CN210215235U - High-efficient dust collector of quenching tower - Google Patents

Abstract

The utility model discloses a high-efficiency dust removal device of a coke quenching tower, which comprises a coke quenching chamber and a dust removal chamber, wherein a coke quenching car is placed in the coke quenching chamber, a coke quenching spray pipe is arranged in the coke quenching chamber above the coke quenching car, a primary dust removal section, a secondary dust removal section, a tertiary dust removal section and a demister are sequentially arranged in the dust removal chamber from bottom to top, and the primary dust removal section comprises two filter grids and a first spray pipe which are arranged in the dust removal chamber; the secondary dust removal section comprises a louvered dust blocking mechanism arranged in the dust removal chamber and a second spraying pipe arranged above the louvered dust blocking mechanism, and the tertiary dust removal section comprises a partition baffle and a third spraying pipe arranged on the inner wall of the dust removal chamber; the top level of clean room is provided with the blast pipe, installs the sedimentation pipe on the blast pipe, and the bottom of sedimentation pipe is provided with the blow off pipe. The utility model discloses not only can reach the purpose that the dust removal is thorough, dust removal effect is showing, dust collection efficiency is high, have structural design reasonable, investment cost low, convenient to use, advantage reliable in operation moreover.

Description

High-efficient dust collector of quenching tower

Technical Field

The utility model belongs to the technical field of coking equipment, concretely relates to high-efficient dust collector of coke quenching tower.

Background

Coal is subjected to a high-temperature carbonization process to generate coke, the process is called coking, the coking process is carried out in a coking furnace, and the produced coke is used for metallurgy. Quenching coke is an essential step in the coal coking process, and the refined red hot coke needs to be cooled to a temperature convenient for transportation and storage. When the coking is finished, the temperature of the coke is generally 950-1100 ℃, and the temperature needs to be reduced to below 250 ℃ through quenching. At present, a coke quenching mode commonly adopted by domestic coking gas making plants is a wet coke quenching process. The wet quenching is to guide the incandescent coke pushed out from the coking chamber into a quenching car through a coke guide and to be pulled into a quenching tower through an electric locomotive for water spraying quenching. During the quenching process, a large amount of coke powder is entrained in steam generated after the quenching water is contacted with the incandescent coke. Generally, about 1000g of coke powder generated in each ton of coke during the quenching process is carried away by quenching steam, the steam forms a mixed gas flow with a large amount of air sucked from openings at two ends of a quenching tower, and a large amount of water drops and the coke powder are carried to overflow from the top of the tower, so that the atmosphere and the surrounding environment are seriously polluted. At present, the common dust removal technology for domestic wet quenching is that a baffling type wood grid dust catcher is arranged at the top in a quenching tower, a large amount of coke powder and water mist generated during quenching can be caught, the dust removal efficiency is about 60%, after the coke powder is caught by a baffle plate, the emission concentration of the dust is about 200-400 g/t, the emission standard of 50g per ton of coke specified by the state cannot be met, the particle size of the discharged dust is mostly less than 10 mu m, floating dust is easily formed by pollutants, the concentration of PM2.5 in the surrounding area of a coke-quenching plant is improved, and the serious pollution to the surrounding environment can be brought. Therefore, it is objectively needed to develop a high-efficiency dust removing device of a coke quenching tower, which has the advantages of reasonable structural design, low investment cost, convenient use, reliable operation, obvious dust removing effect and high dust removing efficiency.

Disclosure of Invention

An object of the utility model is to provide a high-efficient dust collector of coke quenching tower that structural design is reasonable, investment cost is low, convenient to use, operation are reliable, dust removal effect is showing, and dust collection efficiency is high.

The utility model aims at realizing the coke quenching method, which comprises a coke quenching chamber and a dust removing chamber arranged above the coke quenching chamber, wherein a coke quenching car is placed in the coke quenching chamber, a coke quenching spray pipe is arranged in the coke quenching chamber above the coke quenching car, a primary dust removing section, a secondary dust removing section, a tertiary dust removing section and a demister are sequentially arranged in the dust removing chamber from bottom to top, the primary dust removing section comprises two filter grids which are arranged in the dust removing chamber at intervals from top to bottom, and a first spray pipe is arranged between the two filter grids;

the second-stage dust removal section comprises louver type dust blocking mechanisms symmetrically installed in the dust removal chamber and second spray pipes correspondingly installed above the louver type dust blocking mechanisms, each louver type dust blocking mechanism comprises a rectangular frame and a plurality of high-temperature-resistant metal blades, the rectangular frame is fixedly installed on the inner wall of the dust removal chamber through a support frame, a plurality of rows of installation holes with the same interval are symmetrically processed on the left side and the right side of the rectangular frame, each high-temperature-resistant metal blade is fixedly installed on one transmission shaft through a shaft sleeve, two ends of each transmission shaft are respectively rotatably installed in each row of installation holes through deep groove ball bearings, a gear is meshed with the same end of each transmission shaft extending out of the rectangular frame, a driving motor is installed at the other end of one transmission shaft, each second spray pipe comprises a water inlet branch pipe and a plurality of communicating pipes installed below the water inlet branch pipe, and the communicating pipes are installed on, a horizontal pipe is arranged below each communicating pipe, a plurality of high-pressure nozzles are arranged at the bottom of each horizontal pipe, and the high-pressure nozzles are positioned right above the high-temperature-resistant metal blades;

the three-stage dust removal section comprises a partition baffle fixedly arranged on the inner wall of the dust removal chamber and a third spray pipe penetrating in the partition baffle, the partition baffle is of a structure with high edge and low middle, an air outlet channel is processed at the center of the partition baffle, and a nozzle is arranged at the edge of the air outlet channel and communicated with the third spray pipe; the first spraying pipe, the water inlet branch pipe and the third spraying pipe are all communicated with the water inlet main pipe; the top level of clean room is provided with the blast pipe, installs the sedimentation pipe on the blast pipe, and the bottom of sedimentation pipe is provided with the blow off pipe, installs the blowoff valve on the blow off pipe.

Furthermore, a folding metal filter screen is arranged on the filter grid below the first spray pipe.

Further, filter grille includes outer carriage and equidistant evenly installs the grid stick in outer carriage, outer carriage fixed mounting is on the inner wall of clean room, the grid stick is long and thin round bar form, and the interval between two adjacent grid sticks is 1 ~ 2 mm.

Preferably, the cross-sectional shape of the settling tube is V-shaped, W-shaped or semicircular.

Further, the demister is a baffle demister or a wire mesh demister.

Furthermore, a water inlet valve and a pressure gauge are arranged on the first spray pipe, the water inlet branch pipe and the third spray pipe.

The utility model discloses the beneficial effect who produces is: firstly, the arranged primary dust removal section can block and spray steam for the first time, the ascending flowing direction of the steam is changed, the airflow distribution is more uniform, the contact area of flue gas and spray water is increased, meanwhile, the staying and dust removal time of the steam in the dust removal chamber is increased, and after the blocking and spraying of the primary dust removal section, about 20% of coke powder in the steam can be blocked and sprayed and then settled in the coke quenching chamber; secondly, the set secondary dust removal section can carry out secondary blocking and spraying on the rising steam, further change the direction of steam airflow and slow down the rising speed of the steam airflow, coke powder particles in the steam are separated from the steam after impacting the high-temperature resistant metal blades, the other part of the coke powder particles continuously rise from the high-temperature resistant metal blades, under the secondary spraying action of the second spraying pipe, the coke is settled in the coke quenching chamber due to the increase of the dead weight, and meanwhile, the high-temperature resistant metal blade on the louver type dust blocking mechanism can be automatically opened and closed, during the use process, the opening degree of the high-temperature resistant metal blade can be reasonably regulated and controlled according to the content of the coke powder in the steam, thereby controlling the flow speed of the steam, and after the blocking and spraying of the secondary dust removal section, about 65 percent of coke powder in the steam can be blocked and sprayed and then settled into the coke quenching chamber; thirdly, the third dust removal section can block and spray rising steam for the third time, when the rising steam enters the air outlet channel, the nozzle can spray water mist into the air outlet channel, and the water mist can quickly adsorb fine dust and harmful impurities still mixed in the steam, so that the coke powder in the steam can be comprehensively treated and purified, and about 10% of the coke powder in the steam can be blocked and sprayed and then settled into a coke quenching chamber after the blocking and spraying of the third dust removal section; fourthly, after the steam after the tertiary interception and spraying is discharged from the exhaust pipe, because the settling tube can change the flow direction of steam again, when can slowing down steam flow speed, can also let the coke breeze granule that probably mix with in the steam subside the bottom of settling tube, only need regularly open the blowoff valve, with the dust discharge of settling tube bottom can. To sum up, the utility model discloses a not multi-stage dust removal measure of isostructure not only can reach the purpose that the dust removal is thorough, dust removal effect is showing, dust collection efficiency is high, has structural design reasonable moreover, investment cost low, convenient to use, advantage of reliable operation, easily uses widely.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic front view of the louvered dust blocking mechanism 5;

FIG. 3 is a schematic top view of the louvered dust-blocking mechanism 5

Fig. 4 is a schematic structural view of the second shower pipe 6;

in the figure, 1-a coke quenching chamber, 2-a coke quenching spray pipe, 3-a filter grid, 4-a folding metal filter screen, 5-a louver type dust blocking mechanism, 51-a rectangular frame, 52-a high temperature resistant metal blade, 53-a shaft sleeve, 54-a transmission shaft, 55-a support frame, 56-a deep groove ball bearing, 57-a driving motor, 58-a gear, 6-a second spray pipe, 61-a communicating pipe, 62-a horizontal pipe, 63-a high pressure spray head, 64-a spray support frame, 7-a partition baffle, 8-a demister, 9-a dust removal chamber, 10-an exhaust pipe, 11-a settling pipe, 12-a blow-off pipe, 13-a blow-off valve, 14-a third spray pipe, 15-a spray nozzle, 16-an air outlet channel and 17-a water inlet branch pipe, 18-a first spray pipe, 19-a main water inlet pipe and 20-a coke quenching car.

Detailed Description

The following further describes the present invention with reference to the attached drawings, but the present invention is not limited in any way, and any changes or improvements based on the teaching of the present invention all belong to the protection scope of the present invention.

As shown in figures 1-4, the utility model discloses a coke quenching room 1 and the clean room 9 of setting in coke quenching room 1 top have placed coke quenching car 20 in the coke quenching room 1, are provided with coke quenching shower 2 in the coke quenching room 1 of coke quenching car 20 top, from the bottom up has set gradually one-level dust removal section, second grade dust removal section, tertiary dust removal section and demister 8 in the clean room 9, and after steam and spray water contact, the sulphide that is mingled with in the steam can produce the foam spraying the in-process, utilizes impurity and the tiny dust that mix with in demister 8 can further detach steam.

The one-level dust removal section comprises two filter grids 3 which are arranged in a dust removal chamber 9 at intervals from top to bottom, a first spray pipe 18 is arranged between the two filter grids 3, and the first spray pipe 18 can be formed by adopting a structure used in the existing spray dust removal technology.

The second grade dust removal section includes that the symmetry is installed at the second shower 6 of shutter dust blocking mechanism 5 in clean room 9 with corresponding the installation in shutter dust blocking mechanism 5 top, shutter dust blocking mechanism 5 includes rectangular frame 51 and a plurality of high temperature resistant metal blade 52, rectangular frame 51 passes through support frame 55 fixed mounting on the inner wall of clean room 9, the bilateral symmetry of rectangular frame 51 is processed there is the same mounting hole of multirow interval, every high temperature resistant metal blade 52 passes through axle sleeve 53 fixed mounting on a transmission shaft 54, the both ends of every transmission shaft 54 rotate through deep groove ball bearing 56 respectively and install in every row of mounting hole, and stretch out the same end meshing of every transmission shaft 54 outside rectangular frame 51 and install gear 58 to install driving motor 57 at the other end of one of them transmission shaft 54, driving motor 57 chooses for use the motor of suitable power according to the operating environment of in-service can, the louver type dust blocking mechanism 5 is reasonable in structural design, the high-temperature-resistant metal blades 52 can be adjusted, so that the rising speed of steam can be controlled, the residence time of the steam in the dust chamber 9 can be delayed, when the opening and closing size of the high-temperature-resistant metal blades 52 needs to be adjusted, only the driving motor 57 needs to be controlled to work, the driving motor 57 drives the transmission shaft 54 connected with the driving motor 57 to rotate, the high-temperature-resistant metal blades 52 connected with the transmission shaft 54 are further driven to turn over, the turned-over high-temperature-resistant metal blades 52 further drive the gears 58 connected with the turned-over high-temperature-resistant metal blades 52 to rotate, and therefore other gears 58 are driven to rotate to turn over the rest; second shower 6 includes into water branch 17 and installs many communicating pipes 61 in into water branch 17 below, communicating pipe 61 is installed on the inner wall of clean room 9 through spraying support 64, and a horizontal pipe 62 is all installed to every below of communicating pipe 61, a plurality of high pressure nozzle 63 are installed to the bottom of horizontal pipe 62, and high pressure nozzle 63 is located high temperature resistant metal blade 52 directly over, and second shower 6 sprays the area great, can carry out abundant contact with steam, and tripe formula dust blocking mechanism 5 and second shower 6 cooperate the use, can reach better dust removal purifying effect.

The three-stage dust removing section comprises a partition baffle 7 fixedly arranged on the inner wall of the dust removing chamber 9 and a third spray pipe 14 arranged in the partition baffle 7 in a penetrating way, the partition baffle 7 is of a structure with high edge and low middle, an air outlet channel 16 is processed at the center of the partition baffle 7, the edge of the air outlet channel 16 is provided with a nozzle 15, the nozzle 15 is communicated with a third spray pipe 14, the third spray pipe 14 has the same structure as the first spray pipe 18, and the structure used in the existing spray dust removal technology can be adopted, the first spraying pipe 18, the water inlet branch pipe 17 and the third spraying pipe 14 are all communicated with a water inlet main pipe 19, the water inlet main pipe 19 is communicated with a water source, so that in order to avoid waste of water resources, a sedimentation filter tank can be built on one side of the coke quenching chamber 1, and the sprayed wastewater can enter the water inlet main pipe 19 for recycling after being filtered by the sedimentation filter tank.

The top level of clean room 9 is provided with blast pipe 10, install sedimentation pipe 11 on the blast pipe 10, sedimentation pipe 11's bottom is provided with blow off pipe 12, preferably, sedimentation pipe 11's cross sectional shape is V type, W type or semicircle type, install blowoff valve 13 on the blow off pipe 12, blowoff valve 13 can select for use suitable solenoid valve according to the temperature and the pressure of pipe diameter, steam.

Further, in order to further improve the dust removal effect of the primary dust removal section, a foldable metal filter screen 4 is mounted on the filter grid 3 below the first spray pipe 18, and the number of layers of the foldable metal filter screen 4 is 3-5.

Further, filter grid 3 includes outer carriage and equidistant evenly installed the grid stick in outer carriage, outer carriage fixed mounting is on the inner wall of clean room 9, the grid stick is long and thin round bar form, and the interval between two adjacent grid sticks is 1 ~ 2mm, and the grid stick can adopt intensity good, high temperature resistant and anticorrosive material, like stainless steel, pottery etc. during the use, and steam passes through from the gap between the grid stick, changes the steam runner through the grid stick, can make air current distribution more even like this, can further increase the area of contact of shower water and steam, reaches better dust removal effect.

Preferably, the demister 8 is a baffle demister or a wire mesh demister, in actual use, a suitable demister 8 type can be reasonably selected according to use requirements, wherein the commonly used wire mesh demister is composed of a wire mesh and a grid, the wire mesh is formed by overlapping a plurality of layers, each layer of the wire mesh is composed of metal wires, the metal wires are made of 304 and 316L type steel, corrosion can be prevented, and the service life is long.

In order to facilitate the independent control of the use conditions of the first spraying pipe 18, the water inlet branch pipe 17 and the third spraying pipe 14, a water inlet valve and a pressure gauge are respectively arranged on the first spraying pipe 18, the water inlet branch pipe 17 and the third spraying pipe 14.

The utility model discloses a working process is: steam generated in the coke quenching process firstly enters a primary dust removal section, the filter grid 3 and the first spray pipe 18 are matched to block and spray the steam for the first time, the ascending flow direction of the steam is changed, the airflow distribution is more uniform, the contact area of flue gas and spray water is increased, meanwhile, the retention and dust removal time of the steam in the dust removal chamber 9 is increased, and after the blocking and spraying of the primary dust removal section, about 20% of coke powder in the steam can be blocked and sprayed and then settled into the coke quenching chamber 1; the steam after primary dust removal and spraying enters a secondary dust removal section, the louvered dust blocking mechanism 5 and the second spraying pipe 6 are matched to perform secondary blocking and spraying on the rising steam, the direction of steam airflow is further changed, the rising speed of the steam airflow is slowed down, coke powder particles in the steam are separated from the steam after impacting the high-temperature-resistant metal blades 52, the other part of the coke powder particles continuously rise from the high-temperature-resistant metal blades 52, the coke powder particles are settled in the coke quenching chamber 1 due to the increase of self weight under the secondary spraying action of the second spraying pipe 6, meanwhile, the high-temperature-resistant metal blades 52 on the louvered dust blocking mechanism 5 can be automatically opened and closed, in the using process, the opening and closing degree of the high-temperature-resistant metal blades 52 can be reasonably regulated and controlled according to the content of the coke powder in the steam, so as to control the flow speed of the steam, and after blocking and spraying in the secondary dust removal section, about 65% of coke powder in the steam can be blocked and sprayed and then settled into the coke quenching chamber 1; the steam after the secondary dust removal and spraying enters the third-stage dust removal section, the partition baffle 7 and the nozzle 15 can block and spray the steam for the third time, when the rising steam enters the air outlet channel, the nozzle 15 can spray water mist into the air outlet channel, the water mist can quickly adsorb fine dust and harmful impurities still mixed in the steam, thereby ensuring that coke powder in the steam can be comprehensively treated and purified, about 10 percent of the coke powder in the steam can be blocked and sprayed and then settled into the coke quenching chamber 1 after the blocking and spraying of the third-stage dust removal section, meanwhile, the steam after the blocking and spraying of the third-stage dust removal section is filtered again by the demister 8 and then discharged from the exhaust pipe 10, because the settling pipe 11 can change the flow direction of the steam again, the flow speed of the steam can be reduced, and simultaneously coke powder particles possibly mixed in the steam can be settled to the bottom of the settling pipe 11, only the blowdown valve 13 needs to be opened periodically to discharge the dust at the bottom of the settling tube 11.

Claims (6)

1. The utility model provides a high-efficient dust collector of quenching tower which characterized in that: comprises a coke quenching chamber (1) and a dust chamber (9) arranged above the coke quenching chamber (1), wherein a coke quenching car (20) is placed in the coke quenching chamber (1), a coke quenching spray pipe (2) is arranged in the coke quenching chamber (1) above the coke quenching car (20), a primary dust removal section, a secondary dust removal section, a tertiary dust removal section and a demister (8) are sequentially arranged in the dust chamber (9) from bottom to top,

the primary dust removal section comprises two filtering grids (3) which are arranged in a dust removal chamber (9) at intervals up and down, and a first spray pipe (18) is arranged between the two filtering grids (3);

the secondary dedusting section comprises a louver type dust-blocking mechanism (5) symmetrically installed in a dedusting chamber (9) and a second spray pipe (6) correspondingly installed above the louver type dust-blocking mechanism (5), the louver type dust-blocking mechanism (5) comprises a rectangular frame (51) and a plurality of high-temperature-resistant metal blades (52), the rectangular frame (51) is fixedly installed on the inner wall of the dedusting chamber (9) through a supporting frame (55), multiple rows of installing holes with the same space are symmetrically processed on the left side and the right side of the rectangular frame (51), each high-temperature-resistant metal blade (52) is fixedly installed on one transmission shaft (54) through a shaft sleeve (53), the two ends of each transmission shaft (54) are respectively installed in each row of installing holes through a deep groove ball bearing (56) in a rotating mode, and a gear (58) is installed at the same end of each transmission shaft (54) extending out of the rectangular frame (51) in a meshing mode, a driving motor (57) is mounted at the other end of one of the transmission shafts (54), the second spray pipe (6) comprises a water inlet branch pipe (17) and a plurality of communicating pipes (61) mounted below the water inlet branch pipe (17), the communicating pipes (61) are mounted on the inner wall of the dust chamber (9) through spray supports (64), a horizontal pipe (62) is mounted below each communicating pipe (61), a plurality of high-pressure spray heads (63) are mounted at the bottoms of the horizontal pipes (62), and the high-pressure spray heads (63) are located right above the high-temperature resistant metal blades (52);

the three-stage dust removal section comprises a partition baffle (7) fixedly mounted on the inner wall of the dust removal chamber (9) and a third spray pipe (14) penetrating through the partition baffle (7), the partition baffle (7) is of a structure with high edge and low middle, an air outlet channel (16) is processed at the center of the partition baffle (7), a nozzle (15) is mounted at the edge of the air outlet channel (16), and the nozzle (15) is communicated with the third spray pipe (14); the first spray pipe (18), the water inlet branch pipe (17) and the third spray pipe (14) are communicated with a water inlet main pipe (19);

the top level of clean room (9) is provided with blast pipe (10), install sedimentation pipe (11) on blast pipe (10), the bottom of sedimentation pipe (11) is provided with blow off pipe (12), install blowoff valve (13) on blow off pipe (12).

2. The efficient dust removal device for the quenching tower as claimed in claim 1, wherein: a folding metal filter screen (4) is arranged on the filter grid (3) below the first spray pipe (18).

3. The efficient dust removal device for the quenching tower as claimed in claim 1, wherein: filter grid (3) including outer carriage and equidistant evenly install the grid stick in outer carriage, outer carriage fixed mounting is on the inner wall of clean room (9), the grid stick is long and thin circle stick form, and the interval between two adjacent grid sticks is 1 ~ 2 mm.

4. The efficient dust removal device for the quenching tower as claimed in claim 1, wherein: the cross section of the settling pipe (11) is V-shaped, W-shaped or semicircular.

5. The efficient dust removal device for the quenching tower as claimed in claim 1, wherein: the demister (8) is a baffle demister or a wire mesh demister.

6. The efficient dust removal device for the quenching tower as claimed in claim 1, wherein: and a water inlet valve and a pressure gauge are respectively arranged on the first spray pipe (18), the water inlet branch pipe (17) and the third spray pipe (14).

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