CN201777881U - Air separation system for oxygen production - Google Patents
Air separation system for oxygen production Download PDFInfo
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- CN201777881U CN201777881U CN2010202448202U CN201020244820U CN201777881U CN 201777881 U CN201777881 U CN 201777881U CN 2010202448202 U CN2010202448202 U CN 2010202448202U CN 201020244820 U CN201020244820 U CN 201020244820U CN 201777881 U CN201777881 U CN 201777881U
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Abstract
The utility model discloses an air separation system for oxygen production, which comprises two sets of air separation devices (1, 2), wherein molecular sieve adsorption and purification are performed by adopting outlet molecular sieves (5, 7) in each set of air separation device, and air pipelines of the outlet molecular sieves (5, 7) of the two sets of air separation devices (1, 2) are connected by adopting a pipeline (3). By adopting the technical scheme, the operation is simplified, and the other set of device can be heated only by opening a control valve of the two molecular sieve connecting pipelines, so various above operations are saved. The resource consumed for restarting the device is saved.
Description
Technical field
The utility model belongs to the technical field of industrial production oxygen generating plant.Specifically, the utility model relates to a kind of air-seperation system that oxygen is produced of making.
Background technology
In the prior art, the system oxygen workshop section of iron and steel enterprise adopts the model of air separation plant to have:
KDONAr10000/10000/300 and KDONAr7000/7000/210.
Adopt molecular sieve adsorption purification, turbine boosting expansion, structured packing and full rectifying hydrogen-free argon producing flow process.
The space division technique flow process:
Raw air is compressed at oilless air compressor＜0.7MPa after air filter is removed koniology and mechanical impurity, and the heat that compression produces is taken away by the watercooler heat exchange water that is cooled, and enters the precooling unit then and carries out precooling, to (2～10) ℃.Separated out at this stage part free-water, enter the molecular sieve purifier (MS1201 or MS1202) that suitching type uses again, hydrocarbon polymers such as airborne residual water vapor, carbonic acid gas, acetylene are adsorbed.Two absorbing cylinders of molecular sieve purifier use by turns, wherein work, another regeneration.Two groups of purifier absorbing cylinders are switched by program controller control timing automatic.
Clean dry air themperature after purifying through purifier rises to～and 15 ℃, be divided into two-way: the empty ice chest that divides of most of air admission, in the mainboard fin heat exchanger with cold air stream (pure oxygen, purity nitrogen, dirty nitrogen, the pressure nitrogen) heat exchange of backflowing, temperature is reduced near liquefaction temperature, again through entering Xia Ta after the throttling of V1 valve.
After the supercharging of another part air admission supercharger, the gas of about 100m3/h is as booster expansion turbine group gas bearing gas, its residual air then enters ice chest, in the mainboard fin heat exchanger with cold air stream (pure oxygen, purity nitrogen, the dirty nitrogen etc.) heat exchange of backflowing cooling after again through in take out V5 valve or the end and take out the V6 valve and extract out and enter the decompressor swell refrigeration, air after the expansion is sent into tower or is entered dirty nitrogen pipeline through V11 valve bypass through the V12 valve, again through discharging ice chest emptying after the main heat exchanger re-heat.
In following tower, air is initially separated into liquid nitrogen and oxygen-enriched liquid air.Rising nitrogen is liquefied with the heat exchange of last tower bottom low pressure liquid oxygen in condenser/evaporator, and liquid oxygen is vaporized simultaneously.Liquid nitrogen is divided into two-way, and one the tunnel enters down tower as tower phegma down through the V4 valve, and throttling enters tower top through the V3 valve again after supercooler and purity nitrogen, dirty nitrogen heat exchange on another road.Oxygen-enriched liquid air in the following tower is extracted out to cross through supercooler and purity nitrogen, dirty nitrogen heat exchange by the bottom and is passed through the throttling of V2 valve again after cold and send into tower as phegma.
The further rectifying of tower on the process obtains the higher nitrogen of purity at last top of tower, obtains oxygen at last tower bottom.Compress and fill or liquefy through sending ice chest after supercooler and the main heat exchanger re-heat after purity nitrogen is extracted out from last top of tower; Dirty nitrogen is extracted out from last tower top through sending ice chest after supercooler and the main heat exchanger re-heat, and wherein a part is as purifier regeneration gas, another part emptying; Oxygen is through sending the ice chest compression and fill or liquefy after the main heat exchanger re-heat, pressure nitrogen is sent ice chest after through the main heat exchanger re-heat.
Owing to all can carry out once big maintenance every year on average, before maintenance, need the air separation plant ice chest is carried out heating of long period to air separation plant.The gas of heating is the dry air after adsorbing through molecular sieve purifier.
Air separation plant will carry out big maintenance after operation for some time, before and after maintenance, need add gentle the purging to equipment.Purpose is to remove moisture, carbonic acid gas, acetylene and other impurity that is frozen under the low-temperature condition in each equipment, pipeline, the valve.
In the prior art, the used dry gas of heating is normally by the air compressor machine compression of waiting to repair air separation plant, and after the cooling of nitrogen water chilldown system, enters the purification system purifying that anhydrates again.Adopt the heating method of prior art, need restart freezing unit, refrigerating water pump, cooling pump, the molecular sieve system of air compressor machine and air compressor machine oil pump, the precooling of nitrogen water, also have water circulating pump.
Restart air compressor machine, the cooling pump and the refrigerating water pump of the precooling of nitrogen water, freezing units etc. cause the bigger wasting of resources.
If old heating method before adopting.Need restart air compressor machine and air compressor machine oil pump, the freezing unit of nitrogen water precooling, refrigerating water pump, cooling pump, molecular sieve system also has water circulating pump.
The utility model content
Problem to be solved in the utility model provides a kind of air-seperation system that oxygen is produced of making, and no matter wherein its objective is where overlap stop production to overhaul, all opens to add wet by another set of providing.
To achieve these goals, the technical scheme taked of the utility model is:
The air-seperation system that system oxygen provided by the utility model is produced, comprise two cover air separation equipments, every cover air separation equipment all adopts out molecular sieve to carry out molecular sieve adsorption and purifies, and adopts a pipeline 3 that the air line that the described air separation equipment of two covers goes out molecular sieve is connected.
For making the utility model more perfect, more detailed and concrete technical scheme below also further having proposed to obtain best practical function, realizes goal of the invention better, has embodied novelty of the present utility model and creativeness:
The air of described two cover air separation equipments advances respectively to establish a through hole on the ice chest house steward, and described pipeline connects these two through holes
The specification of described pipeline is DN80mm, and its material is a carbon steel tubing.
Establish two stopping valve on the described pipeline.
The utility model adopts technique scheme, has simplified operation, only need open the by-pass valve control of two molecular sieve connecting tubes, just can heat to another set of equipment, has saved above operations.Saved the resource that starting equipment consumed once more.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification sheets and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a workflow synoptic diagram of the present utility model.
Be labeled as among the figure:
1, air separation equipment, 2, air separation equipment, 3, pipeline, 4, air advances the ice chest house steward, 5, go out molecular sieve, 6, air advances the ice chest house steward, 7, go out molecular sieve.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and principle of work, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present utility model structure expressed as Fig. 1, Fig. 2, type are a kind of air-seperation system that oxygen is produced of making, and comprise air separation equipment 1, air separation equipment 2, and every cover air separation equipment all adopts out molecular sieve 5 to carry out molecular sieve adsorption and purifies.
Among the figure, air separation equipment 1 is KDONAr7000/7000/210;
In order to solve the problem that exists at the described present known technology of this specification sheets background technology part and to overcome its defective, realize no matter wherein where overlapping stop production to overhaul, all open with by the another set of goal of the invention that adds wet that provides, the technical scheme that the utility model is taked is:
As shown in Figure 1, the air-seperation system that system oxygen provided by the utility model is produced, adopts a pipeline 3 with two overlap described air separation equipment 1 go out molecular sieve 5, air separation equipment 2 go out molecular sieve 7, air line connect.
For solving an aforesaid difficult problem, the utility model adopts a carbon steel pipe that two air lines of extracting molecular sieve are connected, and where no matter such two complete equipments overlap stop production to overhaul, can add wet by another set of providing.Its advantage is:
1, simplified operation.
After improving, only need open the by-pass valve control of two molecular sieve connecting tubes, just can heat to another set of equipment, saved above operations.Air separation plant will carry out big maintenance after operation for some time, before and after maintenance, need add gentle the purging to equipment.Purpose is to remove moisture, carbonic acid gas, acetylene and other impurity that is frozen under the low-temperature condition in each equipment, pipeline, the valve.
2, saved the resource that recurrence equipment is consumed.
If calculate,, can save at least by heating and purging calculating in 48 hours with air separation equipment 2 equipment:
Air compressor machine power consumption 5600 * 0.85 * 48=228488 degree;
Oil pump 15 * 0.85 * 48=612 degree;
Refrigerating water pump 75 * 0.85 * 48=3060 degree;
Cooling pump 37 * 0.85 * 48=1509.6 degree;
Freezing unit 844 * 0.85 * 48=34435.2 degree;
Molecular sieve electric heater 945 * 0.85 * 20=16065 degree;
Water circulating pump 315 * 0.85 * 48=12852 degree.
Amount to the 228488+612+3060+1509.6+34435.2+16065+12852=297021.8 degree, add up to Renminbi 297021.8 * 0.55=163361.99 unit.
The air that the air of two cover air separation equipments 1 described in the utility model advances ice chest house steward 4 and air separation equipment 2 advances respectively to establish a through hole on the ice chest house steward 6, and described pipeline 3 connects these two through holes.KDONAr10000/10000/300 and KDONAr7000/7000/210 type air separation plant, if there is a cover to overhaul, the supply that adds wet can be provided by another set of.Adopt a DN80mm carbon steel pipe that two air lines of extracting molecular sieve are connected, and on chain is taken over, two stopping valve are set.This mounting structure, where no matter two complete equipments overlap stop production to overhaul, all opens to add wet by another set of providing.
Must be to sky divide that ice chest heats add wet must be temperature about 10 ℃, and be exsiccant gas.
The used dry gas of in the past heating is normally by the air compressor machine compression of waiting to repair air separation plant, and after the cooling of nitrogen water chilldown system, enters the purification system purifying that anhydrates again, entering the feed channel of heating then.
The specification of pipeline 3 described in the utility model is DN80mm, and its material is a carbon steel tubing.
Adopt a DN80mm carbon steel pipe that two air lines of extracting molecular sieve are connected, where no matter such two complete equipments overlap stop production to overhaul, all opens to add wet by another set of providing.
Establish two stopping valve on the pipeline 3 described in the utility model.Play the effect of interrupting the pipeline gas passage.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (4)
1. make the air-seperation system that oxygen is produced for one kind, comprise two cover air separation equipments (1,2), every cover air separation equipment all adopts out molecular sieve (5,7) to carry out molecular sieve adsorption and purifies, and it is characterized in that: adopt a pipeline (3) that the air line that goes out molecular sieve (5,7) of the two described air separation equipments of cover (1,2) is connected.
2. according to the air-seperation system of the described system oxygen production of claim 1, it is characterized in that: the air of described two cover air separation equipments (1) advance on the ice chest house steward (4,6) respectively to establish a through hole, and described pipeline (3) connects these two through holes.
3. according to the air-seperation system of the described system oxygen production of claim 1, it is characterized in that: the specification of described pipeline (3) is DN80mm, and its material is a carbon steel tubing.
4. the air-seperation system of producing according to the described system oxygen of claim 1 is characterized in that: establish two stopping valve on the described pipeline (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202448202U CN201777881U (en) | 2010-06-30 | 2010-06-30 | Air separation system for oxygen production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202448202U CN201777881U (en) | 2010-06-30 | 2010-06-30 | Air separation system for oxygen production |
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| Publication Number | Publication Date |
|---|---|
| CN201777881U true CN201777881U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202448202U Expired - Fee Related CN201777881U (en) | 2010-06-30 | 2010-06-30 | Air separation system for oxygen production |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767987A (en) * | 2012-08-15 | 2012-11-07 | 莱芜钢铁集团有限公司 | Method for solving blocking of main heat exchanger |
| CN103245167A (en) * | 2013-05-24 | 2013-08-14 | 济钢集团有限公司 | Running device and running method for loads of multiple machine sets of oxygenator to jointly vary |
| CN105318193A (en) * | 2014-07-31 | 2016-02-10 | 宝山钢铁股份有限公司 | Low-pressure nitrogen gas header pipe system and control method |
| CN105469574A (en) * | 2015-12-17 | 2016-04-06 | 长春工业大学 | Wireless data transmission device for molecular sieve purifier based on WBee |
| CN105758115A (en) * | 2014-12-19 | 2016-07-13 | 常熟市永安工业气体制造有限公司 | Pure nitrogen preparation device |
| CN106219495A (en) * | 2016-08-19 | 2016-12-14 | 浙江智海化工设备工程有限公司 | A kind of small-sized PSA and the combination unit of small-sized cryogenic air separation unit |
| CN113669627A (en) * | 2021-08-16 | 2021-11-19 | 南京钢铁股份有限公司 | Pipe network system and method for increasing oxygen yield by utilizing surplus compressed air |
-
2010
- 2010-06-30 CN CN2010202448202U patent/CN201777881U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767987A (en) * | 2012-08-15 | 2012-11-07 | 莱芜钢铁集团有限公司 | Method for solving blocking of main heat exchanger |
| CN102767987B (en) * | 2012-08-15 | 2014-10-29 | 莱芜钢铁集团有限公司 | Method for solving blocking of main heat exchanger |
| CN103245167A (en) * | 2013-05-24 | 2013-08-14 | 济钢集团有限公司 | Running device and running method for loads of multiple machine sets of oxygenator to jointly vary |
| CN103245167B (en) * | 2013-05-24 | 2015-12-09 | 济钢集团有限公司 | A kind of oxygenerator multicomputer associating variable load operation device and method |
| CN105318193A (en) * | 2014-07-31 | 2016-02-10 | 宝山钢铁股份有限公司 | Low-pressure nitrogen gas header pipe system and control method |
| CN105318193B (en) * | 2014-07-31 | 2018-01-30 | 宝山钢铁股份有限公司 | A kind of low-pressure nitrogen manifold system and control method |
| CN105758115A (en) * | 2014-12-19 | 2016-07-13 | 常熟市永安工业气体制造有限公司 | Pure nitrogen preparation device |
| CN105469574A (en) * | 2015-12-17 | 2016-04-06 | 长春工业大学 | Wireless data transmission device for molecular sieve purifier based on WBee |
| CN106219495A (en) * | 2016-08-19 | 2016-12-14 | 浙江智海化工设备工程有限公司 | A kind of small-sized PSA and the combination unit of small-sized cryogenic air separation unit |
| CN113669627A (en) * | 2021-08-16 | 2021-11-19 | 南京钢铁股份有限公司 | Pipe network system and method for increasing oxygen yield by utilizing surplus compressed air |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110330 Termination date: 20180630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |