CN221944951U - A tail gas waste heat recovery device for a chemical plant - Google Patents

Abstract

The utility model discloses a tail gas waste heat recovery device of a chemical device, which relates to the technical field of chemical devices and comprises a tank body, wherein a heat preservation shell is arranged outside the tank body, a first bearing plate is connected to the top of one side of the heat preservation shell, a dust removal component is arranged at the top end of the first bearing plate, a fan is arranged at one side of the top end of the first bearing plate, a second bearing plate is connected to the bottom of the other side of the heat preservation shell, and a purification component is arranged at the top end of the second bearing plate; the beneficial effects of the utility model are as follows: through the dust removing assembly, the motor is started, so that the cleaning screw rod drives the movable seat and the cleaning brush to move, dust on the filter plate is swept down and falls into the dust collecting box, the bolts are unscrewed, the dust collecting box is pulled out, and the dust is conveniently cleaned by workers; through the purification assembly who sets up, pull open closing plate and filtration frame, put into the filtration frame with purifying agent, tail gas gets into the purifying box, after purifying agent reaction, clear away harmful substance in the tail gas, avoid tail gas exhaust polluted air.

Description

A tail gas waste heat recovery device for a chemical plant

Technical Field

The utility model relates to a tail gas waste heat recovery device, in particular to a tail gas waste heat recovery device for a chemical plant, belonging to the technical field of chemical plants.

Background Art

Chemical plants are composed of static equipment and transmission devices. The static equipment includes towers, kettles, tanks, pressure pipes, pressure-bearing parts, and valves. The transmission equipment includes pumps, screws, compressors, etc. During the production process of chemical plants, high-calorie exhaust gas is generated. The exhaust gas is mixed with dust and reactants in the chemical plant. It is necessary to use an exhaust gas waste heat recovery device to recycle the heat in the exhaust gas.

Among them, the "a tail gas waste heat recovery device for a chemical plant" disclosed in the application number "CN201711364343.6" is also an increasingly mature technology, including a base plate and a chemical plant body, a water tank and a filter box installed on the base plate, the bottom ends of the water tank and the filter box are provided with evenly distributed support rods, the bottom ends of the support rods are fixed to the base plate, a shell is provided on the side wall of the chemical plant body, a heating chamber is formed between the shell and the outer wall of the chemical plant body, an exhaust fan is provided on one side of the top of the chemical plant body, the exhaust port of the exhaust fan extends to the interior of the chemical plant body, the air outlet of the exhaust fan is connected to the first air duct, the other end of the first air duct is connected to the filter box, an installation groove is provided in the filter box, a mounting plate is clamped in the mounting groove, and a filter screen is installed on one side wall of the mounting plate. The device has a simple structure and a novel design, and can fully reuse the waste heat of exhaust gas, saving energy and reducing processing costs. It has a strong inventiveness. After further searching, the "A waste heat recovery device for tail gas of a chemical plant" disclosed in the application number "CN202110455338.6" includes a waste heat absorption device and a dust removal device. The slow flow box is arranged on the side wall of the outer cylinder through a support frame, and an S-shaped guide plate is used inside the slow flow box to form a curved air duct between the partition and the inner wall of the slow flow box. A strip hole is opened on the partition to connect to the diverter pipe on the top of the slow flow box, and the diverter pipe passes through a U The U-shaped pipe and the connecting pipe are connected to the top cover of the outer cylinder, an ash receiving tank is vertically arranged on the side wall at the top port of the diverter pipe by using the ash discharge pipe, the diverter pipe and the ash discharge pipe are arranged in a herringbone shape, a filter is arranged at the connecting port of the diverter pipe and the U-shaped pipe, and a baffle is arranged on the inner wall of the diverter pipe away from the U-shaped pipe at the ash discharge pipe port. The hot exhaust gas mixed with dust enters the slow flow box from the air inlet pipe, slows down through the curved air duct, and then enters the diverter pipe for diversion and deceleration again. After being filtered by the filter at the diverter pipe port, the dust falls into the ash receiving tank under the cooperation of gravity and the baffle, thereby realizing the automatic separation and discharge of exhaust gas and dust.

The exhaust gas waste heat recovery devices of the chemical plant in the above two public technologies also have the following defects: after filtering the dust in the exhaust gas, the filter plate needs to be taken out and cleaned, which is time-consuming and laborious, and the exhaust gas contains chemical substances that are directly discharged to cause pollution. Therefore, the utility model provides an exhaust gas waste heat recovery device for a chemical plant.

Utility Model Content

The utility model aims to provide a waste heat recovery device for tail gas of a chemical plant, so as to solve the problem that the filter plate proposed in the above background technology is inconvenient to clean and the chemical substances in the tail gas are directly discharged to pollute the air.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tail gas waste heat recovery device of a chemical plant, comprising a tank body, the bottom end of the tank body is connected to a supporting leg, the outside of the tank body is provided with an insulation shell, the top of one side of the insulation shell is connected to a first supporting plate, the top of the first supporting plate is provided with a dust removal assembly, one side of the top of the first supporting plate is provided with a fan, the bottom of the other side of the insulation shell is connected to a second supporting plate, and the top of the second supporting plate is provided with a purification assembly.

As a preferred technical solution of the utility model, the dust removal assembly includes a dust removal box, a filter plate, an air inlet pipe, a first connecting pipe, a second connecting pipe and a support frame, the support frame is connected to the top of the first bearing plate, the middle of the support frame is provided with a dust removal box, the middle of one side of the dust removal box is provided with an air inlet pipe, the middle of the dust removal box is provided with a filter plate, the other side of the dust removal box is provided with a first connecting pipe, one end of the first connecting pipe is connected to the air inlet of the fan, the air outlet of the fan is connected to the second connecting pipe, and one end of the second connecting pipe is connected to the top of one side of the insulation shell.

As a preferred technical solution of the utility model, a first slide groove is opened on the inner wall of the top of the dust removal box, and a cleaning screw is rotatably connected to the interior of the first slide groove through a bearing, and a movable seat is slidably connected to the interior of the first slide groove, and the interior of the movable seat is threadedly connected to the outer wall of the cleaning screw, and a cleaning brush is provided at the bottom end of the movable seat, and an installation box is provided on the top of the front of the dust removal box, and a motor is provided inside the installation box, and a drive shaft of the motor is connected to one end of the cleaning screw.

As a preferred technical solution of the utility model, a dust removal port is opened on one side of the bottom end of the dust removal box, and two sliding rails are provided at the bottom end of the dust removal box. Extension plates are slidably connected to the inside of the two sliding rails, and a dust collection box is connected between the two extension plates. The two extension plates are respectively connected to the corresponding sliding rails by bolts.

As a preferred technical solution of the utility model, the purification component includes a purification box, an air outlet pipe, a ventilation pipe, a filter frame, two second slide grooves and two slide plates. The purification box is connected to the top of the second supporting plate, a ventilation pipe is provided at the top of one side of the purification box, the ventilation pipe is connected to the bottom of the other side of the insulation shell, an air outlet pipe is provided at the bottom of the other side of the purification box, second slide grooves are opened in the middle of the inner walls on both sides of the purification box, slide plates are slidably connected to the insides of the two second slide grooves, and a filter frame is connected between the two slide plates.

As a preferred technical solution of the utility model, the front side of the filter frame is connected to a sealing plate, and the back side of the sealing plate is connected to a sealing ring.

As a preferred technical solution of the utility model, the top end of the tank body is connected to a liquid inlet pipe, the bottom end of the tank body is connected to a liquid outlet pipe, and the bottom end of the liquid outlet pipe is connected to a switch valve.

Compared with the related art, the tail gas waste heat recovery device of a chemical plant provided by the utility model has the following beneficial effects:

1. Start the motor through the dust removal component to rotate the cleaning screw, which is threadedly connected to the moving seat to drive the moving seat to move, and then move the cleaning brush to sweep the dust on the filter plate and drop it into the dust box. Unscrew the bolts and pull out the dust box to facilitate the staff to clean the dust;

2. Through the purification components, open the sealing plate and the filter frame, put the purification agent into the filter frame, and the exhaust gas with heat recovery enters the purification box from the ventilation pipe. After the purification agent reacts, the harmful substances in the exhaust gas are removed to prevent the exhaust gas from polluting the air.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Fig. 2 is a schematic diagram of the cross-sectional structure of the utility model;

FIG3 is an enlarged structural schematic diagram of point A in FIG2 of the present utility model;

FIG4 is a schematic diagram of the cross-sectional structure of the dust removal box of the present invention.

In the figure: 1. tank body; 2. supporting legs; 3. first bearing plate; 4. second bearing plate; 5. dust removal assembly; 6. purification assembly; 7. fan; 8. insulation shell; 9. first slide groove; 10. cleaning screw rod; 11. moving seat; 12. cleaning brush; 13. installation box; 14. motor; 15. dust removal port; 16. slide rail; 17. extension plate; 18. liquid inlet pipe; 19. liquid outlet pipe; 20. switch valve; 21. dust collecting box; 22. sealing plate; 501. dust removal box; 502. filter plate; 503. air inlet pipe; 504. first connecting pipe; 505. second connecting pipe; 506. supporting frame; 601. purification box; 602. air outlet pipe; 603. ventilation pipe; 604. filter frame; 605. second slide groove; 606. slide plate.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Embodiment 1:

Please refer to Figures 1-4. The utility model provides a tail gas waste heat recovery device for a chemical device, including a tank body 1, a supporting leg 2 is connected to the bottom end of the tank body 1, an insulation shell 8 is arranged outside the tank body 1, a first bearing plate 3 is connected to the top of one side of the insulation shell 8, a dust removal component 5 is arranged on the top of the first bearing plate 3, a fan 7 is arranged on one side of the top of the first bearing plate 3, a second bearing plate 4 is connected to the bottom of the other side of the insulation shell 8, and a purification component 6 is arranged on the top of the second bearing plate 4;

The top of the tank body 1 is connected to a liquid inlet pipe 18, the bottom of the tank body 1 is connected to a liquid outlet pipe 19, the bottom of the liquid outlet pipe 19 is connected to a switch valve 20, the reaction solution is added from the liquid inlet pipe 18, the reaction solution is preheated by the heat of the tail gas, the switch valve 20 is opened, and the liquid is discharged from the liquid outlet pipe 19;

The dust removal assembly 5 includes a dust removal box 501, a filter plate 502, an air intake pipe 503, a first connecting pipe 504, a second connecting pipe 505 and a support frame 506. The support frame 506 is connected to the top of the first bearing plate 3. The dust removal box 501 is provided in the middle of the support frame 506. The air intake pipe 503 is provided in the middle of one side of the dust removal box 501. The filter plate 502 is provided in the middle of the dust removal box 501. The first connecting pipe 504 is provided on the other side of the dust removal box 501. One end of the first connecting pipe 504 is connected to the air inlet of the fan 7. The air outlet of the fan 7 is connected to the second connecting pipe 505. One end of the second connecting pipe 505 is connected to the top of one side of the insulation shell 8. The fan 7 is started to draw the exhaust gas from the air intake pipe 503 into the dust removal box 501. After being filtered by the filter plate 502, the exhaust gas enters the second connecting pipe 505 from the first connecting pipe 504 and then enters the insulation shell 8 to heat the tank body 1.

A first slide groove 9 is provided on the inner wall at the top of the dust removal box 501, and a cleaning screw 10 is rotatably connected to the inside of the first slide groove 9 through a bearing, and a moving seat 11 is slidably connected to the inside of the first slide groove 9, and the inside of the moving seat 11 is threadedly connected to the outer wall of the cleaning screw 10, and a cleaning brush 12 is provided at the bottom end of the moving seat 11, and a mounting box 13 is provided on the top of the front of the dust removal box 501, and a motor 14 is provided inside the mounting box 13, and a transmission shaft of the motor 14 is connected to one end of the cleaning screw 10, and the motor 14 is started to make the cleaning screw 10 drive the moving seat 11 and the cleaning brush 12 to move, so that the staff can clean the filter plate 502 conveniently;

A dust removal port 15 is provided at one side of the bottom end of the dust removal box 501. Two slide rails 16 are provided at the bottom end of the dust removal box 501. Extension plates 17 are slidably connected to the inside of the two slide rails 16. A dust collection box 21 is connected between the two extension plates 17. The two extension plates 17 are respectively connected to the corresponding slide rails 16 by bolts. The dust is swept into the dust collection box 21. The bolts are unscrewed and the dust collection box 21 is pulled out, which is convenient for the staff to clean the dust.

Specifically, as shown in Figures 1, 2, 3 and 4, first start the fan 7 to draw the exhaust gas from the intake pipe 503 into the dust removal box 501. After being filtered by the filter plate 502, the exhaust gas enters the second connecting pipe 505 from the first connecting pipe 504, and then enters the insulation shell 8 to heat the tank body 1. Then start the motor 14 to rotate the cleaning screw 10. The cleaning screw 10 is threadedly connected to the movable seat 11, driving the movable seat 11 and the cleaning brush 12 to move, sweeping the dust on the filter plate 502 down and dropping it into the dust box 21. Unscrew the bolts and pull out the dust box 21 to facilitate the staff to clean the dust.

Embodiment 2:

The purification assembly 6 includes a purification box 601, an air outlet pipe 602, a ventilation pipe 603, a filter frame 604, two second slides 605 and two slides 606. The purification box 601 is connected to the top of the second bearing plate 4. A ventilation pipe 603 is provided on the top of one side of the purification box 601. The ventilation pipe 603 is connected to the bottom of the other side of the insulation shell 8. An air outlet pipe 602 is provided on the bottom of the other side of the purification box 601. Second slides 605 are provided in the middle of the inner walls on both sides of the purification box 601. Slides 606 are slidably connected inside the two second slides 605. A filter frame 604 is connected between the two slides 606. The sealing plate 22 and the filter frame 604 are pulled open, and the purification agent is placed in the filter frame 604. The exhaust gas after heat recovery enters the purification box 601 from the ventilation pipe 603. After the reaction of the purification agent, harmful substances in the exhaust gas are removed.

The front of the filter frame 604 is connected to a sealing plate 22, and the back of the sealing plate 22 is connected to a sealing ring to increase the air tightness of the purification box 601;

Specifically, as shown in Figures 1 and 2, first open the sealing plate 22 and the filter frame 604, put the purification agent into the filter frame 604, and the exhaust gas after heat recovery enters the purification box 601 from the ventilation pipe 603. After the purification agent reacts, harmful substances in the exhaust gas are removed to prevent the exhaust gas from polluting the air.

When in use, first, add the reaction solution from the liquid inlet pipe 18, then start the fan 7, draw the exhaust gas from the air inlet pipe 503 into the dust removal box 501, filter it through the filter plate 502, enter the second connecting pipe 505 from the first connecting pipe 504, and then enter the insulation shell 8, preheat the reaction solution in the tank body 1, and recover the waste heat of the exhaust gas, then start the motor 14 to rotate the cleaning screw 10, the cleaning screw 10 is threadedly connected to the moving seat 11, drive the moving seat 11 and the cleaning brush 12 to move, sweep the dust on the filter plate 502 and drop it into the dust box 21, unscrew the bolts, pull out the dust box 21, and it is convenient for the staff to clean the dust;

Next, the sealing plate 22 and the filter frame 604 are opened, and the purification agent is placed in the filter frame 604. The exhaust gas after heat recovery enters the purification box 601 from the ventilation pipe 603. After the purification agent reacts, the harmful substances in the exhaust gas are removed and discharged from the exhaust pipe 602 to avoid the exhaust gas being directly discharged to pollute the air. The sealing plate 22 increases the air tightness of the purification box 601.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a tail gas waste heat recovery device of chemical plant device, includes a jar body (1), its characterized in that, the bottom of jar body (1) is connected with supporting leg (2), the outside of jar body (1) is equipped with heat preservation shell (8), the top of heat preservation shell (8) one side is connected with first loading board (3), the top of first loading board (3) is equipped with dust removal subassembly (5), one side on the top of first loading board (3) is equipped with fan (7), the bottom of heat preservation shell (8) opposite side is connected with second loading board (4), the top of second loading board (4) is equipped with purification subassembly (6).

2. The tail gas waste heat recovery device of a chemical device according to claim 1, wherein: the utility model provides a dust removal subassembly (5) is including dust removal case (501), filter (502), intake pipe (503), first connecting pipe (504), second connecting pipe (505) and support frame (506), support frame (506) are connected the top of first loading board (3), the middle part of support frame (506) is equipped with dust removal case (501), the middle part of dust removal case (501) one side is equipped with intake pipe (503), the middle part of dust removal case (501) is equipped with filter (502), the opposite side of dust removal case (501) is equipped with first connecting pipe (504), the one end of first connecting pipe (504) with the air intake connection of fan (7), the air outlet of fan (7) is connected with second connecting pipe (505), the one end of second connecting pipe (505) with the top of heat preservation shell (8) one side is connected.

3. The tail gas waste heat recovery device of a chemical device according to claim 2, wherein: the dust removal box is characterized in that a first chute (9) is formed in the inner wall of the top end of the dust removal box (501), a cleaning screw rod (10) is connected to the inside of the first chute (9) through bearing rotation, a moving seat (11) is connected to the inside of the first chute (9) in a sliding mode, the inside of the moving seat (11) is in threaded connection with the outer wall of the cleaning screw rod (10), a cleaning brush (12) is arranged at the bottom end of the moving seat (11), a mounting box (13) is arranged at the top of the dust removal box (501), a motor (14) is arranged in the mounting box (13), and a transmission shaft of the motor (14) is connected with one end of the cleaning screw rod (10).

4. The tail gas waste heat recovery device of a chemical device according to claim 2, wherein: the dust removal box is characterized in that a dust removal opening (15) is formed in one side of the bottom end of the dust removal box (501), two sliding rails (16) are arranged at the bottom end of the dust removal box (501), extension plates (17) are slidably connected in the sliding rails (16), dust collection boxes (21) are connected between the extension plates (17), and the extension plates (17) are connected with the corresponding sliding rails (16) through bolts.

5. The tail gas waste heat recovery device of a chemical device according to claim 1, wherein: the purifying component (6) comprises a purifying box (601), an air outlet pipe (602), a ventilating pipe (603), a filtering frame (604), two second sliding grooves (605) and two sliding plates (606), wherein the purifying box (601) is connected to the top end of the second bearing plate (4), the ventilating pipe (603) is arranged at the top of one side of the purifying box (601), the ventilating pipe (603) is connected with the bottom of the other side of the insulating shell (8), the air outlet pipe (602) is arranged at the bottom of the other side of the purifying box (601), the second sliding grooves (605) are formed in the middle of the inner walls of the two sides of the purifying box (601), the sliding plates (606) are connected in a sliding mode, and the filtering frame (604) is connected between the two sliding plates (606).

6. The device for recovering waste heat from tail gas of a chemical plant according to claim 5, wherein: the front of filter frame (604) is connected with closing plate (22), the back of closing plate (22) is connected with the sealing washer.

7. The tail gas waste heat recovery device of a chemical device according to claim 1, wherein: the top of the tank body (1) is connected with a liquid inlet pipe (18), the bottom of the tank body (1) is connected with a liquid outlet pipe (19), and the bottom of the liquid outlet pipe (19) is connected with a switch valve (20).