CN207357120U - A kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with - Google Patents
A kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with Download PDFInfo
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- CN207357120U CN207357120U CN201721381782.3U CN201721381782U CN207357120U CN 207357120 U CN207357120 U CN 207357120U CN 201721381782 U CN201721381782 U CN 201721381782U CN 207357120 U CN207357120 U CN 207357120U
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Abstract
The utility model provides a kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with, and belongs to technical field of petrochemical industry.It solves the problems, such as that existing propylene since coke exists causes yield and poor quality in preparing.This is prepared the freshening device of propylene by weight virtue after being hydrogenated with, including riser structure and fractionating column, riser structure includes the pre lift zone set gradually from lower to upper, soaking section, stripping section and segregation section, the top of segregation section is provided with the first connecting tube, attributional analysis instrument is provided with first connecting tube, first connecting tube is connected with qualified oil product flowline and slop oil oil return pipe by three-way connection, qualified oil product flowline is connected with the top of fractionating column, the lower part of fractionating column is connected by the second connecting tube with stripping section, slop oil oil return pipe is connected on feed nozzle.It can be detected and screened to the content of propylene by attributional analysis instrument, so as to ensure obtained propylene quality.
Description
Technical field
The utility model belongs to technical field of petrochemical industry, is related to a kind of oil product preparation facilities, it is particularly a kind of by
Weight virtue prepares the freshening device of propylene after hydrogenation.
Background technology
Riser is in fluidized catalytic cracker, will be urged by the lifting force of gas medium air, steam or oil gas
Agent is promoted to the pipe used in eminence, it is from bottom to top followed successively by pre lift zone, feed zone and cracking reaction area, and outlet is general
It is provided with fast separation device.Oil gas still has one section of residence time in settler and oil gas transfer line, from leg outlet
It is about 10-20s to fractionating column, and temperature is also generally 450-510 DEG C higher.Considerable degree of two are also had on this condition
Secondary response occurs, and mainly heat cracking reaction, causes residual air and coke yield to increase, particularly to heavy oil catalytic cracking
When, this phenomenon is even more serious, even forms coke button on the wall of settler, oil-gas pipeline and Fractionator Bottom sometimes.Not only make
Tube wall becomes dirty, and can not be recycled, but existing technology is difficult to overcome the above problem, and in existing freshening device
Quality control for oil product is not easy.
The content of the invention
The purpose of this utility model is that there are the above problem for existing technology, it is proposed that a kind of by weight virtue system after being hydrogenated with
The freshening device of standby propylene, the technical problem to be solved is that the freshening device for how ensureing to be prepared propylene by full fraction weight virtue for it
Prepare the oil quality of propylene.
The purpose of this utility model can be realized by following technical proposal：It is a kind of that returning for propylene is prepared by weight virtue after being hydrogenated with
Refine device, including riser structure and fractionating column, it is characterised in that the riser structure includes what is set gradually from lower to upper
Pre lift zone, soaking section, stripping section and segregation section, the bottom of the pre lift zone is provided with pre- hot gas inlet, described pre-
Raising section and the junction of the soaking section are provided with feed nozzle, and the top of the segregation section is provided with the first connection
Manage, be provided with attributional analysis instrument in first connecting tube, first connecting tube is connected with qualified oil product by three-way connection
Flowline and slop oil oil return pipe, the qualification oil product flowline are connected with the top of fractionating column, the fractionating column
Lower part is connected by the second connecting tube with stripping section, and the slop oil oil return pipe is connected on feed nozzle.
This freshening device carries out fractionation processing by fractionating column to preparing propylene by weight virtue after being hydrogenated with；It is existing at the same time
Attributional analysis instrument is set on riser, the content of propylene can be detected, be fractionated when oil quality meets standard
Processing, when oil quality does not meet fractionation requirements, carries out reflux by the propylene of generation and handles again, so as to ensure to make
The propylene quality obtained.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, is provided with out on the qualification oil product flowline
Fuel tap, oil return valve is provided with the slop oil oil return pipe, and the riser structure is further included for controlling out
The controller of the on off state of fuel tap and oil return valve, the controller are electrically connected with attributional analysis instrument.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, the top of the fractionating column is provided with flue gas row
Outlet.Flue gas discharge opening is used to discharge flue gas and carry out desulphurization denitration processing, avoids causing environment undesirable influence.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, high pressure punching is inserted with the soaking section
Pipe is washed, and syringe pipe is provided with soaking section, the syringe pipe is connected with high pressure washing pipe, and the soaking section leads to
Cross freshening recovery tube and be connected with coke recycling can.Syringe pipe preferably can carry out the coke formed in soaking section pipeline
Cleaning, and wash away and be collected into coke recycling can.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, the syringe pipe be boundling nozzle, and flushing
The outlet-inclined impeller vane of head towards the inner tubal wall of soaking section, the angle of the syringe pipe and soaking section tube wall is 30 °~
75°.Boundling nozzle punching press is big, and it is more preferable to tilt the effect washed away.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, second connecting tube is from fractionating column to air lift
Section tilts upward setting.The connecting portion of second connecting tube and stripping section is in the top of boundling nozzle, and the second connecting tube is in gas
The opening for putting forward section tilts direction, and flush liquid can be avoided to be entered by the second connecting tube in fractionating column.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, the bottom of the coke recycling can is provided with out
Liquid mouth.Liquid outlet is used to discharge unnecessary liquid.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, the intracavity bottom of the coke recycling can is set
There is molecular sieve.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, the bottom of the soaking section is provided with only
Valve is flowed, and flow-stop valve is located at below the connecting portion of freshening recovery tube and soaking section.Flow-stop valve avoids flush liquid from entering
Pre lift zone.
The freshening device of propylene is prepared by weight virtue after being hydrogenated with above-mentioned, piston flow lifting is provided with the stripping section
Manage, be provided with cyclone separator in the segregation section, the cyclone separator is connected with piston flow riser, the pre-lift
Regenerated catalyst inlet is provided with the bottom sidewall of section.Excellent catalytic effect, and life is advantageously reduced using regenerated catalyst
Produce cost.
Compared with prior art, this freshening device has the following advantages：
1st, this freshening device sets attributional analysis instrument on existing riser, and the content of propylene can be detected,
Fractionation processing is carried out when oil quality meets standard, when oil quality does not meet fractionation requirements, the propylene of generation is carried out
Flow back and handle again, so as to ensure obtained propylene quality；
2nd, this freshening device as fractionating column prepared by weight virtue after hydrogenation obtained by propylene carry out fractionation processing, and to flue gas into
The processing of row desulphurization denitration, environmental pollution are small；It increases flushing and the retracting device of STRENGTH ON COKE on existing riser at the same time,
The coke that can be will be attached on tube wall is recycled, and whole device design is reasonable, easy to use, solves existing carry
Riser is due to the residual air caused by heat cracking reaction and excessive coke yield the problem of.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure, 1, pre lift zone；2nd, soaking section；3rd, stripping section；4th, segregation section；5th, pre- hot gas inlet；6th, first connects
Adapter；7th, coke recycling can；8th, freshening recovery tube；9th, high pressure washing pipe；10th, syringe pipe；11st, liquid outlet；12nd, molecular sieve；13、
Flow-stop valve；14th, piston flow riser；15th, cyclone separator；16th, feed nozzle；17th, regenerated catalyst inlet；18th, fractionating column；
19th, the second connecting tube；20th, flue gas discharge opening；21st, attributional analysis instrument；22nd, three-way connection；23rd, qualified oil product flowline；24th, no
Qualified oil product oil return pipe；25th, delivery valve；26th, oil return valve.
Embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
With reference to Fig. 1, the present embodiment is a kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with, riser structure and fractionation
Tower 18, riser structure include controller and the pre lift zone 1, soaking section 2, the stripping section 3 that set gradually from lower to upper
With segregation section 4, the bottom of pre lift zone 1 is provided with pre- hot gas inlet 5, and being provided with regeneration in the bottom sidewall of pre lift zone 1 urges
Agent entrance 17, pre lift zone 1 and the junction of soaking section 2 are provided with feed nozzle 16, and soaking section 2 passes through freshening
Recovery tube 8 is connected with coke recycling can 7, and piston flow riser 14 is provided with stripping section 3, and whirlwind point is provided with segregation section 4
From device 15, cyclone separator 15 is connected with piston flow riser 14.The top of segregation section 4 is provided with the first connecting tube 6, and first
Attributional analysis instrument 21 is provided with connecting tube 6, the first connecting tube 6 is connected with qualified 23 He of oil product flowline by three-way connection 22
Slop oil oil return pipe 24, qualified oil product flowline 23 are connected with the top of fractionating column 18, and qualified oil product flowline 23
On be provided with delivery valve 25, the lower part of fractionating column 18 is connected by the second connecting tube 19 with stripping section 3, slop oil oil return
Pipe 24 is connected on feed nozzle 16, and oil return valve 26 is provided with slop oil oil return pipe 24,25 He of delivery valve
Oil return valve 26 is electrically connected with controller, and controller is electrically connected with attributional analysis instrument 21, and controller passes through attributional analysis instrument
The oil qualities of 21 pairs of preparations are detected comparative analysis, and qualified oil product is transported to point by qualified oil product flowline 23
Evaporate in tower 18, underproof oil product is flowed back to carry out second lift by slop oil oil return pipe 24.
High pressure washing pipe 9 is inserted with soaking section 2, and syringe pipe 10 is provided with soaking section 2, syringe pipe 10
It is connected with high pressure washing pipe 9, syringe pipe 10 is boundling nozzle, and the outlet-inclined impeller vane of syringe pipe 10 is towards soaking section 2
Inner tubal wall, and syringe pipe 10 and the angle of 2 tube wall of soaking section are 30 °~75 °, above-mentioned angle can better ensure that flushing
Effect.The bottom of coke recycling can 7 is provided with liquid outlet 11, and the intracavity bottom of coke recycling can 7 is provided with molecular sieve 12,
Molecular sieve 12 can be filtered coke, and flushing liquid is discharged by liquid outlet 11.For connecting fractionating column 18 and air lift
Second connecting tube 19 of section 3 tilts upward setting from fractionating column 18 to stripping section 3, flushing liquid can be avoided to be strayed into fractionating column
In 18.
The top of fractionating column 18 is provided with flue gas discharge opening 20, and flue gas discharge opening 20 is located at the lower section of the first connecting tube 6, it
For discharging flue gas and carrying out desulphurization denitration processing, avoid causing environment undesirable influence.
The bottom of soaking section 2 is provided with flow-stop valve 13, and flow-stop valve 13 is located at freshening recovery tube 8 and soaking section
Below 2 connecting portion, flow-stop valve 13 can avoid flushing liquid from flowing downwardly to pre lift zone 1.The flushing used in the present embodiment
Liquid is liquefied heavy aromatics, avoids producing unnecessary impurity due to rinsing.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with, including riser structure and fractionating column (18), its feature exist
The pre lift zone (1) that includes setting gradually from lower to upper in, the riser structure, soaking section (2), stripping section (3) and
Segregation section (4), the bottom of the pre lift zone (1) are provided with pre- hot gas inlet (5), the pre lift zone (1) and the cracking
The junction of conversion zone (2) is provided with feed nozzle (16), and the top of the segregation section (4) is provided with the first connecting tube (6), institute
State and attributional analysis instrument (21) is provided with the first connecting tube (6), first connecting tube (6) is connected with by three-way connection (22)
Qualified oil product flowline (23) and slop oil oil return pipe (24), the qualification oil product flowline (23) and fractionating column (18)
Top is connected, and the lower part of the fractionating column (18) is connected by the second connecting tube (19) with stripping section (3), described unqualified
Oil product oil return pipe (24) is connected on feed nozzle (16).
2. the freshening device according to claim 1 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the corrected oil
Delivery valve (25) is provided with product flowline (23), oil return valve is provided with the slop oil oil return pipe (24)
(26), the riser structure further includes the controller for controlling the on off state of delivery valve (25) and oil return valve (26), institute
Controller is stated to be electrically connected with attributional analysis instrument (21).
3. the freshening device according to claim 1 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the fractionating column
(18) top is provided with flue gas discharge opening (20).
4. the freshening device according to claim 1 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the cracking is anti-
Answer and high pressure washing pipe (9) is inserted with section (2), and syringe pipe (10), the syringe pipe (10) are provided with soaking section (2)
It is connected with high pressure washing pipe (9), the soaking section (2) is connected with coke recycling can (7) by freshening recovery tube (8).
5. the freshening device according to claim 4 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the syringe pipe
(10) it is boundling nozzle, and the outlet of syringe pipe (10) tilts down and towards the inner tubal wall of soaking section (2), syringe pipe
(10) angle with soaking section (2) tube wall is 30 °~75 °.
6. the freshening device according to claim 5 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that described second connects
Adapter (19) tilts upward setting from fractionating column (18) to stripping section (3).
7. the freshening device that propylene is prepared by weight virtue after being hydrogenated with according to claim 4 or 5 or 6, it is characterised in that described
The bottom of coke recycling can (7) is provided with liquid outlet (11).
8. the freshening device according to claim 7 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the coke returns
The intracavity bottom of closed cans (7) is provided with molecular sieve (12).
9. the freshening device according to claim 8 that propylene is prepared by weight virtue after being hydrogenated with, it is characterised in that the cracking is anti-
The bottom of section (2) is answered to be provided with flow-stop valve (13), and flow-stop valve (13) is located at freshening recovery tube (8) and soaking section (2)
Below connecting portion.
10. the freshening device that propylene is prepared by weight virtue after being hydrogenated with according to claim 1 or 2 or 3 or 4 or 5, its feature exist
In, piston flow riser (14) is provided with the stripping section (3), cyclone separator (15) is provided with the segregation section (4),
The cyclone separator (15) is connected with piston flow riser (14), is provided with the bottom sidewall of the pre lift zone (1)
Regenerated catalyst inlet (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381782.3U CN207357120U (en) | 2017-10-24 | 2017-10-24 | A kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381782.3U CN207357120U (en) | 2017-10-24 | 2017-10-24 | A kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with |
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| Publication Number | Publication Date |
|---|---|
| CN207357120U true CN207357120U (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721381782.3U Active CN207357120U (en) | 2017-10-24 | 2017-10-24 | A kind of freshening device that propylene is prepared by weight virtue after being hydrogenated with |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990201A (en) * | 2019-04-10 | 2019-07-09 | 中韩(武汉)石油化工有限公司 | A kind of catalyst and propylene online mixer anti-blockage method |
-
2017
- 2017-10-24 CN CN201721381782.3U patent/CN207357120U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990201A (en) * | 2019-04-10 | 2019-07-09 | 中韩(武汉)石油化工有限公司 | A kind of catalyst and propylene online mixer anti-blockage method |
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