Flow guide structure of desulfurization and denitrification flue gas flow field

Abstract

The utility model provides a flow guide structure of a desulfurization and denitrification flue gas flow field, and aims to solve the technical problem that a desulfurization and denitrification flue in the prior art cannot stably run for a long time. The flow guide structure comprises a flue, one end of the flue is provided with a flue gas inlet, and an included angle is formed between the top face of the flue and the end of the flue gas inlet end; the flow guide plate is arranged in the flue, one end of the flow guide plate is fixedly arranged on the flue gas inlet, the other end of the flow guide plate is arranged in the extending direction of the flue, and an included angle smaller than 90 degrees is formed between the length direction of the flow guide plate and the end portion of the flue gas inlet end; a plurality of guide plates are arranged in the flue and are arranged at intervals from the top of the flue to the bottom of the flue. Flue gas passing through the flow guide plate is subjected to flow guide adjustment, a gas flow field is changed, a stable gas flow field is formed in the flue, vortexes are prevented from occurring in the flue, the inner wall of the single side of the flue is prevented from being scoured, and it is ensured that the flue gas entering the desulfurization and denitrification system is in a stable state.

Description

TECHNICAL FIELD

[0001] The utility model relates to smelting waste gas treatment technical field, concretely relates to a kind of flow guide structure of desulfurization and denitrification flue gas flow field. BACKGROUND

[0002] The waste gas generated in the production and smelting process of industrial silicon includes SO2 and NOx, the waste gas is sucked into the desulfurization and denitrification system by the fan, and the SO2 and NOx in the flue gas are removed and separated in the desulfurization and denitrification system.

[0003] In the industrial silicon smelting process, the fluctuation of the front-end industrial silicon furnace condition causes the fluctuation of the flue gas, resulting in unstable flue gas flow into the desulfurization and denitrification system and vortex.

[0004] In the existing desulfurization and denitrification system, the thickness of the flue is usually increased to cope with the vortex erosion of one side of the flue, and the service life of the flue is improved. UTILITY MODEL CONTENTS

[0005] In view of the technical problem that the desulfurization and denitrification flue in the prior art cannot be operated stably for a long time, the utility model provides a flow guide structure of desulfurization and denitrification flue gas flow field, which has the advantage of long-term stable operation.

[0006] The technical scheme of the utility model is:

[0007] A flow guide structure of desulfurization and denitrification flue gas flow field comprises:

[0008] A flue has a flue gas inlet at one end, and an angle exists between the top surface of the flue and the end of the flue gas inlet end;

[0009] A flow guide plate is arranged in the flue, one end of which is fixed to the flue gas inlet, and the other end of the flow guide plate is arranged along the extension direction of the flue.

[0010] A plurality of flow guide plates are arranged in the flue, and all the flow guide plates are arranged at intervals from the top to the bottom of the flue.

[0011] Optionally, a spacing exists between the flow guide plate at the top and the top of the flue.

[0012] The guide plates at the bottom have a spacing between the guide plates and the bottom of the flue.

[0013] Optionally, the included angles between the guide plates and the end of the flue gas inlet end are equal.

[0014] Optionally, the included angle between the guide plate and the end of the flue gas inlet end is 55-60 degrees.

[0015] Optionally, the lengths of all the guide plates gradually decrease from the side close to the top of the flue to the side close to the bottom of the flue.

[0016] Optionally, the included angle between the top surface of the flue and the end of the flue gas inlet end is smaller than the included angle between the guide plate and the end of the flue gas inlet end.

[0017] Optionally, the area of the flue gas inlet accounts for less than 100% of the end of the flue.

[0018] Optionally, the utility model further comprises:

[0019] A support rod is fixedly arranged at one end of the top of the flue and connected with all the guide plates.

[0020] Optionally, a plurality of support rods are arranged in parallel in the flue.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] In the technical scheme, the guide plates are arranged in the flue gas inlet of the flue, the flue gas passing through the guide plates is gradually and layer by layer guided and adjusted, the gas flow field in the flue is changed, a stable gas flow field is formed in the flue, so that vortex flow in the flue is avoided, the single-side inner wall of the flue is not eroded, the flue gas entering the desulfurization and denitrification system is in a stable state, and the desulfurization and denitrification reaction is more stable and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a structural schematic view of the utility model. DETAILED DESCRIPTION

[0025] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature and not limiting.

[0026] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described in the following. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0027] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] Embodiment:

[0029] Referring to Figure 1 A flow guide structure of a desulfurization and denitrification flue gas flow field, comprising a flue 1 and a flow guide plate 2, wherein one end of the flue 1 is a flue gas inlet 3, and the end of the flue gas inlet 3 of the flue 1 is arranged in the vertical direction, and the end face of this end of the flue 1 is a vertical plane.

[0030] There is an included angle between the top surface of the inside of the flue 1 and the end of the flue gas inlet 3 end, which is less than 90°.

[0031] A flow guide plate 2 is arranged in the flue 1, one end of the flow guide plate 2 is fixedly arranged on the mouth of the flue gas inlet 3, the other end of the flow guide plate 2 is arranged along the extension direction of the flue 1, and the two sides of the flow guide plate 2 are respectively fixedly arranged on the inner wall of the flue 1.

[0032] Among them, the length direction of the flow guide plate 2 and the end of the flue gas inlet 3 end of the flue 1 exist an included angle less than 90 degrees. In addition, a plurality of flow guide plates 2 are installed in the flue 1, the length directions of all flow guide plates 2 are the same, so that the included angles between all flow guide plates 2 and the end of the flue gas inlet 3 end are equal, and one end of all flow guide plates 2 is installed in the end of the flue 1 for the flue gas inlet 3 end, and there is a spacing between the two adjacent flow guide plates 2.

[0033] In this embodiment, the guide plates 2 are arranged in the flue gas inlet 3 of the flue 1, and the flue gas passing through the guide plates 2 is gradually and layer by layer guided and adjusted, the gas flow field in the flue 1 is changed, a stable gas flow field is formed in the flue 1, so that vortex in the flue 1 is avoided, the single-side inner wall of the flue 1 is not eroded, and the flue gas entering the desulfurization and denitrification system is in a stable state, and the desulfurization and denitrification reaction is more stable and efficient.

[0034] Preferably, there is a spacing between the uppermost guide plate 2 and the top of the flue 1, and there is a spacing between the lowermost guide plate 2 and the bottom of the flue 1. At the same time, the spacing between all the guide plates 2 is equal, and is also equal to the spacing between the guide plate and the top of the flue 1 and the spacing between the guide plate and the bottom of the flue 1.

[0035] By uniformly installing the guide plates 2 in the flue 1, the gas flow in the flue 1 can be uniformly guided, so that the amount of flue gas passing between two guide plates 2 is equal, thereby avoiding different air pressures caused by different amounts of flue gas, and avoiding vibration of the guide plates 2.

[0036] Preferably, the included angle between the end of the guide plate 2 and the end of the flue gas inlet 3 is 55°-60°, and generally, the included angle between the end of the guide plate 2 and the end of the flue gas inlet 3 is 60°. The included angle between the top surface of the flue 1 and the end of the flue gas inlet 3 is greater than the included angle between the end of the guide plate 2 and the end of the flue gas inlet 3.

[0037] In one specific embodiment:

[0038] The length of all the guide plates 2 decreases from the guide plate close to the top of the flue 1 to the guide plate close to the bottom of the flue 1, that is, the length of the guide plate close to the top of the flue 1 is the longest, and the length of the guide plate close to the bottom of the flue 1 is the shortest. This design is mainly aimed at the flow field in the flue 1.

[0039] In another specific embodiment:

[0040] The area of the flue gas inlet 3 accounts for less than 100% of the end of the flue 1. Generally, it accounts for about 60%, mainly to avoid the end of the lowermost guide plate 2 away from the flue gas inlet 3 from contacting the bottom of the flue 1, causing a sealed space, and also to provide installation space for the reinforcing structure in the flue 1.

[0041] In another specific embodiment:

[0042] The guide structure also includes a plurality of support rods 4, all the support rods 4 are arranged in parallel in the flue 1, one end of the support rod 4 is fixedly arranged at the top of the flue 1, the other end of the support rod 4 extends in a direction almost perpendicular to the guide plate 2, and this end of the support rod 4 is connected with all the guide plates 2.

[0043] In this embodiment, the support rod 4 is designed, on one hand, to facilitate the installation of the guide plate 2, and on the other hand, to avoid the vibration of the guide plate 2 under the action of the airflow.

[0044] The above-described embodiments only express the specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A flow guide structure for a desulfurized and denitrified flue gas flow field, characterized by, Comprising: a flue having a flue gas inlet at one end, an included angle between the top surface of the flue and the end of the flue gas inlet end; a guide plate provided in the flue, one end of which is fixedly provided on the flue gas inlet, the other end of which is arranged along the extension direction of the flue, and the included angle between the length direction of the guide plate and the end of the flue gas inlet end is less than 90 degrees; a plurality of guide plates are provided in the flue, and all the guide plates are arranged at intervals from the top to the bottom of the flue.

2. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 1, wherein there is a spacing between the top guide plate and the top of the flue; there is a spacing between the bottom guide plate and the bottom of the flue.

3. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 2, wherein the included angles between all the guide plates and the end of the flue gas inlet end are equal.

4. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 3, wherein the included angle between the guide plate and the end of the flue gas inlet end is 55°-60°.

5. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 4, wherein the lengths of all the guide plates decrease from the one close to the top of the flue to the one close to the bottom of the flue.

6. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 5, wherein the included angle between the top surface of the flue and the end of the flue gas inlet end is less than the included angle between the guide plate and the end of the flue gas inlet end.

7. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 6, wherein the area ratio of the flue gas inlet to the end of the flue is less than 100%.

8. The flow guide structure of flue gas flow field for desulfurization and denitrification according to claim 7, characterized in that, Further comprising: a support rod, one end of which is fixedly provided on the top of the flue and connected with all the guide plates.

9. The guide structure of the flue gas flow field of the desulfurization and denitrification according to claim 7, wherein a plurality of support rods are provided in the flue in parallel with each other.

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