A waste gas catalytic combustion device

Abstract

The utility model relates to a waste gas catalytic combustion device, including a combustion chamber, in which a heater and a catalytic filler plate are installed; it also includes a pretreatment chamber and a preheating chamber from bottom to top, a waste gas intake pipe is arranged on one side of the bottom of the pretreatment chamber, a desulfurization and denitrification filler layer is installed near the top of the pretreatment chamber, the pretreatment chamber is connected to the bottom of the preheating chamber above through an exhaust pipe and a first air pump; the air intake pipe is connected to the preheating chamber after passing through a second air pump and a preheater, and the top right side of the combustion chamber is connected to the combustion chamber on the right side through a combustion ventilation pipe. The waste gas of the utility model is mixed with the heated air in the preheating chamber and preheated, and then flows to the combustion chamber on the right side through a channel composed of a plurality of partitions, so that the preheating of the waste gas is relatively complete, and the combustion catalytic effect in the combustion chamber at a later stage is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to waste gas treatment, and in particular to waste gas catalytic combustion equipment. Background Art

[0002] Catalytic combustion device refers to a device or equipment that burns under the action of a catalyst. The working principle of the catalytic combustion device is: with the help of a catalyst, the organic waste gas is flamelessly burned at a lower ignition temperature, and the organic waste gas is decomposed into non-toxic carbon dioxide and water vapor.

[0003] After massive searches, it was found that the prior art publication number is CN214094537U, which discloses a catalytic combustion industrial waste gas treatment equipment; it can fully mix the waste gas and air, improve the reaction rate of the two on the catalytic combustion bed, and the waste gas treatment effect is better; it includes a catalytic burner body, a catalytic combustion chamber is arranged in the catalytic burner body, a catalytic combustion bed is arranged in the catalytic combustion chamber, an exhaust gas inlet pipe and an air inlet pipe connected to the catalytic combustion chamber are arranged on the upper part of the catalytic burner body, and an exhaust pipe connected to the catalytic burner body is arranged on the lower part of the catalytic burner body; it also includes a rotating mechanical sealing connector, a straight pipe, an air distribution pipe rack and a wind wheel, the catalytic burner body is cylindrical, a mounting plate is arranged at the bottom of the catalytic combustion chamber, a connecting hole penetrating from top to bottom is arranged in the middle of the mounting plate, the catalytic combustion bed is fixedly installed on the mounting plate, the catalytic combustion bed is cylindrical, and a plurality of groups of evenly distributed air distribution pipes are arranged on the air distribution pipe rack.

[0004] In summary, in the process of treating exhaust gas, the existing catalytic combustion equipment has a relatively simple channel structure for the combustion gas to flow through, which makes the gas flow faster, resulting in incomplete exhaust gas preheating and catalytic treatment, and resulting in a relatively general combustion catalytic effect.

[0005] In view of the above-mentioned defects, the designer actively carried out research and innovation in order to create a waste gas catalytic combustion equipment to make it more valuable for industrial use. Utility Model Content

[0006] In order to solve any of the above technical problems, the purpose of the utility model is to provide an exhaust gas catalytic combustion device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An exhaust gas catalytic combustion device comprises a combustion chamber in which a heater and a catalytic filler plate are installed;

[0009] It also includes a pretreatment chamber and a preheating chamber from bottom to top, an exhaust gas intake pipe is arranged on one side of the bottom of the pretreatment chamber, a desulfurization and denitrification packing layer is installed near the top of the pretreatment chamber, and the pretreatment chamber is connected to the bottom of the preheating chamber above through an exhaust pipe and a first air pump;

[0010] A number of staggered partitions are installed in the preheating chamber along the vertical direction, and a preheater is installed on the outside of the preheating chamber near the bottom left side. The air intake duct is connected to the preheating chamber after passing through the second air pump and the preheater, and the top right side of the combustion chamber is connected to the combustion chamber on the right through a combustion ventilation duct.

[0011] As a further improvement of the utility model, an air storage chamber is arranged at the lower right side of the combustion chamber. The bottom right side of the combustion chamber is connected to the air storage chamber below through an air storage pipe and a third air pump, and one side of the bottom of the air storage chamber is connected to the outside through an exhaust pipe and a fourth air pump.

[0012] As a further improvement of the utility model, a liquid inlet pipe is installed in the pretreatment chamber just above the desulfurization and denitrification packing layer, a plurality of liquid outlet nozzles are evenly distributed at the bottom of the liquid inlet pipe, and a liquid pump connected to an external liquid source is installed at one end of the liquid inlet pipe located outside the pretreatment chamber.

[0013] As a further improvement of the utility model, a dryer is installed on the air extraction pipeline.

[0014] As a further improvement of the utility model, a filter is installed on the air intake duct, and the filter is an activated carbon filter.

[0015] As a further improvement of the utility model, the catalytic filler is filled on the catalytic filler plate, and air holes are opened between adjacent catalytic fillers.

[0016] As a further improvement of the present invention, both the preheater and the heater are resistance heaters.

[0017] By means of the above scheme, the utility model has at least the following advantages:

[0018] The exhaust gas of the utility model is mixed with the heated air in the preheating chamber and preheated, and then flows to the combustion chamber on the right through a channel composed of multiple partitions, so that the exhaust gas is preheated more completely and the combustion catalytic effect in the combustion chamber at a later stage is improved.

[0019] The waste gas of the utility model is firstly subjected to desulfurization and denitrification treatment in a pretreatment chamber, then enters a preheating chamber for preheating, then undergoes catalytic combustion treatment in a combustion chamber, and finally is stored in a gas storage chamber for unified discharge, with good comprehensive treatment performance.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an exhaust gas catalytic combustion device of the utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of the structure of the catalytic filler plate.

[0024] The meanings of the various reference numerals in the figures are as follows.

[0025] Pretreatment chamber 1, preheating chamber 2, combustion chamber 3, air storage chamber 4, exhaust gas inlet pipe 5, desulfurization and denitrification packing layer 6, liquid inlet pipe 7, liquid pump 8, liquid outlet nozzle 9, exhaust pipe 10, dryer 11, first air pump 12, air inlet pipe 13, second air pump 14, filter 15, preheater 16, partition 17, combustion ventilation pipe 18, heater 19, catalytic packing plate 20, air storage pipe 21, third air pump 22, exhaust pipe 23, fourth air pump 24, catalytic packing 25, air hole 26. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0028] Example

[0029] like Figure 1-2 As shown,

[0030] An exhaust gas catalytic combustion device comprises a pretreatment chamber 1, a preheating chamber 2, a combustion chamber 3 and a gas storage chamber 4 in sequence.

[0031] 1. From bottom to top, it includes a pretreatment chamber 1 and a preheating chamber 2. An exhaust gas intake pipe 5 is arranged on one side of the bottom of the pretreatment chamber 1. A desulfurization and denitrification packing layer 6 is installed near the top of the pretreatment chamber 1. The pretreatment chamber 1 is connected to the bottom of the preheating chamber 2 above through an exhaust pipe 10 and a first air pump 12. A dryer 11 is installed on the exhaust pipe 10.

[0032] A liquid inlet pipe 7 is installed in the pretreatment chamber 1 directly above the desulfurization and denitrification packing layer 6, and a plurality of liquid outlet nozzles 9 are evenly distributed at the bottom of the liquid inlet pipe 7. A liquid pump 8 connected to an external liquid source is installed at one end of the liquid inlet pipe 7 located outside the pretreatment chamber 1.

[0033] 2. Several staggered partitions 17 are installed in the preheating chamber 2 along the vertical direction. A preheater 16 is installed outside the preheating chamber 2 near the bottom left side. The air intake pipe 13 is connected to the preheating chamber 2 after passing through the second air pump 14 and the preheater 16. A filter 15 is installed on the air intake pipe 13. The filter 15 is an activated carbon filter. The top right side of the combustion chamber 3 is connected to the combustion chamber 3 on the right side through the combustion ventilation pipe 18.

[0034] 3. An air storage chamber 4 is provided at the lower right side of the combustion chamber 3. The right bottom of the combustion chamber 3 is connected to the air storage chamber 4 below through the air storage pipe 21 and the third air pump 22. The bottom side of the air storage chamber 4 is connected to the outside through the exhaust pipe 23 and the fourth air pump 24.

[0035] 4. A heater 19 and a catalytic filler plate 20 are installed in the combustion chamber 3 . The catalytic filler plate 20 is filled with catalytic fillers 25 . Air holes 26 are opened between adjacent catalytic fillers 25 .

[0036] In addition, the above-mentioned preheater 16 and heater 19 are both resistance heaters.

[0037] The working principle of this utility model is briefly described as follows:

[0038] The waste gas initially enters the pretreatment chamber 1 through the waste gas inlet pipe 5. At this time, the external liquid source is sprayed onto the desulfurization and denitrification packing layer 6 below through the liquid pump 8 and the liquid inlet pipe 7 through a plurality of liquid outlet nozzles 9, so that the waste gas contacts the desulfurization and denitrification packing layer 6 and performs gas-liquid exchange to remove ammonia and sulfide in the waste gas; then the gas is dried through the exhaust pipe 10, the dryer 11 and the first air pump 12 and discharged into the preheating chamber 2 above. The external air is filtered through the filter 15 and then heated by the preheater 16 before entering the preheating chamber 2 to mix with the waste gas and preheat the waste gas. The waste gas flows in the channel composed of multiple partitions 17 and is finally discharged to the combustion chamber 3 on the right through the combustion ventilation pipe 18 for catalytic combustion treatment. The waste gas after catalytic combustion treatment can be stored in the gas storage chamber 4 below through the gas storage pipe 21 and the third air pump 22, and is regularly discharged through the exhaust pipe 23 and the fourth air pump 24.

[0039] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An exhaust gas catalytic combustion device, comprising a combustion chamber (3), wherein a heater (19) and a catalytic filler plate (20) are installed in the combustion chamber (3); Features: The invention also comprises, from bottom to top, a pretreatment chamber (1) and a preheating chamber (2); a waste gas intake pipe (5) is arranged on one side of the bottom of the pretreatment chamber (1); a desulfurization and denitrification packing layer (6) is installed near the top of the pretreatment chamber (1); the pretreatment chamber (1) is connected to the bottom of the preheating chamber (2) above via an exhaust pipe (10) and a first air pump (12); A plurality of partitions (17) are installed in a vertical direction and are staggered in distribution. A preheater (16) is installed outside the preheating chamber (2) near the bottom left side. An air intake pipe (13) is connected to the preheating chamber (2) after passing through a second air pump (14) and the preheater (16). The right side of the top of the combustion chamber (3) is connected to the combustion chamber (3) on the right side through a combustion ventilation pipe (18).

2. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: An air storage chamber (4) is arranged below the right side of the combustion chamber (3); the bottom right side of the combustion chamber (3) is connected to the air storage chamber (4) below via an air storage pipe (21) and a third air pump (22); and one side of the bottom of the air storage chamber (4) is connected to the outside via an exhaust pipe (23) and a fourth air pump (24).

3. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: A liquid inlet pipe (7) is installed in the pretreatment chamber (1) directly above the desulfurization and denitrification packing layer (6), a plurality of liquid outlet nozzles (9) are evenly distributed at the bottom of the liquid inlet pipe (7), and a liquid pump (8) connected to an external liquid source is installed at one end of the liquid inlet pipe (7) located outside the pretreatment chamber (1).

4. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: A dryer (11) is installed on the air extraction pipeline (10).

5. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: A filter (15) is installed on the air intake pipe (13), and the filter (15) is an activated carbon filter.

6. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: The catalytic filler plate (20) is filled with catalytic fillers (25), and air holes (26) are opened between adjacent catalytic fillers (25).

7. The exhaust gas catalytic combustion equipment according to claim 1, characterized in that: The preheater (16) and the heater (19) are both resistance heaters.

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