CN108240734A - Booster expansion machine air supply system and air separation plant - Google Patents
Booster expansion machine air supply system and air separation plant Download PDFInfo
- Publication number
- CN108240734A CN108240734A CN201810190863.8A CN201810190863A CN108240734A CN 108240734 A CN108240734 A CN 108240734A CN 201810190863 A CN201810190863 A CN 201810190863A CN 108240734 A CN108240734 A CN 108240734A
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- Prior art keywords
- air
- pipeline
- supercharger
- supply system
- machine
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Links
- 238000000926 separation method Methods 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 7
- 239000002808 molecular sieve Substances 0.000 claims description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 210000004712 air sac Anatomy 0.000 claims 1
- 238000005194 fractionation Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 35
- 239000003921 oil Substances 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04781—Pressure changing devices, e.g. for compression, expansion, liquid pumping
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The present invention provides a kind of booster expansion machine air supply system and air separation plants, belong to technical field of air separation, for being supplied to fractionating column, including air cleaning unit, first pipeline and the second pipeline, by being equipped with the first cooler tower on the entrance to fractionating column of the first pipeline successively on first pipeline, the first supercharger that expanding machine drives, second cooler and expanding machine, the main heat exchanger for exchanging heat for expanded air is additionally provided on first pipeline, enter expanding machine after main heat exchanger by the expanded air of the first supercharger, it is additionally provided between air cleaning unit and the first cooler to compress the second supercharger into the gas of the first pipeline on first pipeline.Air separation plant employs the booster expansion machine air supply system.Booster expansion machine air supply system and air separation plant provided by the invention, at low cost and more energy saving, gas extraction rate can greatly improve.
Description
Technical field
The invention belongs to technical field of air separation, more specifically, be related to a kind of booster expansion machine air supply system and
Using the air separation plant of the booster expansion machine air supply system.
Background technology
Air separation plant is exactly using air as raw material, and air is become liquid by the method freezed by compressing depth of round, then
The equipment for producing the inert gases such as oxygen, nitrogen and argon gas is gradually detached from liquid air by rectifying.Air separation plant
Gas supply is by swell refrigeration, and the refrigeration of entire air separation plant follows strictly classical refrigeration cycle.The space division being commonly referred
Refrigeration equipment is primarily referred to as expanding machine.Domestic expanding machine is limited by material at this stage, and swell increment and rotating speed condition each other,
Swell increment is bigger, and impeller diameter is bigger, and edge linear velocity has limiting value, determines that rotating speed cannot be too high, is unable to reach high-speed and high-efficiency,
It is compared with U.S.'s expanding machine, refrigerating capacity low more than 10%.U.S.'s expanding machine is expensive, is equivalent to eight to the ten of domestic expanding machine
Times.Since domestic efficiency of expander is low, it is necessary to which the expansion tolerance of bigger, expansion is large-minded, and the gas of upper tower is fractionated due to entering
Amount cannot be excessive, otherwise can interfere tower rectifying, so can bleed off the part for expanding gas, not enter tower, so as to cause
The recovery rate of fractionating column is greatly reduced.
Invention content
The purpose of the present invention is to provide a kind of booster expansion machine air supply system and air separation plants, it is intended to solve existing sky
Subset supplies, the problem of recovery rate of fractionating column can be caused to be greatly reduced.
To achieve the above object, the technical solution adopted by the present invention is：A kind of booster expansion machine air supply system is provided, is used for
It is supplied to fractionating column, including being used for the air cleaning unit of air filtering, for connecting the air cleaning unit and fractionating column
First pipeline of upper tower and the second pipeline for connecting tower under the air cleaning unit and fractionating column, first pipeline
On by tower on the entrance to fractionating column of the first pipeline successively be equipped with the first cooler, expanding machine drive the first supercharger,
Second cooler and expanding machine are additionally provided with the main heat exchanger for exchanging heat for expanded air on first pipeline, by first
The expanded air of supercharger enters expanding machine after the main heat exchanger, and being located at the air purification on first pipeline fills
It puts and is additionally provided with to compress the second supercharger into the gas of the first pipeline between first cooler.
Further, bypass flow path is additionally provided on first pipeline, the arrival end of the bypass flow path is located at the increasing
The front side of press arrival end, the port of export of the bypass flow path are located at the rear side of the supercharger port of export；The bypass flow path
It is equipped with control valve.
Further, the control valve is pneumatic diaphragm control valve.
Further, first supercharger includes the compression impeller for compressing air inlet, and the expanding machine includes being used for
With the expanding machine impeller for driving the compression impeller.
Further, the expanding machine impeller is coaxially fixed or the expanding machine impeller and compression impeller with compression impeller
It is connected by drive mechanism.
Further, enter institute behind the middle and lower part of the main heat exchanger by the expanded air of first supercharger
State expanding machine.
Further, the air cleaning unit is molecular sieve or seperation film.
Further, the gas in second pipeline enters tower under fractionating column after the main heat exchanger.
Further, the supercharger is air compressor.
The advantageous effect of booster expansion machine air supply system provided by the invention is：Compared with prior art, the present invention increases
Compression swelling machine air supply system, by setting the second supercharger on the first pipeline, the gas compression that will be filtered from air filter equipment is cold
But enter the first supercharger of expanding machine drive afterwards subsequently into expanding machine, using first after the supercharging of the second supercharger
Increase machine, pressure rise before expanding machine machine, refrigerating capacity can greatly increase, while swell increment can reduce, after swell increment reduces, expansion
Machine rotor diameter can reduce accordingly, so as to improve rotating speed.The refrigeration effect of expanding machine will highlight in this way., expanding machine
Corresponding cost can also substantially reduce, and more energy saving after rotor reduction.After swell increment reduces, gas enters tower on fractionating column
Smaller is interfered to rectifying afterwards, therefore extra gas will not be generated, does not need to bleed off the tolerance that expanding machine comes out, due to first
The tolerance of pipeline will not increase, then the surplus air of air cleaning unit filtering can pass through the second gas circuit and enter lower tower, lower tower
Tolerance bigger is processed, gas extraction rate can greatly improve.
The present invention also provides a kind of air separation plants, including fractionating column, further include the above-mentioned booster expansion machine of any one and supply
Gas system.
The advantageous effect of air separation plant provided by the invention is：Air separation plant of the present invention, due to using the pressuring expansion
Machine air supply system, by setting the second supercharger on the first pipeline, the gas compression that will be filtered from air filter equipment, cooling is laggard
Enter the first supercharger of expanding machine drive subsequently into expanding machine, increase after the supercharging of the second supercharger using first
Machine, pressure rise before expanding machine machine, refrigerating capacity can greatly increase, while swell increment can reduce, and after swell increment reduces, expanding machine turns
Sub- diameter can reduce accordingly, so as to improve rotating speed.The refrigeration effect of expanding machine will highlight in this way., expansion machine rotor
Corresponding cost can also substantially reduce, and more energy saving after reduction.After swell increment reduces, gas enters right after tower on fractionating column
Smaller is interfered in rectifying, therefore will not generate extra gas, does not need to bleed off the tolerance that expanding machine comes out, due to the first pipeline
Tolerance will not increase, then air cleaning unit filtering surplus air can pass through the second gas circuit enter lower tower, the processing of lower tower
Tolerance bigger, gas extraction rate can greatly improve.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structure diagram of booster expansion machine air supply system provided in an embodiment of the present invention.
In figure：1st, fractionating column；11st, tower on fractionating column；12nd, tower under fractionating column；13rd, main condenser；2nd, molecular sieve；3rd, first
Pipeline；31st, bypass flow path；32nd, the second supercharger；33rd, the first cooler；34th, the first supercharger；35th, the second cooler；36、
Expanding machine；4th, the second pipeline；5th, main heat exchanger.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " top ", " bottom ", " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Also referring to Fig. 1, now booster expansion machine air supply system provided by the invention is illustrated.The pressuring expansion
Machine air supply system, for being supplied to fractionating column 1, including being used for the air cleaning unit of air filtering, for connecting air purification
Second pipeline of the device with the first pipeline 3 of tower on fractionating column 11 and for connecting tower 12 under air cleaning unit and fractionating column
4, by being equipped with the first cooler 33, expanding machine 36 tower 11 on the entrance to fractionating column of the first pipeline 3 successively on the first pipeline 3
The first supercharger 34, the second cooler 35 and the expanding machine 36 driven is additionally provided on the first pipeline 3 to be used to exchange heat for expanded air
Main heat exchanger 5, enter expanding machine 36 after main heat exchanger 5 by the expanded air of the first supercharger 34, on the first pipeline 3
The second supercharging for compressing into the gas of the first pipeline 3 is additionally provided between air cleaning unit and the first cooler 33
Machine 32.
Booster expansion machine air supply system provided by the invention, compared with prior art, by setting on the first pipeline 3
It is right to enter the first supercharger 34 that expanding machine 36 drives for two superchargers 32, the gas compression that will be filtered from air filter equipment after cooling
Enter expanding machine 36 afterwards, increase machine 34 using first after the supercharging of the second supercharger 32, pressure liter before 36 machine of expanding machine
Height, refrigerating capacity can greatly increase, while swell increment can reduce, and after swell increment reduces, 36 root diameter of expanding machine can subtract accordingly
It is small, so as to improve rotating speed.The refrigeration effect of expanding machine 36 will highlight in this way., it is corresponding after the reduction of 36 rotor of expanding machine
Cost can also substantially reduce, and more energy saving.After swell increment reduces, gas, which enters on fractionating column, interferes more rectifying after tower 11
It is small, therefore extra gas will not be generated, it does not need to bleed off the tolerance that expanding machine 36 comes out, due to the tolerance of the first pipeline 3
It will not increase, then the surplus air of air cleaning unit filtering can pass through the second gas circuit and enter lower tower, and the processing tolerance of lower tower is more
Greatly, gas extraction rate can greatly improve.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula is additionally provided with bypass flow path 31 on the first pipeline 3, and the arrival end of bypass flow path 31 is located at the front side of 32 arrival end of supercharger, other
The port of export on through-flow road 31 is located at the rear side of 32 port of export of supercharger；Bypass flow path 31 is equipped with control valve.Bypass flow path 31
Supercharger 32 is arranged in parallel on the first pipeline 3, and setting bypass flow path 31 can adjust 32 front end pipeline of supercharger and rear end pipe
The pressure difference value on road, setting control valve facilitate expanding machine 36 and supercharging convenient for controlling the uninterrupted of bypass flow path 31
Unlatching between machine 32 will not influence each other, and during startup, first open expanding machine 36, and control valve is opened maximum, is then turned on increasing
Press 32, then turns down or closes control valve, prevents supercharger 32 from first starting and generates damage to expanding machine 36.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, control valve are pneumatic diaphragm control valve.Easy to use, degree of regulation is high.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, the first supercharger 34 include the compression impeller for compressing air inlet, and expanding machine 36 includes being used for and driving the swollen of compression impeller
Swollen machine impeller.By in compression impeller (or compressor drum) compressed air, then cooling down, expanding machine impeller expanded air, from
And realize reducing temperature twice, temperature is lower.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, expanding machine impeller is coaxially fixed with compression impeller or expanding machine impeller is connect with compression impeller by drive mechanism.Transmission knot
Structure can be gear drive or belt wheel transmission etc..
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula enters expanding machine 36 by the expanded air of the first supercharger 34 behind the middle and lower part of main heat exchanger 5.Pass through main heat exchanger
Compressed air after 5 pairs of coolings carries out heat exchange again, reflux can be utilized to recycle cold.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, air cleaning unit are molecular sieve 2 or seperation film.Using molecular sieve 2 or membrane separation technique (i.e. using seperation film by impurity mistake
Filter) can the contaminant filter in air, remaining elementary gas be facilitated and be detached.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, the gas in the second pipeline 4 enter tower under fractionating column after main heat exchanger 5.Gas in optional second pipeline 4 passes through
Out enter tower under fractionating column behind 5 bottom of main heat exchanger, heat exchange can be carried out using reflux by main heat exchanger 5.First pipe
For 3 and second pipeline 4 of road by main heat exchanger 5, main heat exchanger 5 herein can be that same heat transmission equipment exchanges heat, and also may be used
To be that different heat transmission equipments exchange heat with other equipment.
Further, referring to Fig. 1, a kind of specific embodiment party as booster expansion machine air supply system provided by the invention
Formula, supercharger 32 are air compressor.Air compressor is driven by motor or oil machine drives or driven indirectly by drive apparatus
It is dynamic.
The present invention also provides a kind of air separation plants.Referring to Fig. 1, the air separation plant includes fractionating column 1 and any one
Above-mentioned booster expansion machine air supply system.Fractionating column 1 is including tower 12 under tower 11, fractionating column on fractionating column and is arranged on fractionating column
Main condenser 13 under tower 11 and fractionating column between tower 12.Fractionating column 1 can be conventional air separation column.
Air separation plant provided by the invention employs the booster expansion machine air supply system, by being set on the first pipeline 3
Second supercharger 32, the gas compression that will be filtered from air filter equipment enter the first supercharger 34 that expanding machine 36 drives after cooling
Subsequently into expanding machine 36, increase machine 34 using first after the supercharging of the second supercharger 32, pressure before 36 machine of expanding machine
Raising, refrigerating capacity can greatly increase, while swell increment can reduce, and after swell increment reduces, 36 root diameter of expanding machine can be corresponding
Reduce, so as to improve rotating speed.The refrigeration effect of expanding machine 36 will highlight in this way., it is corresponding after the reduction of 36 rotor of expanding machine
Cost can also substantially reduce, and more energy saving.After swell increment reduces, gas, which enters on fractionating column, interferes rectifying after tower 11
Smaller, therefore extra gas will not be generated, it does not need to bleed off the tolerance that expanding machine 36 comes out, due to the gas of the first pipeline 3
Amount will not increase, then the surplus air of air cleaning unit filtering can pass through the second gas circuit and enter lower tower, the processing tolerance of lower tower
Bigger, gas extraction rate can greatly improve.
As the specific embodiment of the present invention, (5 expanded air of the first main heat exchanger leads to by taking 15000 oxygen processed as an example
Road design pressure is 0.9MPa)：It is all the way oil-free referring to Fig. 1, being two-way air inlet on the first pipeline 3 of 32 import of supercharger
Dry supercharger 32, (boost pressure 0.2MPa, tolerance 13000Nm3/h, inlet pressure are 0.4MPa~0.49MPa, are gone out
Mouth pressure is 0.6MPa~0.69MPa), another way is bypass flow path 31, installs pneumatic diaphragm control valve.Design increases without oil drying
32 aftercooler of press.32 lubricating oil system of supercharger, blanket gas system and oil pressure, axle temperature, rotating speed interlock system are wanted by technique
Ask configuration.
Before starting expanding machine 36, after the pneumatic diaphragm control valve of standard-sized sheet bypass flow path 31, expanding machine 36 to start, control
16000 revs/min, restart no oil drying supercharger 32,32 stabilization of speed of supercharger is gradually turned down to after 6000 revs/min
The pneumatic diaphragm control valve of bypass flow path 31, pressure rises to 0.68MPa by 0.48MPa before supercharger 32, is pressed after supercharger 32
Power rises to 0.88MPa by 0.68MPa, is adjusted with the pneumatic diaphragm control valve of bypass flow path 31 without 32 front end of oil drying supercharger
With the pressure differential of rear end, rotating speed.Due to pressure rise 0.2MPa before 36 machine of expanding machine, refrigerating capacity increases more than 15%, expansion
Amount can also reduce by 15%.After swell increment reduces, 36 rotor of expanding machine (i.e. expanding machine impeller 342) diameter reduces 5%, and highest turns
Speed can increase by 10%.The refrigeration effect of supercharging high-speed and high-efficiency expanding machine 36 in this way will highlight.Meanwhile swell increment can also drop
Low 15%, smaller is interfered 11 rectifying of tower on oxygen fractionating column processed, and lower tower processes tolerance bigger, and oxygen extraction rate meeting higher increases
Oxygen output is 300Nm3/h, goes out the Argon fraction of upper tower and also can more stablize, Argon recovery rate can increase by 10%.
As the specific embodiment of the present invention, (5 expanded air of the first main heat exchanger leads to by taking 35000 oxygen processed as an example
Road design pressure is 1.8MPa)：Referring to Fig. 1, for two-way air inlet on the first pipeline 3 of transformation 32 import of supercharger, all the way for
Without oil drying supercharger 32, (boost pressure 0.6MPa, tolerance 30000Nm3/h, inlet pressure for 0.4MPa~
0.49MPa, outlet pressure are 1.0MPa~1.09MPa), another way is bypass flow path 31, installs pneumatic diaphragm control valve.Design
32 aftercooler of supercharger.32 lubricating oil system of supercharger, blanket gas system and oil pressure, axle temperature, rotating speed interlock system press technique
It is required that configuration.
Before starting expanding machine 36, after the pneumatic diaphragm control valve of standard-sized sheet bypass flow path 31, expanding machine 36 to start, control
20000 revs/min, restart no oil drying supercharger 32,32 stabilization of speed of supercharger is gradually turned down to after 6000 revs/min
The pneumatic diaphragm control valve of bypass flow path 31, pressure rises to 1.0MPa by 0.4MPa before supercharger 32, pressure after supercharger 32
1.2MPa is risen to by 0.6MPa, is adjusted with 31 pneumatic diaphragm control valve of bypass flow path without 32 rotating speed of oil drying supercharger.Due to
Pressure rise 0.6MPa before 36 machine of expanding machine, refrigerating capacity increase more than 45%, and swell increment can also reduce by 45%.Swell increment drops
After low, 36 root diameter of expanding machine reduces 25%, and maximum speed can increase by 50%.It is pressurized high-speed and high-efficiency expanding machine 36 in this way
Refrigeration effect will highlight.Meanwhile swell increment can also reduce by 45%, and smaller is interfered to 11 rectifying of tower on oxygen fractionating column processed, under
Tower processes tolerance bigger, and oxygen extraction rate meeting higher, increase oxygen output is 3000Nm3/h, and the Argon fraction for going out upper tower also can be more
Add stabilization, Argon recovery rate can increase by 30%.
Installation method：
First pipeline 3 is set as two-way air inlet by the first step；
Second step is all the way no oil drying supercharger 32；
Third step, another way are bypass flow path 31, install pneumatic diaphragm control valve；
4th step, first cooler 33 of the installation without station after oil drying supercharger 32；It is laggard that two-way air inlet merges pipeline
Enter the first cooler 33；
5th step, without 32 lubricating oil system of oil drying supercharger, blanket gas system and oil pressure, axle temperature, rotating speed interlock system
It is configured by technological requirement；
6th step before starting expanding machine 36,31 pneumatic diaphragm control valve of standard-sized sheet bypass flow path, after the startup of expanding machine 36
(can select control at 20000 revs/min), restarts no oil drying supercharger 32,32 stabilization of speed of supercharger is (to 20000
Rev/min) after, the pneumatic diaphragm control valve of bypass flow path 31 is gradually turned down, pressure is risen to by 0.48MPa before supercharger 32
0.68MPa, pressure rises to 0.88MPa by 0.68MPa after supercharger 32, pneumatic diaphragm control valve and increasing with bypass flow path 31
32 rotating speed of press adjusts the pressure of 32 rear end pipeline of supercharger.Supercharger 32 can be driven by motor or motor
Speed reducer is connected, speed reducer drives the shaft of supercharger 32.
Advantageous effect：After 15000 oxygen swell incremenies processed reduce, 36 root diameter of expanding machine reduces 5%, and maximum speed can increase
Add 10%.The refrigeration effect of supercharging high-speed and high-efficiency expanding machine 36 in this way will highlight.(after 35000 oxygen swell incremenies processed reduce, expansion
36 root diameter of machine reduces 25%, and maximum speed can increase by 50%.) it is pressurized the refrigeration effect of high-speed and high-efficiency expanding machine 36 in this way
It will highlight.Meanwhile swell increment can also reduce by 15%~45%, and smaller, lower tower are interfered to 11 rectifying of tower on oxygen fractionating column processed
Tolerance bigger is processed, oxygen extraction rate can higher.The Argon fraction of upper tower also can more be stablized.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. booster expansion machine air supply system, for being supplied to fractionating column, including being used for the air cleaning unit of air filtering, being used for
Connect the first pipeline of the air cleaning unit and tower on fractionating column and for connecting the air cleaning unit and fractionation
Second pipeline of tower under tower, it is cold by being equipped with first tower on the entrance to fractionating column of the first pipeline successively on first pipeline
But the first supercharger, the second cooler and the expanding machine that device, expanding machine drive are additionally provided on first pipeline to be used for as expansion
The main heat exchanger of air heat-exchange enters expanding machine by the expanded air of the first supercharger after the main heat exchanger, special
Sign is：Be additionally provided between the air cleaning unit and first cooler on first pipeline for compress into
Enter the second supercharger of the gas of the first pipeline.
2. booster expansion machine air supply system as described in claim 1, it is characterised in that：Bypass is additionally provided on first pipeline
Flow path, the arrival end of the bypass flow path are located at the front side of the supercharger arrival end, and the port of export of the bypass flow path is located at
The rear side of the supercharger port of export；The bypass flow path is equipped with control valve.
3. booster expansion machine air supply system as claimed in claim 2, it is characterised in that：The control valve is air bladder tune
Save valve.
4. booster expansion machine air supply system as described in claim 1, it is characterised in that：First supercharger includes pressing
The compression impeller of gas is retracted, the expanding machine includes the expanding machine impeller for being used for and driving the compression impeller.
5. booster expansion machine air supply system as claimed in claim 4, it is characterised in that：The expanding machine impeller and compression impeller
Coaxial fixed or described expanding machine impeller is connect with compression impeller by drive mechanism.
6. booster expansion machine air supply system as claimed in claim 5, it is characterised in that：By the expansion of first supercharger
Air enters the expanding machine behind the middle and lower part of the main heat exchanger.
7. booster expansion machine air supply system as described in claim 1, it is characterised in that：The air cleaning unit is molecular sieve
Or seperation film.
8. booster expansion machine air supply system as claimed in claim 7, it is characterised in that：Gas in second pipeline passes through
Enter tower under fractionating column after the main heat exchanger.
9. booster expansion machine air supply system as described in claim 1, it is characterised in that：The supercharger is air compressor.
10. air separation plant, including fractionating column, it is characterised in that：Further include the booster expansion machine gas supply system described in 1-9 any one
System.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190863.8A CN108240734B (en) | 2018-03-08 | 2018-03-08 | Air supply system of booster expander and air separation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190863.8A CN108240734B (en) | 2018-03-08 | 2018-03-08 | Air supply system of booster expander and air separation equipment |
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| CN108240734B CN108240734B (en) | 2024-03-26 |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050126221A1 (en) * | 2003-12-10 | 2005-06-16 | Bao Ha | Process and apparatus for the separation of air by cryogenic distillation |
| CN1865822A (en) * | 2006-04-29 | 2006-11-22 | 四川空分设备(集团)有限责任公司 | Air separating device and method therefor |
| US20090120129A1 (en) * | 2007-11-14 | 2009-05-14 | Henry Edward Howard | Cryogenic variable liquid production method |
| CN201377961Y (en) * | 2008-09-09 | 2010-01-06 | 苏州制氧机有限责任公司 | Multi-operating mode air separation equipment |
| CN102706098A (en) * | 2012-05-21 | 2012-10-03 | 鞍钢股份有限公司 | Hot start method of booster expander |
| EP2520886A1 (en) * | 2011-05-05 | 2012-11-07 | Linde AG | Method and device for creating gaseous oxygen pressurised product by the cryogenic decomposition of air |
| CN104390427A (en) * | 2014-10-21 | 2015-03-04 | 杭州福斯达实业集团有限公司 | High-temperature and low-temperature expansion energy-saving nitrogen production device and nitrogen production method |
| US20160025408A1 (en) * | 2014-07-28 | 2016-01-28 | Zhengrong Xu | Air separation method and apparatus |
| CN105318662A (en) * | 2014-07-09 | 2016-02-10 | 马宗刚 | Industrialized air separation oxygen generation system |
| CN105928321A (en) * | 2016-06-17 | 2016-09-07 | 全球能源互联网研究院 | Supercharge type cryogenic liquefied air energy storage system |
| CN106338182A (en) * | 2016-08-25 | 2017-01-18 | 重庆朝阳气体有限公司 | Energy-saving control method for air separating system |
| CN106415175A (en) * | 2014-06-02 | 2017-02-15 | 普莱克斯技术有限公司 | Air separation system and method |
| CN206176890U (en) * | 2016-08-19 | 2017-05-17 | 浙江智海化工设备工程有限公司 | Compression air separation device in low energy consumption |
| CN208124718U (en) * | 2018-03-08 | 2018-11-20 | 李佳晨 | Booster expansion machine air supply system and air separation plant |
-
2018
- 2018-03-08 CN CN201810190863.8A patent/CN108240734B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050126221A1 (en) * | 2003-12-10 | 2005-06-16 | Bao Ha | Process and apparatus for the separation of air by cryogenic distillation |
| CN1865822A (en) * | 2006-04-29 | 2006-11-22 | 四川空分设备(集团)有限责任公司 | Air separating device and method therefor |
| US20090120129A1 (en) * | 2007-11-14 | 2009-05-14 | Henry Edward Howard | Cryogenic variable liquid production method |
| CN201377961Y (en) * | 2008-09-09 | 2010-01-06 | 苏州制氧机有限责任公司 | Multi-operating mode air separation equipment |
| EP2520886A1 (en) * | 2011-05-05 | 2012-11-07 | Linde AG | Method and device for creating gaseous oxygen pressurised product by the cryogenic decomposition of air |
| CN102706098A (en) * | 2012-05-21 | 2012-10-03 | 鞍钢股份有限公司 | Hot start method of booster expander |
| CN106415175A (en) * | 2014-06-02 | 2017-02-15 | 普莱克斯技术有限公司 | Air separation system and method |
| CN105318662A (en) * | 2014-07-09 | 2016-02-10 | 马宗刚 | Industrialized air separation oxygen generation system |
| US20160025408A1 (en) * | 2014-07-28 | 2016-01-28 | Zhengrong Xu | Air separation method and apparatus |
| CN104390427A (en) * | 2014-10-21 | 2015-03-04 | 杭州福斯达实业集团有限公司 | High-temperature and low-temperature expansion energy-saving nitrogen production device and nitrogen production method |
| CN105928321A (en) * | 2016-06-17 | 2016-09-07 | 全球能源互联网研究院 | Supercharge type cryogenic liquefied air energy storage system |
| CN206176890U (en) * | 2016-08-19 | 2017-05-17 | 浙江智海化工设备工程有限公司 | Compression air separation device in low energy consumption |
| CN106338182A (en) * | 2016-08-25 | 2017-01-18 | 重庆朝阳气体有限公司 | Energy-saving control method for air separating system |
| CN208124718U (en) * | 2018-03-08 | 2018-11-20 | 李佳晨 | Booster expansion machine air supply system and air separation plant |
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|---|---|
| CN108240734B (en) | 2024-03-26 |
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