CN208443098U - The air separation unit that big amount of liquid is produced - Google Patents
The air separation unit that big amount of liquid is produced Download PDFInfo
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- CN208443098U CN208443098U CN201821103164.7U CN201821103164U CN208443098U CN 208443098 U CN208443098 U CN 208443098U CN 201821103164 U CN201821103164 U CN 201821103164U CN 208443098 U CN208443098 U CN 208443098U
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Abstract
The utility model relates to a kind of air separation units that big amount of liquid is produced, including air filter, air compressor machine, purification unit, supercharger, high-low temperature supercharging turbo-expander and cryogenic separation cold box unit, compressed air part is directly through the laggard lower tower that exchanges heat, part cooling after supercharger is pressurized throttles into Xia Ta, the double laggard lower towers of expansion of double pressurizations of the air through high-low temperature supercharging turbo-expander are taken out in supercharger, product oxygen nitrogen uses double pump internal pressure process, argon producing system uses oxygen-enriched liquid air infinite reflux form, using being taken out in pressurized air, the double pressurizations of high-low temperature supercharging turbo-expander are double to be expanded into Xia Ta, product oxygen nitrogen double pump Internal-compression flow and argon producing system infinite reflux form, admirably meets the needs of big amount of liquid space division High cooling power, make full use of the circulation of logistics, reduce equipment, reduce energy consumption, improve recovery rate.
Description
Technical field
The utility model relates to cryogenic air separation technology fields, fill more particularly, to a kind of space division that big amount of liquid is produced
It sets.
Background technique
With the fast development of steel and chemical industry, also have to the industrial gasses such as demand of oxygen, nitrogen and argon gas
Very big growth, especially same user rise jointly in demand of the different production phases to gaseous state and liquid form product.Gaseous state
Product has many advantages, such as that supply conveniently and quickly utilizes, and liquid form product has convenient for storage transport.Conventional external compression is empty
Separating device can at most produce 10% liquid product, and compression air separation device can at most produce 20% liquid product in routine.Over the past two years
It is limited by the mandatory requirement of Government Eco environmental protection, the productive prospecting of some enterprises is forced to change, the requirement to air separation unit
Also it is changing therewith, i.e., is meeting nominal gas product demand simultaneously, take into account the production of big amount of liquid again.Collecting in recent years
Also there are many gas companies centralizedly supply gases in the higher chemical industrial park of middleization degree, and in enterprise, gas is public during normal production
Production and supply gas is taken charge of, gas companies produce a large amount of liquid product and transport outward again by tank car to export trade when enterprise is reduced and produces
It sells.Conventional gas air separation unit and conventional full liquid air separation unit are not obviously able to satisfy the production needs of enterprise and gas companies,
The increase that will cause plant energy consumption, is unfavorable for energy-saving and emission-reduction and ecological environmental protection.Under these circumstances, big amount of liquid is produced
The research and development of air separation unit have become a kind of trend.This air separation unit had not only met the requirement of conventional gas product, but also can be same
When the advantages of producing about 50% liquid product, having merged conventional gas air separation unit and conventional full liquid air separation unit, gas products
The different demands for meeting user simultaneously with liquid product, improve the situation of gas-liquid unevenness between supply and demand, and sale liquid form product is brought again
Higher economic benefit.
The core of Cryogenic air separation method is to realize gas in rectifying column using the difference of each component boiling point in air
The separation of mixture, the basic principle is that using expanding machine adiabatic expansion refrigeration and Joule-Thomson throttling refrigeration effect, one
The plant air of constant-pressure generates lower temperature by expansion and throttling, recycles cooling capacity by heat exchange, can be by each group in air
It separates to obtain gas and liquid product.The cooling capacity of whole system is largely guaranteed by expanding machine adiabatic expansion.In order to
It prevents impurity composition in air from solidifying to block heat exchanger and pipeline at low temperature, therefore is just needed with low temperature process separation air
Air is pre-processed before entering ice chest, and what is contained in removing component at low temperature can cured component, such as CO2And H2O。
The raw material of air separation unit is atmosphere, and main consumption is electric energy, especially to the air separation unit energy consumption of big amount of liquid
Height it is more crucial, therefore how to further decrease energy consumption in this device and be particularly important.For using low temperature essence
The air separation unit evaporated, energy consumption and recovery rate are also the major parameter of evaluating apparatus economic indicator and technical indicator.To needing simultaneously
For the user of the air separation unit of gas and big amount of liquid, reduces the energy consumption of device and improve recovery rate, can effectively meet life
Production cost is reduced when production needs, and is beneficial to energy conservation emission reduction and ecological environmental protection.
Compression space division process mainly has inflated with low pressure into upper tower process and middle compression swelling into lower tower process at present.Low pressure is swollen
It is swollen to produce that amount of liquid is seldom into upper tower process, it is not able to satisfy the requirement of big amount of liquid；Middle compression swelling is produced into lower tower process
Amount of liquid is about 20%, needs to increase many air capacities to produce big amount of liquid, increases the energy consumption of device.
Summary of the invention
It is double that a kind of high/low temperature expanding machine is provided the purpose of the utility model is to overcome above-mentioned in the prior art insufficient
Expand into lower tower process, take into account the air separation unit that big amount of liquid is produced while preparing gas product, reduce operating cost and
Plant energy consumption.
The technical solution of the utility model is achieved in that a kind of air separation unit that big amount of liquid is produced, including air
Filter, air compressor, air purge unit, air booster, low temperature machine pressurized end and cryogenic expansion machine expanding end, low temperature
Machine pressurized end cooler, high temperature machine pressurized end and high temperature expander expanding end, high temperature machine pressurized end cooler and cryogenic separation are cold
Box unit, the cryogenic separation cold box unit include main heat exchanger, lower tower, condenser/evaporator, upper tower, subcooler, liquid nitrogen pump, liquid
Oxygen pump, crude argon column I, crude argon column II, circulation liquid argon pump, pure argon column and throttle valve, the crude argon column I include at the top of tower body and tower body
Condenser, the pure argon column includes the evaporator of tower body, the condenser at the top of tower body and tower body bottom, the air compressor
Entrance inputs raw material atmosphere through air filter, and the air compressor outlet passes through first pipe and the air purge unit
Entrance is connected, and the air purge unit outlet is respectively communicated with second pipe and third pipeline, and the second pipe is changed through master
Hot device is connected with the lower tower bottom entrance, and the third pipeline is connected with the air booster entrance, the air
Supercharger outlet is connected through main heat exchanger and the 5th throttle valve with the middle and lower part Xia Ta entrance by the 4th pipeline, under described
Tower bottom outlet is by the 11st pipeline through subcooler, evaporator of pure argon column and first throttle valve and I condenser of crude argon column
Entrance is connected, and the middle and lower part Xia Ta outlet is respectively communicated with the 12nd pipeline and the 13rd pipeline through subcooler, and the described tenth
Two pipelines are connected through second throttle with the upper tower centre entrance, and the 13rd pipeline is through third throttle valve and the essence
Argon column condenser entrance is connected, and the lower top of tower outlet is connected by the 14th pipeline with the condenser/evaporator entrance
Logical, the condenser/evaporator lower part outlet connects 1 the 15th pipeline, and the 15th pipeline is respectively communicated with the 16th, the 17th
With the 18th pipeline, the 16th pipeline is connected with the lower top of tower entrance, the 17th pipeline through liquid nitrogen pump and
Main heat exchanger goes out the cryogenic separation cold box unit, and the 18th pipeline is respectively communicated with the 19th pipeline and second through subcooler
Ten pipelines, the 19th pipeline are connected through the 4th throttle valve with the upper tower upper entrance, and the 20th pipeline goes out institute
Cryogenic separation cold box unit is stated, the condenser/evaporator outlet at bottom is respectively communicated with the 21st pipeline and the 22nd pipeline,
21st pipeline goes out the cryogenic separation cold box unit through liquid oxygen pump and main heat exchanger, and the 22nd pipeline goes out institute
Cryogenic separation cold box unit is stated, upper the 23rd pipeline of top of tower outlet, the 23rd pipeline is through subcooler
And main heat exchanger goes out cryogenic separation cold box unit and is connected with the air purge unit, the upper tower bottom connection one the 20th
Four pipelines, the 24th pipeline are docked with the 23rd pipeline, and the upper tower middle and lower part outlet passes through the 31st
Pipeline is connected with II bottom inlet of crude argon column, passes through the 32nd pipeline and the crude argon column at the top of the crude argon column II
I bottom is connected, and I bottom of crude argon column is connected through circulation liquid argon pump with II top of crude argon column by the 33rd pipeline
Logical, II bottom of crude argon column is connected by the 34th pipeline with the upper tower middle and lower part entrance, and the crude argon column I condenses
Device outlet is respectively communicated with the 35th and the 36th pipeline, and the 35th pipeline is connected with I top of crude argon column,
It is connected in the middle part of 36th pipeline and the pure argon column, I condenser overhead of crude argon column passes through the 37th pipeline
It is connected with the upper tower centre entrance, one the 38th pipeline of pure argon column condenser top connection, the described 38th
Pipeline is docked with the 37th pipeline, one the 39th pipeline of the pure argon column condenser overhead connection, and the described 30th
Nine pipelines go out the cryogenic separation cold box unit, and the evaporator of pure argon column bottom connects one the 40th pipeline, and the described 40th
Pipeline goes out the cryogenic separation cold box unit.
The lower tower is sieve-plate tower or regular packed tower, and the upper tower, crude argon column I, crude argon column II and pure argon column are regular
Packed tower.The main heat exchanger, condenser/evaporator, subcooler, I condenser of crude argon column, evaporator of pure argon column and condenser are
Vacuum brazing plate-fin heat exchanger.
Outlet port in the air booster setting one, the middle outlet port are respectively communicated with the 5th pipeline and the 6th pipeline,
5th pipeline is successively pressurized through the low temperature machine pressurized end, low temperature machine pressurized end cooler, high temperature machine pressurized end, high temperature machine
End cooler, main heat exchanger, cryogenic expansion machine expanding end are connected with the lower tower bottom entrance, and the 6th pipeline successively passes through
Main heat exchanger, high temperature expander expanding end, main heat exchanger are connected with the lower tower bottom entrance.
A liquid air refluxing opening is arranged in the I condenser bottom of crude argon column, and the liquid air refluxing opening connects the 41st pipeline,
41st pipeline is connected with the upper tower centre entrance, and a liquid air overflow is arranged in the I condenser top of crude argon column
Mouthful, the liquid air overflow port connects one the 42nd pipeline, and the 42nd pipeline is connected with the 41st pipeline.
What the technical solution of the utility model generated has the beneficial effect that: the device refrigeration system uses low-temperature turbine boosting
Two kinds of specifications of expanding machine and high temperature pressurised turbo-expander, and order of placement low temperature machine pressurized end 5 is in preceding, high temperature machine pressurized end 7
Rear, be conducive to the stable operation of expanding machine, make full use of turbo-expander expansion work also to press air in being pressurized again；High temperature
Expander end 10 is using air is pressed in the room temperature after cooling of main heat exchanger 11, cryogenic expansion machine expanding end 9 is using through low
Warm machine pressurized end 5 and high temperature machine pressurized end 7 are pressurized and the pressure-air of low temperature is cooled to through main heat exchanger 11.High/low temperature is swollen
Swollen machine uses the inflating medium of different qualities, gives full play to its refrigeration effect, admirably meets big amount of liquid air separation unit institute
The cooling capacity needed.
I 19 condenser of device crude argon column uses infinite reflux, that is, all into pure argon column after descending tower bottom oxygen-enriched liquid air to be subcooled
21 evaporators do heat source, then enter I 19 condenser of crude argon column after the throttling of first throttle valve 22 and make cold source, are then refluxed for supreme tower
14 middle parts participate in rectifying, take full advantage of the potential of oxygen-enriched liquid air, and change previous traditional using lower pressure tower nitrogen conduct
The way of evaporator of pure argon column heat source saves processing air capacity, saves energy consumption.
The lower tower 12 uses efficient convection current double overflow sieve-plate tower, and rectification efficiency is high；The upper tower 14 and argon column, which use, to be filled out
Expect tower, rectification effect is good, and operating flexibility is big, is suitable for Off-design operation, and adapt to the biggish operating condition of gas liquid ratio.
Detailed description of the invention
Fig. 1 is the attachment structure schematic diagram of a kind of big amount of liquid air separation unit produced of the utility model and method.
1, air filter, 2, air compressor, 3, air purge unit, 4, air booster, 5, low temperature machine pressurized end,
6, low temperature machine pressurized end cooler, 7, high temperature machine pressurized end, 8, high temperature machine pressurized end cooler, 9, cryogenic expansion machine expanding end,
10, high temperature expander expanding end, 11, main heat exchanger, 12, lower tower, 13, condenser/evaporator, 14, upper tower, 15, subcooler, 16, liquid
Nitrogen pump, 17, liquid oxygen pump, 18, crude argon column I, 19, crude argon column II, 20, circulation liquid argon pump, 21, pure argon column, 22, first throttle valve,
23, second throttle, 24, third throttle valve, the 25, the 4th throttle valve, the 26, the 5th throttle valve, 27, cryogenic separation cold box unit,
101, first pipe, 102, second pipe, 103, third pipeline, the 104, the 4th pipeline, the 105, the 5th pipeline, the 106, the 6th pipe
Road, the 111, the 11st pipeline, the 112, the 12nd pipeline, the 113, the 13rd pipeline, the 114, the 14th pipeline, the 115, the 15th pipe
Road, the 116, the 16th pipeline, the 117, the 17th pipeline, the 118, the 18th pipeline, the 119, the 19th pipeline, the 120, the 20th pipe
Road, the 121, the 21st pipeline, the 122, the 22nd pipeline, the 123, the 23rd pipeline, the 124, the 24th pipeline, 131,
31 pipelines, the 132, the 32nd pipeline, the 133, the 33rd pipeline, the 134, the 34th pipeline, the 135, the 35th pipe
Road, the 137, the 37th pipeline, the 138, the 38th pipeline, the 139, the 39th pipeline, the 140, the 40th pipeline, the 141, the 4th
11 pipelines, the 142, the 42nd pipeline.
Specific embodiment
Combined with specific embodiments below and attached drawing is further elaborated and illustrates to the utility model.
As shown in Figure 1, a kind of air separation unit that big amount of liquid is produced, including air filter 1, air compressor 2, air
Purification unit 3, air booster 4, low temperature machine pressurized end 5 and cryogenic expansion machine expanding end 9, low temperature machine pressurized end cooler 6, height
Warm machine pressurized end 7 and high temperature expander expanding end 10, high temperature machine pressurized end cooler 8 and cryogenic separation cold box unit 27, it is described
Cryogenic separation cold box unit 27 includes main heat exchanger 11, lower tower 12, condenser/evaporator 13, upper tower 14, subcooler 15, liquid nitrogen pump
16, liquid oxygen pump 17, crude argon column I 18, crude argon column II 19, circulation liquid argon pump 20, pure argon column 21 and first throttle valve 22, second throttle
Valve 23, third throttle valve 24, the 4th throttle valve 25, the 5th throttle valve 26, the crude argon column I 18 include at the top of tower body and tower body
Condenser, evaporator of the pure argon column 21 including condenser and tower body bottom at the top of tower body, tower body, the air compressor
2 entrances input raw material atmosphere through air filter 1, and the outlet of air compressor 2 is pure by first pipe 101 and the air
Change 3 entrance of unit to be connected, the outlet of air purge unit 3 is respectively communicated with second pipe 102 and third pipeline 103, described
Second pipe 102 is connected through the main heat exchanger 11 with lower 12 bottom inlet of tower, the third pipeline 103 and the sky
4 entrance of gas supercharger is connected, and the outlet of air booster 4 is by the 4th pipeline 104 through the main heat exchanger 11 and the 5th
Throttle valve 26 is connected with the lower 12 middle and lower part entrance of tower, and lower 12 outlet at bottom of tower is by the 11st pipeline 111 through institute
It states subcooler 15,21 evaporator of pure argon column and first throttle valve 22 to be connected with I 18 condenser inlet of crude argon column, under described
The outlet of 12 middle and lower part of tower is respectively communicated with the 12nd pipeline 112 and the 13rd pipeline 113, the 12nd pipeline through subcooler 15
112 are connected through second throttle 23 with upper 14 centre entrance of tower, the 13rd pipeline 113 through third throttle valve 24 with
21 condenser inlet of pure argon column is connected, and lower 12 top exit of tower is steamed by the 14th pipeline 114 with the condensation
Hair 13 entrance of device is connected, and 13 lower part outlet of condenser/evaporator connects 1 the 15th pipeline 115, the 15th pipeline
115 are respectively communicated with the 16th pipeline 116, the 17th pipeline 117 and the 18th pipeline 118, the 16th pipeline 116 with it is described
Lower 12 top entry of tower is connected, and the cryogenic separation is cold out through liquid nitrogen pump 16 and main heat exchanger 11 for the 17th pipeline 117
Box unit 27, the 18th pipeline 118 is respectively communicated with the 19th pipeline 119 and the 20th pipeline 120 through subcooler 15, described
19th pipeline 119 is connected through the 4th throttle valve 25 with upper 14 upper entrance of tower, and the 20th pipeline 120 goes out described
Cryogenic separation cold box unit 27,13 outlet at bottom of condenser/evaporator are respectively communicated with the 21st pipeline 121 and the 22nd
Pipeline 122, the 21st pipeline 121 go out the cryogenic separation cold box unit 27, institute through liquid oxygen pump 17 and main heat exchanger 11
It states the 22nd pipeline 122 and goes out the cryogenic separation cold box unit 27, upper 14 top exit of tower is connected to the 23rd pipeline
123, the 23rd pipeline 123 goes out cryogenic separation cold box unit 27 through subcooler 15 and main heat exchanger 11 and the air is pure
Change unit and be connected 3, upper 14 bottom of tower connects one the 24th pipeline 124, the 24th pipeline 124 and described the
The docking of 23 pipelines 123, upper 14 middle and lower part of the tower outlet pass through the 31st pipeline 131 and II 19 bottom of crude argon column
Entrance is connected, and II 19 top of crude argon column is connected by the 32nd pipeline 132 with I 18 bottom of crude argon column, institute
It states I 18 bottom of crude argon column and is connected through circulation liquid argon pump 20 with II 19 top of crude argon column by the 33rd pipeline 133, institute
It states II 19 bottom of crude argon column and is connected by the 34th pipeline 134 with the upper 14 middle and lower part entrance of tower, the crude argon column I 18
Condensator outlet is respectively communicated with the 35th pipeline 135 and the 36th pipeline 136, the 35th pipeline 135 with it is described
I 18 top of crude argon column is connected, and is connected in the middle part of the 36th pipeline 136 and the pure argon column 21, the crude argon column I 18
Condenser overhead is connected by the 37th pipeline 137 with upper 14 centre entrance of tower, on 21 condenser of pure argon column
Portion connects one the 38th pipeline 138, and the 38th pipeline 138 is docked with the 37th pipeline 137, the essence argon
21 condenser overhead of tower connects one the 39th pipeline 139, and the 39th pipeline 139 goes out the cryogenic separation cold box unit
27,21 base of evaporator of pure argon column connects one the 40th pipeline 140, and the 40th pipeline 140 goes out the cryogenic separation
Cold box unit 27.
The lower tower 12 is sieve-plate tower or regular packed tower, and the upper tower 14, crude argon column I 18, II 19 and pure argon column 21 are
Regular packed tower.The main heat exchanger 11, condenser/evaporator 13, subcooler 15, I 18 condenser of crude argon column, pure argon column 21 evaporate
Device and condenser are vacuum brazing plate-fin heat exchanger.
Outlet port in the setting of air booster 4 one, the middle outlet port are respectively communicated with the 5th pipeline 105 and the 6th pipe
Road 106, the 5th pipeline 105 is successively through the low temperature machine pressurized end 5, low temperature machine pressurized end cooler 6, high temperature machine pressurized end
7, high temperature machine pressurized end cooler 8, main heat exchanger 11, cryogenic expansion machine expanding end 9 are connected with lower 12 bottom inlet of tower,
6th pipeline 106 is successively through main heat exchanger 11, high temperature expander expanding end 10, main heat exchanger 11 and lower 12 bottom of tower
Entrance is connected.
A liquid air refluxing opening, the 41st pipe of liquid air refluxing opening connection is arranged in the I 18 condenser bottom of crude argon column
Road 141, the 41st pipeline 141 are connected with upper 14 centre entrance of tower, and the I 18 condenser top of crude argon column is set
Set a liquid air overflow port, the liquid air overflow port connects one the 42nd pipeline 142, the 42nd pipeline 142 with it is described
41st pipeline 141 is connected.
Claims (4)
1. a kind of air separation unit that big amount of liquid is produced, including air filter (1), air compressor (2), air purge unit
(3), air booster (4), low temperature machine pressurized end (5) and cryogenic expansion machine expanding end (9), low temperature machine pressurized end cooler (6),
High temperature machine pressurized end (7) and high temperature expander expanding end (10), high temperature machine pressurized end cooler (8) and cryogenic separation cold box unit
(27), the cryogenic separation cold box unit (27) includes main heat exchanger (11), lower tower (12), condenser/evaporator (13), upper tower
(14), subcooler (15), liquid nitrogen pump (16), liquid oxygen pump (17), crude argon column I (18), crude argon column II (19), circulation liquid argon pump
(20), pure argon column (21), it is characterised in that: the crude argon column I (18) includes the condenser at the top of tower body and tower body, the essence argon
Tower (21) includes the evaporator of tower body, the condenser at the top of tower body and tower body bottom, and air compressor (2) entrance is through air
Filter (1) inputs raw material atmosphere, and air compressor (2) outlet passes through first pipe (101) and the air purge list
First (3) entrance is connected, and air purge unit (3) outlet is respectively communicated with second pipe (102) and third pipeline (103),
The second pipe (102) is connected through the main heat exchanger (11) with lower tower (12) bottom inlet, the third pipeline
(103) it is connected with the air booster (4) entrance, air booster (4) outlet is by the 4th pipeline (104) through institute
It states main heat exchanger (11) and the 8th throttle valve (26) to be connected with lower tower (12) the middle and lower part entrance, lower tower (12) bottom
Outlet is by the 11st pipeline (111) through the subcooler (15), pure argon column (21) evaporator and first throttle valve (22) and institute
It states crude argon column I (18) condenser inlet to be connected, lower tower (12) the middle and lower part outlet is respectively communicated with the tenth through subcooler (15)
Two pipelines (112) and the 13rd pipeline (113), the 12nd pipeline (112) is through second throttle (23) and the upper tower
(14) centre entrance is connected, and the 13rd pipeline (113) is through third throttle valve (24) and the pure argon column (21) condenser
Entrance is connected, and lower tower (12) top exit passes through the 14th pipeline (114) and the condenser/evaporator (13) entrance phase
Connection, condenser/evaporator (13) lower part outlet connect 1 the 15th pipeline (115), and the 15th pipeline (115) is respectively
It is connected to the 16th pipeline (116), the 17th pipeline (117) and the 18th pipeline (118), the 16th pipeline (116) and institute
It states lower tower (12) top entry to be connected, the 17th pipeline (117) goes out described through liquid nitrogen pump (16) and main heat exchanger (11)
Cryogenic separation cold box unit (27), the 18th pipeline (118) through subcooler (15) be respectively communicated with the 19th pipeline (119) and
20th pipeline (120), the 19th pipeline (119) are connected through the 4th throttle valve (25) with upper tower (14) upper entrance
Logical, the 20th pipeline (120) goes out the cryogenic separation cold box unit (27), condenser/evaporator (13) outlet at bottom point
Not Lian Tong the 21st pipeline (121) and the 22nd pipeline (122), the 21st pipeline (121) is through liquid oxygen pump (17)
And main heat exchanger (11) goes out the cryogenic separation cold box unit (27), the 22nd pipeline (122) goes out the cryogenic separation
Cold box unit (27), upper tower (14) top exit are connected to the 23rd pipeline (123), the 23rd pipeline (123)
Go out cryogenic separation cold box unit (27) through subcooler (15) and main heat exchanger (11) to be connected with the air purge unit (3),
Upper tower (14) bottom connects one the 24th pipeline (124), the 24th pipeline (124) and the 23rd pipe
Road (123) docking, upper tower (14) the middle and lower part outlet pass through the 31st pipeline (131) and crude argon column II (19) bottom
Entrance is connected, and is connected by the 32nd pipeline (132) with crude argon column I (18) bottom at the top of the crude argon column II (19)
Logical, crude argon column I (18) bottom is by the 33rd pipeline (133) through circulation liquid argon pump (20) and the crude argon column II (19)
Top is connected, and crude argon column II (19) bottom passes through the 34th pipeline (134) and upper tower (14) the middle and lower part entrance
It is connected, crude argon column I (18) condensator outlet is respectively communicated with the 35th pipeline (135) and the 36th pipeline (136),
35th pipeline (135) is connected with crude argon column I (18) top, the 36th pipeline (136) with it is described
It is connected in the middle part of pure argon column (21), crude argon column I (18) condenser overhead passes through the 37th pipeline (137) and the upper tower
(14) centre entrance is connected, one the 38th pipeline (138) of pure argon column (21) the condenser top connection, and the described 40th
Pipeline (138) is docked with the 39th pipeline (137), one the 39th pipe of pure argon column (21) condenser overhead connection
Road (139), the 39th pipeline (139) go out the cryogenic separation cold box unit (27), pure argon column (21) evaporator
Bottom connects one the 40th pipeline (140), and the 40th pipeline (140) goes out the cryogenic separation cold box unit (27).
2. the air separation unit that a kind of big amount of liquid according to claim 1 is produced, it is characterised in that: the lower tower (12) is
Sieve-plate tower or regular packed tower, the upper tower (14), crude argon column I (18), crude argon column II (19) and pure argon column (21) are regular fill out
Expect tower, the main heat exchanger (11), condenser/evaporator (13), subcooler (15), crude argon column I (18) condenser, pure argon column (21)
Evaporator and condenser are vacuum brazing plate-fin heat exchanger.
3. the air separation unit that a kind of big amount of liquid according to claim 1 is produced, it is characterised in that: the air booster
(4) outlet port in setting one, the middle outlet port are respectively communicated with the 5th pipeline (105) and the 6th pipeline (106), the 5th pipe
Road (105) is successively through the low temperature machine pressurized end (5), low temperature machine pressurized end cooler (6), high temperature machine pressurized end (7), high temperature machine
Pressurized end cooler (8), main heat exchanger (11), cryogenic expansion machine expanding end (9) are connected with lower tower (12) bottom inlet,
6th pipeline (106) successively through main heat exchanger (11), high temperature expander expanding end (10), main heat exchanger (11) and it is described under
Tower (12) bottom inlet is connected.
4. the air separation unit that a kind of big amount of liquid according to claim 1 is produced, it is characterised in that: the crude argon column I
(18) one liquid air refluxing opening of condenser bottom setting, the 41st pipeline (141) of the liquid air refluxing opening connection, the described 40th
One pipeline (141) is connected with upper tower (14) centre entrance, and crude argon column I (18) the condenser top is arranged a liquid air and overflows
Head piece, the liquid air overflow port connect one the 42nd pipeline (142), the 42nd pipeline (142) and the described 40th
Pipeline (141) is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821103164.7U CN208443098U (en) | 2018-07-12 | 2018-07-12 | The air separation unit that big amount of liquid is produced |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821103164.7U CN208443098U (en) | 2018-07-12 | 2018-07-12 | The air separation unit that big amount of liquid is produced |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021016756A1 (en) * | 2019-07-26 | 2021-02-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for the separation of air by cryogenic distillation |
| CN114413571A (en) * | 2022-01-24 | 2022-04-29 | 四川空分集团工程有限公司 | Low energy consumption low pressure oxygen air separation plant |
-
2018
- 2018-07-12 CN CN201821103164.7U patent/CN208443098U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021016756A1 (en) * | 2019-07-26 | 2021-02-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for the separation of air by cryogenic distillation |
| CN114413571A (en) * | 2022-01-24 | 2022-04-29 | 四川空分集团工程有限公司 | Low energy consumption low pressure oxygen air separation plant |
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