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CN-121003888-B - Sintering pellet flue gas adsorption device

CN121003888BCN 121003888 BCN121003888 BCN 121003888BCN-121003888-B

Abstract

The invention relates to the technical field of flue gas adsorption treatment, and discloses a sintered pellet flue gas adsorption device, which comprises an adsorption tower, wherein an air inlet pipe and an air outlet pipe are arranged on the surface of the adsorption tower, a box body is arranged on one side of the adsorption tower, a supporting frame is fixedly connected with the inner wall of the adsorption tower, the invention conveys liquid agent to a spraying component I and a spraying component II through a liquid supply device, when flue gas passes through a filling material, the flue gas enters a first spraying area, the driving assembly drives the first spraying assembly to rotate and spray, the auxiliary filling material primarily treats harmful gas in the smoke, the primarily treated smoke is collected into the central hollow pipe of the second spraying area through the lower cover, the second spraying assembly sprays, the smoke is in the relatively airtight hollow central pipe, the smoke diffusion can be reduced, the smoke is always in the action range of the liquid agent, and the smoke is fully contacted with the liquid agent for the second time, so that the content of dust and harmful gas in the smoke is effectively reduced.

Inventors

  • PENG BO
  • LI XUEJUN
  • YU ZIHUA

Assignees

  • 中国能源建设集团湖南省电力设计院有限公司

Dates

Publication Date
20260512
Application Date
20250929

Claims (7)

  1. 1. The sintering pellet flue gas adsorption device comprises an adsorption tower (1) and is characterized in that an air inlet pipe (2) and an air outlet pipe (3) are arranged on the surface of the adsorption tower (1), a box body (4) is arranged on one side of the adsorption tower (1), a supporting frame (8) is fixedly connected to the inner wall of the adsorption tower (1), a filling material (9) is placed on the supporting frame (8), and a processing mechanism (7) is arranged on the inner wall of the adsorption tower (1); The treatment mechanism (7) comprises an upper cover (72) and a lower cover (71) which are arranged in the inner wall of the adsorption tower (1), longitudinal sections of the upper cover (72) and the lower cover (71) are in conical arrangement with a wide port and a narrow port, the narrow port ends are mutually butted, a hollow middle pipe (73) is fixedly connected between the narrow port ends, a first spraying area is formed between the lower cover (71) and the filling material (9), a second spraying area is formed in the inner wall of the hollow middle pipe (73), a first spraying assembly (74) is arranged in the lower cover (71), a second spraying assembly (75) is arranged in the inner wall of the hollow middle pipe (73), and a liquid supply device (5) is arranged on the surface of the box body (4) and used for conveying liquid agent to the first spraying assembly (74) and the second spraying assembly (75); the first spraying component (74) comprises a plurality of hollow pipes (741) rotationally connected with the inner wall of the lower cover (71), the surface of the hollow pipe (741) is fixedly connected with a first spraying head (742) and a second spraying head (743), the first spraying head (742) comprises a first circular ring head (7421) fixed on the surface of the hollow pipe (741), a plurality of groups of inclined holes (7422) are formed on the surface of the first circular ring head (7421), the second spraying head (743) comprises a second circular ring head (7431) fixed on the surface of the hollow pipe (741), the lower surface of the second ring head (7431) is provided with a plurality of straight holes (7432); The inner side of the upper cover (72) is provided with a limiting assembly (76), the limiting assembly (76) comprises a plurality of hollow sleeves (761) fixed in the inner wall of the upper cover (72), the inner wall of each hollow sleeve (761) is connected with a sliding frame (762) in a sliding mode, the surfaces of the sliding frames (762) are fixedly connected with hollow limiting heads (764), the hollow limiting heads (764) are inserted into hollow tubes (73), one sides, corresponding to the inner wall of each hollow sleeve (761), of the sliding frames (762) are fixedly connected with springs (763), the hollow limiting heads (764) are arranged in a tapered mode, tip ends are inserted into the hollow tubes (73), the surfaces of the hollow limiting heads (764) are provided with a plurality of auxiliary holes (768), the surfaces of the hollow limiting heads (764) are fixedly connected with two L-shaped rods (765), the inner walls of the hollow tubes (73) are provided with two groove bodies (767) for inserting the L-shaped rods (765), and the inner walls of the L-shaped rods (765) are rotatably connected with rolling wheels (766) for contacting the inner walls (767); the outer sides of the lower cover (71) and the hollow middle pipe (73) are provided with driving assemblies (77) for controlling the first spraying assembly (74) to rotationally spray, and the inner wall of the adsorption tower (1) is fixedly connected with a demister (10) and is positioned above the upper cover (72).
  2. 2. The sintering pellet flue gas adsorption device according to claim 1, wherein the second spraying component (75) comprises a spraying pipe (751) fixed in the inner wall of the hollow pipe (73), a cavity (752) is formed in the inner wall of the spraying pipe (751), a plurality of groups of spraying holes (753) are formed in the inner side of the spraying pipe (751) at equal intervals, and the spraying holes (753) are communicated with the cavity (752).
  3. 3. The sintering pellet flue gas adsorption device according to claim 2, wherein the liquid supply device (5) comprises a pump body (51) arranged on the surface of the box body (4), an input end and an output end of the pump body (51) are fixedly connected with a suction pipe (52) and a liquid discharge pipe (53) respectively, the other end of the suction pipe (52) stretches into the box body (4), a connecting column (54) is fixedly connected with the surface of the upper cover (72), an annular pipe (55) is fixedly connected with the surface of the connecting column (54), the other end of the liquid discharge pipe (53) is communicated with the annular pipe (55), a plurality of first connecting pipes (56) and a second connecting pipe (57) are fixedly connected with the surface of the annular pipe (55), the inner walls of hollow pipes (741) corresponding to the first connecting pipes (56) are rotatably connected, and the other ends of the second connecting pipes (57) penetrate through the hollow pipes (73) and are fixedly connected with the spraying pipes (751), and the second connecting pipes (57) are communicated with the cavity (752).
  4. 4. The sintering pellet flue gas adsorption device according to claim 1, wherein the driving assembly (77) comprises a first gear (771) fixed on the surface of the hollow tube (741), a gear ring (772) is rotatably connected to the outer surface of the hollow tube (73), the gear ring (772) is in meshed connection with the first gear (771), a driving motor (773) is mounted on the outer surface of the lower cover (71), a second gear (774) is fixedly connected to the output end of the driving motor (773), and the second gear (774) is in meshed connection with the gear ring (772).
  5. 5. The sintering pellet flue gas adsorption device according to claim 3, wherein the surface of the annular tube (55) is fixedly connected with a telescopic tube (58), and the other end of the telescopic tube (58) is fixedly connected with a hollow limiting head (764).
  6. 6. The sintering pellet flue gas adsorption device according to claim 1, wherein an auxiliary device (6) is arranged on the surface of the adsorption tower (1), the auxiliary device (6) comprises a guide plate (64) fixed in the inner wall of the adsorption tower (1), an auxiliary box (61) is fixedly connected to the outer surface of the adsorption tower (1), a filter box (66) is inserted into the inner wall of the auxiliary box (61), an iron net frame (65) is fixedly connected to the inner wall of the auxiliary box (61) and used for supporting the filter box (66), an inflow port (62) and an outflow port (63) are formed in the surface of the adsorption tower (1), the inflow port (62) is used for introducing liquid led out by the guide plate (64) into the filter box (66), and the outflow port (63) discharges the liquid filtered by the filter box (66) into the adsorption tower (1).
  7. 7. The sintered pellet flue gas adsorbing device as set forth in claim 6, wherein the inner wall of the filter box (66) is inserted with a bolt (67), and the bolt (67) is in threaded connection with the inner wall of the auxiliary box (61).

Description

Sintering pellet flue gas adsorption device Technical Field The invention relates to the technical field of flue gas adsorption treatment, in particular to a sintered pellet flue gas adsorption device. Background In the iron and steel industry, sintering and pelletizing are two core iron ore powder pretreatment processes, and the common aim of the two processes is to process fine-grained iron ore powder into massive raw materials (called "sinter" or "pellet") with certain granularity, strength and metallurgical properties, so that qualified "burden" is provided for blast furnace ironmaking, and therefore, the sintering and pelletizing are often called as "sintering and pelletizing", in short terms, the sintering and pelletizing are important intermediate links for connecting iron ore exploitation and iron and steel smelting, and the product is one of main raw material sources for blast furnace ironmaking. In the production process of the sintered pellets, a large amount of harmful smoke is generated, and an adsorption tower is often used for adsorbing and purifying the smoke. In the use process of the existing adsorption tower, the flue gas mainly passes through the filler and then passes through the spray washing area, so that the flue gas treatment is realized. However, the distribution of the filler inside the filler is difficult to be absolutely uniform, and the flue gas can be split due to different path resistances in the upward flowing process, so that a high-concentration gas outlet area is formed due to the fact that the flue gas in the small-resistance area is faster in flow speed and larger in flow, and even a gas flow stagnation area appears in the large-resistance area due to the fact that the flue gas is low in flow speed and small in flow, and finally the phenomenon that the gas outlet intensity of each part is uneven when the flue gas is discharged from the upper part of the filler is caused. The problem of uneven air outlet can directly influence the treatment effect of a subsequent spray washing area. For a high-concentration gas outlet area in which the flue gas is concentrated, the spraying agent is difficult to fully contact with a large amount of flue gas in a short time, part of flue gas can rapidly penetrate and flow, and the flue gas is not effectively adsorbed and washed by the agent to enter the next link, so that the problem of pollutant residue and influence on the treatment effect is solved. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides a sintered pellet flue gas adsorption device, which solves the problems that the distribution of the filler inside the existing filler is difficult to be absolutely uniform, so that when flue gas is discharged from the upper part of the filler, the uneven gas outlet intensity of each part is caused, and the uneven gas outlet can directly influence the treatment effect of a subsequent spray washing area. (II) technical scheme The sintering pellet flue gas adsorption device comprises an adsorption tower, wherein an air inlet pipe and an air outlet pipe are arranged on the surface of the adsorption tower, a box body is arranged on one side of the adsorption tower, a support frame is fixedly connected with the inner wall of the adsorption tower, a filler is placed on the support frame, and a processing mechanism is arranged on the inner wall of the adsorption tower; The treatment mechanism comprises an upper cover and a lower cover which are arranged in the inner wall of the adsorption tower, the upper cover and the lower cover are in conical arrangement, the narrow opening ends mutually correspond, a hollow middle pipe is fixedly connected between the narrow opening ends, a first spraying area is formed between the lower cover and the filling material, a second spraying area is formed on the inner wall of the hollow middle pipe, a spraying component I is arranged in the lower cover, a spraying component II is arranged on the inner wall of the hollow middle pipe, a liquid supply device is arranged on the surface of the box body and used for conveying liquid agent to the spraying component I and the spraying component II, a limiting component is arranged on the inner side of the upper cover and used for limiting the air outlet speed of the hollow middle pipe, a driving component is arranged on the outer side of the lower cover and the hollow middle pipe and used for controlling the spraying component I to rotate and spray, and a demister is fixedly connected to the inner wall of the adsorption tower and is positioned above the upper cover. Preferably, the first spraying component comprises a plurality of hollow pipes which are rotationally connected with the inner wall of the lower cover, and the surfaces of the hollow pipes are fixedly connected with a first spray head and a second spray head. Preferably, the first nozzle comprises a first annular head fixed on the surface