CN1986073A - Separating pipes of multitubular cyclonic separator - Google Patents
Separating pipes of multitubular cyclonic separator Download PDFInfo
- Publication number
- CN1986073A CN1986073A CN 200510134580 CN200510134580A CN1986073A CN 1986073 A CN1986073 A CN 1986073A CN 200510134580 CN200510134580 CN 200510134580 CN 200510134580 A CN200510134580 A CN 200510134580A CN 1986073 A CN1986073 A CN 1986073A
- Authority
- CN
- China
- Prior art keywords
- cone
- single tube
- multiclone
- tube
- pipe
- 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.)
- Granted
Links
Abstract
The present invention is improved separating pipe of multitubular cyclonic separator for the fume energy recovering system in petrochemical catalytic cracker. The separating pipe consists of one pipe, one air inlet, one ascending pipe, one guider, one shunt cone, one dust exhaust ring, etc. The pipe is one composite structure comprising stainless steel base pipe and one ceramic layer, has one reflecting cone in the lower part and one antiwear surface layer. The shunt cone has diffusion cone in the lower opening. The separating pipe of the present invention has service life as long as 8-10 years and high air flow rate.
Description
Technical field
The invention belongs to the gas-solid separation equipment of petrochemical industry, more specifically say so a kind of petrochemical plant fluidized catalytic cracker and cat-cracker is used for isolating from regenerated flue gas the equipment of catalyst dust, is mainly used in the smoke energy recovering system of petrochemical plant catalytic cracking unit and cat-cracker.
Background technology
Third level cyclone separator is the visual plant that a kind of petrochemical plant fluidized catalytic cracker and cat-cracker are used for isolating from regenerated flue gas catalyst dust.Domestic petroleum chemical plant fluidized catalytic cracker and cat-cracker third level multiclone (hereinafter to be referred as " three revolve ") have tens of industrial coming into operation that are enclosed within present.The domestic three separation single tubes that revolve employing have many kinds of models, from separative efficiency, all than higher, can satisfy the requirement of cigarette machine to kind of dust and granularity.But these separate single tube a fatal defective being arranged all, is exactly that anti-wear performance is relatively poor, is difficult to adapt to the requirement of catalytic cracking unit long period safe operation.These service lifes of separating single tube are shorter, average out to 3～4 years.When catalyst concn is higher in the import flue gas that three revolve, the operation of the separation single tube that has less than 1 year with regard to wear out failure, cause the wearing and tearing aggravation of cigarette machine blade, even by forced-stopping machine.In addition, because wear problem has also limited the processing air quantity of single tube, cause the quantity of single tube to increase, thereby three costs of revolving are higher.Almost the price with a cigarette machine is close for one three price of revolving of present domestic catalytic cracking unit.Three revolve the frequent maintenance and the replacing of single tube, have strengthened the maintenance and the improvement expenses of device.Everything all directly has influence on the economic benefit of China's catalytic cracking unit.
By retrieval, patent related to the present invention mainly contains: CN2086172U, CN87103634A and US4539105A etc., but it separates single tube or does not have wearing layer, and perhaps the wearing layer that is adopted is all different with the present invention with the structure of separating single tube.
Current domestic and international high abrasion resisting material kind is a lot of, but many operating conditions that should not be used for petrochemical plant fluidized catalytic cracker and cat-cracker.The material that has is too expensive, is difficult to come into operation in enormous quantities.Therefore developmental research goes out both to be fit to catalytic cracking and cat-cracker process conditions, and price is moderate again resistance to wears and three revolve the separation single tube, is the task of top priority of China's catalytic cracking unit.Simultaneously, by improving the structure of separating single tube, can reduce the existing pressure drop that separates single tube and separate the processing air quantity of single tube, thereby reduce by three costs that revolve and increase the benefit that the catalytic cracking unit energy reclaims with improving.
Summary of the invention
The objective of the invention is to: improve the abrasion resistance that separates single tube by adopting new wearing layer, extended to more than 8～10 years the service life of single tube, to guarantee the long period safe operation of fluidized catalytic cracker and cat-cracker energy-recuperation system; Reduce the pressure drop that separates single tube by improving the structure of separating single tube, improve every processing air quantity that separates single tube, to reduce by three costs that revolve and to increase the benefit that the catalytic cracking unit energy reclaims.
For achieving the above object, the technical solution used in the present invention is: the separation single tube of this multiclone is a kind of improvement that routine is separated single tube, form the stainless steel-ceramic lamination layer structure of its cylindrical shell for constituting by stainless steel parent tube and ceramic thin film by cylindrical shell, air inlet, riser, guider, branch flow cone and dust discharge ring etc.
The separation single tube of this multiclone, its underpart are provided with the reflection cone of the taper dust outlet geometry that is made of cone, centre bore and wearing layer, and the middle part of its centre bore is a hollow cylindrical, and two ends are conical; The tip angle of its cone is 60-90 °, and the diameter of centre bore is 20～40mm; Separating single tube reflection cone surface wear-resistant layer is refractory ceramics or antifriction metal (AFM) lamination layer structure.
The separation single tube of this multiclone is provided with diffusing cone at the end opening of minute flow cone; Its cone angle is between 85～100 °, and the diameter of end opening (big end) is equal to or greater than the external diameter of riser.
The present invention is owing to adopted the stainless steel-ceramic lamination layer structure manufacturing of high-wear resistance to separate single tube, the microhardness H of wearing layer
vCan reach 1100～1300, be 10 times of common steel tube (carbon steel or stainless steel), and relative wear resistance can be 7 times of carbon steel, can bear solid grain concentration variation in a big way in the gas.Separating the life-span of single tube brought up to more than 8～10 years by original 3～4 years.Compare with the domestic most representative single tube that separates at present, the design permission air quantity that separates single tube can improve about 15%.Promptly under the identical operations exhaust gas volumn, novel separation single tube quantity can reduce about 15%.Under identical air quantity, novel separation single tube reduces about 20% than the pressure drop of existing conventional single tube, and separative efficiency is basic identical.
Description of drawings
Fig. 1 is the structural representation of the separation single tube of a kind of multiclone of the present invention,
Fig. 2 is the tube structure schematic diagram that the present invention separates single tube,
Fig. 3 is the reflection cone structural representation that the present invention separates single tube,
Fig. 4 is the diffusing cone structural representation that the present invention separates single tube.
The specific embodiment
As depicted in figs. 1 and 2, the present invention is a kind of separation single tube of multiclone, form the stainless steel-ceramic lamination layer structure of its cylindrical shell 2 by cylindrical shell 2, air inlet 8, riser 1, guider 3, branch flow cone 4 and dust discharge ring 7 etc. for constituting by stainless steel parent tube 9 and ceramic thin film 10.
As shown in figures 1 and 3, the separation single tube of this multiclone, its underpart is provided with the reflection cone 6 of the taper dust outlet geometry that is made of cone 11, centre bore 12 and wearing layer 13, and the middle part of its centre bore 12 is a hollow cylindrical, and two ends are conical; The tip angle a of its cone 11
1Be 60-90 °, the diameter d of centre bore 12 is 20～40mm; The surface wear-resistant layer 13 of reflection cone 6 is refractory ceramics or antifriction metal (AFM) lamination layer structure.
As shown in Figure 1 and Figure 4, the separation single tube of this multiclone is provided with diffusing cone 5 at the end opening of minute flow cone 4.Its cone angle a
2Be between 85～100 °, the diameter D2 of end opening is equal to or greater than the outer diameter D 1 of riser 1.
As shown in Figure 1, the course of work of the separation single tube of this multiclone is: dust-contained airflow axially enters guider 3 by separating single tube top air inlet 8, and rotation is flowed out after quickening.In the bottom and the annular space between the separator tube of riser 1, gas, solid two-phase are owing to the difference of centrifugal force is tentatively separated.Solid particle moves to by separating tube wall one side, and the part purifying gas flow enters riser 1 by the long and narrow slot on minute flow cone 4.Most of swirling eddy further is concentrated to tube wall with the fine powder that carries through diffusing cone 5 again.Be called the separate and subside space by diffusing cone 5 end openings to distance between the reflection cone 6, the solid grain that the separate and subside space of certain altitude helps in the gas further separates.The air-flow that major part is rotated down (claiming " outer eddy flow ") is pooled to the center above reflection cone 6, change axial flow direction and upwards flow (claiming " interior eddy flow "), discharges from riser 1 at last.The close solid grain that separates tube wall is discharged from the annular space dust discharge ring 7 of reflection cone 6 and separator tube bottom a small amount of disappointing down carrying down, finishes the overall process of gas solid separation.
Compare with existing cyclonic separation single tube, characteristics of the present invention are:
1. adopted the stainless steel-ceramic multiple tube of high-wear resistance.
As depicted in figs. 1 and 2, the cylindrical shell 2 that separates single tube is with a kind of specific process of using, i.e. the stainless steel-ceramic composite steel tube that is prepared into of self propagating high temperature synthesis technique.Its parent tube is a stainless steel 9, and inner face is α-Al
2O
3Ceramic thin film 10.It is to utilize compound material Fe
3O
4, Al powder and other additive carry out thermit reaction, liberated heat melts self, spread the ceramic-metal composite material of formation.Because the preparation process reaction temperature is up to 3000 ℃, be in the product of molten condition, under centrifugal action, Fe wherein and parent tube form the transition zone of chemistry-physical bond, and it is more much higher than the bond strength of the sprayed on material of routine and parent tube.The composite bed internal face is α-Al
2O
3Wearing layer, microhardness H
vReach 1100～1300, be only second to diamond and carborundum.Anti-wear performance is 7 times of ordinary carbon steel material, can use 800 ℃ of down normal phases, and corrosion resistance is good.The multiple tube inside diameter D is between 200～300mm.This The Application of Technology has solved for a long time, separates the wear problem of single tube.He compares by high-abrasive material with other, and the stainless steel-ceramic composite steel tube price that the self propagating high temperature synthesis technique is prepared into is also cheaper.
2. adopted novel dust outlet geometry-reflection cone.
As shown in figures 1 and 3, the effect of reflection cone 6 has 2 points:
(1) reduced the dust discharge air-teturning mixed phenomenon: in the multitube combination, the dust discharge air-teturning mixed phenomenon is the key factor that influences cyclonic separation efficient.When solid grain fine powder was discharged in the bottom, must have loses heart down on a small quantity discharged.In multitube combination, it is very disorderly in the fines collection storehouse to lose heart down, and the disequilibrium between each single tube in addition causes the solid grain fine powder of discharge to return cyclone separator again easily and separates in the single tube, or because of the fluctuation of operating parameter, has more aggravated this air-teturning mixed phenomenon.So similar this straight barrel type separator tube shown in Figure 1 bottom should be provided with the blowdown dish, it resembles one " barrier ", has stoped the back-mixing air-flow to enter the separation single tube.A spot of air communication is crossed the blowdown center hole and is returned the separation single tube, and it is unobstructed that it helps dust discharge.
(2) avoided eddy current carrying fine powder: general conventional blowdown dish is a slab construction.As previously mentioned, separate outer eddy flow descending in the single tube and up interior eddy flow axial direction above the blowdown dish change has taken place, can produce bumpy flow, isolated solid grain fine powder is involved in again in the up interior eddy flow in center, and little because of the blowdown hole, stop up easily, so effect is undesirable.The present invention adopts the taper dust outlet geometry---and the fine powder that reflection cone 6, bumpy flow carry enters down in the blowdown gas through the effect of reflection cone 6, or discharges the tornadotron bottom along the cone wall.The aisle spare of dust discharge ring 7 is bigger, and fine powder is difficult for stopping up.The surface wear-resistant layer 13 of reflection cone 6 is heat spray refractory ceramics or antifriction metal (AFM), to prevent the wearing and tearing of reflection cone.
3, adopted reinforcement separated structures-diffusing cone.
As shown in Figure 1 and Figure 4, the effect of diffusing cone 5 is to give a radial component to the limit wall swirling eddy that guider 3 comes out.Diffusing cone is installed on the end opening that separates single tube riser 1.This structure makes that not isolated solid grain fine powder is concentrated to the limit wall that separates single tube in the air-flow under the effect of inertia force, helps the separation in sedimentation separation space, bottom.Proof increases diffusing cone 5 by experiment, and the height that improves the efficient of separating single tube, reduces the pressure drop of single tube and reduce separated space is all had better action.
Embodiment:
Certain petrochemical plant FCC apparatus multitube three lathe turner parameter of planting is as follows:
Exhaust gas volumn: 2280～2493Nm
3/ min, temperature: 700～720 ℃, pressure: 0.2～0.22MPa (g)
Determine that three revolve separation single tube radical, diameter, and estimate three investments of revolving.
Three revolve design parameter:
Exhaust gas volumn m
3/ h is normal: 166354 maximums: 173741
Temperature: ℃ 700 720
Pressure: MPa (g) 0.2 0.22
Now routine being separated single tube three revolves and separates single tube three with the present invention and revolve result of calculation to be compared as follows table listed:
| Project | Unit | The conventional single tube three that separates revolves | The present invention separates single tube three and revolves | Annotate | |||
| Normally | Maximum | Normally | Maximum | ||||
| Separate single tube quantity | Root | 80 | 70 | Single tube internal diameter 250mm | |||
| Every mono-tube design treating capacity | m 3/h | 2080 | 2170 | 2350 | 2480 | ||
| Separate the single tube pressure drop | KPa | 12 | 12.7 | 12.2 | 12.8 | ||
| Three revolve diameter of the housing | mm | 5800 | 5400 | ||||
| Separate the single tube total price | Ten thousand yuan | 144 | 147 | ||||
| Three revolve stainless steel internals gross weight | t | 32 | 28 | ||||
| Housing carbon steel gross weight | t | 35 | 30 | ||||
| Lining weight | t | 31 | 27 | ||||
| Three revolve total price | Ten thousand yuan | ～400 | ～365 | ||||
| Estimation separates the single tube life-span | Year | 4～6 | 8～10 | ||||
From this table as can be seen, adopt the present invention to separate three of single tube and revolve, revolve the equipment gross investment compared with routine separation single tube three and can reduce 350,000 yuan, about about 8～9%.
Claims (6)
1, a kind of separation single tube of multiclone, it comprises cylindrical shell (2), air inlet (8), riser (1), guider (3), divides flow cone (4) and dust discharge ring (7), it is characterized in that the stainless steel-ceramic lamination layer structure of described cylindrical shell (2) for being made of stainless steel parent tube (9) and ceramic thin film (10).
2, the separation single tube of multiclone as claimed in claim 1, it is characterized in that its underpart is provided with the reflection cone (6) of the taper dust outlet geometry that is made of cone (11), centre bore (12) and wearing layer (13), the middle part of its centre bore (12) is a hollow cylindrical, and two ends are conical.
3, the separation single tube of multiclone as claimed in claim 2 is characterized in that the tip angle a of the cone (11) in the described reflection cone (6)
1Be 60～90 °, the diameter d of centre bore (12) is 20～40mm.
4, the separation single tube of multiclone as claimed in claim 3, the surface wear-resistant layer (13) that it is characterized in that described reflection cone (6) is refractory ceramics and antifriction metal (AFM) lamination layer structure.
5, the separation single tube of multiclone as claimed in claim 1 or 2 is characterized in that being provided with diffusing cone (5) at the end opening of a minute flow cone (4).
6, the separation single tube of multiclone as claimed in claim 5 is characterized in that the cone angle a of described diffusing cone (5)
2Be between 85～100 °, the diameter D2 of end opening (big end) is equal to or greater than the outer diameter D 1 of riser (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101345804A CN100528370C (en) | 2005-12-19 | 2005-12-19 | Separating pipe of multitubular cyclonic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101345804A CN100528370C (en) | 2005-12-19 | 2005-12-19 | Separating pipe of multitubular cyclonic separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986073A true CN1986073A (en) | 2007-06-27 |
| CN100528370C CN100528370C (en) | 2009-08-19 |
Family
ID=38183096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101345804A Active CN100528370C (en) | 2005-12-19 | 2005-12-19 | Separating pipe of multitubular cyclonic separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100528370C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152678A1 (en) * | 2008-06-19 | 2009-12-23 | 北京中天油石油天然气科技有限公司 | A cyclone separator |
| CN101422757B (en) * | 2007-11-01 | 2010-08-25 | 中国石油大学(北京) | High efficient low resistance cyclone separator |
| CN102343310A (en) * | 2011-08-17 | 2012-02-08 | 中国石油大学(北京) | Shunting core pipe and single-pipe cyclone separator with same |
| CN102513227A (en) * | 2011-12-07 | 2012-06-27 | 常熟市华能环保工程有限公司 | Centrifugal guide vane |
| CN102716819A (en) * | 2012-06-14 | 2012-10-10 | 东北石油大学 | Variable-section multiple-blade deflector type inner cone separator |
| CN102950064A (en) * | 2012-09-28 | 2013-03-06 | 刘宇婧 | Energy-saving dusting machine |
| CN107998994A (en) * | 2017-12-28 | 2018-05-08 | 宜春万申制药机械有限公司 | A kind of energy saving whirlpool fluid bed |
| CN110132676A (en) * | 2019-05-27 | 2019-08-16 | 中石化炼化工程（集团）股份有限公司 | A kind of method that Fast simulation FCC apparatus three revolves the system of single tube and smoke machine fouling and prepares the dirty sample of simulation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539105A (en) * | 1983-11-17 | 1985-09-03 | Wilbanks International, Inc. | Cyclone separator having abrasion resistant cone covered by a plastic sleeve with flexible seal regions |
| US4710299A (en) * | 1984-01-24 | 1987-12-01 | Noel Carroll | Cyclone separator |
-
2005
- 2005-12-19 CN CNB2005101345804A patent/CN100528370C/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101422757B (en) * | 2007-11-01 | 2010-08-25 | 中国石油大学(北京) | High efficient low resistance cyclone separator |
| WO2009152678A1 (en) * | 2008-06-19 | 2009-12-23 | 北京中天油石油天然气科技有限公司 | A cyclone separator |
| US8333283B2 (en) | 2008-06-19 | 2012-12-18 | Sino-Gas & Oil Technology, Co., Ltd. | Cyclone separator |
| CN102343310A (en) * | 2011-08-17 | 2012-02-08 | 中国石油大学(北京) | Shunting core pipe and single-pipe cyclone separator with same |
| CN102513227A (en) * | 2011-12-07 | 2012-06-27 | 常熟市华能环保工程有限公司 | Centrifugal guide vane |
| CN102716819A (en) * | 2012-06-14 | 2012-10-10 | 东北石油大学 | Variable-section multiple-blade deflector type inner cone separator |
| CN102716819B (en) * | 2012-06-14 | 2013-12-11 | 东北石油大学 | Variable-section multiple-blade deflector type inner cone separator |
| CN102950064A (en) * | 2012-09-28 | 2013-03-06 | 刘宇婧 | Energy-saving dusting machine |
| CN102950064B (en) * | 2012-09-28 | 2013-11-20 | 刘宇婧 | Energy-saving dusting machine |
| CN107998994A (en) * | 2017-12-28 | 2018-05-08 | 宜春万申制药机械有限公司 | A kind of energy saving whirlpool fluid bed |
| CN110132676A (en) * | 2019-05-27 | 2019-08-16 | 中石化炼化工程（集团）股份有限公司 | A kind of method that Fast simulation FCC apparatus three revolves the system of single tube and smoke machine fouling and prepares the dirty sample of simulation |
| CN110132676B (en) * | 2019-05-27 | 2021-12-17 | 中石化炼化工程（集团）股份有限公司 | System for rapidly simulating scaling of three-rotation single tube and smoke machine of FCC (fluid catalytic cracking) device and method for preparing simulated scale sample |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100528370C (en) | 2009-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100528370C (en) | Separating pipe of multitubular cyclonic separator | |
| CN110052226B (en) | Method and device for recovering in-situ online rotational flow activity of catalyst in fluidized bed hydrogenation reactor | |
| EP2131939B1 (en) | Filter apparatus and method | |
| CN1524623B (en) | External separator and cyclone separator for fluidic catalytic cracking process | |
| CN201006498Y (en) | Third-stage cyclone separator | |
| US8945283B1 (en) | Apparatuses and methods for gas-solid separations using cyclones | |
| CN109999729B (en) | Method and device for recovering in-situ online rotational flow activity of catalyst in fluidized bed hydrogenation reactor | |
| CN101116844A (en) | Alpha type cyclone separator | |
| US10758921B2 (en) | Separation device | |
| US20150182897A1 (en) | Filter Tube for High Temperature Gas-Solid Separation | |
| CN209997320U (en) | cyclone separator and separation system for inhibiting coking of outer wall of riser | |
| EP3265205A1 (en) | Improved swirl tube separators | |
| CN106732823A (en) | A kind of regenerating catalyst in fluidized bed method | |
| CN104549566A (en) | Catalytic conversion catalyst regenerator and regeneration method | |
| CN101301640B (en) | Cyclone separating device | |
| CN101104814B (en) | Wear-resisting jet pipe | |
| CN101048429B (en) | Apparatus and process for the gas-phase polymerization of olefins | |
| CN204148014U (en) | A kind of large flux high temperature dusty gas cyclone separator with pressure | |
| CN205109603U (en) | Novel fluidized bed reactor | |
| CA2058690C (en) | Apparatus for separating particulate material from hot gas | |
| CN107158811A (en) | A kind of filter element preparation method applied to coal liquifaction product gas solid separation | |
| CN206624799U (en) | Organic oxygen-containing compound olefin hydrocarbon apparatus | |
| Heidenreich | Hot gas filters | |
| CN201702047U (en) | Novel critical flow rate spraying nozzle | |
| CN206478006U (en) | A kind of open centrifugal pump impeller with the Ni-based diamondite sprayed coating of nanometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100029 Beijing City, Chaoyang District Hui Street No. 6 Co-patentee after: Sinopec Engineering Incorporation Patentee after: China Petrochemical Group Corp. Co-patentee after: Wuxi Petrochemical Equipment Co., Ltd. Address before: 100029 Beijing City, Chaoyang District Hui Street No. 6 Co-patentee before: Engrg Construction Co., SINOPEC Patentee before: China Petrochemical Group Corp. Co-patentee before: Wuxi Petrochemical Equipment Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SINOPEC ENGINEERING INCORPORATION Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20130906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100029 CHAOYANG, BEIJING TO: 100101 CHAOYANG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130906 Address after: Anhui Beili Anyuan 21 No. 100101 Beijing Chaoyang District City Patentee after: Sinopec Engineering Incorporation Patentee after: Wuxi Petrochemical Equipment Co., Ltd. Address before: 100029 Beijing City, Chaoyang District Hui Street No. 6 Patentee before: China Petrochemical Group Corp. Patentee before: Sinopec Engineering Incorporation Patentee before: Wuxi Petrochemical Equipment Co., Ltd. |