CN104121475B - A kind of circulator bath liquid nitrogen fast gasifying device and operational approach - Google Patents
A kind of circulator bath liquid nitrogen fast gasifying device and operational approach Download PDFInfo
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Abstract
The present invention provides a kind of circulator bath liquid nitrogen fast gasifying device and operational approach.This device includes pressure low-temperature liquid tank C1, boosting gasifier C2, circulator bath liquid nitrogen converter C3, cooling water tower circulation water collecting-tank C4 and controlling valve C18；It is connected with circulator bath liquid nitrogen converter C3 by controlling valve C18 bottom pressure low-temperature liquid tank C1, the circulating water heating that flowed from the liquid nitrogen of pressure low-temperature liquid tank C1 and gasify and enter into Nitrogen pipe network system C5, the recirculated water of flowing is from cooling water tower circulation water collecting-tank C4.The emergent quick demand of nitrogen system can be realized by the present invention, set operation is completed at 12 minutes, it is that nitrogen sends into Nitrogen pipe network by liquid nitrogen gasification, according to manufacturing technique requirent, select suitable liquid tank volume, make liquid nitrogen meet an urgent need gasification installation maintain within a certain period of time, for process burst accident win the quality time.
Description
Technical field
The invention belongs to the cryogenic liquefying air separation oxygen in commercial production, nitrogen, and gasify liquid nitrogen and compression conveying technology field, particularly to a kind of circulator bath liquid nitrogen fast gasifying device and operational approach.
Background technology
In large scale industry produces, the general air separation unit having supporting scale, isolated nitrogen is transported to pipe network by compression, emergent replace for each process units as equipment container, seal off, carries the purposes such as material, and the continuous-stable of nitrogen is supplied extremely important.But, in long-term production, owing to being restricted by certain condition, it is inevitably present air separation unit and extremely needs decrement operation, the unexpected chain parking of nitrogen compressor, the external device (ED) demand strengthening nitrogen suddenly etc. situation, for guaranteeing safe production, nitrogen system also must have corresponding counter-measure.
At present, the measure stablizing Nitrogen pipe network pressure has following several: one is standby space division process units；Two is standby high pressure nitrogen surge tank；Three is that liquid nitrogen is met an urgent need gasification system.The first standby space division process units is applicable to the scheduled overhaul of device；What the second standby high pressure nitrogen surge tank was applicable to short time important device or position promptly sprays nitrogen；The third liquid nitrogen is met an urgent need to vaporize and is applicable to process dozens of minutes to the failure problems in several days.
The third liquid nitrogen above-mentioned gasification system of meeting an urgent need is divided into again: steam water bath liquid nitrogen gasification system (seeing Fig. 1) or air bath liquid nitrogen gasification system (seeing Fig. 2).Steam water bath liquid nitrogen gasification system flow is complicated, complex operation, need the steps such as first pre-cooling liquid pump, boiled water pump, logical steam, typically want time-consuming more than 30 minutes, particularly start more difficult under north of China cold climate conditions in winter, the frozen block problem of water system, vapour system often occurs, do not have Contingency supply nitrogen effect, but its compact equipment, floor space is little, and once coming into operation can long-time steady operation.Air bath liquid nitrogen gasification system flow is simple, operates relatively easy, but equipment overall volume is huge, and equipment runs and affected by rainy weather or Northern Part of China sleet in winter climate change.Existing steam water bath liquid nitrogen gasification system to expend substantial amounts of steam and electric energy；Flow process is relative complex, complex operation, more by external condition restriction；Start the most relatively long.Existing air bath liquid nitrogen gasification flow process is affected bigger by local climate.
Summary of the invention
The present invention provides a kind of circulator bath liquid nitrogen fast gasifying device and operational approach, it be have circulation based on air separation unit or other chemical plant installations premised on.(Fig. 3) is formed by parts such as pressure low-temperature liquid tank C1, boosting gasifier C2, circulator bath gasifier C3, public cooling water tower circulation water pond C4, controlling valve C18；Its flow process is: the liquid nitrogen of pressure low-temperature liquid tank C1 enters into circulator bath gasifier C3 by controlling valve C18, circulating water heating that liquid nitrogen is flowed and gasify to the nitrogen of about 5 DEG C and then enter into Nitrogen pipe network pipeline C5；During resting state, the liquid level (being measured by liquidometer C7) of pressure low-temperature liquid tank C1 to maintain more than 80%, and keep setting pressure (such as 1.0 MPas), in order to there is the amount of liquid nitrogen of abundance maintain sufficiently long the supply of nitrogen time and have certain pressure differential to provide sufficient power to be sent by liquid nitrogen；Can realize the emergent quick demand of nitrogen system by the present invention, complete set operation at 12 minutes, making liquid nitrogen gasification is that nitrogen sends into nitrogen public pipeline, can maintain according to actual needs about 90 minutes, it is achieved the continuous-stable supply of Nitrogen pipe network.
Pressure low-temperature liquid tank C1 mentioned in this article a, it is simply that container holding liquid nitrogen, as long as this container is resistant to certain pressure and low temperature, just meets the requirement of present invention process；As for its concrete structure not at the row of the present invention, therefore omit, can be vacuum interlayer spherical container, hydrostatic column；May also be monolayered vessel additional insulation asbestos or perlite etc. and do not affect the integrity of flow process of the present invention.
Cooling tower mentioned above is circulating water cooling tower commonname in commercial production, also known as cooling tower；Recirculated water return water temperature is higher or reaches 70 degree etc., and 28 degree i.e. can be described as cold water.
The circulator bath liquid nitrogen fast gasifying device of the present invention, when its liquid nitrogen may be from the pressure liquid nitrogen of master cold C23 outlet of full low pressure air separation unit, is filled into liquid nitrogen in pressure low-temperature liquid tank C1 by valve C12；In filling process, in pressure low-temperature liquid tank C1, the nitrogen of liquid nitrogen gasification is not directly discharged in air, but low temperature nitrogen is back to (its pressure is at about 0.03 MPa) in the pipeline before tower C24 nitrogen enters main heat exchanger C20 on full low pressure air separation unit by valve C11, enter in low-pressure nitrogen pipeline through main heat exchanger C20 and valve C25, to reclaim nitrogen product and cold.
Same principle, liquid nitrogen also can be filled with in liquid nitrogen container by outside liquid nitrogen tank car by the terminal valve C16 of pressure low-temperature liquid tank C1；When using outside liquid nitrogen tank car to fill liquid nitrogen to pressure low-temperature liquid tank, also the nitrogen of liquid nitrogen gasification in pressure low-temperature liquid tank can be back to (its pressure is at about 0.03 MPa) in the pipeline before tower C24 nitrogen enters main heat exchanger C20 on full low-pressure nitrogen external compression air separation unit by valve C11, enter in low-pressure nitrogen pipeline through main heat exchanger C20 and valve C25, to reclaim nitrogen product and cold, but liquid tank to sustain enough pressure used by liquid nitrogen tank car, it is typically designed use pressure more than 0.2 MPa.
Circulator bath liquid nitrogen fast gasifying device as above, it is provided with temperature alarming self-regulated loop in circulator bath liquid nitrogen converter C3 outlet, when temperature is less than setting value, turns down controlling valve C18, prevented the low-temperature embrittleness problem that outside ductwork tubing is brought due to variations in temperature drastically by low temperature nitrogen.
In another embodiment of the present invention, preferably the one of one group of band finned tube evaporator E2(circulator bath liquid nitrogen converter C3) it is arranged in circulating water cooling tower collecting-tank and (or is arranged on the water surface in cooling tower pond near circulating water flow exit position, make the water slug liquid nitrogen evaporator flowed out from water-locator filler), in order to make more recirculated water pass through fin crack and promote heat exchange.
Circulator bath liquid nitrogen fast gasifying device of the present invention, standby before item by item order inspection examine situations below:
1, the valve before the liquidometer of pressure low-temperature liquid tank C1, Pressure gauge, safety anti-explosive film is in normally open；
2, open C11, C12 valve, in liquid fills, fill liquid level to more than 80% liquid level, be then shut off C11 valve；
Or be connected on the joint that the 16th valve (C16) is front with outside liquid nitrogen tank car discharge liquid nitrogen joint, then open the 16th, 11 valves (C16, C11), in liquid fills, fill liquid level to more than 80% liquid level with outside liquid nitrogen tank car, be then shut off the 16th, the 11st valve (C16, C11)；Pull down outside liquid nitrogen tank car discharge liquid nitrogen joint；
3, after closing C11 valve, when the lower pressure tower of pressure low-temperature liquid tank C1 pressure and air separation unit maintains an equal level, C12 valve is turned off；
4, open valve C15, C13 before and after the carburator C2 that boosts bottom pressure low-temperature liquid tank C1, by pressure-control valve C14, liquid nitrogen is filled pressure and be adjusted to set pressure (such as about 1.0 MPas)；
5, opening C17, C19 valve, at this moment whole system is i.e. in standby emergency mode；
6, when Nitrogen pipe network pipeline C5 nitrogen pressure is less than setup pressure value (such as 0.5 MPa), controlling valve C18 automatically turns on, liquid tank top pressure is automatically adjusted by boosting gasifier pressure control valve (C14) and maintains in indication range, can tackle calmly burst accident.
The circulating water temperature that the present invention public cooling water tower circulation water pond C4 is used is at about 28 DEG C.
Emergent liquid nitrogen fast gasifying device disclosed in this invention can design as an outer part for nitrogen process during air separation unit on new in the lump, can eliminate the outer pressure oscillation for Nitrogen pipe network, will be greatly improved the supportability of air separation unit, reduce investment cost.
Compared with prior art, advantages of the present invention and effect:
1, the advantage that the present invention is maximum is to start soon, within 12 minutes, can complete operation so that gasifying, nitrogen is grid-connected to be sent；
2, the present invention is without steam, and without power consumption, energy-saving effect is notable, but also the cold of recyclable liquid nitrogen；
3, present invention recirculated water substitutes soft water (during steam water-bath) and does cooling medium, and owing to recirculated water has certain cycles of concentration, in water, zwitterion is more, and heat transfer property is more preferable；
4, the freezing point of recirculated water involved in the present invention is lower than soft water, and in subzero, the thermal capacity of recirculated water is also above soft water, and these factors enhance liquid nitrogen heat exchange gasification；
5, circulating water temperature involved in the present invention is at about 28 DEG C, bathes soft water used by liquid nitrogen gasification (soft water temperature typically at about 10 DEG C, has water pump forced circulation, if soft water temperature controls high in waste steam) higher than steam water；
6, due to the fact that simple to operate, can frequently come into operation, the outer pressure oscillation for Nitrogen pipe network can be eliminated；If the present invention designs as an outer part for nitrogen process during air separation unit on new in the lump, the supportability of air separation unit will be greatly improved, reduce investment cost.
Accompanying drawing explanation
Fig. 1 is the steam water bath liquid nitrogen gasification flow chart of prior art.
Fig. 2 is the air bath liquid nitrogen gasification flow chart of prior art.
Fig. 3 is the circulator bath liquid nitrogen Quick-gasifying flow chart of the present invention.
Fig. 4 is cooling tower cooling principle schematic diagram.
Fig. 5 is liquid nitrogen converter top view in cooling water tower circulation water collecting-tank.
Fig. 6 is the liquid nitrogen converter profile at cooling water tower circulation water collecting-tank front view.
In figure, labelling implication is:
A1 cryogenic liquid fills；A2 boosts gasifier；A3 boosts gasifier inlet valve；A4 boosts gasifier exit valve；Send or outer cut-in valve outside A5 cryogenic liquid liquid filling nitrogen；A6 liquid nitrogen pump inlet valve；A7 liquid nitrogen pump inlet filter；A8 liquid nitrogen pump；A9 liquid nitrogen pump outlet check (non-return) valve；A10 liquid nitrogen pump outlet relief valve；A11 liquid nitrogen pump outlet valve；A12 low-temperature liquid tank liquidometer positive valve；A13 cryogenic liquid fills liquidometer；A14 cryogenic liquid fills liquidometer negative pressure valve；A15 cryogenic liquid fills atmospheric valve；A16 air separation unit liquid nitrogen enters cryogenic liquid and fills valve；A17 air separation unit liquid nitrogen pipeline；A18 low-temperature liquid tank relief valve group；A19 steam water-bath gasifier temperature control steam control valve；A20 steam valve；A21 jet chimney；A22 steam water-bath gasifier demineralized water is filled with valve；A23 demineralized water pipeline；A24 steam water-bath gasifier forced circulation water pump；A25 steam water-bath gasifier tank body；A26 steam water-bath gasifier condensed water receives tank liquidometer；A27 steam water-bath gasifier condensed water receives tank；A28 condensate water discharge pump inlet valve；A29 condensate water discharge pump；A30 condensate water discharge pump outlet check (non-return) valve；A31 condensate water discharge pump outlet valve；A32 condensed water discharge pipe road；A33 gasifies nitrogen pipeline；A34 gasifies nitrogen outlet valve；A35 steam water-bath gasifier gasification nitrogen safety valve；A36 steam water-bath gasifier liquid nitrogen heat exchange coil；
B1 cryogenic liquid fills；B2 boosts gasifier；B3 boosts gasifier inlet valve；Send or outer cut-in valve outside B4 cryogenic liquid liquid filling nitrogen；B5 low-temperature liquid tank liquidometer positive valve；B6 cryogenic liquid fills liquidometer；B7 cryogenic liquid fills liquidometer negative pressure valve；B8 cryogenic liquid fills atmospheric valve；B9 air separation unit liquid nitrogen enters cryogenic liquid and fills valve；B10 low-temperature liquid tank relief valve group；B11 air separation unit liquid nitrogen pipeline；B12 boosts gasifier exit valve；B13 liquid nitrogen pump inlet valve；B14 liquid nitrogen pump inlet filter；B15 liquid nitrogen pump；B16 liquid nitrogen pump outlet check (non-return) valve；B17 liquid nitrogen pump outlet relief valve；B18 liquid nitrogen pump outlet valve；B19 air bath gasifier；B20 gasifies nitrogen outlet valve；B21 outside ductwork nitrogen pipeline；
C1 is pressure low-temperature liquid tank；C2 boosts gasifier；C3 circulator bath liquid nitrogen converter；C4 public cooling water tower circulation water collecting-tank；C5 Nitrogen pipe network pipeline；C6 is pressure low-temperature liquid tank liquidometer positive valve；C7 is pressure, and cryogenic liquid fills liquidometer；C8 is pressure, and cryogenic liquid fills liquidometer negative pressure valve；Low-temperature liquid tank relief valve group that C9 is pressure；C10 is pressure, and cryogenic liquid fills atmospheric valve；C11 gasification low temperature nitrogen returns air separation unit nitrogen and enters main heat exchanger preceding pipeline valve；C12 air separation unit liquid nitrogen go out main cold enter pressure cryogenic liquid fill valve；C13 boosts gasifier exit valve；C14 boosting gasifier pressure control and regulation valve；C15 boosts gasifier inlet valve；Send or outer cut-in valve outside C16 is pressure cryogenic liquid liquid filling nitrogen；C17 circulator bath liquid nitrogen converter inlet valve；C18 circulator bath liquid nitrogen converter controlling valve；C19 gasifies nitrogen outlet valve；C20 air separation unit main heat exchanger；C21 air separation unit subcooler；Tower under C22 air separation unit；C23 Main Condenser Associated with Air Separation；Tower on C24 air separation unit；C25 air separation unit nitrogen cooling box valve；C26 Main Condenser Associated with Air Separation liquid nitrogen removes tower valve；C27 air separation unit ice chest；
D1 air duct；D2 fan；D3 water-locator；D4 nozzle；D5 filler；D6 back-water valve (BWV)；D7 cooling tower framework；D9 collecting-tank liquid level；D10 ground；D11 cold dry air；D12 cold water falls；D13 damp-heat air is discharged；
E1 catchments pool wall；E3 collecting-tank exports；E4 current are illustrated；
F4 gasifier fixed support；F5 bracket fixing bolt；F8 collecting-tank ground.
Detailed description of the invention
Supply 20000 cubic metres of nitrogen, Nitrogen pipe network normal pressurees, as a example by being 0.5 MPa, circulator bath liquid nitrogen fast gasifying device is described by outer per hour below.Choosing pressure low temperature liquid nitrogen vacuum tank uses pressure rating to be 1.0 MPas, dischargeable capacity 50 cubic metres, installs in place by equipment according to flow process shown in Fig. 3.Assume that full low pressure air separation unit produces normal, by the circulator bath liquid nitrogen fast gasifying device valve Close All outside ice chest C27, then sequentially include the following steps:
1, the valve before the liquidometer of pressure low-temperature liquid tank C1, Pressure gauge, safety anti-explosive film is opened；
2, open C11, C12 valve, in pressure low-temperature liquid tank C1, fill liquid to more than 80% liquid level；
3, first close C11 valve, when the lower pressure tower of pressure low-temperature liquid tank C1 pressure and air separation unit maintains an equal level, turn off C12 valve；
4, open valve C15, C13 before and after the gasifier that boosts bottom pressure low-temperature liquid tank C1, by pressure-control valve C14, liquid nitrogen is filled C1 pressure and be adjusted to about 0.8 MPa；
5, opening C17, C19 valve, at this moment whole system is i.e. in resting state；
6, when Nitrogen pipe network pipeline C5 nitrogen pressure is less than in setting 0.5 MPa, controlling valve C18 automatically turns on, and the pressure-control valve C14 of the boosting gasifier C2 bottom liquid tank is also automatically adjusted,Stablizing in indication range with the top pressure maintaining liquid to fill, in liquid fills, liquid can maintain about 90 minutes, can tackle calmly burst accident within the time period；
7, when implementing step 7, when Nitrogen pipe network pipeline C5 nitrogen pressure as little as 0.46 MPa, the boosting gasifier valve C15 of closing liquid pot bottom, open the top pressure that C12 valve maintains liquid to fill, so can more reclaim the cold of liquid nitrogen in recirculated water, in liquid fills simultaneously, liquid can maintain the longer use time.
The above, be only the preferred embodiments of the present invention, and the interest field that the present invention is advocated is not limited thereto.The present invention also can have other various embodiments; in the case of without departing substantially from present invention spirit and essence thereof; those skilled in the art are when making various corresponding change and deformation according to the present invention, but these change and deform the protection domain that all should belong to appended claims of the invention.
Claims (7)
1. a circulator bath liquid nitrogen fast gasifying device, including pressure low-temperature liquid tank (C1), boosting gasifier (C2), circulator bath liquid nitrogen converter (C3), cooling water tower circulation water collecting-tank (C4) and controlling valve (C18)；Pressure low-temperature liquid tank (C1) bottom is connected with circulator bath liquid nitrogen converter (C3) by controlling valve (C18), the circulating water heating that flowed from the liquid nitrogen of pressure low-temperature liquid tank (C1) and gasify and enter into Nitrogen pipe network pipeline (C5), the recirculated water of flowing is from cooling water tower circulation water collecting-tank (C4)；
Wherein, the liquid nitrogen entrance at pressure low-temperature liquid tank (C1) top is connected by the 12nd valve (C12) cold with the master of full low pressure air separation unit (C23) liquid nitrogen pipes；Or pressure low-temperature liquid tank (C1) is connected with outside liquid nitrogen tank car by the 16th valve (C16)；
The gasification nitrogen outlet of pressure low-temperature liquid tank (C1) is connected by the nitrogen pipeline that the 11st valve (C11) is front with the main heat exchanger (C20) at tower (C24) top on full low pressure air separation unit.
2. circulator bath liquid nitrogen fast gasifying device as claimed in claim 1, is provided with temperature alarming self-regulated loop in circulator bath liquid nitrogen converter (C3) outlet, when temperature is less than setting value, turns down controlling valve (C18).
3. the circulator bath liquid nitrogen fast gasifying device as described in claim 1-2 is arbitrary, circulator bath liquid nitrogen converter (C3) cooling water tower circulation water to be arranged in collecting-tank (C4) is near the position of recirculated water collecting-tank flow export, or be arranged on the water surface of cooling water tower circulation water collecting-tank, make the water sprinkle flowed out from cooling tower water-locator filler on circulator bath liquid nitrogen evaporator surface.
4. an operational approach for circulator bath liquid nitrogen fast gasifying device as described in claim 1-3 is arbitrary, it comprises the following steps:
(1) valve before the liquidometer of pressure low-temperature liquid tank (C1), Pressure gauge, safety anti-explosive film is opened；
(2) open the 11st, 12 valves (C11, C12), in pressure low-temperature liquid tank (C1), fill liquid level to more than 80% liquid level, be then shut off the 11st valve (C11)；
Or be connected on the joint that the 16th valve (C16) is front with outside liquid nitrogen tank car discharge liquid nitrogen joint, then open the 16th, 11 valves (C16, C11), in pressure low-temperature liquid tank (C1), fill liquid level to more than 80% liquid level with outside liquid nitrogen tank car, be then shut off the 16th, the 11st valve (C16, C11)；Pull down outside liquid nitrogen tank car discharge liquid nitrogen joint；
(3), after closing the 11st valve (C11), when the lower pressure tower of pressure low-temperature liquid tank (C1) pressure and full low pressure air separation unit maintains an equal level, the 12nd valve (C12) is turned off；
(4) open valve (C15, C13) before and after pressure low-temperature liquid tank (C1) bottom boosting carburator (C2), by pressure-control valve (C14), pressure low-temperature liquid tank (C1) pressure is adjusted to the first setting pressure；
(5) open the 17th, 19 valves (C17, C19), at this moment whole system is i.e. in standby emergency mode；
(6) when Nitrogen pipe network pipeline (C5) nitrogen pressure is less than the second setup pressure value, and the 18th controlling valve (C18) automatically turns on,Pressure low-temperature liquid tank (C1) pressure is automatically adjusted maintains in indication range by the pressure-control valve (C14) of boosting gasifier (C2).
5. operational approach as claimed in claim 4, in maintaining liquid tank under resting state, liquid level is more than 80%, and setting pressure ratio Nitrogen pipe network pipeline (C5) normal pressure in pressure low-temperature liquid tank (C1) is high 0.2 0.5 MPas.
6. operational approach as claimed in claim 4, when Nitrogen pipe network pipeline nitrogen pressure is less than pressure tower under air separation unit, then can open the 12nd valve (C12) and carry out liquid nitrogen and fill, and close the front valve (C15) of boosting gasifier (C2).
7. operational approach as claimed in claim 4, when implementing step (6), when Nitrogen pipe network pipeline (C5) nitrogen pressure the as little as the 3rd setup pressure value, close the front valve (C15) of the boosting gasifier (C2) of pressure low-temperature liquid tank (C1) bottom, open the 12nd valve (C12) and maintain the pressure of pressure low-temperature liquid tank (C1), so can more reclaim the cold of liquid nitrogen in recirculated water, in liquid fills simultaneously, liquid can maintain the longer use time.
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| CN104613311B (en) * | 2015-02-06 | 2016-06-01 | 北京石油化工工程有限公司 | A kind of reforming catalyst regeneration nitrogen specializes in device and method |
| CN106855451A (en) * | 2015-12-09 | 2017-06-16 | 上海华林工业气体有限公司 | A kind of device and method that airtight test is carried out using liquid nitrogen supercharging gasification |
| CN105508873B (en) * | 2016-02-18 | 2018-10-12 | 北京航天发射技术研究所 | A kind of low-temperature (low temperature) vessel vaporizer is from pressure charging system and method |
| CN115183147B (en) * | 2022-06-21 | 2023-06-27 | 浙江金象科技有限公司 | Intelligent gasifier and air supply system thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476806A (en) * | 2009-01-24 | 2009-07-08 | 中国电子系统工程第二建设有限公司 | Low-temperature liquid vaporization cooling capacity recovery utilization system |
| CN202133299U (en) * | 2011-06-08 | 2012-02-01 | 鞍钢股份有限公司 | Multi-cold-source circulating water cooling tower |
| CN102506559A (en) * | 2011-09-28 | 2012-06-20 | 开封东京空分集团有限公司 | Air-separation process for preparing high-purity nitrogen by multi-segment rectification |
| CN102589823A (en) * | 2012-02-16 | 2012-07-18 | 新兴能源装备股份有限公司 | Airtightness test and nitrogen replacement device used for high-pressure air cylinder |
| CN202501191U (en) * | 2012-03-16 | 2012-10-24 | 合肥巨网工业气体有限公司 | Water bath type energy-saving liquid nitrogen vaporizing system |
| CN202692309U (en) * | 2012-08-02 | 2013-01-23 | 上海宝钢气体有限公司 | Water-bath type liquid nitrogen cold energy recovery device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4279540B2 (en) * | 2002-11-13 | 2009-06-17 | 大陽日酸株式会社 | Control method of air separation device |
| JP5032407B2 (en) * | 2008-07-24 | 2012-09-26 | 大陽日酸株式会社 | Nitrogen production method and apparatus |
-
2013
- 2013-04-25 CN CN201310145614.4A patent/CN104121475B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476806A (en) * | 2009-01-24 | 2009-07-08 | 中国电子系统工程第二建设有限公司 | Low-temperature liquid vaporization cooling capacity recovery utilization system |
| CN202133299U (en) * | 2011-06-08 | 2012-02-01 | 鞍钢股份有限公司 | Multi-cold-source circulating water cooling tower |
| CN102506559A (en) * | 2011-09-28 | 2012-06-20 | 开封东京空分集团有限公司 | Air-separation process for preparing high-purity nitrogen by multi-segment rectification |
| CN102589823A (en) * | 2012-02-16 | 2012-07-18 | 新兴能源装备股份有限公司 | Airtightness test and nitrogen replacement device used for high-pressure air cylinder |
| CN202501191U (en) * | 2012-03-16 | 2012-10-24 | 合肥巨网工业气体有限公司 | Water bath type energy-saving liquid nitrogen vaporizing system |
| CN202692309U (en) * | 2012-08-02 | 2013-01-23 | 上海宝钢气体有限公司 | Water-bath type liquid nitrogen cold energy recovery device |
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