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CN-121988153-A - Low-temperature catalytic absorption desulfurization and denitrification device for biomass boiler

CN121988153ACN 121988153 ACN121988153 ACN 121988153ACN-121988153-A

Abstract

The application relates to the technical field of boiler waste gas treatment, in particular to a desulfurization and denitrification device of a biomass boiler by a low-temperature catalytic absorption method, which comprises a liquid injection unit, a reaction unit and a proportioning unit which are sequentially distributed from left to right, wherein the reaction unit comprises a reduction tower body and a reactor fixedly communicated with the outer wall of the reduction tower body, a feed pipe communicated with the proportioning unit is fixedly arranged on the outer wall of the reactor, an exhaust pipe is fixedly arranged on the top side of the reduction tower body, and a supporting component and a treatment device are arranged outside the reactor. This biomass boiler low temperature catalysis absorption method SOx/NOx control device outwards expands through the centrifugal action, not only drives vibration subassembly and carries out the deashing to the reactor, makes locating piece and guide frame inner wall offset simultaneously, realizes the locking of casing, has greatly improved the work efficiency and the stability of device, has reduced extra vibrations, has guaranteed the stability at deashing in-process processing apparatus, avoids influencing the deashing effect because of vibrations lead to the position deviation.

Inventors

  • ZHU CHONG
  • ZHANG ZHENGFU
  • ZHOU YIFEI

Assignees

  • 江苏云之蓝环保科技有限公司

Dates

Publication Date
20260508
Application Date
20260316

Claims (10)

  1. 1. The low-temperature catalytic absorption desulfurization and denitrification device for the biomass boiler comprises a liquid injection unit (100), a reaction unit (200) and a proportioning unit (300) which are sequentially distributed from left to right, and is characterized in that the reaction unit (200) comprises a reduction tower body (1) and a reactor (2) fixedly communicated with the outer wall of the reduction tower body (1), a feed pipe (4) communicated with the proportioning unit (300) is fixedly arranged on the outer wall of the reactor (2), and an exhaust pipe (3) is fixedly arranged on the top side of the reduction tower body (1); The reactor is characterized in that a supporting component (5) and a processing device (6) are arranged outside the reactor (2), wherein the supporting component (5) comprises a guide frame (51) and a supporting cross rod (52), the processing device (6) is arranged on the guide frame (51) in a sliding mode, the processing device (6) comprises a machine shell (61), a traveling sliding block (63) and a vibration component (64), the vibration component (64) is arranged inside the machine shell (61) and used for vibration of the reactor (2), the vibration component (64) comprises two sliding seats (641) and vibration blocks (642) which are distributed up and down, a connecting frame (645) is arranged between the two sliding seats (641), a first reset spring (643) is fixed on the outer wall of the two sliding seats (641), and a guide rail (644) for limiting the two vibration blocks (642) is arranged on the outer wall of the machine shell (61). The inside of casing (61) is provided with cooperation actuating mechanism (7) and location structure (8) that vibrations subassembly (64) used, location structure (8) are including mount pad (81) and quantity for locating piece (82) that two and distributes from top to bottom, and wherein, two locating pieces (82) slidable mounting in casing (61), two locating piece (82) with articulated between mount pad (81) have vaulting pole (83), mount pad (81) with be provided with pull rod (84) between actuating mechanism (7).
  2. 2. The desulfurization and denitrification device for the biomass boiler by the low-temperature catalytic absorption method according to claim 1, wherein the inside of the shell (61) is hollow, an overhaul plate (62) is mounted on the outer wall of the shell (61) through bolts, two sliding openings (646) which are in number and correspond to the two sliding seats (641) are formed in the inside of the shell (61), and abutting balls (647) which are in abutting fit with the driving mechanism (7) are mounted on the bottom side of the sliding seat (641) at the top.
  3. 3. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers is characterized in that a rotating shaft (65) connected with the shell (61) is arranged on the outer wall of the traveling slide block (63), the traveling slide block (63) is slidably arranged inside the guide frame (51) to realize displacement of the shell (61), the vibration assembly (64) is enabled to displace along the reactor (2), vibration cavities are formed in the two vibration blocks (642), and the vibration sensing module is arranged in the vibration cavities.
  4. 4. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers, as set forth in claim 2, is characterized in that the driving mechanism (7) is used for driving the vibration assembly (64) and the positioning structure (8) respectively, the positioning structure (8) is used for locking the casing (61), the driving mechanism (7) comprises a driving shaft (71), a driving piece (72), a first rotating seat (73) and a second rotating seat (74) which are arranged in the casing (61) in a bearing mode, and a cam (79) in butt fit with the butt balls (647) is fixed on the outer surface of the second rotating seat (74).
  5. 5. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers, as claimed in claim 4, wherein the driving mechanism (7) further comprises an annular sleeve (76) sleeved outside the driving shaft (71) and supporting blocks (75) slidably installed inside the rotating seat I (73), the number of the annular sleeves (76) is two, the two annular sleeves (76) are rotationally connected, and a connecting rod (77) is hinged between one annular sleeve (76) and each supporting block (75).
  6. 6. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers, as claimed in claim 5, is characterized in that the shape of each supporting block (75) is T-shaped, the inside of each rotating seat II (74) is hollow, the rotating seat I (73) is positioned inside the rotating seat II (74), and a reset spring II (78) is arranged between the outer wall of each supporting block (75) and the rotating seat I (73).
  7. 7. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers, as claimed in claim 5, is characterized in that one end, far away from the installation seat (81), of the pull rod (84) is hinged with the outside of the other annular sleeve (76), a guide piece (85) is further arranged on the top side of the installation seat (81), the two positioning blocks (82) and the supporting rods (83) are vertically and symmetrically distributed, the horizontal movement of the installation seat (81) is realized by using the driving mechanism (7) and the pull rod (84), and the rotation of the two supporting rods (83) and the relative or separate displacement of the two positioning blocks (82) are pushed.
  8. 8. The low-temperature catalytic absorption desulfurization and denitrification device for biomass boilers is characterized in that a pressurizing assembly (9) matched with the guide piece (85) and the vibration assembly (64) is further arranged in the shell (61), the guide piece (85) is used for realizing work requirement conversion of the pressurizing assembly (9), the guide piece (85) comprises a base (851) fixed on the outer surface of the mounting seat (81), a guide plate (852) is fixed at the top end of the base (851), and a horizontal plane (853) and an inclined plane (854) for switching the pressurizing assembly (9) are arranged on the top side of the guide plate (852).
  9. 9. The low-temperature catalytic absorption desulfurization and denitrification device of a biomass boiler according to claim 8, wherein the pressurizing assembly (9) comprises a pressurizing cylinder (91) fixed inside a casing (61), pistons (92) are arranged inside the pressurizing cylinder (91), two check valves (95) are installed on the outer wall of the pressurizing cylinder (91), communicating pipes (96) are fixed at the end parts of the two check valves (95), one communicating pipe (96) is fixedly communicated with the sliding seat (641) at the top, a plugging block (97) matched with a horizontal plane (853) and an inclined plane (854) is elastically arranged at the end part of the other communicating pipe (96), and a return spring III (98) is fixed between the outer wall of the plugging block (97) and the communicating pipe (96).
  10. 10. The low-temperature catalytic absorption desulfurization and denitrification device for a biomass boiler according to claim 9, wherein an abutting block (93) is fixed on the outer wall of the piston (92), the abutting block (93) is positioned above the sliding seat (641) at the top, the abutting block (93) abuts against and drives the piston (92) through reciprocation of the sliding seat (641) at the top, and a buffer spring (94) is arranged between the abutting block (93) and the pressurizing cylinder (91).

Description

Low-temperature catalytic absorption desulfurization and denitrification device for biomass boiler Technical Field The application relates to the technical field of boiler waste gas treatment, in particular to a desulfurization and denitrification device for a biomass boiler by a low-temperature catalytic absorption method. Background With the increasingly strict environmental protection requirements, the efficient purification of the biomass boiler flue gas becomes necessary. The low-temperature catalytic absorption method is an effective desulfurization and denitrification technology, and is focused on due to the advantages of wide application temperature range, low construction cost and the like. The core of the technology is that sulfur dioxide and nitrogen oxides in the flue gas are converted into high-valence compounds which are easy to be absorbed by alkali liquor by spraying a catalytic oxidant, and finally the high-valence compounds are absorbed and removed in a reduction tower. However, in actual operation, the critical components for transporting flue gas and performing oxidation reactions, typically designed as U-shaped reactors, particularly U-bends and the like, are extremely prone to dust adhesion and scale formation. The accumulated ash not only can reduce the flow area of a flue and increase the system resistance and energy consumption, but also seriously weakens the reaction efficiency, influences the final desulfurization and denitrification effect, and is difficult to continuously meet the ultra-low emission requirement; according to the related technology, at least the problems of the technology, such as lack of effective and on-line cleaning functions of a reactor, particularly a U-shaped reactor, are solved by the device which only uses a Y-shaped pipe and a flushing nozzle to flush, and the device is in a passive, intermittent and cleaning mode requiring shutdown or load reduction operation, so that the accumulated ash which is hardened can not be effectively removed by flushing easily-adhered substances such as alkali metal salt, dust and the like which are rich in biomass flue gas by pure water or absorption liquid, and normal desulfurization and denitrification reactions can be influenced during flushing. Disclosure of Invention Aiming at the defects of the prior art, the application provides the desulfurization and denitrification device for the biomass boiler by the low-temperature catalytic absorption method, which has the advantages of high flexibility, good cleaning effect and the like, and solves the problems raised in the prior art. The application provides a desulfurization and denitrification device for a biomass boiler by a low-temperature catalytic absorption method, which adopts the following technical scheme: The low-temperature catalytic absorption desulfurization and denitrification device for the biomass boiler comprises a liquid injection unit, a reaction unit and a proportioning unit which are sequentially distributed from left to right, wherein the reaction unit comprises a reduction tower body and a reactor fixedly communicated with the outer wall of the reduction tower body, a feed pipe communicated with the proportioning unit is fixed on the outer wall of the reactor, and an exhaust pipe is fixed on the top side of the reduction tower body; The outside of the reactor is provided with a supporting component and a processing device, wherein the supporting component comprises a guide frame and a supporting cross rod, the processing device is arranged on the guide frame in a sliding way, the processing device comprises a shell, a traveling slide block and a vibration component, the vibration component is positioned in the shell and used for vibrating the reactor, the vibration component comprises two sliding seats and vibration blocks which are distributed up and down in number, a connecting frame is arranged between the two sliding seats, a first reset spring is fixed on the outer wall of each sliding seat, and a guide rail for limiting the two vibration blocks is arranged on the outer wall of the shell; The inside of casing is provided with cooperation vibration assembly's actuating mechanism and location structure that uses, location structure includes mount pad and quantity be two and the locating piece that distributes from top to bottom, wherein, two locating pieces slidable mounting in the casing, two the locating piece with articulated between the mount pad have the vaulting pole, the mount pad with be provided with the pull rod between the actuating mechanism. Optionally, the inside of the shell is hollow, the outer wall of the shell is provided with an access board by bolts, the inside of the shell is provided with two sliding ports corresponding to the two sliding seats, and the bottom side of the sliding seat at the top is provided with a butt ball matched with the driving mechanism in a butt way. Optionally, a rotating shaft connected with the casing