CN206198739U - A kind of low-temperature carbon dioxide separator - Google Patents
A kind of low-temperature carbon dioxide separator Download PDFInfo
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- CN206198739U CN206198739U CN201621094942.1U CN201621094942U CN206198739U CN 206198739 U CN206198739 U CN 206198739U CN 201621094942 U CN201621094942 U CN 201621094942U CN 206198739 U CN206198739 U CN 206198739U
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Abstract
The utility model discloses a kind of low temperature CO2Separator, it is cylindrical shape to precool tower, main cooling tower and storage tower, is vertically arranged successively by upper, middle and lower；Precool in tower and be provided with interior tower A, interior tower B is provided with main cooling tower.Unstripped gas is entered the condenser pipe of interior tower A by air inlet, and the temperature of interior tower A is 60 DEG C, realizes the liquefaction of water vapour；Because the temperature in interior tower A is higher than CO2Freezing point, CO2With other gases just into the interior tower B of main cooling tower, the temperature of interior tower B is 120 DEG C, less than CO2Freezing point, CO therein2Solid is frozen into, heat exchanger surface is frozen in, then makes solid-state CO by rotating scraping board2Fall into storage tower, it is achieved thereby that H2O and CO2In the separation of different parts.The utility model can under cryogenic realize CO2Separation, the rate of recovery is 96%, energy consumption be 1.5MJ/Kg CO2。
Description
Technical field
The utility model is related to a kind of new low temperature gas separater, more particularly to a kind of low temperature CO2Gas is separated
Device.
Background technology
Low temperature process carbon trapping technique, belongs to after burning CO in flue gas2One kind of trapping technique, it is based in mixed gas
The molten boiling point difference of different component realizes separate method.Low temperature CO2Isolation technics has potential as a kind of lower energy cost very much
Flue gas in CO2Isolation technics, because Cryogenic Separating Process does not need chemical reagent, and does not need pressure drop.Recently, low temperature CO2
Isolation technics causes people widely to pay close attention to, but still has some problems needs to be solved.(1) CO of heat exchanger surface solidification2
Heat transfer will be had a strong impact on, and arresting efficiency can be reduced.(2) important parameter of refrigeration machine is COP (coefficient of performance), one
The coefficient of performance of a little refrigeration machines is too low.Sterlin refrigerator causes the research interest of people due to its some good characteristics.It
Working media can be air, hydrogen or helium.Compared with traditional refrigeration machine (CFCs, HCFCs, HFCs), its ozone
Destruction gesture is 0.In ideal conditions, Stirling cycle is reversible.Other sterlin refrigerator can be in temperature very wide
In the range of (- 120 DEG C -70 DEG C) work, and under low heat load, its coefficient of performance can exceed that 2.5.
State when being captured according to carbon dioxide is different, and low temperature process carbon trapping technique contains two kinds of trapping forms：The
One kind is that liquefaction is separated, i.e. cryogenic condensation or rectifying, using the boiling point difference with other compositions in mixed gas, using low temperature skill
Art is by CO2Liquefy and separate；Second is separation of sublimating, it mainly use in de-sublimation temperature and mixed gas other into
Point difference, using cryogenic technique by CO2Solidify and separate.CO2It is separated in solid form by way of sublimating
Come, be with power savings advantages in the range of finite concentration.
Retrieve research both domestic and external, cryogenic separation Technical comparing it is ripe for CO in natural gas2Removal, such as Cool
The CryoCell technologies of Energy companies exploitation, using a low-temperature process CO2Removing is fallen from natural gas.
Retrieve research both domestic and external, CO in cryogenic trapping flue gas2Device it is fewer.Clodic and Younes etc. it is proposed that
Low temperature CO under one normal pressure2Separator.Solidified in heat exchanger cold side by evaporated refrigerant working medium, so as to reach trapping
Purpose.Within the system, two evaporimeter frosting defrosting process alternate runs, a frosting, another then defrosts.But he
The shortcoming of system be：Water content is as small as possible in raw material, and the ice for preventing water from being formed blocks pipeline or produces in operation
A raw big pressure drop；In the CO that heat exchanger surface is formed2Solid layer, can have a strong impact on the heat transfer of heat exchanger, reduce effect
Rate；Expensive heat exchanger must at different temperature be transformed into regeneration cycle, and operation will be paid special attention to, it is to avoid excessive machinery
Pressure.Dutch scientist M.J.Tuinier etc. develops the CO based on low temperature packed bed2Trapping technique, based on different dew points
And sublimation point, realize CO2, H2The separation of O and other infiltration gases.Compared to the cryogenic trapping of the propositions such as Clodic and Younes
System, without increase pressure drop and generation blockage problem, but the operation of this packed bed is more complicated, first to lead to nitrogen refrigeration, then
Unstrpped gas is passed through again.CO2Recycle heat is equally more complicated during trapping, and requirement to filler particles is higher.
The utility model is the new type low temperature CO based on free-piston type sterlin refrigerator2Isolation technics, according to sublimating
The difference of point is separated, H2O and CO2Can be condensed and sublimate in the different piece of trapping system, remaining gas outflow system
There is no the change of phase.Water is flowed out, it is to avoid blockage problem in the concentration of the process of precooling by concentration tube.CO2It is to be caught with solid phase
Collection, it is to avoid using solvent and consider stress problems in other capture methods.It is remaining for condensed gas is gone out by gas
Mouth discharge.
The content of the invention
The purpose of this utility model, is to overcome existing CO2Trapping technique energy resource consumption is high, and product recovery rate is low to be lacked
Point and deficiency, there is provided a kind of new low temperature CO2Separator, CO is carried out according to the difference sublimated a little2Separate.This device CO2Catch
Collection energy consumption is low, can under cryogenic realize CO2Separation, last CO2It is saved with solid-state, the rate of recovery is high.
The utility model is achieved through the following technical solutions：
A kind of low temperature CO2Separator, including precool tower, main cooling tower and the part of storage tower three, it is characterised in that institute
It is cylindrical shape to state precooling tower 1, main cooling tower 2 and storage tower 3, is vertically arranged successively by upper, middle and lower；
Precool and interior tower A6 is provided with tower 1, it is vacuum state to precool between tower 1 and Nei Ta A6；Set in main cooling tower 2
Interior tower B11 is equipped with, is also vacuum state between main cooling tower 2 and Nei Ta B11；Precool tower 1 and main cooling tower 2 and interior tower A6 and
Do not connected between interior tower B11；
Interior tower A6, interior tower B11 and storage tower 3 are respectively arranged with refrigeration machine A4, refrigeration machine B9 and refrigeration machine C16, refrigeration machine
The heat exchanger 10 of B9 is arranged on the middle position of interior tower B11；The periphery of heat exchanger 10 is provided with rotation and scrapes sassafras plate 14；Main cooling tower
2 are additionally provided with motor 13 to control rotation to scrape sassafras plate 14；
Condenser pipe 7 is provided with interior tower A6, the top for precooling tower 1 is provided with the air inlet 5 of condenser pipe 7, precools tower 1
Side wall be provided with the condensation-water drain 8 of condenser pipe 7, the lower end of condenser pipe 7 is extended in interior tower B11；Interior tower B11 with below
Storage tower 3 connect；The side wall of storage tower 3 is provided with gas discharge outlet 15；
Gas preprocessor 17, valve 18, the and of flow controller 19 are additionally provided with the front end of the air inlet 5 of condenser pipe 7
Pressure controller 20.
It is -60 DEG C that temperature is set in the interior tower A6 for precooling tower 1, and temperature is set in the interior tower B11 of main cooling tower 2
It it is -120 DEG C, it is -80 DEG C that temperature is set in storage tower 3.
The refrigeration machine A4, refrigeration machine B9 and refrigeration machine C16 are free-piston type sterlin refrigerator.
The precooling tower 12, main cooling tower 13 and storage tower 14 are stainless steel material.
The interior tower A6, the outer surface of interior tower B11 are provided with aluminum foil material.
The outer surface for precooling tower 1, main cooling tower 2 and storage tower 3 is provided with pearl cotton heat-insulating material.
The beneficial effects of the utility model are as follows：
1. the utility model devises the low temperature CO based on free-piston type sterlin refrigerator2Separator.Low temperature
CO2Isolation technics separate CO compared to more ripe chemical absorption method2, it is not necessary to chemical reagent, it is therefore prevented that the pollution of reagent,
The regeneration of solvent, therefore energy saving are not needed in addition.
2. low temperature CO2Isolation technics, with membrane separation process trap CO2Compare, it is not necessary to pressure differential, and the product of pressure differential
Life needs compressor or vavuum pump, consumes the energy, from for this respect, low temperature CO2Isolation technics be also energy saving.
3. using own piston Stirling cooler, it has compact conformation, lightweight, oil-free, fortune to the utility model
Dynamic component is few, the advantages of the high and low noise of reliability, low vibration, not easy to wear, long lifespan, refrigerating capacity facilitate adjustable.
4. the utility model is in low temperature CO2During separation, the water vapour in unstripped gas is concentrated in precooling process, by dense
The draw flows out, it is to avoid blockage problem.Water and CO2Can be condensed and sublimate in the different piece of trapping system, remaining gas
Outflow system does not have the change of phase.CO2It is to be captured with solid phase, it is to avoid solvent and consideration are used in other capture methods
Stress problems.96% CO is realized at optimal temperature and flow rate2The rate of recovery, energy resource consumption is only 1.5MJ/Kg
CO2.
Brief description of the drawings
Fig. 1 is the utility model low temperature CO2The structural representation of separator；
Fig. 2 is the utility model low temperature CO2The process diagram of separation process.
The utility model accompanying drawing table and as follows：
1 --- precooling tower 2 --- main cooling tower
3 --- storage tower 4 --- refrigeration machine A
5 --- air inlet 6 --- interior tower A
7 --- condenser pipe 8 --- condensation-water drains
9 --- refrigeration machine B 10 --- heat exchangers
11 --- interior tower B 12 --- solid-state CO2
13 --- motor 14 --- rotate scraping board
15 --- gas discharge outlet 16 --- refrigeration machine C
17 --- gas preprocessor 18 --- valves
19 --- flow controller 20 --- pressure controllers
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
Fig. 1 is the utility model low temperature CO2The structural representation of separator, Fig. 2 is the utility model low temperature CO2Separate
The process diagram of process.
Referring to accompanying drawing, a kind of low temperature CO of the present utility model2Separator, including：Precool tower 1, main cooling tower 2, storage
The part of tower 3 three is deposited, is vertically arranged successively by upper, middle and lower, be stainless steel material, its outer surface is provided with pearl cotton heat-insulating material.In advance
Interior tower A6 is provided with cooling tower 1, it is vacuum state to precool between tower 1 and Nei Ta A6；Interior tower is provided with main cooling tower 2
B11, is also vacuum state between main cooling tower 2 and Nei Ta B11；Precool tower 1 and main cooling tower 2 and interior tower A6 and Nei Ta B11
Between do not connect；Interior tower A6, the outer surface of interior tower B11 are provided with aluminum foil material.
Interior tower A6, interior tower B11 and storage tower 3 are respectively arranged with refrigeration machine A4, refrigeration machine B9 and refrigeration machine C16, refrigeration machine
The heat exchanger 10 of B9 is arranged on the middle position of interior tower B11；The periphery of heat exchanger 10 is provided with rotation and scrapes sassafras plate 14, main cooling tower
2 are additionally provided with motor 13 to control rotation to scrape sassafras plate 14；
Condenser pipe 7 is provided with interior tower A6, the top for precooling tower 1 is provided with the air inlet 5 of condenser pipe 7, precools tower 1
Side wall be provided with the condensation-water drain 8 of condenser pipe 7, the lower end of condenser pipe 7 is extended in interior tower B11；Interior tower B11 with below
Storage tower 3 connect；The side wall of storage tower 3 is provided with gas discharge outlet 15；
Gas preprocessor 17, valve 18, the and of flow controller 19 are additionally provided with the front end of the air inlet 5 of condenser pipe 7
Pressure controller 20.
Unstripped gas passes through gas preprocessor 17, valve 18, flow controller 19 and pressure controller 20, from air inlet 5
Into the condenser pipe 7 of the interior tower A6 for precooling tower 1, the temperature of interior tower A6 is -60 DEG C, it is possible to achieve the liquefaction of water vapour, is formed
The water of liquid, aqueous water in condenser pipe outlet 8 by discharging.Because the temperature in interior tower A6 is higher than CO2Freezing point, CO2And other
Gas (such as N2、O2) enter main cooling tower 2 in a gaseous form.Main cooling tower 2 by the sterlin refrigerator B9 that is connected with it,
Temperature in controlling in tower B11 is -120 DEG C, less than CO2Freezing point, the CO in interior tower B112Solid is frozen into, is frozen in
The surface of heat exchanger 10, it is achieved thereby that H2O and CO2In the separation of different parts.It is frozen in the solid-state CO of heat exchanger surface212,
The rotation scraping board 14 driven by motor 13 is scraped, and it is fallen into storage tower 3.Storage tower 3 is connected by with it
Sterlin refrigerator C16, it is -80 DEG C, the CO of high-purity to control in storage tower 3 temperature2It is stored in the form of solid-state.It is not cold
Solidifying N2Discharged by gas discharge outlet 15 with other gases.
Embodiment 1
With CO2/N2/H2Composition after the mixed gas simulated combustion of O in flue gas, wherein CO2It is 13vol%, N2For
82vol%, H2O is 5vol%.Using low temperature CO of the present utility model2Gas fractionation unit, CO is carried out with low temperature process2Separation,
Specific implementation process is as follows：
Mixed gas first pass through the SO during gas preprocessor 17 removes flue gasx、NOxAnd flying dust, then by flow controller
19 control flow rates, then gaseous mixture admission pressure is controlled by pressure controller 20.Mixed gas enter condensation from air inlet 5
Pipe 7, the interior tower A6 for precooling tower 1 is connected with sterlin refrigerator A4, and it is -60 DEG C to control the temperature in interior tower A6.At a temperature of this
Water vapour is liquefied, and forms aqueous water (preventing the blocking to form ice to pipeline), and the water of liquid is discharged from condenser pipe outlet 8.
Because now temperature is higher than CO2Freezing point (about -78.5 DEG C) and N2Freezing point (about -209.86 DEG C), make CO2And N2With gaseous state
Smoothly into the interior tower B11 of main cooling tower 2.
The interior tower B11 of main cooling tower 1 is connected with sterlin refrigerator B9, and the setting temperature of interior tower B9 is -120 DEG C, by
CO is less than in temperature now2Freezing point, make CO2Solid is frozen into, the surface of heat exchanger 10 is frozen in, and this temperature is still
Higher than N2Freezing point, so N2Storage tower 3 is still entered with gaseous state.It is frozen in the CO on the surface of heat exchanger 10212, by motor
The 13 rotation scraping boards 14 for driving are scraped, and make solid-state CO212 fall into storage tower 3.
Storage tower 3 is connected with sterlin refrigerator C16, and the setting temperature of storage tower 3 is -80 DEG C, the CO of high-purity2With
The form of solid-state is stored, uncooled N2Discharged by gas discharge outlet 15 in a gaseous form.
Mixed gas pass through low temperature CO of the present utility model2Gas fractionation unit, realizes low temperature CO2Separation.Finally,
Water vapour is discharged from the interior tower A6 for precooling tower in liquid form, CO2It is stored in storage tower in solid form, it is uncooled
Gas (N2), the gas discharge outlet discharge from storage tower.
Claims (3)
1. a kind of low temperature CO2Separator, including precool tower, main cooling tower and the part of storage tower three, it is characterised in that it is described
It is cylindrical shape to precool tower (1), main cooling tower (2) and storage tower (3), is vertically arranged successively by upper, middle and lower；
Precool and interior tower A (6) is provided with tower (1), it is vacuum state to precool between tower (1) and interior tower A (6)；Main cooling tower
(2) interior tower B (11) is provided with, is also vacuum state between main cooling tower (2) and interior tower B (11)；Precool tower (1) and master is cold
But do not connected between tower (2) and interior tower A (6) and interior tower B (11)；
Interior tower A (6), interior tower B (11) and storage tower (3) are respectively arranged with refrigeration machine A (4), refrigeration machine B (9) and refrigeration machine C
(16), the heat exchanger (10) of refrigeration machine B (9) is arranged on the middle position of interior tower B (11)；The periphery of heat exchanger (10) is provided with rotation
Turn to scrape sassafras plate (14)；Main cooling tower (2) is additionally provided with motor (13) to control rotation to scrape sassafras plate (14)；
Condenser pipe (7) is provided with interior tower A (6), the air inlet (5) that condenser pipe (7) are provided with the top of tower (1) is precooled, in advance
The side wall of cooling tower (1) is provided with the condensation-water drain (8) of condenser pipe (7), and the lower end of condenser pipe (7) extends to interior tower B (11)
In；Interior tower B (11) connects with storage tower (3) below；The side wall of storage tower (3) is provided with gas discharge outlet (15)；
Gas preprocessor (17), valve (18), flow controller are additionally provided with the front end of the air inlet (5) of condenser pipe (7)
And pressure controller (20) (19).
2. a kind of low temperature CO according to claim 12Separator, it is characterised in that the interior tower A of the precooling tower (1)
(6) it is -60 DEG C that temperature is set in, and it is to be set in -120 DEG C, storage tower (3) that temperature is set in the interior tower B (11) of main cooling tower (2)
Temperature is -80 DEG C.
3. a kind of low temperature CO according to claim 12Separator, it is characterised in that the refrigeration machine A (4), refrigeration machine B
And refrigeration machine C (16) is free-piston type sterlin refrigerator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621094942.1U CN206198739U (en) | 2016-09-29 | 2016-09-29 | A kind of low-temperature carbon dioxide separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621094942.1U CN206198739U (en) | 2016-09-29 | 2016-09-29 | A kind of low-temperature carbon dioxide separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206198739U true CN206198739U (en) | 2017-05-31 |
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ID=58761332
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621094942.1U Withdrawn - After Issue CN206198739U (en) | 2016-09-29 | 2016-09-29 | A kind of low-temperature carbon dioxide separator |
Country Status (1)
| Country | Link |
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| CN (1) | CN206198739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237648A (en) * | 2016-09-29 | 2016-12-21 | 天津大学 | Low-temperature carbon dioxide segregation apparatus |
-
2016
- 2016-09-29 CN CN201621094942.1U patent/CN206198739U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237648A (en) * | 2016-09-29 | 2016-12-21 | 天津大学 | Low-temperature carbon dioxide segregation apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170531 Effective date of abandoning: 20180511 |
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| AV01 | Patent right actively abandoned |