Cold water required for heat exchange can be injected into the upper space. The filtered high-temperature exhaust gas will enter the serpentine heat exchange pipe, exchange heat with the external cold water and finally flow out from the outlet pipe. The exhaust gas cooled after the heat exchange can be input into the lower space, so that the exhaust gas blows the steam impeller to rotate, and the steam impeller drives the rotating shaft to rotate synchronously. The rotating shaft is connected to the generator to convert kinetic energy into electrical energy to complete the utilization of waste heat. This enhances the scope of use of the waste heat collection and utilization device, fully utilizes the high-temperature exhaust gas of the furnace and reduces cost waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the purification cabin structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the air delivery pipeline structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the serpentine heat exchange pipeline of the utility model;

[0024] Figure 5 This is a schematic diagram of the steam impeller structure of the utility model.

[0025] Description of reference numerals:

[0026] 1. Base; 2. Utilization cabin; 3. Fixing bolts; 4. Placement rack; 5. Purification cabin; 6. Air intake duct; 7. Mounting flange; 8. Activated carbon filter; 9. Fastening bolts; 10. Mounting rack; 11. High-temperature dust bag; 12. Upper cover; 13. Vacuum air pump; 14. Air supply duct; 15. Partition plate; 16. Serpentine heat exchange duct; 17. Water inlet; 18. Water outlet; 19. Solenoid control valve; 20. Rotating shaft; 21. Steam impeller; 22. Generator; 23. Air vent. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-5 The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace shown comprises a base 1 for carrying components such as exhaust gas treatment and waste heat collection and utilization;

[0029] The utilization cabin 2 is arranged above the base 1 and is used to utilize the waste heat of the filtered high-temperature exhaust gas. A fixing bolt 3 is passed through the outside of the utilization cabin 2. One end of the fixing bolt 3 is movably connected to a placement rack 4. A purification cabin 5 is arranged above the placement rack 4.

[0030] An air inlet pipe 6 is arranged outside the purification cabin 5 and is used to be connected to the furnace. A mounting flange 7 is fixedly installed on the outside of the air inlet pipe 6. An activated carbon filter 8 is fixedly installed inside the purification cabin 5. A fastening bolt 9 runs through the inside of the purification cabin 5. One end of the fastening bolt 9 is movably connected to a mounting frame 10. A high-temperature dust removal bag 11 is fixedly installed inside the mounting frame 10. An upper cover 12 is fixedly installed above the purification cabin 5.

[0031] The vacuum air pump 13 is arranged above the upper cover 12 and is used to collect the filtered high-temperature exhaust gas. An air supply pipe 14 is fixedly installed at one end of the vacuum air pump 13. The high-temperature exhaust gas floats upward at the bottom of the purification cabin 5 and is filtered through the activated carbon filter 8 and multiple groups of high-temperature dust removal bags 11. The harmful factors contained in the high-temperature exhaust gas can be removed and the corrosiveness of the high-temperature exhaust gas itself can be reduced. The filtered high-temperature exhaust gas is then extracted through the vacuum air pump 13 and the air supply pipe 14 and input into the utilization cabin 2 to complete the waste heat collection and utilization work.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the purification cabin 5 is fixedly connected to the placement rack 4, and the fixing bolts 3 are symmetrically arranged with respect to the central axis of the placement rack 4. The purification cabin 5 can be conveniently disassembled from the placement rack 4 after long-term use to clean the interior of the purification cabin 5. The number of high-temperature dust removal bags 11 is set to twelve, and the twelve high-temperature dust removal bags 11 are evenly spaced on the mounting rack 10. Multiple groups of high-temperature dust removal bags 11 and activated carbon filters 8 enhance the device's ability to filter high-temperature exhaust gases from different furnaces.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, a partition plate 15 is fixedly installed inside the cabin 2, and a serpentine heat exchange pipe 16 is fixedly installed above the partition plate 15. The filtered high-temperature exhaust gas will enter the serpentine heat exchange pipe 16, exchange heat with external cold water, and finally flow out from the outlet pipe 18 to complete the utilization of waste heat. A water inlet 17 is opened on the top of the cabin 2, and an outlet pipe 18 is fixedly installed outside the cabin 2. One end of the outlet pipe 18 is fixedly connected to an electromagnetic control valve 19, and the electromagnetic control valve 19 can freely control the amount of hot water flowing out of the outlet pipe 18 to reduce unnecessary waste. A rotating shaft 20 is arranged below the partition plate 15, and a steam impeller 21 is fixedly installed outside the rotating shaft 20. A generator 22 is fixedly installed at one end of the rotating shaft 20. An air vent 23 is opened outside the cabin 2 to allow the exhaust gas to blow the steam impeller 21 to rotate, and the steam impeller 21 drives the rotating shaft 20 to rotate synchronously. The rotating shaft 20 and the generator 22 are connected to convert kinetic energy into electrical energy to complete the utilization of waste heat.

[0034] The working principle of the utility model is as follows: firstly, the external power supply is turned on, and the device is connected and installed with the exhaust pipe of the furnace through the air intake pipe 6 and the mounting flange 7. Then, the high-temperature exhaust gas of the furnace enters the purification cabin 5 through the air intake pipe 6. The high-temperature exhaust gas floats upward at the bottom of the purification cabin 5, and is filtered through the activated carbon filter 8 and multiple groups of high-temperature dust removal bags 11, so as to remove the harmful factors contained in the high-temperature exhaust gas and reduce the corrosiveness of the high-temperature exhaust gas itself. Then, the switch of the vacuum air pump 13 is turned on, and the filtered high-temperature exhaust gas is extracted through the vacuum air pump 13 and the air delivery pipe 14 and input into the utilization cabin 2 and connected with the serpentine heat exchange pipe 16. Then, the partition plate 15 divides the entire utilization cabin 2 into two, and the upper space can be used for heat exchange of hot and cold water. The cold water required for heat exchange is injected from the water inlet 17. The filtered high-temperature exhaust gas will emit high temperature through the serpentine heat exchange pipe 16 during the circulation process, and contact with the external cold water to heat the cold water to complete the mutual heat exchange. After the cold water is heated, the electromagnetic control valve 19 can be opened to let the water flow out from the water outlet pipe 1 8 flows out for use, and then the high-temperature exhaust gas input into the serpentine heat exchange pipe 16 is not stored and immobile, but is constantly circulating. The circulation can not only keep the cold water in the upper space at a high temperature, but also the exhaust gas with a lowered temperature can enter the lower space and continue to be used. Then the exhaust gas is input into the lower space, so that the exhaust gas blows the steam impeller 21 to rotate, and the steam impeller 21 drives the rotating shaft 20 to rotate synchronously. The rotating shaft 20 and the generator 22 are connected to convert kinetic energy into electrical energy to complete the waste heat utilization. After the exhaust gas in the lower space is stored to the upper limit, the exhaust port 23 can be opened to discharge the excess gas. Finally, after completing the installation and use of the waste heat collection and utilization device of the high-temperature exhaust gas of the furnace according to the above operation, turn off the switch of the vacuum air pump 13. If it is not used for a long time, cut off the external power supply. The model of the electromagnetic control valve 19 is: SY5220, and the model of the generator 22 is: GF-200. In this way, the use process of the waste heat collection and utilization device of the high-temperature exhaust gas of the furnace is completed.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for collecting and utilizing waste heat from high-temperature exhaust gas from a furnace, characterized in that: include A base (1) for carrying components for waste gas treatment and waste heat collection and utilization; A utilization cabin (2) is arranged above the base (1) and is used to utilize the waste heat of the filtered high-temperature exhaust gas, and a fixing bolt (3) penetrates the outside of the utilization cabin (2), one end of the fixing bolt (3) is movably connected to a placement rack (4), and a purification cabin (5) is arranged above the placement rack (4); An air intake pipe (6) is arranged outside the purification chamber (5) and is used to be connected to the furnace. A mounting flange (7) is fixedly installed on the outside of the air intake pipe (6). An activated carbon filter (8) is fixedly installed inside the purification chamber (5). A fastening bolt (9) passes through the inside of the purification chamber (5). One end of the fastening bolt (9) is movably connected to a mounting frame (10). A high-temperature dust removal bag (11) is fixedly installed inside the mounting frame (10). An upper cover (12) is fixedly installed above the purification chamber (5); The vacuum air pump (13) is arranged above the upper cover (12) and is used to collect filtered high-temperature exhaust gas, and an air delivery pipe (14) is fixedly installed at one end of the vacuum air pump (13).

2. The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace according to claim 1, characterized in that: The purification cabin (5) is fixedly connected to the placement rack (4), and the fixing bolts (3) are symmetrically arranged with respect to the central axis of the placement rack (4).

3. The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace according to claim 1, characterized in that: The number of the high-temperature dust removal bags (11) is set to twelve, and the twelve high-temperature dust removal bags (11) are distributed at equal intervals on the mounting frame (10).

4. The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace according to claim 1, characterized in that: A partition plate (15) is fixedly installed inside the utilization chamber (2), and a serpentine heat exchange pipe (16) is fixedly installed above the partition plate (15).

5. The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace according to claim 1, characterized in that: A water inlet (17) is provided on the top of the utilization cabin (2), a water outlet pipe (18) is fixedly installed outside the utilization cabin (2), and one end of the water outlet pipe (18) is fixedly connected to an electromagnetic control valve (19).

6. The device for collecting and utilizing waste heat of high-temperature exhaust gas from a furnace according to claim 4, characterized in that: A rotating shaft (20) is arranged below the partition plate (15), a steam impeller (21) is fixedly mounted on the outside of the rotating shaft (20), a generator (22) is fixedly mounted on one end of the rotating shaft (20), and an air vent (23) is opened on the outside of the utilization cabin (2).

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