CN105889753A - Cold-heat exchange system for industrial gas production - Google Patents
Cold-heat exchange system for industrial gas production Download PDFInfo
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- CN105889753A CN105889753A CN201410665761.9A CN201410665761A CN105889753A CN 105889753 A CN105889753 A CN 105889753A CN 201410665761 A CN201410665761 A CN 201410665761A CN 105889753 A CN105889753 A CN 105889753A
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- cold
- heat exchange
- heat exchanger
- exchange system
- cooling
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Abstract
The invention discloses a cold-heat exchange system for industrial gas production. The cold-heat exchange system comprises a cooling water circulating system with a cooling tower, and a low-temperature liquid conveying system, wherein a heat exchanger is connected between the two systems for carrying out heat exchange; the heat exchanger comprises a barrel body with cooling water, and is connected with the cooling tower in parallel through water inlet and outlet tubes; the heat exchanger is further in parallel connection between a low-temperature storage tank of the liquid-temperature liquid conveying system and a vaporizer through the water inlet and outlet tubes; and a spiral circulating heating tube is arranged between the water inlet and outlet tubes. According to the cold-heat exchange system, a great deal of energy consumption needed for cooling water cooling and vaporizer icing improving is saved, normal production can be guaranteed, and potential safety hazards are eliminated; and operation and maintenance cost of equipment is greatly reduced.
Description
Technical field
The present invention relates to industrial gases produce, concretely relate to the cold-heat exchange system that industrial gases produce.
Background technology
In the production of industrial gases, when using liquid oxygen to carry out cylinder filling and pipeline conveying, temperature required it is
0 DEG C-40 DEG C, if ambient temperature is less than 10 DEG C, particularly when winter, due to low temperature air vaporizer
Exchange capability of heat limited, carburettor icing is serious, can cause when vaporizer outlets pipe is less than 0 DEG C stopping production, often
Often impact is normal to be produced, and there is potential safety hazard because of the too low easy bursting by freezing conveyance conduit of temperature.For solving this problem,
The method typically used is with Water spray and several big exhaust fan purgings, to strengthen scattering and disappearing of carburator cold,
Though so there being certain effect, but to expend substantial amounts of water and electricity, energy consumption is high.And producing oxygen, argon, sky
Need to use substantial amounts of air compressor machine during the products such as gas, and be water-cooled, the compressor longtime running of air compressor machine,
Need preferably to cool down water condition (20 DEG C), owing to load is excessive, the multiple stage cooling of the cooling system of circulating water pool
Tower can not meet cooling needs, and cooling water temperature is higher, and particularly cooling pond in summer temperature is up to 40 DEG C,
Temperature drift when causing compressor operation, oxygen making unit cycle of operation shortens, and production capacity declines, and energy consumption rises, auxiliary
Material, spare part use the cycle significantly to shorten, and maintenance cost rises；When cooling water temperature is too high, only add temperature
Spend low tap water, add again the consumption of water.
Summary of the invention
The technical problem to be solved is the cold-heat exchange system providing a kind of industrial gases to produce, it
It is not required to produce new energy consumption and just can reduce the cooling water temperature of cooling water recirculation system, and improve entrance low temperature sky bath
The temperature of formula carburator liquid-state industrial gas, carburator is not-easy-to-freeze, stops cryogenic transfer pipes and sends out because of bursting by freezing
Raw security incident.
Technical scheme is as follows: the cold-heat exchange system that a kind of industrial gases produce, including being provided with cooling
The cooling water recirculation system of tower and cryogenic liquid transfer system, have heat exchanger to carry out connecting between system described in two
Heat exchanges；Described heat exchanger includes the cylinder equipped with cooling water and passes through inlet tube and outlet tube with described cooling tower also
Connection；Described heat exchanger is connected in parallel on refrigerated storage tank and the vapour of described cryogenic liquid transfer system also by liquid inlet and outlet pipe
Change between device, be the circulating-heating pipe spiraled between described liquid inlet and outlet pipe；On described inlet tube and outlet tube and
Branch road between described cooling tower and water inlet pipe is provided with open and close valve, on institute's liquid inlet and outlet pipe and with heat exchange
The cryogenic liquid conveyance conduit of device parallel connection is provided with open and close valve.
Do further scheme, hot-tub that described cooling water recirculation system includes being sequentially connected with, heat-exchanger pump,
Cooling tower, water cooling pond and water supply pump, and air-compressor set and oxygen making unit, described air-compressor set and oxygen making unit
It is in parallel and is connected between described water supply pump and hot-tub.
Further, according to the feature of institute's pumped (conveying) medium, each open and close valve set on described cooling water pipeline is
Ball valve, the cryogenic globe valve that each open and close valve is stainless steel set on described cryogenic liquid conveyance conduit.
As the further improvement to technique scheme, described circulating-heating pipe is along described heat exchanger drum shaft
To the rectangular disk coil of convolution, described rectangular disk coil is fixed with described cylinder by support bar.Pass through support bar
The fixing stability that can improve circulating-heating pipe；Axially the rectangular disk coil of convolution is not required to use bending machine to carry out greatly
R processes, convenient processing, and reduces processing cost；And rectangular disk coil also can make cryogenic media in heat exchanger tube
Stay longer, improves the heat transfer effect of cryogenic media.
As the further improvement to technique scheme, described cryogenic liquid conveyance conduit is stainless steel tube, with
Corrosion-resistant.
As the further improvement to technique scheme, described water inlet pipe and feed tube lay respectively at described heat exchange
Two of device cylinder, uses liquid reverse flow heat exchange, and countercurrent flow, the temperature difference along heating surface two fluid is divided
Cloth is more uniform, and mean temperature difference is big, good effect of heat exchange.
As the further improvement to technique scheme, be provided with at the top of described heat exchanger cylinder air bleeding valve and
Observation port, air bleeding valve is used for being vented gas in cylinder, makes cooling water can be full of heat exchanger tube, and observation port is used for observing
Heat exchanger tube inner cooling water service condition, whether cooling water has icing phenomenon.
As the further improvement to technique scheme, it is provided with drain valve in the bottom of described heat exchanger cylinder,
So that when heat-exchange system does not uses, the cooling water in heat exchanger is bled off, prevent cooling down water and freeze in cylinder.
The feature of different-energy needed for two systems when the present invention produces according to industrial gases, contemplating whole production is
The heat converting system of system.One heat exchanger is installed between low-temperature storage tank and carburator, and makes heat exchanger with cold
But tower parallel connection replaces cooling tower work, makes two systems each obtain required energy, alleviates in case devaporation device freezes
Frosting and the problem reducing cooling water use temperature.After the use of oxygen making unit compressor, air compression station air compressor machine out
Circulating water temperature higher, utilize the pressure of heat-exchanger pump, make low-temperature liquid pipe absorption cycle water pipe through heat exchanger
The heat in road, thus improve the temperature of cryogenic liquid, reduce load for carburator, create more preferable working condition,
Improve the icing phenomenon of carburator, it is thus achieved that the recirculated water after cold, return to water cooling pond, for compressor.
Wherein, the flow direction of cryogenic liquid: cryogenic liquid storage tank → heat exchanger → carburator → use gas unit；
The flow direction of recirculated cooling water: hot-tub → heat-exchanger pump → heat exchanger → water cooling pond → water supply pump → oxygenerator
(or air compressor machine) → hot-tub.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, utilize heat exchanger to make recirculated water obtain cold, reduce the temperature of circulating water pool cooling water, improve
The service condition of air compressor machine and oxygen making unit；
2, utilize heat exchanger to make the cryogenic liquid in pipeline obtain heat, improve cryogenic liquid in pipeline
Temperature, improves the service condition of carburator, improves carburettor icing, it is ensured that normally produce, and eliminates safety hidden
Suffer from；
3, save cooling water temperature, improve a large amount of water required for carburettor icing, electric energy consumption, and significantly
The operation of reduction equipment, maintenance cost.
Accompanying drawing explanation
Fig. 1 is the workflow schematic diagram of the present invention.
Fig. 2 is the structural representation of present invention heat exchanger embodiment.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the schematic perspective view of circulating-heating pipe in Fig. 2.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As it is shown in figure 1, the cold-heat exchange system that a kind of industrial gases produce, including cooling water recirculation system and low
Geothermal liquid induction system.Wherein, cooling water recirculation system includes being sequentially connected with hot-tub 1, heat-exchanger pump 2,
Cooling tower 3, water cooling pond 4 and water supply pump 5, and air-compressor set 6, oxygen making unit 7, pipeline and valve, empty
The air compressor machine of press group 6 and the oxygenerator of oxygen making unit 7 are all connected in parallel between water supply pump 5 and hot-tub 1；And
Cryogenic liquid transfer system then includes refrigerated storage tank 12, carburator 13 pipeline and valve, connects between the two systems
It is connected to heat exchanger 8 and carries out heat exchange.As shown in Figure 1 and Figure 2, heat exchanger 8 includes the cylinder equipped with cooling water
Body 81, cylinder 81 is first to be rolled by steel plate to be welded as cylinder, it is possible to for seamless steel pipe, then two ends are again by envelope
The hermetic container that head closure is formed, cylinder 81 is fixed on support 88.Be provided with at cylinder 81 two into,
Outlet pipe 10,11, the entery and delivery port 86,87 of inlet tube and outlet tube 10,11 is respectively provided at the end of cylinder 81
Portion and top.Heat exchanger 8 is in parallel with cooling tower 3 by inlet tube and outlet tube 10,11, and water inlet pipe 10 is connected to
Between heat-exchanger pump 2 and cooling tower 3, outlet pipe 11 is then connected with water cooling pond 4.At the top of cylinder 81 also
Being provided with air bleeding valve 83 and observation port 84, air bleeding valve 83 is used for being vented gas in cylinder 81, makes cooling water to fill
Full cylinder 81, observation port 84 for observing the service condition of cylinder 81 inner cooling water, observation port 84 aperture by
Lucite is had to close.It is additionally provided with drain valve 85, for discharge drum inner cooling water in the bottom of cylinder 81.
As shown in Figure 1 and Figure 2, to be connected in parallel on cryogenic liquid also by liquid inlet and outlet pipe 91,93 defeated for heat exchanger 8
Sending between the refrigerated storage tank 12 of system and carburator 13, liquid inlet and outlet pipe 91,93 is respectively from the two of cylinder 81
End penetrates, and inlet is less than liquid outlet (as shown in Figure 2), spirals between liquid inlet and outlet pipe 91,93
Circulating-heating pipe 92.As shown in Figures 2 to 4, circulating-heating pipe 92 is axially to return along heat exchanger cylinder 81
The rectangular disk coil of rotation, rectangular disk coil is arranged symmetrically with in cylinder 81 inner circumferential.Between each spiral tube and
Between spiral tube and cylinder 81, it is welded with the support bar that stainless steel tube is made, makes the installation of circulating-heating pipe 9
More firm.Water inlet pipe 10 and feed tube 91 lay respectively at two of cylinder 81, use liquid reverse flow
Heat exchange, so makes the two fluid temperature difference distribution uniform along heating surface, and mean temperature difference is big, good effect of heat exchange.
As it is shown in figure 1, required for control controlling flow direction and maintenance, on inlet tube and outlet tube 10,11 and
Branch road between cooling tower 3 and water inlet pipe 10 is provided with open and close valve, and these open and close valves are ball valve；Entering,
It is provided with open and close valve on drain pipe 91,93 and on the cryogenic liquid conveyance conduit 9 in parallel with heat exchanger 8,
The cryogenic globe valve that each open and close valve is stainless steel set on these cryogenic liquid conveyance conduits, at low temperature
Each pipeline (including feed tube 91, circulating-heating pipe 92 and drain pipe 93) in liquid conveying system is corrosion resistant
The stainless steel tube of erosion.
The cold-heat exchange system in industrial gases production that the present embodiment is provided is so work: such as Fig. 1
Shown in, close the first cryogenic globe valve 14, open the second cryogenic globe valve 15 (normally open valve) and the 3rd low temperature cuts
Only valve 16 (normally open valve), thus close former cryogenic liquid conveyance conduit, cryogenic liquid by feed tube 91 through second
Cryogenic globe valve 15 enters heat exchanger 8, low through the 3rd by drain pipe 93 after being heated by circulating-heating pipe 92
Temperature stop valve 16 flows back to cryogenic liquid conveyance conduit, enters carburator 13 temperature of liquid and has risen, carburator
Surface is difficult to icing, frost occur, and vaporization efficency is high；Open the first ball valve 17 (normally open valve), second
Ball valve 18 (normally open valve), in cooling water recirculation system, the recirculated water after oxygen making unit, air-compressor set use arrives
Reach hot-tub 1, then entered heat exchanger 8 by water inlet pipe 10 through the first ball valve 17 through heat-exchanger pump 2, cool down water quilt
After circulating-heating pipe 92 will be lowered the temperature, outlet pipe 11 flow back to water cooling pond 4, water cooling pond 4 through the second ball valve 18
Middle cooling water is circulated feeding oxygen making unit 6, air-compressor set 7 reciprocation cycle by water supply pump 5 again.
If in summer, when only the heat exchange amount by heat exchanger 8 effectively can not reduce cooling water temperature, can allow each
Cooling tower rotation work, reduces water temperature.
Claims (8)
1. the cold-heat exchange system that industrial gases produce, it is characterised in that: include being provided with cooling tower (3)
Cooling water recirculation system and cryogenic liquid transfer system, have heat exchanger (8) to carry out connecting between system described in two
Heat exchanges；Described heat exchanger (8) includes the cylinder (81) equipped with cooling water and by inlet tube and outlet tube (10,11)
In parallel with described cooling tower (3)；Described heat exchanger (8) is connected in parallel on described low also by liquid inlet and outlet pipe (91,93)
Between refrigerated storage tank (12) and the carburator (13) of geothermal liquid induction system, described liquid inlet and outlet pipe (91,93)
Between be the circulating-heating pipe (92) spiraled；Described inlet tube and outlet tube (10,11) is provided with open and close valve, in institute
Liquid inlet and outlet pipe (91,93) is upper and is provided with out on the cryogenic liquid conveyance conduit (9) in parallel with heat exchanger (8)
Valve closing.
The cold-heat exchange system that industrial gases the most according to claim 1 produce, it is characterised in that: described
Hot-tub (1) that cooling water recirculation system includes being sequentially connected with, heat-exchanger pump (2), cooling tower (3), water cooling pond (4)
With water supply pump (5), and air-compressor set (6) and oxygen making unit (7), the air compressor machine of described air-compressor set (6) and system
The oxygenerator of oxygen unit (7) is all connected in parallel between described water supply pump (5) and hot-tub (1).
The cold-heat exchange system that industrial gases the most according to claim 1 produce, it is characterised in that: in institute
Stating each open and close valve set on cooling water pipeline is ball valve, set respectively opening on described cryogenic liquid conveyance conduit
Valve closing is the cryogenic globe valve of stainless steel.
The cold-heat exchange system that industrial gases the most according to claim 1 produce, it is characterised in that: described
Circulating-heating pipe (92) is the rectangular disk coil along the axially convolution of described heat exchanger cylinder (81), and described rectangle spirals
Pipe is fixed with described cylinder (81) by support bar (82).
5. the cold-heat exchange system produced according to the industrial gases described in claim 1 or 3, it is characterised in that:
Described cryogenic liquid conveyance conduit is stainless steel tube.
The cold-heat exchange system that industrial gases the most according to claim 1 produce, it is characterised in that: described
Water inlet pipe (10) and feed tube (91) lay respectively at two of described heat exchanger t body (81), use liquid reverse flow
Move heat.
7. the cold-heat exchange system produced according to the industrial gases described in claim 1 or 4 or 6, its feature exists
In: it is provided with air bleeding valve (83) and observation port (84) at the top of described heat exchanger cylinder (81).
8. the cold-heat exchange system produced according to the industrial gases described in claim 1 or 4 or 6, its feature exists
In: it is provided with drain valve (85) in the bottom of described heat exchanger cylinder (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665761.9A CN105889753A (en) | 2014-11-07 | 2014-11-07 | Cold-heat exchange system for industrial gas production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665761.9A CN105889753A (en) | 2014-11-07 | 2014-11-07 | Cold-heat exchange system for industrial gas production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889753A true CN105889753A (en) | 2016-08-24 |
Family
ID=56698517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410665761.9A Pending CN105889753A (en) | 2014-11-07 | 2014-11-07 | Cold-heat exchange system for industrial gas production |
Country Status (1)
| Country | Link |
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| CN (1) | CN105889753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466118A (en) * | 2021-07-02 | 2021-10-01 | 兰州城市学院 | Corrosion test device for petroleum conveying equipment |
-
2014
- 2014-11-07 CN CN201410665761.9A patent/CN105889753A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466118A (en) * | 2021-07-02 | 2021-10-01 | 兰州城市学院 | Corrosion test device for petroleum conveying equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |