A fixed-bed dry desulfurization, denitrification and dust removal integrated treatment system

Abstract

This invention relates to a fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system. Its features include an outer cylinder, a desulfurization body, a denitrification body, a flue gas inlet pipe, and a flue gas outlet pipe. The outer cylinder is horizontally positioned and rotatably connected to a fixed base. A first guide wheel to assist the rotation of the outer cylinder is provided within the fixed base. Two first support plates and two second support plates are horizontally positioned within the outer cylinder, with the two second support plates directly below the two first support plates. The two first support plates are positioned opposite each other, and each of their facing sidewalls has several first support wheels. Similarly, the two second support plates are positioned opposite each other, and each of their facing sidewalls has several second support wheels. This design has the advantages of simple structure, ease of manufacture, and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of flue gas desulfurization and denitrification technology, specifically to a fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system. Background Technology

[0002] Dry desulfurization and denitrification, also known as dry flue gas desulfurization and denitrification, refers to the use of powdered or granular absorbents, adsorbents, or catalysts to remove sulfur-containing gases from flue gas. Its advantages include a simple process, no wastewater or acid treatment issues, low energy consumption, and, most importantly, a higher flue gas temperature after purification, which facilitates chimney exhaust diffusion and prevents white smoke production. The purified flue gas does not require secondary heating and has low corrosiveness. Dry desulfurization and denitrification achieves high purification levels and can remove organic sulfur and nitrates. However, dry desulfurization and denitrification agents cannot be regenerated or regeneration is very difficult, and the sulfur and nitrate capacities are limited. To extend the operating cycle, multi-tower series and parallel processes are required. The desulfurization and denitrification equipment is large, requiring significant investment and floor space. When malfunctions occur, it is inconvenient for operators to inspect and maintain it. The operation requires high technical skills and is labor-intensive, making it difficult to ensure the safe operation of the desulfurization and denitrification equipment in a timely manner.

[0003] Currently, the dry fixed-bed adsorption devices on the market have simple structures, large footprints, and small filling volumes, making them unsuitable for projects with limited site area. Summary of the Invention

[0004] To address the aforementioned problems, this invention presents a fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system. By disassembling and assembling the arc-shaped grid plate and sealing cover plate during the rotation of the outer cylinder, the desulfurizing agent and denitrifying agent can be quickly replaced, ensuring the desulfurization and denitrification effects and enhancing practicality.

[0005] To solve the above-mentioned technical problems, the present invention provides a fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system, characterized in that it includes an outer cylinder, a desulfurization body, a denitrification body, a flue gas inlet pipe, and a flue gas outlet pipe. The outer cylinder is horizontally arranged and rotatably connected to a fixed base. The fixed base is provided with a first guide wheel to assist the rotation of the outer cylinder. Two first support plates and two second support plates are horizontally arranged inside the outer cylinder. The two second support plates are located directly below the two first support plates. The two first support plates are arranged opposite each other, and each of their opposite sidewalls is provided with a plurality of first support wheels. The two second support plates are arranged opposite each other, and each of their opposite sidewalls is provided with a plurality of first support wheels. The desulphurizing body and the desulfurizing body are both semi-cylindrical. The front and rear side walls of the lower end of the desulphurizing body are provided with a first U-shaped groove that matches the first support wheel. The desulphurizing body is slidably connected between two first support plates through the cooperation of the first U-shaped groove and the first support wheel. The front and rear side walls of the upper end of the desulfurizing body are provided with a second U-shaped groove that matches the second support wheel. The desulfurizing body is slidably connected between two second support plates through the cooperation of the second U-shaped groove and the second support wheel. The flue gas inlet pipe is provided on the side wall of the right end of the desulfurizing body, and the flue gas outlet pipe is provided on the side wall of the left end of the desulphurizing body. The top of the left end of the desulfurizing body is connected to the bottom of the right end of the desulphurizing body through a pipe assembly.

[0006] Furthermore: a secondary dust filter and a denitrification filter are arranged sequentially from left to right within the denitrification body, and a desulfurization filter and a primary dust filter are arranged sequentially from left to right within the desulfurization body. One end of the pipeline assembly is connected to the top of the desulfurization body on the left side of the desulfurization filter, and the other end of the pipeline assembly is connected to the bottom of the denitrification body on the right side of the denitrification filter.

[0007] Furthermore: both the desulfurization filter and the denitrification filter have a honeycomb structure. One end of the honeycomb structure has several filter holes, and the other end is open. The honeycomb structure of the desulfurization filter is filled with a desulfurization catalyst. The left end of the desulfurization body is detachably connected to a first arc-shaped grid plate. The first arc-shaped grid plate extends into the desulfurization body and is connected to the open end of the honeycomb structure of the desulfurization filter. The desulfurization catalyst is confined within the honeycomb structure by the first arc-shaped grid plate. The honeycomb structure of the denitrification filter is filled with a denitrification catalyst. The right end of the denitrification body is detachably connected to a second arc-shaped grid plate. The second arc-shaped grid plate extends into the denitrification body and is connected to the open end of the honeycomb structure of the denitrification filter. The denitrification catalyst is confined within the honeycomb structure by the second arc-shaped grid plate.

[0008] Furthermore: a first catalyst addition and discharge port is provided at the bottom of the left end of the desulfurization body, directly opposite the desulfurization filter. The first catalyst addition and discharge port is sealed by a first sealing cover plate. A first notch is provided on the outer cylinder body relative to the first sealing cover plate. A second catalyst addition and discharge port is provided at the top of the right end of the desulfurization body, directly opposite the desulfurization filter. The second catalyst addition and discharge port is sealed by a second sealing cover plate. A second notch is provided on the outer cylinder body relative to the second sealing cover plate.

[0009] Furthermore: a fixing plate is provided at the left end of the desulfurization body and the right end of the denitrification body. A locking plate is connected to the right end of the first arc-shaped grid plate and the left end of the second arc-shaped grid plate. A first threaded hole is provided on the fixing plate. A locking hole is provided on the locking plate directly opposite the first threaded hole. A locking rod is connected in the first threaded hole. An external thread matching the first threaded hole is provided on the outer wall of the locking rod. One end of the locking rod passes through the first threaded hole and connects to the locking hole.

[0010] Furthermore: a first auxiliary traveling pulley is provided at the bottom of the desulfurization body on the right side of the first notch, and a second auxiliary traveling pulley is provided at the top of the desulfurization body on the left side of the second notch. Both the first and second auxiliary traveling pulleys are in contact with the inner wall of the outer cylinder.

[0011] Furthermore: At the bottom of each end of the outer cylinder on both sides of the fixed base, a first notch is provided; on the inner wall of the outer cylinder to the right of the first notch, a first auxiliary pulley is provided; and on the inner wall of the outer cylinder to the left of the second notch, a second auxiliary pulley is provided. The first auxiliary pulley contacts the bottom of the desulfurization body, and the second auxiliary pulley contacts the top of the desulfurization body. A support base is provided, with an arc-shaped groove at the top that matches the outer cylinder. A second guide wheel to assist the rotation of the outer cylinder is provided within the arc-shaped groove.

[0012] Furthermore, a rotary drive mechanism is also provided between the support base and the outer cylinder. The rotary drive mechanism includes a servo motor, a drive gear, and an annular toothed portion on the left end face of the outer cylinder, all mounted on the support base on the left side of the fixed base. The drive gear is fixedly mounted on the output shaft of the servo motor, and the drive gear meshes with the annular toothed portion.

[0013] Furthermore: the pipeline assembly consists of a first pipeline, a second pipeline, and a connecting pipeline. One end of the first pipeline is installed at the top of the left end of the desulfurization body via a first flange and is connected to the outlet of the desulfurization body. One end of the second pipeline is installed at the bottom of the right end of the desulfurization body via a second flange and is connected to the inlet of the desulfurization body. Both ends of the connecting pipeline are provided with internal threads. The other ends of the first pipeline and the second pipeline are provided with second external threads that match the internal threads. Both ends of the connecting pipeline are detachably connected to the first pipeline and the second pipeline respectively through the cooperation of the second external threads and the internal threads.

[0014] With the above structure, this invention enables the rapid replacement of desulfurizing and denitrifying agents during the outer cylinder rotation process by disassembling and assembling the arc-shaped grid plate and sealing cover, ensuring the desulfurization and denitrification effects and increasing practicality. Moreover, if the desulfurizing or denitrifying body malfunctions, it can be disassembled separately and transported via auxiliary walking pulleys, facilitating subsequent maintenance. Furthermore, this design also has the advantages of simple structure, ease of manufacture, and high efficiency. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 for Figure 1 A magnified view of A in the middle.

[0018] Figure 3 for Figure 1 A magnified view of B in the middle. Detailed Implementation

[0019] like Figure 1The illustrated fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system includes an outer cylinder 1, a desulfurization body 4, a denitrification body 5, a flue gas inlet pipe 9, and a flue gas outlet pipe 10. The outer cylinder is horizontally arranged and rotatably connected to a fixed base 2. A first guide wheel to assist the rotation of the outer cylinder is provided within the fixed base. Two first support plates 7 and two second support plates 8 are horizontally arranged within the outer cylinder. The two second support plates are located directly below the two first support plates. Several first support wheels are provided on the sidewalls of the two first support plates facing each other, and several second support wheels are provided on the sidewalls of the two second support plates facing each other. The desulphurizing body and the desulfurizing body are both semi-cylindrical. The front and rear side walls of the lower end of the desulphurizing body are provided with a first U-shaped groove that matches the first support wheel. The desulphurizing body is slidably connected between two first support plates through the cooperation of the first U-shaped groove and the first support wheel. The front and rear side walls of the upper end of the desulfurizing body are provided with a second U-shaped groove that matches the second support wheel. The desulfurizing body is slidably connected between two second support plates through the cooperation of the second U-shaped groove and the second support wheel. The flue gas inlet pipe is provided on the side wall of the right end of the desulfurizing body, and the flue gas outlet pipe is provided on the side wall of the left end of the desulphurizing body. The top of the left end of the desulfurizing body is connected to the bottom of the right end of the desulphurizing body through a pipe assembly. During operation, first rotate the outer cylinder so that the second notch faces directly downwards, then insert the desulphurizing body into the outer cylinder. Next, rotate the outer cylinder so that the first notch faces directly downwards, then insert the desulfurizing body into the outer cylinder. Finally, connect the desulfurizing body and the desulphurizing body through the pipe assembly. The flue gas enters the desulfurizing body from the flue gas inlet pipe, and after the first dust removal and desulfurization, it enters the desulphurizing body. After desulphurization and the second dust removal, it is discharged from the flue gas outlet pipe.

[0020] The aforementioned denitrification body is provided with a secondary dust filter and a denitrification filter from left to right. The desulfurization body is provided with a desulfurization filter and a primary dust filter from left to right. One end of the pipeline assembly is connected to the top of the desulfurization body on the left side of the desulfurization filter, and the other end of the pipeline assembly is connected to the bottom of the denitrification body on the right side of the denitrification filter.

[0021] like Figure 1Both the desulfurization filter and the denitrification filter shown have a honeycomb structure. One end of the honeycomb structure has several filter holes, and the other end is open. The honeycomb structure of the desulfurization filter is filled with a desulfurization catalyst. The left end of the desulfurization body is detachably connected to a first arc-shaped grid plate 11. The first arc-shaped grid plate extends into the desulfurization body and is connected to the open end of the honeycomb structure of the desulfurization filter. The desulfurization catalyst is confined within the honeycomb structure by the first arc-shaped grid plate. The honeycomb structure of the denitrification filter is filled with a denitrification catalyst. The right end of the denitrification body is detachably connected to a second arc-shaped grid plate 12. The second arc-shaped grid plate extends into the denitrification body and is connected to the open end of the honeycomb structure of the denitrification filter. The denitrification catalyst is confined within the honeycomb structure by the second arc-shaped grid plate.

[0022] like Figure 1 The bottom of the left end of the desulfurization body shown is provided with a first catalyst addition and discharge port, which is located directly opposite the desulfurization filter. The first catalyst addition and discharge port is sealed by a first sealing cover plate 22. A first notch 1-1 is provided on the outer cylinder body relative to the first sealing cover plate. The top of the right end of the desulfurization body is provided with a second catalyst addition and discharge port, which is located directly opposite the desulfurization filter. The second catalyst addition and discharge port is sealed by a second sealing cover plate 6. A second notch 1-2 is provided on the outer cylinder body relative to the second sealing cover plate.

[0023] like Figure 3 A fixing plate 19 is provided at the left end of the desulfurization body and the right end of the denitrification body. A locking plate 21 is connected to the right end of the first arc-shaped grid plate and the left end of the second arc-shaped grid plate. A first threaded hole is provided on the fixing plate. A locking hole is provided on the locking plate directly opposite the first threaded hole. A locking rod 20 is connected in the first threaded hole. A first external thread matching the first threaded hole is provided on the outer wall of the locking rod. One end of the locking rod passes through the first threaded hole and connects to the locking hole.

[0024] like Figure 1 A first auxiliary traveling pulley is provided at the bottom of the desulfurization body on the right side of the first notch, and a second auxiliary traveling pulley is provided at the top of the desulfurization body on the left side of the second notch. Both the first and second auxiliary traveling pulleys are in contact with the inner wall of the outer cylinder.

[0025] like Figure 1 The bottom of each end of the outer cylinder on the left and right sides of the fixed base is provided with a support base 3. The top of the support base is provided with an arc-shaped groove that matches the outer cylinder. A second guide wheel to assist the rotation of the outer cylinder is provided in the arc-shaped groove.

[0026] like Figure 2A rotary drive mechanism is also provided between the support base and the outer cylinder shown. The rotary drive mechanism includes a servo motor 16, a drive gear 17, and an annular toothed part 18, which are provided on the left support base of the fixed base and the left end face of the outer cylinder. The drive gear is fixedly mounted on the output shaft end of the servo motor and meshes with the annular toothed part.

[0027] like Figure 1 The pipeline assembly shown consists of a first pipeline 13, a second pipeline 14, and a connecting pipeline 15. One end of the first pipeline is installed at the top of the left end of the desulfurization body via a first flange and is connected to the outlet of the desulfurization body. One end of the second pipeline is installed at the bottom of the right end of the desulfurization body via a second flange and is connected to the inlet of the desulfurization body. Both ends of the connecting pipeline are provided with internal threads. The other ends of the first pipeline and the second pipeline are provided with second external threads that match the internal threads. Both ends of the connecting pipeline are detachably connected to the first pipeline and the second pipeline respectively through the cooperation of the second external threads and the internal threads.

[0028] In summary, this invention enables rapid replacement of the desulfurizing and denitrifying agents during the outer cylinder's rotation by disassembling and assembling the arc-shaped grid plate and sealing cover, ensuring desulfurization and denitrification effects and enhancing practicality. Furthermore, if the desulfurizing or denitrifying agent malfunctions, it can be disassembled separately and transported via auxiliary pulleys, facilitating future maintenance. This design also boasts advantages such as simple structure, ease of manufacture, and high efficiency.

[0029] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system, characterized in that: The system includes an outer cylinder, a desulfurization body, a denitrification body, a flue gas inlet pipe, and a flue gas outlet pipe. The outer cylinder is horizontally positioned and rotatably connected to a fixed base. A first guide wheel to assist the rotation of the outer cylinder is installed within the fixed base. Two first support plates and two second support plates are horizontally positioned inside the outer cylinder. The two second support plates are located directly below the two first support plates. Several first support wheels are installed on the opposite sidewalls of the two first support plates, and several second support wheels are installed on the opposite sidewalls of the two second support plates. The denitrification body and the desulfurization body are both semi-circular. The desulfurization body is cylindrical. A first U-shaped groove matching a first support wheel is provided on the front and rear side walls of the lower end of the desulfurization body. The desulfurization body is slidably connected between two first support plates through the cooperation of the first U-shaped groove and the first support wheel. A second U-shaped groove matching a second support wheel is provided on the front and rear side walls of the upper end of the desulfurization body. The desulfurization body is slidably connected between two second support plates through the cooperation of the second U-shaped groove and the second support wheel. The flue gas inlet pipe is located on the side wall of the right end of the desulfurization body, and the flue gas outlet pipe is located on the side wall of the left end of the desulfurization body. The top of the left end of the desulfurization body is connected to the bottom of the right end of the desulfurization body through a pipe assembly. The denitrification body is provided with a secondary dust filter and a denitrification filter from left to right. The desulfurization body is provided with a desulfurization filter and a primary dust filter from left to right. One end of the pipeline assembly is connected to the top of the desulfurization body on the left side of the desulfurization filter, and the other end of the pipeline assembly is connected to the bottom of the denitrification body on the right side of the denitrification filter. Both the desulfurization filter and the denitrification filter have a honeycomb structure. One end of the honeycomb structure has several filter holes, and the other end is open. The honeycomb structure of the desulfurization filter is filled with a desulfurization catalyst. The left end of the desulfurization body is detachably connected to a first arc-shaped grid plate. The first arc-shaped grid plate extends into the desulfurization body and is connected to the open end of the honeycomb structure of the desulfurization filter. The desulfurization catalyst is confined within the honeycomb structure by the first arc-shaped grid plate. The honeycomb structure of the denitrification filter is filled with a denitrification catalyst. The right end of the denitrification body is detachably connected to a second arc-shaped grid plate. The second arc-shaped grid plate extends into the denitrification body and is connected to the open end of the honeycomb structure of the denitrification filter. The denitrification catalyst is confined within the honeycomb structure by the second arc-shaped grid plate. A first catalyst addition and discharge port is provided at the bottom of the left end of the desulfurization body, directly opposite the desulfurization filter. The first catalyst addition and discharge port is sealed by a first sealing cover plate. A first notch is provided on the outer cylinder body relative to the first sealing cover plate. A second catalyst addition and discharge port is provided at the top of the right end of the desulfurization body, directly opposite the desulfurization filter. The second catalyst addition and discharge port is sealed by a second sealing cover plate. A second notch is provided on the outer cylinder body relative to the second sealing cover plate.

2. The fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system according to claim 1, characterized in that: A fixing plate is provided at the left end of the desulfurization body and the right end of the denitrification body. A locking plate is connected to the right end of the first arc-shaped grid plate and the left end of the second arc-shaped grid plate. A first threaded hole is provided on the fixing plate. A locking hole is provided on the locking plate directly opposite the first threaded hole. A locking rod is connected in the first threaded hole. A first external thread matching the first threaded hole is provided on the outer wall of the locking rod. One end of the locking rod passes through the first threaded hole and connects to the locking hole.

3. The fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system according to claim 1, characterized in that: A first auxiliary traveling pulley is provided at the bottom of the desulfurization body on the right side of the first notch, and a second auxiliary traveling pulley is provided at the top of the desulfurization body on the left side of the second notch. Both the first and second auxiliary traveling pulleys are in contact with the inner wall of the outer cylinder.

4. The fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system according to claim 1, characterized in that: Each of the bottom ends of the outer cylinder on the left and right sides of the fixed base is provided with a support base. The top of the support base is provided with an arc-shaped groove that matches the outer cylinder. A second guide wheel to assist the rotation of the outer cylinder is provided in the arc-shaped groove.

5. The fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system according to claim 1, characterized in that: A rotary drive mechanism is also provided between the support base and the outer cylinder. The rotary drive mechanism includes a servo motor, a drive gear, and an annular toothed part on the left end face of the outer cylinder, all mounted on the support base on the left side of the fixed base. The drive gear is fixedly mounted on the output shaft end of the servo motor, and the drive gear meshes with the annular toothed part.

6. The fixed-bed dry desulfurization, denitrification, and dust removal integrated treatment system according to claim 1, characterized in that: The pipeline assembly consists of a first pipeline, a second pipeline, and a connecting pipeline. One end of the first pipeline is installed at the top of the left end of the desulfurization body via a first flange and is connected to the outlet of the desulfurization body. One end of the second pipeline is installed at the bottom of the right end of the desulfurization body via a second flange and is connected to the inlet of the desulfurization body. Both ends of the connecting pipeline are provided with internal threads. The other ends of the first pipeline and the second pipeline are provided with second external threads that match the internal threads. Both ends of the connecting pipeline are detachably connected to the first pipeline and the second pipeline respectively through the cooperation of the second external threads and the internal threads.

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