Waste gas low-temperature combustion equipment

Abstract

The utility model discloses waste gas low-temperature combustion equipment, and particularly relates to the technical field of industrial waste gas combustion treatment, which comprises a combustion box, a gas inlet of the combustion box is fixedly connected with a preheating box, a top exhaust port of the combustion box is fixedly connected with a preheating conversion box, and the middle of the combustion box is fixedly connected with a partition plate. A plurality of electric heating net plates are fixedly connected to the bottom of the partition plate, a supporting plate is inserted into the top of the combustion box, and a catalyst storage box is fixedly connected to one side of the supporting plate. Firstly, purified high-temperature gas entering the preheating conversion box is subjected to heat absorption through the heat conversion box, the first heat exchange pipe and the second heat exchange pipe, and heated liquid in the heat conversion box, the first heat exchange pipe and the second heat exchange pipe is input into the third heat exchange pipe to preheat waste gas in the preheating box; therefore, the temperature difference between input waste gas and combustion gas in the combustion box is reduced, temperature impact is avoided, the stability of combustion reaction is improved, and the reaction efficiency and effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste gas combustion treatment technology, and more specifically, to a low-temperature combustion device for waste gas. Background Technology

[0002] Catalytic combustion of waste gas involves the rapid oxidation of hydrocarbons in organic waste gas into water and carbon dioxide at relatively low temperatures under the action of a catalyst, thus achieving the purpose of treatment. Catalytic combustion enables fuels to achieve complete combustion at lower temperatures, playing a crucial role in improving the combustion process, reducing reaction temperature, promoting complete combustion, and inhibiting the formation of toxic and harmful substances.

[0003] Traditional waste gas combustion treatment methods rely heavily on high-temperature combustion, which is extremely energy-intensive. It not only consumes a lot of fuel but also places stringent requirements on the high-temperature resistant materials of the equipment, resulting in high equipment costs and maintenance expenses. Existing low-temperature waste gas combustion equipment directly inputs the filtered waste gas into the combustion chamber for low-temperature combustion treatment. The temperature difference between the incoming waste gas and the high-temperature waste gas inside is large, which can easily cause temperature shock problems. Once the two are suddenly mixed, they can easily trigger a series of chain reactions, which seriously interfere with the heating and combustion effect and affect the efficiency and effect of the combustion reaction. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a low-temperature combustion device for exhaust gas to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature combustion device for waste gas, comprising a combustion chamber, wherein a preheating chamber is fixedly connected to the air inlet of the combustion chamber, and the waste gas entering the combustion chamber is preheated by the preheating chamber to improve the heating effect; a preheating conversion chamber is fixedly connected to the exhaust port at the top of the combustion chamber, and the preheating conversion chamber can absorb and convert the heat in the gas discharged after combustion treatment; a partition plate is fixedly connected to the middle of the combustion chamber, and multiple electric heating mesh plates are fixedly connected to the bottom of the partition plate, and the electric heating mesh plates can uniformly heat the waste gas entering the combustion chamber to improve the heating effect; a support plate is inserted into the top of the combustion chamber, and a catalyst storage box is fixedly connected to one side of the support plate, and the catalyst storage box facilitates the storage of catalyst and improves the decomposition quality of harmful ions in the waste gas;

[0006] A perforated plate is fixedly connected to the middle of the preheating box. A rotating rod is inserted into the middle of the perforated plate. Spiral blades and dispersing fan blades are fixedly connected to both ends of the rotating rod, respectively. Two limiting discs are fixedly connected to the middle of the rotating rod. The perforated plate can disperse the gas entering the preheating box. The gas pushes the spiral blades, causing the rotating rod to drive the dispersing fan blades to rotate. This facilitates the dispersion of the exhaust gas passing through the middle of the perforated plate, improves the exhaust gas dispersion effect, and improves the stability of the rotating rod's rotation through the limiting discs.

[0007] Two third heat exchange tubes are fixedly connected to the middle of the preheating box. A heat conversion box is also fixedly connected to the middle of the preheating box. Second heat exchange tubes and first heat exchange tubes are connected to the upper and lower sides of the heat conversion box, respectively. Multiple heat exchange risers are fixedly connected to the middle of the heat conversion box. Multiple through holes are opened on the surface of the heat conversion box. A liquid pump is fixedly connected to one side of the preheating conversion box. When the liquid pump is started, cold water is introduced into the interior of the second heat exchange tube and then into the interior of the heat conversion box through the second heat exchange tube. Then, the heat of the exhaust gas inside the preheating conversion box is absorbed through the middle of the first heat exchange tube and introduced into the interior of the third heat exchange tube to preheat the gas entering the preheating box, thereby improving the preheating effect. The cooled liquid is then discharged through the third heat exchange tube.

[0008] Preferably, an air inlet pipe is fixedly connected to one side of the preheating box, and an exhaust pipe is fixedly connected to the top of the preheating conversion box. The filtered exhaust gas is input into the interior of the preheating box through the preheating conversion box, and the treated gas is discharged through the air inlet pipe.

[0009] Preferably, the end of the rotating rod near the helical blade extends into the interior of the intake pipe, and one end of the helical blade is located in the middle of the intake pipe. When exhaust gas enters the interior of the intake pipe, it can impact the helical blade, thereby causing the helical blade to drive the rotating rod to generate rotational force.

[0010] Preferably, the dispersing fan blades are located on the side of the perforated plate away from the air inlet pipe, and the two limiting discs are located on both sides of the perforated plate. The dispersing fan blades can further disperse the gas after it has partially dispersed in the perforated plate, thereby improving the gas dispersion effect and thus improving the preheating effect. The limiting discs also improve the stability of the rotating rod.

[0011] Preferably, the third heat exchange tube is located on the side of the perforated plate near the combustion chamber, the middle of the two third heat exchange tubes are connected, and support rods are symmetrically fixed around the third heat exchange tube. The heat inside the third heat exchange tube can be dissipated through the third heat exchange tube to preheat the exhaust gas passing through the gap of the third heat exchange tube.

[0012] Preferably, one end of one of the third heat exchange tubes is connected to one end of the first heat exchange tube, and one end of the other third heat exchange tube is connected to the input end of the liquid pump.

[0013] Preferably, the output end of the liquid pump is connected to the inner cavity of the second heat exchange tube, and the middle parts of both the second heat exchange tube and the first heat exchange tube are connected to the inner cavity of the heat conversion box.

[0014] Preferably, the through holes correspond one-to-one with the heat exchange risers. The through holes penetrate the middle of the heat exchange risers. The treated hot gas is input into the preheating conversion box and heats the liquid inside the first heat exchange tube. Then, the exhaust gas passes through the middle of the through holes and heats the liquid in the middle of the heat conversion box through the heat exchange risers and the heat conversion box, further heating the liquid inside the second heat exchange tube. This allows hot water to be input into the third heat exchange tube from one end of the first heat exchange tube to heat the exhaust gas passing through the gaps in the third heat exchange tube, achieving the function of waste heat reuse and improving the heating and combustion effect of the exhaust gas.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model first absorbs heat from the purified high-temperature gas entering the preheating conversion box through a heat conversion box and the first and second heat exchange tubes. Then, the heated liquid inside the heat conversion box, the first and second heat exchange tubes is introduced into the third heat exchange tube to preheat the exhaust gas inside the preheating box. This reduces the temperature difference between the input exhaust gas and the combustion gas inside the combustion box, avoids temperature shock, improves the stability of the combustion reaction, and improves the reaction efficiency and effect.

[0017] 2. This utility model also uses a perforated plate to disperse the gas entering the preheating box, and the gas pushes the spiral blades, causing the rotating rod to drive the dispersing fan blades to rotate, which facilitates the dispersion of the exhaust gas passing through the middle of the perforated plate, improves the exhaust gas dispersion effect, thereby improving the uniformity of the fit between the exhaust gas and the third heat exchange tube, improving the uniformity of preheating, improving the preheating effect, and improving the stability of the rotating rod through the third heat exchange tube. In addition, the heat exchange box and the through holes and heat exchange risers can improve the heat exchange efficiency and effect, and improve the use effect.

[0018] In summary, through the interaction of the above-mentioned multiple effects, the waste heat of the purified gas can be used to preheat the incoming exhaust gas, thereby reducing the temperature difference between the input exhaust gas and the combustion gas inside the combustion chamber, avoiding temperature shock, improving the stability of the combustion reaction, and improving the reaction efficiency and effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0021] Figure 3This is a schematic diagram showing the disassembled structure of the rotating rod and the perforated plate of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the third heat exchange tube of this utility model.

[0023] Figure 5 This is a schematic diagram showing the disassembled structure of the second heat exchange tube, the heat conversion box, and the first heat exchange tube of this utility model.

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the heat transfer box of this utility model.

[0025] The attached diagram is labeled as follows: 1. Combustion chamber; 2. Preheating chamber; 3. Preheating conversion chamber; 4. Support plate; 5. Catalyst storage box; 6. Divider plate; 7. Electric heating mesh plate; 8. Perforated plate; 9. Rotating rod; 10. Spiral blade; 11. Dispersion fan blade; 12. Limiting plate; 13. Inlet pipe; 14. Exhaust pipe; 15. Liquid pump; 16. Heat conversion chamber; 17. First heat exchange tube; 18. Second heat exchange tube; 19. Through hole; 20. Heat exchange riser; 21. Third heat exchange tube; 22. Support rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] As attached Figure 1-5 The waste gas low-temperature combustion equipment shown includes a combustion chamber 1. A preheating chamber 2 is fixedly connected to the air inlet of the combustion chamber 1. The preheating chamber 2 preheats the waste gas entering the combustion chamber 1, improving the heating effect. A preheating conversion chamber 3 is fixedly connected to the exhaust port at the top of the combustion chamber 1. The preheating conversion chamber 3 absorbs and converts the heat in the gas when it is discharged after combustion. A partition plate 6 is fixedly connected to the middle of the combustion chamber 1. Multiple electric heating mesh plates 7 are fixedly connected to the bottom of the partition plate 6. The electric heating mesh plates 7 can evenly heat the waste gas entering the combustion chamber 1, improving the heating effect. A support plate 4 is inserted into the top of the combustion chamber 1. A catalyst storage box 5 is fixedly connected to one side of the support plate 4. The catalyst storage box 5 facilitates the storage of catalyst and improves the decomposition quality of harmful ions in the waste gas.

[0028] A perforated plate 8 is fixedly connected to the middle of the preheating box 2. A rotating rod 9 is inserted into the middle of the perforated plate 8. Spiral blades 10 and dispersing fan blades 11 are fixedly connected to both ends of the rotating rod 9, respectively. Two limiting discs 12 are fixedly connected to the middle of the rotating rod 9. Two third heat exchange tubes 21 are fixedly connected to the middle of the preheating box 2. A heat conversion box 16 is fixedly connected to the middle of the preheating box 2. Second heat exchange tubes 18 and first heat exchange tubes 17 are connected to the upper and lower sides of the heat conversion box 16, respectively. Multiple heat exchange risers 20 are fixedly connected to the middle of the heat conversion box 16. Multiple through holes 19 are opened on the surface of the heat conversion box 16. A liquid pump 15 is fixedly connected to one side of the preheating conversion box 3. The liquid pump can be pumped through the perforated plate 8. The gas inside the preheating box 2 is dispersed, and the gas pushes the spiral blades 10, causing the rotating rod 9 to drive the dispersing fan blades 11 to rotate, which facilitates the dispersion of the exhaust gas passing through the middle of the perforated plate 8 and improves the exhaust gas dispersion effect. The limiting plate 12 improves the stability of the rotation of the rotating rod 9. The liquid pump 15 is started to input cold water into the second heat exchange tube 18 and then into the heat conversion box 16. Then, the heat of the exhaust gas inside the preheating conversion box 3 is absorbed through the middle of the first heat exchange tube 17 and input into the third heat exchange tube 21 to preheat the gas entering the preheating box 2, improve the preheating effect, and the cooled liquid is discharged through the third heat exchange tube 21.

[0029] As attached Figure 1-6As shown, an intake pipe 13 is fixedly connected to one side of the preheating box 2, and an exhaust pipe 14 is fixedly connected to the top of the preheating conversion box 3. The rotating rod 9 extends into the interior of the intake pipe 13 from one end near the spiral blade 10. One end of the spiral blade 10 is located in the middle of the intake pipe 13. The dispersion fan 11 is located on the side of the perforated plate 8 away from the intake pipe 13. Two limiting discs 12 are located on both sides of the perforated plate 8. The third heat exchange tube 21 is located on the side of the perforated plate 8 near the combustion box 1. The middle parts of the two third heat exchange tubes 21 are connected. The third heat exchange tube 21 is located around the perimeter of the combustion box 1. A symmetrically fixed support rod 22 is provided. One end of one third heat exchange tube 21 is connected to one end of the first heat exchange tube 17, and one end of the other third heat exchange tube 21 is connected to the input end of the liquid pump 15. The output end of the liquid pump 15 is connected to the inner cavity of the second heat exchange tube 18. The middle parts of both the second heat exchange tube 18 and the first heat exchange tube 17 are connected to the inner cavity of the heat conversion box 16. Through holes 19 correspond one-to-one with heat exchange risers 20, and the through holes 19 penetrate the middle of the heat exchange risers 20. The filtered exhaust gas is then introduced into the preheating box 2 through the preheating conversion box 3. The treated gas is discharged through the intake pipe 13. The exhaust gas enters the interior of the intake pipe 13 and impacts the spiral blades 10, causing the spiral blades 10 to drive the rotating rod 9 to generate rotational force. The dispersion fan 11 can further disperse the gas after it has been partially dispersed in the perforated plate 8, improving the exhaust gas dispersion effect and thus improving the preheating effect. The limiting plate 12 improves the stability of the rotating rod 9. The heat inside the third heat exchange tube 21 can be dissipated through the gaps in the third heat exchange tube 21. The exhaust gas is preheated, and the treated hot gas is input into the preheating conversion box 3 to heat the liquid inside the first heat exchange tube 17. Then, the exhaust gas passes through the middle of the through hole 19 and can heat the liquid in the middle of the heat conversion box 16 through the heat exchange riser 20 and the heat conversion box 16, further heating the liquid inside the second heat exchange tube 18. Hot water can be input into the third heat exchange tube 21 at one end of the first heat exchange tube 17 to heat the exhaust gas passing through the gap of the third heat exchange tube 21, realizing the function of waste heat reuse and improving the heating and combustion effect of exhaust gas.

[0030] The working principle of this utility model is as follows: When in use, the filtered waste gas is input into the preheating box 2 through the air inlet pipe 13, impacting the spiral blades 10, causing the rotating rod 9 to drive the dispersing fan blades 11 to rotate, and the waste gas can be dispersed through the perforated plate 8, and the waste gas is stirred by the dispersing fan blades 11 to improve the dispersion effect. The waste gas is then input into the partition plate 6 and heated by the electric heating mesh plate 7 to burn the waste gas, and in combination with the catalyst in the catalyst storage box 5, the waste gas is purified.

[0031] The purified gas is fed into the preheating conversion box 3. At the same time, the liquid pump 15 is started to feed cold water into the second heat exchange tube 18 and into the heat conversion box 16 and the first heat exchange tube 17. When the purified gas passes through the gap of the first heat exchange tube 17, it heats the liquid in the middle of the first heat exchange tube 17. Then, it heats the liquid in the middle of the heat conversion box 16 through the middle of the through hole 19. The gas heats the liquid in the middle of the second heat exchange tube 18 through the gap, thus achieving the function of heat exchange. Then, it is discharged through the exhaust pipe 14.

[0032] The heating liquid in the middle of the second heat exchange tube 18 and heat conversion box 16, and the first heat exchange tube 17 is input into the interior of the third heat exchange tube 21 to preheat the exhaust gas passing through the surface of the third heat exchange tube 21, saving energy consumption in the exhaust gas treatment process and improving the usage effect.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Waste gas low temperature combustion apparatus comprising a combustion chamber (1), characterized in that: The air inlet of the combustion box (1) is fixedly connected with a preheating box (2), the top exhaust port of the combustion box (1) is fixedly connected with a preheating conversion box (3), the middle part of the combustion box (1) is fixedly connected with a partition plate (6), the bottom of the partition plate (6) is fixedly connected with a plurality of electric heating net plates (7), the top of the combustion box (1) is inserted with a supporting plate (4), one side of the supporting plate (4) is fixedly connected with a catalyst storage box (5). The middle part of the preheating box (2) is fixedly connected with a perforated plate (8), the middle part of the perforated plate (8) is inserted with a rotating rod (9), the two ends of the rotating rod (9) are fixedly connected with a spiral blade (10) and a dispersion fan blade (11) respectively, and the middle part of the rotating rod (9) is fixedly connected with two limiting discs (12). The middle part of the preheating box (2) is fixedly connected with two third heat exchange pipes (21), the middle part of the preheating box (2) is fixedly connected with a heat conversion box (16), the upper and lower sides of the heat conversion box (16) are connected with a second heat exchange pipe (18) and a first heat exchange pipe (17) respectively, the middle part of the heat conversion box (16) is fixedly connected with a plurality of heat exchange vertical pipes (20), a plurality of through holes (19) are formed in the surface of the heat conversion box (16), and one side of the preheating conversion box (3) is fixedly connected with a liquid pump (15).

2. The exhaust gas low-temperature combustion apparatus according to claim 1, characterized by: One side of the preheating box (2) is fixedly connected with an air inlet pipe (13), and the top of the preheating conversion box (3) is fixedly connected with an exhaust pipe (14).

3. The exhaust gas low-temperature combustion apparatus according to claim 1, characterized by: The end of the rotating rod (9) close to the spiral blade (10) extends to the inside of the air inlet pipe (13), and one end of the spiral blade (10) is located in the middle part of the air inlet pipe (13).

4. The low-temperature waste gas combustion apparatus according to claim 1, characterized by: The dispersion fan blade (11) is located on the side of the perforated plate (8) away from the air inlet pipe (13), and the two limiting discs (12) are located on the two sides of the perforated plate (8).

5. The low-temperature waste gas combustion apparatus according to claim 1, characterized by: The third heat exchange pipes (21) are located on the side of the perforated plate (8) close to the combustion box (1), the middle parts of the two third heat exchange pipes (21) are connected, and the support rods (22) are fixedly connected around the third heat exchange pipes (21) in a symmetrical manner.

6. The low-temperature waste gas combustion apparatus according to claim 1, characterized by: One end of one of the third heat exchange pipes (21) is connected with one end of the first heat exchange pipe (17), and one end of the other third heat exchange pipe (21) is connected with the input end of the liquid pump (15).

7. The exhaust gas low-temperature combustion apparatus according to claim 1, characterized by: The output end of the liquid pump (15) is connected with the inner cavity of the second heat exchange pipe (18), and the middle parts of the second heat exchange pipe (18) and the first heat exchange pipe (17) are connected with the inner cavity of the heat conversion box (16).

8. The low-temperature waste gas combustion apparatus according to claim 1, characterized by: The through holes (19) correspond to the heat exchange vertical pipes (20) one by one, and the through holes (19) penetrate the middle parts of the heat exchange vertical pipes (20).

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