Low-temperature desulfurization and denitrification integrated device

Abstract

The utility model discloses a low temperature desulfurization and denitration integration device relates to gas processing technical field, including bottom bearing frame, the right side fixed connection of bottom bearing frame top has the denitration dust removal bin, the bottom of denitration dust removal bin is welded with two groups of ash bucket, the front and rear both ends between denitration dust removal bin inside are provided with the flow guide component of being convenient for guiding airflow. This low temperature desulfurization and denitration integration device is provided with side guide plate, horizontal guide plate and air guide cylinder, when using, when the flue gas enters the denitration dust removal bin, the position of flue gas is lifted by side guide plate, makes it along horizontal guide plate and horizontal baffle between and travels, owing to the space between horizontal guide plate and horizontal baffle is smaller, and the air pressure increases, and the gas goes down along the air guide cylinder, and every group ceramic fiber filter core shell can fully contact, realizes the function of guiding intake uniform filtration, solves the problem that the device does not have the function of guiding intake uniform filtration.

Description

Technical Field

[0001] This utility model relates to the field of gas treatment technology, specifically to an integrated low-temperature desulfurization and denitrification device. Background Technology

[0002] Low-temperature desulfurization and denitrification technology refers to the use of catalysts to reduce NOx into harmless nitrogen and water vapor at relatively low temperatures (usually below 180℃). It can be applied to various combustion equipment, such as coal-fired boilers, cement kilns, industrial furnaces, and steel pellet sintering equipment, and has broad application prospects.

[0003] Most low-temperature desulfurization and denitrification equipment currently on the market are similar in overall structure, consisting of a desulfurization tower and a denitrification and dust removal chamber. In the desulfurization tower, the exhaust gas is mixed with powdered desulfurization catalyst for desulfurization, and then enters the denitrification and dust removal chamber. Dust is isolated by ceramic fiber filter elements. The gas comes into contact with the denitrification catalyst inside the filter element to generate nitrogen and water. In actual use, there are some functional deficiencies and room for improvement. For example, when the gas enters the denitrification and dust removal chamber along the pipeline, there is a significant difference between the filter elements near the air inlet and those far from the air inlet. The filter elements near the air inlet are covered with a large amount of dust, while the filter elements far from the air inlet filter less dust. The overall utilization rate of the filter elements is not high, and it does not have the function of guiding the introduced gas for uniform filtration.

[0004] Now, a novel integrated low-temperature desulfurization and denitrification device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an integrated low-temperature desulfurization and denitrification device to solve the problem mentioned in the background art of not having the function of uniformly filtering the introduced air.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature desulfurization and denitrification integrated device, comprising a bottom support frame, a denitrification and dust removal chamber fixedly connected to the right side of the top of the bottom support frame, two sets of ash hoppers welded to the bottom of the denitrification and dust removal chamber, a desulfurization tower fixedly connected to the left side of the top of the bottom support frame, an air inlet provided at the bottom of the left side of the desulfurization tower, a powdered desulfurizing agent inlet provided at the middle position of the left side of the desulfurization tower, a gas guide pipe fixedly connected between the denitrification and dust removal chamber and the desulfurization tower, and a transverse partition plate fixedly connected laterally between the two sides inside the denitrification and dust removal chamber, the bottom end of the transverse partition plate being threaded. The system is equipped with multiple sets of ceramic fiber filter cartridges, each filled with a porous ceramic liner. A denitrification agent replenishment pipe is located above each ceramic fiber filter cartridge. An air tank is fixedly connected to the left side of the top of the denitrification and dust removal chamber. A pulse air pipe is located above the transverse partition. A pulse valve is located between the air tank and the pulse air pipe. Multiple nozzles are fixedly connected to the bottom end of the pulse air pipe. An air outlet pipe is fixedly connected to the top right side of the denitrification and dust removal chamber. A PLC controller is fixedly connected to the right side of the bottom support frame. A flow guiding component is located between the front and rear ends of the interior of the denitrification and dust removal chamber to facilitate airflow.

[0007] The flow guiding assembly includes a horizontal guide plate, which is fixedly connected between the front and rear ends inside the denitrification and dust removal chamber. A side guide plate is welded to the left side of the horizontal guide plate, and multiple sets of air guide cylinders are welded to the bottom end of the horizontal guide plate.

[0008] As a further technical solution of this utility model, the right side of the horizontal guide plate is fixedly connected to the right side of the denitrification and dust removal chamber, and the left side of the side guide plate is fixedly connected to the left side of the denitrification and dust removal chamber.

[0009] As a further technical solution of this utility model, the front and rear ends of the side guide plate and the horizontal guide plate are flush, and the front and rear ends of the side guide plate are respectively fixedly connected to the front and rear ends of the interior of the denitrification and dust removal chamber.

[0010] As a further technical solution of this utility model, the vertical center lines of the air guide tube and the ceramic fiber filter element shell coincide, and the air guide tube is in the shape of a trumpet with a larger upper part and a smaller lower part.

[0011] As a further technical solution of this utility model, a flange pipe is connected to the right flange of the gas outlet pipe, a gas sensor is fixedly connected to the top of the flange pipe, a sensor host is fixedly connected to the top of the gas sensor, an audible and visual alarm is fixedly connected to the right side of the sensor host, the bottom end of the gas sensor extends through the top of the flange pipe and into the interior, and the gas sensor, the sensor host, and the audible and visual alarm are electrically connected.

[0012] As a further technical solution of this utility model, the bottom end of the ceramic fiber filter element shell is threadedly connected to a bottom hollow shell, the outer ring of the top of the bottom hollow shell is fixedly connected to an internal threaded ring, the inner ring of the top of the bottom hollow shell is fixedly connected to an external threaded ring, the top of the bottom hollow shell has multiple sets of collecting holes, a catalyst overflow pipe is provided below the bottom hollow shell, the internal thread of the internal threaded ring matches the external thread of the ceramic fiber filter element shell, the external thread of the external threaded ring matches the internal thread of the porous ceramic liner, and the catalyst overflow pipe and the bottom hollow shell are connected by a flexible tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the integrated low-temperature desulfurization and denitrification device not only realizes the function of uniform filtration of the introduced gas, but also realizes the function of detecting the composition of the effluent gas, and also realizes the function of collecting the catalyst overflow.

[0014] Equipped with side guide plates, horizontal guide plates, and air guide tubes, the flue gas enters the desulfurization tower through the inlet during operation. The powdered desulfurization catalyst enters through the powdered desulfurizing agent inlet and mixes thoroughly with the flue gas in the desulfurization tower for desulfurization. The mixed flue gas then enters the denitrification and dust removal chamber along the air guide tube. The ceramic fiber filter shell intercepts the dust, and the denitrification catalyst impregnated in the porous ceramic lining reacts with the gas, reducing it to nitrogen and water. When the flue gas enters the denitrification and dust removal chamber, the side guide plates raise the position of the flue gas, allowing it to travel between the horizontal guide plates and the horizontal partitions. Due to the small space between the horizontal guide plates and the partitions, the air pressure increases, and the gas descends along the air guide tube, ensuring full contact with each set of ceramic fiber filter shells, thus achieving the function of uniform filtration of the introduced air.

[0015] Equipped with a flange pipe, gas sensor, sensor host, and audible and visual alarm, the gas, after passing through the ceramic fiber filter shell, gathers at the top of the denitrification and dust removal chamber and is discharged through the outlet pipe. When the gas passes through the flange pipe on the side of the outlet pipe, the gas sensor detects its composition, and the audible and visual alarm on the side of the sensor host sounds an alarm to remind the staff to carry out timely maintenance, thus realizing the function of detecting the composition of the gas.

[0016] By incorporating a ceramic fiber filter cartridge shell, a porous ceramic liner, a catalyst overflow pipe, a bottom hollow shell, an internal threaded ring, a collection hole, and an external threaded ring, the catalyst is injected from the denitrification agent replenishment pipe during use, fully saturating the porous ceramic liner. The overflowing catalyst is blocked by the internal and external threaded rings, flows along the collection hole into the bottom hollow shell, and is then collected and discharged through the catalyst overflow pipe, thus achieving the function of catalyst overflow collection. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a top view of the horizontal guide plate structure of this utility model;

[0019] Figure 3 For the present utility model Figure 1 Enlarged cross-sectional view of a portion of point A in the middle section;

[0020] Figure 4 This is a partial enlarged cross-sectional view of the ceramic fiber filter cartridge shell of this utility model.

[0021] Figure 5 This is a top-view enlarged structural diagram of the hollow shell at the bottom of this utility model.

[0022] In the diagram: 1. Bottom support frame; 2. Denitrification and dust removal bin; 3. Ash hopper; 4. Desulfurization tower; 5. Air inlet; 6. Powdered desulfurizing agent inlet; 7. Air guide pipe; 8. Side guide plate; 9. Horizontal guide plate; 10. Air guide cylinder; 11. Pulse valve; 12. Air manifold; 13. Pulse air pipe; 14. Nozzle; 15. Horizontal partition; 16. Air outlet pipe; 17. Flange pipe; 18. Gas sensor; 19. Sensor host; 20. Audible and visual alarm; 21. Denitrification agent replenishment pipe; 22. Ceramic fiber filter shell; 23. Porous ceramic liner; 24. Catalyst overflow pipe; 25. Bottom hollow shell; 26. Internal threaded ring; 27. Collection hole; 28. External threaded ring; 29. ​​PLC controller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-5A low-temperature desulfurization and denitrification integrated device includes a bottom support frame 1. A denitrification and dust removal chamber 2 is fixedly connected to the right side of the top of the bottom support frame 1. Two sets of ash hoppers 3 are welded to the bottom of the denitrification and dust removal chamber 2. A desulfurization tower 4 is fixedly connected to the left side of the top of the bottom support frame 1. An air inlet 5 is provided at the bottom of the left side of the desulfurization tower 4. A powdered desulfurizing agent inlet 6 is provided at the middle position of the left side of the desulfurization tower 4. A gas guide pipe 7 is fixedly connected between the denitrification and dust removal chamber 2 and the desulfurization tower 4. A horizontal partition 15 is fixedly connected between the two sides inside the denitrification and dust removal chamber 2. Multiple sets of ceramic fiber filter cartridges 22 are threaded to the bottom of the horizontal partition 15. The interior of the fiber filter cartridge 22 is filled with a porous ceramic liner 23. A denitrification agent replenishment pipe 21 is provided above the ceramic fiber filter cartridge 22. An air tank 12 is fixedly connected to the left side of the top of the denitrification and dust removal chamber 2. A pulse air pipe 13 is provided above the partition plate 15. A pulse valve 11 is provided between the air tank 12 and the pulse air pipe 13. Multiple sets of nozzles 14 are fixedly connected to the bottom end of the pulse air pipe 13. An air outlet pipe 16 is fixedly connected to the top right side of the denitrification and dust removal chamber 2. A PLC controller 29 is fixedly connected to the right side of the bottom support frame 1. A flow guiding component is provided between the front and rear ends of the interior of the denitrification and dust removal chamber 2 to facilitate airflow.

[0025] Please see Figure 1-5 A low-temperature desulfurization and denitrification integrated device also includes a flow guiding component, which includes a horizontal guide plate 9. The horizontal guide plate 9 is fixedly connected between the front and rear ends inside the denitrification and dust removal chamber 2. A side guide plate 8 is welded to the left side of the horizontal guide plate 9, and multiple sets of air guide cylinders 10 are welded to the bottom end of the horizontal guide plate 9.

[0026] The right side of the horizontal guide plate 9 is fixedly connected to the right side of the interior of the denitrification and dust removal chamber 2, and the left side of the side guide plate 8 is fixedly connected to the left side of the interior of the denitrification and dust removal chamber 2. The front and rear ends of the side guide plate 8 and the horizontal guide plate 9 are flush. The front and rear ends of the side guide plate 8 are fixedly connected to the front and rear ends of the interior of the denitrification and dust removal chamber 2, respectively. The vertical center lines of the air guide cylinder 10 and the ceramic fiber filter element shell 22 coincide. The air guide cylinder 10 is in the shape of a trumpet with a larger upper part and a smaller lower part, which can guide air evenly and make full use of each filter element.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, when the flue gas enters the denitrification and dust removal chamber 2, the side guide plate 8 raises the position of the flue gas, causing it to travel between the horizontal guide plate 9 and the horizontal partition plate 15. Since the space between the horizontal guide plate 9 and the horizontal partition plate 15 is small, the air pressure increases, and the gas flows down along the air guide tube 10, making full contact with each set of ceramic fiber filter shells 22.

[0028] A flange pipe 17 is connected to the right flange of the gas outlet pipe 16. A gas sensor 18 is fixedly connected to the top of the flange pipe 17. A sensor host 19 is fixedly connected to the top of the gas sensor 18. An audible and visual alarm 20 is fixedly connected to the right side of the sensor host 19. The bottom end of the gas sensor 18 extends through the top of the flange pipe 17 and into the interior. The gas sensor 18, the sensor host 19, and the audible and visual alarm 20 are electrically connected and can monitor the gas composition.

[0029] Specifically, such as Figure 1 and Figure 3 As shown, when the gas passes through the flange pipe 17 on the side of the gas outlet pipe 16, the gas sensor 18 senses its composition, and the audible and visual alarm 20 on the side of the sensor host 19 sounds an alarm to remind the staff to perform timely maintenance. The specific model of the gas sensor 18 is SK / MIC-600. The gas sensor 18, the sensor host 19, and the audible and visual alarm 20 are electrically connected. This technology is existing technology and will not be described in detail.

[0030] The bottom of the ceramic fiber filter cartridge 22 is threadedly connected to a bottom hollow shell 25. The outer ring of the top of the bottom hollow shell 25 is fixedly connected to an inner threaded ring 26, and the inner ring of the top of the bottom hollow shell 25 is fixedly connected to an outer threaded ring 28. Multiple sets of collecting holes 27 are opened at the top of the bottom hollow shell 25. A catalyst overflow pipe 24 is provided below the bottom hollow shell 25. The internal thread of the inner threaded ring 26 matches the external thread of the ceramic fiber filter cartridge 22, and the external thread of the outer threaded ring 28 matches the internal thread of the porous ceramic liner 23. The catalyst overflow pipe 24 and the bottom hollow shell 25 are connected by a hose to collect the overflowing catalyst.

[0031] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, the overflowing catalyst is blocked by the internal threaded ring 26 and the external threaded ring 28. The overflowing catalyst flows into the bottom hollow shell 25 along the collecting hole 27 and is discharged through the catalyst overflow pipe 24.

[0032] The computer software involved in the PLC controller and other hardware carriers in this technical solution is software technology known to those skilled in the art. It is merely applied to the aforementioned hardware carriers. In other words, the computer software involved in this solution is an essential technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for the technical problem solved by this application, but it is not a differentiating technical feature (not a point of technical improvement). The applicant has not made any technical improvements to the computer software involved in the aforementioned hardware carriers, nor is it a key technical point of the invention.

[0033] Therefore, the "PLC controller", "gas sensor", "sensor host", "audio-visual alarm" and other components involved in this application are all physical functional modules that combine existing computer software programs or protocols with the hardware carrier of this application. The computer software programs involved in these physical functional modules are technologies known to those skilled in the art and are not improvements of this application. The improvement of this application should be the interaction between the various physical functional modules, that is, the improvement of the overall structure of the low-temperature desulfurization and denitrification integrated device of this application, so as to solve the corresponding technical problems to be solved by this application.

[0034] Working principle: When this utility model is in use, firstly, flue gas enters the desulfurization tower 4 through the air inlet 5, and the powdered desulfurization catalyst enters through the powdered desulfurizing agent inlet 6. It mixes and desulfurizes the flue gas in the desulfurization tower 4. The mixed flue gas enters the denitrification and dust removal chamber 2 along the air guide pipe 7. The ceramic fiber filter shell 22 intercepts the dust, and the denitrification catalyst impregnated in the porous ceramic lining 23 reacts with the gas to reduce it to nitrogen and water. When the flue gas enters the denitrification and dust removal chamber 2, the side guide plate 8 raises the position of the flue gas, so that it travels between the horizontal guide plate 9 and the horizontal partition plate 15. Since the space between the horizontal guide plate 9 and the horizontal partition plate 15 is small, the air pressure increases, and the gas goes down along the air guide pipe 10, so that it can fully contact each set of ceramic fiber filter shells 22. After passing through the ceramic fiber filter housing 22, the gas collects at the top of the denitrification and dust removal chamber 2 and is discharged through the outlet pipe 16. When the gas passes through the flange pipe 17 on the side of the outlet pipe 16, the gas sensor 18 detects its composition, and the audible and visual alarm 20 on the side of the sensor host 19 sounds an alarm to remind the staff to carry out timely maintenance. The catalyst is injected from the denitrification agent replenishment pipe 21, fully impregnating the porous ceramic liner 23. The overflowing catalyst is blocked by the internal thread ring 26 and the external thread ring 28, and the overflowing catalyst flows along the collection hole 27 into the bottom hollow shell 25, and is discharged through the catalyst overflow pipe 24.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-temperature desulfurization and denitrification integrated device, comprising a bottom support frame (1), characterized in that: A denitrification and dust removal chamber (2) is fixedly connected to the right side of the top of the bottom support frame (1). Two sets of ash hoppers (3) are welded to the bottom of the denitrification and dust removal chamber (2). A desulfurization tower (4) is fixedly connected to the left side of the top of the bottom support frame (1). An air inlet (5) is provided at the bottom of the left side of the desulfurization tower (4). A powdered desulfurizing agent inlet (6) is provided at the middle position of the left side of the desulfurization tower (4). A gas guide pipe (7) is fixedly connected between the denitrification and dust removal chamber (2) and the desulfurization tower (4). A horizontal partition (15) is fixedly connected between the two sides inside the denitrification and dust removal chamber (2). Multiple sets of ceramic fiber filter element shells (22) are threaded to the bottom of the horizontal partition (15). The interior of the ceramic fiber filter element shell (22) The cavity is filled with a porous ceramic liner (23). A denitrification agent replenishment pipe (21) is provided above the ceramic fiber filter shell (22). An air bag (12) is fixedly connected to the left side of the top of the denitrification and dust removal chamber (2). A pulse air pipe (13) is provided above the partition plate (15). A pulse valve (11) is provided between the air bag (12) and the pulse air pipe (13). Multiple sets of nozzles (14) are fixedly connected to the bottom end of the pulse air pipe (13). An air outlet pipe (16) is fixedly connected to the top right side of the denitrification and dust removal chamber (2). A PLC controller (29) is fixedly connected to the right side of the bottom support frame (1). A flow guiding component is provided between the front and rear ends of the interior of the denitrification and dust removal chamber (2) to facilitate airflow. The flow guiding assembly includes a horizontal guide plate (9), which is fixedly connected between the front and rear ends inside the denitrification and dust removal chamber (2). A side guide plate (8) is welded to the left side of the horizontal guide plate (9), and multiple sets of air guide cylinders (10) are welded to the bottom end of the horizontal guide plate (9).

2. The integrated low-temperature desulfurization and denitrification device according to claim 1, characterized in that: The right side of the horizontal guide plate (9) is fixedly connected to the right side inside the denitrification and dust removal chamber (2), and the left side of the side guide plate (8) is fixedly connected to the left side inside the denitrification and dust removal chamber (2).

3. The integrated low-temperature desulfurization and denitrification device according to claim 1, characterized in that: The front and rear ends of the side guide plate (8) and the horizontal guide plate (9) are flush, and the front and rear ends of the side guide plate (8) are fixedly connected to the front and rear ends of the denitrification and dust removal chamber (2) respectively.

4. The integrated low-temperature desulfurization and denitrification device according to claim 1, characterized in that: The vertical center lines of the air guide tube (10) and the ceramic fiber filter shell (22) coincide, and the air guide tube (10) is in the shape of a trumpet with a larger upper part and a smaller lower part.

5. The integrated low-temperature desulfurization and denitrification device according to claim 1, characterized in that: The right flange of the gas outlet pipe (16) is connected to a flange pipe (17). A gas sensor (18) is fixedly connected to the top of the flange pipe (17). A sensor host (19) is fixedly connected to the top of the gas sensor (18). An audible and visual alarm (20) is fixedly connected to the right side of the sensor host (19). The bottom end of the gas sensor (18) extends through the top of the flange pipe (17) and into the interior. The gas sensor (18), sensor host (19), and audible and visual alarm (20) are electrically connected.

6. The integrated low-temperature desulfurization and denitrification device according to claim 1, characterized in that: The bottom end of the ceramic fiber filter cartridge (22) is threadedly connected to a bottom hollow shell (25). The outer ring of the top of the bottom hollow shell (25) is fixedly connected to an inner threaded ring (26). The inner ring of the top of the bottom hollow shell (25) is fixedly connected to an outer threaded ring (28). The top of the bottom hollow shell (25) has multiple sets of collecting holes (27). A catalyst overflow pipe (24) is provided below the bottom hollow shell (25). The internal thread of the inner threaded ring (26) matches the external thread of the ceramic fiber filter cartridge (22). The external thread of the outer threaded ring (28) matches the internal thread of the porous ceramic liner (23). The catalyst overflow pipe (24) and the bottom hollow shell (25) are connected by a flexible hose.

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