CN220802398U - Filter for reducing blockage of flame arrester of crude benzene deslagging tail gas pipeline - Google Patents
Filter for reducing blockage of flame arrester of crude benzene deslagging tail gas pipeline Download PDFInfo
- Publication number
- CN220802398U CN220802398U CN202322640785.6U CN202322640785U CN220802398U CN 220802398 U CN220802398 U CN 220802398U CN 202322640785 U CN202322640785 U CN 202322640785U CN 220802398 U CN220802398 U CN 220802398U
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- China
- Prior art keywords
- filter
- pipeline
- screen
- tail gas
- flame arrester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 239000013049 sediment Substances 0.000 claims description 15
- 238000010030 laminating Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 23
- 239000007789 gas Substances 0.000 abstract description 16
- 239000002912 waste gas Substances 0.000 abstract description 15
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 5
- 230000008676 import Effects 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model belongs to the technical field of tail gas filtration, and particularly relates to a filter for reducing the blockage of a flame arrester of a crude benzene deslagging tail gas pipeline, wherein the filter is of a sealed tank-shaped structure, the filter is arranged between a deslagging tank and the flame arrester, a tail gas port of the deslagging tank is connected with an inlet below the filter by virtue of a first pipeline, an inlet of the flame arrester is connected with an outlet above the filter by virtue of a second pipeline, a filter screen is arranged in a filter chamber, a plane of the filter screen is perpendicular to the inlet direction of the filter, the edge of the filter screen is fixedly attached to the inner wall of the filter, the filter screen divides the filter chamber into an upper chamber and a lower chamber, and the upper chamber and the lower chamber of the filter are respectively connected with a steam pipeline. According to the utility model, the screen in the filter is used for prefiltering the waste gas containing the oil smoke to intercept part of the oil smoke, so that the amount of the oil smoke entering the rear pipeline is reduced, and the cleaning frequency of the flame arrester is reduced.
Description
Technical Field
The utility model belongs to the technical field of tail gas filtration, and particularly relates to a filter for reducing blockage of a flame arrester of a crude benzene deslagging tail gas pipeline.
Background
In order to further improve the environmental protection requirement, the dry slag discharged from the debenzolization tower is transformed into thin slag, the main components of the thin slag are tar slag, wash oil and the like, and the discharge temperature is higher and can reach 180 ℃ at most. Therefore, a large amount of oil smoke is generated in the deslagging process, and the part of waste gas is collected and sent to a treatment system for protecting the environment. Because the wash oil has combustibility, and the slag discharge groove is connected with the benzene removal tower, a flame arrester is often required to be installed on an exhaust gas collecting pipeline of the slag discharge groove, the flame arrester is of a pore structure, the flame arrester is easy to be blocked by the exhaust gas containing oil smoke, and the flame arrester is installed on a pipeline, so that disassembly, cleaning and the like are difficult.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides the filter for reducing the blockage of the flame arrester of the crude benzene deslagging tail gas pipeline, the filter is used for prefiltering the oil smoke-containing waste gas through the silk screen in the filter, so that part of oil smoke is intercepted, the amount of the oil smoke entering a rear pipeline is reduced, and the cleaning frequency of the flame arrester is reduced.
The utility model adopts the specific technical scheme that:
A filter for reducing thick benzene arranges sediment tail gas pipeline flame arrester and blocks up, the filter is sealed tank column structure, and the filter sets up between row's sediment groove and flame arrester, the tail gas mouth of row's sediment groove is with the help of the access connection of first pipeline and filter below, the import of flame arrester is with the help of the exit linkage of second pipeline and filter top, the filter cavity is provided with the filter screen, the plane that the filter screen is located is perpendicular with filter import direction, the filter screen edge is fixed with the laminating of filter inner wall, the filter screen separates the filter cavity into cavity and lower cavity, the last cavity and the lower cavity of filter are connected with steam conduit respectively.
The filter screen comprises a screen and a grating which are horizontally arranged in the filter cavity, the grating is attached and fixed to the inner wall of the filter, the screen is fixed in the filter cavity by means of the grating, and the screen is used for transversely plugging the inside of the filter.
The grid comprises an annular fixing ring matched with the filter chamber and a plurality of parallel grid plates distributed in rows, the distance between every two adjacent grid plates is 45-55mm, the vertical direction of each grid plate is 45-55mm, and the horizontal direction of each grid plate is 8-12mm thick.
The filter comprises a tank body and a cleaning cover positioned at the opening of the tank body, and the filter cavity is sealed by the cleaning cover.
And a bypass branch pipe is further connected between the first pipeline and the second pipeline, and a first stop valve is arranged on the bypass branch pipe.
The filter is connected with the blow-down pipe, be provided with the second valve that cuts off on the blow-down pipe, confined filter cavity communicates with external environment with the help of the blow-down pipe.
The beneficial effects of the utility model are as follows:
1. According to the utility model, a filter with a filter screen is additionally arranged between a slag discharge groove and a flame arrester, when slag is discharged from a benzene removal tower, oil-containing smoke waste gas generated by discharging thin slag into the slag discharge groove enters an inner cavity of the filter through a tail gas port of the slag discharge groove along an inlet of the filter, the waste gas rises upwards and is filtered through a silk screen, part of oil smoke in the waste gas is intercepted by the filter screen, and the rest of the waste gas passes through the flame arrester from an outlet of the filter and finally enters a subsequent treatment system; the thin sediment stops getting into the sediment groove after the benzene removal tower arranges sediment, open steam valve this moment, steam gets into in the last cavity and the lower cavity of filter along steam piping, the oil smoke that hangs on the filter screen forms under the steam effect sweeps, and flow into the sediment groove along with thin sediment through the filter import, jointly handle along with thin sediment, the steam that does not liquefy gets into rear processing system through the flame arrester through the filter export, through utilizing the filter, can effectively reduce the oil smoke content in the waste gas that gets into the flame arrester, thereby reduce the clearance frequency of flame arrester, simultaneously sweep the oil smoke that solidifies on the filter screen through steam, can reduce the manual work and to the clearance frequency of filter screen, when sweeping the filter screen in addition, gas-liquid two phases all get back into the middle of the system, the pollution to external environment has been avoided.
Drawings
FIG. 1 is a schematic diagram of the process line of the present utility model when deslagging in a debenzolization tower;
FIG. 2 is a schematic diagram of the process line of the present utility model when the filter screen is purged with steam;
FIG. 3 is a schematic view of a filter;
FIG. 4 is a schematic view of the structure of the grille;
In the attached drawings, 1, a slag discharging groove, 2, a flame arrester, 3, a first pipeline, 4, a second pipeline, 5, a steam pipeline, 6, a silk screen, 7, a grille, 8, a fixing ring, 9, a grid plate, 10, a tank body, 11, a cleaning cover, 12, a bypass branch pipe, 13, a first stop valve, 14, a blow-down pipe, 15 and a second stop valve.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific examples:
1-4, the utility model provides a filter for reducing the blockage of a flame arrester of a crude benzene deslagging tail gas pipeline, the filter is of a sealed pot-shaped structure, the filter is arranged between a deslagging tank 1 and a flame arrester 2, a tail gas port of the deslagging tank 1 is connected with an inlet below the filter by virtue of a first pipeline 3, an inlet of the flame arrester 2 is connected with an outlet above the filter by virtue of a second pipeline 4, a filter screen is arranged in a filter cavity, the plane of the filter screen is perpendicular to the inlet direction of the filter, the edge of the filter screen is attached and fixed to the inner wall of the filter, the filter screen divides the filter cavity into an upper cavity and a lower cavity, and the upper cavity and the lower cavity of the filter are respectively connected with a steam pipeline 5.
Because a large amount of oil smoke can be produced in the current process of removing the thin slag of the benzene removal tower, the oil smoke is required to be collected and sent to a treatment system, and wash oil contained in the thin slag has combustibility, and the slag discharge groove 1 is connected with the benzene removal tower, so that the fire arrestor 2 is always required to be installed on an exhaust gas collecting pipeline of the slag discharge groove 1, the fire arrestor 2 is of a pore structure, the fire arrestor 2 is easily blocked by the exhaust gas containing the oil smoke, and the fire arrestor 2 is installed on a pipeline, so that disassembly, cleaning and the like are difficult.
In order to solve the problems, a filter with a filter screen is additionally arranged between a slag discharge groove 1 and a flame arrester 2, as shown in figure 1, when slag is discharged from a benzene removal tower, thin slag enters the slag discharge groove 1, oil smoke-containing waste gas generated by the thin slag discharge into the slag discharge groove 1 enters an inner cavity of the filter through an air outlet of the slag discharge groove 1 along an inlet of the filter, the waste gas rises upwards and is filtered by the filter screen, part of oil smoke in the waste gas is intercepted by the filter screen, and the rest waste gas passes through the flame arrester 2 from an outlet of the filter and finally enters a subsequent treatment system; the thin sediment stops entering slag discharge tank 1 after the benzene removal tower is arranged sediment, open steam valve this moment, steam gets into in the upper chamber and the lower cavity of filter along steam conduit 5, as shown in fig. 2, the oil smoke of hanging on the filter screen forms the sweeping under the steam effect, and flow into slag discharge tank 1 along with the steam of liquefaction through the filter import, jointly handle along with thin sediment, the steam that does not liquefy gets into rear processing system through flame arrester 2 through the filter export, through utilizing the filter, can effectively reduce the oil smoke content in the waste gas that gets into flame arrester 2, thereby reduce the clearance frequency of flame arrester 2, simultaneously can sweep the oil smoke that solidifies on the filter screen through steam, can reduce the clearance frequency of manual work to the filter screen, in addition when sweeping the filter screen, gas-liquid two phases all get back into the middle of the system, the pollution to external environment has been avoided.
As shown in fig. 3, the filter screen comprises a screen 6 and a grid 7 horizontally arranged in the filter chamber, the grid 7 is fixedly attached to the inner wall of the filter, the screen 6 is fixed in the filter chamber by means of the grid 7, the screen 6 transversely seals the inside of the filter, the grid 7 is fixed in the filter chamber, the screen 6 is placed above the grid 7, the screen 7 supports the screen 6 to be fixed in position, the screen 6 can form position fixing without a fixing structure, and the screen 6 is convenient to replace.
As shown in fig. 4, the grating 7 includes an annular fixing ring 8 matched with the filter chamber and a plurality of parallel grating plates 9 distributed in rows, the spacing between adjacent grating plates 9 is 45-55mm, the vertical direction of the grating plates 9 is 45-55mm, the horizontal direction of the grating plates 9 is 8-12mm thick, and by the size of the grating plates 9, enough distance is provided between the grating plates 9 for oil smoke to pass through, so that the grating plates 9 can be prevented from being stuck with more oil smoke on the grating 7 on the premise of fixing the position of the supporting silk screen 6.
As shown in fig. 3, the filter includes a tank body 10 and a cleaning cover 11 located at an opening of the tank body 10, the filter chamber is sealed by the cleaning cover 11, and if the filter screen is blocked seriously, the cleaning cover 11 can be opened to remove the screen 6 for cleaning or replacement when the steam purging cannot clean the filter screen.
As shown in fig. 1, a bypass branch pipe 12 is further connected between the first pipeline 3 and the second pipeline 4, a first stop valve 13 is disposed on the bypass branch pipe 12, and in the cleaning process, the stop valve of the first pipeline 3 is closed, and the first stop valve 13 of the bypass branch pipe 12 is opened, so that the waste gas can still directly enter the subsequent treatment system through the flame arrester 2 without stopping the whole treatment system.
As shown in fig. 1, the filter is connected with a blow-down pipe 14, a second stop valve 15 is disposed on the blow-down pipe 14, the closed filter chamber is communicated with the external environment by means of the blow-down pipe 14, when the cleaning cover 11 needs to be opened, in order to avoid the risk of excessively large air pressure in the filter chamber and instantaneous pressure relief, the second stop valve 15 needs to be opened first and the blow-down pipe 14 is utilized to perform pressure relief, so that the pressure of the filter chamber is consistent with that of the external environment.
As shown in fig. 1, the slag discharge groove 1 is also provided with a breather valve which is used as a safety measure, and when the blockage is not cleaned, the breather valve is used as an exhalation port of waste gas, so that the excessive pressure in the filtering chamber and the slag discharge groove 1 is avoided.
Claims (6)
1. A filter for reducing crude benzene arranges sediment tail gas pipeline flame arrester jam, its characterized in that, the filter is sealed pot-shaped structure, and the filter sets up between sediment groove (1) and flame arrester (2), the tail gas mouth of sediment groove (1) is with the aid of the access connection of first pipeline (3) and filter below, the access connection of flame arrester (2) with the aid of second pipeline (4) and filter top, the filter cavity is provided with the filter screen, the plane that the filter screen is located is perpendicular with filter inlet direction, the filter screen edge is fixed with the laminating of filter inner wall, the filter screen separates the filter cavity into upper chamber and lower cavity, the upper chamber and the lower cavity of filter are connected with steam conduit (5) respectively.
2. The filter for reducing blockage of a flame arrester of a crude benzene slagging tail gas pipeline according to claim 1, wherein the filter screen comprises a screen (6) and a grating (7) which are horizontally arranged in a filter cavity, the grating (7) is attached and fixed with the inner wall of the filter, the screen (6) is fixed in the filter cavity by means of the grating (7), and the screen (6) transversely seals the inside of the filter.
3. A filter for reducing the clogging of a flame arrestor for a crude benzene slagging tail gas pipe according to claim 2, characterized in that, the grating (7) comprises an annular fixing ring (8) matched with the filter chamber and a plurality of parallel grating plates (9) distributed in rows, the spacing between adjacent grating plates (9) is 45-55mm, the vertical direction width of the grating plates (9) is 45-55mm, and the horizontal direction thickness of the grating plates (9) is 8-12mm.
4. A filter for reducing clogging of a flame arrestor for a crude benzene slagging tail gas pipe according to claim 1, characterised in that the filter comprises a tank (10) and a cleaning cover (11) at the opening of the tank (10), the filter chamber being sealed by means of the cleaning cover (11).
5. A filter for reducing the blockage of a flame arrester of a crude benzene slagging tail gas pipeline according to claim 1, characterized in that a bypass branch pipe (12) is also connected between the first pipeline (3) and the second pipeline (4), and a first stop valve (13) is arranged on the bypass branch pipe (12).
6. A filter for reducing the plugging of a flame arrestor for a crude benzene slagging tail gas pipe according to claim 1, characterised in that the filter is connected with a blow-down pipe (14), the blow-down pipe (14) is provided with a second shut-off valve (15), and the closed filter chamber is connected to the environment by means of the blow-down pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322640785.6U CN220802398U (en) | 2023-09-28 | 2023-09-28 | Filter for reducing blockage of flame arrester of crude benzene deslagging tail gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322640785.6U CN220802398U (en) | 2023-09-28 | 2023-09-28 | Filter for reducing blockage of flame arrester of crude benzene deslagging tail gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220802398U true CN220802398U (en) | 2024-04-19 |
Family
ID=90708626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322640785.6U Active CN220802398U (en) | 2023-09-28 | 2023-09-28 | Filter for reducing blockage of flame arrester of crude benzene deslagging tail gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220802398U (en) |
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2023
- 2023-09-28 CN CN202322640785.6U patent/CN220802398U/en active Active
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