CN209131215U - A kind of liquid nitrogen vaporization cold recycling device - Google Patents
A kind of liquid nitrogen vaporization cold recycling device Download PDFInfo
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- CN209131215U CN209131215U CN201821854351.9U CN201821854351U CN209131215U CN 209131215 U CN209131215 U CN 209131215U CN 201821854351 U CN201821854351 U CN 201821854351U CN 209131215 U CN209131215 U CN 209131215U
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Abstract
The utility model provides a kind of liquid nitrogen vaporization cold recycling device, including liquid nitrogen storage tank, water tank and cold energy reclamation device, cold energy reclamation device includes the outer housing with water inlet and water out and the double pipe heat exchanger inside outer housing, the tube side of double pipe heat exchanger is exhaust gas passes, shell side is liquid nitrogen access, and outer housing inside constitutes water passage with the double pipe heat exchanger external space.Three accesses are mutually indepedent in cold energy reclamation device, but can conduct heat between tail gas and liquid nitrogen, liquid nitrogen and water.The utility model advantage: the device integrates liquid nitrogen gasification device and vent gas treatment and technique water-cooling apparatus, can effectively by liquid nitrogen vaporization when generated cooling capacity by way of heat exchange, exhaust treatment system and technical cooling water system are passed to, cooling capacity caused by liquid nitrogen vaporization is adequately utilized.Save exhaust treatment system and technical cooling water system energy consumption, it is energy saving, reduce cost.
Description
Technical field
The utility model relates to a kind of liquid nitrogen vaporization cold recycling devices, belong to industrial cycle and recycle field.
Background technique
Currently, in electronics industry, the use of nitrogen is often used as protective gas and nitrogen atmosphere than wide；Nitrogen one
As supplied by the way of liquid nitrogen vaporization, because factory is equipped with the equipment such as the vaporizer of liquid nitrogen storage tank and liquid nitrogen vaporization.
Liquid nitrogen can absorb a large amount of heat in vaporescence.Presently, the heat that liquid nitrogen vaporization absorbs arises primarily at surrounding
Air, moreover outdoor is all built at the liquid nitrogen station including liquid nitrogen storage tank and vaporizer in, so liquid nitrogen is capable of providing in vaporescence
Cooling capacity be not fully used, also result in very big waste.
On the other hand, a large amount of Combination tail gas can be generated in industrial production, this partial tail gas is usually to utilize low temperature skill
Then its liquefaction separation is recycled by art.Vent gas treatment part needs a large amount of cooling capacity to liquefy it, energy consumption compared with
It is high.Also contain certain heat in the higher tail gas of temperature simultaneously, this partial heat directly consumes in liquefaction process, do not have
It is fully used, causes energy waste.Meanwhile industrial premises can generally be arranged central air-conditioning, process cooling water mainly by
Water cooler provides, and after Cool-water Machine for Industry group will be water-cooled to assigned temperature, realizes cold and hot exchange by heat exchanger.Under long-term
Come, the energy consumption of Cool-water Machine for Industry group is huge.
Vent gas treatment and process cooling water cooling require the external world and give cooling capacity, and energy consumption is larger.And liquid nitrogen vaporization process meeting
A large amount of heat is absorbed, that is, a large amount of cooling capacity can be generated, this part cooling capacity is not utilized.There is presently no can be by industrial tail gas
The device that processing, process cooling water cooling are integrated with liquid nitrogen vaporization, therefore in the industrial production, the energy of this part does not have
It is fully used, causes serious energy waste.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of by industrial tail gas processing, process cooling water drop
Temperature is integrated with liquid nitrogen vaporization, the device for making vaporization cold amount of liquid nitrogen be fully used.
The utility model is achieved through the following technical solutions:
A kind of liquid nitrogen vaporization cold recycling device, structure include liquid nitrogen storage tank, water tank and cold energy reclamation device, described
Cold energy reclamation device includes in cold energy reclamation device outer housing and cold energy reclamation device outer housing with water inlet and water out
The double pipe heat exchanger in portion, described sleeve pipe formula heat exchanger include double pipe heat exchanger outer tube and double pipe heat exchanger inner tube, casing
Formula inner tube of heat exchanger is made with double pipe heat exchanger outer tube of the corrosion resistant metal tube welding through electrochemical polish, described
The tube side of double pipe heat exchanger is exhaust gas passes, and tube-side inlet is gas inlet, and tube side outlet is offgas outlet, described sleeve pipe formula
The shell side of heat exchanger is liquid nitrogen access, and shell side inlet is liquid nitrogen entrance, and shell-side outlet is nitrogen outlet, the cold energy reclamation device
With composition water passage outside double pipe heat exchanger inside outer housing, the gas inlet, offgas outlet, liquid nitrogen entrance and nitrogen go out
Mouth draws cold energy reclamation device by pipeline, and the outlet of the water tank is connected with water pump, and exit of pump and water inlet pass through water pipe
Line connects, and thermostat valve is arranged on water pipeline, temperature sensor, temperature sensor and thermostat valve phase are arranged on the pipeline of water out
Even, the outlet of the liquid nitrogen storage tank is connected with liquid nitrogen entrance by liquid nitrogen pipeline, and valve is arranged on liquid nitrogen pipeline, and the cooling capacity is returned
Cold energy reclamation device outer housing insulating layer is set outside receiving apparatus outer housing.
In one better embodiment of the utility model, the tube bank of described sleeve pipe formula heat exchanger is four groups in parallel.
In one better embodiment of the utility model, the water out is connected with air-conditioning system.Water in water tank is through being subcooled
It after measuring recyclable device, is flowed out from water out, becomes process cooling water, supply cold source for air-conditioning system.Air-conditioning system includes flow
Meter, central air-conditioning cold water branched pipe, air-conditioning box, flowmeter are arranged on the pipeline of water out, flowmeter and central air-conditioning cold water
Branched pipe is connected, and central air-conditioning cold water branched pipe is connected with air-conditioning box.
In one better embodiment of the utility model, the offgas outlet is connected with gas-liquid separation device, gas-liquid separation dress
The gaseous phase outlet set is connected with exhaust gas processing device, and the liquid-phase outlet of gas-liquid separation device is connected with recyclable device.Tail gas is covering
The cooling capacity that liquid nitrogen vaporization generates is absorbed in heat exchange of heat pipe, can be with recycling and reusing after partial tail gas liquefaction, part is not liquefied
Tail gas enters exhaust treatment system and is reprocessed.
In one better embodiment of the utility model, the liquid nitrogen pipeline upper valve door is solenoid valve.
The utility model has the following beneficial effects: liquid nitrogen vaporization cold recycling device provided by the utility model, by liquid nitrogen
Gasification installation is integrated with vent gas treatment and technique water-cooling apparatus, can effectively by liquid nitrogen vaporization when generated cooling capacity
By way of heat exchange, exhaust treatment system and technical cooling water system are passed to, liquid nitrogen vaporization is adequately utilized and is produced
Raw cooling capacity.Simultaneously for save exhaust treatment system and technical cooling water system energy consumption, it is energy saving, reduce cost.Make
The flow for the adjusting liquid nitrogen that can be convenient with solenoid valve reduces labor intensity, improves work efficiency without manual operations.It is logical
The temperature sensor of setting at water out is crossed to control the aperture of water tank temp.-control valve, regulating pondage, prevents the temperature of water at any time
It is reduced to subzero and tube wall icing phenomenon occurs, guarantee the safety and steady operation of device.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the structural schematic diagram of the utility model liquid nitrogen vaporization cold recycling device；
Fig. 2 is the top cross-sectional view of the utility model cold energy reclamation device.
In figure: 1, water passage, 2, liquid nitrogen access, 3, exhaust gas passes, 4, water out, 5, offgas outlet, 6, gas inlet, 7,
Thermostat valve, 8, nitrogen outlet, 9, liquid nitrogen entrance, 10, valve, 11, liquid nitrogen storage tank, 12, water tank, 13, water pump, 14, water inlet,
15, temperature sensor, 16, flowmeter, 17, central air-conditioning cold water branched pipe, 18, air-conditioning box, 19, cold energy reclamation device, 20, set
Pipe heat exchanger, 21, cold energy reclamation device outer housing, 22, cold energy reclamation device outer housing insulating layer, 23, double pipe heat exchanger
Outer tube, 24, double pipe heat exchanger inner tube.
Specific embodiment
In order to deepen the understanding to the utility model, below in conjunction with specific embodiments and the drawings to the utility model make into
One step is described in detail.
Embodiment
As depicted in figs. 1 and 2, liquid nitrogen vaporization cold recycling device in the present embodiment, structure include liquid nitrogen storage tank 11,
Water tank 12 and cold energy reclamation device 19, the cold energy reclamation device 19 include the cold recovery with water inlet 14 and water out 4
Double pipe heat exchanger 20 inside crust of the device body 21 and cold energy reclamation device outer housing 21, the set of described sleeve pipe formula heat exchanger 20
Pipe heat exchanger inner tube 24 and double pipe heat exchanger outer tube 23 are welded by the corrosion resistant metal tube through electrochemical polish to be made
At the tube side of described sleeve pipe formula heat exchanger 20 is exhaust gas passes 3, and tube-side inlet is gas inlet 6, and tube side outlet is offgas outlet
5, the shell side of described sleeve pipe formula heat exchanger 20 is liquid nitrogen access 2, and shell side inlet is liquid nitrogen entrance 9, and shell-side outlet is nitrogen outlet
8, the gap between 21 inside of cold energy reclamation device outer housing and double pipe heat exchanger 20 constitutes water passage 1, the tail gas
Entrance 6, offgas outlet 5, liquid nitrogen entrance 9 and nitrogen outlet 8 draw cold energy reclamation device 19 by pipeline, and the water tank 12 goes out
Mouth is connected with water pump 13, and the outlet of water pump 13 is connect with water inlet 14 by water pipeline, and thermostat valve 7 is set on water pipeline, and water out 4 is managed
Temperature sensor 15 is set on line, temperature sensor 15 is connected with thermostat valve 7, the outlet of the liquid nitrogen storage tank 11 and liquid nitrogen entrance 9
It is connected by liquid nitrogen pipeline, liquid nitrogen pipeline sets valve 10, and setting cold recovery fills outside the cold energy reclamation device outer housing 21
Set outer housing insulating layer 22.
In the present embodiment, the tube bank of double pipe heat exchanger 20 is four groups in parallel.
In the present embodiment, water out 4 is connected with air-conditioning system, and air-conditioning system includes flowmeter 16, central air-conditioning cold water point
Branch pipe 17 and air-conditioning box 18.
In the present embodiment, offgas outlet 5 is connected with gas-liquid separation device, at the gaseous phase outlet and tail gas of gas-liquid separation device
It manages device to be connected, the liquid-phase outlet of gas-liquid separation device is connected with recyclable device.
In the present embodiment, liquid nitrogen pipeline upper valve door 10 is solenoid valve.
In use, the liquid nitrogen in liquid nitrogen storage tank 11 enters liquid nitrogen access 2, the liquid nitrogen in liquid nitrogen access 2 by liquid nitrogen entrance 9
It is vaporized into nitrogen.Nitrogen is discharged from nitrogen outlet 8, send to industrial gas.Water in water tank 12 enters water by water inlet 14
Access 1, in water passage 1, water absorbs the cooling capacity that liquid nitrogen vaporization generates, and temperature reduces, and becomes process cooling water.Process cooling water
It is discharged, send to air-conditioning system, the cold source as air-conditioning system from water out 4.Industrial tail gas enters tail gas by gas inlet 6 and leads to
Road 3, in exhaust gas passes 3, industrial tail gas absorbs the cooling capacity of liquid nitrogen vaporization generation, and partial tail gas liquefies at low temperature, part
Tail gas still keeps gaseous state.Low temperature exhaust gas is discharged from offgas outlet 5, send to gas-liquid separation device.The gas phase of gas-liquid separation device goes out
Mouth is connected with exhaust gas processing device, and the liquid-phase outlet of gas-liquid separation device is connected with recyclable device.Tail gas after liquefaction can return
It receives and recycles, partially enter exhaust treatment system without liquefied tail gas and reprocessed.Three accesses in cold energy reclamation device
Independently of each other, but between tail gas and liquid nitrogen, liquid nitrogen and water it can conduct heat, guarantee making full use of for vaporization cold amount of liquid nitrogen.
There is tube wall icing phenomenon to prevent the temperature of water to be reduced to subzero, increases by one in the present apparatus and control back
Road measures tube wall temperature value by temperature sensor 15.Temperature sensor 15 is located at water out 4.When tube wall temperature reduces
When to close to 0 DEG C, temperature sensor 15 controls thermostat valve 7 and increases aperture, increases the flow of water, so that tube wall temperature rises, no
Pipeline is caused to freeze.
In order to meet varying duty demand, a valve 10 is placed at liquid nitrogen pipeline, when load has fluctuation, valve 10 can
To adjust the flow of liquid nitrogen, to control the yield of cooling capacity, when the load is high, the flow of liquid nitrogen can be increased, needed for meeting,
When the load is low, by reducing the flow of liquid nitrogen, the cooling capacity of generation is also just corresponding to be reduced, and just meets refrigeration when underload
Dosage, this is also a kind of mode for meeting load fluctuation.
The above is only specific embodiment of the utility model, not does in any form to the utility model
Limitation be not intended to limit the utility model although the utility model is disclosed above with embodiment, for this field
Technical staff for, do not departing within the scope of technical solutions of the utility model, when using above-mentioned explanation technology contents work
A little equivalent embodiment changed or be modified to equivalent variations out.Within the spirit and principle of the utility model, made
Any modification, equivalent substitution, improvement and etc. should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of liquid nitrogen vaporization cold recycling device, structure includes liquid nitrogen storage tank (11), water tank (12) and cold recovery dress
Set (19), which is characterized in that the cold energy reclamation device (19) includes the cold recovery with water inlet (14) and water out (4)
The double pipe heat exchanger (20) of crust of the device body (21) and cold energy reclamation device outer housing (21) inside, described sleeve pipe formula heat exchanger
It (20) include double pipe heat exchanger outer tube (23) and double pipe heat exchanger inner tube (24), double pipe heat exchanger inner tube (24) and casing
Formula heat exchanger outer tube (23) is made of the corrosion resistant metal tube welding through electrochemical polish, described sleeve pipe formula heat exchanger
(20) tube side is exhaust gas passes (3), and tube-side inlet is gas inlet (6), and tube side outlet is offgas outlet (5), described sleeve pipe
The shell side of formula heat exchanger (20) is liquid nitrogen access (2), and shell side inlet is liquid nitrogen entrance (9), and shell-side outlet is nitrogen outlet (8),
The cold energy reclamation device outer housing (21) is internal to constitute water passage (1) with outside double pipe heat exchanger (20), and the tail gas enters
Mouth (6), offgas outlet (5), liquid nitrogen entrance (9) and nitrogen outlet (8) pass through pipeline and draw cold energy reclamation device (19), the water
The outlet of case (12) is connected with water pump (13), and water pump (13) outlet is connect with water inlet (14) by water pipeline, sets on water pipeline
It sets thermostat valve (7), temperature sensor (15) is set on the pipeline of water out (4), temperature sensor (15) and thermostat valve (7) phase
Even, the outlet of the liquid nitrogen storage tank (11) is connected with liquid nitrogen entrance (9) by liquid nitrogen pipeline, and valve is arranged on liquid nitrogen pipeline
(10), cold energy reclamation device outer housing insulating layer (22) is set outside the cold energy reclamation device outer housing (21).
2. a kind of liquid nitrogen vaporization cold recycling device according to claim 1, which is characterized in that the heat exchange of described sleeve pipe formula
The tube bank of device (20) is four groups in parallel.
3. a kind of liquid nitrogen vaporization cold recycling device according to claim 1, which is characterized in that the water out (4)
It is connected with air-conditioning system.
4. a kind of liquid nitrogen vaporization cold recycling device according to claim 3, which is characterized in that the air-conditioning system packet
Flowmeter (16), central air-conditioning cold water branched pipe (17), air-conditioning box (18) are included, the pipe in water out (4) is arranged in flowmeter (16)
On line, flowmeter (16) is connected with central air-conditioning cold water branched pipe (17), central air-conditioning cold water branched pipe (17) and air-conditioning box
(18) it is connected.
5. a kind of liquid nitrogen vaporization cold recycling device according to claim 1, which is characterized in that the offgas outlet
(5) it is connected with gas-liquid separation device, the gaseous phase outlet of gas-liquid separation device is connected with exhaust gas processing device, gas-liquid separation device
Liquid-phase outlet is connected with recyclable device.
6. a kind of liquid nitrogen vaporization cold recycling device according to claim 1, which is characterized in that on the liquid nitrogen pipeline
The valve (10) of setting is solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854351.9U CN209131215U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen vaporization cold recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854351.9U CN209131215U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen vaporization cold recycling device |
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| Publication Number | Publication Date |
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| CN209131215U true CN209131215U (en) | 2019-07-19 |
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| CN201821854351.9U Active CN209131215U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen vaporization cold recycling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458780A (en) * | 2018-11-12 | 2019-03-12 | 辽宁工业大学 | A kind of liquid nitrogen vaporization cold recycling device |
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- 2018-11-12 CN CN201821854351.9U patent/CN209131215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458780A (en) * | 2018-11-12 | 2019-03-12 | 辽宁工业大学 | A kind of liquid nitrogen vaporization cold recycling device |
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