CN208859995U - A kind of device preparing liquid oxygen using low temperature liquid nitrogen - Google Patents
A kind of device preparing liquid oxygen using low temperature liquid nitrogen Download PDFInfo
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- CN208859995U CN208859995U CN201821694739.7U CN201821694739U CN208859995U CN 208859995 U CN208859995 U CN 208859995U CN 201821694739 U CN201821694739 U CN 201821694739U CN 208859995 U CN208859995 U CN 208859995U
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- oxygen
- liquid
- liquid nitrogen
- tank
- heat exchanger
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Abstract
The utility model belongs to the technical field of liquid gas, in particular to a kind of device that liquid oxygen is prepared using low temperature liquid nitrogen, described device includes liquid oxygen tank, liquid nitrogen tank and heat exchanger, oxygen recovery pipe is provided at the top of the liquid oxygen tank, the bottom of the liquid nitrogen tank is provided with liquid nitrogen efferent duct, oxygen recovery pipe and liquid nitrogen efferent duct pass through heat exchanger, oxygen carries out heat with liquid nitrogen and exchanges, oxygen condensation is liquid oxygen after exchange, liquid nitrogen re-heat is nitrogen, oxygen recovery pipe connects liquefied oxygen tank vehicle after heat exchanger, and liquid nitrogen efferent duct connects fractionating column.Low temperature liquid nitrogen provided by the utility model prepares the device of liquid oxygen, for recycling in liquid oxygen tank due to the gas of insulation loss evaporation, has significant economic benefit.
Description
Technical field
The utility model belongs to the technical field of liquid gas, in particular to a kind of dress that liquid oxygen is prepared using low temperature liquid nitrogen
It sets.
Background technique
Full liquid air separation plant is that air is become liquid by the method for compression depth of round freezing using air as raw material
State gradually separates the equipment for producing the liquid form products such as liquid oxygen, liquid nitrogen using rectifying from liquid air.
Storage tank system is entered by the liquid oxygen product that full liquid air separation plant produces, storage tank system is since insulation is lost, in tank
Liquid oxygen flashes to oxygen, persistently increases pressure inside the tank, it is therefore desirable to continuous discharge about 100Nm3The gas of/hour, basin internal pressure
Power just can be normal.The cryogenic gas of evaporation is discharged among atmosphere, and the gas of discharge is to cause close to the cryogenic gas of saturation
Very big waste.
Utility model content
The purpose of the utility model is to provide a kind of devices that liquid oxygen is prepared using low temperature liquid nitrogen, for recycling liquid oxygen tank
In due to insulation loss evaporation gas.
Purpose of the utility model is realized as follows: a kind of device for preparing liquid oxygen using low temperature liquid nitrogen, described device
Including liquid oxygen tank, liquid nitrogen tank and heat exchanger, oxygen recovery pipe, the liquid nitrogen tank are provided at the top of the liquid oxygen tank
Bottom be provided with liquid nitrogen efferent duct, oxygen recovery pipe and liquid nitrogen efferent duct pass through heat exchanger, and oxygen and liquid nitrogen carry out heat friendship
It changes, oxygen condensation is liquid oxygen after exchange, and liquid nitrogen re-heat is nitrogen, and oxygen recovery pipe connects liquefied oxygen tank vehicle, liquid after passing through heat exchanger
Nitrogen efferent duct connects fractionating column.
The side bottom of above-mentioned liquid oxygen tank is provided with liquid oxygen input pipe, and bottom is provided with liquid oxygen efferent duct, liquid oxygen efferent duct
It is connected with liquefied oxygen tank vehicle, the side bottom of the liquid nitrogen tank is provided with liquid nitrogen input pipe.
Above-mentioned heat exchanger is plate heat exchanger.
Oxygen recovery pipe is contrary with the fluid conveying in liquid nitrogen efferent duct in above-mentioned heat exchanger.
Oxygen emptying pipe is provided on above-mentioned oxygen recovery pipe, the oxygen emptying pipe is located at before heat exchanger.
Between above-mentioned oxygen recovery pipe and liquefied oxygen tank vehicle, connected using hose between liquid oxygen efferent duct and liquefied oxygen tank vehicle.
Shut-off valve is provided on above-mentioned pipeline.
Compared to the prior art the utility model, has the following beneficial effects:
1, the utility model is lower than liquid oxygen using the condensing temperature of liquid nitrogen, is exchanged heat by heat exchanger, and liquid nitrogen will evaporate
Oxygen is condensed into liquid oxygen again, and then introduces liquefied oxygen tank vehicle, realizes the full recycling that oxygen discharges in liquid oxygen tank.
2, since the market price of liquid oxygen is significantly larger than the market price of liquid nitrogen, had using liquid nitrogen liquefied oxygen very high
Market income, meanwhile, the liquid nitrogen after re-heat can be further introduced into fractionating column rectifying and be prepared as liquid nitrogen again.
3, the utility model device is simple, easy to operate, has significant economic benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Appended drawing reference: 1, liquid oxygen tank；2, liquid nitrogen tank；3, heat exchanger；4, oxygen recovery pipe；5, liquid nitrogen efferent duct；6,
Liquid oxygen input pipe；7, liquid oxygen efferent duct；8, liquid nitrogen input pipe；9, oxygen emptying pipe；10, hose；11, shut-off valve.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing, referring to Fig. 1:
A kind of device preparing liquid oxygen using low temperature liquid nitrogen, described device include liquid oxygen tank 1, liquid nitrogen tank 2 and heat exchange
Device 3, the top of the liquid oxygen tank 1 are provided with oxygen recovery pipe 4, and the bottom of the liquid nitrogen tank 2 is provided with liquid nitrogen efferent duct
5, oxygen recovery pipe 4 and liquid nitrogen efferent duct 5 pass through heat exchanger 3, and oxygen carries out heat with liquid nitrogen and exchanges, and oxygen condensation is after exchange
Liquid oxygen, liquid nitrogen re-heat are nitrogen, and oxygen recovery pipe 4 connects liquefied oxygen tank vehicle, the connection fractionation of liquid nitrogen efferent duct 5 after passing through heat exchanger 3
Tower.
The process of the oxygen recovery of the utility model is as follows: since insulation is lost, the liquid oxygen in liquid oxygen tank 1 is evaporated to oxygen
Gas, oxygen are discharged by oxygen recovery pipe 4, and by heat exchanger 3, the liquid nitrogen in liquid nitrogen tank 2 is also passed through by liquid nitrogen efferent duct 5
Heat exchanger 3, since the condensing temperature of liquid nitrogen is lower than 16 ° of liquid oxygen or so, in the oxygen and liquid nitrogen efferent duct 5 in oxygen recovery pipe 4
Liquid nitrogen carry out heat exchange, heat exchange after oxygen condensation be liquid oxygen, liquid nitrogen re-heat be nitrogen, later, liquid oxygen enters liquid oxygen
It stores and uses in tank car, the liquid nitrogen after re-heat reenters the further rectifying of fractionating column and produces liquid nitrogen.
In order to facilitate use, the side bottom of above-mentioned liquid oxygen tank 1 is provided with liquid oxygen input pipe 6, and it is defeated that bottom is provided with liquid oxygen
Outlet pipe 7, liquid oxygen efferent duct 7 are connected with liquefied oxygen tank vehicle, and the side bottom of the liquid nitrogen tank 2 is provided with liquid nitrogen input pipe 8.
Above-mentioned heat exchanger 3 selects the heat exchanger that can be realized heat exchange purpose in the prior art, preferably plate heat exchanger.
Oxygen recovery pipe 4 is contrary with the fluid conveying in liquid nitrogen efferent duct 5 in above-mentioned heat exchanger, improves heat exchange effect
Rate.
Oxygen emptying pipe 9 is provided on above-mentioned oxygen recovery pipe 4, the oxygen emptying pipe 9 is located at before heat exchanger 4, when
Whenever necessary, oxygen emptying pipe 9 can be used and be vented oxygen.
Between above-mentioned oxygen recovery pipe 4 and liquefied oxygen tank vehicle, connected using hose 10 between liquid oxygen efferent duct 7 and liquefied oxygen tank vehicle
It connects.
Shut-off valve 11 is provided on above-mentioned pipeline, shut-off valve 11 controls the flowing of fluid.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model
Within the scope of.
Claims (7)
1. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen, which is characterized in that described device includes liquid oxygen tank (1), liquid nitrogen
Basin (2) and heat exchanger (3) are provided with oxygen recovery pipe (4) at the top of the liquid oxygen tank (1), the liquid nitrogen tank (2)
Bottom is provided with liquid nitrogen efferent duct (5), and oxygen recovery pipe (4) and liquid nitrogen efferent duct (5) pass through heat exchanger (3), passes through heat exchanger
(3) oxygen recovery pipe (4) connects liquefied oxygen tank vehicle afterwards, and liquid nitrogen efferent duct (5) connects fractionating column.
2. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 1, which is characterized in that the liquid oxygen storage
The side bottom of tank (1) is provided with liquid oxygen input pipe (6), and bottom is provided with liquid oxygen efferent duct (7), liquid oxygen efferent duct (7) and liquid oxygen
Tank car is connected, and the side bottom of the liquid nitrogen tank (2) is provided with liquid nitrogen input pipe (8).
3. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 1, which is characterized in that the heat exchanger
It (3) is plate heat exchanger.
4. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 1, which is characterized in that the heat exchanger
(3) oxygen recovery pipe (4) is contrary with the fluid conveying in liquid nitrogen efferent duct (5) in.
5. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 1, which is characterized in that the oxygen returns
It is provided in closed tube (4) oxygen emptying pipe (9), the oxygen emptying pipe (9) is located at before heat exchanger (3).
6. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 2, which is characterized in that the oxygen returns
Between closed tube (4) and liquefied oxygen tank vehicle, it is connect using hose (10) between liquid oxygen efferent duct (7) and liquefied oxygen tank vehicle.
7. a kind of device for preparing liquid oxygen using low temperature liquid nitrogen according to claim 1 to 6, which is characterized in that
Shut-off valve (11) are provided on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821694739.7U CN208859995U (en) | 2018-10-18 | 2018-10-18 | A kind of device preparing liquid oxygen using low temperature liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821694739.7U CN208859995U (en) | 2018-10-18 | 2018-10-18 | A kind of device preparing liquid oxygen using low temperature liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208859995U true CN208859995U (en) | 2019-05-14 |
Family
ID=66421229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821694739.7U Expired - Fee Related CN208859995U (en) | 2018-10-18 | 2018-10-18 | A kind of device preparing liquid oxygen using low temperature liquid nitrogen |
Country Status (1)
| Country | Link |
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| CN (1) | CN208859995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297259A (en) * | 2018-10-18 | 2019-02-01 | 浙江海天气体有限公司 | A kind of device preparing liquid oxygen using low temperature liquid nitrogen |
-
2018
- 2018-10-18 CN CN201821694739.7U patent/CN208859995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297259A (en) * | 2018-10-18 | 2019-02-01 | 浙江海天气体有限公司 | A kind of device preparing liquid oxygen using low temperature liquid nitrogen |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190514 Termination date: 20211018 |