High-concentration waste gas combustion furnace of coating equipment

Abstract

The invention provides a high-concentration waste gas combustion furnace of coating equipment, and relates to the technical field of waste gas treatment. The high-concentration waste gas combustion furnace of the coating equipment comprises an equipment mounting table, a waste gas combustion furnace body and a heat exchanger are fixedly mounted on the upper surface of the equipment mounting table, and an exhaust pipeline is fixedly connected to the top of the waste gas combustion furnace body. Gas generated after combustion of the waste gas combustion furnace body is exhausted through the exhaust pipeline, enters the hot gas exhaust pipe through the exhaust pipeline and then enters the heat exchanger through the hot gas exhaust pipe, the installation induced draft fan is started, and the installation induced draft fan introduces air into the heat exchanger through the air introduction pipe; according to the waste gas combustion furnace, heat exchange is conducted between gas exhausted by the waste gas combustion furnace body and cold air, so that the cold air is changed into hot air, the hot air enters the waste gas combustion furnace body through the hot air inlet pipe for oxygen supply, waste heat is recycled, the problem that energy consumed by low-temperature air is increased is solved, and two purposes are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a high-concentration waste gas combustion furnace for coating equipment. Background Art

[0002] Coating is a method of coating paste polymers, molten polymers or polymer melts on paper, cloth, plastic film to obtain composite materials (films). Coating technology is widely used in the coating and composite packaging of substrates such as paper and film. Coating machines are mainly used for surface coating processes of films, paper, etc. This machine coats the rolled substrate with a layer of glue, coating or ink with specific functions, and then rewinds it after drying. There will be varying degrees of environmental pollution in the coating process, mainly air pollution. The main gas pollutants are "volatile organic compounds", abbreviated as VOC in English, mainly including isopropyl alcohol, benzene, toluene, xylene, ethyl acetate, alcohol, acrylic acid, heavy metal silver ions, acetone, etc., which are some organic compounds that can react with nitrogen oxides in the ozone layer of sunlight. VOCs that evaporate into the air will combine with fine dust particles and other substances in smoke to form gray fog, which will irritate the human lungs and have a negative impact on the health of various organisms such as animals and plants.

[0003] Patent announcement number CN211925781U, this utility model belongs to the technical field of waste gas recycling, specifically to a coating room waste gas recycling and waste energy utilization device, the coating room waste gas recycling and waste energy utilization device includes a coating room workbench, a waste gas collection hood is arranged on the upper part of the coating room workbench, the waste gas collection hood is connected to the tail of the large oven through a fan, the large oven is connected to the inlet of the combustion furnace, and the outlet of the combustion furnace is connected to the first heat exchanger and the second heat exchanger in turn. The utility model can reuse volatile substances, convert them into heat to serve production operations for the second time, improve the utilization rate of raw materials and heat utilization rate, and at the same time can greatly reduce the company's investment in manpower, material resources, and financial resources, saving costs and increasing benefits for enterprises.

[0004] However, the above patent does not take into account the temperature of the air entering the combustion furnace and the temperature of the exhaust gas entering the combustion furnace. When the gas with a lower temperature enters the combustion furnace for combustion, it will inevitably consume more energy, especially when cold air enters the combustion furnace, causing unnecessary waste. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a high-concentration exhaust gas combustion furnace for coating equipment, which solves the problem that the prior art does not take into account the temperature of the air entering the combustion furnace and the temperature of the exhaust gas entering the combustion furnace. When the gas with a lower temperature enters the combustion furnace for combustion, it will inevitably consume more energy, especially when cold air enters the combustion furnace, causing unnecessary waste.

[0007] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-concentration waste gas combustion furnace of a coating equipment comprises an equipment mounting platform, a waste gas combustion furnace body and a heat exchanger are fixedly mounted on the upper surface of the equipment mounting platform, an exhaust pipe is fixedly connected to the top of the waste gas combustion furnace body, an end of the exhaust pipe away from the waste gas combustion furnace body is fixedly connected to a hot gas exhaust pipe, an end of the hot gas exhaust pipe away from the exhaust pipe is fixedly connected to the hot gas inlet of the heat exchanger, the cold air inlet of the heat exchanger is connected to an air supply component, and the hot air outlet of the heat exchanger is fixedly connected to a hot air inlet. Tube, one end of the hot air inlet tube away from the heat exchanger is fixedly connected to the air inlet of the exhaust gas combustion furnace body, two vertical mounting plates are fixedly installed on the upper surface of the equipment mounting platform, one of the side walls of the vertical mounting plates is penetrated by a first fixed tube, and the other side wall of the vertical mounting plates is penetrated by a second fixed tube, a spiral mounting tube is rotatably connected between the first fixed tube and the second fixed tube, a power component for driving the spiral mounting tube to rotate is installed on the side wall of the vertical mounting plate, and the end of the second fixed tube is connected to the exhaust gas inlet component.

[0008] Preferably, the air supply assembly includes an induced draft fan fixedly connected to the upper surface of the equipment mounting platform, the inlet of the induced draft fan is fixedly connected to an air inlet duct, the outlet of the induced draft fan is fixedly connected to an air inlet pipe, and the end of the air inlet pipe away from the induced draft fan is fixedly connected to the cold air inlet of the heat exchanger.

[0009] Preferably, the cold air outlet of the heat exchanger is fixedly connected to a cold air exhaust pipe, the outer surface of the hot air inlet pipe is fixedly connected to a hot air inlet branch pipe, the end of the hot air inlet branch pipe away from the hot air inlet pipe is fixedly connected to a second fixed pipe, and a first valve is installed on the hot air inlet branch pipe.

[0010] Preferably, the power assembly includes a servo motor fixedly connected to one of the side walls of the vertically mounted uprights, the output shaft of the servo motor is fixedly connected to a first pulley, the outer surface of the spiral mounting tube is fixedly connected to a second pulley, and the first pulley and the second pulley are connected via a belt drive.

[0011] Preferably, the exhaust gas inlet assembly includes a filter box fixedly connected to the upper surface of the equipment mounting platform, a filter gas pipeline is fixedly connected to one side of the filter box, an end of the filter gas pipeline away from the filter box is fixedly connected to the end of a second fixed pipe, and a second valve is provided on the outer surface of the second fixed pipe.

[0012] Preferably, the side of the filter box away from the filtered gas pipeline is fixedly connected to an exhaust gas inlet pipeline, a third valve is installed on the exhaust gas inlet pipeline, the outer surface of the exhaust gas inlet pipeline is fixedly connected to a smoke exhaust pipeline, a fourth valve is installed on the smoke exhaust pipeline.

[0013] Preferably, a filter plate and a collecting box body are embedded in the side wall of the filter box body, and the collecting box body is located on a side close to the exhaust gas inlet pipe.

[0014] Preferably, a gas branch pipe is fixedly connected to the outer surface of the filtered gas pipe, and one end of the gas branch pipe away from the filtered gas pipe is fixedly connected to the air inlet pipe, and a fifth valve is installed on both the gas branch pipe and the air inlet pipe.

[0015] (III) Beneficial effects The present invention provides a high-concentration waste gas combustion furnace for coating equipment. It has the following beneficial effects: 1. In the present invention, the gas after combustion in the exhaust gas combustion furnace body is discharged through the exhaust pipe, the gas enters the hot gas exhaust pipe through the exhaust pipe, and then enters the heat exchanger through the hot gas exhaust pipe, and the induced draft fan is started and installed, and the induced draft fan is installed to introduce air into the heat exchanger through the air introduction pipe, so that the gas discharged from the exhaust gas combustion furnace body exchanges heat with cold air, thereby converting the cold air into hot air, and the hot air enters the exhaust gas combustion furnace body through the hot air introduction pipe for oxygen supply, which not only recovers the waste heat, but also avoids the problem of increased energy consumption of low-temperature air, thus killing two birds with one stone.

[0016] 2. In the present invention, hot air enters the interior of the second fixed pipe through the hot gas entry branch pipe, so that the hot air is mixed with the incoming exhaust gas. One purpose is to change the temperature of the exhaust gas entering the exhaust gas combustion furnace body, and the other is to reduce the concentration of the exhaust gas and increase the oxygen content in the exhaust gas so that the exhaust gas can be more fully burned after entering the exhaust gas combustion furnace body. In order to improve the mixing effect of the exhaust gas and the hot air, the servo motor is started, and the output shaft of the servo motor rotates with the first pulley, so that the second pulley rotates with the spiral mounting tube, thereby improving the uniformity of the exhaust gas and the hot air.

[0017] 3. In the present invention, the fifth valve on the gas branch pipe is opened, the fifth valve on the air inlet pipe is closed, the fourth valve on the smoke exhaust pipe is opened, the third valve on the exhaust gas inlet pipe is closed, and the induced draft fan is started. Air enters the interior of the filter box through the gas branch pipe, and backwashes the filter plate. Part of the smoke enters the collection box for collection, and part of the smoke is discharged through the smoke exhaust pipe. A filter bag can be installed at the end of the smoke exhaust pipe to collect the smoke to avoid clogging of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the first-view stereoscopic structure of a high-concentration exhaust gas combustion furnace of a coating device provided by the present invention; Figure 2 A second perspective perspective structural diagram of a high-concentration exhaust gas combustion furnace of a coating device provided by the present invention; Figure 3 A top view of a high-concentration waste gas combustion furnace of a coating device provided by the present invention; Figure 4 A front view of a high-concentration waste gas combustion furnace of a coating device provided by the present invention; Figure 5 A side view of a high-concentration waste gas combustion furnace of a coating device provided by the present invention; Figure 6 The high concentration waste gas combustion furnace of the coating equipment provided by the present invention Figure 2 Enlarged view of point A in the middle.

[0019] Among them, 1. Equipment installation platform; 2. Waste gas combustion furnace body; 3. Heat exchanger; 4. Exhaust duct; 5. Hot gas exhaust pipe; 6. Hot air inlet pipe; 7. Install induced draft fan; 8. Air introduction pipe; 9. Cold air exhaust pipe; 10. Vertical installation stand; 11. Spiral installation pipe; 12. First fixed pipe; 13. Second fixed pipe; 14. Servo motor; 15. Hot gas inlet branch pipe; 16. Filter gas pipeline; 17. Filter box; 18. Waste gas inlet pipeline; 19. Filter plate; 20. Collection box; 21. Smoke exhaust pipeline; 22. Gas branch pipeline. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. like Figure 1-Figure 6As shown, an embodiment of the present invention provides a high-concentration exhaust gas combustion furnace for coating equipment, including an equipment installation platform 1, an exhaust gas combustion furnace body 2 and a heat exchanger 3 are fixedly installed on the upper surface of the equipment installation platform 1, an exhaust pipe 4 is fixedly connected to the top of the exhaust gas combustion furnace body 2, an end of the exhaust pipe 4 away from the exhaust gas combustion furnace body 2 is fixedly connected to a hot gas exhaust pipe 5, an end of the hot gas exhaust pipe 5 away from the exhaust pipe 4 is fixedly connected to the hot gas inlet of the heat exchanger 3, and the cold air inlet of the heat exchanger 3 is connected to an air supply component, the air supply component includes an induced draft fan 7 fixedly connected to the upper surface of the equipment installation platform 1, and an induced draft fan 7 is installed The inlet is fixedly connected with an air inlet duct, the outlet of the induced draft fan 7 is fixedly connected with an air introduction pipe 8, and the end of the air introduction pipe 8 away from the induced draft fan 7 is fixedly connected to the cold air inlet of the heat exchanger 3; the cold air outlet of the heat exchanger 3 is fixedly connected with a cold air discharge pipe 9, the outer surface of the hot air inlet pipe 6 is fixedly connected with a hot air inlet branch pipe 15, and the end of the hot air inlet branch pipe 15 away from the hot air inlet pipe 6 is fixedly connected to the second fixed pipe 13, and a first valve is installed on the hot air inlet branch pipe 15, and the induced draft fan 7 is started, and the induced draft fan 7 introduces air into the heat exchanger 3 through the air introduction pipe 8; The hot air outlet of the heat exchanger 3 is fixedly connected to a hot air inlet pipe 6, and one end of the hot air inlet pipe 6 away from the heat exchanger 3 is fixedly connected to the air inlet of the exhaust gas combustion furnace body 2. Two vertical mounting plates 10 are fixedly installed on the upper surface of the equipment mounting platform 1, and a first fixed pipe 12 is passed through and fixedly connected to the side wall of one of the vertical mounting plates 10, and a second fixed pipe 13 is passed through and fixedly connected to the side wall of the other vertical mounting plate 10, and a spiral mounting pipe 11 is rotatably connected between the first fixed pipe 12 and the second fixed pipe 13. A power component for driving the spiral mounting pipe 11 to rotate is installed on the side wall of the vertical mounting plate 10, and the power component includes a servo motor 14 fixedly connected to the side wall of one of the vertical mounting plates 10, and the output shaft of the servo motor 14 is fixedly connected to a first pulley, and the outer surface of the spiral mounting pipe 11 is fixedly connected to a second pulley, and the first pulley and the second pulley are connected through a belt drive; The end of the second fixed pipe 13 is connected to an exhaust gas inlet assembly, which includes a filter box 17 fixedly connected to the upper surface of the equipment mounting platform 1, a filter gas pipeline 16 is fixedly connected to one side of the filter box 17, and the end of the filter gas pipeline 16 away from the filter box 17 is fixedly connected to the end of the second fixed pipe 13, a second valve is arranged on the outer surface of the second fixed pipe 13, an exhaust gas inlet pipeline 18 is fixedly connected to the side of the filter box 17 away from the filter gas pipeline 16, a third valve is installed on the exhaust gas inlet pipeline 18, a smoke exhaust pipeline 21 is fixedly connected to the outer surface of the exhaust gas inlet pipeline 18, and a fourth valve is installed on the smoke exhaust pipeline 21, a filter plate 19 and a collection box 20 are embedded in the side wall of the filter box 17, and the collection box 20 is located on the side close to the exhaust gas inlet pipeline 18, a gas branch pipeline 22 is fixedly connected to the outer surface of the filter gas pipeline 16, and the end of the gas branch pipeline 22 away from the filter gas pipeline 16 is fixedly connected to the air inlet pipe 8, and a fifth valve is installed on both the gas branch pipeline 22 and the air inlet pipe 8.

[0022] Working principle: When in use, the exhaust gas discharge pipe of the coating machine is connected to the exhaust gas inlet pipe 18, and the exhaust gas enters the interior of the filter box 17 through the exhaust gas inlet pipe 18 for filtration, and then enters the interior of the filtered gas pipe 16, enters the interior of the second fixed pipe 13 through the filtered gas pipe 16, and enters the interior of the spiral installation pipe 11 through the second fixed pipe 13; At the same time, the gas after combustion in the exhaust gas combustion furnace body 2 is discharged through the exhaust pipe 4, and the gas enters the hot gas exhaust pipe 5 through the exhaust pipe 4, and then enters the heat exchanger 3 through the hot gas exhaust pipe 5, and the induced draft fan 7 is started and installed. The induced draft fan 7 introduces air into the heat exchanger 3 through the air introduction pipe 8, so that the gas discharged from the exhaust gas combustion furnace body 2 exchanges heat with the cold air, thereby converting the cold air into hot air, and the hot air enters the exhaust gas combustion furnace body 2 through the hot air inlet pipe 6 for oxygen supply; on the other hand, the hot air enters the branch pipe 1 through the hot air 5 enters the interior of the second fixed pipe 13 so that the hot air is mixed with the incoming exhaust gas. One purpose is to change the temperature of the exhaust gas entering the exhaust gas combustion furnace body 2, and the other is to reduce the concentration of the exhaust gas and increase the oxygen content in the exhaust gas so that the exhaust gas can be more fully burned after entering the exhaust gas combustion furnace body 2. In order to improve the mixing effect of the exhaust gas and the hot air, the servo motor 14 is started, and the output shaft of the servo motor 14 rotates with the first pulley, so that the second pulley rotates with the spiral mounting pipe 11, thereby improving the uniformity of the exhaust gas and the hot air. When processing the filter box 17, the backflushing method can be used to open the fifth valve on the gas branch pipe 22, close the fifth valve on the air inlet pipe 8, open the fourth valve on the smoke exhaust pipe 21, close the third valve on the exhaust gas inlet pipe 18, start and install the induced draft fan 7, and the air enters the interior of the filter box 17 through the gas branch pipe 22, and backflushes the filter plate 19. Part of the smoke is collected in the collection box 20, and part of the smoke is discharged through the smoke exhaust pipe 21. A filter bag can be installed at the end of the smoke exhaust pipe 21 to collect the smoke to avoid clogging of the filter plate 19.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-concentration waste gas combustion furnace for coating equipment, comprising an equipment installation platform (1), characterized in that: The upper surface of the equipment installation platform (1) is fixedly mounted with a waste gas combustion furnace body (2) and a heat exchanger (3); the top of the waste gas combustion furnace body (2) is fixedly connected with an exhaust pipe (4); one end of the exhaust pipe (4) away from the waste gas combustion furnace body (2) is fixedly connected with a hot gas exhaust pipe (5); one end of the hot gas exhaust pipe (5) away from the exhaust pipe (4) is fixedly connected with a hot gas inlet of the heat exchanger (3); the cold air inlet of the heat exchanger (3) is connected with an air supply component; the hot gas outlet of the heat exchanger (3) is fixedly connected with a hot air inlet pipe (6); one end of the hot air inlet pipe (6) away from the heat exchanger (3) is fixedly connected with a hot gas outlet of the heat exchanger (3); The air inlet of the device body (2) is fixedly connected, and two vertical mounting plates (10) are fixedly installed on the upper surface of the equipment mounting platform (1), wherein a first fixed pipe (12) is fixedly connected to the side wall of one of the vertical mounting plates (10), and a second fixed pipe (13) is fixedly connected to the side wall of the other vertical mounting plate (10), a spiral mounting pipe (11) is rotatably connected between the first fixed pipe (12) and the second fixed pipe (13), a power component for driving the spiral mounting pipe (11) to rotate is installed on the side wall of the vertical mounting plate (10), and an exhaust gas inlet component is connected to the end of the second fixed pipe (13).

2. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 1, characterized in that: The air supply assembly comprises an induced draft fan (7) fixedly connected to the upper surface of the equipment mounting platform (1); the inlet of the induced draft fan (7) is fixedly connected to an air inlet duct; the outlet of the induced draft fan (7) is fixedly connected to an air introduction pipe (8); and one end of the air introduction pipe (8) away from the induced draft fan (7) is fixedly connected to the cold air inlet of the heat exchanger (3).

3. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 2, characterized in that: The cold air outlet of the heat exchanger (3) is fixedly connected to a cold air discharge pipe (9), the outer surface of the hot air inlet pipe (6) is fixedly connected to a hot air inlet branch pipe (15), one end of the hot air inlet branch pipe (15) away from the hot air inlet pipe (6) is fixedly connected to a second fixed pipe (13), and a first valve is installed on the hot air inlet branch pipe (15).

4. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 3, characterized in that: The power assembly comprises a servo motor (14) fixedly connected to a side wall of one of the vertical mounting plates (10), the output shaft of the servo motor (14) being fixedly connected to a first pulley, the outer surface of the spiral mounting tube (11) being fixedly connected to a second pulley, and the first pulley and the second pulley being connected via a belt drive.

5. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 4, characterized in that: The exhaust gas inlet assembly comprises a filter box (17) fixedly connected to the upper surface of the equipment mounting platform (1), a filter gas pipeline (16) being fixedly connected to one side of the filter box (17), an end of the filter gas pipeline (16) away from the filter box (17) being fixedly connected to the end of a second fixed pipe (13), and a second valve being provided on the outer surface of the second fixed pipe (13).

6. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 5, characterized in that: A waste gas inlet pipe (18) is fixedly connected to a side of the filter box (17) away from the filtered gas pipe (16), a third valve being installed on the waste gas inlet pipe (18), and a smoke exhaust pipe (21) is fixedly connected to an outer surface of the waste gas inlet pipe (18), a fourth valve being installed on the smoke exhaust pipe (21).

7. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 6, characterized in that: A filter plate (19) and a collection box (20) are embedded in the side wall of the filter box (17); the collection box (20) is located on a side close to the exhaust gas inlet pipe (18).

8. The high-concentration exhaust gas combustion furnace of the coating equipment according to claim 7, characterized in that: A gas branch pipe (22) is fixedly connected to the outer surface of the filtered gas pipe (16); one end of the gas branch pipe (22) away from the filtered gas pipe (16) is fixedly connected to the air introduction pipe (8); and a fifth valve is installed on both the gas branch pipe (22) and the air introduction pipe (8).

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