CN202813976U - Large air separation high-purity oxygen extracting device - Google Patents
Large air separation high-purity oxygen extracting device Download PDFInfo
- Publication number
- CN202813976U CN202813976U CN2012205473239U CN201220547323U CN202813976U CN 202813976 U CN202813976 U CN 202813976U CN 2012205473239 U CN2012205473239 U CN 2012205473239U CN 201220547323 U CN201220547323 U CN 201220547323U CN 202813976 U CN202813976 U CN 202813976U
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- Prior art keywords
- purity oxygen
- tower
- oxygen
- high purity
- air separation
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- Expired - Fee Related
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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
- F25J3/04436—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 at least a triple pressure main column system
- F25J3/04454—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 at least a triple pressure main column system a main column system not otherwise provided, e.g. serially coupling of columns or more than three pressure levels
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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
- F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
- F25J2215/56—Ultra high purity oxygen, i.e. generally more than 99,9% O2
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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
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/50—Separating low boiling, i.e. more volatile components from oxygen, e.g. N2, Ar
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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
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/52—Separating high boiling, i.e. less volatile components from oxygen, e.g. Kr, Xe, Hydrocarbons, Nitrous oxides, O3
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- 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 discloses a large air separation high-purity oxygen extracting device which comprises an air separation main tower providing raw material air. A first high-purity oxygen tower and a second high-purity oxygen tower are sequentially connected with the exterior of the air separation main tower, wherein the first high-purity oxygen tower is used for impurities with liquefying boiling points higher than those of oxygen, and the second high-purity oxygen tower is used for impurities with the liquefying boiling points lower than those of the oxygen. The tower top of the first high-purity oxygen tower is provided with a first condenser, the tower top of the second high-purity oxygen tower is provided with a second condenser, and the tower bottoms are provided with evaporators. The air separation main tower, the first high-purity oxygen tower and the second high-purity oxygen tower are connected through a pipeline. The large air separation high-purity oxygen extracting device has the advantages that total hydrocarbon content of oxygen components after rectification is lower than 1 part per million, content of the impurities such as argon and nitrogen is lower than 5 parts per million, working conditions of rectification are stable, product quality is stable, and obtained oxygen purity can reach 99.999 percent.
Description
Technical field
The utility model relates to a kind of rectifying device, specifically, designs a kind of Large Air Separation Devices high purity oxygen extraction element.
Background technology
High purity oxygen extraction equipment of the prior art is to utilize crude argon one tower liquid argon cut as material liquid, dispose the rectifying column of a cuff evaporimeter, utilize medium pressure nitrogen gas to make thermal source, the liquid argon fraction is constantly evaporated, and so lower boiling argon, nitrogen composition constantly gasify, and get back to crude argon one tower by muffler, the oxygen composition constantly gathers in the liquid phase, purity improves constantly, and finally only obtains 99.99% moderate purity oxygen product, and product quality is extremely unstable.By the product composition is detected, total hydrocarbon content is seriously higher in the product.By the production technology principle analysis, its reason is, rectifying column only is equipped with an evaporimeter, higher boiling composition in the material liquid constantly gathers through distillation, be the immediate cause that causes total hydrocarbon content to exceed standard, and then cause product quality directly to be subjected to the impact of crude argon system production technology and change, in case fluctuation appears in the crude argon column operating mode, the composition of material liquid produces than great fluctuation process, so that unstable product quality.
Summary of the invention
The purpose of this utility model is that the deficiency that overcomes prior art provides a kind of novel large empty minute high purity oxygen extraction element, and its product purity can reach 99.999%.
The utility model is achieved through the following technical solutions:
Described Large Air Separation Devices high purity oxygen extraction element, the main air distillation column that comprises the gas of supplying raw materials, described main air distillation column also is connected with in turn outward: high purity oxygen one tower that is higher than the impurity of oxygen for the liquefaction boiling point reaches high purity oxygen two towers that are lower than the impurity of oxygen for the evaporation boiling point; Described high purity oxygen one column overhead disposes the first condenser, and described high purity oxygen two column overhead dispose the second condenser, dispose evaporimeter at the bottom of the tower; Be connected by pipeline between described main air distillation column, high purity oxygen one tower and high purity oxygen two towers.
In the distillation process, unstripped gas from king-tower the tower by cryogenic pipelines be transported to behind high purity oxygen one tower of being furnished with condenser can by condenser in rectifying column with the liquefaction of the impurity such as high boiling total hydrocarbon, after with gas transport to high purity oxygen two towers.
In high purity oxygen two towers, evaporimeter can utilize medium pressure nitrogen gas to make thermal source, the lower boiling components such as the argon in the liquid, nitrogen are constantly evaporated, gas is discharged by dirty nitrogen pipe, condenser provides continuous rectification required liquid to the continuous condensation of oxygen composition of vaporization, through continuous condensation, evaporation, finally obtain 99.999% the liquid oxygen of high-purity at base of evaporator, then can be disposed to the product storage tank by liquid line.
Simultaneously, described high purity oxygen one tower can also send back described main air distillation column with the impurity that liquefies by pipeline.Be that liquid after high purity oxygen one tower will liquefy is got back to empty minute upper tower through fluid-carrying lines, will only deliver to two towers except oxygen part of total hydrocarbon through liquefaction simultaneously.
Further, the concentration that produces oxygen in the described main air distillation column is 99% and above unstripped gas.In the high purity oxygen preparation process with the oxygen of ordinary purity as unstripped gas, carry out further rectifying and help to obtain high quality of products.Described high purity oxygen two towers are outside equipped with surge tank and choke valve.
The beneficial effects of the utility model are: the first, and high purity oxygen one tower is only up to standard except total hydrocarbon, and the total hydrocarbon content of oxygen component is lower than 1PPm after the rectifying.And operating mode is stable.The second, high purity oxygen two towers reach requirement except impurity such as argon, nitrogen only, and the impurity content such as argon, nitrogen is lower than 5PPm after the rectifying.The rectifying operating mode is stable, constant product quality.To sum up, the gained oxygen purity can reach 99.999%, and satisfying the market is to the demand of high purity oxygen quality.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Reference numeral: 1, main air distillation column; 2, tower on the king-tower; 3, the first condenser; 4, the second condenser; 5, high purity oxygen one tower; 6, evaporimeter; 7, high purity oxygen two towers; 8, surge tank; 9, choke valve.
The specific embodiment
Embodiment 1
With reference to shown in Figure 1, described Large Air Separation Devices high purity oxygen extraction element, the main air distillation column that comprises the gas of supplying raw materials, described main air distillation column also is connected with in turn outward: high purity oxygen one tower that is higher than the impurity of oxygen for the liquefaction boiling point reaches high purity oxygen two towers that are lower than the impurity of oxygen for the evaporation boiling point; Described high purity oxygen one column overhead disposes the first condenser, and described high purity oxygen two column overhead dispose the second condenser, dispose evaporimeter at the bottom of the tower; Be connected by pipeline between described main air distillation column, high purity oxygen one tower and high purity oxygen two towers.
In distillation process, unstripped gas from king-tower the tower by cryogenic pipelines be transported to behind high purity oxygen one tower of being furnished with condenser can by condenser in rectifying column with the liquefaction of the impurity such as high boiling total hydrocarbon, after with gas transport to high purity oxygen two towers.In high purity oxygen two towers, evaporimeter can utilize medium pressure nitrogen gas to make thermal source, the lower boiling components such as the argon in the liquid, nitrogen are constantly evaporated, gas is discharged by dirty nitrogen pipe, condenser provides continuous rectification required liquid to the continuous condensation of oxygen composition of vaporization, through continuous condensation, evaporation, finally obtain 99.999% the liquid oxygen of high-purity at base of evaporator, then can be disposed to the product storage tank by liquid line.
Embodiment 2
Preferably, on the basis of embodiment 1, the concentration that produces oxygen in the described main air distillation column is 99% and above unstripped gas.In the high purity oxygen preparation process with the oxygen of ordinary purity as unstripped gas, carry out further rectifying and help to obtain high quality of products.Described high purity oxygen two towers are outside equipped with surge tank and choke valve.
Main processes is still carried out as described in example 1 above, and in addition, in this example, described high purity oxygen one tower can also send back described main air distillation column with the impurity that liquefies by pipeline when gas is transported to high purity oxygen two tower after unstripped gas is carried out rectifying.Be that liquid after high purity oxygen one tower will liquefy is got back to empty minute upper tower through fluid-carrying lines, will only deliver to two towers except oxygen part of total hydrocarbon through liquefaction simultaneously, simultaneously, surge tank and choke valve can play stabilizing equipment in distillation process, the effect that economizes on resources.
According to the elaboration in the above specification, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the content of mentioning in above-described embodiment is not to be to restriction of the present utility model, and under the prerequisite that does not break away from utility model design of the present utility model, any apparent replacement is all within protection domain of the present utility model.
Claims (3)
1. Large Air Separation Devices high purity oxygen extraction element, the main air distillation column that comprises the gas of supplying raw materials is characterized in that described main air distillation column also is connected with in turn outward: high purity oxygen one tower that is higher than the impurity of oxygen for the liquefaction boiling point reaches high purity oxygen two towers that are lower than the impurity of oxygen for the evaporation boiling point; Described high purity oxygen one column overhead disposes the first condenser, and described high purity oxygen two column overhead dispose the second condenser, dispose evaporimeter at the bottom of the tower; Be connected by pipeline between described main air distillation column, high purity oxygen one tower and high purity oxygen two towers.
2. Large Air Separation Devices high purity oxygen extraction element according to claim 1 is characterized in that: the concentration that produces oxygen in the described main air distillation column is 99% and above unstripped gas.
3. Large Air Separation Devices high purity oxygen extraction element according to claim 1, it is characterized in that: described high purity oxygen two towers are externally connected with surge tank, connect on the used pipeline to be provided with choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205473239U CN202813976U (en) | 2012-10-24 | 2012-10-24 | Large air separation high-purity oxygen extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205473239U CN202813976U (en) | 2012-10-24 | 2012-10-24 | Large air separation high-purity oxygen extracting device |
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| Publication Number | Publication Date |
|---|---|
| CN202813976U true CN202813976U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205473239U Expired - Fee Related CN202813976U (en) | 2012-10-24 | 2012-10-24 | Large air separation high-purity oxygen extracting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202813976U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679333A (en) * | 2016-12-30 | 2017-05-17 | 清远市联升空气液化有限公司 | High-purity oxygen preparation device and method for preparing high-purity oxygen through same |
| CN107726732A (en) * | 2017-10-18 | 2018-02-23 | 上海宝钢气体有限公司 | A kind of method and device for producing high pure oxygen |
| CN108027201A (en) * | 2015-07-31 | 2018-05-11 | 普莱克斯技术有限公司 | For the method and apparatus except argon and recycling argon |
| CN113790576A (en) * | 2021-09-18 | 2021-12-14 | 东台宏仁气体有限公司 | High-purity oxygen purification device and purification method thereof |
-
2012
- 2012-10-24 CN CN2012205473239U patent/CN202813976U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108027201A (en) * | 2015-07-31 | 2018-05-11 | 普莱克斯技术有限公司 | For the method and apparatus except argon and recycling argon |
| CN108027201B (en) * | 2015-07-31 | 2019-12-13 | 普莱克斯技术有限公司 | method and apparatus for argon removal and argon recovery |
| CN106679333A (en) * | 2016-12-30 | 2017-05-17 | 清远市联升空气液化有限公司 | High-purity oxygen preparation device and method for preparing high-purity oxygen through same |
| CN107726732A (en) * | 2017-10-18 | 2018-02-23 | 上海宝钢气体有限公司 | A kind of method and device for producing high pure oxygen |
| CN113790576A (en) * | 2021-09-18 | 2021-12-14 | 东台宏仁气体有限公司 | High-purity oxygen purification device and purification method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20141024 |
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| EXPY | Termination of patent right or utility model |