CN217725043U

CN217725043U - Equipment for filtering dust in pyromellitic dianhydride tail gas

Info

Publication number: CN217725043U
Application number: CN202221884941.2U
Authority: CN
Inventors: 孙海峰; 刘珂; 杨学城
Original assignee: Boshan Hengtai Chemical Plant
Current assignee: Boshan Hengtai Chemical Plant
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-04
Anticipated expiration: 2032-07-21

Abstract

The utility model relates to the technical field of tail gas dust removal devices, in particular to a device for filtering dust in pyromellitic dianhydride tail gas, which comprises a dust removal box, an air inlet pipe, an air bag, an exhaust pipe a, a box body, a lifting device, a water pipe a, a water tank, an air injection pipe a, a baffle, a water pipe b, a filter plate a and a filter plate b; the dust removing box is provided with an ash bucket which is provided with an ash discharging valve; the baffle is connected with the dust removal box, the gas injection pipe a is connected with the gas bag, and the gas injection pipe b is arranged on the gas injection pipe a; the gas injection pipe b is inserted into the filtering component; the exhaust pipe a is connected with the dust removal box and the box body, the box body is provided with an exhaust pipe b, and the lower end of the box body is provided with a liquid outlet; two ends of the water pipe b are connected with the inner wall of the box body and communicated with the water pipe a, and a spray head is arranged on the water pipe b; the filter plate a is connected with the inner wall of the box body, and the filter plate b is connected with the lifting device. The utility model discloses dust removal case filters the dust in the tail gas, filters the organic matter in the tail gas in the box, finally obtains the tail gas of accomplishing of handling, and the easy cleaning process of large granule impurity that the treatment effect is thorough and cross and filter.

Description

Equipment for filtering dust in pyromellitic dianhydride tail gas

Technical Field

The utility model relates to a tail gas dust collector technical field specifically is and an equipment of dust in filtration pyromellitic dianhydride tail gas.

Background

Pyromellitic dianhydride, abbreviated as pyromellitic anhydride, is a white or yellowish crystal in pure form. The tail gas contains a large amount of dust in the process of processing pyromellitic dianhydride, the main components of organic matters in the tail gas are the partial anhydride and the phthalic anhydride, the tail gas forms massive and flaky large particles after being washed, the tail gas needs to be treated and then discharged, and otherwise, air pollution is caused.

Chinese patent with publication number CN208426819U discloses an equipment of dust in filtration pyromellitic dianhydride tail gas, including the gas receiver, the side of gas receiver is fixed to be inlayed and is had first admission line, the bottom fixedly connected with base of gas receiver, the top fixedly connected with clean room of base, the side fixedly connected with backing plate of gas receiver, the side of backing plate and the side fixed connection of clean room, the top fixedly connected with aspiration pump of backing plate, one side of aspiration pump is fixed to be inlayed and is had first exhaust pipe, and the side fixed connection of the one end of first exhaust pipe and gas receiver. This through setting up clean room, dust pocket and filter plate b, can get rid of some great dusts in the tail gas to discharge the intake chamber with the dust through the pipeline of giving vent to anger inside, deposit, through setting up gas washing chamber, baffling board and gas washing pond, can effectual reinforcing to the processing of dust, make the processing of dust more thorough, avoid the dust to discharge the condition that causes the pollution and take place.

However, the above technical solutions have the following drawbacks:

the dust falls into the aquatic and does not have subsequent processing, and the aquatic not only has the dust, and the organic matter in the tail gas is through rinsing cubic and flaky large granule that forms in addition, and these large granules pile up together and lead to the final treatment effect of tail gas not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a device for filtering dust in pyromellitic dianhydride tail gas.

The technical scheme of the utility model: a device for filtering dust in pyromellitic dianhydride tail gas comprises a dust removal box, an air inlet pipe, a support, an air bag, an exhaust pipe a, a box body, a lifting device, a water pipe a, a water tank, an air injection pipe a, a baffle, a water pipe b, a filter plate a and a filter plate b;

the dust removal box is connected with the bracket, the bottom end of the dust removal box is provided with an ash bucket, and the discharge end of the ash bucket is provided with an ash discharge valve; the baffle is connected with the inner wall of the dust removal box, and a plurality of filtering components are arranged on the lower end face of the baffle;

the gas injection pipe a is provided with an electromagnetic pulse valve, one end of the gas injection pipe a is connected with the gas outlet end of the gas bag, the other end of the gas injection pipe a hermetically extends into the dust removal box, the gas injection pipe a is positioned above the baffle plate, and the gas injection pipe a positioned in the dust removal box is provided with a plurality of gas injection pipes b; the gas injection pipes b correspond to the filtering components one by one, and the gas outlet ends of the gas injection pipes b are inserted into the filtering components;

the box body is communicated with the dust removal box through an exhaust pipe a; an air pump is arranged on the exhaust pipe a; the box body is provided with an exhaust pipe b, the lower end of the box body is provided with a liquid outlet, and the box body is provided with a sealing door; the water pipe b is connected with the inner wall of the box body and communicated with the water tank through the water pipe a, a water pump is arranged on the water pipe a, and a plurality of spray heads are arranged on the water pipe b;

the filter plate a is connected with the inner wall of the box body and is positioned below the water pipe b; the filter plate b is connected with the lifting device, is positioned below the filter plate a and is connected with the inner wall of the box body in a sliding manner.

Preferably, the filter assembly comprises a mounting portion, a filter cartridge and an annular partition plate;

the baffle is provided with a mounting hole, the mounting part is in threaded fit connection with the mounting hole, and the mounting part is connected with the filter cartridge and communicated with the inside of the filter cartridge;

the annular partition plate is arranged in the filter cylinder and is coaxially distributed with the mounting part; the filter cartridge and the annular partition plate are both provided with filter holes.

Preferably, the filter holes on the annular partition plate are smaller than the filter holes on the filter cartridge.

Preferably, the lifting device comprises a rod a, a pawl, a ratchet, a rocker, a rod b, a pulley, a belt and a rod c;

the rod a is connected to the outer wall of the box body, and the pawl is rotatably connected with the rod a;

one end of the rod b is rotatably connected with the inner wall of the box body, the other end of the rod b penetrates through the box body to be connected with the ratchet wheel, the rocker is connected with the ratchet wheel, the rocker and the ratchet wheel are eccentrically arranged, the two belt wheels are connected onto the rod b, the belt wheels, the rod b and the ratchet wheel are coaxially distributed, one end of the belt is connected with the belt wheels, the other end of the belt is connected with the rod c, the belt wheels, the belt and the rod c correspond to one another one by one, and the rod c is connected with the filter plate b.

Preferably, the rod c is U-shaped, and two ends of the U-shaped are connected with the filter plate b.

Preferably, the inner diameter of the ash bucket gradually decreases downwards along the height direction of the dust removal box.

Preferably, the peripheral surface of the filter plate b is provided with a rubber ring; the rubber ring compresses tightly the inner wall of box.

Compared with the prior art, the above technical scheme of the utility model following profitable technological effect has: firstly, pyromellitic dianhydride tail gas enters a dust removal box through an air inlet pipe, the tail gas leaves dust in the tail gas in a dust removal chamber through two layers of filter cylinders with different pore diameters and falls into an ash bucket, a gas in a gas bag is sprayed into the interior of a filter assembly through a gas spraying pipe a and a gas spraying pipe b by an electromagnetic pulse valve, and the dust attached to the filter cylinders is blown down into the ash bucket; tail gas enters the box body through the exhaust pipe a, the spray header sprays water to the interior of the box body, organic matters in the tail gas are washed by water to generate blocky or flaky particles which fall into the water, and the washed gas moves upwards and is exhausted through the exhaust pipe b; the rocker is rotated to drive the belt wheel to rotate, so that the belt is wound on the outer peripheral surface of the belt wheel to lift the filter plates b from the water in the box body, the cooperation of the pawl and the ratchet wheel controls the filter plates b not to fall down, a cleaning opening is conveniently opened for cleaning, and liquid in the box body is discharged from a liquid discharge opening; can filter out the solid dust in the tail gas in the dust removal case, can filter out the organic matter in the tail gas in the box, finally obtain the tail gas of accomplishing of handling, the easy cleaning treatment of large granule impurity that the treatment effect is thorough and filter out.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a schematic structural view of a dust removing box in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the box body in an embodiment of the present invention.

Fig. 4 is a side view of fig. 3.

FIG. 5 is a schematic view of a filter assembly according to an embodiment of the present invention

Reference numerals: 1. a dust removal box; 2. an air inlet pipe; 3. a support; 4. an ash hopper; 5. an ash discharge valve; 6. air bag; 7. an electromagnetic pulse valve; 8. an exhaust pipe a; 9. an air pump; 10. a box body; 11. an exhaust pipe b; 12. a rod a; 13. a pawl; 14. a ratchet wheel; 15. a rocker; 16. a water pipe a; 17. a water pump; 18. a water tank; 19. a gas injection pipe a; 20. a baffle plate; 21. a gas injection pipe b; 22. a filter assembly; 23. a water pipe b; 24. an installation part; 26. an annular partition plate; 27. a filter cartridge; 29. a filter plate a; 30. a shower head; 31. a rod b; 32. a pulley; 33. a belt; 34. a rod c; 35. and (b) a filter plate.

Detailed Description

Example one

As shown in fig. 1-5, the device for filtering dust in pyromellitic dianhydride tail gas provided by the present invention comprises a dust removal box 1, an air inlet pipe 2, a support 3, an air bag 6, an exhaust pipe a8, a box body 10, a lifting device, a water pipe a16, a water tank 18, an air injection pipe a19, a baffle 20, a water pipe b23, a filter plate a29 and a filter plate b35;

the dust removing box 1 is connected with a support 3, an ash hopper 4 is arranged at the bottom end of the dust removing box 1, and an ash discharging valve 5 is arranged at the discharge end of the ash hopper 4; the dump valve 5 is prior art and will not be described in detail; further, the inner diameter of the ash bucket 4 is gradually reduced downwards along the height direction of the dust removing box 1;

the baffle 20 is connected with the inner wall of the dust removing box 1, and a plurality of filtering components 22 are arranged on the lower end surface of the baffle 20;

the electromagnetic pulse valve 7 is arranged on the gas injection pipe a19, one end of the gas injection pipe a19 is connected with the gas outlet end of the gas bag 6, the other end of the gas injection pipe a19 extends into the dust removal box 1 in a sealing mode, the gas injection pipe a19 is located above the baffle plate 20, and the gas injection pipe a19 located in the dust removal box 1 is provided with a plurality of gas injection pipes b21; the gas injection pipes b21 correspond to the filtering components 22 one by one, and the gas outlet ends of the gas injection pipes b21 are inserted into the filtering components 22; the gas bag 6 is used for storing gas, and the electromagnetic pulse valve 7 is in the prior art and is not described in detail; the electromagnetic pulse valve 7 quickly sprays the gas in the gas bag 6 to the inside of the filter assembly 22, and sprays the dust attached to the filter assembly 22 onto the ash bucket 4;

one end of the exhaust pipe a8 is connected with the dust removal box 1, the other end of the exhaust pipe a8 is connected with the box body 10, and the dust removal box 1, the exhaust pipe a8 and the box body 10 are communicated in sequence; an air pump 9 is arranged on the exhaust pipe a8, an exhaust pipe b11 is arranged on the box body 10, and a liquid outlet is formed in the lower end of the box body 10; the box body 10 is provided with a sealing door, so that the filter plates a29 and b35 in the box body 10 can be cleaned conveniently;

two ends of a water pipe b23 are connected with the inner wall of the box body 10, the water pipe b23 is communicated with the water tank 18 through a water pipe a16, a water pump 17 is arranged on the water pipe a16, and a plurality of spray headers 30 are arranged on the water pipe b 23;

the filter plate a29 is connected with the inner wall of the box body 10 and is positioned below the water pipe b 23; the filter plate b35 is connected with the lifting device, the filter plate b35 is positioned at the lower end of the filter plate a29, the filter plate b35 is connected with the inner wall of the box body 10 in a sliding way, the outer peripheral surface of the filter plate b35 is provided with a rubber ring, and the rubber ring presses the inner wall of the box body 10 to prevent particles generated by organic matters from leaking from a gap between the filter plate b35 and the inner wall of the box body 10.

In the utility model, pyromellitic dianhydride tail gas enters the dust removal box 1 through the gas inlet pipe 2, dust in the tail gas is left in the dust removal box 1 and falls into the ash bucket 4 through the filtering component 22, gas in the gas bag 6 is sprayed into the filtering component 22 through the gas spraying pipe a19 and the gas spraying pipe b21 by the electromagnetic pulse valve 7, and the dust attached to the filtering component 22 is blown into the ash bucket 4; tail gas enters the box body 10 through the exhaust pipe a8, the spray header 30 sprays water into the box body 10, organic matters in the tail gas are washed to generate blocky or flaky particles which fall into water, and the washed gas moves upwards and is exhausted through the exhaust pipe b 11; the rocker 15 is rotated to drive the belt wheel 32 to rotate, so that the belt 33 is wound on the outer peripheral surface of the belt wheel 32 to lift the filter plate b35 from the water in the box body 10 and simultaneously bring particles in the water up for cleaning, and the liquid in the box body 10 is discharged from the liquid discharge port; dust removal case 1 can filter out the solid dust in the tail gas, can filter out the organic matter in the tail gas in the box 10, finally obtains the tail gas of accomplishing the processing, and the effect of treatment is thorough and the easy cleaning process of the large granule impurity of crossing.

Example two

As shown in fig. 5, compared with the first embodiment, the filter assembly 22 of the present invention includes an installation portion 24, a filter cartridge 27 and an annular partition plate 26;

the baffle 20 is provided with a mounting hole, the mounting part 24 is in threaded fit connection with the mounting hole, and the mounting part 24 is connected with the filter cartridge 27 and is communicated with the interior of the filter cartridge 27;

an annular partition 26 is mounted in the cartridge 27 and is coaxial with the mounting portion 24; the filter cartridge 27 and the annular partition plate 26 are both provided with filter holes;

further, the bottom of the filter cartridge 27 is provided with an ash discharge port for discharging ash, so as to prevent dust on the annular partition plate 26 from accumulating inside the filter cartridge 27;

further, the filter holes of the annular partition 26 are smaller than those of the filter cartridge 27.

In this embodiment, the exhaust gas passes through the filter cartridges 27 and the annular partition plates 26 with different pore diameters in sequence, and is discharged above the baffle 20 from the mounting portion 24, so that solid dust with different sizes in the exhaust gas can be better filtered more cleanly without residue.

EXAMPLE III

As shown in fig. 3, compared with the first embodiment, the lifting device of the present invention includes a rod a12, a pawl 13, a ratchet 14, a rocker 15, a rod b31, a belt wheel 32, a belt 33, and a rod c34;

the rod a12 is connected to the outer wall of the box body 10, and the pawl 13 is rotationally connected with the rod a 12;

one end of the rod b31 is rotatably connected with the inner wall of the box body 10, the other end of the rod b31 penetrates through the box body 10 to be connected with the ratchet 14, the rocker 15 is connected with the ratchet 14, the rocker 15 and the ratchet 14 are arranged eccentrically, two belt wheels 32 are arranged and are connected with the rod b31, the belt wheels 32, the rod b31 and the ratchet 14 are coaxially distributed, one end of the belt 33 is connected with the belt wheels 32, the other end of the belt 33 is connected with a rod c34, the belt wheels 32, the belt 33 and the rod c34 are in one-to-one correspondence, and the rod c34 is connected with a filter plate b35; further, the rod c34 is U-shaped, and both ends of the U-shape are connected to the filter plates b35.

In this embodiment, the rotating rocker 15 drives the ratchet 14 to rotate, the ratchet 14 drives the rod b31 to rotate, the rod b31 drives the two belt wheels 32 to rotate, the belt 33 is wound on the outer sides of the belt wheels 32, so that the filter plates b35 are lifted up, the pawl 13 and the ratchet 14 cooperate to control the filter plates b35 not to fall down, a cleaning opening is conveniently opened for cleaning, and the lifting pawl 13 can put down the filter plates b35 for the next use.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. The equipment for filtering dust in the pyromellitic dianhydride tail gas is characterized by comprising a dust removal box (1), an air inlet pipe (2), a support (3), an air bag (6), an exhaust pipe a (8), a box body (10), a lifting device, a water pipe a (16), a water tank (18), an air injection pipe a (19), a baffle (20), a water pipe b (23), a filter plate a (29) and a filter plate b (35);

the dust removing box (1) is connected with the support (3), the bottom end of the dust removing box (1) is provided with an ash bucket (4), and the discharge end of the ash bucket (4) is provided with an ash discharging valve (5); the baffle (20) is connected with the inner wall of the dust removal box (1), and a plurality of filtering components (22) are arranged on the lower end face of the baffle (20);

an electromagnetic pulse valve (7) is arranged on the gas injection pipe a (19), one end of the gas injection pipe a (19) is connected with the gas outlet end of the gas bag (6), the other end of the gas injection pipe a (19) hermetically extends into the dust removal box (1), the gas injection pipe a (19) is positioned above the baffle plate (20), and a plurality of gas injection pipes b (21) are arranged on the gas injection pipe a (19) positioned in the dust removal box (1); the air injection pipes b (21) correspond to the filtering components one by one, and the air outlet ends of the air injection pipes b (21) are inserted into the filtering components;

the box body (10) is communicated with the dust removal box (1) through an exhaust pipe a (8); an air pump (9) is arranged on the exhaust pipe a (8); an exhaust pipe b (11) is arranged on the box body (10), a liquid outlet is arranged at the lower end of the box body (10), and a sealing door is arranged on the box body (10); a water pipe b (23) is connected with the inner wall of the box body (10), the water pipe b (23) is communicated with the water tank (18) through a water pipe a (16), a water pump (17) is arranged on the water pipe a (16), and a plurality of spray heads (30) are arranged on the water pipe b (23);

the filter plate a (29) is connected with the inner wall of the box body (10) and is positioned below the water pipe b (23); the filter plate b (35) is connected with the lifting device, the filter plate b (35) is positioned below the filter plate a (29), and the filter plate b (35) is connected with the inner wall of the box body (10) in a sliding mode.

2. The apparatus for filtering dust in pyromellitic dianhydride off-gas according to claim 1, wherein the filter assembly (22) comprises a mounting part (24), a filter cartridge (27) and an annular partition plate (26);

the baffle (20) is provided with a mounting hole, the mounting part (24) is in threaded fit connection with the mounting hole, and the mounting part (24) is connected with the filter cartridge (27) and is communicated with the interior of the filter cartridge (27);

the annular partition plate (26) is arranged in the filter cylinder (27) and is coaxially distributed with the mounting part (24); the filter cylinder (27) and the annular partition plate (26) are both provided with filter holes.

3. The apparatus for filtering dust in pyromellitic dianhydride off-gas according to claim 2, wherein the filter holes of the annular partition plate (26) are smaller than the filter holes of the filter cartridge (27).

4. The equipment for filtering dust in pyromellitic dianhydride tail gas according to claim 1, wherein the lifting device comprises a rod a (12), a pawl (13), a ratchet wheel (14), a rocker (15), a rod b (31), a belt wheel (32), a belt (33) and a rod c (34);

the rod a (12) is connected to the outer wall of the box body (10), and the pawl (13) is rotationally connected with the rod a (12);

the inner wall of connecting box (10) is rotated to the one end of pole b (31), the other end passes box (10) and connects ratchet (14), on ratchet (14) is connected in rocker (15), rocker (15) and ratchet (14) eccentric settings, band pulley (32) are equipped with two, two are all connected on pole b (31), band pulley (32), pole b (31) and ratchet (14) coaxial distribution, band pulley (32) is connected to the one end of area (33), other end connecting rod c (34), band pulley (32), area (33) and pole c (34) one-to-one, filter plate b (35) is connected in pole c (34).

5. The apparatus for filtering dust from pyromellitic dianhydride off-gas according to claim 4, wherein the rod c (34) is "U" shaped, and both ends of the "U" shape are connected to the filter plates b (35).

6. The apparatus for filtering dust from pyromellitic dianhydride off-gas according to claim 1, wherein the inner diameter of the ash hopper (4) is gradually decreased downward along the height direction of the dust removal box (1).

7. The apparatus for filtering dust from pyromellitic dianhydride tail gas according to claim 1, wherein the outer peripheral surface of the filter plate b (35) is provided with a rubber ring; the rubber ring compresses the inner wall of the box body (10).