CN203431480U - Air-separation large-scale normal-pressure low-temperature storage tank zero venting device - Google Patents
Air-separation large-scale normal-pressure low-temperature storage tank zero venting device Download PDFInfo
- Publication number
- CN203431480U CN203431480U CN201320466771.0U CN201320466771U CN203431480U CN 203431480 U CN203431480 U CN 203431480U CN 201320466771 U CN201320466771 U CN 201320466771U CN 203431480 U CN203431480 U CN 203431480U
- Authority
- CN
- China
- Prior art keywords
- storage tank
- temperature storage
- air separation
- normal
- pipeline
- 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 - Fee Related
Links
Images
Abstract
The utility model discloses an air-separation large-scale normal-pressure low-temperature storage tank zero venting device, and relates to a normal-pressure low-temperature storage tank of an air separation system. The device comprises an air separation tower (1), a nitrogen filling system (7), an air separation control unit (8) and a normal-pressure low-temperature storage tank (10), wherein a fin-type heat exchanger (4) and a storage tank pressure and temperature sensor (11) are arranged on the upper part in the normal-pressure low-temperature storage tank; the normal-pressure low-temperature storage tank is connected with the air separation tower through a pipeline; a throttle valve (3) is arranged on the pipeline output from the air separation tower to the normal-pressure low-temperature storage tank; a valve is arranged on the pipeline through which heat exchange reflux liquid in the normal-pressure low-temperature storage tank flows out to the air separation tower; branch pipes are arranged on the flow-out pipeline of the normal-pressure low-temperature storage tank for connecting a check valve (6) and the nitrogen filling system (7); an air separation control unit is connected with the throttle valve and the storage tank pressure and temperature sensor. With the device, the problems of everyday venting loss of products and serious waste caused by the natural evaporation rate of 0.15 to 0.3% of a normal-pressure storage tank in the air separation system are solved.
Description
Technical field
The utility model relates to empty minute technical field, is specifically related to a kind of atmospheric low-temperature storage tank of space division system.
Background technique
Cryogenic liquide market was day by day flourishing in recent years, liquid oxygen, liquid argon, liquid nitrogen, and liquid carbon dioxide, LNG rock gas sales volume significantly increases, so that oxygenerator by-product this part is made profits is very considerable, becomes iron and steel enterprise's non-product made from steel income pith.The production of cryogenic liquide, storage, transportation be unable to do without adiabatic heat-insulation storage tank, and they are by a large amount of installations, use.
Adiabatic heat-insulation storage tank is divided into vacuum-powders insulation type and normal pressure powder isolation type, and powder isolation utilizes powder, fiber or the foamed material of lower thermal conductivity to reduce heat and imports into.Minute two kinds of forms: a kind of is under atmospheric pressure to apply ordinary powder thermal insulation (piling up adiabatic), and heat insulation layer is thicker, and be filled with drying nitrogen and maintain malleation, enter and condensation to prevent that water from dividing, minimum can time be applicable to liquid nitrogen temperature more than; Another kind of vacuum-powders insulation, vacuumizes loading the space of powder, has reduced gas heat-transfer, and powder particle also weakens radiative heat transfer simultaneously, makes insulation effect better.
Normal pressure powder storage tank is flat double layer construction, and inner bag is manufactured by stainless steel, and shell is manufactured by carbon steel, inner bag dress medium, and the interlayer between inner bag and shell forms a cold insulation space, and inner bag shell is flat-bottom structure, and tank deck is segment-shaped.Adiabatic with foam glass brick between inner bag and outer casing bottom, interlayer is adiabatic with pearlife, and shell is provided with rotation winding staircase, and there are operating platform and safety barrier in groove top.Capacity is 200m
3above, largest domestic is accomplished 2000m
3, with to compare gap abroad very far away.Working pressure is lower, and about 34KPa ∽ 40Kpa fills by liquor pump or difference of liquid level, also can be used as oxygen peak regulation air feed use, when the of short duration parking of oxygenerator or oxygen force down, comes into operation, and after pump pressurization, by vaporizer, is vaporized and is sent into pipe network.
The higher 1.5-3 ‰ of atmospheric storage tank evaporation rate, causes product to have emptying loss every day, and waste is serious.
Summary of the invention
The utility model provides a kind of sky to divide Large Atmosphere Pressure low temperature storing tank zero evacuating device, and the utility model has solved the higher 1.5-3 ‰ of atmospheric storage tank evaporation rate in space division system, causes product to have emptying loss every day, wastes serious problem.
For addressing the above problem, the utility model adopts following technological scheme: a kind of sky divides Large Atmosphere Pressure low temperature storing tank zero evacuating device, comprises air separation column 1, nitrogen inflating system 7, empty minute control unit 8 and atmospheric low-temperature storage tank 10; Atmospheric low-temperature storage tank 10 internal upper parts are provided with finned heat exchanger 4 and storage tank pressure and temperature sensor 11, atmospheric low-temperature storage tank 10 connects air separation column 1 by pipeline, at air separation column 1, on the pipeline of atmospheric low-temperature storage tank 10 outputs, be provided with throttle valve 3, the interior heat exchange of atmospheric low-temperature storage tank 10 is flowed back on the pipeline that liquid flows out to air separation column 1 and is provided with valve 5, on the pipeline that atmospheric low-temperature storage tank 10 flows out, has branched pipe to connect stop valve 6 and nitrogen inflating system 7; Empty minute control unit 8 connects throttle valve 3 and storage tank pressure and temperature sensor 11.
The utility model is air tower pressure nitrogen-180 ℃ that utilize space division system, temperature-194 ℃, pressure 0.045Mpa after throttle valve throttling, entering atmospheric low-temperature storage tank carries out heat exchange rear portion and enters an empty minute upper tower and participate in rectifying, a part enters after nitrogen inflating system cools reclaims fills bottle, after atmospheric low-temperature storage tank and the heat exchange of pressure nitrogen, temperature reduces partial liquefaction pressure decreased, has realized the object of storage tank constant pressure zero emptying.
The utility model advantage: in space division system, atmospheric low-temperature storage tank is realized zero emptying, avoids product emptying loss, avoids waste, and saves cost.
accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Symbol description in figure: air separation column 1, empty minute ice chest stop valve 2, throttle valve 3, finned heat exchanger 4, valve 5, stop valve 6, nitrogen inflating system 7, empty minute control unit 8, automatic air release valve 9, atmospheric low-temperature storage tank 10, storage tank pressure and temperature sensor 11.
embodiment
by best embodiment, the utility model is described in detail below
.
As shown in Figure 1, a kind of sky divides Large Atmosphere Pressure low temperature storing tank zero evacuating device, comprises air separation column 1, nitrogen inflating system 7, empty minute control unit 8 and atmospheric low-temperature storage tank 10; Atmospheric low-temperature storage tank 10 internal upper parts are provided with finned heat exchanger 4 and storage tank pressure and temperature sensor 11, atmospheric low-temperature storage tank 10 connects air separation column 1 by pipeline, at air separation column 1, on the pipeline of atmospheric low-temperature storage tank 10 outputs, be provided with throttle valve 3, the interior heat exchange of atmospheric low-temperature storage tank 10 is flowed back on the pipeline that liquid flows out to air separation column 1 and is provided with valve 5, on the pipeline that atmospheric low-temperature storage tank 10 flows out, has branched pipe to connect stop valve 6 and nitrogen inflating system 7; Empty minute control unit 8 connects throttle valve 3 and storage tank pressure and temperature sensor 11.
The utility model also comprises automatic air release valve 9, and automatic air release valve 9 connects atmospheric low-temperature storage tank 10 inside by pipeline, and automatic air release valve 9 connects empty minute control unit 8.
Technological process: air separation column pressure nitrogen clearancen divides ice chest stop valve 2 to enter storage tank upper fins formula heat exchanger 4 after throttle valve 3 throttlings, after finned heat exchanger 4 heat exchange, go out storage tank part nitrogen and through valve 5, enter air separation column and participate in empty minute rectifying and realize and recycling, finned heat exchanger heat exchange rear portion nitrogen inflated with nitrogen bottle after stop valve 6 enters nitrogen inflating system 7 cold recovery is realized output of products cold and is all reclaimed.Whole control procedure divides control unit 8 to utilize storage tank pressure and temperature sensor to carry out Automatic Control by sky above, set up automatic air release valve 9 storage tank pressure automatic evacuation when guaranteeing maintenance in empty minute to regulate simultaneously and guaranteed storage tank safe handling, this technique guarantees storage tank pressure stability with integrated operation in empty minute, has reached zero and has diffused.
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all mode of executions.And the apparent variation of being amplified out thus or change are still among protection domain of the present utility model.
Claims (2)
1. sky divides Large Atmosphere Pressure low temperature storing tank zero evacuating device, it is characterized in that, comprises air separation column (1), nitrogen inflating system (7), empty minute control unit (8) and atmospheric low-temperature storage tank (10); Atmospheric low-temperature storage tank (10) internal upper part is provided with finned heat exchanger (4) and storage tank pressure and temperature sensor (11), atmospheric low-temperature storage tank (10) connects air separation column (1) by pipeline, at air separation column (1), on the pipeline of atmospheric low-temperature storage tank (10) output, be provided with throttle valve (3), the interior heat exchange of atmospheric low-temperature storage tank (10) is flowed back on the pipeline that liquid flows out to air separation column (1) and is provided with valve (5), has branched pipe to connect stop valve (6) and nitrogen inflating system (7) on the pipeline that atmospheric low-temperature storage tank (10) flows out; Empty minute control unit (8) connects throttle valve (3) and storage tank pressure and temperature sensor (11).
2. a kind of sky divides Large Atmosphere Pressure low temperature storing tank zero evacuating device as claimed in claim 1, it is characterized in that, also comprise automatic air release valve (9), automatic air release valve (9) connects atmospheric low-temperature storage tank (10) inside by pipeline, and automatic air release valve (9) connects empty minute control unit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466771.0U CN203431480U (en) | 2013-08-02 | 2013-08-02 | Air-separation large-scale normal-pressure low-temperature storage tank zero venting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466771.0U CN203431480U (en) | 2013-08-02 | 2013-08-02 | Air-separation large-scale normal-pressure low-temperature storage tank zero venting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431480U true CN203431480U (en) | 2014-02-12 |
Family
ID=50060517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320466771.0U Expired - Fee Related CN203431480U (en) | 2013-08-02 | 2013-08-02 | Air-separation large-scale normal-pressure low-temperature storage tank zero venting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730505A (en) * | 2020-12-18 | 2021-04-30 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
-
2013
- 2013-08-02 CN CN201320466771.0U patent/CN203431480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730505A (en) * | 2020-12-18 | 2021-04-30 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100554682C (en) | Vacuum pumping method and device thereof | |
| CN104471303B (en) | For filling equipment and the method for pressurized cylinder from liquid gas storage tank | |
| CN104006295B (en) | A kind of equipment of the displaced type pressure carrying method of liquefied gas at low temp | |
| CN107014151A (en) | A kind of device and method of liquefaction of hydrogen | |
| CN203082526U (en) | High-efficiency energy-saving vertical low-temperature storage tank | |
| CN107429878A (en) | Station and method with fuel gas filling tank | |
| CN204704606U (en) | A kind of liquefied natural gas (LNG) tank based on liquid nitrogen cold regulation | |
| CN208901068U (en) | A kind of Supercritical Hydrogen storage tank | |
| CN102635776A (en) | High-integrated insulated deep-freezing container | |
| CN105387683B (en) | High-efficiency Gas liquefaction recovery method and device | |
| CN207943403U (en) | A kind of gas heat insulating storage tank | |
| CN206771874U (en) | A kind of device of liquefaction of hydrogen | |
| US20210254789A1 (en) | Method and facility for storing and distributing liquefied hydrogen | |
| CN104033727A (en) | Technique and device for treating BOG by using recycled cold energy at LNG receiving station | |
| CN205316815U (en) | High -efficient liquefaction recovery unit of natural gas | |
| CN204986390U (en) | Cryogenic liquids equipment | |
| CN203431480U (en) | Air-separation large-scale normal-pressure low-temperature storage tank zero venting device | |
| CN202629586U (en) | Box type gas filling device for liquefied natural gas | |
| CN102705697A (en) | Low-temperature storage tank | |
| CN109027660A (en) | A kind of storage method of Supercritical Hydrogen and the application of Supercritical Hydrogen | |
| CN105627096A (en) | LNG storage tank | |
| CN206145419U (en) | Oil gas warehousing and transportation cooling transport tank | |
| CN206831138U (en) | A kind of LNG storage tank of vacuum heat insulating plate structure and the LNG feeders containing the storage tank | |
| CN202580596U (en) | Highly-integrated heat-insulation cryogenic container | |
| CN103288085A (en) | Dry ice generator using cold energy produced in vaporization of cryogenic liquid |
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: 20140212 Termination date: 20200802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |