CN201367351Y - Device for preparing high purity oxygen - Google Patents
Device for preparing high purity oxygen Download PDFInfo
- Publication number
- CN201367351Y CN201367351Y CN 200920079602 CN200920079602U CN201367351Y CN 201367351 Y CN201367351 Y CN 201367351Y CN 200920079602 CN200920079602 CN 200920079602 CN 200920079602 U CN200920079602 U CN 200920079602U CN 201367351 Y CN201367351 Y CN 201367351Y
- Authority
- CN
- China
- Prior art keywords
- oxygen
- liquid air
- pipeline
- high purity
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
- F25J3/04406—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
- F25J3/0443—A main column system not otherwise provided, e.g. a modified double column flowsheet
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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
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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
-
- 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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
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 a device for preparing high purity oxygen, which comprises a pipeline for transporting purified air, a heat exchanger, a pressure rectifying column, a liquid air evaporator, an oxygen column and an oxygen evaporator arranged at the lower part of the oxygen column. The rectifying column is connected with the liquid air evaporator through a liquid air extracting pipeline arranged at the middle part; the sealing head of the liquid air evaporator is connected with a raw material pipeline arranged at the upper part of the oxygen column; the evaporating end of the liquid air evaporator is connected with a thermal resource inputting pipeline of the oxygen evaporator; the condensing end of the oxygen evaporator is connected with the raw material pipeline; and a high-purity liquid oxygen extracting pipeline is connected with the bottom part of the oxygen column. By adopting the device, a user's demand for preparing high purity oxygen can be satisfied without the additional increase of the height of a cold box or the addition of more expensive devices. The device has the advantages of simple implementation, good effect and low energy consumption, has the characteristics of economic benefit maximization and increased investment minimization, and has great significance. According to the evaluation, the energy consumption of the high-purity liquid oxygen (byproduct) of a typical high nitrogen device can be reduced by 50%, and the competitive advantage is very strong.
Description
Technical field
The utility model relates to a kind of high purity oxygen device for making, is particularly useful for high nitrogen device or does not produce high purity oxygen with the air separation facility of ar system.
Background technology
Develop rapidly along with emerging microelectronics and opto-electronics, the improvement of chip technology, need a large amount of high pure nitrogens and small portion high purity oxygen, produce, generally can from band argon space division system, extract and adopt ordinary method to carry out high purity oxygen, but for small-sized client, special such equipment, not only cost height, and the device complexity bought, reliability also reduces, and energy consumption is also higher.If select not produce oxygen, then need outside the pressure rectifying tower, to be provided with one again and remove CO in the liquid air with the air separation plant of ar system
2, heavy constituent such as hydrocarbon tower, and then enter high-purity oxygen column rectifying and obtain high purity oxygen, its shortcoming is need increase by one to go heavies column in conventional equipment, has increased the input of equipment, and is very uneconomical.Though can satisfy processing requirement by buying high-purity liquid oxygen, pure oxygen is strong oxidation ignition dope, the transportation cost and the risk of high purity oxygen that surpasses 300km is higher.
The utility model content
The technical problems to be solved in the utility model provides the high purity oxygen device for making that a kind of technology is simple, cost is low, purity meets the demands.
For solving the problems of the technologies described above, a kind of high purity oxygen device for making that the utility model provides comprises the transport pipe that purifies air, interchanger, pressure rectifying tower, oxygen column successively, it is characterized in that: also comprise the liquid air vaporizer, the oxygen column bottom is provided with oxygen evaporator; The liquid air that described pressure rectifying tower middle part is provided with extracts pipeline and is connected with the liquid air vaporizer, the end socket place of liquid air vaporizer is connected with the raw material pipeline on oxygen column top, the evaporation ends of liquid air vaporizer is connected with the thermal source intake line of oxygen evaporator, and the condensation end of oxygen evaporator is connected with described raw material pipeline; The oxygen column bottom is connected with high-purity liquid oxygen introduction pipe.
The nitrogen outlet of described pressure rectifier is connected with interchanger, nitrogen discharge line pipeline successively, and described nitrogen outlet also is connected with the refluxing opening of liquid air vaporizer, pressure rectifier pipeline successively.
The refluxing opening of described nitrogen outlet and liquid air vaporizer, pressure rectifier pipeline successively is connected.
Described liquid air vaporizer is connected with pressure rectifying tower, high purity oxygen vaporizer respectively by pipeline.
The outlet of described oxygen column top gas is connected with interchanger, gas outlet pipe road pipeline successively.
Described liquid air vaporizer is board-like liquid air vaporizer.
Described pressure rectifying tower is a double tower, and the outlet of the low-pressure gas of oxygen column top portion is connected with the last tower pipeline of double tower, last tower the low-pressure gas outlet be connected with interchanger, low-pressure gas discharge line pipeline successively.
The utility model is washed the higher few clean liquid air of heavy constituent that contains of back oxygen level by extracting out from pressure rectifying tower middle part, send to rectifying in high-purity oxygen column and obtain highly purified liquid oxygen, do not need to increase expensive equipment and just can satisfy the requirement that the user produces high purity oxygen.And the clean liquid air that comes out in the pressure rectifying tower, remove small part and directly remove high-purity oxygen column, other major parts are evaporated in the liquid air vaporizer with after the nitrogen heat exchange, introduce then in the oxygen evaporator of high purity oxygen tower bottom, go high-purity oxygen column rectifying after the condensation, thereby realize to reduce the purpose of high-purity oxygen column ice chest height, reduce the cost of investment of high-purity oxygen column and ice chest and cut down the consumption of energy.
Description of drawings
Be illustrated as oxygenerator of the present utility model.
Mark among the figure:
ET401 turbo-expander C1 pressure rectifying tower
E1 interchanger C2 oxygen column
The board-like liquid air vaporizer of E2 K2 oxygen evaporator
The K1 condenser/evaporator
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Embodiment 1
As shown in the figure, it is as follows to adopt oxygenerator of the present utility model to produce the step of high purity oxygen:
A) air through purifying treatment enters interchanger E1 cooling by the transport pipe that purifies air;
B) cooled air is sent into pressure rectifying tower C1 bottom, in the pressure rectifying tower from down and on column plate or filler, carry out heat and mass with top-down liquid; Through rectifying washing, contained heavy constituent such as the CO of liquid air in the pressure rectifying tower
2, CH
4, hydrocarbon etc. is easy to be washed, more up the heavy constituent of liquid air are few more in the column plate.The liquid air of bottom is crossed by interchanger and is entered pressure rectifying tower top condenser/evaporator K1 after cold.
C) by liquid air extract pipeline with the liquid air that heavy constituent content is less and oxygen level is higher at pressure rectifying tower C1 middle part as system oxygen raw material, after throttling, send into board-like liquid air vaporizer E2; From the pressure nitrogen gas that the pressure rectifier is drawn, a part enters board-like liquid air vaporizer E2 and described liquid air heat exchange, is back to then in the pressure rectifying tower.
D) at the end socket place of board-like liquid air vaporizer E2, extracting part is divided the raw material of liquid air as high purity oxygen, and end socket helps valve regulated control as the gas-liquid separation space, sends into high-purity oxygen column C2 rectifying by pipeline; All the other liquid airs and above-mentioned nitrogen are evaporated after the heat exchange of board-like liquid air vaporizer, the thermal source intake line that is communicated with by evaporation ends with the liquid air vaporizer, the oxygen evaporator K2 that sends into the high purity oxygen tower bottom is interior as the evaporation thermal source, again as the raw material of high purity oxygen, send into high-purity oxygen column rectifying after the thermal source condensation by pipeline; In high-purity oxygen column, the light constituent of described raw material is evaporated, and progressively is condensed into high-purity liquid oxygen;
E) the spissated high-purity liquid oxygen of high purity oxygen tower bottom is drawn;
F) low-pressure gas of drawing from the high purity oxygen top of tower enters in the interchanger and is discharged by the low-pressure gas discharge line by re-heat to normal temperature;
G) cold of above-mentioned interchanger and rectifying tower is provided by turbo-expander ET401.
Embodiment 2
The pressure rectifying tower that the foregoing description prepares high purity oxygen is single tower, also can adopt the empty by-product high purity oxygen of dividing of double-column process, its as different from Example 1:
Above-mentioned steps (b): the liquid air of bottom is crossed the last tower that enters double tower after cold by interchanger;
The last tower that the low-pressure gas that above-mentioned steps (f) is drawn from the high purity oxygen top of tower enters double tower carries out rectifying, and the low-pressure gas after the rectifying enters in the interchanger and discharged by re-heat to normal temperature.
The utility model has taked comparatively succinct technology and conventional equipment to solve the difficult problem that high purity oxygen is produced, implements simple, effective, energy consumption is low, has maximization of economic benefit, increases and invest minimized characteristics, meaning is very great, is worthy to be popularized.
With the high nitrogen device of typical photoelectricity industry 1MPaG by-product high purity oxygen is example, adopt the energy consumption of the high-purity liquid oxygen of the present invention to reduce ~ 50%, do not increase the ice chest height, solved high purity nitrogen device liquid nitrogen production surplus, be badly in need of the contradiction of high-purity liquid oxygen.
Need to prove: though the foregoing description has been described structure of the present utility model in detail; but the utility model is not limited to the foregoing description; replacement structure and technical process that every those skilled in the art just can expect without creative work from the foregoing description all belong to protection domain of the present utility model.
Claims (6)
1, a kind of novel high purity oxygen device for making comprises the transport pipe that purifies air, interchanger, pressure rectifying tower, oxygen column successively, it is characterized in that: comprise that also liquid air vaporizer, oxygen evaporator, liquid air extract pipeline; Described oxygen evaporator is arranged on the oxygen column bottom; Described liquid air extracts pipe connection rectifying tower middle part and liquid air vaporizer; The end socket place of liquid air vaporizer is connected with the raw material pipeline on oxygen column top, and the evaporation ends of liquid air vaporizer is connected with the thermal source intake line of oxygen evaporator, and the condensation end of oxygen evaporator is connected with described oxygen column raw material pipeline; The oxygen column bottom is connected with high-purity liquid oxygen introduction pipe.
2, high purity oxygen device for making as claimed in claim 1 is characterized in that, the refluxing opening of the nitrogen outlet of described pressure rectifying tower and liquid air vaporizer, pressure rectifier pipeline successively is connected.
3, high purity oxygen device for making as claimed in claim 1 is characterized in that, described liquid air vaporizer is connected with pressure rectifying, high purity oxygen vaporizer respectively by pipeline.
4, high purity oxygen device for making as claimed in claim 1 is characterized in that, the low-pressure gas outlet at described oxygen column top is connected with interchanger, gas outlet pipe road pipeline successively.
As claim 1,2,3 or 4 described high purity oxygen device for making, it is characterized in that 5, described liquid air vaporizer is board-like liquid air vaporizer.
6, as claim 1,2,3 or 4 described high purity oxygen device for making, it is characterized in that, described pressure rectifying tower is a double tower, the outlet of the low-pressure gas of oxygen column top portion is connected by pipeline with the last tower of double tower, last tower the low-pressure gas outlet be connected with interchanger, low-pressure gas discharge line pipeline successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920079602 CN201367351Y (en) | 2009-03-17 | 2009-03-17 | Device for preparing high purity oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920079602 CN201367351Y (en) | 2009-03-17 | 2009-03-17 | Device for preparing high purity oxygen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201367351Y true CN201367351Y (en) | 2009-12-23 |
Family
ID=41486244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920079602 Expired - Lifetime CN201367351Y (en) | 2009-03-17 | 2009-03-17 | Device for preparing high purity oxygen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201367351Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277981A (en) * | 2013-06-14 | 2013-09-04 | 济钢集团有限公司 | Device and method for increasing nitrogen-to-oxygen ratio of air separation unit |
| 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 |
-
2009
- 2009-03-17 CN CN 200920079602 patent/CN201367351Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277981A (en) * | 2013-06-14 | 2013-09-04 | 济钢集团有限公司 | Device and method for increasing nitrogen-to-oxygen ratio of air separation unit |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |