Device and method for co-processing sintering flue gas CO and NOx

Abstract

The invention discloses a sintering flue gas CO and NOx co-processing device and method.The sintering flue gas CO and NOx co-processing device comprises a CO oxidation chamber, three heat storage chambers communicated with the CO oxidation chamber are fixedly installed at the bottom of the CO oxidation chamber, switching valves communicated with the heat storage chambers are fixedly installed at the bottoms of the heat storage chambers, and a smoke inlet pipe and a smoke exhaust pipe are installed at two ports of each switching valve respectively; two ceramic body assemblies are installed on the upper portion and the lower portion of the heat storage chamber, and a NOx treatment chamber communicating with the two ceramic body assemblies is fixedly installed in the middle of the heat storage chamber. And a control valve communicating with the two ceramic body assemblies is fixedly mounted on the side wall of the heat storage chamber, the control valve communicates with a dust suction pipe, the dust suction pipe communicates with a dust collector, and the air outlet end of the dust collector communicates with the smoke inlet pipe. The problems that in traditional sintering flue gas treatment, CO and NOx are separately treated, heat is wasted, energy consumption and cost are high, and the mixing effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a device and method for the coordinated treatment of CO and NOx in sintering flue gas. Background Art

[0002] The sintering process in the steel industry produces a large amount of flue gas containing pollutants such as carbon monoxide and nitrogen oxides. CO is flammable and releases a large amount of heat during oxidation. Treatment of NOx typically requires a catalyst and a reducing agent to react under certain temperature conditions. However, current mainstream sintering flue gas treatment technologies mostly treat CO and NOx separately.

[0003] In existing treatment processes, combustion is often used to oxidize CO into carbon dioxide to eliminate toxicity and explosion risks. The heat generated in this process is often not effectively utilized and is directly discharged with the exhaust gas, resulting in energy waste. For NOx, selective catalytic reduction (SCR) or non-selective catalytic reduction (SNCR) technology is often used. Although these methods can achieve NOx removal, the reaction needs to maintain a specific temperature window, and generally requires additional consumption of natural gas, electric heating, etc. to supplement heat to meet the conditions required for the reaction, which undoubtedly greatly increases the treatment cost.

[0004] Therefore, developing a device and method that can fully utilize the heat of the CO oxidation reaction to achieve coordinated treatment of CO and NOx without the need for additional heat supplementation has become the key to solving the current problems of high energy consumption and high cost in sintering flue gas treatment. Summary of the Invention

[0005] In order to solve the problems of heat waste, high energy consumption and cost, and poor mixing effect in traditional sintering flue gas treatment of CO and NOx treated separately, the purpose of the present invention is to provide a device and method for the coordinated treatment of CO and NOx in sintering flue gas.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a device for the coordinated treatment of CO and NOx in sintering flue gas, comprising a CO oxidation chamber, three heat storage chambers connected thereto are fixedly mounted at the bottom of the CO oxidation chamber, a switching valve connected thereto is fixedly mounted at the bottom of the heat storage chamber, a smoke inlet pipe and a smoke exhaust pipe are respectively mounted at two ports of the switching valve, two ceramic body assemblies are mounted at the upper and lower parts of the heat storage chamber, and a NOx treatment chamber connected to the two ceramic body assemblies is fixedly mounted in the middle part; a control valve connected to the two ceramic body assemblies is fixedly mounted on the side wall of the heat storage chamber, the control valve is connected to a dust suction pipe, the dust suction pipe is connected to a dust collector, and the air outlet end of the dust collector is connected to the smoke inlet pipe;

[0007] The cam is secured to a position 520 feet tall and has a U-shaped base, the U-shaped base having two camshafts, each of which is secured to a position 520 feet tall and has a U-shaped base.

[0008] The inner wall of the NOx treatment chamber is provided with an ammonia nozzle.

[0009] Preferably, the two ends of the arc-shaped spring steel are respectively fixedly connected to the first column and the second column, the end face of the first column is fixedly connected to the side wall of the second side plate, and the end face of the second column away from one end of the arc-shaped spring steel is blocked by the inner side wall of the first side plate; the driving mechanism includes a square block that is slidably connected to the heat storage chamber and the side wall of the first side plate, one end of the square block is fixedly connected to the end face of the second column, and a U-shaped groove is vertically opened at one end of the square block located outside the heat storage chamber, and the driving mechanism also includes a first motor fixedly installed on the outer wall of the heat storage chamber, the output end shaft of the first motor is connected to a driving cam, and the outer wall of the driving cam is slidably connected to the bottom of the U-shaped groove.

[0010] Preferably, the rotary material feeding mechanism includes a second motor fixedly mounted on the outer wall of the heat storage chamber, the output end shaft of the second motor is connected to a circular tube with an opening at one end, and a sealed setting at the other end; the circular tube is located between the first side plate and the second side plate, the outer wall of the circular tube is provided with a plurality of strip holes arranged in a ring array, and the inner walls of the plurality of strip holes are slidably sleeved with a plurality of rectangular plates, and the two side walls of the rectangular plate located inside the circular tube are fixedly connected with two symmetrically arranged U-shaped plates, the end faces of the U-shaped plates are blocked with the inner wall of the circular tube, and the inner wall thereof is rotatably mounted with a roller through a pin shaft; a cavity is provided inside the rectangular plate, and a connecting rod is slidably penetrated by the bottom of the cavity, and one end of the connecting rod located inside the cavity is fixedly connected with a connecting rod which is symmetrical to the inner wall of the cavity The baffle is connected in a sliding manner, and the outer wall of the connecting rod is sleeved with a spring inside the cavity, and the two ends of the spring are respectively pressed against the baffle and the bottom inside the cavity; one end of the connecting rod is fixedly connected to a ring outside the rectangular plate, and the inner wall of the ring is rotatably sleeved with a circular rod, and the two ends of the circular rod are fixedly connected to two symmetrically arranged fixed cams, the outer wall of the roller and the outer wall of the fixed cam are rollingly connected, and the end of the circular rod close to the sealing end of the circular tube is rotatably connected to the inner end surface of the sealing end of the circular tube, and the outer wall of the sealing end of the circular tube rotates through the side wall of the first side plate, and the connection between the several-shaped plate and the bottom of the U-shaped side plate forms a semicircular surface. When the roller is located at the convex bottom of the fixed cam, the end surface of the rectangular plate where the roller is located is slidably connected to the semicircular surface.

[0011] Preferably, a circular hole is opened on the side wall of the second side plate located at the semicircular surface, the circular hole coincides with the axis of the semicircular surface, and the radii of the two are equal; a circular block is rotatably sleeved on the inner wall of the circular tube near the open end, and the circular block is fixedly connected to a fixed cam at the open end of the circular tube, the outer wall of the circular block is fixedly sleeved on the annular porous plate, the outer wall of the annular porous plate is fixedly sleeved on the inner wall of the circular hole, the outer wall of the control valve port is fixedly connected to the side wall of the heat storage chamber, and the outer wall of the port is fixedly sleeved on the inner wall of the circular hole.

[0012] Preferably, the turning point at the top of the U-shaped side panel is chamfered, the top of the partition is semicircular, and the axis of the semicircular coincides with the axis of the chamfered corner at the top of the U-shaped side panel; the bottom of the partition is provided with a concave arc surface, and the inner wall of the concave arc surface is slidably connected to the outer wall of the circular tube; a connecting pipe connected to the airway is fixedly installed on the side wall of the partition near the bottom, and the end of the connecting pipe away from the partition is connected to the wedge-shaped nozzle, and a strip hole is provided on the side wall of the partition at the airway, and a metal heat conducting plate is fixedly sleeved on the inner wall of the strip hole, and the metal heat conducting plate is located on one side of the several-shaped plate, and the side walls of the heat storage chamber and the first side panel are fixedly connected with an air intake pipe, and the air intake pipe is connected to the airway.

[0013] Preferably, the side walls of the first side plate and the second side plate located inside the several-shaped plate are fixedly connected with several-shaped fixing blocks respectively, the side walls of the several-shaped fixing blocks are fixedly connected with the side walls of the wedge-shaped nozzle, the arc-shaped walls on both sides of the several-shaped fixing blocks are fixedly connected with the inner wall of the several-shaped plate, the bottom opening of the several-shaped plate and the two several-shaped fixing blocks form a lower smoke outlet, the interval between the tops of the two U-shaped side plates and the first side plate and the second side plate form an upper smoke outlet, and the inner wall at the upper smoke outlet is fixedly sleeved with a square porous plate; the top port of the switching valve is connected to the lower smoke outlet at the bottom of the lower ceramic body assembly, the CO oxidation chamber is connected to the upper smoke outlet at the top of the upper ceramic body assembly, the bottom port of the NOx treatment chamber is connected to the upper smoke outlet at the top of the lower ceramic body assembly, and its top port is connected to the lower smoke outlet at the bottom of the upper ceramic body assembly.

[0014] Preferably, a burner is installed inside the CO oxidation chamber for preheating.

[0015] Preferably, the inner wall of the NOx treatment chamber is set in a concave arc shape, and the arc-shaped inner wall is set as a cavity; the side wall of the heat storage chamber is fixedly installed with a solenoid valve connected to the cavity of the arc-shaped inner wall, the solenoid valve is connected to an ammonia pipe, and the ammonia nozzle is connected to the cavity of the arc-shaped inner wall.

[0016] A method for co-processing CO and NOx in sintering flue gas, further comprising a temperature sensor installed on the inner wall of a NOx treatment chamber, and the steps are as follows:

[0017] S1, the CO oxidation chamber is preheated, and its internal heat is transferred to the interior of the heat storage chamber. During the preheating process, the two ceramic body components rotate the material feeding mechanism to push the ceramic beads between the mold plate and the partition toward the other side of the partition. The ceramic beads between the two partitions continuously creep downward, and the ceramic beads on the other side of the partition flip from the top of the partition into between the two partitions. The ceramic beads creep, improving the heat transfer efficiency. When the temperature sensor detects that the temperature of the NOx treatment chamber has reached the set treatment temperature, the preheating stops;

[0018] S2, set three regenerators as A, B and C in sequence; a single regenerator is used for flue gas NOx treatment, dust removal and purge, and heat storage and exhaust; the smoke inlet pipe transports sintering flue gas; the smoke exhaust pipe discharges the treated flue gas; the CO oxidation chamber is used for CO treatment;

[0019] When the regenerator in A is used for smoke processing, the smoke inlet pipe and the regenerator are connected through the switching valve, the smoke exhaust pipe and the regenerator are cut off, and the control valve is closed;

[0020] When the regenerator in B is used for heat storage and smoke exhaust, the smoke inlet pipe and the regenerator are cut off by the switching valve, the smoke exhaust pipe and the regenerator are connected, and the control valve is closed;

[0021] The smoke inlet pipe transports the sintering flue gas to the heat storage chamber in A, and the sintering flue gas enters the several-shaped plates of the ceramic body assembly below, and flows toward the arc spring steel through the diversion of the wedge-shaped surface at the bottom of the two wedge-shaped nozzles; at the same time, the two air channels in the two partitions respectively supply oxygen and NOx treatment catalyst to the two wedge-shaped nozzles, and the oxygen and NOx treatment catalyst are ejected toward the arc spring steel. The oxygen, NOx treatment catalyst and flue gas synchronously bypass the arc spring steel upward and are mixed by the Karman vortex street phenomenon. At the same time, the driving mechanism continuously drives the arc spring steel to perform elastic bending, constantly disturbing the airflow to achieve sufficient mixing; the mixed flue gas enters the space between the two partitions from the porous strip plate, and the mixed flue gas passes through the ceramic beads of the ceramic body assembly below. The rotating material feeding mechanism causes the ceramic beads to peristaltic, which impacts the mixed flue gas between the ceramic beads downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads wipes off the smoke dust adsorbed on the surface of the ceramic beads, maintaining good thermal performance;

[0022] The mixed flue gas enters the NOx treatment chamber, and the ammonia nozzle sprays ammonia at the same time. The sintering flue gas undergoes flue gas NOx treatment in the NOx treatment chamber, absorbing heat during the NOx treatment process;

[0023] Then the mixed flue gas enters the several plates of the upper ceramic body assembly, and at the same time, the two air passages in the two partitions supply oxygen and CO treatment catalyst to the two wedge-shaped nozzles respectively. The oxygen and CO treatment catalyst are ejected toward the arc spring steel, and the oxygen, CO treatment catalyst and flue gas synchronously bypass the arc spring steel upward, and are mixed by the Karman vortex street phenomenon. At the same time, the driving mechanism continuously drives the arc spring steel to perform elastic bending, constantly disturbing the airflow to achieve sufficient mixing; the mixed flue gas enters the space between the two partitions from the porous strip plate, and the mixed flue gas passes through the ceramic beads of the upper ceramic body assembly. The rotating material feeding mechanism causes the ceramic beads to circulate, and then the mixed flue gas between the ceramic beads is impacted downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads will wipe off the smoke dust adsorbed on the surface of the ceramic beads; at the same time, the untreated NOx is thoroughly treated in the upper ceramic body assembly;

[0024] S3, the mixed flue gas enters the CO oxidation chamber for CO treatment, while releasing heat;

[0025] S4, the heat and treated flue gas enter the regenerator in B, and the ceramic beads in the regenerator in B keep creeping downward, and the ceramic beads absorb heat;

[0026] S5, the flue gas from the regenerator in B is discharged through the exhaust pipe;

[0027] S6, when the temperature sensor in A detects that the temperature of the NOx treatment chamber has dropped to the set non-treatment temperature due to the heat absorption of the NOx treatment, and the temperature sensor in the heat storage chamber in B detects that the temperature of the NOx treatment chamber has reached the set treatment temperature;

[0028] The regenerator in A is dust-removed and blown. The switching valve cuts off the smoke inlet pipe and the regenerator, cuts off the smoke exhaust pipe and the regenerator, opens the control valve, and the vacuum cleaner runs, returning the remaining untreated smoke in the regenerator in A to the smoke inlet pipe. At the same time, the ceramic beads circulate, and the friction between the ceramic beads wipes off the smoke adsorbed on the surface of the ceramic beads, and the dust in the regenerator is sucked into the vacuum cleaner;

[0029] The regenerator in B is used for smoke inlet processing. The switching valve is used to connect the smoke inlet pipe and the regenerator, and the smoke exhaust pipe and the regenerator are disconnected, and the control valve is closed;

[0030] The regenerator in C is used for heat storage and smoke exhaust. The switching valve is used to cut off the smoke inlet pipe and the regenerator, and the smoke exhaust pipe and the regenerator are connected, and the control valve is closed;

[0031] S7, then C takes in smoke for treatment, A stores heat for exhaust, B removes dust and sweeps, and the cycle continues.

[0032] Compared with the prior art, the present invention achieves the following beneficial effects:

[0033] 1. The present invention releases heat through catalytic oxidation in the CO oxidation chamber. The generated heat is transferred through the ceramic body component and stored in the heat storage chamber. The NOx treatment chamber meets the temperature window required for the reaction, provides heat for the NOx treatment reaction, and achieves system self-heating balance, which greatly reduces energy consumption, reduces fuel costs and equipment investment caused by heat supplementation, and significantly improves the energy utilization efficiency of the device.

[0034] 2. The present invention utilizes the elastic bending of the arc-shaped spring steel under the action of the driving mechanism, combined with the Karman vortex street phenomenon generated by the airflow bypassing the spring steel, to fully mix the flue gas, oxygen and catalyst in a short time.

[0035] 3. The present invention promotes the circulatory peristalsis of ceramic beads through the rotating material mechanism, which forms a continuous impact on the mixed flue gas, avoids the channel effect, ensures that the flue gas is fully in contact with oxygen and catalyst, effectively improves the removal rate of CO and NOx, and makes the flue gas purification more thorough.

[0036] 4. The present invention uses the friction between the ceramic beads to effectively remove the smoke and dust adsorbed on their surfaces by rotating the material-dispensing mechanism to push the ceramic beads to move, and combines the suction effect of the vacuum cleaner to achieve dynamic online dust cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 A schematic diagram of the connection between the ceramic body assembly and the NOx treatment chamber of the present invention;

[0040] Figure 3 It is a schematic structural diagram of a cross-section of the NOx treatment chamber of the present invention;

[0041] Figure 4 is a schematic structural diagram of a ceramic body assembly of the present invention;

[0042] Figure 5 Schematic diagram of the internal structure of the ceramic body assembly of the present invention;

[0043] Figure 6 Schematic diagram of the structure of the driving mechanism of the present invention;

[0044] Figure 7 It is a structural schematic diagram of the rotary material-diverting mechanism of the present invention;

[0045] Figure 8 This is a schematic structural diagram of the open end of a circular tube according to the present invention;

[0046] Figure 9 Schematic diagram of the structure of the cavity of the present invention;

[0047] Figure 10 It is a structural schematic diagram of the circular rod of the present invention;

[0048] Figure 11 It is a structural schematic diagram of the circular block of the present invention;

[0049] Figure 12 It is a structural schematic diagram of the circular hole of the present invention;

[0050] Figure 13 Schematic diagram of the structure of the airway of the present invention.

[0051] In the figure: 100, CO oxidation chamber; 200, heat storage chamber; 300, switching valve; 400, smoke inlet pipe; 500, smoke exhaust pipe; 600, ceramic body assembly; 700, NOx treatment chamber; 800, control valve; 900, dust collection pipe; 1000, dust collector; 1, first side plate; 2, second side plate; 3, U-shaped side plate; 4, multi-shaped plate; 5, partition; 6, arc spring steel; 8, wedge-shaped nozzle; 9, air duct; 11, rotary material feeding mechanism; 12, multi-shaped fixing block; 13, square porous plate; 401, multi-porous strip plate; 601, first column; 602, second column; 7, driving mechanism; 701, square block; 702 , U-shaped groove; 703, first motor; 704, driving cam; 1101, second motor; 1102, round tube; 1103, rectangular plate; 1104, U-shaped plate; 1105, roller; 1106, cavity; 1107, connecting rod; 1108, baffle; 1109, spring; 1110, collar; 1111, round rod; 1112, fixed cam; 43, semicircular surface; 201, circular hole; 1113, circular block; 1114, annular porous plate; 901, connecting pipe; 902, metal heat conducting plate; 903, air intake pipe; 7001, ammonia nozzle; 7002, solenoid valve; 7003, ammonia pipe. DETAILED DESCRIPTION

[0052] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0053] See also Figures 1 to 13 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0054] The present invention provides a technical solution: a device for the coordinated treatment of CO and NOx in sintering flue gas, comprising a CO oxidation chamber 100, three regenerator chambers 200 fixedly mounted at the bottom of the CO oxidation chamber 100 in communication therewith, a switching valve 300 fixedly mounted at the bottom of the regenerator chamber 200 in communication therewith, a smoke inlet pipe 400 and a smoke exhaust pipe 500 mounted at the two ends of the switching valve 300, respectively. Two ceramic body assemblies 600 are mounted at the upper and lower portions of the regenerator chamber 200, and a NOx treatment chamber 700 fixedly mounted in the middle portion in communication with the two ceramic body assemblies 600 is fixedly mounted. A control valve 800 in communication with the two ceramic body assemblies 600 is fixedly mounted on the side wall of the regenerator chamber 200, the control valve 800 in communication with a dust collection pipe 900, the dust collection pipe 900 in communication with a dust collector 1000, the air outlet end of the dust collector 1000 in communication with the smoke inlet pipe 400.

[0055] The ceramic body assembly 600 includes a first side plate 1 and a second side plate 2, and two symmetrical U-shaped side plates 3, a multi-shaped plate 4 and two symmetrically arranged partitions 5 are fixedly connected between the first side plate 1 and the second side plate 2; a rectangular hole is opened on the top of the multi-shaped plate 4, and a porous strip plate 401 is fixedly sleeved on the inner wall of the rectangular hole; the two ends below the multi-shaped plate 4 are respectively fixedly connected to the two ends below the two U-shaped side plates 3, and the space between the two U-shaped side plates 3 and the multi-shaped plate 4 is filled with ceramic beads, and the U-shaped The outer wall inside the side plate 3 is installed with a rotating material dispensing mechanism 11, which is used to push the ceramic beads between the several-shaped plate 4 and the partition 5 toward the other side of the partition 5; the inside of the several-shaped plate 4 is installed with an arc spring steel 6, and the arc spring steel 6 is elastically bent and driven by a driving mechanism 7 arranged on the side of the first side plate 1; two symmetrically arranged wedge-shaped nozzles 8 are fixedly installed on the inner wall of the several-shaped plate 4 below the arc spring steel 6, and an air duct 9 connected to the wedge-shaped nozzle 8 is opened in the partition 5, and the control valve 800 is connected to the bottom space of the U-shaped side plate 3.

[0056] An ammonia nozzle 7001 is provided on the inner wall of the NOx treatment chamber 700 .

[0057] Furthermore, the two ends of the arc spring steel 6 are fixedly connected with a first column 601 and a second column 602 respectively, the end face of the first column 601 is fixedly connected to the side wall of the second side plate 2, and the end face of the second column 602 away from the end of the arc spring steel 6 is blocked with the inner wall of the first side plate 1; the driving mechanism 7 includes a square block 701 that is slidably connected to the side wall of the heat storage chamber 200 and the first side plate 1, one end of the square block 701 is fixedly connected to the end face of the second column 602, and a U-shaped groove 702 is vertically opened at one end of the square block 701 located outside the heat storage chamber 200, and the driving mechanism 7 also includes a first motor 703 fixedly installed on the outer wall of the heat storage chamber 200, and the output end shaft of the first motor 703 is connected to a driving cam 704, and the outer wall of the driving cam 704 is slidably connected to the bottom of the U-shaped groove 702. The first motor 703 transmits power to the driving cam 704 , which slides with the bottom of the U-shaped groove 702 , so that the arc spring steel 6 is continuously driven to bend elastically, constantly disturbing the airflow and achieving sufficient mixing.

[0058] The rotary feeding mechanism 11 includes a second motor 1101 fixedly mounted on the outer wall of the heat storage chamber 200. The output end of the second motor 1101 is connected to a circular tube 1102 with an open end and a sealed end. The circular tube 1102 is located between the first side plate 1 and the second side plate 2. The outer wall of the circular tube 1102 is provided with a plurality of strip holes arranged in a circular array. The inner walls of the plurality of strip holes are slidably sleeved with a plurality of rectangular plates 1103. The rectangular plates 1103 are located on the circular tube 1102. Two symmetrically arranged U-shaped plates 1104 are fixedly connected to the two side walls inside the circular tube 1102. The end faces of the U-shaped plates 1104 are in contact with the inner wall of the circular tube 1102, and rollers 1105 are rotatably installed on the inner wall of the circular tube 1102. A cavity 1106 is opened inside the rectangular plate 1103, and a connecting rod 1107 is slidably connected to the bottom of the cavity 1106. One end of the connecting rod 1107 located inside the cavity 1106 is fixedly connected to a baffle 1108 that is slidably connected to the inner wall of the cavity 1106. The outer wall of the connecting rod 1107 located inside the cavity 1106 is sleeved with a spring 1109, and the two ends of the spring 1109 are respectively pressed against the baffle 1108 and the bottom of the cavity 1106; the end of the connecting rod 1107 located outside the rectangular plate 1103 is fixedly connected to a collar 1110, and the inner wall of the collar 1110 is rotatably sleeved with a circular rod 1111, and the two ends of the circular rod 1111 are fixedly connected to two symmetrically arranged fixed cams 1112, and the outer wall of the roller 1105 is fixed to the fixed cam 1112. The outer wall of the cam 1112 is a rolling connection, and the end of the circular rod 1111 close to the sealed end of the circular tube 1102 is rotationally connected to the inner end face of the sealed end of the circular tube 1102. The outer wall of the sealed end of the circular tube 1102 rotates through the side wall of the first side plate 1, and the connection between the U-shaped plate 4 and the bottom of the U-shaped side plate 3 forms a semicircular surface 43. When the roller 1105 is located at the convex bottom of the fixed cam 1112, the end face of the rectangular plate 1103 where the roller 1105 is located is in a sliding connection with the semicircular surface 43. The second motor 1101 drives the circular tube 1102 to rotate, driving several rectangular plates 1103 to rotate synchronously. Under the elastic support of the spring 1109 on the rectangular plate 1103, the roller 1105 is pressed against the outer wall of the fixed cam 1112. When the roller 1105 is located on the convex surface of the convex bottom of the fixed cam 1112, the end face of the rectangular plate 1103 where the roller 1105 is located is in sliding connection with the semicircular surface 43. When the roller 1105 rolls into the convex surface of the convex top of the fixed cam 1112, the end face of the rectangular plate 1103 where the roller 1105 is located is in sliding connection with the semicircular surface 43. When the circular tube 1102 is on the surface, under the action of the elastic support of the spring 1109 on the rectangular plate 1103, the rectangular plate 1103 gradually moves toward the inner wall of the circular tube 1102 until it is completely received in the inner wall of the circular tube 1102, and then the circular tube 1102 continues to rotate, and the rectangular plate 1103 flips from one side of the partition 5 to the side close to the mold plate 4, and then the convex surface on the other side of the convex top of the fixed cam 1112 cooperates with the roller 1105, and the rectangular plate 1103 gradually extends from the circular tube 1102 and moves the ceramic beads.

[0059] A circular hole 201 is provided on the side wall of the second side plate 2 located at the semicircular surface 43. The axis of the circular hole 201 coincides with the axis of the semicircular surface 43, and the radii of the two are equal. A circular block 1113 is rotatably sleeved on the inner wall of the circular tube 1102 near the open end. The circular block 1113 is fixedly connected to a fixed cam 1112 located at the open end of the circular tube 1102. The outer wall of the circular block 1113 is fixedly sleeved on the annular porous plate 1114. The outer wall of the annular porous plate 1114 is fixedly sleeved on the inner wall of the circular hole 201. The outer wall of the control valve 800 at the port is fixedly connected to the side wall of the heat storage chamber 200, and the outer wall at the port is fixedly sleeved on the inner wall of the circular hole 201.

[0060] The top corner of the U-shaped side panel 3 is rounded, and the top of the partition 5 is semicircular, with the axis of the semicircular arc coinciding with the axis of the rounded corner of the top of the U-shaped side panel 3. The bottom of the partition 5 is provided with a concave arc surface, the inner wall of which is in sliding connection with the outer wall of the circular tube 1102. A connecting pipe 901, which is connected to the airway 9, is fixedly mounted on the side wall of the partition 5 near the bottom. The end of the connecting pipe 901, which is remote from the partition 5, is connected to the wedge-shaped nozzle 8. The side wall of the partition 5 located at the airway 9 is provided with a strip hole, and the inner wall of the strip hole is fixedly sleeved with a metal heat conducting plate 902. The metal heat conducting plate 902 is located on one side of the molded plate 4. The side walls of the heat storage chamber 200 and the first side panel 1 are fixedly connected with an air inlet pipe 903, which is connected to the airway 9. The metal heat conducting plate 902 transfers heat from the ceramic beads to the airway 9, preheating the gas in the airway 9.

[0061] The side walls of the first side plate 1 and the second side plate 2 located inside the shaped plate 4 are fixedly connected with shaped fixing blocks 12 respectively, the side walls of the shaped fixing blocks 12 are fixedly connected with the side walls of the wedge-shaped nozzle 8, the arc-shaped walls on both sides of the shaped fixing blocks 12 are fixedly connected with the inner wall of the shaped plate 4, the bottom opening of the shaped plate 4 and the two shaped fixing blocks 12 form a lower smoke outlet, the interval between the tops of the two U-shaped side plates 3 and the first side plate 1 and the second side plate 2 form an upper smoke outlet, and the inner wall of the upper smoke outlet is fixedly sleeved with a square porous plate 13; the top port of the switching valve 300 is connected to the lower smoke outlet at the bottom of the lower ceramic body assembly 600, the CO oxidation chamber 100 is connected to the upper smoke outlet at the top of the upper ceramic body assembly 600, the bottom port of the NOx treatment chamber 700 is connected to the upper smoke outlet at the top of the lower ceramic body assembly 600, and its top port is connected to the lower smoke outlet at the bottom of the upper ceramic body assembly 600.

[0062] A burner is installed within the CO oxidation chamber 100 for preheating. The inner wall of the NOx treatment chamber 700 is designed as a concave arc with a cavity. A solenoid valve 7002 is fixedly mounted on the sidewall of the regenerator 200 and communicates with the cavity. This solenoid valve 7002 is connected to an ammonia pipe 7003, and an ammonia nozzle 7001 is connected to the cavity. It should be noted that ammonia is produced by vaporizing heated ammonia water, so it has its own heat and therefore does not require preheating. Ammonia pipe 7003 is connected to a liquid ammonia vaporizer.

[0063] Based on the above device, the present invention further provides a method for the coordinated treatment of CO and NOx in sintering flue gas. The method adopts the above device for the coordinated treatment of CO and NOx in sintering flue gas, further comprising a temperature sensor installed on the inner wall of the NOx treatment chamber 700, and the steps are as follows:

[0064] S1, CO oxidation chamber 100 is preheated, and its internal heat is transferred to the interior of heat storage chamber 200. During the preheating process, the two ceramic body assemblies 600 rotate the feeding mechanism 11 to push the ceramic beads between the mold plate 4 and the partition 5 toward the other side of the partition 5. The ceramic beads between the two partitions 5 continuously creep downward, and the ceramic beads on the other side of the partition 5 flip from the top of the partition 5 into between the two partitions 5. The ceramic beads creep, improving heat transfer efficiency. When the temperature sensor detects that the temperature of NOx treatment chamber 700 reaches the set treatment temperature, preheating stops;

[0065] S2, set three regenerators 200 as A, B and C in sequence; a single regenerator 200 is used for flue gas NOx treatment, dust removal and purge, and heat storage and smoke exhaust in sequence; the smoke inlet pipe 400 transports sintering flue gas; the smoke exhaust pipe 500 discharges the treated flue gas; the CO oxidation chamber 100 is used for CO treatment;

[0066] When sweeping and blowing dust, use a small air volume;

[0067] When the regenerator 200 in A is used for smoke intake, the switching valve 300 is used to connect the smoke intake pipe 400 and the regenerator 200, the smoke exhaust pipe 500 and the regenerator 200 are disconnected, and the control valve 800 is closed;

[0068] When the regenerator 200 in B is used for heat storage and smoke exhaust, the smoke inlet pipe 400 and the regenerator 200 are cut off by the switching valve 300, the smoke exhaust pipe 500 and the regenerator 200 are connected, and the control valve 800 is closed;

[0069] The smoke inlet pipe 400 transports the sintering flue gas to the heat storage chamber 200 in A, and the sintering flue gas enters the several-shaped plate 4 of the ceramic body assembly 600 below, and flows toward the arc spring steel 6 through the guide of the wedge-shaped surface at the bottom of the two wedge-shaped nozzles 8; at the same time, the two air ducts 9 in the two partitions 5 respectively supply oxygen and NOx treatment catalyst to the two wedge-shaped nozzles 8, and the oxygen and NOx treatment catalyst are ejected toward the arc spring steel 6. The oxygen, NOx treatment catalyst and flue gas simultaneously bypass the arc spring steel 6 upward, and the oxygen, NOx treatment catalyst and flue gas are irradiated by the Karman vortex street phenomenon. The flue gas is mixed with the air, and at the same time, the driving mechanism 7 continuously drives the arc spring steel 6 to bend elastically, constantly disturbing the airflow to achieve full mixing; the mixed flue gas enters the space between the two partitions 5 from the porous strip plate 401, and the mixed flue gas passes through the ceramic beads of the ceramic body assembly 600 below. The rotating material feeding mechanism 11 causes the ceramic beads to circulate, thereby impacting the mixed flue gas between the ceramic beads downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads wipes off the smoke dust adsorbed on the surface of the ceramic beads, maintaining good thermal performance;

[0070] The mixed flue gas enters the NOx treatment chamber 700, and the ammonia nozzle 7001 sprays ammonia. The sintering flue gas is subjected to flue gas NOx treatment in the NOx treatment chamber 700, and heat is absorbed during the NOx treatment process.

[0071] Then the mixed flue gas enters the several-shaped plate 4 of the upper ceramic assembly 600, and at the same time, the two air passages 9 in the two partitions 5 supply oxygen and CO treatment catalyst to the two wedge-shaped nozzles 8 respectively. The oxygen and CO treatment catalyst are ejected toward the arc spring steel 6, and the oxygen, CO treatment catalyst and flue gas are synchronously passed upward around the arc spring steel 6. The oxygen, CO treatment catalyst and flue gas are mixed through the Karman vortex street phenomenon. At the same time, the driving mechanism 7 continuously drives the arc spring steel 6 to perform elastic bending, constantly disturbing the airflow to achieve full mixing. The mixed flue gas enters the space between the two partitions 5 from the porous strip plate 401, and the mixed flue gas passes through the ceramic beads of the upper ceramic assembly 600. The rotating material feeding mechanism 11 causes the ceramic beads to circulate, and then the mixed flue gas between the ceramic beads is impacted downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads will wipe off the smoke dust adsorbed on the surface of the ceramic beads; at the same time, the untreated NOx is thoroughly treated in the upper ceramic assembly 600;

[0072] S3, the mixed flue gas enters the CO oxidation chamber 100 for CO treatment while releasing heat;

[0073] This reaction is exothermic, and the heat released is used to maintain the temperature of the system and achieve self-heating balance of the system without the need for additional external heating;

[0074] In step S4, the heat and treated flue gas enter regenerator 200 in section B. The ceramic beads in regenerator 200 in section B continue to creep downward, absorbing heat. The treated, high-temperature flue gas transfers heat to the ceramic beads in regenerator B, which store the heat and subsequently preheat the incoming sintering flue gas, improving energy efficiency.

[0075] S5, the flue gas from the regenerator 200 in B is discharged through the exhaust pipe 500. The treated flue gas that meets the standards is discharged into the atmosphere through the exhaust pipe 500, reducing pollution to the environment;

[0076] S6, when the temperature sensor in A detects that the temperature of the NOx treatment chamber 700 has dropped to the set non-treatment temperature due to the heat absorption of the NOx treatment, and the temperature sensor in the heat storage chamber 200 in B detects that the temperature of the NOx treatment chamber 700 has reached the set treatment temperature;

[0077] The regenerator 200 in A is dust-purged by shutting off the smoke inlet pipe 400 and the regenerator 200 through the switching valve 300, shutting off the smoke exhaust pipe 500 and the regenerator 200, opening the control valve 800, and operating the dust collector 1000 to return the remaining untreated smoke in the regenerator 200 in A to the smoke inlet pipe 400. Simultaneously, the ceramic beads circulate, and the friction between the beads wipes away the smoke adsorbed on their surfaces, and the dust in the regenerator 200 is sucked into the dust collector.

[0078] The regenerator 200 in B is used for smoke intake. The switching valve 300 connects the smoke inlet pipe 400 and the regenerator 200, cuts off the smoke exhaust pipe 500 and the regenerator 200, and closes the control valve 800.

[0079] The regenerator 200 in C is used for heat storage and smoke exhaust. The switching valve 300 is used to cut off the smoke inlet pipe 400 and the regenerator 200, and the smoke exhaust pipe 500 and the regenerator 200 are connected. The control valve 800 is closed.

[0080] In step S7, C then processes the flue gas, A stores heat for exhaust, and B removes dust and blows it through the cycle. The three regenerators cycle through their operating states in this order, ensuring continuous and stable operation and achieving continuous and efficient treatment of sintering flue gas.

[0081] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A device for the coordinated treatment of CO and NOx in sintering flue gas, comprising a CO oxidation chamber (100), three heat storage chambers (200) in communication with the CO oxidation chamber (100) being fixedly mounted at the bottom of the CO oxidation chamber (100), a switching valve (300) in communication with the heat storage chamber (200) being fixedly mounted at the bottom of the heat storage chamber (200), two ports of the switching valve (300) being respectively mounted with a smoke inlet pipe (400) and a smoke exhaust pipe (500), characterized in that: Two ceramic body assemblies (600) are installed at the upper and lower parts of the heat storage chamber (200), and a NOx treatment chamber (700) is fixedly installed in the middle part and is connected to the two ceramic body assemblies (600); a control valve (800) is fixedly installed on the side wall of the heat storage chamber (200) and is connected to the two ceramic body assemblies (600); the control valve (800) is connected to a dust suction pipe (900), and the dust suction pipe (900) is connected to a dust collector (1000); the air outlet end of the dust collector (1000) is connected to the smoke inlet pipe (400); The ceramic body assembly (600) comprises a first side plate (1) and a second side plate (2); two symmetrical U-shaped side plates (3) with openings facing each other, a symmetrical plate (4), and two symmetrically arranged partitions (5) are fixedly connected between the first side plate (1) and the second side plate (2); a rectangular hole is provided on the top of the symmetrical plate (4), and a porous strip plate (401) is fixedly sleeved on the inner wall of the rectangular hole; two ends below the symmetrical plate (4) are respectively fixedly connected to two ends below the two U-shaped side plates (3); the space between the two U-shaped side plates (3) and the symmetrical plate (4) is filled with ceramic beads; the U-shaped side plates ( 3) A rotating material-dispensing mechanism (11) is installed on the inner outer wall for pushing the ceramic beads between the U-shaped plate (4) and the partition (5) toward the other side of the partition (5); an arc-shaped spring steel (6) is installed inside the U-shaped plate (4), and the arc-shaped spring steel (6) is elastically bent and driven by a driving mechanism (7) arranged on the side of the first side plate (1); two symmetrically arranged wedge-shaped nozzles (8) are fixedly installed on the inner wall of the U-shaped plate (4) below the arc-shaped spring steel (6), and an air passage (9) communicating with the wedge-shaped nozzles (8) is opened in the partition (5), and the control valve (800) is communicated with the bottom space of the U-shaped side plate (3); An ammonia nozzle (7001) is provided on the inner wall of the NOx treatment chamber (700).

2. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: The two ends of the arc spring steel (6) are respectively fixedly connected to a first column (601) and a second column (602), the end face of the first column (601) is fixedly connected to the side wall of the second side plate (2), and the end face of the second column (602) away from one end of the arc spring steel (6) is blocked by the inner side wall of the first side plate (1); the driving mechanism (7) includes a square block (701) that is slidably connected to the heat storage chamber (200) and the side wall of the first side plate (1), and the square block (7 01) is fixedly connected to the end surface of the second column (602), and a U-shaped groove (702) is vertically opened at one end of the square block (701) located outside the heat storage chamber (200). The driving mechanism (7) also includes a first motor (703) fixedly installed on the outer wall of the heat storage chamber (200), and the output end shaft of the first motor (703) is connected to a driving cam (704), and the outer wall of the driving cam (704) is slidably connected to the bottom of the U-shaped groove (702).

3. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: The rotary material feeding mechanism (11) comprises a second motor (1101) fixedly mounted on the outer wall of the heat storage chamber (200); the output end of the second motor (1101) is axially connected to a circular tube (1102) with an opening at one end and a sealing at the other end; the circular tube (1102) is located between the first side plate (1) and the second side plate (2); the outer wall of the circular tube (1102) is provided with a plurality of strip holes arranged in a circular array; the inner walls of the plurality of strip holes are slidably sleeved with a plurality of rectangular plates (1103); the rectangular plates (1103) are located on the circular tube (1102); 2) Two symmetrically arranged U-shaped plates (1104) are fixedly connected to the two side walls of the interior, the end faces of the U-shaped plates (1104) are in contact with the inner wall of the circular tube (1102), and the inner wall thereof is rotatably mounted with a roller (1105) via a pin shaft; a cavity (1106) is provided inside the rectangular plate (1103), a connecting rod (1107) is slidably connected to the bottom of the cavity (1106), and one end of the connecting rod (1107) located inside the cavity (1106) is fixedly connected to a baffle (1108) that is slidably connected to the inner wall of the cavity (1106), and the connecting rod (1107) is fixedly connected to the baffle (1108) that is slidably connected to the inner wall of the cavity (1106). The outer wall of the rod (1107) located inside the cavity (1106) is sleeved with a spring (1109), and the two ends of the spring (1109) are respectively pressed against the baffle (1108) and the bottom of the cavity (1106); one end of the connecting rod (1107) located outside the rectangular plate (1103) is fixedly connected to a collar (1110), and the inner wall of the collar (1110) is rotatably sleeved with a circular rod (1111), and the two ends of the circular rod (1111) are fixedly connected to two symmetrically arranged fixed cams (1112), and the outer wall of the roller (1105) is fixed to the fixed cam (1112). The outer wall of the cam (1112) is in a rolling connection, one end of the circular rod (1111) close to the sealed end of the circular tube (1102) is in a rotational connection with the inner end surface of the sealed end of the circular tube (1102), the outer wall of the sealed end of the circular tube (1102) rotates through the side wall of the first side plate (1), and the connection between the several-shaped plate (4) and the bottom of the U-shaped side plate (3) forms a semicircular arc surface (43), and when the roller (1105) is located at the convex bottom of the fixed cam (1112), the end surface of the rectangular plate (1103) where the roller (1105) is located is in a sliding connection with the semicircular arc surface (43).

4. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 3, characterized in that: A circular hole (201) is provided on the side wall of the second side plate (2) at the semicircular surface (43), and the axis of the circular hole (201) coincides with the axis of the semicircular surface (43), and the radii of the two are equal; a circular block (1113) is rotatably sleeved on the inner wall of the circular tube (1102) near the open end, and the circular block (1113) is fixedly connected to a fixed cam (1112) at the open end of the circular tube (1102); the outer wall of the circular block (1113) is fixedly sleeved on the annular porous plate (1114), and the outer wall of the annular porous plate (1114) is fixedly sleeved on the inner wall of the circular hole (201); the outer wall of the control valve (800) at the port is fixedly connected to the side wall of the heat storage chamber (200), and the outer wall at the port is fixedly sleeved on the inner wall of the circular hole (201).

5. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: The turning point at the top of the U-shaped side plate (3) is chamfered, and the top of the partition (5) is semicircular, and the axis of the semicircular coincides with the axis of the chamfered corner at the top of the U-shaped side plate (3); the bottom of the partition (5) is provided with a concave arc surface, and the inner wall of the concave arc surface is slidably connected to the outer wall of the circular tube (1102); the side wall of the partition (5) near the bottom is fixedly mounted with a connecting pipe (901) connected to the airway (9), and the connecting pipe ( The end of the partition (901) away from the partition (5) is connected to the wedge-shaped nozzle (8), the side wall of the partition (5) located at the air duct (9) is provided with a strip hole, and the inner wall of the strip hole is fixedly sleeved with a metal heat conducting plate (902), the metal heat conducting plate (902) is located on one side of the mold plate (4), the side wall of the heat storage chamber (200) and the first side plate (1) is fixedly penetrated with an air inlet pipe (903), and the air inlet pipe (903) is connected to the air duct (9).

6. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: The side walls of the first side panel (1) and the second side panel (2) located inside the U-shaped panel (4) are fixedly connected to the U-shaped fixing blocks (12), the side walls of the U-shaped fixing blocks (12) are fixedly connected to the side walls of the wedge-shaped nozzle (8), the arc-shaped walls on both sides of the U-shaped fixing blocks (12) are fixedly connected to the inner wall of the U-shaped panel (4), the bottom opening of the U-shaped panel (4) and the two U-shaped fixing blocks (12) form a lower smoke outlet, the gap between the tops of the two U-shaped side panels (3) and the gap between the first side panel (1) and the second side panel (2) form a lower smoke outlet. The upper smoke outlet is formed, and a square porous plate (13) is fixedly sleeved on the inner wall of the upper smoke outlet; the top port of the switching valve (300) is communicated with the lower smoke outlet at the bottom of the ceramic body component (600) below, the CO oxidation chamber (100) is communicated with the upper smoke outlet at the top of the ceramic body component (600) above, the bottom port of the NOx treatment chamber (700) is communicated with the upper smoke outlet at the top of the ceramic body component (600) below, and its top port is communicated with the lower smoke outlet at the bottom of the ceramic body component (600) above.

7. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: A burner is installed inside the CO oxidation chamber (100) for preheating.

8. The device for coordinated treatment of CO and NOx in sintering flue gas according to claim 1, characterized in that: The inner wall of the NOx treatment chamber (700) is arranged in an inwardly concave arc shape, and the arc-shaped inner wall is arranged as a cavity; a solenoid valve (7002) communicating with the cavity of the arc-shaped inner wall is fixedly installed on the side wall of the heat storage chamber (200), the solenoid valve (7002) is connected to an ammonia pipe (7003), and the ammonia nozzle (7001) is connected to the cavity of the arc-shaped inner wall.

9. A method for co-processing CO and NOx in sintering flue gas, characterized in that: The device for co-processing CO and NOx in sintering flue gas according to any one of claims 1 to 8 further comprises a temperature sensor installed on the inner wall of the NOx processing chamber (700), and the steps are as follows: S1, the CO oxidation chamber (100) is preheated, and the internal heat is transferred toward the interior of the heat storage chamber (200). During the preheating process, the two ceramic body components (600) rotate the material feeding mechanism (11) to push the ceramic beads between the mold plate (4) and the partition (5) toward the other side of the partition (5). The ceramic beads between the two partitions (5) continuously creep downward, and the ceramic beads on the other side of the partition (5) flip from the top of the partition (5) into between the two partitions (5). The ceramic beads creep, thereby improving the heat transfer efficiency. When the temperature sensor detects that the temperature of the NOx treatment chamber (700) reaches the set treatment temperature, the preheating is stopped; S2, set three regenerators (200) as A, B and C in sequence; a single regenerator (200) is used in sequence for flue gas NOx treatment, dust removal and purge, and heat storage and smoke exhaust; a smoke inlet pipe (400) transports sintering smoke; a smoke exhaust pipe (500) discharges the treated smoke; a CO oxidation chamber (100) is used for CO treatment; When the heat storage chamber (200) in A is used for smoke intake, the smoke intake pipe (400) and the heat storage chamber (200) are connected by the switching valve (300), the smoke exhaust pipe (500) and the heat storage chamber (200) are disconnected, and the control valve (800) is closed; When the heat storage chamber (200) in B is used for heat storage and smoke exhaust, the smoke inlet pipe (400) and the heat storage chamber (200) are cut off by the switching valve (300), the smoke exhaust pipe (500) and the heat storage chamber (200) are cut through, and the control valve (800) is closed; The smoke inlet pipe (400) transports the sintering flue gas to the heat storage chamber (200) in A, and the sintering flue gas enters the several-shaped plate (4) of the ceramic body assembly (600) below, and flows toward the arc-shaped spring steel (6) through the guide of the wedge-shaped surface at the bottom of the two wedge-shaped nozzles (8); at the same time, the two air ducts (9) in the two partitions (5) respectively supply oxygen and NOx treatment catalyst to the two wedge-shaped nozzles (8), and the oxygen and NOx treatment catalyst are ejected toward the arc-shaped spring steel (6). The oxygen, NOx treatment catalyst and flue gas are synchronously moved upward to bypass the arc-shaped spring steel (6), and the oxygen and NOx treatment catalyst are treated by the Karman vortex street phenomenon. The catalyst and the flue gas are mixed, and at the same time, the driving mechanism (7) continuously drives the arc spring steel (6) to bend elastically, constantly disturbing the airflow to achieve full mixing; the mixed flue gas enters the space between the two partitions (5) from the porous strip plate (401), and the mixed flue gas passes through the ceramic beads of the lower ceramic body assembly (600). The rotating material feeding mechanism (11) causes the ceramic beads to circulate, thereby impacting the mixed flue gas between the ceramic beads downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads wipes off the smoke dust adsorbed on the surface of the ceramic beads, maintaining good thermal performance; The mixed flue gas enters the NOx treatment chamber (700), and the ammonia nozzle (7001) ejects ammonia. The sintering flue gas is subjected to flue gas NOx treatment in the NOx treatment chamber (700), and heat is absorbed during the NOx treatment process. Then the mixed flue gas enters the several-shaped plate (4) of the upper ceramic body assembly (600), and at the same time, the two air passages (9) in the two partitions (5) supply oxygen and CO treatment catalyst to the two wedge-shaped nozzles (8) respectively. The oxygen and CO treatment catalyst are ejected toward the arc spring steel (6). The oxygen, CO treatment catalyst and flue gas are synchronously passed upward around the arc spring steel (6) and mixed by the Karman vortex street phenomenon. At the same time, the driving mechanism (7) continuously drives the arc spring steel (6) to perform elastic bending, continuously The disturbed airflow is fully mixed; the mixed flue gas enters the space between the two partitions (5) from the porous strip plate (401), and the mixed flue gas passes through the ceramic beads of the upper ceramic body component (600). The rotating material feeding mechanism (11) causes the ceramic beads to circulate, thereby impacting the mixed flue gas between the ceramic beads downward, disturbing the mixed flue gas, avoiding the channel effect, and fully mixing and preheating the flue gas. At the same time, the friction between the ceramic beads wipes off the smoke dust adsorbed on the surface of the ceramic beads; at the same time, the untreated NOx is thoroughly treated in the upper ceramic body component (600); S3, the mixed flue gas enters the CO oxidation chamber (100) for CO treatment while releasing heat; S4, the heat and the treated flue gas enter the heat storage chamber (200) in B, the ceramic beads in the heat storage chamber (200) in B keep creeping downward, and the ceramic beads absorb heat; S5, the smoke from the regenerator (200) in B is discharged through the smoke exhaust pipe (500); S6, when the temperature sensor in A detects that the temperature of the NOx treatment chamber (700) has dropped to the set non-treatment temperature due to the heat absorption of the NOx treatment in A, and the temperature sensor in the heat storage chamber (200) in B detects that the temperature of the NOx treatment chamber (700) has reached the set treatment temperature; The heat storage chamber (200) in A is dust-removed and swept, and the smoke inlet pipe (400) and the heat storage chamber (200) are cut off by the switching valve (300), the smoke exhaust pipe (500) and the heat storage chamber (200) are cut off, the control valve (800) is opened, and the dust collector (1000) is operated to return the remaining untreated smoke in the heat storage chamber (200) in A to the smoke inlet pipe (400). At the same time, the ceramic beads circulate, and the friction between the ceramic beads wipes off the smoke adsorbed on the surface of the ceramic beads, and the dust in the heat storage chamber (200) is sucked into the dust collector; The heat storage chamber (200) in B is used for smoke intake processing. The smoke intake pipe (400) and the heat storage chamber (200) are connected by the switching valve (300), the smoke exhaust pipe (500) and the heat storage chamber (200) are disconnected, and the control valve (800) is closed. The heat storage chamber (200) in C is used for heat storage and smoke exhaust. The smoke inlet pipe (400) and the heat storage chamber (200) are cut off by the switching valve (300), the smoke exhaust pipe (500) and the heat storage chamber (200) are connected, and the control valve (800) is closed. S7, then C takes in smoke for treatment, A stores heat for exhaust, B removes dust and sweeps, and the cycle continues.

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