Desulfurizing tower with structure for prolonging residence time of flue gas
By introducing delay components and automatic cleaning mechanisms into the desulfurization tower, the problems of easy filter clogging and short flue gas retention time are solved, more efficient flue gas treatment and automated cleaning that reduces manual cleaning are achieved, thereby improving the practicality of the equipment.
Patent Information
- Application Number
- CN202422747945.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The filter screens in existing desulfurization towers are prone to clogging, which results in reduced filtration efficiency and short flue gas retention time, affecting treatment results. Frequent manual cleaning is also required, increasing labor intensity.
A desulfurization tower with a delay component is designed to extend the flue gas residence time through the delay component, and is equipped with an automatic cleaning mechanism, including a cleaning mechanism and a knocking component, to achieve automatic cleaning of the filter.
It effectively prolongs the contact time between flue gas and desulfurizer, improves the treatment effect, reduces the labor intensity of manual filter cleaning, and enhances the practicality of the equipment.
Smart Images
Figure CN223299797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a desulfurization tower with a structure for extending the residence time of flue gas. Background Art
[0002] Calcium-based SDS desulfurization technology is a highly efficient flue gas desulfurization method that primarily uses a highly active calcium-based desulfurizer to remove sulfur dioxide. This technology boasts mature technology, simple equipment, flexible operation, and excellent treatment results, making it widely used in flue gas desulfurization. The basic principle of calcium-based SDS desulfurization technology is to add an active calcium desulfurizer, such as calcium hydroxide, to the flue gas. Operating under normal temperature and pressure or pressurized conditions, this technology converts sulfur dioxide in the flue gas into sulfides. These sulfides then react with the active calcium to form calcium sulfate, thereby achieving the desulfurization goal.
[0003] Before the flue gas is passed into the desulfurization tower for treatment, a filter is installed at the air inlet where the flue gas passes to filter out impurities in the flue gas to prevent particles in the flue gas from entering the desulfurization tower and adhering to its inner wall. The filter will become clogged after long-term use, thus affecting the filtering effect. Most desulfurization tower equipment lacks a structure that can automatically clean and prevent the filter from being blocked, and workers are required to disassemble and clean it at regular intervals, which increases the labor intensity of the staff. In addition, most desulfurization towers usually directly pass the filtered flue gas into the tower for reaction and desulfurization, and then directly discharge the flue gas. In this way, the flue gas stays in the tower for a short time, so that its contact and reaction with the reaction liquid is insufficient, thereby affecting its treatment effect and its practicality is relatively poor. Utility Model Content
[0004] The purpose of the utility model is to provide a desulfurization tower with a structure for extending the residence time of flue gas, so as to solve the problems raised in the prior art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a desulfurization tower with a structure for extending the residence time of flue gas, comprising a desulfurization tower main body, an air inlet provided on one side of the desulfurization tower main body, a filter box connected to one side of the air inlet, two filter screens provided in the filter box, a cleaning mechanism provided under the filter box, a frame provided on the top of the filter box, a telescopic rod provided on the top of the frame, the telescopic end of the telescopic rod is connected to a support rod in the frame, the search support rod is connected to the two filter screens through two connecting rod distribution plates, partition one and partition two are provided in sequence in the upper and lower parts of the desulfurization tower main body, and through grooves are provided on the tops of partition one and partition two, a desulfurizer pipe is provided inside the partition one, and one end of the desulfurizer pipe extends outside the desulfurization tower main body, a plurality of SDS spray heads connected to the desulfurizer pipe are provided at the bottom of the partition one, and a delay component is provided between the partition one and the partition two.
[0006] Furthermore, the cleaning mechanism includes a cleaning table, which is fixedly installed on one side of the desulfurization tower body, and the cleaning table is located below the filter box. A motor is fixedly installed at the bottom of the cleaning table, and a reciprocating screw is rotatably installed between the cleaning table and the filter box, and the lower end of the reciprocating screw is fixedly connected to the output end of the motor. A guide rod is symmetrically provided on the outside of the reciprocating screw at the top of the cleaning table, and a matching sleeve is provided on the outside of the reciprocating screw to provide a movably connected brush seat, and both ends of the brush seat are respectively slidably sleeved on the outside of the guide rod. A number of bristles are provided on both sides of the brush seat, and a knocking assembly is provided in the brush seat. A screening net is provided above the partition in the desulfurization tower body. The setting of the cleaning mechanism can drive the brush seat to move up and down, so that the bristles on it can clean the impurities in the flue gas filtered on the filter screens on both sides to avoid clogging. The filter screen can be automatically cleaned, which reduces the labor intensity of the staff and is more practical.
[0007] Furthermore, the knocking assembly includes a crankshaft, and there are several crankshafts. Two groups of symmetrically arranged chambers are symmetrically opened in the brush holder, and several crankshafts are rotatably installed in the chambers. Two groups of symmetrically arranged drive chambers are symmetrically opened in the brush holder, one end of the crankshaft is connected to a gear in the drive chamber, and the outer wall of the guide rod is symmetrically opened with several tooth grooves meshing with the gear. The concave part of the crankshaft is hinged with a push rod through a connecting piece, and one end of the push rod is connected to a knocking head outside the brush holder. The setting of the knocking assembly can continuously drive the knocking head to knock on the filter screen on one side while the brush holder moves up and down, thereby shaking off dust on it, etc., to improve the cleaning effect.
[0008] Furthermore, the delay component includes a flow extension plate, and there are several flow extension plates, and several of the flow extension plates are equidistantly distributed between partition one and partition two. A smoke flow port is opened on one side of the flow extension plate, and several of the smoke flow ports are distributed in an upper and lower alternating manner. Several flow extension grooves are equidistantly opened on one side of the flow extension plate, and an inclined guide plate 4 is provided above the lower end opening of the flow extension groove, and the guide plate 4 is fixedly connected to the flow extension plate. The setting of the delay component can make part of the flue gas flow through the flow extension groove and then flow back when the flue gas passes between several flow extension plates, thereby colliding with another part, thereby reducing its flow velocity, and then prolonging its flue gas retention time, so that it can better contact and react with the desulfurizer sprayed by the SDS spray head, thereby improving the treatment effect.
[0009] Furthermore, the frame is a U-shaped structure, the connecting rod and the filter screen are detachably connected, and a sealing gasket is provided at the connection between the filter screen and the filter box to ensure the sealing between the filter screen and the filter box.
[0010] Furthermore, the plurality of SDS spray heads are respectively located between two adjacent flow extension plates, and the flow extension trough is U-shaped. The guide plate is parallel to a side wall of the opening of the flow extension trough close to the guide plate, so that part of the flue gas flows into the flow extension trough through the guide plate.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] 1. The utility model can work by using the telescopic rod, thereby driving the filter to move down and out of the filter box, and then starting the motor to drive the reciprocating screw rod, thereby driving the brush seat to move up and down, driving the bristles to clean the filter. In conjunction with the knocking component, the tooth groove driving gear on the guide rod can be rotated, thereby driving the knocking head to move back and forth, constantly knocking on one side of the filter to vibrate, shaking off some dust and impurities adhering to it, improving its cleaning effect, thereby avoiding its clogging, and automatically cleaning the filter, reducing the labor intensity of the staff, and being more practical;
[0013] 2. The utility model can slow down the flue gas flow rate entering the desulfurization tower body through the delay component, prolong the retention time of the flue gas, thereby increasing its contact reaction time and improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic structural diagram of the utility model as a whole;
[0015] Figure 2 This is a schematic diagram of the structure between the reciprocating screw rod, guide rod and brush holder of the utility model;
[0016] Figure 3 This utility model Figure 2 Schematic diagram of the top cross-section structure;
[0017] Figure 4 This utility model Figure 1 Schematic diagram of the enlarged structure of A;
[0018] Figure 5 This utility model Figure 3 Schematic diagram of the enlarged structure of B.
[0019] Numbers in the figure: 1. Desulfurization tower body; 2. Filter box; 3. Filter screen; 4. Screening net; 5. Partition one; 6. Partition two; 7. Desulfurizer pipe; 8. Frame; 9. Telescopic rod; 10. Support rod; 11. Connecting rod; 12. Cleaning table; 13. Motor; 14. Reciprocating screw; 15. Guide rod; 16. Brush holder; 17. Crankshaft; 18. Gear; 19. Connector; 20. Push rod; 21. Knocking head; 22. Chamber; 23. Flow extension plate; 24. Guide plate; 25. Flow extension trough. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] Example: Figure 1 - Figure 5As shown, the utility model provides a technical solution: a desulfurization tower with a structure for extending the residence time of flue gas, comprising a desulfurization tower main body 1, an air inlet is provided on one side of the desulfurization tower main body 1, a filter box 2 is connected to one side of the air inlet, two filter screens 3 are provided in the filter box 2, a cleaning mechanism is provided below the filter box 2, a frame 8 is provided on the top of the filter box 2, a telescopic rod 9 is provided on the top of the frame 8, the telescopic end of the telescopic rod 9 is connected to a support rod 10 in the frame 8, the search support rod 10 is connected to the two filter screens 3 through two connecting rods 11 distribution plates, a partition 1 5 and a partition 2 6 are sequentially provided in the upper and lower parts of the desulfurization tower main body 1, and a through groove is provided on the top of the partition 1 5 and the partition 2 6, a desulfurizer pipe 7 is provided inside the partition 1 5, and one end of the desulfurizer pipe 7 extends to the outside of the desulfurization tower main body 1, a plurality of SDS spray heads connected to the desulfurizer pipe 7 are provided at the bottom of the partition 1 5, and a delay component is provided between the partition 1 5 and the partition 2 6. In this example, the cleaning mechanism includes a cleaning table 12, which is fixedly installed on one side of the desulfurization tower body 1, and the cleaning table 12 is located below the filter box 2. A motor 13 is fixedly installed at the bottom of the cleaning table 12, and a reciprocating screw rod 14 is rotatably installed between the cleaning table 12 and the filter box 2, and the lower end of the reciprocating screw rod 14 is fixedly connected to the output end of the motor 13. A guide rod 15 is symmetrically provided on the outside of the reciprocating screw rod 14 at the top of the cleaning table 12, and a movably connected brush seat 16 is matched with the outside of the reciprocating screw rod 14, and the two ends of the brush seat 16 are respectively slidably sleeved on the outside of the guide rod 15. There are some bristles on both sides of the brush seat 16, and a knocking component is provided in the brush seat 16. A screening net 4 is provided above the partition 5 in the desulfurization tower body 1. The setting of the cleaning mechanism can drive the brush seat 16 to move up and down, so that the bristles on it can clean the impurities in the flue gas filtered on the filter screen 3 on both sides to avoid clogging. The filter screen 3 can be automatically cleaned, which reduces the labor intensity of the staff and is more practical. In this example, the knocking assembly includes a crankshaft 17, and there are several crankshafts 17. Two groups of symmetrically arranged chambers 22 are symmetrically opened in the brush holder 16, and several crankshafts 17 are rotatably installed in the chambers 22. Two groups of symmetrically arranged drive chambers are symmetrically opened in the brush holder 16. One end of the crankshaft 17 is connected to a gear 18 in the drive chamber, and the outer wall of the guide rod 15 is symmetrically opened with several tooth grooves engaged with the gear 18. The concave part of the crankshaft 17 is hinged with a push rod 20 through a connecting piece 19, and one end of the push rod 20 is connected to a knocking head 21 outside the brush holder 16. The setting of the knocking assembly can continuously drive the knocking head 21 to knock on the filter 3 on one side while the brush holder 16 moves up and down, thereby shaking off dust on it, etc., thereby improving the cleaning effect.In this example, the delay component includes a flow extension plate 23, and there are several flow extension plates 23. Several flow extension plates 23 are equidistantly distributed between partition 1 5 and partition 2 6. A smoke flow port is opened on one side of the flow extension plate 23, and several smoke flow ports are distributed in an upper and lower alternating manner. Several flow extension grooves 25 are equidistantly opened on one side of the flow extension plate 23. An inclined guide plate 24 is provided above the lower end opening of the flow extension groove 25, and the guide plate 24 is firmly connected to the flow extension plate 23. The setting of the delay component can make part of the flue gas flow through the flow extension groove 25 and then flow back when the flue gas passes between the several flow extension plates 23, thereby colliding with another part, thereby reducing its flow velocity, and then prolonging its flue gas retention time, so that it can better contact and react with the desulfurizer sprayed by the SDS spray head, thereby improving the treatment effect.
[0022] In this example, the frame 8 is a U-shaped structure, with a removable connection between the connecting rod 11 and the filter screen 3. A sealing gasket is provided at the connection between the filter screen 3 and the filter box 2 to ensure a tight seal between the filter screen 3 and the filter box 2. In this example, several SDS sprinkler heads are positioned between two adjacent diversion plates 23, and the diversion trough 25 is U-shaped. The guide plate 24 is parallel to the inner wall of the opening of the diversion trough 25 near the guide plate 24, so that the guide plate 24 can guide the flue gas, allowing some of the flue gas to flow into the diversion trough 25.
[0023] The working principle of the present invention is as follows: when in use, the flue gas to be cleaned is filtered through the filter box 2 and enters the desulfurization tower body 1, and then flows through the through groove on the partition 2 6 to the space between the partition 1 5 and the partition 2 6, and gradually flows through the through groove between the extension plate 23. When flowing through the extension plate 23, the flue gas will be divided into two parts, one part flows into the extension groove 25, and the other part flows normally. The flue gas flowing into the extension groove 25 is guided by the extension groove 25 and the guide plate 24 to form a backflow, so that the flue gas flowing out of the extension groove 25 collides with the other part of the flue gas, thereby slowing it down and reducing its flow rate, thereby prolonging the retention time of the flue gas. At the same time, the desulfurizer pipe 7 is used to transport the desulfurizer, and it is sprayed out through the SDS spray head, so that it contacts and reacts with the flue gas flowing through, thereby achieving desulfurization. When the equipment needs to be cleaned after a period of use, when the equipment is stopped, the telescopic rod 9 can be started to push the support rod 10 to drive the filter 3 connected to it to move downward. The filter screen 3 is moved out to the top of the cleaning table 12 below the filter box 2, and then the motor 13 is started to drive the reciprocating screw rod 14 to rotate, so that the reciprocating screw rod 14 drives the brush holder 16 connected thereto to reciprocate up and down, thereby driving a number of brushes to clean the filter screens 3 on both sides. At the same time, the movement of the brush holder 16 will drive the gear 18, which cooperates with a number of tooth grooves meshing with it, thereby driving the gear 18 to drive the connected crankshaft 17 to rotate, and the crankshaft 17 drives the connecting piece 19, and then drives the push rod 20 to drive the knocking head 21 to reciprocate, so that the knocking head 21 continuously hits the filter screen 3 on one side to vibrate, thereby shaking off the dust and impurities on it, so that it can clean and hit the filter screen 3 at the same time, thereby improving the cleaning effect of the filter screen 3. After cleaning, the motor 13 is stopped, the telescopic rod 9 is started to pull the support rod 10 upward and reset, so that the filter screen 3 is reset and re-enters the filter box 2, and it can be used for filtering again, so that it can automatically clean the filter screen 3, reducing the labor intensity of the staff, and being convenient to use and more practical.
[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
Claims
1. A desulfurization tower with a structure for extending the residence time of flue gas, comprising a desulfurization tower body (1), an air inlet being provided on one side of the desulfurization tower body (1), characterized in that: A filter box (2) is connected to one side of the air inlet, two filter screens (3) are arranged in the filter box (2), a cleaning mechanism is arranged below the filter box (2), a frame (8) is arranged on the top of the filter box (2), a telescopic rod (9) is arranged on the top of the frame (8), the telescopic end of the telescopic rod (9) is connected to a support rod (10) in the frame (8), the search support rod (10) is connected to the two filter screens (3) through two connecting rod (11) distribution plates, a partition plate (5) and a partition plate (6) are arranged in sequence in the desulfurization tower body (1), and the tops of the partition plate (5) and the partition plate (6) are both provided with through grooves, a desulfurizer pipe (7) is arranged inside the partition plate (5), and one end of the desulfurizer pipe (7) extends to the outside of the desulfurization tower body (1), a plurality of SDS spray heads connected to the desulfurizer pipe (7) are arranged at the bottom of the partition plate (5), and a delay component is provided between the partition plate (5) and the partition plate (6).
2. The desulfurization tower with a structure for extending the flue gas residence time according to claim 1, characterized in that: The cleaning mechanism includes a cleaning table (12), the cleaning table (12) is fixedly installed on one side of the desulfurization tower body (1), and the cleaning table (12) is located below the filter box (2). A motor (13) is fixedly installed at the bottom of the cleaning table (12), a reciprocating screw (14) is rotatably installed between the cleaning table (12) and the filter box (2), and the lower end of the reciprocating screw (14) is fixedly connected to the output end of the motor (13), the top of the cleaning table (12) is symmetrically provided with a guide rod (15) on the outside of the reciprocating screw (14), the outside of the reciprocating screw (14) is matched with a movably connected brush seat (16), and the two ends of the brush seat (16) are respectively slidably sleeved on the outside of the guide rod (15), and a number of bristles are provided on both sides of the brush seat (16), and a knocking component is provided in the brush seat (16). A screening net (4) is provided above the partition (5) inside the desulfurization tower body (1).
3. The desulfurization tower with a structure for extending the flue gas residence time according to claim 2, characterized in that: The knocking assembly includes a crankshaft (17), and a plurality of crankshafts (17) are provided. Two groups of chambers (22) symmetrically arranged on the left and right are symmetrically opened in the brush holder (16). The plurality of crankshafts (17) are rotatably installed in the chambers (22). Two groups of drive chambers symmetrically arranged on the left and right are symmetrically opened in the brush holder (16). One end of the crankshaft (17) is connected to a gear (18) in the drive chamber. The outer wall of the guide rod (15) is symmetrically provided with a plurality of tooth grooves meshing with the gear (18). The concave part of the crankshaft (17) is hinged with a push rod (20) through a connecting piece (19). One end of the push rod (20) is connected to a knocking head (21) outside the brush holder (16).
4. The desulfurization tower with a structure for extending the flue gas residence time according to claim 1, characterized in that: The delay assembly includes a flow extension plate (23), and a plurality of flow extension plates (23) are provided. The plurality of flow extension plates (23) are equidistantly distributed between partition plate 1 (5) and partition plate 2 (6). A smoke flow outlet is provided on one side of the flow extension plate (23), and the plurality of smoke flow outlets are distributed in an upper and lower alternating manner. A plurality of flow extension grooves (25) are equidistantly provided on one side of the flow extension plate (23), and an inclined guide plate (24) is provided above the lower end opening of each flow extension groove (25), and the guide plate (24) is fixedly connected to the flow extension plate (23).
5. The desulfurization tower with a structure for extending the flue gas residence time according to claim 3, characterized in that: The frame (8) is a U-shaped structure, the connecting rod (11) and the filter screen (3) are detachably connected, and a sealing gasket is provided at the connection between the filter screen (3) and the filter box (2).
6. The desulfurization tower with a structure for extending the residence time of flue gas according to claim 4, characterized in that: The plurality of SDS spray heads are respectively located between two adjacent extension plates (23), and the extension trough (25) is U-shaped. The guide plate (24) is parallel to a side wall of the opening of the extension trough (25) close to the guide plate (24).