Low-temperature denitration oxidation reactor structure of gas-fired boiler

Abstract

The utility model relates to the technical field of denitration oxidation reactors, in particular to a gas boiler low-temperature denitration oxidation reactor structure which comprises a filter box, a denitration barrel, a smoke inlet pipe, a conduction mechanism, a fixing ring, a fixing seat, a positioning mechanism, a placing groove, a first cavity and a ventilation opening. The denitration barrel is fixedly arranged on the filter box, the smoke inlet pipe is arranged on the filter box in a penetrating mode and communicates with the filter cylinder, the conduction mechanism is arranged in the denitration barrel and used for conducting filtered smoke into the denitration barrel, the fixing ring is fixedly arranged on the side wall of the denitration barrel, and the cylindrical fixing seat is arranged in the denitration barrel in a sliding mode. The positioning mechanism is arranged in the fixed seat and used for positioning the fixed seat and the denitration barrel, a plurality of placing grooves are formed in the side wall of the fixed seat, and by means of the technical scheme, the problem that in the prior art, a catalyst is inconvenient to replace, and consequently the flue gas treatment efficiency is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration oxidation reactors, in particular to a structure of a low-temperature denitration oxidation reactor for a gas boiler. Background Art

[0002] When a gas boiler is operating, it is necessary to treat the waste gas generated by incineration at the outlet of the gas boiler. During the treatment, it is necessary to treat the nitrogen oxides in the waste gas, which is the denitration reaction. During the treatment, the waste gas is passed through a catalyst, and the nitrogen oxides in the waste gas are treated under the action of the catalyst. The original catalyst was a vanadium-titanium system catalyst, but it could only be used when the waste gas temperature was above 180°C. In recent years, a super-low-temperature SCR denitration catalyst has emerged, using a new type of manganese-based catalyst, which does not require heating the flue gas.

[0003] However, during the process of treating the flue gas with the new type of manganese-based catalyst, there will inevitably be a certain amount of soot and SO2 in the flue gas. When the soot and SO2 continuously accumulate on the surface of the catalyst, it is easy to cause a decrease in the denitration efficiency. Therefore, when the treatment efficiency of the catalyst decreases, it is necessary to take out the catalyst for regeneration or replacement. Most of the catalysts are fixed in the reactor body by bolts, and the operation of taking out and replacing the catalyst is troublesome, resulting in a decrease in the treatment efficiency. Summary of the Utility Model

[0004] The utility model provides a structure of a low-temperature denitration oxidation reactor for a gas boiler, which solves the problem that the catalyst is not easy to replace in the prior art and affects the flue gas treatment efficiency.

[0005] The technical solution of the utility model is as follows: A structure of a low-temperature denitration oxidation reactor for a gas boiler includes a filter box, a denitration barrel, a smoke inlet pipe, a conduction mechanism, a fixing ring, a fixing seat, a positioning mechanism, a placement groove, a first cavity, and a ventilation port. A filter cylinder is fixedly used inside the filter box. The denitration barrel is fixedly arranged on the filter box. The smoke inlet pipe is penetrated and arranged on the filter box, and the smoke inlet pipe is communicated with the filter cylinder. The conduction mechanism is arranged inside the denitration barrel for conducting the filtered flue gas into the denitration barrel. The fixing ring is fixedly arranged on the side wall of the denitration barrel. The fixing seat is cylindrical, and the fixing seat is slidably arranged inside the denitration barrel. The positioning mechanism is arranged inside the fixing seat for positioning between the fixing seat and the denitration barrel. A plurality of the placement grooves are formed on the side wall of the fixing seat, and a catalyst bed is slidably arranged inside the placement groove. The first cavity is formed inside the fixing seat, a smoke exhaust port is formed on the inner top wall of the first cavity, a ventilation port is formed on the side wall of the placement groove, one end of the ventilation port is communicated with the first cavity, and the other end of the ventilation port penetrates through the placement groove and is communicated with the denitration barrel.

[0006] Preferably, an installation opening is formed on the inner bottom wall of the filtering box, an internal thread is provided on the side wall of the installation opening, a threaded column is arranged in the installation opening through threaded fit, and an installation disc is fixedly arranged on the threaded column.

[0007] Furthermore, the conduction mechanism includes:

[0008] A support cover which is rotatably arranged on the bottom of the denitration barrel;

[0009] Conduction pipes, a plurality of the conduction pipes are communicated on the support cover, and one end of the conduction pipe far away from the support cover is sealed;

[0010] Conduction nozzles, a plurality of the conduction nozzles are arranged on the side wall of the conduction pipe;

[0011] A hose which penetrates through the side wall of the filtering box, one end of the hose is communicated with the filtering box, and the other end of the hose is communicated with the support cover;

[0012] A rotating mechanism which is arranged in the denitration barrel and is used for controlling the support cover to rotate.

[0013] Still further, the rotating mechanism includes:

[0014] A first annular rack which is fixedly arranged on the support cover;

[0015] A first gear which is rotatably arranged on the bottom of the denitration barrel, and the first gear is meshed with the first annular rack;

[0016] A first motor which is fixedly arranged in the filtering box, and the output end of the first motor is fixedly connected with the first gear.

[0017] Furthermore, a support opening is formed between the denitration barrel and the filtering box, a support column is fixedly arranged on the support cover, the support column penetrates through the support opening and extends into the filtering cylinder, a plurality of cleaning plates are arranged on the circumferential side of the support column, cleaning bristles are evenly distributed on the cleaning plates, and a plurality of support rods are fixedly arranged between the cleaning plates and the support column.

[0018] On the basis of the above scheme, the positioning mechanism includes:

[0019] An annular groove which is formed on the inner wall of the denitration barrel;

[0020] Positioning grooves, a plurality of the positioning grooves are formed on the side wall of the fixed seat, and a first gear is rotatably arranged in the positioning grooves;

[0021] Positioning blocks which are fixedly arranged on the first gear;

[0022] A synchronous rotation mechanism is provided inside the fixed seat and is used to control the synchronous rotation of multiple first gears.

[0023] Based on the above solution, the synchronous rotation mechanism includes:

[0024] A second cavity, which is annularly arranged, is opened inside the fixed seat and is communicated with the positioning groove;

[0025] A first toothed ring, which meshes with the first gear;

[0026] A driving column is fixedly arranged on one of the first gears, passes through the side wall of the positioning groove and extends out of the fixed seat, and a handwheel is fixedly arranged at one end of the driving column away from the first gear;

[0027] A torsion spring is sleeved on the driving column, and both ends of the torsion spring are fixedly connected to the handwheel and the fixed seat respectively.

[0028] The working principle and beneficial effects of the present utility model are as follows:

[0029] 1. In the present utility model, through the setting of the conduction mechanism, flue gas can be blown into the filter cylinder through the smoke inlet pipe. After that, the flue gas filtered by the filter cylinder can enter the support cover and the conduction pipe through the hose, and at the same time, it is blown into the denitration barrel through the conduction nozzle. Then, the flue gas can contact the catalyst bed through the air permeable port, so that the catalyst bed can perform denitration treatment on the flue gas;

[0030] 2. In the present utility model, through the setting of the positioning mechanism, the rotation of the handwheel can drive the first gear to rotate through the driving column, and at the same time, drive multiple first gears to rotate synchronously through the meshing of the first gear and the first toothed ring. Furthermore, the rotation of the first gear drives the positioning block to move around the first gear. During this process, the cooperation between the positioning block and the annular groove can be used to fix and disassemble the fixed seat, so that the catalyst bed in the placement groove can be replaced after disassembly;

[0031] 3. In the present utility model, through the setting of the rotation mechanism, the operation of the first motor can drive the first gear to rotate, and at the same time, drive the support cover to rotate through the meshing of the first gear and the first annular rack, so that the conduction pipe and the conduction nozzle can move around the support cover, thereby improving the uniformity of the flue gas entering the denitration barrel and further improving the treatment effect of the flue gas;

[0032] 4. In the present utility model, through the arrangement of the support column, the cleaning plate, and the support rod, the rotation of the support cover can drive the support column to rotate, and at the same time, the cleaning plate can be driven to move through the support rod, so that the filter cartridge can be cleaned by the cleaning bristles, thereby improving the filtering effect of the filter cartridge on the flue gas.

[0033] 5. In the present utility model, through the arrangement of the filter box, the denitration barrel, the smoke inlet pipe, the conduction mechanism, the fixing ring, the fixing seat, the positioning mechanism, the placement groove, the first cavity, and the air vents, it is convenient to install and disassemble the fixing seat through the positioning mechanism, so that the catalyst bed can be replaced in the placement groove, solving the problem in the prior art that the catalyst is not easy to replace and affects the flue gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0035] Figure 1 is a schematic structural diagram of the present utility model;

[0036] Figure 2 is a schematic sectional structure diagram of the present utility model;

[0037] Figure 3 is a schematic sectional structure diagram of the fixing seat of the present utility model;

[0038] Figure 4 is a schematic structure diagram of the rotation mechanism and the support column of the present utility model.

[0039] In the figure: 1, filter box; 2, denitration barrel; 3, smoke inlet pipe; 4, fixing ring; 5, fixing seat; 6, catalyst bed; 7, first cavity; 8, air vents; 9, threaded column; 10, mounting plate; 11, support cover; 12, conduction pipe; 13, conduction nozzle; 14, hose; 15, first annular rack; 16, first gear; 17, first motor; 18, support column; 19, cleaning plate; 20, support rod; 21, annular groove; 22, positioning block; 23, first toothed ring; 24, driving column; 25, handwheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0041] As Figures 1 to 4As shown in the figure, this embodiment proposes a structure of a low-temperature denitrification oxidation reactor for a gas boiler, which includes a filter box 1, a denitrification barrel 2, a smoke inlet pipe 3, a conduction mechanism, a fixing ring 4, a fixing seat 5, a positioning mechanism, a placement groove, a first cavity 7, and a ventilation port 8. A filter cylinder is fixedly used inside the filter box 1. The denitrification barrel 2 is fixedly arranged on the filter box 1. The smoke inlet pipe 3 is penetrated and arranged on the filter box 1, and the smoke inlet pipe 3 is communicated with the filter cylinder. The conduction mechanism is arranged inside the denitrification barrel 2 and is used to conduct the filtered flue gas into the denitrification barrel 2. The fixing ring 4 is fixedly arranged on the side wall of the denitrification barrel 2. The fixing seat 5 is cylindrical, and the fixing seat 5 is slidably arranged inside the denitrification barrel 2. The positioning mechanism is arranged inside the fixing seat 5 and is used to position between the fixing seat 5 and the denitrification barrel 2. A plurality of placement grooves are opened on the side wall of the fixing seat 5, and a catalyst bed 6 is slidably arranged inside the placement grooves. The first cavity 7 is opened inside the fixing seat 5, a smoke exhaust port is opened on the inner top wall of the first cavity 7, a ventilation port 8 is opened on the side wall of the placement groove, one end of the ventilation port 8 is communicated with the first cavity 7, and the other end of the ventilation port 8 penetrates through the placement groove and is communicated with the denitrification barrel 2.

[0042] Referring to Figure 2 , an installation port is opened on the inner bottom wall of the filter box 1, internal threads are arranged on the side wall of the installation port, a threaded column 9 is arranged inside the installation port through threaded fit, and an installation disc 10 is fixedly arranged on the threaded column 9. The rotation of the fixed disc can drive the threaded column 9 to rotate, so as to realize the installation and disassembly of the threaded column 9, and thus facilitate the cleaning of the soot inside the filter cylinder.

[0043] Referring to Figure 2 and Figure 4 , the conduction mechanism includes a support cover 11, a conduction pipe 12, a conduction nozzle 13, a hose 14, and a rotation mechanism. The support cover 11 is rotatably arranged on the bottom of the denitrification barrel 2. A plurality of conduction pipes 12 are communicated with the support cover 11. One end of the conduction pipe 12 away from the support cover 11 is sealed. A plurality of conduction nozzles 13 are opened on the side wall of the conduction pipe 12. The hose 14 is penetrated and arranged on the side wall of the filter box 1. One end of the hose 14 is communicated with the filter box 1, and the other end of the hose 14 is communicated with the support cover 11. The rotation mechanism is arranged inside the denitrification barrel 2 and is used to control the rotation of the support cover 11.

[0044] Specifically, the flue gas can be blown into the filter cylinder through the smoke inlet pipe 3. After that, the flue gas filtered by the filter cylinder can enter the support cover 11 and the conduction pipe 12 through the hose 14, and at the same time, it is blown into the denitrification barrel 2 through the conduction nozzle 13. After that, the flue gas can contact the catalyst bed 6 through the ventilation port 8, so that the flue gas can be denitrified by the catalyst bed 6.

[0045] Referring to Figure 2 and Figure 4, the rotating mechanism includes a first annular rack 15, a first gear 16, and a first motor 17. The first annular rack 15 is fixedly arranged on the support cover 11. The first gear 16 is rotatably arranged on the bottom of the denitration barrel 2. The first gear 16 meshes with the first annular rack 15. The first motor 17 is fixedly arranged in the filter box 1, and the output end of the first motor 17 is fixedly connected to the first gear 16.

[0046] Specifically, the operation of the first motor 17 can drive the first gear 16 to rotate. At the same time, through the meshing of the first gear 16 and the first annular rack 15, the support cover 11 is driven to rotate, so that the transfer pipe 12 and the transfer nozzle 13 can move around the support cover 11, thereby improving the uniformity of the flue gas entering the denitration barrel 2, and further improving the treatment effect of the flue gas.

[0047] Refer to Figure 2 With Figure 4 , a support opening is provided between the denitration barrel 2 and the filter box 1. A support column 18 is fixedly arranged on the support cover 11. The support column 18 penetrates through the support opening and extends into the filter cylinder. A plurality of cleaning plates 19 are arranged on the circumferential side of the support column 18. Cleaning bristles are evenly distributed on the cleaning plates 19. A plurality of support rods 20 are fixedly arranged between the cleaning plates 19 and the support column 18.

[0048] Specifically, the rotation of the support cover 11 can drive the support column 18 to rotate. At the same time, the cleaning plates 19 can be driven to move through the support rods 20, so that the filter cylinder can be cleaned by the cleaning bristles, thereby improving the filtering effect of the filter cylinder on the flue gas.

[0049] Refer to Figure 2 With Figure 3 , the positioning mechanism includes an annular groove 21, a positioning groove, a positioning block 22, and a synchronous rotation mechanism. The annular groove 21 is opened on the inner wall of the denitration barrel 2. A plurality of positioning grooves are opened on the side wall of the fixed seat 5. The first gear 16 is rotatably arranged in the positioning groove. The positioning block 22 is fixedly arranged on the first gear 16. The synchronous rotation mechanism is arranged in the fixed seat 5 and is used to control the synchronous rotation of a plurality of first gears 16. The synchronous rotation mechanism includes a second cavity, a first toothed ring 23, a driving column 24, and a torsion spring. The second cavity is arranged in a ring shape and is opened in the fixed seat 5. The second cavity is communicated with the positioning groove. The first toothed ring 23 meshes with the first gear 16. The driving column 24 is fixedly arranged on one of the first gears 16. The driving column 24 penetrates through the side wall of the positioning groove and extends out of the fixed seat 5. A handwheel 25 is fixedly arranged at one end of the driving column 24 away from the first gear 16. The torsion spring is sleeved on the driving column 24, and both ends of the torsion spring are fixedly connected to the handwheel 25 and the fixed seat 5 respectively.

[0050] Specifically, the operator rotates the handwheel 25. The rotation of the handwheel 25 can drive the first gear 16 to rotate through the driving column 24. At the same time, through the meshing of the first gear 16 and the first toothed ring 23, multiple first gears 16 are driven to rotate synchronously. Furthermore, the rotation of the first gear 16 drives the positioning block 22 to move around the first gear 16. During this process, the cooperation between the positioning block 22 and the annular groove 21 can be used to fix and disassemble the fixed seat 5, so that the catalyst bed 6 in the placement groove can be replaced after disassembly.

[0051] In the present utility model, during use, the operator can blow the flue gas into the filter cylinder through the flue gas inlet pipe 3. After that, the flue gas filtered by the filter cylinder can enter the support cover 11 and the conduction pipe 12 through the hose 14, and at the same time, it is blown into the denitration barrel 2 through the conduction nozzle 13. Then, the flue gas can contact the catalyst bed 6 through the air permeable port 8, so that the catalyst bed 6 can be used to denitrate the flue gas. During this process, the operator controls the first motor 17 to work. The operation of the first motor 17 can drive the first gear 16 to rotate. At the same time, through the meshing of the first gear 16 and the first annular rack 15, the support cover 11 is driven to rotate, so that the conduction pipe 12 and the conduction nozzle 13 can move around the support cover 11, thereby improving the uniformity of the flue gas entering the denitration barrel 2, and further improving the treatment effect of the flue gas. At the same time, the rotation of the support cover 11 can drive the support column 18 to rotate, and at the same time, the cleaning plate 19 can be driven to move through the support rod 20, so that the filter cylinder can be cleaned by the cleaning bristles, thereby improving the filtering effect of the filter cylinder on the flue gas. When the catalyst bed 6 needs to be replaced, the operator rotates the handwheel 25. The rotation of the handwheel 25 can drive the first gear 16 to rotate through the driving column 24. At the same time, through the meshing of the first gear 16 and the first toothed ring 23, multiple first gears 16 are driven to rotate synchronously. Furthermore, the rotation of the first gear 16 drives the positioning block 22 to move around the first gear 16. During this process, the cooperation between the positioning block 22 and the annular groove 21 can be used to fix and disassemble the fixed seat 5, so that the catalyst bed 6 in the placement groove can be replaced after disassembly.

[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A low-temperature denitration oxidation reactor structure for a gas boiler, characterized in that: include: A filter box (1), wherein a filter cartridge is fixedly used in the filter box (1); A denitration barrel (2), wherein the denitration barrel (2) is fixedly arranged on the filter box (1); A smoke inlet pipe (3), the smoke inlet pipe (3) is arranged through the filter box (1), and the smoke inlet pipe (3) is connected to the filter cartridge; A conduction mechanism, the conduction mechanism being arranged in the denitration barrel (2) and being used for conducting the filtered flue gas into the denitration barrel (2); A fixing ring (4), the fixing ring (4) being fixedly arranged on the side wall of the denitration barrel (2); A fixing seat (5), the fixing seat (5) being arranged in a cylindrical shape, and the fixing seat (5) being slidably arranged in the denitration barrel (2); A positioning mechanism, the positioning mechanism is arranged in the fixing seat (5) and is used for positioning between the fixing seat (5) and the denitration barrel (2); Placement grooves, a plurality of the placement grooves are provided on the side wall of the fixing seat (5), and a catalyst bed (6) is slidably arranged in the placement grooves; A first cavity (7), the first cavity (7) being disposed in the fixing seat (5), and a smoke exhaust port being disposed on an inner top wall of the first cavity (7); A vent (8) is provided on the side wall of the placement tank, one end of the vent (8) is connected to the first cavity (7), and the other end of the vent (8) passes through the placement tank and is connected to the denitration barrel (2).

2. A gas boiler low-temperature denitration oxidation reactor structure according to claim 1, characterized in that: The inner bottom wall of the filter box (1) is provided with a mounting opening, the side wall of the mounting opening is provided with an internal thread, a threaded column (9) is provided in the mounting opening through threaded matching, and a mounting plate (10) is fixedly provided on the threaded column (9).

3. A gas boiler low-temperature denitration oxidation reactor structure according to claim 2, characterized in that: The transmission mechanism comprises: A support cover (11), the support cover (11) is rotatably arranged on the bottom of the denitration barrel (2); A conduction tube (12), wherein a plurality of the conduction tubes (12) are connected and arranged on the support cover (11), and one end of the conduction tube (12) away from the support cover (11) is sealed; A conduction nozzle (13), wherein a plurality of the conduction nozzles (13) are provided on the side wall of the conduction tube (12); A hose (14), the hose (14) being arranged through the side wall of the filter box (1), one end of the hose (14) being in communication with the filter box (1), and the other end of the hose (14) being in communication with the support cover (11); A rotating mechanism is arranged in the denitration barrel (2) and is used to control the support cover (11) to rotate.

4. A gas boiler low-temperature denitration oxidation reactor structure according to claim 3, characterized in that: The rotating mechanism comprises: A first annular rack (15), wherein the first annular rack (15) is fixedly arranged on the support cover (11); A first gear (16), the first gear (16) being rotatably disposed on the bottom of the denitration barrel (2), the first gear (16) being meshed with the first annular rack (15); A first motor (17), wherein the first motor (17) is fixedly arranged in the filter box (1), and an output end of the first motor (17) is fixedly connected to the first gear (16).

5. A gas boiler low-temperature denitration oxidation reactor structure according to claim 4, characterized in that: A support opening is provided between the denitration barrel (2) and the filter box (1); a support column (18) is fixedly provided on the support cover (11); the support column (18) passes through the support opening and extends into the filter barrel; a plurality of cleaning plates (19) are provided around the support column (18); cleaning bristles are evenly distributed on the cleaning plates (19); and a plurality of support rods (20) are fixedly provided between the cleaning plates (19) and the support columns (18).

6. A gas boiler low-temperature denitration oxidation reactor structure according to claim 5, characterized in that: The positioning mechanism comprises: an annular groove (21), the annular groove (21) being formed on the inner wall of the denitration barrel (2); Positioning grooves, a plurality of said positioning grooves are provided on the side wall of the fixing seat (5), and a first gear (16) is rotatably arranged in the positioning groove; A positioning block (22), the positioning block (22) being fixedly disposed on the first gear (16); A synchronous rotation mechanism is arranged in the fixing seat (5) and is used to control the first gears (16) to rotate synchronously.

7. A gas boiler low-temperature denitration oxidation reactor structure according to claim 6, characterized in that: The synchronous rotation mechanism comprises: a second cavity, the second cavity being arranged in an annular shape, the second cavity being arranged in the fixing seat (5), and the second cavity being communicated with the positioning groove; A first gear ring (23), the first gear ring (23) meshing with the first gear (16); A driving column (24), the driving column (24) being fixedly arranged on one of the first gears (16), the driving column (24) passing through the side wall of the positioning groove and extending out of the fixing seat (5), and a hand wheel (25) being fixedly arranged on one end of the driving column (24) away from the first gear (16); A torsion spring is sleeved on the driving column (24), and two ends of the torsion spring are respectively fixedly connected to the hand wheel (25) and the fixing seat (5).

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