CN208878082U - A kind of double collection chamber anti-coking settlers - Google Patents
A kind of double collection chamber anti-coking settlers Download PDFInfo
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- CN208878082U CN208878082U CN201820772401.2U CN201820772401U CN208878082U CN 208878082 U CN208878082 U CN 208878082U CN 201820772401 U CN201820772401 U CN 201820772401U CN 208878082 U CN208878082 U CN 208878082U
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Abstract
The utility model discloses a kind of double collection chamber anti-coking settlers, including settler shell, riser, thick rotation, single-stage cyclone separator, first collection chamber, second collection chamber and balance pipe, balance pipe is connected to anti-coking settler lower space and the first collection chamber, thick rotation includes thick rotation ontology, thick rotation riser, thick spin material leg and compensator, single-stage cyclone separator includes single-stage ontology, riser, single-stage dipleg and dipleg sealed bottom structure, the thick rotation ontology of leg outlet connection, thick rotation ontology accesses the first collection chamber via thick rotation riser, single-stage cyclone separator is arranged in around the first collection chamber, single-stage ontology is connected with the first collection chamber, single-stage ontology accesses the second collection chamber via riser.Leg outlet oil gas and catalyst quick separating can be realized using the utility model, effectively avoids settler coking, eliminate start-up process and operation fluctuation bring runs agent risk.
Description
Technical field
The utility model belongs to catalytic cracking unit leg outlet gas solid separation technical field, in particular to a kind of double collection
Gas chamber anti-coking settler.
Background technique
Catalytic cracking unit (FCCU) is secondary operation device important in petroleum refining industry, with fcc raw material heaviness,
Puzzlement of the catalytic unit by settler coking problem.Coke button in settler once falls off, and most probably blocking catalyst recycles
Route causes catalyst circulation unsmooth or even interrupts, and device is forced unplanned shutdown, causes huge economic loss.Settler
Coking problem has become one of the important hidden danger for influencing the operation of catalytic unit long period safety and steady.
Wet, the heavy constituent of settler coking having its source in reaction oil gas.Wet, heavy constituent condensation in oil gas generate
Drop attaches to catalyst granules, deposits on wall or inner member, and thickness is continuously increased, the reaction such as experience dehydrogenation, condensation, most
Whole coking.From Coking Mechanism it is found that feedstock oil atomization, oil gas flow condition, temperature, oil gas residence time have important shadow to coking
It rings, therefore settler anti-coking, cracking reaction should be crossed from reduction oil gas is secondary, realize oil gas, catalyst quick separating, improve oil
Gas circuit diameter wall temperature reduces heat loss, reduces all various aspects such as oil gas residence time and sets about.
Application No. is 201310288778.2 Chinese patents to disclose a kind of anti-coking rotation of multistage hoisting pipe reactor
Wind separator.The anti-coking cyclone separator includes at least: thick cyclone separator, oil gas set cylinder, top cyclone separator,
Oil gas concetrated pipe, flow straightening grid.By anti-coking cyclone separator, multistage hoisting pipe reactor can be exported oil gas and sedimentation
Oil gas carries out gas-solid quick separating with catalyst and quickly exports gas in settler in device, and that reduces reaction oil gas crosses cracking
Reaction, further increases the effect that oil gas is separated with catalyst, but the technology has the following problems: 1. vortex quick separations generally revolve
Arm configuration is flowed, angular speed is lower, and especially for enlarged device, separative efficiency is not high；2. using vortex quick separation, Yi Yin
The variation of bill grade cyclone separator catalyst inlet concentration, causes seal bootr external and internal pressure to generate " cell breath ", if cannot be timely
The effect is eliminated, it is unsmooth to may cause single-stage cyclone separator dipleg discharge, and Yi Fasheng catalyst runs agent accident；3. the structure is answered
With with limitation, it is suitable for interior riser structure, is not suitable for outer riser structure.
Application No. is 201010263125.5 Chinese patents, disclose a kind of oil for inhibiting the coking of heavy-oil catalytic settler
Gas quickly draws device and method, and equipment includes thick cyclone separator (2) in settler, top cyclone separator (8), oil gas
The stripping section (10) of drainage tube (5) and settler lower part；Oil gas drainage tube (5) lower ending opening is higher than thick cyclonic separation
Dipleg (2) discharge gate of device (2), while also above dipleg (9) discharge gate on top cyclone separator (8), difference in height is greater than thick
The bullet of the catalyst of cyclone dip-leg (2) discharge splashes height, which can make oil gas and catalyst quick separating, but simultaneously
Rotation sub-material leg outlet oil gas and the oil gas being stripped off contact settler wall cannot be blocked, coking trend is eased, but cannot
It eradicates.
Application No. is the Chinese patents of CN201420053946.X, disclose a kind of anti-coking settler comprising are promoted
Manage (1), thick rotation (4), thick spin material leg (5), rotation riser (6), top rotation (8), top spin material leg (9), top rotation riser (10) and
Collection chamber (11), the riser (1) connect with the thick rotation (4), and the thick rotation (4) connect with the thick spin material leg (5), institute
It states top rotation (8) to connect with the top spin material leg (9), top rotation riser (10) connects the collection chamber (11)；The thick rotation
(4) thick rotation riser (6) of connection, thick rotation riser (6) are accessed by the side wall of the oil gas concetrated pipe (7), the top rotation
(8) entrance is connect with oil gas concetrated pipe (7), is formed riser (1), thick rotation (4), is slightly revolved riser (6), oil gas concetrated pipe (7)
With the closed direct connection structure of top rotation (8).But the technology has the disadvantage in that 1. thick spin material legs are under positive pressure and operates, about
15%~30% oil gas enters partition down space, and there are coking risks for partition down space, once coke button, which falls off, causes circular route
Road blocking, device make shutdown process；2. thick rotation and single-stage direct connection sealing structure, lose the buffer function of settler, anti-interference
Ability is low, goes into operation stage or operation when fluctuating, race agent accident easily occurs.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art and deficiencies, and it is heavy to provide a kind of double collection chamber anti-cokings
Device is dropped, leg outlet oil gas and catalyst quick separating is realized, effectively avoids settler coking, have big operating flexibility, disappear
Except start-up process and operation fluctuation bring run agent risk.
A kind of double collection chamber anti-coking settlers provided by the utility model, including settler shell, riser, thick rotation and
Single-stage cyclone separator, it is characterised in that: double collection chamber anti-coking settlers further include the first collection chamber, the second collection chamber and balance
Pipe, balance pipe setting are connected to anti-coking settler lower space and the first gas collection in the first collection chamber side wall or lower section, balance pipe
Room, thick rotation include thick rotation ontology, slightly revolve riser, thick spin material leg and compensator, and single-stage cyclone separator includes single-stage ontology, rises gas
Pipe, single-stage dipleg and dipleg sealed bottom structure, the thick rotation ontology of leg outlet connection, the thick ontology that revolves connect via thick rotation riser
Enter the first collection chamber, single-stage cyclone separator is arranged in around the first collection chamber, and single-stage ontology is connected with the first collection chamber, single-stage sheet
Body accesses the second collection chamber via riser.
The utility model is further technically characterized in that double collection chamber anti-coking settlers further include partition, partition
It is arranged in anti-coking settler lower part, single-stage dipleg is located at partition lower space.It is preferred that the lower port of thick spin material leg also be located at every
Plate lower space.
The utility model is further technically characterized in that double collection chamber anti-coking settlers further include anti-oil gas evolution
Facility, anti-oil gas evolution facility setting are exported in thick spin material leg.
The utility model is further technically characterized in that the thick rotation riser and the first collection chamber access port are located at first
Collection chamber side wall middle and lower part, the single-stage ontology of single-stage cyclone separator and the communication port of the first collection chamber are located in the first collection chamber side wall
Top；First collection chamber is arranged in settler shell, and the second collection chamber can be disposed in settler shell, can also be arranged
In outside settler shell.
The utility model is further technically characterized in that the anti-oil gas evolution facility can be the sealing being separately provided
Bucket is also possible to interconnected annular groove, or thick spin material leg is inserted directly into the structure of stripping section material position.
The utility model is further technically characterized in that the partition can use plane, concave surface, convex surface or other types
Formula.
The utility model is further technically characterized in that the shape of the balance pipe for round or other shapes；The list
The dipleg sealed bottom structure of grade cyclone separator can be flutter valve, weighted valve or other sealing structures.
The utility model is further technically characterized in that the riser can be single riser or double lifting leg, can be with
It is arranged in settler shell, also can be set outside settler shell.
The utility model is further technically characterized in that the settler upper space setting filling steam ring, and filling is steamed
On vapour ring aperture or using notch arrangement or use nozzle arrangements.
The utility model is especially suitable for enlarged device and large device.
The simple working method of the utility model is:
The a large amount of catalyst of oil gas carrying enters thick rotation from leg outlet, thick to revolve oil gas and catalyst quick separating,
Most catalyst is discharged from thick spin material leg, and oil gas carries a small amount of catalyst and enters the first gas collection through thick rotation riser
Room, enters single-stage cyclone separator after the first collection chamber buffering, and catalyst and oil gas are carried out secondary separation, oil gas by single-stage cyclone separator
Into the second collection chamber, and catalyst enters stripping section through single-stage dipleg.It is slightly spun under positive pressure and operates, part oil gas follows
Catalyst enters partition down space by thick spin material leg, and the purpose that anti-oil gas evolution facility is arranged is that the part oil gas is greatly decreased
Amount；The catalyst that thick spin material leg and single-stage dipleg are drawn off enters stripping section, in stripping section and stripped vapor counter current contacting, will be catalyzed
Oil gas between agent particle is stripped off, and then enters the first collection chamber and air-fuel mixture by balance pipe.The sedimentation of partition top
Device space maintains micro-positive pressure by filling steam ring injection superheated steam.
The utility model has the beneficial effect that compared with prior art
1. the first collection chamber of the utility model is arranged in settler shell, Wall Temperature is high, and oil-gas component is not easy to stick
Wall is invested, is not easy to coking inside the first collection chamber.
2. the first collection chamber of the utility model plays the role of buffering oil gas, mean allocation oil gas enters single-stage cyclone separator,
Thick rotation, the single-stage cyclone separator disadvantage that cyclone separator quantity is fixed in connection structure in the form of 1 pair 1 or 1 pair 2 are avoided, especially
For enlarged device and super-huge device, single-stage cyclone separator quantity is adjustable, eliminates because of cyclone separator single devices size
The excessive unfavorable factor for bringing efficiency to reduce.
3. after partition is arranged in anti-coking settler lower part in the utility model, steam is empty full of settler more than partition
Between, completely eliminate the risk of coking；After anti-oil gas evolution facility is arranged in the utility model, anti-oil gas evolution facility is to thick rotation material
Leg bottom is sealed, and inhibits the air leakage amount of thick spin material leg, substantially eliminates the coking risk under partition.
With the drawings and specific embodiments, the utility model is described in further detail below, but is not intended to limit to this
The use scope of utility model.
Detailed description of the invention
Fig. 1 is a kind of double collection chamber anti-coking settler structural schematic diagrams of the utility model.
Fig. 2 is second pair of collection chamber anti-coking settler structural schematic diagram of the utility model.
Fig. 3 is the third double collection chamber anti-coking settler structural schematic diagram of the utility model.
Fig. 4 is the 4th kind of the utility model double collection chamber anti-coking settler structural schematic diagrams.
Fig. 5 is the 5th kind of the utility model double collection chamber anti-coking settler structural schematic diagrams.
Fig. 6 is the 6th kind of the utility model double collection chamber anti-coking settler structural schematic diagrams.
Same reference numerals indicate identical technical characteristic in Fig. 1~6.
Wherein, in Fig. 1~6: 1, settler shell；2, the first collection chamber；3, the second collection chamber；
4, riser；5, ontology is slightly revolved；5-1, compensator；5-2, riser is slightly revolved；
5-3, thick spin material leg；6, single-stage ontology；6-1, single-stage riser；
6-2, single-stage dipleg；7, anti-oil gas escapes facility；8, partition；
9, balance pipe；10, stripping section；11, steam ring is filled.
Specific embodiment
Referring to Fig. 1, a kind of double collection chamber anti-coking settlers of the utility model, wherein riser 4,2 and of the first collection chamber
Second collection chamber 3 is arranged in settler shell 1, and for single riser, partition 8 is plane clapboard.Double collection chamber anti-cokings
Settler includes settler shell 1, riser 4, thick rotation, single-stage cyclone separator, the first collection chamber 2, the second collection chamber 3, balance pipe 9
With partition 8, the setting of balance pipe 9 is arranged in 2 side wall of the first collection chamber or lower section, partition 8 in anti-coking settler lower part, balance pipe
9 connection 8 lower spaces of partition and the first collection chamber 2, thick rotation include thick rotation ontology 5, thick rotation riser 5-2, thick spin material leg 5-3 and
Compensator 5-1, single-stage cyclone separator include single-stage ontology 6, riser 6-1, single-stage dipleg 6-2 and dipleg sealed bottom structure, are mentioned
Connection thick rotation ontology 5 in the outlet of riser 4 slightly revolves ontology 5 via thick rotation riser 5-2 and accesses the first collection chamber 2, single-stage cyclone separator
It is arranged in around the first collection chamber 2, single-stage ontology 6 is connected with the first collection chamber 2, under thick spin material leg 5-3, single-stage dipleg 6-2
Port is respectively positioned on 8 lower space of partition, and single-stage ontology 6 accesses the second collection chamber 3, thick rotation, single-stage cyclone separator via riser 6-1
With the first collection chamber 2, the second collection chamber 3 and 1 group of settler shell collection chamber direct connection coking-proof structure settler in pairs.
Double collection chamber anti-coking settlers are preferably provided with anti-oil gas evolution facility 7, and anti-oil gas evolution facility 7 is arranged
It is exported in thick spin material leg 5-3.
The dipleg sealed bottom structure of the single-stage cyclone separator can be flutter valve, weighted valve or other sealing structures.
The thick rotation riser 5-2 and 2 access port of the first collection chamber are located at 2 side wall middle and lower part of the first collection chamber, single-stage rotation
The communication port of the single-stage ontology 6 and the first collection chamber 2 that divide device is located at 2 side wall middle and upper part of the first collection chamber.
The anti-oil gas evolution facility 7 can be the seal funnel being separately provided, and be also possible to interconnected annular groove, or
Person is the structure that thick spin material leg 5-3 is inserted directly into stripping section material position.
The shape of the partition 8 can use plane, concave surface, convex surface or other patterns.
The balance pipe 9 is round tube or other shapes pipe.
First collection chamber 2 is arranged in settler shell 1, and the second collection chamber 3 can be disposed in settler shell 1,
Also it can be disposed at outside settler shell 1.
The riser 4 can be single riser or double lifting leg, can be set in settler shell 1, can also set
It sets outside settler shell 1.
The settler upper space setting filling steam ring 11 fills aperture on steam ring 11 or uses notch arrangement
Or use nozzle arrangements.
Fig. 2 be second pair of collection chamber anti-coking settler structural schematic diagram of the utility model, the difference with Fig. 1 be every
Plate 8 is convex surface.
Fig. 3 is the third double collection chamber anti-coking settler structural schematic diagram of the utility model, and the difference with Fig. 1 is to mention
Riser 4 is arranged in outside settler shell 1.
Fig. 4 is the double collection chamber anti-coking settler structural schematic diagrams of the 4th kind of the utility model, and the difference with Fig. 1 is the
Two collection chambers 3 are arranged in outside settler shell 1.
Fig. 5 is the 5th kind of the utility model double collection chamber anti-coking settler structural schematic diagrams, and the difference with Fig. 1 is to mention
Riser 4 and the second collection chamber 3 are arranged in outside settler shell 1.
Fig. 6 is the 6th kind of the utility model double collection chamber anti-coking settler structural schematic diagrams, and the difference with Fig. 1 is to mention
Riser 4 is double lifting leg, is arranged in outside settler shell 1.
The utility model single-stage cyclone separator is distributed in 2 side of the first collection chamber and is connected with the first collection chamber 2, single-stage rotation
Device is divided to be connected via riser 6-1 with the second collection chamber 3.
The utility model balance pipe 9 is drawn from 2 bottom of the first collection chamber, and lower end is located at 8 or less partition.
The utility model settler upper space setting filling steam ring 11, filling steam ring 11 use open-celled structure, behaviour
High temperature super heated steam can be used by making medium.
Compensator 5-1 is arranged in the thick rotation riser 5-2, and the effect of compensator 5-1 is absorbing thermal expansion, can be expansion
Section or socket joint sealing structure.Thick spin material leg material position seal funnel, bottom setting fluidisation ring is arranged in the thick lower part spin material leg 5-3；Single-stage
Flutter valve is arranged in dipleg 6-2 lower port.
The support scheme of the partition 8 can with but be not limited to such as under type:
Scheme one, partition 8 and thick spin material leg 5-3 or riser 4 carry out part or full circumference welding and so as to supporting,
With single-stage dipleg 6-2, settler shell 1, there are gaps for balance pipe 9；
Scheme two, partition 8 and settler shell 1 carry out part or full circumference welding and so as to supports, with thick spin material leg 5-
3, riser 4, single-stage dipleg 6-2, there are gaps for balance pipe 9；
Scheme three, partition 8 and single-stage dipleg 6-2 carry out part or full circumference welding and so as to supports, with thick spin material leg 5-
3, riser 4, balance pipe 9, there are gaps for settler shell 1.
The simple working method of the utility model is:
Oil gas, which carries a large amount of catalyst and exports from riser 4, enters thick rotation, thick to revolve oil gas and catalyst quick separating,
Most catalyst is excluded from thick spin material leg 5-3, and oil gas carries a small amount of catalyst and enters first through thick rotation riser 5-1
Collection chamber 2, enters single-stage cyclone separator after the first collection chamber 2 buffering, and catalyst and oil gas are carried out secondary point by single-stage cyclone separator
From oil gas enters the second collection chamber 3, and catalyst enters stripping section 10 through single-stage dipleg 6-2.It is slightly spun under positive pressure and grasps
Make, part oil gas follows catalyst to enter 8 down space of partition by thick spin material leg 5-3, the mesh of thick spin material leg material position seal funnel is arranged
Be that the part oil and gas content is greatly decreased；The catalyst that thick spin material leg 5-3 and single-stage dipleg 6-2 is drawn off enters stripping section 10,
Stripping section 10 and stripped vapor counter current contacting, the oil gas between catalyst granules is stripped off, and is then entered by balance pipe 9
First collection chamber 2 and air-fuel mixture.It is micro- just to inject superheated steam maintenance by filling steam ring 11 for 8 top settler space of partition
Pressure.
The utility model proposes double collection chamber anti-coking settlers be not limited to attached drawing 1-6.
Claims (10)
1. a kind of double collection chamber anti-coking settlers, including settler shell (1), riser (4), thick rotation, single-stage cyclone separator and
Stripping section (10), it is characterised in that: double collection chamber anti-coking settlers further include the first collection chamber (2), the second collection chamber (3)
With balance pipe (9), balance pipe (9) setting is connected to anti-coking settler in the first collection chamber (2) side wall or lower section, balance pipe (9)
Lower space and the first collection chamber (2), thick rotation include thick rotation ontology (5), slightly revolve riser (5-2), thick spin material leg (5-3) and mend
It repays device (5-1), single-stage cyclone separator includes single-stage ontology (6), riser (6-1), single-stage dipleg (6-2) and dipleg sealed bottom knot
Structure, thick rotation ontology (5) of riser (4) outlet connection slightly revolve ontology (5) via thick rotation riser (5-2) and access the first collection chamber
(2), single-stage cyclone separator is arranged in around the first collection chamber (2), and single-stage ontology (6) is connected with the first collection chamber (2), single-stage sheet
Body (6) accesses the second collection chamber (3) via riser (6-1).
2. a kind of double collection chamber anti-coking settlers according to claim 1, it is characterised in that: double collection chamber anti-cakings
Burnt settler further includes partition (8), and partition (8) setting is connected to below partition (8) in anti-coking settler lower part, balance pipe (9)
Space and the first collection chamber (2), single-stage dipleg (6-2) lower port are located at partition (8) lower space.
3. a kind of double collection chamber anti-coking settlers according to claim 2, it is characterised in that: the thick spin material leg (5-
3) lower port is located at partition (8) lower space.
4. a kind of double collection chamber anti-coking settlers according to claim 1 or 2, it is characterised in that: double collection chambers
Anti-coking settler further includes anti-oil gas evolution facility (7), and anti-oil gas evolution facility (7) setting is exported at thick spin material leg (5-3).
5. a kind of double collection chamber anti-coking settlers according to claim 1, it is characterised in that: the thick rotation riser
(5-2) and the first collection chamber (2) access port are located at the first collection chamber (2) side wall middle and lower part, the single-stage ontology (6) of single-stage cyclone separator
It is located at the first collection chamber (2) side wall middle and upper part with the communication port of the first collection chamber (2)；It is heavy that first collection chamber (2) is arranged in
Device shell (1) inside drops, and it is internal or external that the second collection chamber (3) is arranged in settler shell (1).
6. a kind of double collection chamber anti-coking settlers according to claim 4, it is characterised in that: the anti-oil gas evolution is set
Applying (7) is the seal funnel being separately provided, or interconnected annular groove, or thick spin material leg (5-3) is inserted directly into stripping section
(10) structure of material position.
7. a kind of double collection chamber anti-coking settlers according to claim 2, it is characterised in that: the partition (8) uses
Plane, concave surface or convex surface pattern.
8. a kind of double collection chamber anti-coking settlers according to claim 1, it is characterised in that: the balance pipe (9)
Shape is circle；The dipleg sealed bottom structure is flutter valve or weighted valve seal structure.
9. a kind of double collection chamber anti-coking settlers according to claim 1, it is characterised in that: the riser (4) is
Single riser or double lifting leg, setting are internal or external in settler shell (1).
10. a kind of double collection chamber anti-coking settlers according to claim 1 or 2, it is characterised in that: the settler shell
Body (1) upper space setting filling steam ring (11) fills aperture on steam ring (11) or uses notch arrangement or use
Nozzle arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820772401.2U CN208878082U (en) | 2018-05-23 | 2018-05-23 | A kind of double collection chamber anti-coking settlers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820772401.2U CN208878082U (en) | 2018-05-23 | 2018-05-23 | A kind of double collection chamber anti-coking settlers |
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| CN208878082U true CN208878082U (en) | 2019-05-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676050A (en) * | 2020-06-18 | 2020-09-18 | 青岛京润石化设计研究院有限公司 | Sedimentation steam stripping method |
| CN115305114A (en) * | 2021-05-07 | 2022-11-08 | 中国石油化工股份有限公司 | Double-riser or multi-riser settler |
-
2018
- 2018-05-23 CN CN201820772401.2U patent/CN208878082U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676050A (en) * | 2020-06-18 | 2020-09-18 | 青岛京润石化设计研究院有限公司 | Sedimentation steam stripping method |
| CN111676050B (en) * | 2020-06-18 | 2022-04-12 | 青岛京润石化设计研究院有限公司 | Sedimentation steam stripping method |
| CN115305114A (en) * | 2021-05-07 | 2022-11-08 | 中国石油化工股份有限公司 | Double-riser or multi-riser settler |
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