Denitrification absorption tower structure

Abstract

The present invention relates to a denitration absorption tower structure, comprising a tower body and a filtering mechanism located inside the tower body, wherein the filtering mechanism comprises a substrate and a plurality of denitration units; the substrate is a cylindrical shell structure arranged parallel to the inner wall of the tower body, the top surface of the substrate is an open structure, the bottom surface of the substrate is a closed structure, a gap is arranged between the outer side wall of the substrate and the inner wall of the tower body, and a plurality of through holes are arranged on the side surface of the substrate; the denitration unit is located inside the substrate, a cavity is arranged inside the denitration unit, an opening communicating with the cavity is arranged on one side of the denitration unit, and the opening matches the shape of the through hole of the substrate and is connected to each other in a one-to-one correspondence; the present invention has a reasonable structural design, and by adopting a matching mode of the substrate and the denitration unit, the exhaust gas can be uniformly passed through each denitration unit for adsorption and denitration, thereby ensuring the same service life of the denitration units and improving the utilization rate of the catalyst.

Description

Technical Field

[0001] The invention relates to the field of waste gas treatment equipment, and in particular to a denitration absorption tower structure. Background Art

[0002] In the prior art, the installation method of the catalyst inside the denitration absorption tower is generally based on a plate filter structure located in the exhaust gas flow interface, so that when the exhaust gas passes through the plate filter, it contacts the catalyst to achieve the purpose of denitration. However, the plate filter of this structure has a limited area, and a multi-layer panel must be set. The exhaust gas needs to pass through these plate filters layer by layer. The plate filter located on the front side contacts with high-concentration exhaust gas and has a short service life. The plate filter located on the rear side contacts with low-concentration exhaust gas and has a relatively long service life. This causes problems for the maintenance of the denitration absorption tower. Different plate filters need to be replaced at different times, and the replacement process is relatively troublesome. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a denitration absorption tower structure, which increases the contact area between the filter and the exhaust gas, ensures a consistent service life of the filter, and facilitates maintenance.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A denitration absorption tower structure, comprising a tower body, characterized in that it also comprises a filtering mechanism located inside the tower body, wherein the filtering mechanism comprises a substrate and a plurality of denitration units;

[0006] The base is a cylindrical shell structure arranged parallel to the inner wall of the tower body, the top surface of the base is an open structure, and the edge of the top surface is connected and fixed to the inner wall of the tower body, the bottom surface of the base is a closed structure, a gap is provided between the outer side wall of the base and the inner wall of the tower body, and a plurality of through holes are provided on the side surface of the base;

[0007] The denitrification unit is located inside the substrate, and a cavity is provided inside the denitrification unit. An opening connected to the cavity is provided on one side of the denitrification unit, and the opening matches the shape of the through hole of the substrate and is connected to each other one by one. The side wall of the denitrification unit is provided with an interlayer and a plurality of catalyst particles are filled in the interlayer. The inner and outer side walls of the denitrification unit respectively adopt a perforated plate structure.

[0008] A fixing plate connected to the through hole is provided on the inner wall of the substrate at the edge of the through hole, the fixing plate is an annular structure, and the fixing plate is connected to the denitration unit.

[0009] The fixing plate is inserted into the opening of the denitration unit and is threadedly connected to the inner wall of the opening.

[0010] The internal cross-sectional dimensions of the middle portion of the denitration unit gradually increase from the opening position to the inside thereof.

[0011] The bottom surface of the base is a conical structure arranged downward.

[0012] At least one group of diverter plates is also provided inside the gap. The diverter plates are annular panels arranged parallel to the outer wall of the base. The diverter plates are located in the gap and are evenly distributed from the inside to the outside. The bottom end of the diverter plate is set at the same height as the ground edge of the base, and the top end of the diverter plate is located at gradually increasing heights from the inside to the outside.

[0013] The inner wall of the diverter plate is connected and fixed respectively through the diverter plate or the base inside it.

[0014] The edge of the top surface of the base body is provided with a flange plate connected thereto, and the outer edge of the flange plate is in contact with the inner wall of the tower body and is tightly connected to each other.

[0015] An inlet for loading and unloading catalyst particles is provided on the outer side wall of the denitration unit, and the inlet is sealed by a sealing plug connected thereto.

[0016] The beneficial effects of the present invention are:

[0017] The structural design is reasonable. By adopting the coordination mode of the substrate and the denitrification unit, the exhaust gas can be evenly passed through each denitrification unit for adsorption and denitrification, ensuring the same service life of the denitrification unit and improving the utilization rate of the catalyst.

[0018] A single denitrification unit is lightweight and easy to install. Maintenance of the denitrification unit can be performed manually by entering the tower body, thus reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the filtering mechanism and the diverter plate.

[0023] Figure 4 It is a structural diagram of the filtering mechanism.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the filtering mechanism.

[0025] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of "AA".

[0026] Figure 7 Schematic diagram of the structure of the denitrification unit.

[0027] In the figure: 100 tower body, 200 filtering mechanism, 201 base, 202 flange plate, 203 bottom surface, 204 through hole, 205 fixing plate, 300 diverter plate, 301 connecting plate, 400 denitration unit, 401 side wall, 402 catalyst particles, 403 cavity, 404 opening, 405 feed port. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] according to Figures 1 to 7 As shown: This embodiment provides a denitrification absorption tower structure, including a tower body 100 of the denitrification absorption tower, and a group of filtering mechanisms 200 located inside the tower body 100. The filtering mechanism 200 is connected to the inner wall of the tower body 100, so that the interior of the tower body 100 is divided into two parts located on both sides of the filtering mechanism 200. When the exhaust gas enters the air inlet of the tower body 100, it needs to pass through the filtering mechanism 200 before leaving the air outlet of the tower body 100. In this process, the filtering mechanism 200 adsorbs and denitrates the exhaust gas to achieve the purpose of exhaust gas treatment.

[0030] The filtering mechanism 200 includes a substrate 201 and a plurality of denitrification units 400;

[0031] The base 201 is a cylindrical shell structure arranged parallel to the inner wall of the tower body 100, and the horizontal cross-sectional diameter of the base 201 is smaller than the inner diameter of the tower body 100, so that a gap is provided between the outer side wall 401 of the base 201 and the inner wall of the tower body 100, and the gap is used for the exhaust gas to flow;

[0032] Furthermore, two groups of splitter plates 300 are provided inside the gap, and the splitter plates 300 are annular panels arranged parallel to the outer wall of the base 201, wherein one group of splitter plates 300 is located inside the other group of splitter plates 300, and the two are connected and fixed to each other through a connecting plate 301, and the guide plate located on the inner side and the base 201 are also connected and fixed to each other through a connecting plate 301, and the connecting plates 301 are vertically distributed to reduce wind resistance, and the two groups of splitter plates 300 are located in the gap and are evenly distributed from the inside to the outside, and the bottom end of the splitter plate 300 is set at the same height as the ground edge of the base 201, and the top end of the splitter plate 300 located on the inner side is lower than the top end of the splitter plate 300 located on the outer side;

[0033] When the waste gas enters the gap, the waste gas in the gap between the inner wall of the tower body 100 and the outer diverter plate 300 is transported to the upper part of the outer wall of the substrate 201, and the waste gas in the gap between the inner guide plate and the substrate 201 is transported to the lower part of the outer wall of the substrate 201. The diverter plate 300 divides the waste gas into channels and flows to designated areas to ensure that the waste gas can flow evenly through the surface of the substrate 201, thereby ensuring the waste gas treatment capacity and service life of each group of denitration units 400;

[0034] The top surface of the base 201 is an open structure, and a flange plate 202 connected to the top edge of the base 201 is provided, and the cross section of the flange plate 202 is an L-shaped structure. The lower part of the flange plate 202 is horizontally distributed and connected and fixed to the base 201, and the upper part of the flange plate 202 is vertically distributed and in contact with the inner wall of the tower body 100, and is connected to the inner wall of the tower body 100 by bolts, so that the top of the base 201 and the inner wall of the tower body 100 are sealed, and the flue gas will not pass through this position and leave the other side of the tower body 100, so that the flue gas must pass through the filter mechanism 200 for adsorption and denitration before it can be discharged;

[0035] The bottom surface 203 of the base 201 is a closed structure, and the bottom surface 203 of the base 201 is a downwardly disposed conical structure, which can reduce the exhaust gas flow resistance, so that the exhaust gas passes through the conical surface and is guided to the open position at the bottom of the gap and enters the gap;

[0036] The side surface of the substrate 201 is provided with a plurality of evenly distributed through holes 204, which are circular in shape. A fixing plate 205 connected to the through hole 204 is provided on the inner wall of the substrate 201 at the edge of the through hole 204, and the fixing plate 205 is a circular ring structure, and is used to be connected to the denitration unit 400.

[0037] The denitration unit 400 is located inside the base 201. A single denitration unit 400 is light in weight and easy to install. The maintenance of the denitration unit 400 can be performed by manually entering the tower body 100.

[0038] The denitration unit 400 is provided with a cavity 403 inside, and an opening 404 communicating with the cavity 403 is provided on one side of the denitration unit 400, and the opening 404 matches the shape of the through hole 204 of the substrate 201 and is arranged one-to-one, and the fixing plate 205 at the edge of the through hole 204 is inserted into the corresponding opening 404 of the denitration unit 400 and is threadedly connected with the inner wall of the opening 404, so that the denitration unit 400 and the substrate 201 are assembled into a whole.

[0039] The middle of the denitration unit 400 is a conical tube structure, and one section of the conical tube is the opening 404, and the other end of the conical tube is a hemispherical structure. The internal cross-sectional size of the conical tube gradually increases from the opening 404 to the inside, so that after the exhaust gas enters the denitration unit 400 from the through hole 204, the pressure value inside the cavity 403 gradually decreases due to the increase in the cross-sectional size of the cavity 403, which promotes the exhaust gas to flow deep into the cavity 403 and contact with the inner wall of the denitration unit 400, so as to fully utilize the effective filtering area of ​​the denitration unit 400 for adsorption denitration;

[0040] The side wall 401 of the denitration unit 400 is provided with an interlayer and a plurality of catalyst particles 402 are filled in the interlayer. The catalyst particles 402 are 4 mm columnar activated carbon. The inner and outer side walls 401 of the denitration unit 400 respectively adopt a perforated plate structure, so that the exhaust gas enters and leaves the denitration unit 400 through the perforated plate, and the catalyst particles 402 complete the adsorption and denitration treatment of the exhaust gas.

[0041] Furthermore, a material port 405 for loading and unloading catalyst particles 402 is provided on the outer side wall 401 of the denitration unit 400, and the material port 405 is sealed by a sealing plug connected thereto, and the catalyst particles 402 can be unloaded and loaded through the material port 405 to meet the needs of daily maintenance.

[0042] A working process of a denitration absorption tower structure is as follows: the exhaust gas enters the tower body 100 from the air inlet at the bottom end of the tower body 100, passes through the bottom surface 203 of the conical structure of the base body 201 to enter the gap, and at the same time passes through the through hole 204 of the base body 201 to enter each denitration unit 400. After the exhaust gas is adsorbed and denitrated by the denitration unit 400, it enters the base body 201 and continues to flow upward, and finally is discharged through the air outlet at the top end of the tower body 100;

[0043] In this process, through the combined structure of the denitrification unit 400 and the substrate 201, the original plate-like structure is replaced by the three-dimensional denitrification unit 400. On the one hand, the denitrification units 400 cooperate with each other to greatly increase the adsorption area, so that more catalyst particles 402 can be inflated and contacted with the exhaust gas. On the other hand, each denitrification unit 400 is in contact with the exhaust gas synchronously without any order of sequence, which can ensure the relative consistency of the operating time and intensity of each denitrification unit 400, so that the service life of each denitrification unit 400 is consistent, and maintenance operations can be carried out at the same time, reducing the difficulty of maintenance.

[0044] The above descriptions are only preferred implementation modes of the present invention. As long as the technical solutions for the purpose of the present invention are achieved by substantially the same means, they are all within the protection scope of the present invention.

Claims

1. A denitration absorption tower structure, comprising a tower body, characterized in that: Also included is a filtering mechanism located inside the tower body, the filtering mechanism comprising a substrate and a plurality of denitrification units; The base is a cylindrical shell structure arranged parallel to the inner wall of the tower body, the top surface of the base is an open structure, and the edge of the top surface is connected and fixed to the inner wall of the tower body, the bottom surface of the base is a closed structure, a gap is provided between the outer side wall of the base and the inner wall of the tower body, and a plurality of through holes are provided on the side surface of the base; The denitrification unit is located inside the substrate, and a cavity is provided inside the denitrification unit. An opening connected to the cavity is provided on one side of the denitrification unit, and the opening matches the shape of the through hole of the substrate and is connected to each other one by one. The side wall of the denitrification unit is provided with an interlayer and a plurality of catalyst particles are filled in the interlayer. The inner and outer side walls of the denitrification unit respectively adopt a perforated plate structure.

2. The denitration absorption tower structure according to claim 1, characterized in that: A fixing plate connected to the through hole is provided on the inner wall of the substrate at the edge of the through hole, the fixing plate is an annular structure, and the fixing plate is connected to the denitration unit.

3. The denitration absorption tower structure according to claim 2, characterized in that: The fixing plate is inserted into the opening of the denitration unit and is threadedly connected to the inner wall of the opening.

4. The denitration absorption tower structure according to claim 1, characterized in that: The internal cross-sectional dimensions of the middle portion of the denitration unit gradually increase from the opening position to the inside thereof.

5. The denitration absorption tower structure according to claim 1, characterized in that: The bottom surface of the base is a conical structure arranged downward.

6. The denitration absorption tower structure according to claim 1, characterized in that: At least one group of diverter plates is also provided inside the gap. The diverter plates are annular panels arranged parallel to the outer wall of the base. The diverter plates are located in the gap and are evenly distributed from the inside to the outside. The bottom end of the diverter plate is set at the same height as the ground edge of the base, and the top end of the diverter plate is located at gradually increasing heights from the inside to the outside.

7. The denitration absorption tower structure according to claim 6, characterized in that: The inner wall of the diverter plate is connected and fixed respectively through the diverter plate or the base inside it.

8. The denitration absorption tower structure according to claim 1, characterized in that: The edge of the top surface of the base body is provided with a flange plate connected thereto, and the outer edge of the flange plate is in contact with the inner wall of the tower body and is tightly connected to each other.

9. The denitration absorption tower structure according to claim 1, characterized in that: An inlet for loading and unloading catalyst particles is provided on the outer side wall of the denitration unit, and the inlet is sealed by a sealing plug connected thereto.

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