CN109026762A - A kind of aromatic hydrogenation device centrifugal compressor - Google Patents
A kind of aromatic hydrogenation device centrifugal compressor Download PDFInfo
- Publication number
- CN109026762A CN109026762A CN201811019573.3A CN201811019573A CN109026762A CN 109026762 A CN109026762 A CN 109026762A CN 201811019573 A CN201811019573 A CN 201811019573A CN 109026762 A CN109026762 A CN 109026762A
- Authority
- CN
- China
- Prior art keywords
- compressor
- aromatic hydrogenation
- bearing
- impeller
- centrifugal compressor
- 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.)
- Pending
Links
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 33
- 125000003118 aryl group Chemical group 0.000 title claims abstract description 31
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000004517 catalytic hydrocracking Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000010626 work up procedure Methods 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 2
- 125000003983 fluorenyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 238000001833 catalytic reforming Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- F04D17/125—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 the casing being vertically split
-
- 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
- F04D29/08—Sealings
- F04D29/083—Sealings 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
- F04D29/26—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of aromatic hydrogenation device centrifugal compressor, mainly by stator pack (casing, partition, balancing frame sealing, mouth circle sealing, end cap), rotor set (main shaft, impeller, spacer, balancing frame), bearing group (spring bearing, thrust bearing), the composition such as dry gas seals, it is characterized by: (1) compressor multistage pressure, and use vertical subdivision structure；(2) totally six to eight impellers, the diameter of each impeller are equal for compressor；(3) partitions at different levels successively closely connect together to form partition beam by stay-bolt, and outlet partition plate is fixed on conjunction on end cap by seam allowance and bolt；(4) spring bearing uses tilting-pad bearing, uses the identical structure in two sides in main shaft two sides, thrust bearing is Jin Sibailei type；(5) dry gas seals are mounted on compressor both ends, are provided with independent control system.Application of this centrifugal compressor particularly suitable for aromatic hydrogenation process, achieves good technical effect.
Description
Technical field
The invention belongs to technical field of petrochemical industry, and in particular to a kind of centrifugation pressure for aromatic hydrogenation matched with devices
Contracting machine.
Background technique
Heavy oil especially residual hydrocracking is reacted, and is a kind of height for carrying out various reactions comprising various ingredients and simultaneously
The complex reaction system of coupling, but for component reaction type, mainly the hydrocracking of polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon include
Naphthalene, anthracene, phenanthrene, pyrene,, 18 substances such as fluorenes, wherein naphthalene is widely used in production phthalic anhydride, dyestuff, drug and synthetic resin, and anthracene,
Phenanthrene, pyrene,, fluorenes etc. then using less it is necessary to convert the wider chemical combination of purposes for these aromatic hydrocarbons by being hydrocracked
Object, such as benzene and its derivative, low boiling point alkane or cycloalkane.
Chinese patent application case 201110314963.5 disclose " a kind of hydrocatalyst for saturating arylhydrocarbon and preparation method and
Aromatic hydrogenation catalysis process ", wherein be not directed to the structure of compressor itself, function to compressor itself and how to be applicable in
Reference value is had no in catalytic reforming process.
Chinese patent application case 201680060786.3 discloses " by comprehensive crude oil diesel oil hydrogenation processing and aromatic hydrocarbons equipment
Waste-heat power generation ", wherein be not directed to the structure of compressor itself, function to compressor itself and how to be suitable for catalysis
Reforming process has no reference value.
Chinese patent 201521077307.8 discloses a kind of " the circulating hydrogen compression in crude benzole hydrogenation production technology
Machine ", it only is being additionally arranged a bracket, any improvement is not made for compressor itself.
In order to be suitable for aromatic hydrogenation technique, we must the designed, designed circulating hydrogen compressor new with innovation.
Summary of the invention
The present invention is the special process requirement in order to meet aromatic hydrogenation, researches and develops a kind of aromatic hydrogenation device centrifugal compressed
Machine, i.e., a kind of special circulating hydrogen compressor.
Aromatic hydrogenation device centrifugal compressor of the invention, mainly by stator pack (casing, partition, balancing frame sealing, mouth
Circle sealing, end cap), rotor set (main shaft, impeller, spacer, balancing frame), bearing group (spring bearing, thrust bearing), dry gas seals
Deng composition, it is characterised in that:
(1) compressor multistage pressure, and use vertical subdivision structure；
(2) totally six to eight impellers, the diameter of each impeller are equal for compressor；
(3) partitions at different levels successively closely connect together to form partition beam by stay-bolt, and outlet partition plate leans on seam allowance and spiral shell
Bolt is fixed on conjunction on end cap；
(4) spring bearing use tilting-pad bearing, main shaft two sides use the identical structure in two sides, thrust bearing be gold this
Primary thunder type；
(5) dry gas seals are mounted on compressor both ends, are provided with independent control system.
Aromatic hydrogenation device centrifugal compressor of the invention, it is characterised in that described impeller diameter is 400 millimeters.
Aromatic hydrogenation device centrifugal compressor of the invention, it is characterised in that described impeller diameter is 800 millimeters.
Aromatic hydrogenation device centrifugal compressor of the invention, it is contemplated that how to make air-flow in fixed generated flowing damage
The problem of reducing is lost, to obtain higher stage efficiency, the blade of impeller is all made of swept-back structure.
Aromatic hydrogenation device centrifugal compressor of the invention, it is also contemplated that the gas load of every grade of impeller two sides is different
It causes, rotor will be made by axial force.Balancing frame is arranged in the high side of pressure, so that it may utilize the pressure difference of its two sides gas
Carry out balancing axial thrust.
Aromatic hydrogenation device centrifugal compressor of the invention, described spring bearing and thrust bearing, spring bearing pair
The rotor of compressor plays the role of support, be made span size have to the performance of compressor it is conclusive.Thrust axis
Hold is for balancing remaining axial thrust, to guarantee the steady running of compressor.
The application of aromatic hydrogenation device centrifugal compressor of the invention particularly suitable for aromatic hydrogenation process, we
This nonstandard new product exactly manufactured experimently according to the particular/special requirement of user.The favorable comment of user has been obtained, has been created quite for user
Big economic benefit achieves very gratifying technical effect.
Detailed description of the invention
Fig. 1 is the whole sectional view of aromatic hydrogenation device centrifugal compressor of the invention；
Fig. 2 is the stator pack sectional view of aromatic hydrogenation device centrifugal compressor of the invention；
Fig. 3 is the rotor figure of aromatic hydrogenation device centrifugal compressor of the invention；
Fig. 4 is the backward bent vane figure of aromatic hydrogenation device centrifugal compressor of the invention.
Specific embodiment
Aromatic hydrogenation device of the invention is further described and is supplemented with centrifugal compressor with reference to the accompanying drawing.
As shown in Figure 1, aromatic hydrogenation device of the invention centrifugal compressor includes 1 stator pack, 2 rotor sets, 3 bearings
Group, 4 four big groups of portions of dry gas seals group.
Fig. 2 is the stator pack sectional view of aromatic hydrogenation device centrifugal compressor of the invention, as shown in Fig. 2, stator
Group includes 11 casings, 12 left end caps, 13 right end caps, 14 partitions, 15 air inlet cylinders, 16 chimney fans, 17 sealings.By the upper of compressor
The partition of lower subdivision is joined together to form partition beam 14, the fastening of 11 two side ends cover bolt of cylinder by stay-bolt.It will be every
Plate beam is installed in cylinder 11 by partition specific purpose tool, then left end cap 12 and right end cap 13 are passed through bolt and cylinder 11
It closes, air inlet cylinder 15 and chimney fan 16 is welded with below cylinder, some other part is mounted on end cap in order and is formed completely
Stator pack 1.
Fig. 3 is the rotor figure of aromatic hydrogenation device centrifugal compressor of the invention, as shown in figure 3, on rotor of the present invention
Impeller 21 according to being sequentially arranged on main shaft 22 as shown in the figure, positioned between impeller and impeller by spacer 23, suitable
Balancing frame 24 is installed after the impeller 21 of row, is fixed impeller location on rotor by locknut 25 and 26, successively according to rotor figure
Thrust disc 27, adjusting pad 28 and stopper ring 29 are mounted on main shaft 22 and form complete rotor set.
Fig. 4 is the backward bent vane schematic diagram of aromatic hydrogenation device centrifugal compressor of the invention.As shown, rear curved
Blade impellers air stream outlet absolute velocity c2It is smaller, keep air-flow flow-type loss in diffuser also small.Pressure in grade
It increases, is mainly completed in impeller, and the air-flow in impeller is not likely to produce the separation in boundary layer by the effect of centrifugal force,
So the gas flow loss in impeller, comes a little bit smaller than flow losses in diffuser, thus the efficiency of entire grade just compared with
It is high.
We pass through specific embodiment again and make to the parameter of aromatic hydrogenation device centrifugal compressor of the invention below
Further instruction.
1 100 ten thousand tons/year of continuous reformer centrifugal compressors of embodiment
Six grade centrifugal compressors of the present embodiment for vertical subdivision, six impeller in-line arrangements, impeller use three-dimensional closed impeller,
Impeller diameter 800mm, blade use rear kinking structure, and diffuser shape is vaned diffuser, polytropic efficiency highest during work
Up to 86.9%.
2 150 ten thousand tons/year of hydrocracking unit centrifugal compressors of embodiment
Six grade centrifugal compressors of the present embodiment for vertical subdivision, six impeller in-line arrangements, impeller use binary double shrouded wheel,
Impeller diameter 400mm, blade use rear kinking structure, and diffuser shape is vaneless diffuser, polytropic efficiency highest during work
Up to 81.5%.
3 150 ten thousand tons/year of diesel hydrotreater centrifugal compressors of embodiment
Eight grade centrifugal compressors of the present embodiment for vertical subdivision, eight impeller in-line arrangements, impeller use binary double shrouded wheel,
Impeller diameter 400mm, blade use rear kinking structure, and diffuser shape is vaneless diffuser, polytropic efficiency highest during work
Up to 72.9%.
The present invention does not limit to above-mentioned a embodiment, and for those skilled in the art, form of the invention can be done
Corresponding change and modification, all change and modification within the spirit and principles in the present invention are regarded as comprising the present invention
Permission within.
Claims (4)
1. a kind of aromatic hydrogenation device centrifugal compressor, mainly by stator pack, (casing, partition, balancing frame sealing, mouth circle are close
Envelope, end cap), rotor set (main shaft, impeller, spacer, balancing frame), bearing group (spring bearing, thrust bearing), the groups such as dry gas seals
At, it is characterised in that:
(1) compressor multistage pressure, and use vertical subdivision structure；
(2) totally six to eight impellers, the diameter of each impeller are equal for compressor；
(3) partitions at different levels successively closely connect together to form partition beam by stay-bolt, and outlet partition plate leans on seam allowance and bolt handle
Conjunction is fixed on end cap；
(4) spring bearing uses tilting-pad bearing, uses the identical structure in two sides, thrust bearing Jin Sibailei in main shaft two sides
Type；
(5) dry gas seals are mounted on compressor both ends, are provided with independent control system.
2. aromatic hydrogenation device centrifugal compressor according to claim 1, it is characterised in that described impeller diameter is 400
Millimeter.
3. aromatic hydrogenation device centrifugal compressor according to claim 1, it is characterised in that described impeller diameter is 800
Millimeter.
4. aromatic hydrogenation device centrifugal compressor according to claim 1, it is characterised in that the blade of described impeller is equal
Using swept-back structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019573.3A CN109026762A (en) | 2018-09-03 | 2018-09-03 | A kind of aromatic hydrogenation device centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019573.3A CN109026762A (en) | 2018-09-03 | 2018-09-03 | A kind of aromatic hydrogenation device centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109026762A true CN109026762A (en) | 2018-12-18 |
Family
ID=64622800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811019573.3A Pending CN109026762A (en) | 2018-09-03 | 2018-09-03 | A kind of aromatic hydrogenation device centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026762A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236582A (en) * | 2021-01-25 | 2021-08-10 | 沈阳斯特机械制造有限公司 | Centrifugal compressor with water injection system |
| 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 |
-
2018
- 2018-09-03 CN CN201811019573.3A patent/CN109026762A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236582A (en) * | 2021-01-25 | 2021-08-10 | 沈阳斯特机械制造有限公司 | Centrifugal compressor with water injection system |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103225624A (en) | Double-casing symmetric type radial subdivision multiple-stage centrifugal pump | |
| US9453511B2 (en) | Pump system | |
| CN109026762A (en) | A kind of aromatic hydrogenation device centrifugal compressor | |
| CN104863643B (en) | Turbine is radially centrifuged | |
| CN110439634A (en) | One kind being used for direct connection natural gas radial-inflow turboexpaner generating equipment | |
| CN203214340U (en) | Double-shell symmetric radially-split multistage centrifugal pump | |
| CN203035606U (en) | Impeller of MCO-type centrifugal compressor | |
| CN108869335A (en) | A kind of four deep processing device centrifugal compressor of butadiene carbon | |
| CN106415154A (en) | Device and method for converting thermal energy | |
| CN202926661U (en) | Centrifugal compressor | |
| CN106762714A (en) | Centrifugal compressor of the dehydrogenation of isobutane device with intercooler | |
| CN107387432A (en) | It is a kind of to be alkylated applicable middle aerating formula multistage centrifugal compressor | |
| CN106285788B (en) | A kind of axle stream expanding machine structure of replacing formula | |
| CN219081866U (en) | Centrifugal air compressor of fuel cell | |
| CN214660937U (en) | Heat pump compressor | |
| CN206858494U (en) | Continuous reformer combination centrifugal compressor | |
| CN215949868U (en) | Cracking gas compressor for polypropylene device | |
| CN107630825A (en) | A kind of catalytic reforming unit centrifugal compressor | |
| CN206035832U (en) | Open multistage centrifugal pump in double feed inlet double suction level | |
| CN207687005U (en) | A kind of C5/C6 isomerization units centrifugal compressor | |
| CN209875479U (en) | Coaxial symmetrically-arranged multistage hydraulic turbine direct-drive pump | |
| CN114233649A (en) | A supercritical carbon dioxide compressor | |
| CN107061311A (en) | Heavy-oil catalytic olefin hydrocarbon apparatus centrifugal compressor | |
| CN203081859U (en) | Vertical type double-cylinder-body multilevel split centrifugal pump | |
| CN208885550U (en) | A kind of four deep processing device centrifugal compressor of butadiene carbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |