CN201221888Y - Operating condition-variable upper tower with argon - Google Patents
Operating condition-variable upper tower with argon Download PDFInfo
- Publication number
- CN201221888Y CN201221888Y CNU2008201140610U CN200820114061U CN201221888Y CN 201221888 Y CN201221888 Y CN 201221888Y CN U2008201140610 U CNU2008201140610 U CN U2008201140610U CN 200820114061 U CN200820114061 U CN 200820114061U CN 201221888 Y CN201221888 Y CN 201221888Y
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- Prior art keywords
- tower
- argon
- charging aperture
- liquid
- feed mouth
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- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
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- 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
- F25J3/04406—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 using a dual pressure main column system
- F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
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- 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
- F25J3/04812—Different modes, i.e. "runs" of operation
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- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/92—Details relating to the feed point
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- 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
-
- 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
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 utility model relates to an air separation device, and in particular relates to an argon work-condition-variable upper tower. A liquid air feeding port and an inflation air feeding port are added on the body of the upper tower, wherein, the liquid air feeding port is arranged between the third section of the stuffing and the fourth section of the stuffing inside the tower, and the inflation air feeding port is arranged between the fourth section of the stuffing and the fifth section of the stuffing inside the tower. The tower has the advantages that: (1) with the added feeding ports, and when the argon is not extracted, the added feeding ports are used, so that the argon-rich area is shifted up, thereby improving the oxygen extraction rate by 2 percent to 5 percent to reach 95 percent to 98 percent; (2) since a group of liquid air and inflation air feeding ports are added, and when the work conditions are changed, i.e. the work condition that the argon is not extracted is switched to the work condition that the argon is extracted only by closing the original liquid air and inflation air feeding ports and using the added liquid air and inflation air feeding ports, thereby saving the modification cost of the system and reducing the production cost.
Description
Technical field
The present invention relates to air-separating plant, be specifically related to tower on a kind of band argon variable working condition.
Background technology
Produce in the flow process of air products in low temperature process, fractionating column is a core component wherein, and the fractionating column king-tower is made up of Shang Ta, following tower.In the fractionating column king-tower, the cut of last tower is imported and exported at most, designs the most complicatedly, and the distribution of theoretical tray has the greatest impact to the oxygen recovery rate.Some producers wouldn't establish ar system for the consideration that reduces cost, and take out mouth but require to reserve argon.So that can directly increase ar system in the future, and needn't transform tower.In order to ensure future ar system can normally move, when generally doing flow process and calculating, carry out in two steps: one, by extract the argon operating mode determine on the distribution of tower packing; Two, check the recovery rate of this filler distribution oxygen when not extracting argon.When not extracting argon, existing go up tower oxygen extraction ratio be the highest when not extracting argon only can reach 93%, oxygen extraction ratio has reduced by 3%～7% when extracting argon, has reduced production efficiency; In addition, promptly change into when extracting argon changing operating mode by not extracting argon, though needn't transform tower, but still need the increase ar system, increase system cost, thereby increased manufacturing cost.
Summary of the invention
The objective of the invention is at the existing in prior technology deficiency, provide a kind of on the band argon variable working condition that guarantees the higher oxygen recovery rate under the various operating modes tower.
The present invention is achieved in that described top of going up tower is provided with the nitrogen product outlet, five sections fillers have from top to bottom distributed in the tower, on body of the tower, from top to bottom, be provided with the liquid nitrogen charging aperture corresponding to the position on first section filler in the tower, be provided with dirty nitrogen outlet corresponding to the position between first section and the second section filler in the tower, be provided with the liquid air feed mouth corresponding to the position between second section and the 3rd section filler in the tower, under the 3rd section filler in the tower, be provided with liquia air steam feed mouth and expanded air charging aperture on the 4th section filler, described liquia air steam is obtained after the main condenser evaporimeter vaporization of crude argon column by liquia air, under the 4th section filler in the tower, be provided with outlet of gas argon cut and liquid argon cut charging aperture on the 5th section filler, corresponding to being provided with the oxygen product outlet under the 5th section filler, it is characterized in that: the described tower of going up also has additional a liquid air feed mouth and an expanded air charging aperture on body of the tower, wherein, newly-increased liquid air feed mouth is arranged on corresponding under the 3rd section filler in the tower, position on the 4th section filler, newly-increased expanded air charging aperture are arranged on corresponding under the 4th section filler in the tower, position on the 5th section filler.
In the annular extent of aforesaid newly-increased liquid air feed mouth 2.050-4.100 rice on body of the tower, below original liquid air feed mouth; In the annular extent of newly-increased expanded air charging aperture 2.050-4.100 rice on body of the tower, below original expanded air charging aperture.
Aforesaid newly-increased liquid air feed mouth is on the circumference at 3.075 meters on the body of the tower, below original liquid air feed mouth, and newly-increased expanded air charging aperture is on the circumference at 3.690 meters on the body of the tower, below original expanded air charging aperture.
Aforesaid newly-increased liquid air feed mouth is at 3.075 meters on the body of the tower, under original liquid air feed mouth, and newly-increased expanded air charging aperture is at 3.690 meters on the body of the tower, under original expanded air charging aperture.
Beneficial effect of the present invention is:
(1), when not extracting argon, uses liquia air and the expanded air charging aperture newly established by setting up one group of liquia air and expanded air charging aperture, make and move in the rich argon district, utilize the rectifying potentiality of last tower, made oxygen extraction ratio improve 2%-5%, reached 95%-98%;
(2) owing to increased by one group of liquia air and expanded air charging aperture, promptly change into when extracting argon changing operating mode by not extracting argon, the tower of going up of the present invention only need seal original liquia air and expanded air charging aperture, use newly-increased liquia air and expanded air charging aperture to get final product, save the cost of modernization system, reduced production cost.
Description of drawings
Fig. 1 is the structural representation of tower on the band argon variable working condition provided by the invention,
Fig. 2 is a structural representation of using fractionating column in the KDON12000/12000 air separation unit of the present invention,
Fig. 3 uses KDON12000/12000 air separation unit of the present invention tower oxygen, nitrogen, argon component distribution map on being with under the argon operating mode,
Fig. 4 be use KDON12000/12000 air separation unit of the present invention check be not with when adopting former charging aperture under the argon operating mode on tower oxygen, nitrogen, argon component distribution map,
Fig. 5 be use KDON12000/12000 air separation unit of the present invention check be not with when adopting newly-increased charging aperture under the argon operating mode on tower oxygen, nitrogen, argon component distribution map,
Among the figure: 1. go up tower, 2. nitrogen product outlet, 3. liquid nitrogen charging aperture, 4. dirty nitrogen (useless nitrogen) outlet, 5. liquid air feed mouth, 6. liquia air steam feed mouth, 7. expanded air charging aperture, 8. gas argon cut outlet (reserving the argon tap), 9. liquid argon cut charging aperture, 10. oxygen product outlet, 11. dirty liquid oxygen, 12. rising oxygen steam, 13. liquid air feed mouths, 14. expanded air charging aperture, 15. following tower, 16. main condenser evaporimeters, 17. crude argon columns, 18. the main condenser evaporimeter, 19. decompressors.
The specific embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is further described below:
As shown in Figure 1, the described tower 1 of going up is applied in the KDON12000/12000 air separation unit, and the top of last tower 1 is provided with nitrogen product outlet 2; The five sections fillers that from top to bottom distributed in the tower on body of the tower, from top to bottom, are provided with liquid nitrogen charging aperture 3 corresponding to the position on first section filler in the tower; Be provided with dirty nitrogen outlet 4 corresponding to the position between first section and the second section filler in the tower; Be provided with liquid air feed mouth 5 corresponding to the position between second section and the 3rd section filler in the tower; Corresponding under the 3rd section filler in the tower, be provided with liquia air steam feed mouth 6, liquid air feed mouth 13 and expanded air charging aperture 7 on the 4th section filler, in the annular extent of liquid air feed mouth 13 2.050-4.100 rice below liquid air feed mouth 5, as on the annular circumferential at 3.075 meters below the liquid air feed mouth 5, considering the space layout of equipment, is the best with 3.075 meters under liquid air feed mouth 5; Corresponding under the 4th section filler in the tower, be provided with expanded air import 14, the outlet 8 of gas argon cut and liquid argon cut charging aperture 9 on the 5th section filler, in the annular extent of expanded air charging aperture 14 2.050-4.100 rice below expanded air charging aperture 7, as on the annular circumferential at 3.690 meters below the expanded air charging aperture 7, considering the space layout of equipment, is the best with 3.690 meters under expanded air charging aperture 7; Corresponding to being provided with oxygen product outlet 10 under the 5th section filler in the tower.
Five sections fillers are used for rectifying among the figure, for uprising gas and dirty liquid carry out the caloic exchange, obtain highly purified certain component.
As shown in Figure 2, tower 1 has tower 15 in fractionation, is provided with main condenser evaporimeter 16 in the following tower 15.Dirty liquid oxygen 11 flows into tower 15 down from last tower 1, and rising oxygen steam 12 rises up into tower 1 from following tower 15.Following tower 15 can rectifying 99.999% nitrogen and the oxygen enriched liquid air that oxygen content is 36%-38%, the exchange heat of the liquid oxygen of the last tower 1 of main condenser evaporimeter 16 realizations and the nitrogen of following tower 15, crude argon column 17 is in order to remove the oxygen in the crude argon, the main condenser evaporimeter 18 of crude argon column 17 is in order to realizing the exchange heat of crude argon and liquia air in the crude argon column, the required liquia air steam of tower 1 in the generation.Decompressor 19 provides cold for the fractionating system in the air separation unit (comprising tower 1, following tower 2, crude argon column 17 and pure argon column and various heat exchanger), to replenish the cold damage in the whole rectifying process, wherein said cold is to characterize by a kind of energy of the low object of temperature to the high object transfer of temperature, and cold damage is meant the loss of cold.
When under not being with the argon operating mode, promptly not connecting the argon treatment system, need to reserve argon and take out mouthful (a gas argon cut outlet 8), tower 1 is as follows with the annexation of each charging aperture in this variable working condition this moment: liquia air and receive liquid air feed mouth 13 respectively by the expanded air that decompressor 19 produces, expanded air charging aperture 14 places, simultaneously with liquid air feed mouth 5,7 sealings of expanded air charging aperture, liquia air and expanded air are respectively from liquid air feed mouth 13, expanded air charging aperture 14 enters tower 1, liquid nitrogen charging aperture 3 is communicated with following tower 15 liquid nitrogen outlet, liquia air steam feed mouth 6 is communicated with the liquia air steam output end of crude argon column 17 main condenser evaporimeters 18, gas argon cut outlet 8 is communicated with the argon gas charging aperture of crude argon column 17, and liquid argon cut charging aperture 9 is communicated with the liquid argon gas output of crude argon column 17.
Be separated into the remaining dirty nitrogen of useful nitrogen product and fractionation after the rectifying of liquid nitrogen raw material by last tower 1, both go up tower 1 by nitrogen product outlet 2 and dirty nitrogen (useless nitrogen) outlet 4 outputs respectively; Tower 1 rectifying on phegma in the last tower 1 and all gases (constituent of air that comprises gaseous state, the liquid state) process, obtain the nitrogen of high-purity 99.999% on last tower 1 top, obtain 99.6% liquid oxygen at 1 end of last tower, nitrogen is gone up tower 1 through last tower 1 nitrogen product outlet 2 outputs, liquid oxygen carries out heat exchange with the nitrogen at following tower 15 tops through main condenser evaporimeter 16, obtain oxygen product after the vaporization, go up tower 1 from oxygen product outlet 10 outputs.
When under band argon operating mode, promptly needing to connect the argon treatment system, then liquia air and expanded air charging aperture are received liquid air feed mouth 5, expanded air charging aperture 7 places, liquid air feed mouth 13,14 sealings of expanded air charging aperture, liquia air and expanded air enter tower 1 from liquid air feed mouth 5, expanded air charging aperture 7 respectively, other annexations of last tower 1 are constant, and the course of work of last tower 1 is also with aforementioned similar.
Shown in Fig. 3-5, Fig. 3, operating mode shown in Figure 5 and Fig. 4 mutually shown in operating mode compare, gas argon cut outlet 8 following argon component concentrating degree are lower, oxygen argon rectification effect is good, the oxygen extraction ratio height.The oxygen extraction ratio of three kinds of operating modes sees Table 1.Oxygen extraction ratio under the operating mode shown in Figure 5 is compared with the oxygen extraction ratio under 4 operating modes shown in the figure, and the former oxygen extraction ratio has improved 4.91%.
Tower oxygen material balance computational chart on the table 1
| Figure | PA2 (20.95％O 2) | LA (38.12％O 2) | LN (6.82e-06 O 2) | GO (99.6％O2) | Oxygen extraction ratio |
| Fig. 3 | 6300 | 28850 | 22900 | 12348 | 99.89％ |
| Fig. 4 | 6300 | 28900 | 23500 | 11514 | 92.99％ |
| Fig. 5 | 6300 | 29500 | 23500 | 12130 | 97.9％ |
Claims (4)
1. be with tower on the argon variable working condition for one kind, described top of going up tower (1) is provided with nitrogen product outlet (2), five sections fillers have from top to bottom distributed in the tower, on body of the tower, from top to bottom, be provided with liquid nitrogen charging aperture (3) corresponding to the position on first section filler in the tower, be provided with dirty nitrogen outlet (4) corresponding to the position between first section and the second section filler in the tower, be provided with liquid air feed mouth (5) corresponding to the position between second section and the 3rd section filler in the tower, under the 3rd section filler in the tower, be provided with liquia air steam feed mouth (6) and expanded air charging aperture (7) on the 4th section filler, under the 4th section filler in the tower, be provided with the outlet of gas argon cut (8) and liquid argon cut charging aperture (9) on the 5th section filler, corresponding to being provided with oxygen product outlet (10) under the 5th section filler, it is characterized in that: the described tower (1) of going up also is provided with a liquid air feed mouth (13) and an expanded air charging aperture (14) on body of the tower, wherein, liquid air feed mouth (13) is arranged on corresponding under the 3rd section filler in the tower, position on the 4th section filler, expanded air charging aperture (14) are arranged on corresponding under the 4th section filler in the tower, position on the 5th section filler.
2. tower on the band argon variable working condition according to claim 1 is characterized in that: liquid air feed mouth (13) is on body of the tower, in the annular extent of liquid air feed mouth (5) below 2.050-4.100 rice; Expanded air charging aperture (14) is on body of the tower, in the annular extent of expanded air charging aperture (7) below 2.050-4.100 rice.
3. tower on the band argon variable working condition according to claim 2, it is characterized in that: liquid air feed mouth (13) is on the circumference at 3.075 meters on the body of the tower, below the liquid air feed mouth (5), and expanded air charging aperture (14) is on the circumference at 3.690 meters on the body of the tower, below the expanded air charging aperture (7).
4. according to tower on claim 2 or the 3 described band argon variable working conditions, it is characterized in that: liquid air feed mouth (13) is at 3.075 meters on the body of the tower, under the liquid air feed mouth (5), and expanded air charging aperture (14) is at 3.690 meters on the body of the tower, under the expanded air charging aperture (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201140610U CN201221888Y (en) | 2008-05-06 | 2008-05-06 | Operating condition-variable upper tower with argon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201140610U CN201221888Y (en) | 2008-05-06 | 2008-05-06 | Operating condition-variable upper tower with argon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221888Y true CN201221888Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201140610U Expired - Lifetime CN201221888Y (en) | 2008-05-06 | 2008-05-06 | Operating condition-variable upper tower with argon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992923A (en) * | 2014-02-14 | 2016-10-05 | 乔治洛德方法研究和开发液化空气有限公司 | Device and method for separating air by cryogenic distillation |
-
2008
- 2008-05-06 CN CNU2008201140610U patent/CN201221888Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992923A (en) * | 2014-02-14 | 2016-10-05 | 乔治洛德方法研究和开发液化空气有限公司 | Device and method for separating air by cryogenic distillation |
| CN105992923B (en) * | 2014-02-14 | 2019-07-02 | 乔治洛德方法研究和开发液化空气有限公司 | Device and method for separating air by low temperature distillation |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
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| CX01 | Expiry of patent term |