Smelting tail gas treatment equipment

Abstract

The utility model discloses smelting tail gas treatment equipment, and relates to the technical field of tail gas treatment, the smelting tail gas treatment equipment comprises a tail gas treatment tower, the top of the inner wall of the tail gas treatment tower is rotatably connected with a rotary spraying head, the bottom surface of the rotary spraying head is fixedly connected with a linkage rod, and the outer wall, close to the bottom end, of the linkage rod is fixedly connected with a rotary dust catching net; an adaptive groove is formed in the end, away from the linkage rod, of the rotary dust catching net, and a spring telescopic rod is movably and fixedly connected to the inner wall of the adaptive groove. According to the utility model, the rotary spraying head is matched with the cooling liquid, so that the temperature of tail gas can be reduced, part of water-soluble pollutants can be dissolved, and gaseous pollutants can be condensed. The rotary dust catching net can catch large particles in the rotating process, stir airflow to raise small particles and then intercept the small particles again, the dust catching area can be adjusted through centrifugal force, meanwhile, the vibration filter net further conducts blocking and filtering, the tail gas purification efficiency is greatly improved through cooperation of multiple links, and the content of pollutants in tail gas is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas treatment technical field, concretely relates to smelting tail gas treatment equipment. BACKGROUND

[0002] In the smelting industry, tail gas treatment has been a difficult problem to be solved, especially in the purification of tail gas, the traditional technology has many defects.

[0003] I. Temperature and pollution treatment problems

[0004] Temperature control is not strong: the high temperature of tail gas can have adverse effects on subsequent purification equipment. The traditional cooling method such as simple air cooling is restricted by environmental temperature and heat dissipation efficiency, and the cooling effect is poor in high temperature environment, and it is difficult to reduce the tail gas temperature to the range suitable for the stable operation of subsequent purification equipment. The ordinary spray cooling, because the spray device is designed simply, the contact area of the cooling liquid with the tail gas is limited, the gas-liquid heat exchange efficiency is low, the tail gas heat cannot be fully absorbed, and the tail gas temperature is high, which affects the purification effect.

[0005] Pollution treatment is inefficient:

[0006] Water-soluble pollutants: the traditional spray device nozzle is designed poorly, the cooling liquid cannot be uniformly and densely sprayed, the contact area with the tail gas is small, and the gas-liquid stays in the spray tower for a short time, so the reaction efficiency is low, resulting in that the water-soluble pollutants cannot be fully dissolved, and a large amount of untreated tail gas is discharged.

[0007] Gaseous pollutants: the previous condensing equipment is simple in structure and low in condensing efficiency, which cannot meet the condensing demand of a large amount of gaseous pollutants in smelting tail gas, so a large amount of harmful gas is directly discharged without treatment.

[0008] II. Shortcomings of particulate matter capture

[0009] Particle size is limited: common ordinary filter screen and cyclone dust collector have particle size limitation when capturing smelting tail gas particulate matter. Ordinary filter screen can only intercept large particle size particles, and has no effect on tiny particles; the separation efficiency of cyclone dust collector for tiny particles with particle size less than 10 microns is greatly reduced, resulting in that a large amount of tiny particles are discharged with tail gas, which affects air quality.

[0010] Secondary pollution: in the tail gas treatment process, unstable airflow can make the tiny particles that have settled again. In the traditional equipment, when the tail gas flows in the pipeline or treatment tower, factors such as flow rate change and airflow disturbance often make the tiny particles that have settled at the bottom of the equipment or attached to the filter screen again involved in the airflow, forming secondary pollution, increasing the difficulty of tail gas treatment, and reducing the purification effect.

[0011] Because the traditional smelting tail gas treatment technology has many disadvantages in the above-mentioned purified tail gas, the equipment is particularly key through the high-efficiency purification mode of the cooperation of multiple components such as the rotary spray head, the rotary dust catcher, and the vibrating filter screen, and effectively solves various problems in the tail gas purification. Content of the utility model

[0012] The utility model discloses a smelting tail gas treatment equipment to solve the problems in the above-mentioned background art.

[0013] To solve the above-mentioned technical problem, the utility model adopts the technical scheme of:

[0014] The smelting tail gas treatment equipment includes a tail gas treatment tower, the inner wall top of the tail gas treatment tower is rotationally connected with a rotary spray head, the bottom surface of the rotary spray head is fixedly connected with a linkage rod, and the outer wall close to the bottom end of the linkage rod is fixedly connected with a rotary dust catcher.

[0015] One end of the rotary dust catcher away from the linkage rod is provided with an adaptive slot, the inner wall of the adaptive slot is movably fixedly connected with a spring telescopic rod, the extending end of the spring telescopic rod is fixedly connected with an inner built-in net, one side of the inner built-in net is fixedly connected with a side shift net plate, the side away from the side shift net plate of the inner built-in net is movably inserted with the inner wall of the adaptive slot, and the top of the rotary spray head is provided with a driving assembly for driving the rotary spray head to rotate.

[0016] The further improvement of the utility model technical scheme is that: the driving assembly includes a belt pulley, the belt pulley is rotationally penetrated to the inner wall top of the tail gas treatment tower through the shaft seat bottom end, the bottom end of the belt pulley is fixedly connected with the upper surface of the rotary spray head, the outer wall of the belt pulley is drivingly connected with a servo motor through a belt, and the top center of the rotary spray head is fixedly connected with a rotary sealing joint.

[0017] The further improvement of the utility model technical scheme is that: the inner wall of the tail gas treatment tower is fixedly connected with a mounting ring, the upper surface of the mounting ring is fixedly connected with a vibrating spring, the top of the vibrating spring is fixedly connected with a vibrating filter screen, the outer wall of the vibrating filter screen is movably connected with the inner wall of the tail gas treatment tower, the bottom surface of the vibrating filter screen is overlapped with a scraping strip, and one end of the scraping strip is fixedly connected with the outer wall of the linkage rod.

[0018] The further improvement of the utility model technical scheme is that: the top of the tail gas treatment tower is fixedly connected with an air outlet pipe.

[0019] The further improvement of the utility model technical scheme is that: the lower portion of the rotary dust catcher is provided with a filter bottom net, and the filter bottom net is fixedly connected to the inner wall close to the bottom end of the tail gas treatment tower.

[0020] The further improvement of the technical scheme of the utility model lies in that the air inlet pipe is fixedly connected to one side of the tail gas treatment tower close to the bottom end, and the drain pipe is fixedly connected to the other side of the tail gas treatment tower close to the bottom end.

[0021] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0022] 1. The smelting tail gas treatment equipment provided by the utility model can not only reduce the tail gas temperature, dissolve part of water-soluble pollutants, but also condense gaseous pollutants through the cooperation of the rotary spray head and the cooling liquid.

[0023] 2. The smelting tail gas treatment equipment provided by the utility model drives the scraping strip to scrape the bottom surface of the vibration filter screen through the linkage rod, prevents the filter holes from being blocked; the cross section of the rotary dust catching net is corrugated, and the spray pipe is arranged to wash the surface of the rotary dust catching net, remove dust particles, reduce the equipment maintenance frequency, ensure long-term stable operation of the equipment, and reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural detail schematic view of the utility model;

[0025] Figure 2 It is an enlarged schematic view of the structure at A of the utility model;

[0026] Figure 3 It is a structure schematic view of the rotary dust catching net of the utility model;

[0027] Figure 4 It is an enlarged schematic view of the structure at B of the utility model.

[0028] In the drawing: 1, tail gas treatment tower; 2, rotary spray head; 3, vibration filter screen; 4, linkage rod; 5, rotary dust catching net; 6, filter bottom net; 7, air inlet pipe; 8, drain pipe; 9, air outlet pipe; 10, belt pulley; 11, rotary sealing joint; 12, servo motor; 13, scraping strip; 14, vibration spring; 15, side moving net plate; 16, spring telescopic rod; 17, built-in net; 18, adaptive groove. DETAILED DESCRIPTION

[0029] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrangement" "installation" "link" "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled in the art, the above-mentioned terms can be understood in the utility model with the specific meaning of the specific situation.

[0030] The utility model will be further described in detail in combination with examples:

[0031] Example 1

[0032] As Figures 1-4 The utility model provides smelting tail gas treatment equipment, including tail gas treatment tower 1, the inner wall top of tail gas treatment tower 1 is rotatably connected with rotary shower nozzle 2, the bottom of rotary shower nozzle 2 is fixedly connected with linkage rod 4, the outer wall of linkage rod 4 near the bottom end is fixedly connected with rotary dust screen 5;

[0033] The one end of rotary dust screen 5 away from linkage rod 4 is provided with adaptive slot 18, the inner wall of adaptive slot 18 is movably fixedly connected with spring telescopic rod 16, the protruding end of spring telescopic rod 16 is fixedly connected with built-in net 17, one side of built-in net 17 is fixedly connected with side shift net plate 15, one side of built-in net 17 away from side shift net plate 15 is movably inserted with the inner wall of adaptive slot 18, the top of rotary shower nozzle 2 is provided with the drive assembly for driving it to rotate.

[0034] Example 2

[0035] As Figures 1-4 On the basis of example 1, the utility model provides technical scheme: preferably, drive assembly includes pulley 10, the inner wall top of tail gas treatment tower 1 is rotatably penetrated to the bottom end of pulley 10 through shaft seat, the bottom of pulley 10 is fixedly connected with the upper surface of rotary shower nozzle 2, the outer wall of pulley 10 is drivenly connected with servo motor 12 through belt, the top center of rotary shower nozzle 2 is fixedly connected with rotary sealing joint 11.

[0036] The inner wall of tail gas treatment tower 1 is fixedly connected with mounting ring, the upper surface of mounting ring is fixedly connected with vibration spring 14, the top of vibration spring 14 is fixedly connected with vibration filter screen 3, the outer wall of vibration filter screen 3 is movably connected with the inner wall of tail gas treatment tower 1, the bottom of vibration filter screen 3 is overlapped with scraping strip 13, one end of scraping strip 13 is fixedly connected with the outer wall of linkage rod 4.

[0037] The top of tail gas treatment tower 1 is fixedly connected with gas outlet pipe 9.

[0038] The lower part of the rotating dust collection net 5 is provided with a filter bottom net 6 which is fixedly connected to the inner wall of the tail gas treatment tower 1 near the bottom end.

[0039] The side of the tail gas treatment tower 1 near the bottom end is fixedly connected with an air inlet pipe 7, and the other side of the tail gas treatment tower 1 near the bottom end is fixedly connected with a drain pipe 8.

[0040] The working principle of the smelting tail gas treatment equipment will be described below.

[0041] As shown in Figures 1-4 use, the tail gas is introduced into the tail gas treatment tower 1 through the air inlet pipe 7, and the rotating sealing joint 11 is connected with a cooling liquid conveying device. After the tail gas enters, it is in contact with the cooling liquid sprayed downward by the rotating spray head 2, and the cooling liquid absorbs the heat of the tail gas, so that the temperature of the tail gas is reduced, and part of the water-soluble pollutants is dissolved in the cooling liquid, and some gaseous pollutants are condensed into liquid or solid state, which is convenient for subsequent treatment.

[0042] At the same time, the power supply is connected to start the servo motor 12, so that it drives the belt pulley 10 to rotate through the belt, and the belt pulley 10 drives the rotating spray head 2 and the linkage rod 4 to rotate. The linkage rod 4 drives the rotating dust collection net 5 to rotate in the process of rotation, and the rotating dust collection net 5 can capture large particles in the tail gas in the process of rotation, and can also stir the airflow to make some small particles that have settled again. The rotating dust collection net 5 can intercept these particles to further reduce the content of particulate matter in the tail gas and improve the overall purification effect of the tail gas, thereby reducing the processing burden of the subsequent purification system.

[0043] When the large particles of dust are captured by the rotating dust collection net 5, the cooling liquid sprayed by the rotating spray head 2 falls to the surface of the rotating dust collection net 5, which can contact the large particles of dust and increase the mixing efficiency of the dust and the cooling liquid. When the rotating speed of the linkage rod 4 increases, the side shift net plate 15 will be pulled out by the spring telescopic rod 16 under the action of centrifugal force, and then the built-in net 17 will be separated from the adaptive slot 18, so as to increase the area of the rotating dust collection net 5 and improve the dust capture efficiency.

[0044] The vibration filter screen 3 blocks and filters the tail gas in the process of rising. The linkage rod 4 drives the scraper 13 to scrape the bottom surface of the vibration filter screen 3 in the process of rotation, so as to avoid the blockage of the filter holes.

[0045] The cross section of the rotating dust collection net 5 is corrugated. A spray pipe is arranged between the rotating dust collection net 5 and the vibration filter screen 3, which is used to directly flush the surface of the rotating dust collection net 5 to remove the dust particles on the surface.

[0046] The utility model has made the detailed description to the utility model generally above, but can make some modification or improvement to it on the basis of the utility model, this is obvious to the general skilled person in the technical field. Therefore, the modification or improvement without departing from the utility model thought spirit, all are within the protection scope of the utility model.

Claims

1. Smelting off-gas treatment plant comprising an off-gas treatment tower (1), characterised in that: The inner wall top of the tail gas treatment tower (1) is rotationally connected with a rotating spray head (2), the bottom surface of the rotating spray head (2) is fixedly connected with a linkage rod (4), and the outer wall of the linkage rod (4) close to the bottom end is fixedly connected with a rotating dust collection net (5). The end of the rotating dust collection net (5) away from the linkage rod (4) is provided with an adaptive groove (18), the inner wall of the adaptive groove (18) is movably fixedly connected with a spring telescopic rod (16), the extending end of the spring telescopic rod (16) is fixedly connected with an inner built-in net (17), one side of the inner built-in net (17) is fixedly connected with a side moving net plate (15), the side of the inner built-in net (17) away from the side moving net plate (15) is movably inserted into the inner wall of the adaptive groove (18), and the top of the rotating spray head (2) is provided with a driving assembly for driving the rotating spray head (2) to rotate.

2. The smelter off-gas treatment plant according to claim 1, characterized in that: The driving assembly comprises a belt pulley (10), the belt pulley (10) is rotationally penetrated into the inner wall top of the tail gas treatment tower (1) through the shaft seat bottom end, the bottom end of the belt pulley (10) is fixedly connected with the upper surface of the rotating spray head (2), the outer wall of the belt pulley (10) is drivingly connected with a servo motor (12) through a belt, and the top center of the rotating spray head (2) is fixedly connected with a rotating sealing joint (11).

3. The smelter off-gas treatment plant of claim 1, wherein: The inner wall of the tail gas treatment tower (1) is fixedly connected with a mounting ring, the upper surface of the mounting ring is fixedly connected with a vibration spring (14), the top of the vibration spring (14) is fixedly connected with a vibration filter screen (3), the outer wall of the vibration filter screen (3) is movably connected with the inner wall of the tail gas treatment tower (1), the bottom surface of the vibration filter screen (3) is overlapped with a scraping strip (13), and one end of the scraping strip (13) is fixedly connected with the outer wall of the linkage rod (4).

4. The smelter off-gas treatment plant of claim 1, wherein: The top of the tail gas treatment tower (1) is fixedly connected with an air outlet pipe (9).

5. The smelter off-gas treatment plant of claim 1, wherein: A filter bottom net (6) is arranged below the rotating dust collection net (5), and the filter bottom net (6) is fixedly connected to the inner wall close to the bottom end of the tail gas treatment tower (1).

6. The smelter off-gas treatment plant of claim 1, wherein: One side of the tail gas treatment tower (1) close to the bottom end is fixedly connected with an air inlet pipe (7), and the other side of the tail gas treatment tower (1) close to the bottom end is fixedly connected with a drain pipe (8).

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