CN106179136A - A kind of outer riser total enclosing anti-coking method and settler - Google Patents
A kind of outer riser total enclosing anti-coking method and settler Download PDFInfo
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- CN106179136A CN106179136A CN201510221764.8A CN201510221764A CN106179136A CN 106179136 A CN106179136 A CN 106179136A CN 201510221764 A CN201510221764 A CN 201510221764A CN 106179136 A CN106179136 A CN 106179136A
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- settler
- coking
- flutter valve
- cyclone cylinder
- cylinder
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Abstract
A kind of outer riser total enclosing anti-coking method, belongs to petrochemical industry, fluidization technology field, is used for solving reacting-settler, flutter valve coking problem.Discharge including reaction oil gas and catalyst sharp separation, catalyst, push up rotation the second-order separation, dipleg and flutter valve discharge catalyst, it is characterized in that: use the cyclone cylinder of Negative Pressure Difference discharge to divide soon, and be connected with top rotation total enclosing, oil gas is greatly shortened at the settler time of staying, reduction dry gas yied, raising product yield；Design steam isolation facility avoids settler coking, design steam blowing facility to avoid flutter valve coking, design overlap joint supporting, guiding facility to make cyclone cylinder set up separately soon and execute stable, safe operation.Additionally provide and realize the dividing soon containing cyclone cylinder of the inventive method, division board, the settler of steam out cylinder and kuppe.Solve settler, flutter valve coking problem, be applied to outer riser heavy oil catalytically cracking equipment etc..
Description
Technical field
The invention belongs to petrochemical industry, fluidizing apparatus technical field, particularly to the outer riser total enclosing anti-coking method of one
And settler.
Background technology
Refinery catalytic cracking unit's riser reactor outlet is designed with fast point, whole with the sharp separation of catalyst to realize oil gas
Only oil gas cracking reaction.Catalytic cracking unit leg outlet generally uses 2 simple cyclone separator (being called for short thick rotation), effect
Rate is up to more than 95%, and thick spin material leg is discharge catalyst under positive differential pressure, discharges 15%～30% oil gas, this part oil gas simultaneously
Ascending at a slow speed top in settler and screw in mouth, more than 30 seconds, at high temperature there is transition in the settler time of staying in oil gas
Thermal cracking, condensation reaction, affect yield of light oil, easily in settler, flutter valve coking during processing heavy oil.Some devices will
Thick rotation exhaustor extends up to top rotation entrance and is flexible coupling, and the part oil gas time of staying that thick spin material leg is discharged is longer, sedimentation
Device, flutter valve coking are even more serious.
For solving settler coking problem, patent CN2716269Y uses thick rotation exhaustor to screw in mouth airtight connection with top, in sedimentation
Arranging airway in device, inlet tube is connected, lower end is uncovered and reaches to settler bottom with top rotation in its upper end, it is intended to will slightly revolve material
Lower limb is discharged oil gas and is derived from settler bottom, thus shortens oil gas and in the settler time of staying and solve settler coking problem.
But the thick spin material leg of this scheme remains positive differential pressure discharge, still there is 15%～30% oil gas to discharge from thick spin material leg, make settler bottom
There is a large amount of oil gas, settler bottom and flutter valve still have coking to be inclined to, and additionally program airway designs the operation fluctuation of improper device
Shi Rongyi introduces catalyst stack less.
Summary of the invention
It is an object of the invention to provide the outer riser total enclosing anti-coking method of one, be prevented effectively from oil gas at settler, flutter valve knot
Jiao, facility is stable, safe operation.
The present invention solves the scheme that its technical problem used: include reaction oil gas and catalyst sharp separation, catalyst discharge,
Top rotation the second-order separation, dipleg and flutter valve discharge catalyst, it is characterized in that: use the cyclone cylinder of Negative Pressure Difference discharge to divide soon, and with top
Rotation total enclosing connects, and oil gas is greatly shortened at the settler time of staying, reduction dry gas yied, raising product yield；Design is steamed
Vapour isolation facility avoids settler coking, design steam blowing facility to avoid flutter valve coking, design overlap joint supporting, guiding facility to make
Cyclone cylinder sets up separately soon executes stable, safe operation.
Further, purge gas enters cyclone cylinder from end opening together with stripping gas and divides soon, or it is fast to enter cyclone cylinder from end opening after water conservancy diversion
Point.
A kind of outer riser total enclosing anti-coking settler, including settler, riser, stripping section, anti-scorch steam loop, top
Rotation, dipleg, flutter valve, cyclone cylinder, airtight connection pipe, the spacing leading truck of level 4 side, overlap joint support, bearing support, division board
And the cylinder that steams out；Cyclone cylinder entrance is connected with leg outlet, and upper end air vent is connected by the rotation of airtight connection Guan Yuding, and lower end opens
Mouth is placed in settler bottom or is connected with kuppe；Cyclone cylinder entrance opposite housing is provided with overlap joint support, and it is connected with bearing support,
The bearing support other end is connected with settler inwall；The level 4 spacing leading truck of side is set between cyclone cylinder bottom and settler, limit
The orientation horizontal displacement of 4, cyclone cylinder bottom processed, and allow vertical sliding motion；Division board and the cylinder that steams out are arranged on settler bottom, soon
Dividing and dipleg lower end reaches below through division board, dipleg lower end is connected with flutter valve, and steaming out, a upper end is uncovered to be connected with division board
And connect, lower end is arranged on around flutter valve.
Further, the cylinder that steams out is that 1 sleeve is enclosed within around dipleg, flutter valve；Or 1 cylinder or rectangular cylinder or arc tube arrange
At dipleg, flutter valve radial outside, lower inside wall arranges venthole；Or straight tube and sector drum combinative structure, top is straight tube
Bottom is sector drum, and sector drum medial wall arranges venthole；Or some straight tubes is arranged in around dipleg, flutter valve radial outside,
Lower inside wall arranges venthole.
Further, kuppe is cylinder or underpants barrel structure, highly 1.5～6m, and barrel circumferentially arranges some strip transom windows；
Kuppe lower end is connected with bottom settler, and upper end is connected with a cyclone cylinder point bottom soon.
Innovative point of the present invention and good effect:
Innovative point of the present invention is: 1, use the cyclone cylinder of Negative Pressure Difference discharge to divide soon, and is connected with top rotation total enclosing, is greatly shortened
Oil gas is at the settler time of staying, reduction dry gas yied, raising product yield；Design steam isolation facility avoids settler coking,
Design steam blowing facility is avoided flutter valve coking, design overlap joint supporting, guiding facility to make cyclone cylinder set up separately soon and is executed stable, safety fortune
OK.2, purge gas is divided soon from end opening entrance cyclone cylinder together with stripping gas, or divides soon from end opening entrance cyclone cylinder after water conservancy diversion.
Good effect of the present invention is: 1, whole oil gas are through cyclone cylinder fast decilitre trachea to pushing up rotation, oil gas are greatly shortened at settler
The time of staying, reduction dry gas yied, raising product yield；2, steam isolation is set at settler and solves settler coking, if
Put the cylinder that steams out and avoid flutter valve coking；3, overlap joint supporting, guiding facility are set, make cyclone cylinder set up separately soon and execute stable, safe long period
Run.
Accompanying drawing explanation
Fig. 1 is the outer riser total enclosing anti-coking method of one and settler schematic diagram.
1-riser, 2-expansion appliance, 3-airtight connection pipe, 4-overlaps support, 5-bearing support, 6-cyclone cylinder, and 7-settles
Device, the anti-scorch steam loop of 8-, 9-pushes up rotation, 10-dipleg, the spacing leading truck of 11-level 4 side, and 12-steams out cylinder, 13-division board,
14-flutter valve, 15-stripping section.
Fig. 2 is the outer riser total enclosing anti-coking method of another kind and settler schematic diagram.
1-riser, 2-expansion appliance, 3-airtight connection pipe, 4-overlaps support, 5-bearing support, 6-cyclone cylinder, and 7-settles
Device, the anti-scorch steam loop of 8-, 9-pushes up rotation, 10-dipleg, the spacing leading truck of 11-level 4 side, and 12A-steams out sleeve, and 13-isolates
Plate, 14-flutter valve, 15-stripping section.
Fig. 3 is the outer riser total enclosing anti-coking method of another kind and settler schematic diagram.
1-riser, 2-expansion appliance, 3-airtight connection pipe, 4-overlaps support, 5-bearing support, 6-cyclone cylinder, and 7-settles
Device, the anti-scorch steam loop of 8-, 9-pushes up rotation, 10-dipleg, the spacing leading truck of 11-level 4 side, and 12A-steams out sleeve, and 13-isolates
Plate, 14-flutter valve, 15-stripping section, 16-kuppe.
Detailed description of the invention
Seeing Fig. 1～Fig. 3, arrange 1～2 cyclone cylinder 6 in settler 7, cyclone cylinder 6 entrance is connected with riser 1 outlet,
Cyclone cylinder 6 upper end is connected with top rotation 9 entrances through airtight connecting tube 3, expansion appliance 2.Cyclone cylinder 6 entrance opposite housing sets
Having overlap joint support 4, it is connected with bearing support 5, and bearing support 5 other end is connected with settler 7 inwall.In cyclone cylinder 6 bottom
And the level 4 spacing leading truck of side 11 is set between settler 7, limits the orientation horizontal displacement of 4, cyclone cylinder 6 bottom, and allow
Vertical sliding motion.Arrange division board 13 in settler 7 bottom, cyclone cylinder 6, dipleg 10 lower end reach below division board 13, material
Lower limb 10 lower end is connected with flutter valve 14；Fig. 1 arranges some cylinders 12 (identical with flutter valve quantity) that steams out, and the cylinder 12 that steams out is arranged on material
Lower limb 10, flutter valve 14 radial outside, its upper end is uncovered to be connected with division board and connects, and medial wall, its underpart (towards flutter valve) is provided with
Venthole；Fig. 2, Fig. 3 arrange some sleeve 12A that steams out, and the sleeve 12A that steams out is enclosed within around dipleg, flutter valve, and its upper end is uncovered
Being connected with division board and connect, medial wall, its underpart (towards flutter valve) is provided with venthole.Fig. 3 kuppe 16 lower end and settler 7
Bottom connects, and upper end is connected with cyclone cylinder 6 bottom, and kuppe 16 barrel circumferentially arranges some strip transom windows.
Seeing Fig. 1～Fig. 3, reaction oil gas flows out from riser 1 outlet with catalyst mixture, enters cyclone cylinder from entrance tangent
6, gas-solid mixture rotates in cyclone cylinder 6, under centrifugal action solid catalyst to cyclone cylinder 6 inwall concentrate,
Oil gas realizes reaction oil gas and catalyst sharp separation in center set, separates catalyst and falls along cyclone cylinder 6 inwall by gravity
Stripping section 9 to lower section.Oil gas is drawn from cyclone cylinder 6 top center air vent, introduces top rotation 9 through airtight connecting tube road 3 and enters
Discharge after one step gas solid separation.Feeding steam at anti-scorch steam loop 8, steam is full of settler 7 cross section and slowly flows downward,
The lower section that Fig. 1 is directed to division board 13 through steam out cylinder 12/ Fig. 2, Fig. 3 through the sleeve 12A that steams out carries out steam blowing to flutter valve；
It is internal that Fig. 1, Fig. 2 purge gas enters cyclone cylinder 6 from cyclone cylinder 6 end opening together with stripping gas, and Fig. 3 purge gas is from strip gas
Window enters and enters cyclone cylinder 6 inside through kuppe 16 from end opening together with stripping gas.Due to division board 13 obstruct stripping gas and
A small amount of oil gas that flutter valve 14 is discharged is limited in division board 13 underlying space, and above division board 13, only steam is without oil gas thus thoroughly
Avoid oil gas in settler 7 coking；Flutter valve 14 discharge a small amount of oil gas through the cylinder 12/ that steams out steam out sleeve 12A guide purging
Steam is taken away in time thus is avoided oil gas and gather coking around flutter valve 14.
Claims (5)
1. an outer riser total enclosing anti-coking method, discharges including reaction oil gas with catalyst sharp separation, catalyst, pushes up
Rotation the second-order separation, dipleg and flutter valve discharge catalyst, it is characterized in that: use the cyclone cylinder of Negative Pressure Difference discharge to divide soon, and revolve with top
Total enclosing connects, and oil gas is greatly shortened at the settler time of staying, reduction dry gas yied, raising product yield；Design steam
Isolation facility avoids settler coking, design steam blowing facility to avoid flutter valve coking, design overlap joint supporting, guiding facility to make rotation
Air duct sets up separately soon executes stable, safe operation.
Outer riser total enclosing anti-coking method the most according to claim 1, is characterized in that: purge gas is together with stripping gas
Enter cyclone cylinder from end opening to divide soon, or divide soon from end opening entrance cyclone cylinder after water conservancy diversion.
3. an outer riser total enclosing anti-coking settler, including settler, riser, stripping section, anti-scorch steam loop,
Top rotation, dipleg, flutter valve, cyclone cylinder, airtight connection pipe, the spacing leading truck of level 4 side, overlap joint support, bearing support, isolation
Plate and the cylinder that steams out；Cyclone cylinder entrance is connected with leg outlet, and upper end air vent is connected by the rotation of airtight connection Guan Yuding, lower end
Uncovered it be placed in settler bottom or be connected with kuppe；Cyclone cylinder entrance opposite housing is provided with overlap joint support, and it is connected with bearing support,
The bearing support other end is connected with settler inwall；The level 4 spacing leading truck of side is set between cyclone cylinder bottom and settler, limit
The orientation horizontal displacement of 4, cyclone cylinder bottom processed, and allow vertical sliding motion；Division board and the cylinder that steams out are arranged on settler bottom, soon
Dividing and dipleg lower end reaches below through division board, dipleg lower end is connected with flutter valve, and steaming out, a upper end is uncovered to be connected with division board
And connect, lower end is arranged on around flutter valve.
Outer riser total enclosing anti-coking settler the most according to claim 3, is characterized in that: the cylinder that steams out is 1 sleeve
It is enclosed within around dipleg, flutter valve；Or 1 cylinder or rectangular cylinder or arc tube are arranged in dipleg, flutter valve radial outside, in bottom
Sidewall arranges venthole；Or straight tube and sector drum combinative structure, top be straight tube bottom be sector drum, sector drum medial wall sets
Put venthole；Or some straight tubes is arranged in around dipleg, flutter valve radial outside, lower inside wall arranges venthole.
Outer riser total enclosing anti-coking settler the most according to claim 3, is characterized in that: kuppe is cylinder or trousers
Vent in the sides of a garment barrel structure, highly 1.5～6m, barrel circumferentially arranges some strip transom windows；Kuppe lower end is connected with bottom settler,
Upper end is connected with a cyclone cylinder point bottom soon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221764.8A CN106179136A (en) | 2015-05-04 | 2015-05-04 | A kind of outer riser total enclosing anti-coking method and settler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221764.8A CN106179136A (en) | 2015-05-04 | 2015-05-04 | A kind of outer riser total enclosing anti-coking method and settler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106179136A true CN106179136A (en) | 2016-12-07 |
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ID=57458747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221764.8A Pending CN106179136A (en) | 2015-05-04 | 2015-05-04 | A kind of outer riser total enclosing anti-coking method and settler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106179136A (en) |
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2015
- 2015-05-04 CN CN201510221764.8A patent/CN106179136A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |
|
| WD01 | Invention patent application deemed withdrawn after publication |