CN115228259A - Device and method for extracting carbon dioxide and distilled water in boiler flue gas - Google Patents
Device and method for extracting carbon dioxide and distilled water in boiler flue gas Download PDFInfo
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- CN115228259A CN115228259A CN202210832521.8A CN202210832521A CN115228259A CN 115228259 A CN115228259 A CN 115228259A CN 202210832521 A CN202210832521 A CN 202210832521A CN 115228259 A CN115228259 A CN 115228259A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Abstract
The invention discloses an extraction device and an extraction method for carbon dioxide and distilled water in boiler flue gas, which are characterized by comprising a flue gas filter, a sodium bicarbonate decomposition device, a carbon dioxide absorption device and a gas-liquid separator which are sequentially connected; the extraction device for the carbon dioxide and the distilled water in the boiler flue gas can ensure that the absorption liquid in the device is fully contacted with the flue gas, so that the carbon dioxide in the boiler flue gas is fully absorbed, and meanwhile, the release of the carbon dioxide in the absorption liquid is realized by only utilizing the energy carried in the flue gas without additionally providing energy, the repeated recycling of the absorption liquid is realized, and the extraction cost is saved.
Description
Technical Field
The invention relates to the technical field of carbon dioxide recovery, in particular to a device and a method for extracting carbon dioxide and distilled water in boiler flue gas.
Background
With the improvement of the world industrial level, the use of more and more fossil fuels increases the greenhouse effect of carbon dioxide in the atmosphere; sources for discharging carbon dioxide comprise waste incineration, discharge of coal-fired thermal power plants, automobile exhaust and the like; however, the amount of carbon dioxide discharged from coal-fired thermal power plants accounts for a major part, and therefore how to realize the adsorption and extraction of carbon dioxide in boiler flue gas is the key to carbon dioxide emission reduction.
At present, methods for separating and recovering carbon dioxide in boiler flue gas generally comprise a physical absorption method, a chemical absorption method, a membrane separation method and the like; the chemical absorption method has the phenomena of bubbling, entrainment and the like in the absorption tower, so that a flue gas purification system is complex and the energy consumption is high.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide an extraction device and an extraction method for carbon dioxide and distilled water in boiler flue gas, the extraction device for carbon dioxide and distilled water in boiler flue gas can ensure that absorption liquid in the device is fully contacted with the flue gas, so that the carbon dioxide in the boiler flue gas is fully absorbed, and meanwhile, the carbon dioxide in the absorption liquid is released only by using energy carried in the flue gas without additionally providing energy, so that the absorption liquid is recycled, and the extraction cost is saved.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the invention provides a device for extracting carbon dioxide and distilled water from boiler flue gas, which comprises a flue gas filter, a sodium bicarbonate decomposition device, a carbon dioxide absorption device and a gas-liquid separator which are sequentially connected;
the flue gas filter comprises a first gas inlet and a first gas outlet, the boiler flue gas enters the flue gas filter through the first gas inlet and is used for removing dust in the boiler flue gas, and the first gas outlet is connected with the sodium bicarbonate decomposition device;
the sodium bicarbonate decomposition device comprises a decomposition tank, and a first gas-liquid separation silk screen and a winding coil pipe which are sequentially arranged in the decomposition tank from top to bottom; the decomposing tank is provided with a second air outlet, a first liquid discharging port and a first liquid inlet; the inlet of the winding coil is connected with the first air outlet, and the outlet of the winding coil is connected with the carbon dioxide absorption device; the second air outlet is connected with the gas-liquid separator; the first liquid discharge port is connected with the carbon dioxide absorption device through a sodium carbonate liquid level controller;
the carbon dioxide absorption device comprises an absorption tank, and a second gas-liquid separation silk screen, a spraying device and a first circulating cooling water pipe which are sequentially arranged in the absorption tank from top to bottom; the top of the absorption tank is provided with a third air outlet, the bottom of the absorption tank is provided with a second air inlet and a second liquid outlet, the second air inlet is connected with an outlet of the winding coil, the second liquid outlet is connected with the first liquid inlet through a sodium bicarbonate liquid level controller, and the spraying device is connected with the first liquid outlet;
the gas-liquid separator comprises a gas-liquid separation tank, and a third gas-liquid separation wire mesh and a second circulating cooling water pipe which are arranged in the gas-liquid separation tank from top to bottom in sequence, wherein a fourth gas outlet is formed in the top of the gas-liquid separation tank, a third gas inlet and a third liquid discharge port are formed in the bottom of the gas-liquid separation tank, and the third gas inlet is connected with the second gas outlet.
Preferably, a one-way valve is arranged between the spraying device and the first liquid discharging port.
Preferably, a one-way valve is arranged between the second liquid outlet and the first liquid inlet.
Preferably, the first liquid inlet is located above the inlet of the winding coil.
Preferably, the absorption tank is provided with a first liquid level meter for monitoring liquid level change in the absorption tank, and the first liquid level meter is connected with the sodium bicarbonate liquid level controller for controlling the liquid level in the absorption tank.
Preferably, be provided with the second level gauge on the decomposition tank, be used for monitoring liquid level in the decomposition tank changes, the second level gauge with sodium carbonate liquid level controller is connected, is used for control the liquid level in the retort.
Preferably, a third liquid level meter is arranged on the gas-liquid separation tank and used for monitoring the liquid level change in the gas-liquid separation tank.
The second aspect of the invention provides a method for extracting carbon dioxide from boiler flue gas based on the device, which comprises the following steps:
(a) The boiler flue gas passes through a flue gas filter to remove dust in the flue gas;
(b) Enabling the filtered flue gas to pass through the winding coil pipe and then enter a carbon dioxide absorption device, and absorbing carbon dioxide in the flue gas through a sodium carbonate solution sprayed in the carbon dioxide absorption device to form a sodium bicarbonate solution;
(c) Pumping the sodium bicarbonate solution into a sodium bicarbonate decomposition device, and decomposing the sodium bicarbonate solution by absorbing heat in the winding coil to obtain mixed gas of water vapor and carbon dioxide;
(d) And removing the water vapor from the mixed gas of the water vapor and the carbon dioxide by a gas-liquid separator to obtain pure carbon dioxide.
Preferably, the concentration of the sodium carbonate solution is 70-90 g/L.
Compared with the prior art, the invention has the beneficial effects that at least:
the extraction device for the carbon dioxide and the distilled water in the boiler flue gas can ensure that the absorption liquid in the device is fully contacted with the flue gas, so that the carbon dioxide in the boiler flue gas is fully absorbed, and meanwhile, the release of the carbon dioxide in the absorption liquid is realized by only utilizing the energy carried in the flue gas without additionally providing energy, the repeated recycling of the absorption liquid is realized, and the extraction cost is saved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an extraction device for carbon dioxide and distilled water in boiler flue gas according to the present invention.
In the drawings, there is shown in the drawings,
1-a smoke filter, 11-a first air inlet, 12-a first air outlet; 2-sodium bicarbonate decomposition device, 21-decomposition tank, 22-first gas-liquid separation silk screen, 23-winding coil pipe, 24-second gas outlet, 25-first liquid discharge port, 26-first liquid inlet, 27-sodium carbonate liquid level controller, 28-one-way valve and 29-second liquid level meter; 3-a carbon dioxide absorption device, 31-an absorption tank, 32-a second gas-liquid separation wire mesh, 33-a spraying device, 34-a first circulating cooling water pipe, 35-a third gas outlet, 36-a second gas inlet, 37-a second liquid outlet, 38-a sodium bicarbonate liquid level controller and 39-a first liquid level meter; 4-a gas-liquid separator, 41-a gas-liquid separation tank, 42-a third gas-liquid separation wire mesh, 43-a second circulating cooling water pipe, 44-a fourth air outlet, 45-a third air inlet, 46-a third liquid outlet and 47-a third liquid level meter.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the following embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, an embodiment of the present invention provides an extraction apparatus for carbon dioxide and distilled water in boiler flue gas, where the extraction apparatus for carbon dioxide and distilled water in boiler flue gas includes a flue gas filter 1, a sodium bicarbonate decomposition device 2, a carbon dioxide absorption device 3, and a gas-liquid separator 4, which are connected in sequence;
the flue gas filter comprises a first gas inlet 11 and a first gas outlet 12, the boiler flue gas enters the flue gas filter 1 through the first gas inlet 11 and flows out of the first gas outlet 12 to be used for removing dust in the boiler flue gas, and the first gas outlet 12 is connected with the sodium bicarbonate decomposition device 2 and is used for introducing the boiler flue gas with the dust removed into the sodium bicarbonate decomposition device 2;
the sodium bicarbonate decomposition device 2 comprises a decomposition tank 21, and a first gas-liquid separation silk screen 22 and a winding coil pipe 23 which are sequentially arranged in the decomposition tank 21 from top to bottom; the decomposing tank 21 is provided with a second air outlet 24, a first liquid outlet 25 and a first liquid inlet 26; the inlet of the winding coil 23 is connected with the first air outlet 12, the outlet of the winding coil 23 is connected with the carbon dioxide absorption device 3, when boiler flue gas flows through the winding coil 23, the energy carried in the boiler flue gas is utilized to heat the winding coil 23, and sodium bicarbonate solution in contact with the winding coil 23 is indirectly heated, so that the sodium bicarbonate solution is decomposed; the second air outlet 24 is connected with the gas-liquid separator 4; the first discharge port 25 is connected to the carbon dioxide absorbing device 3 through a sodium carbonate level controller 27, and the sodium carbonate level controller 27 is used for conveying the solution in the decomposition tank 21 to the carbon dioxide absorbing device 3;
the carbon dioxide absorption device 3 comprises an absorption tank 31, and a second gas-liquid separation silk screen 32, a spraying device 33 and a first circulating cooling water pipe 34 which are sequentially arranged in the absorption tank 31 from top to bottom; a third air outlet 35 is arranged at the top of the absorption tank 31, a second air inlet 36 and a second liquid outlet 37 are arranged at the bottom of the absorption tank 31, the second air inlet 36 is connected with an outlet of the winding coil 23, the second liquid outlet 37 is connected with the first liquid inlet 26 through a sodium bicarbonate liquid level controller 38, and the sodium bicarbonate liquid level controller 38 is used for conveying the solution in the absorption tank 31 to the reaction tank 21; the spraying device 33 is connected with the first liquid discharging port 25;
the gas-liquid separator 4 includes a gas-liquid separation tank 41, and a third gas-liquid separation wire mesh 42 and a second circulating cooling water pipe 43 which are sequentially arranged inside the gas-liquid separation tank 41 from top to bottom, the top of the gas-liquid separation tank 41 is provided with a fourth gas outlet 44, the bottom of the gas-liquid separation tank is provided with a third gas inlet 45 and a third liquid outlet 46, and the third gas inlet 45 is connected with the second gas outlet 24.
The extraction device can ensure that the absorption liquid in the device is fully contacted with the flue gas, so that the carbon dioxide in the boiler flue gas is fully absorbed, and meanwhile, the carbon dioxide in the absorption liquid is released only by using the energy carried in the flue gas without additionally providing energy, so that the absorption liquid is recycled, and the extraction cost is saved.
In some embodiments, a one-way valve 28 is provided between the spray device 33 and the first drain 25; by the provision of the one-way valve 28, backflow of the delivery solution can be avoided.
In some embodiments, a one-way valve 28 is provided between the second drain port 37 and the first inlet port 26 for preventing backflow of the delivery solution.
In order to better promote the decomposition of sodium bicarbonate, in some embodiments, the first liquid inlet 26 is located above the inlet of the winding coil 23, and this arrangement can realize the movement of the sodium bicarbonate solution from top to bottom, so as to better absorb the energy in the winding coil 23 and promote the decomposition of sodium bicarbonate to release carbon dioxide.
For better operation and safety of the apparatus, in some embodiments, the absorption tank 31 is provided with a first liquid level meter 39 for monitoring the liquid level change in the absorption tank 31, and the first liquid level meter 39 is connected with the sodium bicarbonate liquid level controller 38, and when the liquid level in the absorption tank 31 reaches a certain height, the liquid level in the absorption tank 31 is controlled by the sodium bicarbonate liquid level controller 38.
In some embodiments, a second level meter 29 is disposed on the decomposition tank 21 for monitoring the liquid level change in the decomposition tank 21, and the second level meter 29 is connected with the sodium carbonate level controller 27 for controlling the liquid level in the reaction tank 21.
In some embodiments, a third level gauge 47 is provided on the knock out pot 41 for monitoring changes in the liquid level within the knock out pot 41.
The embodiment of the invention also provides a method for extracting carbon dioxide from boiler flue gas based on the device, which comprises the following steps:
(a) The boiler flue gas passes through a flue gas filter 1 to remove dust in the flue gas;
(b) Enabling the filtered flue gas to pass through a winding coil 23 and then enter a carbon dioxide absorption device 3, and absorbing carbon dioxide in the flue gas through a sodium carbonate solution sprayed in the carbon dioxide absorption device 3 to form a sodium bicarbonate solution;
(c) Pumping the sodium bicarbonate solution into a sodium bicarbonate decomposition device 2, and decomposing the sodium bicarbonate solution by absorbing the heat in the winding coil 23 to obtain a mixed gas of water vapor and carbon dioxide;
(d) The mixed gas of the water vapor and the carbon dioxide is passed through a gas-liquid separator 4 to remove the water vapor, and pure carbon dioxide is obtained.
In some embodiments, the concentration of the sodium carbonate solution is any value between 70 and 90g/L, and specifically may be 70g/L, 80g/L or 90g/L.
The working principle of the device for extracting the carbon dioxide and the distilled water from the boiler flue gas is as follows:
1. the dust in the tail gas is removed from the boiler flue gas by a flue gas filter 1, and the filtered mixed gas mainly contains CO 2 Water vapor, nitrogen, oxygen, nitrogen oxides and the like, and carry high heat; the device mainly functions to selectively absorb CO in the boiler flue gas 2 The decomposition reaction with sodium bicarbonate generates pure CO 2 Collecting and utilizing heat carried by the mixed gas to supply heat of the winding coil 23 in the sodium bicarbonate decomposition device 2;
2. CO in the mixed gas 2 The temperature of the mixed gas is reduced after passing through a first circulating cooling water pipe 34 in the carbon dioxide absorption device 3, and CO in the mixed gas is absorbed by using a sodium carbonate solution 2 Sodium bicarbonate is produced. The sodium carbonate solution is sprayed by a spraying device 33 and mixed with CO in the gas 2 The sodium bicarbonate solution is generated by full contact reaction;
3. as the reaction in the carbon dioxide absorption device 3 continues, the generated sodium bicarbonate is pumped to the sodium bicarbonate decomposition device 2 by the sodium bicarbonate liquid level controller 38 for the decomposition reaction of the sodium bicarbonate, and CO released by the decomposition reaction 2 And the carried water vapor passes through a gas-liquid separator 4 to produce drynessPure CO 2 And distilled water;
4. the sodium bicarbonate is decomposed to generate water and CO 2 And sodium carbonate, CO 2 The discharge is utilized, and the sodium carbonate solution is pumped to the carbon dioxide absorption device 3 by the sodium carbonate liquid level controller 27 to absorb the CO in the mixed gas again 2 The above steps are repeatedly circulated to achieve the purpose that the sodium carbonate solution absorbs CO 2 And sodium bicarbonate decomposes to release CO 2 And distilled water;
5. the working principle of the device is as follows: method for absorbing CO in boiler tail gas by using sodium carbonate 2 Sodium bicarbonate is generated, and the sodium bicarbonate is heated and decomposed in another system to generate CO 2 Water and sodium carbonate, CO formed by decomposition 2 Collecting and utilizing, pumping the generated sodium carbonate solution to a carbon dioxide absorption system 3 for recycling and absorbing CO in the boiler tail gas 2 . The CO in the boiler tail gas is selectively absorbed by the repeated circulation 2 CO released by decomposition reaction with sodium bicarbonate 2 And (4) collecting and utilizing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. The device for extracting the carbon dioxide and the distilled water in the boiler flue gas is characterized by comprising a flue gas filter, a sodium bicarbonate decomposition device, a carbon dioxide absorption device and a gas-liquid separator which are sequentially connected;
the flue gas filter comprises a first gas inlet and a first gas outlet, the boiler flue gas enters the flue gas filter through the first gas inlet and is used for removing dust in the boiler flue gas, and the first gas outlet is connected with the sodium bicarbonate decomposition device;
the sodium bicarbonate decomposition device comprises a decomposition tank, and a first gas-liquid separation silk screen and a winding coil pipe which are sequentially arranged in the decomposition tank from top to bottom; the decomposing tank is provided with a second air outlet, a first liquid discharging port and a first liquid inlet; the inlet of the winding coil is connected with the first air outlet, and the outlet of the winding coil is connected with the carbon dioxide absorption device; the second air outlet is connected with the gas-liquid separator; the first liquid discharging port is connected with the carbon dioxide absorption device through a sodium carbonate liquid level controller;
the carbon dioxide absorption device comprises an absorption tank, and a second gas-liquid separation silk screen, a spraying device and a first circulating cooling water pipe which are sequentially arranged in the absorption tank from top to bottom; the top of the absorption tank is provided with a third air outlet, the bottom of the absorption tank is provided with a second air inlet and a second liquid outlet, the second air inlet is connected with an outlet of the winding coil, the second liquid outlet is connected with the first liquid inlet through a sodium bicarbonate liquid level controller, and the spraying device is connected with the first liquid outlet;
the gas-liquid separator comprises a gas-liquid separation tank, and a third gas-liquid separation wire mesh and a second circulating cooling water pipe which are arranged in the gas-liquid separation tank from top to bottom in sequence, wherein a fourth gas outlet is formed in the top of the gas-liquid separation tank, a third gas inlet and a third liquid discharge port are formed in the bottom of the gas-liquid separation tank, and the third gas inlet is connected with the second gas outlet.
2. The device for extracting carbon dioxide and distilled water from boiler flue gas according to claim 1, wherein a check valve is arranged between the spraying device and the first liquid discharge port.
3. The device for extracting carbon dioxide and distilled water from boiler flue gas as claimed in claim 1, wherein a one-way valve is arranged between the second liquid outlet and the first liquid inlet.
4. The apparatus as claimed in claim 1, wherein the first liquid inlet is located above the inlet of the winding coil.
5. The device for extracting carbon dioxide and distilled water from boiler flue gas as claimed in claim 1, wherein a first liquid level meter is arranged on the absorption tank for monitoring liquid level change in the absorption tank, and the first liquid level meter is connected with the sodium bicarbonate liquid level controller for controlling liquid level in the absorption tank.
6. The device for extracting carbon dioxide and distilled water from boiler flue gas as claimed in claim 1, wherein a second liquid level meter is disposed on the decomposition tank for monitoring liquid level change in the decomposition tank, and the second liquid level meter is connected to the sodium carbonate liquid level controller for controlling liquid level in the reaction tank.
7. The apparatus as claimed in claim 1, wherein a third liquid level meter is disposed on the gas-liquid separation tank for monitoring the liquid level change in the gas-liquid separation tank.
8. A method for extracting carbon dioxide from boiler flue gas based on the device of any one of claims 1 to 7, which is characterized by comprising the following steps:
(a) The boiler flue gas passes through a flue gas filter to remove dust in the flue gas;
(b) Enabling the filtered flue gas to pass through the winding coil pipe and then enter a carbon dioxide absorption device, and absorbing carbon dioxide in the flue gas through a sodium carbonate solution sprayed in the carbon dioxide absorption device to form a sodium bicarbonate solution;
(c) Pumping the sodium bicarbonate solution into a sodium bicarbonate decomposition device, and decomposing the sodium bicarbonate solution by absorbing heat in the winding coil to obtain mixed gas of water vapor and carbon dioxide;
(d) And removing the water vapor from the mixed gas of the water vapor and the carbon dioxide by a gas-liquid separator to obtain pure carbon dioxide.
9. The extraction method according to claim 8, wherein the concentration of the sodium carbonate solution is 70 to 90g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210832521.8A CN115228259A (en) | 2022-07-15 | 2022-07-15 | Device and method for extracting carbon dioxide and distilled water in boiler flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210832521.8A CN115228259A (en) | 2022-07-15 | 2022-07-15 | Device and method for extracting carbon dioxide and distilled water in boiler flue gas |
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| CN115228259A true CN115228259A (en) | 2022-10-25 |
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| CN202210832521.8A Pending CN115228259A (en) | 2022-07-15 | 2022-07-15 | Device and method for extracting carbon dioxide and distilled water in boiler flue gas |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962186A (en) * | 2009-07-23 | 2011-02-02 | 苏庆泉 | Heat-supply and carbon-dioxide capturing system and method |
| CN102000486A (en) * | 2010-10-18 | 2011-04-06 | 武汉凯迪电力股份有限公司 | Method for catching carbon dioxide in flue gas by active sodium carbonate and apparatus thereof |
| WO2015052325A1 (en) * | 2013-10-11 | 2015-04-16 | Nilu - Stiftelsen Norsk Institutt For Luftforskning | Capture of carbon dioxide |
| CN205913972U (en) * | 2016-06-23 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | System for carbon dioxide in absorption coal fired power plant flue gas |
| CN112957902A (en) * | 2021-02-05 | 2021-06-15 | 中国华能集团清洁能源技术研究院有限公司 | System and method for absorbing carbon dioxide in thermal power plant flue gas caustic soda solution |
-
2022
- 2022-07-15 CN CN202210832521.8A patent/CN115228259A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962186A (en) * | 2009-07-23 | 2011-02-02 | 苏庆泉 | Heat-supply and carbon-dioxide capturing system and method |
| CN102000486A (en) * | 2010-10-18 | 2011-04-06 | 武汉凯迪电力股份有限公司 | Method for catching carbon dioxide in flue gas by active sodium carbonate and apparatus thereof |
| WO2015052325A1 (en) * | 2013-10-11 | 2015-04-16 | Nilu - Stiftelsen Norsk Institutt For Luftforskning | Capture of carbon dioxide |
| CN205913972U (en) * | 2016-06-23 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | System for carbon dioxide in absorption coal fired power plant flue gas |
| CN112957902A (en) * | 2021-02-05 | 2021-06-15 | 中国华能集团清洁能源技术研究院有限公司 | System and method for absorbing carbon dioxide in thermal power plant flue gas caustic soda solution |
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