CN207996540U - A kind of adsorption tower backwashing system - Google Patents
A kind of adsorption tower backwashing system Download PDFInfo
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- CN207996540U CN207996540U CN201721908536.9U CN201721908536U CN207996540U CN 207996540 U CN207996540 U CN 207996540U CN 201721908536 U CN201721908536 U CN 201721908536U CN 207996540 U CN207996540 U CN 207996540U
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Abstract
The utility model belongs to aromatics absorption engineering device technique field, and in particular to a kind of adsorption tower backwashing system and method.Grid and the holes n-th layer V grid in n-th layer are set gradually below bed N to be rinsed, the n-th layer strippant inlet duct is connected to the adsorption tower tower wall between grid and the holes n-th layer V grid in n-th layer, n-th layer Extract pipeline is connected to the adsorption tower tower wall on grid top in n-th layer, the adsorption tower tower wall on the grid top on the N-1 layers of bed N last layers to be rinsed is arranged in N-1 layers of feed pipe, and the adsorption tower tower wall on the grid top on one layer of N+1 layers at bed N to be rinsed is arranged in N+1 layers of strippant inlet duct.The utility model only needs under suspended state without scrapping adsorbent, carries out a kind of backwash operation, can develop the adsorbent leaked out, reduce bed pressure difference, continue the production that goes into operation.
Description
Technical field
The utility model belongs to aromatics absorption engineering device technique field, and in particular to a kind of adsorption tower backwashing system.
Background technology
Core equipment --- the adsorption tower of aromatic hydrocarbons factory adsorbent equipment.Adsorption tower uses Axens technologies, in adsorption tower
Equipped with adsorbent, 24 beds are shared.The each bed of adsorption tower is equipped with adsorbent, has 2 layers of grid interval between each bed, works as suction
Attached tower has one layer of adsorbent to leak, and after the adsorbent of leakage falls into grid, causes single bed pressure difference to rise, when single bed pressure
Difference goes up to design pressure difference 70KPa(The Axens technological requirement upper limits), device will be unable to run, and shut-down (breakdown) mainteance be needed, because of adsorbent water
Content requirement is less than 8%, adsorbent will be caused to scrap after exceeded, and because of shut-down (breakdown) mainteance adsorption tower, there is oil in the inside, need to move back oily boiling, inhales
Attached dose is necessarily scrapped, and adsorbent is expensive, the more than one hundred million members of cost.
Invention content
In view of the defect of the prior art, on the one hand the utility model provides a kind of adsorption tower backwashing system, without scrapping
Adsorbent only needs under suspended state, carries out a kind of backwash operation, can develop the adsorbent leaked out, reduces bed
Lamination is poor, continues the production that goes into operation.
In order to achieve the above object, on the one hand technical solution used by the utility model is adsorption tower backwashing system,
It include grid in n-th layer, the holes n-th layer V grid, n-th layer strippant inlet duct, n-th layer Extract pipeline, N-1 layers into
Pipe material, N+1 layers of strippant inlet duct;Grid and n-th layer V cells in n-th layer are set gradually below bed N to be rinsed
Grid, the n-th layer strippant inlet duct are connected to the adsorption tower tower wall between grid and the holes n-th layer V grid, N in n-th layer
Layer Extract pipeline is connected to the adsorption tower tower wall on grid top in n-th layer, and N-1 layers of feed pipe are arranged in bed to be rinsed
The adsorption tower tower wall on grid top on the N-1 layers of N last layers, N+1 layers of strippant inlet duct are arranged in bed N to be rinsed
The adsorption tower tower wall on grid top on next layer of N+1 layers.
Further, the N-1 layers of feed pipe includes first pipe and second pipe, is arranged in the first pipe
The second valve is arranged on the second pipe in first valve.
Further, the n-th layer Extract pipeline includes third pipeline and the 4th pipeline, is arranged on the third pipeline
The 4th valve is arranged on the 4th pipeline for third valve.
Further, the 5th valve is set on the N+1 layers of strippant inlet duct.
Further, the 6th valve is set on the n-th layer strippant inlet duct.
The utility model use a kind of adsorption tower back-flushing method, be substantially adsorption tower by N-1 layer charging with
N-th layer strippant enters adsorption tower, and n-th layer raffinate goes out adsorption tower, and the adsorbent in n-th layer on grid is gone out;Adsorption tower
Enter adsorption tower by N-1 layers of charging and N+1 layers of strippant, adsorption tower is gone out by n-th layer Extract pipeline raffinate, it will
Adsorbent in the grid of the holes n-th layer V is gone out.
Further, n-th layer is bed N to be rinsed, and the N-1 layers of last layer for bed N to be rinsed, N+1 layers are to wait for
Rinse next layer of bed N.
Further, method is as follows:
Step 1:Adsorption tower switch valve is successively switched to backwash and prepares bed, the first valve and the second valve are opened,
Remaining valve is closed;
Step 2:It is 250 m by Extract flow setting value3/ h, strippant flow setting value are 350 m3/ h, feed rate
Setting value is 250 m3/h;
Step 3:Open third valve;
Step 4:The first valve is closed, the 4th valve is opened;The 6th valve is opened, confirms that the 6th valve is opened;All cut
To backwash bed, continue 30 minutes;
Step 5:The 5th valve is opened, after confirming that the 5th valve is opened, closes the 6th valve, strippant flow is carried to setting value
For 350 m3/ h, feeding flow magnitude are 250 m3/ h, about 10 minutes duration;
Step 6:After ten minutes, backwash flow is improved, slowly improves strippant flow to 500 m3/ h, total backwash stream
Measure 750 m3/ h continues 30 minutes.
The utility model has the advantage of:Without scrapping adsorbent, only needs under suspended state, carry out a kind of backwash behaviour
Make, the adsorbent leaked out can be developed, reduces bed pressure difference, continue the production that goes into operation.
Description of the drawings
Fig. 1 is the structure chart of the utility model;
Fig. 2 is the schematic diagram for rinsing grid in n-th layer;
Fig. 3 is the schematic diagram for rinsing the holes n-th layer V grid;
Fig. 4 interface schematic diagrams in order to control;
In figure:1, grid on N layers, 2, the holes n-th layer V grid, 3, n-th layer strippant inlet duct, 4, n-th layer extract liquid pipe out
Road, 5, N-1 layers of feed pipe, 6, N+1 layers of strippant inlet duct, 7, grid on N-1 layers, 8, grid on N+1 layers,
9, first pipe, 10, second pipe, the 11, first valve, the 12, second valve, 13, third pipeline, the 14, the 4th pipeline, 15,
Three valves, the 16, the 4th valve, the 17, the 5th valve, the 18, the 6th valve.
Specific implementation mode
In order to further appreciate that the technical solution of utility model, it is described as follows below in conjunction with the accompanying drawings.
A kind of adsorption tower backwashing system comprising grid 1, the holes n-th layer V grid 2, n-th layer strippant entrance in n-th layer
Pipeline 3, n-th layer Extract pipeline 4, N-1 layers of feed pipe 5, N+1 layers of strippant inlet duct 6;Bed N's to be rinsed
Lower section sets gradually grid 1 and the holes n-th layer V grid 2, the n-th layer strippant inlet duct 3 in n-th layer and is connected in n-th layer
Adsorption tower tower wall between grid 1 and the holes n-th layer V grid 2, n-th layer Extract pipeline 4 are connected to 1 top of grid in n-th layer
The absorption on 7 top of grid on the N-1 layers of bed N last layers to be rinsed is arranged in adsorption tower tower wall, N-1 layers of feed pipe 5
The suction on 8 top of grid on one layer of N+1 layers at bed N to be rinsed is arranged in tower tower wall, N+1 layers of strippant inlet duct 6
Attached tower tower wall.
Further, the N-1 layers of feed pipe 5 includes first pipe 9 and second pipe 10, the first pipe 9
The second valve 12 is arranged on the second pipe 10 in the first valve 11 of upper setting.
Further, the n-th layer Extract pipeline 4 includes third pipeline 13 and the 4th pipeline 14, the third pipeline
Third valve 15 is set on 13, the 4th valve 16 is set on the 4th pipeline 14.
Further, the 5th valve 17 is set on the N+1 layers of strippant inlet duct 6.
Further, the 6th valve 18 is set on the n-th layer strippant inlet duct 3.
A kind of adsorption tower back-flushing method is substantially adsorption tower and enters suction by N-1 layers of charging and n-th layer strippant
Attached tower goes out adsorption tower by n-th layer Extract pipeline raffinate, the adsorbent in n-th layer on grid is gone out;Adsorption tower passes through
N-1 layers of charging and N+1 layers of strippant enter adsorption tower, go out adsorption tower by n-th layer Extract pipeline raffinate, by N
Adsorbent in the grid of the holes layer V is gone out.
Further, n-th layer is bed N to be rinsed, and the N-1 layers of last layer for bed N to be rinsed, N+1 layers are to wait for
Rinse next layer of bed N.
Further, method is as follows:
Step 1:Adsorption tower switch valve is successively switched to backwash and prepares bed, the first valve and the second valve are opened,
Remaining valve is closed;
Step 2:It is 250 m by Extract flow setting value3/ h, strippant flow setting value are 350 m3/ h, feed rate
Setting value is 250 m3/h;
Step 3:Open third valve;
Step 4:The first valve is closed, the 4th valve is opened;The 6th valve is opened, confirms that the 6th valve is opened;All cut
To backwash bed, continue 30 minutes;
Step 5:The 5th valve is opened, after confirming that the 5th valve is opened, closes the 6th valve, strippant flow is carried to setting value
For 350 m3/ h, feeding flow magnitude are 250 m3/ h, about 10 minutes duration;
Step 6:After ten minutes, backwash flow is improved, slowly improves strippant flow to 500 m3/ h, total backwash stream
Measure 750 m3/ h continues 30 minutes.
Concrete operation method:
One, adsorbent equipment is stopped work, and establishes short cycle, and adsorption tower stops sequence and stops circulating pump:
1, before stopping work, adsorbent equipment reduces load, and adsorption tower switching time adds 0.5 second every 1 cycle, switching time.
It is down to load 80% or so.
2, reaction system is cut off, hot hydrogen band oil.
3, adsorbent equipment short circuit current journey is established.
4, stoppage in transit adsorption tower water injecting pump P2602.
5, by circulating pump motor fault-signal, pump flow is low, absorption feed rate is low, strippant flow is less than connection
Lock bypass.
6, the standby pump warming-up line of adsorption tower circulating pump is closed, the public suction inlet valve of adsorption tower is opened.
7, adsorbent program is cut off.
8, stop adsorption tower circulating pump double pump to cut off.
9, adsorption tower end socket is rinsed and is closed.
10, all bypass valves of adsorption tower are closed.
Two, 9 layers of backwash of adsorption tower:
1, adsorption tower switch valve is successively switched to backwash and prepares bed, i.e. XV26408;XV26108;XV26208;
XV26308 is opened, rest switch valve closing state.
2, flow is adjusted:It is 250 m by Extract flow setting value3/ h, 350 m of strippant flow set3/ h, charging
250 m3/ h, raffinate continue to beat automatic 0.9Mpa.
3, the first step:Such as attached drawing 4, XV26209 is opened first.
3, second step:XV26208 is closed, XV26409 is opened, closes XV26408;XV26109 is opened, is closed
XV26108;Confirm that XV26308 is opened.It all is switched to backwash bed, continues 30 minutes.
4, third walks:Then it carries out in next step, such as attached drawing 2, opening strippant XV26110, after confirming that XV26110 is opened, close
Close strippant XV26109, strippant flow is carried to setting 350 m3/ h feeds 250 m3/ h, raffinate continue to beat automatic 0.9Mpa,
About 10 minutes duration(600 m of total backwash flow3/h).
5, the 4th step:After ten minutes, backwash flow is improved, slowly improves strippant flow to 500 m3/ h, it is total to recoil
Wash 750 m of flow3/ h continues 30 minutes.
6, the adsorbent that each step is gone out can be flushed in rear pipe filter, pipe filter after need to clearing up in time, and be claimed
Adsorbent weight is leaked out again to count.Interior behaviour makes a record, and adsorbent recycling statistics is carried out at scene.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (4)
1. a kind of adsorption tower backwashing system, it is characterised in that:Including grid, the holes n-th layer V grid, n-th layer desorption in n-th layer
Agent inlet duct, n-th layer Extract pipeline, N-1 layers of feed pipe, N+1 layers of strippant inlet duct;Bed N to be rinsed
Lower section set gradually grid and the holes n-th layer V grid, the n-th layer strippant inlet duct in n-th layer and be connected in n-th layer
Adsorption tower tower wall between grid and the holes n-th layer V grid, n-th layer Extract pipeline are connected to the absorption on grid top in n-th layer
The adsorption tower tower wall on the grid top on the N-1 layers of bed N last layers to be rinsed is arranged in tower tower wall, N-1 layers of feed pipe,
The adsorption tower tower wall on the grid top on one layer of N+1 layers at bed N to be rinsed is arranged in N+1 layers of strippant inlet duct.
2. a kind of adsorption tower backwashing system according to claim 1, it is characterised in that:The N-1 layers of feed pipe
Including first pipe and second pipe, the first valve is set in the first pipe, the second valve is set on the second pipe.
3. a kind of adsorption tower backwashing system according to claim 1, it is characterised in that:The n-th layer Extract pipeline
Including third pipeline and the 4th pipeline, third valve is set on the third pipeline, the 4th valve is set on the 4th pipeline.
4. a kind of adsorption tower backwashing system according to claim 1, it is characterised in that:The N+1 layers of strippant enters
The 5th valve is set on mouth pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721908536.9U CN207996540U (en) | 2017-12-30 | 2017-12-30 | A kind of adsorption tower backwashing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721908536.9U CN207996540U (en) | 2017-12-30 | 2017-12-30 | A kind of adsorption tower backwashing system |
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| CN207996540U true CN207996540U (en) | 2018-10-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930343A (en) * | 2017-12-30 | 2018-04-20 | 大连福佳·大化石油化工有限公司 | Adsorption tower backwashing system and method |
| CN112546675A (en) * | 2020-12-28 | 2021-03-26 | 大连福佳·大化石油化工有限公司 | Improved steam stripping structure of adsorption tower for leaking agent from bed layer |
-
2017
- 2017-12-30 CN CN201721908536.9U patent/CN207996540U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930343A (en) * | 2017-12-30 | 2018-04-20 | 大连福佳·大化石油化工有限公司 | Adsorption tower backwashing system and method |
| CN107930343B (en) * | 2017-12-30 | 2024-02-20 | 大连福佳·大化石油化工有限公司 | Adsorption tower back flushing system and method |
| CN112546675A (en) * | 2020-12-28 | 2021-03-26 | 大连福佳·大化石油化工有限公司 | Improved steam stripping structure of adsorption tower for leaking agent from bed layer |
| CN112546675B (en) * | 2020-12-28 | 2023-10-13 | 大连福佳·大化石油化工有限公司 | Improved structure of adsorption tower stripping of bed leakage agent |
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