CN107165837A - A kind of centrifugal compressor of delay coking process application - Google Patents
A kind of centrifugal compressor of delay coking process application Download PDFInfo
- Publication number
- CN107165837A CN107165837A CN201710479403.2A CN201710479403A CN107165837A CN 107165837 A CN107165837 A CN 107165837A CN 201710479403 A CN201710479403 A CN 201710479403A CN 107165837 A CN107165837 A CN 107165837A
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- China
- Prior art keywords
- impeller
- bearing
- casing
- rotor
- coking process
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of centrifugal compressor of delay coking process application, including main shaft, impeller, dividing plate, shaft coupling, diffuser, balance tracheae, upper casing, lower casing, seal assembly and bearing, it is characterised in that：(1) casing of compressor is divided into upper and lower two body from the horizontal plane of rotating shaft, and upper shell is fixed by the seal at two ends with lower casing body phase, and lower house is then fixed on bearing；(2) it is installed in series by parts such as backward bending type double shrouded wheel, spacer, the balancing frames of multistage same diameter on main shaft with rotor is combined into, rotor is placed on lower house by bearing and bearing block；(3) wherein the backward bending type double shrouded wheel of same diameter is arranged using back-to-back mode；(4) when impeller quantity is even number, using arranging in back-to-back fashion two-by-two；(5) when impeller quantity is odd number, using the spread pattern of low pressure stage impeller more than high pressure section；(6) Balance Air pipe is installed before and after outside two-piece housing additional the present invention is especially suitable for the application of the delay coking process of petroleum chemical enterprise, can be improved efficiency, be reduced cost.
Description
Technical field
The invention belongs to the technical field of petrochemical industry special equipment, that is, it is petrochemical industry delay coking process to provide a kind of
Matching used centrifugal compressor.
Background technology
Delayed coking is a kind of oil secondary operation technology, and it is using the mink cell focus of poor hydrogen as raw material, in the high temperature (moon 500
DEG C) carry out the thermal cracking and condensation reaction of depth, production rich gas, raw gasoline, diesel oil, the technology of wax oil and coke.It is so-called to prolong
Mean late and be brought rapidly up coking oil to pyrogenetic reaction temperature by heating stove heat, in the secondary not green coke of reaction boiler tube, and allow it
Pyrogenetic reaction is carried out again in coke drum is entered, because there is such " delay ", therefore this technology is referred to as Delayed Coking Technology.
Delayed coking is similar to thermal cracking, and raw material is simply heated to the temperature required for pyrogenetic reaction in a short time,
Cracking reaction does not occur in boiler tube for control raw material, and is deferred in ad hoc coke drum and carries out cracking reaction.
Delayed coking raw material can be heavy oil, residual oil, or even pitch, and its product is gas, gasoline, diesel oil, wax oil respectively
And coke.Delayed coking can handle carbon residue and tenor very high inferior raw material, improve the yield and decarburization effect of light oil
Rate, has operation serialization, treating capacity is big, flexibility is strong, invest and the low advantage of operating cost, has obtained fast in China in recent years
The development of speed.
Delayed coking unit is mainly made up of 8 parts, and it includes：1 coked fraction；2 fractionating sections；3 cooking gases are returned
Receive and disengagement section；4 hydraulic decoking parts；The dehydration of 5 coke and storage and transportation part；6 air blowing blowdown systems；7 steam generation parts
Part is calcined with 8 coke.Wherein transporting for medium must rely on air compressor or delivery pump,
Chinese patent 201420064099.7 provides one kind《Delay coking heating furnace feed pump》, it is provided with three-level
Impeller, first stage impeller is double-entry impeller, sets interstage bushing in the middle of first stage impeller and sencond stage impeller, and sencond stage impeller and three-level
Impeller is then dorsad arranged.
Chinese patent 201510223243.6 then provides one kind《Full working scope operates steadily, and formula is large-scale to cut burnt pump》, its feature
It is balance drum is installed between pump shaft and balance set, balance jacket gland, between balance drum and balance set, balances drum
Throttle clearance is respectively provided between balance jacket gland.
But they are only the process requirements being applied under certain condition, and not with the close of petrochemical enterprise
Cut distribution is closed, and adopts the opinion of technological design and construction department, therefore is not widely applied.
The content of the invention
The matching used centrifugal compressor of delay coking process is preferably supplied it is an object of the invention to provide a kind of.
The centrifugal compressor of delay coking process provided by the present invention application, including main shaft, impeller, dividing plate, shaft coupling,
Diffuser, balance tracheae, upper casing, lower casing, seal assembly and bearing, it is characterised in that：
(1) casing of compressor is divided into upper and lower two body from the horizontal plane of rotating shaft, and upper shell is by the seal at two ends with
Housing is mutually fixed, and lower house is then fixed on bearing；
(2) it is installed in series and is matched somebody with somebody on main shaft by parts such as backward bending type double shrouded wheel, spacer, the balancing frames of multistage same diameter
Rotor is combined into, rotor is placed on lower house by bearing and bearing block；
(3) wherein the backward bending type double shrouded wheel of same diameter is arranged using back-to-back mode；
(4) when impeller quantity is even number, using arranging in back-to-back fashion two-by-two；
(5) when impeller quantity is odd number, using the spread pattern of low pressure stage impeller more than high pressure section；
(6) Balance Air pipe is installed before and after outside two-piece housing additional.
The centrifugal compressor of the delay coking process application of the present invention, the impeller arranged using back-to-back mode and installs flat additional
Weighing apparatus tracheae effectively reduces the stable operation that compressor axial float ensure that equipment, reduces rubbing between tumbler and static element
Wipe,
The centrifugal compressor of the delay coking process application of the present invention, using the multi-stage impeller of same diameter, prolongs in realization
On the premise of pressure needed for the circulation power of slow coking process requirement.Compressor design production cost is reduced, shortens and sets
The standby production cycle.The demand of theoretical research, produce reality and user are organically combined, is that developmental achievement Industry Promotion is explored
New direction is gone out.
In front of the centrifugal compressor of the delay coking process application of the present invention, described horizonally split form, every grade of impeller
Provided with wheel cap sealing, compressor two ends provided with structures such as shaft end seal, dry gas seals, the leakage rate of gas medium is reduced, is subtracted
Few pressure loss, improves reduced overall engine efficiency, while reducing the possibility of security incident generation.
Brief description of the drawings
Fig. 1 is the main sectional view of compressor in a kind of centrifugal compressor of delay coking process application of the invention, and Fig. 2 is pressure
Contracting machine outline drawing.
Embodiment
With reference to the accompanying drawings and detailed description to the present invention delay coking process application centrifugal compressor make into
One step is described in detail.
Fig. 1 is the main sectional view of compressor in the centrifugal compressor that delay coking process of the present invention is applied, as shown in the figure.Prolong
Slow coking process application centrifugal compressor include into air duct 1,3, it is chimney fan 2,4 upper casings 5, lower casing 6, main shaft 7, impeller 8, close
Sealing assembly 9, dividing plate 10, bearing 11, shaft coupling 12.
Fig. 2 is the outline drawing of compressor.It includes upper casing 5, lower casing 6, bolt 13, and dividing plate 10 is separately mounted to
On upper casing 5, lower casing 6, on the seal that bearing 11 is placed on to lower casing 6, rotor is placed on bearing, by upper casing and lower machine
13, shell bolt is become reconciled, and completes the installation of complete machine, balances tracheae 14.
The centrifugal compressor of the delay coking process application of the present invention, first processes all parts of compressor respectively,
And after testing and reaching quality standards, then assembled, debugged, test run, just packaging is dispatched from the factory after user representative is satisfied with.
The embodiment of the centrifugal compressor of several typical delay coking process applications of the present invention is set forth below out, they
Parameters are designed according to the requirement of user.Inventor was once signing relevant technical know-how association before with user
View, all data all do not leak.
1 100 ten thousand tons/year of delayed coking unit centrifugal compressors of embodiment
The present embodiment is seven grades of centrifugal compressors, and impeller uses double shrouded wheel, and its blade uses swept-back structure, and rotor is adopted
Arranged with seven back-to-back modes of impeller that external profile diameter is 450mm, three impellers of high pressure section, four impellers of low pressure stage.And
Install balance tracheae additional between high pressure section and low pressure stage.
2 100 ten thousand tons/year of delayed coking unit centrifugal compressors of embodiment
The present embodiment is eight grades of centrifugal compressors, and impeller uses double shrouded wheel, and its blade uses swept-back structure, and rotor is adopted
Arranged with eight back-to-back modes of impeller that external profile diameter is 450mm, four impellers of high pressure section, four impellers of low pressure stage.And
Install balance tracheae additional between high pressure section and low pressure stage.
3 140 ten thousand tons/year of delayed coking unit centrifugal compressors of embodiment
The present embodiment is seven grades of centrifugal compressors, and impeller uses double shrouded wheel, and its blade uses swept-back structure, and rotor is adopted
Arranged with seven back-to-back modes of impeller that external profile diameter is 450mm, three impellers of high pressure section, four impellers of low pressure stage.And
Install balance tracheae additional between high pressure section and low pressure stage.
4 140 ten thousand tons/year of delayed coking unit centrifugal compressors of embodiment
The present embodiment is six grades of centrifugal compressors, and impeller uses double shrouded wheel, and its blade uses swept-back structure, and rotor is adopted
Arranged with seven back-to-back modes of impeller that external profile diameter is 520mm, three impellers of high pressure section, three impellers of low pressure stage.And
Install balance tracheae additional between high pressure section and low pressure stage.
5 140 ten thousand tons/year of delayed coking unit centrifugal compressors of embodiment
The present embodiment is seven grades of centrifugal compressors, and impeller uses double shrouded wheel, and its blade uses swept-back structure, and rotor is adopted
Arranged with seven back-to-back modes of impeller that external profile diameter is 520mm, three impellers of high pressure section, four impellers of low pressure stage.And
Install balance tracheae additional between high pressure section and low pressure stage.
These compressors are supplied to after user, obtain the favorable comment of user, five embodiments of the above are only that some are typical
Data.But the design of the present invention is never only limited to this five embodiments, all other design sides based on present inventive concept
Case belongs to the scope of protection of the invention.
Claims (1)
1. a kind of centrifugal compressor of delay coking process application, including main shaft, impeller, dividing plate, shaft coupling, diffuser, balance
Tracheae, upper casing, lower casing, seal assembly and bearing, it is characterised in that：
(1) casing of compressor is divided into upper and lower two body, the same lower house of seal that upper shell passes through two ends from the horizontal plane of rotating shaft
Mutually fixed, lower house is then fixed on bearing；
(2) it is installed in series by parts such as backward bending type double shrouded wheel, spacer, the balancing frames of multistage same diameter on main shaft with charge-coupled
Into rotor, rotor is placed on lower house by bearing and bearing block；
(3) wherein the backward bending type double shrouded wheel of same diameter is arranged using back-to-back mode；
(4) when impeller quantity is even number, using arranging in back-to-back fashion two-by-two；
(5) when impeller quantity is odd number, using the spread pattern of low pressure stage impeller more than high pressure section；
(6) Balance Air pipe is installed before and after outside two-piece housing additional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710479403.2A CN107165837A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal compressor of delay coking process application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710479403.2A CN107165837A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal compressor of delay coking process application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165837A true CN107165837A (en) | 2017-09-15 |
Family
ID=59819939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710479403.2A Pending CN107165837A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal compressor of delay coking process application |
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| Country | Link |
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| CN (1) | CN107165837A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829957A (en) * | 2017-10-26 | 2018-03-23 | 沈阳斯特机械制造有限公司 | A kind of heavy oil hydrogenation equipment centrifugal compressor |
| RU2776401C1 (en) * | 2019-03-04 | 2022-07-19 | НУОВО ПИНЬОНЕ ТЕКНОЛОДЖИ - С.р.л. | Configuration of a multi-stage turbomachine (expander-compressor) |
-
2017
- 2017-06-22 CN CN201710479403.2A patent/CN107165837A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829957A (en) * | 2017-10-26 | 2018-03-23 | 沈阳斯特机械制造有限公司 | A kind of heavy oil hydrogenation equipment centrifugal compressor |
| RU2776401C1 (en) * | 2019-03-04 | 2022-07-19 | НУОВО ПИНЬОНЕ ТЕКНОЛОДЖИ - С.р.л. | Configuration of a multi-stage turbomachine (expander-compressor) |
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