Waste gas treatment device

Abstract

The utility model relates to a waste gas treatment device, which comprises a reaction tower body and a catalytic reaction mechanism arranged in the reaction tower body, an accommodating cavity is formed in the reaction tower body, the catalytic reaction mechanism is arranged in the accommodating cavity, and the catalytic reaction mechanism comprises a first catalytic reaction mechanism and a second catalytic reaction mechanism, the first catalytic reaction mechanism is arranged in the middle of the accommodating cavity, and a first catalytic cavity is formed in the first catalytic reaction mechanism; the waste gas treatment device provided by the utility model is simple and practical in structure and good in waste gas treatment effect, and the production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to an exhaust gas treatment device for filtering desulfurization and denitration dust. Background Art

[0002] As we all know, in the current field of environmental protection technology, such as the technical field of industrial waste gas treatment, nitrogen oxides (NOx) are one of the atmospheric pollutants that seriously harm human health. It is also one of the main causes of acid rain and induced photochemical smog. In the current glass kiln flue gas treatment process, the desulfurization and denitrification process is mainly used to remove sulfur-containing and nitrate ion compounds. For the existing technology, after traditional desulfurization and denitrification, some nitrate ion compounds are still not completely treated, thus affecting the compliance of the treated gas. In the field of glass kiln flue gas treatment, although the desulfurization, denitrification and dust removal technologies are becoming more mature, the desulfurization and denitrification technologies are still not fully treated. The nitrate removal efficiency is generally not high. The main reason is that the capture rate of nitrogen oxides NOx and ammonia by the treatment equipment is not high. After the flue gas is collected and enters the treatment device, some NOx and ammonia escape from the uncovered part of the treatment system. Therefore, reducing the escape amount of untreated flue gas is a difficult problem that the industry needs to work hard to overcome. Therefore, the flue gas treated by the glass kiln can enter the subsequent waste gas treatment device for treating nitrate ion compounds after denitrification, dry desulfurization and bag dust removal processes. The flue gas is collected and enters the treatment device. In the first-level catalytic reaction at the front end, the nitrogen oxides in the flue gas are subjected to catalytic denitrification reaction, which improves the desulfurization, denitrification and dust removal efficiency and reduces the escape rate of the original flue gas. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a waste gas treatment device which can carry out catalytic denitrification reaction on nitrogen oxides in flue gas, improve the desulfurization, denitrification and dust removal efficiency, and reduce the escape rate of original flue gas.

[0004] In order to achieve the purpose of the utility model, the utility model provides an exhaust gas treatment device, including a reaction tower body and a catalytic reaction mechanism arranged in the reaction tower body, a receiving chamber is formed in the reaction tower body, the catalytic reaction mechanism is arranged in the receiving chamber, the catalytic reaction mechanism includes a first catalytic reaction mechanism, the first catalytic reaction mechanism is arranged in the middle of the receiving chamber, a first catalytic chamber is formed in the first catalytic reaction mechanism, the first catalytic chamber is used for front-end filtering of exhaust gas, the first catalytic chamber is connected to the receiving chamber, a first catalytic filter layer is provided in the first catalytic reaction chamber, and the first catalytic filter layer is used to improve the efficiency of exhaust gas treatment.

[0005] Preferably, the first catalytic reaction mechanism is provided with a first-level catalytic reaction cavity, the first catalytic cavity is formed in the first-level catalytic reaction cavity, a first exhaust port is provided at the bottom of the first catalytic cavity, and the first exhaust port is in communication with the accommodating cavity.

[0006] Preferably, a second catalytic chamber is formed between the outside of the first catalytic chamber and the accommodating chamber, the second catalytic chamber and the first catalytic chamber are in communication with each other through the first exhaust port, and the gas passing through the first catalytic chamber will enter the second catalytic chamber.

[0007] Preferably, a second filter layer is provided in the second catalytic cavity, and the second filter layer is arranged in the middle position of the second catalytic cavity, that is, the horizontal line of the second filter layer is lower than the horizontal line of the first catalytic filter layer, and the second filter layer is a wire mesh filter layer or a folded plate filter layer.

[0008] Preferably, the first catalytic filter layer is a cesium manganese catalyst material filter layer, the first catalytic filter layer comprises a filter mesh, a cesium manganese catalyst material layer is arranged on the filter mesh, and the first catalytic filter layer comprises a multi-layer filter layer mesh.

[0009] Preferably, a gas output mechanism is provided at the top of the reaction tower body, and the gas output mechanism includes a gas output long tube, the gas output long tube is communicated with the accommodating chamber, a top accommodating chamber is provided on the upper part of the accommodating chamber, and the gas output long tube is fixed on the top accommodating chamber.

[0010] Preferably, a gas delivery pipeline is provided in the middle of one side of the reaction tower body, a portion of the gas delivery pipeline protrudes from the reaction tower body, and another portion of the gas delivery pipeline extends into the accommodating cavity. A gas valve is provided on one end of the gas delivery pipeline, and the other end is connected to the first catalytic cavity.

[0011] Preferably, it also includes a detection mechanism, which includes a nitrogen oxide monitor, and the nitrogen oxide monitor is arranged on the gas output cylinder.

[0012] Preferably, a collecting hopper is provided at the bottom of the reaction tower body, and the collecting hopper is used to recover dust particles. A valve interface is provided on the collecting hopper, and the valve interface is connected to an external fan.

[0013] Preferably, the reaction tower body comprises an outer reaction tower body and an inner reaction tower body, the inner reaction tower body is placed inside the outer reaction tower body, a heat insulating cotton layer is provided between the inner reaction tower body and the outer reaction tower body, and the reaction tower body is a reaction tower body made of metal.

[0014] The beneficial effects of the utility model are as follows: the utility model provides an exhaust gas treatment device, a first catalytic reaction mechanism is arranged in a reaction tower body, a first catalytic chamber is formed in the first catalytic reaction mechanism, the first catalytic chamber is used for front-end filtering of exhaust gas, a first catalytic filter layer is arranged in the first catalytic reaction chamber, and the first catalytic filter layer can perform a catalytic denitrification reaction on nitrogen oxides in the flue gas, thereby improving the desulfurization, denitrification and dust removal efficiency and reducing the original flue gas escape rate. The exhaust gas treatment device provided by the utility model has a simple and practical structure, good exhaust gas treatment effect, and further reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other purposes, features and advantages of the present invention will become more apparent through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals in all the accompanying drawings indicate the same parts, and the drawings are not intentionally scaled to the actual size, but the focus is on illustrating the subject matter of the present invention.

[0016] Figure 1 It is a schematic plan view of the waste gas treatment device of the utility model;

[0017] Figure 2 This is a schematic diagram of the smoke gas conveying direction of an embodiment of the waste gas treatment device of the utility model.

[0018] In the figure: 1. reaction tower body; 11. reaction tower outer shell; 12. reaction tower inner body; 13. heat insulation cotton layer; 2. accommodating chamber; 21. top accommodating chamber; 3. first catalytic reaction mechanism; 30. first catalytic chamber; 31. first catalytic filter layer; 32. first exhaust port; 33. filter mesh; 4. second catalytic chamber; 41. second filter layer; 5. gas output mechanism; 51. gas output cylinder; 6. gas delivery pipeline; 7. detection mechanism; 8. collection hopper; 9. valve interface. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0020] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] like Figure 1-2 As shown, the embodiment of the utility model provides an exhaust gas treatment device, including a reaction tower body 1 and a catalytic reaction mechanism arranged in the reaction tower body, a receiving chamber 2 is formed in the reaction tower body 1, the catalytic reaction mechanism is arranged in the receiving chamber 2, the catalytic reaction mechanism includes a first catalytic reaction mechanism 3, the first catalytic reaction mechanism 3 is arranged in the middle of the receiving chamber, a first catalytic chamber 30 is formed in the first catalytic reaction mechanism 3, the first catalytic chamber 30 is used for filtering the exhaust gas at the front end, the first catalytic chamber 30 is connected with the receiving chamber, that is, the first catalytic reaction chamber, the first catalytic reaction chamber 30 is provided with a first catalytic filter layer 31, the first catalytic filter layer 31 is used to improve the efficiency of exhaust gas treatment, specifically The white smoke gas or gas with more pollutants generated in industrial production needs to be desulfurized, denitrated and dust-removed. The white smoke gas or the smoke gas that has undergone a series of treatment processes such as denitrification, dry desulfurization, bag dust removal, etc. enters the first catalytic chamber. A catalyst is arranged in the first catalytic chamber. The first catalytic filter layer 31 arranged in the catalytic chamber can treat the residual nitrogen oxides (NOx) and ammonia. For example, at a low temperature of 150°C, the residual NOx and ammonia can further undergo catalytic reaction, while reducing the content of nitrogen oxides (NOx) and ammonia, and controlling the content of nitrogen oxides (NOx) and ammonia within a safe range, thereby improving the efficiency of white smoke waste gas treatment.

[0023] refer to Figure 1-2 As shown, in a further preferred embodiment, the first catalytic reaction mechanism 3 is provided with a primary catalytic reaction chamber, which is equivalent to a small reaction container body arranged in the accommodating chamber, and can be fixedly connected to the central middle position of the reaction tower body by a bracket or a connecting plate. A first catalytic chamber 30 is formed in the primary catalytic reaction chamber. After the white smoke gas or waste gas to be further treated enters the first catalytic reaction chamber 30, a first exhaust port 32 is provided at the bottom of the first catalytic chamber 30, and the first exhaust port 32 is in communication with the accommodating chamber. The waste gas or white smoke gas catalytically reacted in the first catalytic chamber 30 is discharged from the bottom of the first catalytic chamber, and then enters the accommodating chamber for secondary treatment.

[0024] refer to Figure 1-2As shown, in a preferred embodiment, a second catalytic chamber 4 is formed between the outside of the first catalytic chamber 30 and the accommodating chamber. The second catalytic chamber 4 is also a secondary catalytic reaction chamber. The second catalytic chamber 4 and the first catalytic chamber are in communication through the first exhaust port 32. The gas passing through the first catalytic chamber 30 will enter the second catalytic chamber 4, and the flue gas after passing through the primary catalytic reaction chamber will enter the secondary catalytic chamber for further filtering treatment, so that the final desulfurization, denitrification and dust removal efficiency is high, and the original flue gas escape rate is reduced.

[0025] refer to Figure 1-2 As shown, in a preferred embodiment, a second filter layer 41 is provided in the second catalytic chamber 4, and the second filter layer 41 is arranged in the middle position of the second catalytic chamber 4, that is, the horizontal line of the second filter layer 41 is lower than the horizontal line of the first catalytic filter layer, and the second filter layer 41 is a wire mesh filter layer or a folded plate filter layer. Specifically, the second filter layer 41 can also be a filter layer containing activated carbon material, or other filter layers with good filtering and barrier properties.

[0026] refer to Figure 1-2 As shown, in a preferred embodiment, the first catalytic filter layer 31 is a cesium manganese catalyst material filter layer, and the first catalytic filter layer 31 includes a filter mesh 33, on which a cesium manganese catalyst material layer is provided. The cesium manganese catalyst material layer above contains a catalytic factor, which can further catalyze the reaction with sulfur-containing and nitrate ion compounds in the flue gas. The set cesium manganese catalyst material filter layer can further react with residual nitrogen oxides NOx and ammonia, while reducing the content of nitrogen oxides NOx and ammonia, and controlling the numerical content within a safe range. The first catalytic filter layer 31 includes a multi-layer filter layer mesh, and the filter layer thickness is thick, so the filtering effect is good.

[0027] refer to Figure 1-2 As shown, in a preferred embodiment, a gas output mechanism 5 is provided at the top of the reaction tower body 1, and the gas output mechanism 5 includes a gas output long cylinder 51, and the gas output long cylinder 51 is connected to the accommodating chamber, and a top accommodating chamber 21 is provided on the upper part of the accommodating chamber. The top accommodating chamber 21 is trapezoidal, and the trapezoidal top accommodating chamber is convenient for the internal smoke gas to flow toward the direction of the gas output long cylinder mouth. The gas output long cylinder is fixed on the top accommodating chamber, and the smoke gas entering the top accommodating chamber will be discharged from the gas output long cylinder.

[0028] refer to Figure 1-2As shown, in a further preferred embodiment, a gas delivery pipe 6 is provided in the middle of one side of the reaction tower body 1, and one end of the gas delivery pipe 6 can be connected to the front end processing device. The pipe can be set longer and adjusted according to the actual situation of the device to be connected. A part of the pipe body of the gas delivery pipe 6 protrudes from the reaction body, and the other part of the pipe body of the gas delivery pipe 6 extends into the accommodating cavity. A gas valve 61 is provided on one end of the gas delivery pipe 6. The setting of the gas valve 61 has high requirements on sealing performance and is used to open or close the gas delivery pipe to prevent gas overflow. The other end is connected to the first catalytic chamber, and the flue gas treated by the upper-level processing device enters from the gas delivery pipe and is then input into the first-level catalytic reaction chamber.

[0029] refer to Figure 1-2 As shown, in a further preferred embodiment, it also includes a detection mechanism 7, which includes a nitrogen oxide monitor. The nitrogen oxide monitor is arranged on the gas output cylinder, and can be arranged inside the gas output cylinder. The detection result is displayed on the gas output cylinder. The set nitrogen oxide monitor can detect the terminal content of nitrogen oxides (NOx) and NH3, and regulate the amount of front-end addition. The amount of NH3 sprayed can be adjusted in real time until the terminal detection value is reduced to a safe range. It is safe and reliable to use.

[0030] refer to Figure 1-2 As shown, in a further preferred embodiment, a collecting hopper 8 is provided at the bottom of the reaction tower body, and the collecting hopper 8 is used to recover dust particles. A valve interface 9 is provided on the collecting hopper 8, and the valve interface 9 is connected to an external fan. The collecting hopper 8 is set to recover fine dust particles in the secondary catalytic reaction chamber, and the valve interface 9 is connected to a fan for suction, so as to suck the dust particles in the flue gas passing through the secondary catalytic reaction chamber and fall back onto the collecting hopper. Preferably, an adsorption layer for adsorption, such as an activated carbon cotton adsorption material layer, can also be provided on the surface of the collecting hopper.

[0031] refer to Figure 1-2As shown, in another preferred embodiment, the reaction tower body 1 can be configured as a reaction tower body composed of two tower bodies including a reaction tower outer shell 11 and a reaction tower inner body 12. The two-layer body can enhance the durability of the entire reaction tower body, and the overall structural strength is good. The reaction tower inner body is placed in the reaction tower outer shell, and a heat insulating cotton layer 13 is arranged between the reaction tower inner body and the reaction tower outer shell. Because the temperature of the gas passing through the reaction tower inner body 12 is generally relatively high, the lowest temperature is 150 degrees and the highest reaches 280 degrees. Therefore, the heat insulating cotton layer 13 is arranged to prevent high temperature heat from being conducted to the reaction tower outer shell, thereby avoiding safety hazards to the staff. The reaction tower body is a reaction tower body made of metal material, and the reaction tower outer shell 11 and the reaction tower inner body 12 can both be metal bodies, which can be made of stainless steel, carbon steel, fiberglass, or PPH.

[0032] The beneficial effects of the utility model are as follows: the utility model provides an exhaust gas treatment device, in which a first catalytic reaction mechanism is arranged in a reaction tower body, a first catalytic chamber is formed in the first catalytic reaction mechanism, the first catalytic chamber is used for front-end filtering of exhaust gas, and a first catalytic filter layer is arranged in the first catalytic reaction chamber. The first catalytic filter layer can perform a catalytic denitrification reaction on nitrogen oxides in the flue gas, thereby improving the desulfurization, denitrification and dust removal efficiency and reducing the original flue gas escape rate. The exhaust gas treatment device provided by the utility model has a simple and practical structure, good exhaust gas treatment effect, and further reduces production costs.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0035] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An exhaust gas treatment device, characterized in that: It includes a reaction tower body and a catalytic reaction mechanism arranged in the reaction tower body, a receiving chamber is formed in the reaction tower body, the catalytic reaction mechanism is arranged in the receiving chamber, the catalytic reaction mechanism includes a first catalytic reaction mechanism, the first catalytic reaction mechanism is arranged in the middle of the receiving chamber, a first catalytic chamber is formed in the first catalytic reaction mechanism, the first catalytic chamber is used for front-end filtering of exhaust gas, the first catalytic chamber is connected with the receiving chamber, a first catalytic filter layer is provided in the first catalytic chamber, and the first catalytic filter layer is used to improve the efficiency of exhaust gas treatment.

2. The exhaust gas treatment device according to claim 1, characterized in that: The first catalytic reaction mechanism is provided with a primary catalytic reaction cavity, the first catalytic cavity is formed in the primary catalytic reaction cavity, a first exhaust port is provided at the bottom of the first catalytic cavity, and the first exhaust port is in communication with the accommodating cavity.

3. The exhaust gas treatment device according to claim 2, characterized in that: A second catalytic chamber is formed between the outside of the first catalytic chamber and the accommodating chamber. The second catalytic chamber communicates with the first catalytic chamber through the first exhaust port, and the gas passing through the first catalytic chamber enters the second catalytic chamber.

4. The exhaust gas treatment device according to claim 3, characterized in that: A second filter layer is provided in the second catalytic cavity. The second filter layer is arranged in the middle of the second catalytic cavity, that is, the horizontal line of the second filter layer is lower than the horizontal line of the first catalytic filter layer. The second filter layer is a wire mesh filter layer or a folded plate filter layer.

5. The exhaust gas treatment device according to claim 1, characterized in that: The first catalytic filter layer is a cesium manganese catalyst material filter layer, the first catalytic filter layer includes a filter mesh, a cesium manganese catalyst material layer is provided on the filter mesh, and the first catalytic filter layer includes multiple layers of filter layer mesh.

6. The exhaust gas treatment device according to claim 1, characterized in that: A gas output mechanism is provided on the top of the reaction tower body. The gas output mechanism includes a gas output long tube. The gas output long tube is communicated with the accommodating chamber. A top accommodating chamber is provided on the upper part of the accommodating chamber. The gas output long tube is fixed on the top accommodating chamber.

7. The exhaust gas treatment device according to claim 1, characterized in that: A gas delivery pipeline is provided in the middle of one side of the reaction tower body, a part of the gas delivery pipeline protrudes from the reaction tower body, and another part of the gas delivery pipeline extends into the accommodating cavity. A gas valve is provided on one end of the gas delivery pipeline, and the other end is connected to the first catalytic cavity.

8. The exhaust gas treatment device according to claim 1, characterized in that: It also includes a detection mechanism, which includes a nitrogen oxide monitor, and the nitrogen oxide monitor is arranged on the gas output cylinder.

9. The exhaust gas treatment device according to claim 1, characterized in that: A collecting hopper is provided at the bottom of the reaction tower body, and the collecting hopper is used to recover dust particles. A valve interface is provided on the collecting hopper, and the valve interface is connected to an external fan.

10. The exhaust gas treatment device according to claim 1, characterized in that: The reaction tower body comprises an outer reaction tower body and an inner reaction tower body. The inner reaction tower body is placed inside the outer reaction tower body. A heat insulating cotton layer is arranged between the inner reaction tower body and the outer reaction tower body. The reaction tower body is made of metal.

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