CN107882747A - A kind of C5/C6 isomerization units centrifugal compressor - Google Patents
A kind of C5/C6 isomerization units centrifugal compressor Download PDFInfo
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- CN107882747A CN107882747A CN201711212050.6A CN201711212050A CN107882747A CN 107882747 A CN107882747 A CN 107882747A CN 201711212050 A CN201711212050 A CN 201711212050A CN 107882747 A CN107882747 A CN 107882747A
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- Prior art keywords
- impeller
- compressor
- dividing plate
- bearing
- isomerization
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
- F04D29/286—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors multi-stage rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of C5/C6 isomerization units centrifugal compressor, including stator pack, rotor set, bearing group portion and dry gas seals etc. four are most of, it is characterised in that：(1) compressor is vertically to cut open parting structure；(2) dividing plate is fitted together to form dividing plate beam, and the position that compressor compresses gas flows through, including diffuser, bend and return channel are formd between dividing plate and dividing plate, and diffuser uses vaneless diffuser structure；(3) impeller diameter is 400mm, and the number of impeller is 5~7；(4) impeller is serially connected on main shaft, and between two adjacent impellers, the blade of the latter impeller is set relative to the certain angle of the blade deflection of previous impeller；(5) spring bearing uses tilting-pad bearing, and for thrust bearing using Jin Sibaileishi, the both sides of thrust bearing use identical structure；(6) dry gas seals are arranged on the both ends of compressor, have independent control system.Technique of the compressor of the present invention particularly suitable for C5/C6 normal alkane isomerizations, with the supporting application of the isomerization unit by the consistent favorable comment of user.
Description
Technical field
The invention belongs to technical field of petrochemical industry, and in particular to a kind of matched centrifugation of C5/C6 isomerization units
Compressor.
Background technology
With the fast development of Chinese national economy, environmental protection requires increasingly strict to industrial.Vehicle exhaust
People have been caused to pay close attention to the seriousness of atmosphere pollution, the production of clean gasoline has been mentioned in very urgent schedule
.The key component of China's motor petrol is catalytic gasoline, reforms antiknock component on a small quantity at present, and part factory is in high trade mark car
With a small amount of MTBE and alkylate oil is added in gasoline, cause motor petrol alkene and sulfur content height, road octane are low, pungent
The problems such as alkane Distribution value is uneven, benzene content is higher, the solution of these problems must adjust the component of gasoline.According to the tool in China
Body situation, the olefin(e) centent reduced in catalytic gasoline is an important channel, while the addition of appropriate increase Reformed Gasoline, just
Can solve gasoline olefin and the higher problem of benzene content substantially, octane number can meet to require substantially.But to high trade mark gasoline meeting
Bring gasoline product density higher, to reach anti-knock index requirement, and the problems such as cause research octane number (RON) surplus.As can be seen here
Lack the medium blending group of a kind of low alkene, low sulfur content, low-density, road octane in China's clean gasoline formula at present
Point, C5/C6 isomerized oils are just being adapted to this demand.
At the end of the eighties, with the increase to the low leaded of gasoline and unleaded requirement, C5/C6 isomerization process obtains rapidly
Development.From the boiling point and octane number of C5, C6 alkane can be seen that C5 isomerization after octane number can improve 30~40 units, C6
Octane number can improve 50~70 units after isomerization, and therefore, C5/C6 n-alkane values are the most economical of raising octane number
One of effective method.
It is the significant challenge that oil refining enterprise faces using process for cleanly preparing, production environment close friend's product, C5/C6 N-alkanes
Hydrocarbon isomerization processes can produce no sulphur, without the high isomerized oil of alkene and octane number, and isomerized oil is that preferable gasoline is adjusted
Charge-coupled part.
For the technique of accelerated development C5/C6 normal alkane isomerizations, we designed, designed and must create new different
Compressor used is put in structure makeup, to ensure the integrality of isomerization process.
The content of the invention
The present invention is to meet the particular/special requirement of C5/C6 isomerization process, seeks a kind of C5/C6 isomerization process units
With centrifugal compressor, i.e., a kind of special isomerization unit centrifugal compressor.
The C5/C6 isomerization unit centrifugal compressors of the present invention, including stator group part, rotor group part, bearing group portion
Formed with four major parts such as dry gas seals,
The stator group part of compressor is made up of cylinder body, end cap, dividing plate, sealing；
The rotor group part of compressor is by impeller, main shaft, spacer, balancing frame, thrust disc, nut, adjusting pad, stopper ring group
Into；
The bearing group portion of compressor is made up of two spring bearings and a thrust bearing；
The dry gas seals of compressor have oneself independent control unit and system, including body and control two large divisions；
C5/C6 isomerization unit centrifugal compressors are characterised by：
(1) product of low pressure is belonged to according to the technological requirement of C5/C6 isomerization package units, isomerization compressor, point
Son amount is less than 10.Therefore centrifugal compressor used in C5/C6 isomerization units be mostly vertical subdivision type compressor, Neng Gouman
The requirement of sufficient whole system technique；
(2) dividing plate fits together to form dividing plate beam, forms what compressor compresses gas flowed through between dividing plate and dividing plate
Position.Including diffuser, bend and return channel, the diffuser of compressor uses vaneless diffuser, this according to the requirement of technique
Vaneless diffuser is more suitable for whole set process than vaned diffuser；
(3) impeller diameter installed on the rotor group part of C5/C6 isomerization units centrifugal compressor is typically in 400mm
Up and down, the number of impeller is typically at 5~7.Impeller is arranged in order on main shaft, and balancing frame is in the side of single spring bearing.
According to the difference of parameter, the size of impeller diameter and the quantity of impeller can be adjusted, to adjust the globality of isomerization compressor
Energy；
(4) blade shape of C5/C6 isomerization units Centrufugal compressor impeller is typically from one kind, i.e. an isomerization
It is all unified impeller used in compressor.But according to the difference of technological parameter, there is what moiety isomerization compressor used
The impeller of two kinds of forms, the impeller of both forms be also belong to together one it is serial.It is distinguished as the outlet of two kinds of form impellers
Width is different, and other sizes are identical.Between two adjacent impellers, the blade of the latter impeller is set relative to previous leaf
The certain angle of the blade deflection of wheel；
(5) spring bearing of C5/C6 isomerization units centrifugal compressor uses tilting-pad bearing, and thrust bearing is using gold
Si Baileishi's, for proof stress condition, the both sides of thrust bearing use identical structure；
(6) dry gas seals of C5/C6 isomerization units centrifugal compressor are arranged on the both ends of compressor, prevent compressor
Internal gas is to outward leakage.Dry gas seals have independent control system to ensure the normal operation of dry gas seals.
The C5/C6 isomerization unit centrifugal compressors of the present invention, described diffuser is vaneless diffuser, according to user
Given unit design data, after type selecting, under conditions of meeting that user requires, to make the performance of compressor more preferable,
It can be met by adjusting the form of diffuser.
The C5/C6 isomerization unit centrifugal compressors of the present invention, between described two impellers adjacent in impeller, after
The blade of one impeller is set relative to the certain angle of the blade deflection of previous impeller；Used for isomerization compressor
Impeller blade form is backward leaning vane, and deviation angle is at 10 degree to 15 degree.
The C5/C6 isomerization unit centrifugal compressors of the present invention, spread pattern of the described impeller on main shaft is suitable
Row, balancing frame can effectively reduce gas to axial thrust caused by rotor, transport a whole set of unit in the arrangement form of side
Row is more steady.
The C5/C6 isomerization unit centrifugal compressors of the present invention, described spring bearing and thrust bearing, spring bearing
Support is played a part of to the rotor of compressor, support the size of span has conclusive effect, thrust to the performance of compressor
Bearing is for balancing axial thrust caused by compressor drum, to ensure the even running of compressor.
The C5/C6 isomerization unit centrifugal compressors of the present invention, the work particularly suitable for C5/C6 normal alkane isomerizations
Skill, for the supporting favorable comment consistent by user of same C5/C6 isomerization units.
Brief description of the drawings
Fig. 1 is the overall profile of the C5/C6 isomerization unit centrifugal compressors of the present invention；
Fig. 2 is the stator pack profile of the C5/C6 isomerization unit centrifugal compressors of the present invention；
Fig. 3 is the rotor figure of the C5/C6 isomerization unit centrifugal compressors of the present invention；
Embodiment
The C5/C6 isomerization units of the present invention are further described and mended with centrifugal compressor below in conjunction with the accompanying drawings
Fill.
As shown in figure 1, the present invention C5/C6 isomerization units with centrifugal compressor include 1 stator group part, 2 rotor group parts,
3 bearing group portions, 4 dry gas seals groups four group portion greatly.
Fig. 2 show the stator pack profile of the C5/C6 isomerization unit centrifugal compressors of the present invention, stator group part bag
Include 11 cylinder bodies, 12 left end caps, 13 right end caps, 14 dividing plates, 15 enter air duct, 16 chimney fans, 17 sealing.By the subdivision up and down of compressor
Dividing plate partition board portion 14 is joined together to form by stay-bolt, the fastening of the two side ends cover bolt of cylinder 11.Partition board portion is led to
Cross dividing plate specific purpose tool to be installed in cylinder 11, closed by left end cap 12 and right end cap 13 by bolt and cylinder 11, cylinder
Lower section is welded with into air duct 15 and chimney fan 16, and some other part is formed into complete stator pack 1 installed in end cap in order.
Fig. 3 show the rotor figure of the C5/C6 isomerization unit centrifugal compressors of the present invention, on rotor of the invention
Impeller 21 is positioned, in in-line arrangement according to being sequentially arranged at as shown in the figure on main shaft 22 between impeller and impeller by spacer 23
Impeller 21 after balancing frame 24 is installed, impeller location on rotor is fixed by locknut 25 and 26, successively according to rotor figure will
Thrust disc 27, adjusting pad 28 and stopper ring 29 are arranged on main shaft 22 and form complete rotor set.
We are made by specific embodiment to the parameter of the C5/C6 isomerization unit centrifugal compressors of the present invention below
Further instruction.
The C5/C6 isomerization unit centrifugal compressors of embodiment 1
The present embodiment 1 is six grades of centrifugal compressors, and impeller uses binary double shrouded wheel, and its blade uses swept-back structure；
Diffuser uses vaneless diffuser.Steam condition is possessed according to user's field condition, so embodiment uses Steam Turbine Driven.
The C5/C6 isomerization unit centrifugal compressors of embodiment 2
The present embodiment 2 is seven grades of centrifugal compressors, after impeller uses double shrouded wheel, impeller to use binary, its blade to use
Kinking structure, 15 degree are deflected between the blade of front and rear two impeller；Using vaneless diffuser.This embodiment user scene does not possess steaming
Vapour condition, so set C5/C6 isomerization units connect the form that gear-box connects compressor using motor.
The C5/C6 isomerization unit centrifugal compressors of embodiment 3
The present embodiment 3 is seven grades of centrifugal compressors, and impeller uses binary double shrouded wheel, and its blade uses swept-back structure；
Diffuser uses vaneless diffuser.Steam condition is possessed according to user's field condition, so embodiment uses Steam Turbine Driven.
The C5/C6 isomerization unit centrifugal compressors of embodiment 4
The present embodiment 4 is Pyatyi centrifugal compressor, after impeller uses double shrouded wheel, impeller to use binary, its blade to use
Kinking structure, using vaneless diffuser.This embodiment user scene does not possess steam condition, so set C5/C6 isomerization units
Connect the form that gear-box connects compressor using motor.
Above-mentioned each scheme is for the implementation of the C5/C6 isomerization unit centrifugal compressors of different user scene operations
Example, required according to the difference of a whole set of C5/C6 isomerization units technique, drive form and pressure used in C5/C6 isomerization units
The type selecting structure of contracting machine is all different, and above example is C5/C6 isomerization unit of the part in the operation of user scene.
Claims (2)
1. a kind of C5/C6 isomerization units centrifugal compressor, including stator pack, rotor set, bearing group portion and dry gas seals
It is most of Deng four.Stator pack is made up of cylinder body, end cap, dividing plate, sealing.Rotor set is by impeller, main shaft, spacer, balancing frame, thrust
Disk, nut, adjusting pad, stopper ring composition.Bearing group portion is made up of two spring bearings and a thrust bearing.Dry gas seals have
Oneself independent control unit and system, including body and control two large divisions.It is characterized in that：
(1) compressor is vertically to cut open parting structure；
(2) dividing plate is fitted together to form dividing plate beam, and the position that compressor compresses gas flows through is formd between dividing plate and dividing plate,
Including diffuser, bend and return channel, diffuser uses vaneless diffuser structure；
(3) impeller diameter is 400mm, and the number of impeller is 5~7；
(4) impeller is serially connected on main shaft, and between two adjacent impellers, the blade of the latter impeller is set relative to previous
The certain angle of the blade deflection of impeller；
(5) spring bearing uses tilting-pad bearing, and thrust bearing is using Jin Sibaileishi, and the both sides of thrust bearing are using identical
Structure；
(6) dry gas seals are arranged on the both ends of compressor, have independent control system.
2. the C5/C6 isomerization unit centrifugal compressors as described in claim 1, it is characterised in that the leaf of described impeller
Piece is backward-curved blades, and the blade of the latter impeller sets 10 °~15 ° angles of blade deflection relative to previous impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212050.6A CN107882747A (en) | 2017-11-28 | 2017-11-28 | A kind of C5/C6 isomerization units centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212050.6A CN107882747A (en) | 2017-11-28 | 2017-11-28 | A kind of C5/C6 isomerization units centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107882747A true CN107882747A (en) | 2018-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711212050.6A Pending CN107882747A (en) | 2017-11-28 | 2017-11-28 | A kind of C5/C6 isomerization units centrifugal compressor |
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| CN (1) | CN107882747A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520340B (en) * | 2019-02-01 | 2021-09-24 | 三菱重工压缩机有限公司 | Compressor |
| CN114562467A (en) * | 2022-03-01 | 2022-05-31 | 沈阳斯特机械制造有限公司 | Large-pressure-ratio vertical split centrifugal compressor |
| CN117967587A (en) * | 2024-03-27 | 2024-05-03 | 东营联合石化有限责任公司 | Centrifugal compressor for arene isomerization device |
-
2017
- 2017-11-28 CN CN201711212050.6A patent/CN107882747A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520340B (en) * | 2019-02-01 | 2021-09-24 | 三菱重工压缩机有限公司 | Compressor |
| CN114562467A (en) * | 2022-03-01 | 2022-05-31 | 沈阳斯特机械制造有限公司 | Large-pressure-ratio vertical split centrifugal compressor |
| CN117967587A (en) * | 2024-03-27 | 2024-05-03 | 东营联合石化有限责任公司 | Centrifugal compressor for arene isomerization device |
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