Coking flue gas desulfurization and denitrification device
By introducing conical baffles and movable rod structures into the coking flue gas desulfurization and denitrification unit, the problem of ammonia byproducts clogging the pipeline was solved, enabling smooth flue gas reaction and convenient catalyst cleaning, thus improving the desulfurization and denitrification effect.
Patent Information
- Application Number
- CN202520356360.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In existing coking flue gas desulfurization processes, ammonia gas mixed with flue gas can easily produce solid or liquid byproducts, leading to pipeline blockage and affecting the desulfurization and denitrification effects.
A desulfurization and denitrification device for coking flue gas was designed, comprising a flue gas connection pipe, a denitrification chamber, a desulfurization chamber, and an SCR catalyst plate. The device utilizes a combination of conical baffles and movable insert rods to prevent byproducts from clogging the gas outlet pipe, and facilitates the cleaning of the SCR catalyst plate through a retrieval cabinet door.
It effectively prevents blockage of the exhaust pipe, ensures smooth flue gas reaction, and improves the efficiency of desulfurization and denitrification and the service life of the catalyst.
Smart Images
Figure CN223861624U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flue gas purification equipment technical field, especially relates to a coking flue gas desulfurization and denitrification device. BACKGROUND
[0002] At present, flue gas desulfurization is the domestic industrial industry large-scale application and the effect is better desulfurization method, and its desulfurization principle is: through alkaline absorbent capture the SO2 gas contained in flue gas, after absorption reaction conversion is relatively stable sulfide or elemental sulfur, through mechanical separation from the flue gas system and is removed, thereby achieving the purpose of desulfurization, according to sulfide absorbent and byproduct's form, desulfurization technology can be divided into wet desulfurization, dry desulfurization and adsorption catalytic oxidation three categories, usually alkaline absorbent mostly adopts ammonia can realize together with sulfur, nitrate absorption reaction.
[0003] However, when ammonia is injected into flue gas, solid or liquid byproducts are easily produced, which can easily cause the byproducts to drop onto the ammonia supply pipeline and block the pipeline, affecting the subsequent desulfurization and denitrification effect. CONTENT OF THE UTILITY MODEL
[0004] In view of the above technical problems, the utility model provides a coking flue gas desulfurization and denitrification device.
[0005] In order to realize the above purpose, the technical scheme of the utility model is as follows:
[0006] A coking flue gas desulfurization and denitrification device, comprising: a flue gas butt joint pipe, a denitration bin and a desulfurization bin, the flue gas butt joint pipe is connected with the denitration bin, the denitration bin is connected with the desulfurization bin, wherein one side of the desulfurization bin is provided with an air inlet pipe, the air inlet pipe is connected with a gas distribution circular pipe in the desulfurization bin, an annular array of air outlet pipes is arranged on the upper surface of the gas distribution circular pipe, a conical baffle is arranged above the air outlet pipes, a movable insertion rod is arranged on the lower surface of the conical baffle, and the movable insertion rod is inserted into a receiving sleeve on the upper surface of the air outlet pipe.
[0007] A spring is connected between the movable insertion rod and the receiving sleeve.
[0008] An SCR catalyst plate is arranged in the denitration bin, and an extension supporting plate is arranged on each side wall of the denitration bin, a spring is arranged on the inner side of the extension supporting plate, a pressing plate is arranged on the spring, and the SCR catalyst plate is arranged between the two pressing plates.
[0009] A piece taking cabinet door is arranged on one side end of the denitration bin, and a dust remover is connected between the denitration bin and the desulfurization bin.
[0010] The piece taking cabinet door is rotatably connected with the denitration bin, and a sealing gasket is arranged on one side of the piece taking cabinet door.
[0011] The smoke gas butt joint pipe is connected with the flow guide pipe between the denitration bin, the upper surface of the desulfurization bin is provided with a smoke gas exhaust pipe, and the inside of the smoke gas butt joint pipe is provided with a gas supply pipe.
[0012] The outer diameter size length of the movable plug rod is less than the inner diameter size length of the receiving sleeve, and the movable plug rod is fixedly connected with the receiving sleeve through the spring.
[0013] The utility model discloses beneficial effect is:
[0014] 1、ammonia whole body promotes conical baffle to move upwards, so that the movable plug rod of the lower end of conical baffle moves upwards from the inside of receiving sleeve, and the spring inside is stretched and deformed, and the gap between the gas outlet pipe and conical baffle can be left after reaction with flue gas, and the byproduct generated in reaction can fall into the inside of desulfurization bin under the flow guiding effect of conical baffle, preventing the gas outlet pipe from being blocked.
[0015] 2、The whole piece taking cabinet door can be rotated on the outside of the denitration bin, and when the whole piece taking cabinet door is limited on the outside of the denitration bin, the SCR catalyst plate can be pressed into the inside of the extension supporting plate, the spring is compressed and deformed by the extrusion plate, and when the whole piece SCR catalyst plate is used with too much impurities, the whole piece SCR catalyst plate can be conveniently taken out for cleaning, so that the catalytic reaction efficiency is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0016] The specific embodiment of the utility model will be further described in detail in combination with the drawings.
[0017] Figure 1 It is the structural schematic diagram of the utility model;
[0018] Figure 2 It is the structural schematic diagram of the utility model in cloth gas round pipe;
[0019] Figure 3 It is the enlarged view of the utility model in gas outlet pipe;
[0020] Figure 4 It is the inside schematic diagram of the utility model in denitration bin;
[0021] Figure 5 It is the sectional view of the whole device in the utility model.
[0022] In the drawing: 1, smoke gas butt joint pipe; 2, denitration bin; 3, dust remover; 4, desulfurization bin; 5, flow guide pipe; 6, gas inlet pipe; 7, smoke gas exhaust pipe; 8, piece taking cabinet door; 9, cloth gas round pipe; 10, gas outlet pipe; 201, extension supporting plate; 202, extrusion plate; 203, spring; 204, SCR catalyst plate; 1001, conical baffle; 1002, movable plug rod; 1003, receiving sleeve. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0024] like Figures 1 to 5 As shown, a desulfurization and denitrification device for coking flue gas includes: a flue gas connection pipe 1, a denitrification chamber 2, and a desulfurization chamber 4. The flue gas connection pipe 1 is connected to the denitrification chamber 2, and the denitrification chamber 2 is connected to the desulfurization chamber 4. An inlet pipe 6 is installed on one side of the desulfurization chamber 4, and the inlet pipe 6 is connected to a gas distribution pipe 9 inside the desulfurization chamber 4. An outlet pipe 10 is arranged in a ring array on the upper surface of the gas distribution pipe 9. A conical baffle 1001 is provided above the outlet pipe 10, and a movable insert rod 1002 is installed on the lower surface of the conical baffle 1001. The movable insert rod 1002 is inserted into a receiving sleeve 1003 on the upper surface of the outlet pipe 10. A spring connects the movable insert rod 1002 and the receiving sleeve 1003. The denitrification chamber 2 is internally equipped with an SCR catalyst plate 204. Extension support plates 201 are respectively installed on the side walls of the denitrification chamber 2. Springs 202 are installed on the inner side of the extension support plates 201, and compression plates 203 are mounted on the springs 202. The SCR catalyst plate 204 is installed between the two compression plates 203. A retrieval cabinet door 8 is installed on one side of the denitrification chamber 2. A dust collector 3 connects the denitrification chamber 2 and the desulfurization chamber 4. The retrieval cabinet door 8 is rotatably connected to the denitrification chamber 2, and a sealing gasket is installed on one side of the retrieval cabinet door 8. A guide pipe 5 connects the flue gas connecting pipe 1 to the denitrification chamber 2. A flue gas discharge pipe 7 is installed on the upper surface of the desulfurization chamber 4, and a gas supply pipe is installed inside the flue gas connecting pipe 1. The outer diameter of the movable insertion rod 1002 is smaller than the inner diameter of the receiving sleeve 1003, and the movable insertion rod 1002 is fixedly connected to the receiving sleeve 1003 by the spring.
[0025] The working principle of the utility model is: when using, the flue gas is connected with the flue gas butt joint pipe 1, and then passes through the denitration bin 2 and the dust remover 3 and flows into the inside of the desulfurization bin 4, the gas supply pipe in the flue gas butt joint pipe 1 can inject ammonia into the entering flue gas, the ammonia mixes with the flue gas and is transmitted to the position of the SCR catalyst plate 204 in the inside of the denitration bin 2, under the action of the SCR catalyst plate 204, the NOx in the flue gas is decomposed into N2 and water, then the whole flue gas passes through the denitration bin 2 and is transmitted to the inside of the dust remover 3, the dust in the inside of the flue gas is adsorbed by the bag type dust removal mechanism in the inside of the dust remover 3, then the flue gas is injected into the inside of the desulfurization bin 4 again, after the flue gas enters the inside of the desulfurization bin 4, ammonia is injected into the inside of the gas distribution circular pipe 9 by the air inlet pipe 6, the ammonia reacts with the sulfur dioxide to generate ammonium sulfite, and then oxidizes to generate ammonium sulfate, the sulfur dioxide in the flue gas is treated, the ammonia in the inside of the gas distribution circular pipe 9 is blown upward from the position of the air outlet pipe 10, the gas pushes the conical baffle 1001 to move upward, the movable inserting rod 1002 at the lower end of the conical baffle 1001 moves upward from the inside of the storage sleeve 1003, the spring in the inside is stretched and deformed, the gap between the air outlet pipe 10 and the conical baffle 1001 is left for the reaction with the flue gas, the byproduct generated in the reaction falls into the inside of the desulfurization bin 4 under the guiding action of the conical baffle 1001, and the air outlet pipe 10 is prevented from being blocked.
[0026] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A desulfurization and denitrification device for coking flue gas, comprising: The flue gas connecting pipe (1), the denitrification chamber (2), and the desulfurization chamber (4) are characterized in that the flue gas connecting pipe (1) is connected to the denitrification chamber (2), and the denitrification chamber (2) is connected to the desulfurization chamber (4). An air inlet pipe (6) is installed on one side of the desulfurization chamber (4). The air inlet pipe (6) is connected to the gas distribution pipe (9) inside the desulfurization chamber (4). An air outlet pipe (10) is installed in a ring array on the upper surface of the gas distribution pipe (9). A conical baffle (1001) is provided above the air outlet pipe (10). A movable insert rod (1002) is installed on the lower surface of the conical baffle (1001). The movable insert rod (1002) is inserted into the receiving sleeve (1003) on the upper surface of the air outlet pipe (10).
2. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that, A spring connects the movable insert (1002) to the storage sleeve (1003).
3. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that, The denitrification chamber (2) is equipped with an SCR catalyst plate (204) inside. Extension support plates (201) are respectively provided on the two side walls of the denitrification chamber (2). A spring (202) is provided on the inner side of the extension support plate (201). An extrusion plate (203) is installed on the spring (202). The SCR catalyst plate (204) is installed between the two extrusion plates (203).
4. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that, A pickup cabinet door (8) is installed on one side of the denitrification chamber (2), and a dust collector (3) is connected between the denitrification chamber (2) and the desulfurization chamber (4).
5. A coking flue gas desulfurization and denitrification device according to claim 4, characterized in that, The cabinet door (8) is rotatably connected to the denitrification chamber (2), and a sealing gasket is installed on one side of the cabinet door (8).
6. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that, A guide pipe (5) is connected between the flue gas connecting pipe (1) and the denitrification chamber (2). A flue gas discharge pipe (7) is installed on the upper surface of the desulfurization chamber (4). A gas supply pipe is installed inside the flue gas connecting pipe (1).
7. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that, The outer diameter of the movable insert (1002) is smaller than the inner diameter of the storage sleeve (1003), and the movable insert (1002) is fixedly connected to the storage sleeve (1003) by a spring.