CN218249415U

CN218249415U - Asphalt flue gas treatment device

Info

Publication number: CN218249415U
Application number: CN202222121068.8U
Authority: CN
Inventors: 吴卓君; 吴宇; 吴志锐
Original assignee: Henan Charui Special Equipment Co ltd
Current assignee: Henan Charui Special Equipment Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-01-10
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses an asphalt flue gas treatment device, which comprises a cooling device and a spraying device, wherein the asphalt flue gas enters the cooling device, and the cooled air flow enters the spraying device; the spraying device comprises a spraying tank, a spraying cover, a first spraying assembly and a second spraying assembly; the first spraying assembly is a spraying disc; the second spraying component is a spiral pipe arranged around the spraying cover; the lower surfaces of the spray disc and the spiral pipe are provided with spray heads; a space is arranged between the bottom and the top of the spray cover and the inner wall of the spray tank; one end of the spiral pipe is closed, and the other end of the spiral pipe is communicated with a second liquid inlet pipe; the spray disc is communicated with a first liquid inlet pipe; liquid for spraying the flue gas enters the spraying device from the first liquid inlet pipe and the second liquid inlet pipe respectively; the end part of the flue gas outlet pipeline positioned in the spray tank extends to the upper part of the spray cover; the bottom of the spraying tank is provided with a liquid discharge pipe, the top of the spraying tank is provided with an exhaust pipe, and the exhaust pipe is communicated with an air inlet end of the draught fan.

Description

Asphalt flue gas treatment device

Technical Field

The utility model belongs to the technical field of the auxiliary assembly in the pitch processing production, a pitch flue gas processing apparatus of specific design.

Background

The in-process of pitch processing production need heat pitch, can produce a large amount of pitch flue gases when heating the pitch, mainly contains suspended solid, sulphide, CO, NO, vapor etc. in the pitch flue gas, in order to prevent to cause the pollution to the atmospheric environment, need handle the pitch flue gas and just can discharge into the atmosphere. The processing apparatus commonly used at present mainly is flue gas cooling equipment and spraying equipment, and flue gas cooling equipment is mainly through cooling medium to the flue gas cooling for light component volatile substance and water condensation in it collect for liquid, and spraying equipment is then directly with the flue gas and water or absorbent contact, detach suspended particles etc..

Current spraying equipment has following problem, the flue gas enters into the spray column from the lower part, then contact against the current with spray medium, handle the flue gas, so set up, though simple, this kind of mode flue gas and medium contact time are too short, and spray contact time for the extension and set up globular packing layer in the spray column, with this reduction flue gas velocity of flow, thereby extension contact time, but tar or other suspended solids in this kind of mode can make the flue gas attach to on filling, long-term use makes remaining more impurity on filling, make the permeability greatly reduced that packs and harden, the post processing is maintained also comparatively difficultly.

In addition, the existing cooling equipment has the following problems that if a common tube type heat exchanger is adopted for cooling flue gas, although cooled liquid drops easily flow out of a cooling tube or a shell, the heat exchange stroke of the flue gas and a coolant is too short, the cooling effect is poor, and some cooling equipment adopts a serpentine coil pipe mode for prolonging the heat exchange stroke, but the liquid is easily accumulated in a pipeline by the arrangement, and the smooth passing of air flow is finally influenced.

Therefore, it is highly desirable to design an asphalt fume treatment device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an asphalt flue gas treatment device comprises a cooling device and a spraying device, wherein asphalt flue gas enters the cooling device through a flue gas inlet pipeline, and cooled air flow enters the spraying device through a flue gas outlet pipeline; the spraying device comprises a spraying tank, a spraying cover which is fixed in the spraying tank through a plurality of support columns and has a downward opening, a first spraying component arranged in the spraying cover and a second spraying component arranged outside the spraying cover; the first spraying assembly is a spraying disc fixed at the top of the spraying cover; the second spraying assembly is a spiral pipe arranged around the spraying cover, and the spiral pipe is fixed on the outer wall of the spraying cover or the inner wall of the spraying tank; the lower surfaces of the spray disc and the spiral pipe are provided with a plurality of downward spray heads; spaces are arranged between the bottom and the top of the spray cover and the inner wall of the spray tank; one end of the spiral pipe is closed, and the other end of the spiral pipe is communicated with a second liquid inlet pipe; the spray tray is communicated with a first liquid inlet pipe; the first liquid inlet pipe and the second liquid inlet pipe both extend out of the spraying tank; liquid for spraying the flue gas enters the spraying device from the first liquid inlet pipe and the second liquid inlet pipe respectively; the end part of the flue gas outlet pipeline positioned in the spray tank extends to the upper part of the spray cover; the bottom of spraying the jar is provided with the fluid-discharge tube, and its top is provided with the blast pipe, the blast pipe communicates with the air inlet end of draught fan.

Furthermore, a plurality of layers of baffle plate assemblies are arranged on the part, positioned above the first spraying assembly and the spraying cover, in the spraying tank; each gear baffle assembly comprises a plurality of baffles which are arranged at intervals; each baffle consists of a left baffle and a right baffle which are fixed on the inner wall of the spraying tank and have opposite inclination directions, the upper ends of the left baffle and the right baffle are connected together, and the left baffle and the right baffle form a structure shaped like a Chinese character 'ren'.

Furthermore, a space is arranged between the baffle plate assemblies of the two adjacent layers, and the baffle plates in the baffle plate assemblies of the two layers are arranged in a staggered mode in the vertical direction.

Further, the cooling device is a vertically arranged tube type heat exchanger; a cooling liquid inlet and a cooling liquid outlet are respectively arranged on the shell pass of the tube type heat exchanger; the flue gas inlet pipeline and the flue gas outlet pipeline are arranged at the end socket of the tube type heat exchanger; and a condensation discharge pipe is arranged at the lower end socket of the tube type heat exchanger.

Furthermore, a separation baffle is arranged in an upper end socket of the tube type heat exchanger, the flue gas inlet pipeline and the flue gas outlet pipeline are communicated with the upper end socket of the tube type heat exchanger and are respectively positioned on two sides of the separation baffle, so that the flue gas forms a U-shaped heat exchange stroke in the tube type heat exchanger.

Furthermore, an emergency pressure relief pipe is arranged at an upper end socket of the tube type heat exchanger, and the emergency pressure relief pipe and the flue gas inlet pipeline are located on the same side of the partition plate.

Further, a liquid collecting pool is arranged below the spraying device, and the liquid discharge pipe extends into the liquid collecting pool; the upper part of the liquid collecting pool is provided with a filter screen, and the end part of the liquid discharge pipe is positioned above the filter screen.

Further, the air outlet end of the draught fan is communicated with the drying tank and the activated carbon tank in sequence.

Further, the spiral tubes are arranged in an Archimedes spiral form.

Furthermore, the top of the spraying cover is provided with a conical mounting cover, and the vertex of the mounting cover is arranged upwards.

The utility model discloses beneficial effect: 1. the utility model discloses a spray tower is separated into two parts by the spray hood that is located in the middle, and the air current enters into the spray hood at first, after carrying out the primary spray in the spray dish in the spray hood, the air current spills over from the below of spray hood outside, is carried out the secondary spray treatment by the liquid of the spiral pipe blowout in the spray tank in the process of from down up rising, consequently the utility model discloses the contact time of interior flue gas and spray medium is longer for the spray mode among the prior art, therefore spray efficiency is higher; 2. the utility model provides a spray tank deck portion and be provided with baffle subassembly, smuggle part liquid drop secretly in being sprayed the back air current and rise when the air current, when it touches baffle subassembly, liquid stops on the baffle, and the air current continues to rise to final discharge spray set in the blast pipe, when liquid accumulation is more, because the dead weight is drippage downwards, finally drops to spraying the tank bottoms portion, this kind of mode that sets up, the liquid drop volume that smugglies secretly in the air current flows spraying tank period greatly reduced. 3. The utility model discloses a be provided with in shell and tube heat exchanger and separate the baffle, be the U-shaped owing to separate the heat transfer stroke of its air current of existence of baffle when the air current enters into shell and tube heat exchanger, and in the direct whereabouts of the liquid drop of condensing in it to the lower part head, when storing up more, make it discharge from the fluid-discharge tube can.

Drawings

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

fig. 2 is a schematic structural view of a second spraying assembly of the present invention;

reference numerals: 1. a shell and tube heat exchanger; 2. a spray tank; 3. a baffle plate; 4. the flue gas enters a pipeline; 5. a flue gas outlet duct; 6. a drainage pipe; 7. a left baffle; 8. a right baffle; 9. an exhaust pipe; 10. a first liquid inlet pipe; 11. a spiral tube; 12. a second liquid inlet tube; 13. spraying a disc; 14. a spray cover; 15. a support pillar; 16. installing a cover; 17. an induced draft fan; 18. a drying tank; 19. a liquid collecting tank; 20. a filter screen; 21. a liquid discharge pipe; 22. and (5) an activated carbon canister.

Detailed Description

The technical solutions of the present invention will be further described below with reference to the drawings and examples, so that those skilled in the art can more clearly understand the contents of the technical solutions.

Example 1:

as shown in the attached figures 1-2, the asphalt flue gas treatment device comprises a cooling device and a spraying device, asphalt flue gas enters the cooling device through a flue gas inlet pipeline 4, and cooled air flow enters the spraying device through a flue gas outlet pipeline 5. The cooling device in this embodiment can adopt the cooling device commonly used among the prior art, can adopt snakelike coil form also can adopt shell and tube heat exchanger form, mainly plays the purpose of cooling the flue gas for light component and vapor in the flue gas are condensed and get off.

The spraying device comprises a spraying tank 2, a spraying cover 14 with a downward opening, a first spraying component and a second spraying component, wherein the spraying cover 14 is fixed in the spraying tank 2 through a plurality of support columns 15, and the first spraying component and the second spraying component are arranged in the spraying cover 14 and outside the spraying cover 14; the bottom of spraying tank 2 is provided with fluid-discharge tube 21, and its top is provided with blast pipe 9, blast pipe 9 communicates with the air inlet end of draught fan 17. The end of the flue gas outlet pipe 5 located in the spray tank 2 extends to the upper part of the spray hood 14.

The first spraying assembly is a spraying disc 13 fixed on the top of the spraying cover 14; the second spraying assembly is a spiral pipe 11 arranged around a spraying cover 14, and the spiral pipe 11 is fixed on the outer wall of the spraying cover 14 or the inner wall of the spraying tank 2; the lower surfaces of the spray disc 13 and the spiral pipe 11 are provided with a plurality of downward spray heads; spaces are arranged between the bottom and the top of the spray cover 14 and the inner wall of the spray tank 2; when the liquid level meter is used for detecting the liquid level of accumulated liquid at the bottom of the spraying tank, the liquid level meter is arranged at the bottom of the spraying tank.

The spiral tubes 11 are arranged in an archimedes spiral form. One end of the spiral pipe 11 is closed, and the other end of the spiral pipe is communicated with a second liquid inlet pipe 12; in particular implementations, gaps should be provided between each layer of the spiral duct to facilitate airflow therethrough into the top exhaust duct.

The spray disc 13 is communicated with a first liquid inlet pipe 10; the first liquid inlet pipe 10 and the second liquid inlet pipe 12 both extend out of the spray tank 2; liquid for spraying flue gas enters the spraying device from the first liquid inlet pipe 10 and the second liquid inlet pipe 12 respectively; in specific operation, a liquid feeding pump can be adopted to pump out the spraying medium and the spraying medium enters the spraying disc and the spiral pipe through the first liquid inlet pipe 10 and the second liquid inlet pipe 12, so that the spraying operation is carried out on the flue gas.

A liquid collecting pool 19 is arranged below the spraying device, and the liquid discharge pipe 21 extends into the liquid collecting pool 19; a filter screen 20 is arranged at the upper part of the liquid collecting pool 19, and the end part of the liquid discharge pipe 21 is positioned above the filter screen 20. The liquid collecting tank is arranged in the embodiment, the liquid collecting tank can be manufactured by digging pits on the ground, when more liquid is accumulated at the bottom, the liquid can be discharged into the liquid collecting tank from the liquid discharge pipe, the filter screen is arranged in the liquid collecting tank, solid sundries entrained in the liquid at the bottom can be intercepted on the filter screen, and when more sundries are accumulated on the filter screen, manual cleaning can be carried out. In addition, when the temperature of the liquid in the liquid collecting tank is reduced after the liquid is placed, the liquid can be pumped out by the liquid pump for recycling, a branch can be additionally arranged on the first liquid inlet pipe 10 and the second liquid inlet pipe 12 during use, and an outlet pipe of the liquid pump is communicated with the branch, so that the liquid in the liquid collecting tank can be recycled.

The pipes involved in this embodiment are provided with valves, which are conventional in operation and the type and location of the valves are not described in detail herein.

Example 2:

the present example differs from example 1 in that: in this embodiment, a plurality of layers of baffle plate assemblies are arranged on the parts of the spray tank 2 above the first spray assembly and the spray cover 14; each gear baffle assembly comprises a plurality of baffles which are arranged at intervals; each baffle consists of a left baffle 7 and a right baffle 8 which are fixed on the inner wall of the spraying tank 2 and have opposite inclination directions, the upper ends of the left baffle 7 and the right baffle 8 are connected together, and the left baffle 7 and the right baffle 8 form a herringbone structure. The baffle plate assembly is arranged in the embodiment, when the air flow rises to the exhaust pipe, the air flow can pass through the baffle plate assembly, when the air flow touches the baffle plate assembly, liquid drops entrained in the air flow can be gradually settled on the baffle plate assembly, and finally fall down to the bottom of the spraying tank along the downward sliding of the baffle plate, the air flow can continue to rise and finally be discharged through the exhaust pipe, and therefore the liquid drops entrained in the air flow can be mostly blocked, and the spraying tank is prevented from being discharged along with the air flow.

And a space is arranged between the baffle plate assemblies in two adjacent rows, and the baffle plate assemblies are arranged in a staggered manner in the vertical direction. In the baffle plate assembly in the embodiment, the upper row of baffle plate assemblies and the lower row of baffle plate assemblies are arranged in a mutually staggered manner, so that the air flow can touch the baffle plate assemblies as much as possible, namely, the liquid drops entrained in the air flow are intercepted as much as possible. The top of the spray cover 14 is provided with a mounting cover 16 in a conical shape, and the vertex of the mounting cover 16 is arranged upwards. The mounting cap is provided here to facilitate the drop falling downwards.

Example 3:

this example differs from example 2 in that: the cooling device is a vertically arranged tube type heat exchanger 1; a cooling liquid inlet and a cooling liquid outlet are respectively arranged on the shell pass of the tube type heat exchanger 1; the flue gas inlet pipeline 4 and the flue gas outlet pipeline 5 are arranged at the end socket of the tubular heat exchanger 1; and a condensation discharge pipe 6 is arranged at the lower end socket of the tube type heat exchanger 1. The cooling device who uses in this embodiment is shell and tube heat exchanger, and the pipe side is walked to the flue gas, and the shell side is walked to the coolant, and after the light component in the flue gas was condensed, down the landing along the cold pipe that goes, finally falls into in the lower extreme head from arranging the eduction gear in the congealing pipe.

A separation baffle 3 is arranged in an upper end socket of the tubular heat exchanger 1, the flue gas inlet pipeline 4 and the flue gas outlet pipeline 5 are communicated with the upper end socket of the tubular heat exchanger 1 and are respectively positioned on two sides of the separation baffle 3, so that the flue gas forms a U-shaped heat exchange stroke in the tubular heat exchanger 1. In order to increase the heat transfer stroke of flue gas in this embodiment, add in the upper end head and separate the baffle, back in the flue gas gets into the upper end head, owing to separate the setting of baffle so the flue gas can form the heat transfer stroke of U-shaped, for vertical heat transfer stroke, its heat transfer stroke greatly increased, and the heat transfer effect is better, and adds and separates the discharge that the baffle does not influence the condensate.

An emergency pressure relief pipe is arranged at the upper end socket of the tube type heat exchanger 1, and the emergency pressure relief pipe and the flue gas inlet pipeline 4 are located on the same side of the partition plate 3. Set up urgent pressure release pipe in this embodiment, set up the manometer on shell and tube heat exchanger, when emergency appears when its internal pressure is too big, can directly discharge from urgent pressure release pipe department and carry out quick pressure release, urgent pressure release pipe can be connected with the torch system in factory in addition for the flue gas of pressure release directly enters into torch system combustion process.

And the air outlet end of the draught fan 17 is communicated with the drying tank 18 and the activated carbon tank 22 in sequence. The drying tank and the activated carbon tank are additionally arranged at the air outlet end of the induced draft fan for further processing the sprayed air flow, removing moisture and other gases which cannot be absorbed by the spraying liquid, and then discharging the gases into the atmosphere. The desiccant in the desiccant canister and the activated carbon in the activated carbon canister are of the type commonly used by those skilled in the art and will not be described in detail.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides an asphalt flue gas processing apparatus, includes cooling device and spray set, its characterized in that: the asphalt flue gas enters the cooling device through a flue gas inlet pipeline (4), and the cooled airflow enters the spraying device through a flue gas outlet pipeline (5); the spraying device comprises a spraying tank (2), a spraying cover (14) which is fixed in the spraying tank (2) through a plurality of support columns (15) and has a downward opening, a first spraying component arranged in the spraying cover (14) and a second spraying component arranged outside the spraying cover (14); the first spray assembly is a spray disc (13) fixed on the top of the spray cover (14); the second spraying assembly is a spiral pipe (11) arranged around a spraying cover (14), and the spiral pipe (11) is fixed on the outer wall of the spraying cover (14) or the inner wall of the spraying tank (2); the lower surfaces of the spray disc (13) and the spiral pipe (11) are provided with a plurality of downward spray heads; spaces are arranged between the bottom and the top of the spray cover (14) and the inner wall of the spray tank (2); one end of the spiral pipe (11) is closed, and the other end of the spiral pipe is communicated with a second liquid inlet pipe (12); the spray disc (13) is communicated with a first liquid inlet pipe (10); the first liquid inlet pipe (10) and the second liquid inlet pipe (12) both extend out of the spray tank (2); liquid for spraying the flue gas enters the spraying device from the first liquid inlet pipe (10) and the second liquid inlet pipe (12) respectively; the end part of the flue gas outlet pipeline (5) positioned in the spray tank (2) extends to the upper part of the spray cover (14); the bottom of spraying tank (2) is provided with fluid-discharge tube (21), and its top is provided with blast pipe (9), blast pipe (9) and the air inlet end intercommunication of draught fan (17).

2. The asphalt flue gas treatment device according to claim 1, wherein: a plurality of layers of baffle plate assemblies are arranged on the part, positioned above the first spraying assembly and the spraying cover (14), in the spraying tank (2); each gear baffle assembly comprises a plurality of baffles which are arranged at intervals; each baffle consists of a left baffle (7) and a right baffle (8) which are fixed on the inner wall of the spraying tank (2) and have opposite inclination directions, the upper ends of the left baffle (7) and the right baffle (8) are connected together, and the left baffle and the right baffle form a herringbone structure.

3. The asphalt flue gas treatment device according to claim 2, wherein: and a space is arranged between the baffle plate assemblies of the two adjacent layers, and the baffle plates in the baffle plate assemblies of the two layers are arranged in a staggered manner in the vertical direction.

4. The asphalt flue gas treatment device according to claim 1, wherein: the cooling device is a vertically arranged tube type heat exchanger (1); a cooling liquid inlet and a cooling liquid outlet are respectively arranged on the shell side of the tube type heat exchanger (1); the flue gas inlet pipeline (4) and the flue gas outlet pipeline (5) are arranged at the end socket of the tube type heat exchanger (1); and a condensation discharge pipe (6) is arranged at the lower end socket of the tube type heat exchanger (1).

5. The asphalt flue gas treatment device according to claim 4, wherein: a separation baffle (3) is arranged in an upper end socket of the tubular heat exchanger (1), the flue gas inlet pipeline (4) and the flue gas outlet pipeline (5) are communicated with the upper end socket of the tubular heat exchanger (1), and the flue gas inlet pipeline and the flue gas outlet pipeline are respectively positioned on two sides of the separation baffle (3), so that the flue gas forms a U-shaped heat exchange stroke in the tubular heat exchanger (1).

6. The asphalt flue gas treatment device according to claim 5, wherein: an emergency pressure relief pipe is arranged at the upper end sealing head of the tube type heat exchanger (1), and the emergency pressure relief pipe and the flue gas inlet pipeline (4) are located on the same side of the partition plate (3).

7. The asphalt flue gas treatment device according to claim 5, wherein: a liquid collecting pool (19) is arranged below the spraying device, and the liquid discharge pipe (21) extends into the liquid collecting pool (19); a filter screen (20) is arranged at the upper part of the liquid collecting pool (19), and the end part of the liquid discharge pipe (21) is positioned above the filter screen (20).

8. The asphalt flue gas treatment device according to claim 1, wherein: and the air outlet end of the induced draft fan (17) is communicated with the drying tank (18) and the activated carbon tank (22) in sequence.

9. The asphalt flue gas treatment device according to claim 1, wherein: the spiral tubes (11) are arranged in an Archimedes spiral form.

10. The asphalt flue gas treatment device according to claim 1, wherein: the top of the spraying cover (14) is provided with a conical mounting cover (16), and the vertex of the mounting cover (16) is arranged upwards.