CN113880344B - CCS byproduct calcium-containing brine recycling treatment system and treatment method thereof - Google Patents
CCS byproduct calcium-containing brine recycling treatment system and treatment method thereof Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
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- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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Abstract
The application belongs to the technical field of carbon fixation, and particularly discloses a recycling treatment system and a recycling treatment method for calcium-containing brine as a byproduct of CCS. The system comprises a membrane concentration system, a carbon dioxide decalcification system, a falling film evaporation system and a strong brine alkali preparation system; the membrane concentration system comprises a nanofiltration membrane device and a reverse osmosis membrane device which are connected; the carbon dioxide decalcification system comprises a carbon dioxide gas conveying device, a solidification reaction device and a calcium carbonate product collecting tank; the falling film evaporation system comprises a falling film heater and a falling film separator which are connected, and the concentrated brine alkali preparation system comprises a caustic soda preparation device and a caustic soda conveying device which are connected; the application can convert calcium ions in the byproduct calcium-containing brine into calcium carbonate products, and no solid waste of mixed salt is generated; the existing carbon dioxide gas to be solidified and the existing sodium chloride brine of the CCS technology are utilized to prepare the alkali, a large amount of sodium carbonate and caustic soda are not required to be purchased additionally, the recycling of the calcium-containing brine is realized, the carbon is further fixed, and the self circulation of system materials is realized.
Description
Technical Field
The application belongs to the technical field of carbon fixation, and particularly discloses a recycling treatment system and a recycling treatment method for calcium-containing brine as a byproduct of CCS.
Background
CCSCO 2 In the application process of the trapping and sealing project, a large amount of solid waste of mixed salt is inevitably generated by a simple zero-emission evaporation treatment method for the byproduct of calcium-containing brine. If the traditional two-alkali process is adopted to remove calcium, a large amount of sodium carbonate and caustic soda are consumed, the operation cost is high, and a large amount of solid is also producedWaste.
The calcium carbonate product is prepared by using byproduct calcium-containing brine, and the process is a reaction crystallization process. For reactive crystallization, effective dispersion supersaturation is the fundamental driving force for promoting crystal nucleation, crystal growth and the preparation of large particle crystals. The traditional triple box calcium removal system adopts a solid-liquid mixing reaction mode, has high supersaturation degree and is extremely easy to explode crystals for nucleation, and meanwhile, the equipment is in a simple open slot form, so that the method is difficult to be applied to a gas-liquid reaction process utilizing high-concentration carbon dioxide gas to be solidified.
Disclosure of Invention
Aiming at the technical problems in the prior art, one of the purposes of the application is to provide a recycling treatment system and a treatment method for calcium-containing brine as a byproduct of CCS.
A CCS byproduct calcium-containing brine recycling treatment system comprises a membrane concentration system, a carbon dioxide decalcification system, a falling film evaporation system and a concentrated brine alkali-making system which are connected in sequence;
the membrane concentration system comprises a nanofiltration membrane device and a reverse osmosis membrane device which are connected;
the carbon dioxide decalcification system comprises a carbon dioxide gas conveying device, a solidification reaction device and a calcium carbonate product collecting tank which are connected in sequence; the outlet of the reverse osmosis membrane device is connected with the feed inlet of the solidification reaction device through a pipeline;
the falling film evaporation system comprises a falling film heater and a falling film separator which are connected, and an outlet of the solidification reaction device is connected with an inlet of the falling film separator;
the concentrated brine alkali preparation system comprises a caustic soda preparation device and a caustic soda conveying device which are connected, and the outlet of the falling film separator is respectively connected with the caustic soda preparation device and the inlet of the falling film heater; the inlet of the falling film separator is respectively connected with the outlet of the falling film heater and the outlet of the solidification reaction device; and the outlet of the caustic soda conveying device is connected with the feed inlet of the curing reaction device.
Further, the solidification reaction device comprises a feeding gas washing section, a reaction growth section and an ageing discharge section;
the feeding gas washing section comprises spray pipes which are arranged in a layered manner, a plurality of spray heads are uniformly arranged below the spray pipes, one end of each spray pipe is plugged, and the other end of each spray pipe is respectively connected with the reverse osmosis membrane device and the caustic soda conveying device through a feed inlet positioned outside the curing reaction device;
the reaction growth section comprises an upward pushing type internal circulation stirrer and a cylindrical radial flow control plate with upper and lower openings, wherein the upward pushing type internal circulation stirrer is fixed in the solidification reaction device, and the internal circulation stirrer is positioned at the center of the radial flow control plate;
the aging discharging section comprises a carbon dioxide air inlet connected with a carbon dioxide gas conveying device, a carbon dioxide gas distribution ring with small holes and a calcium carbonate discharging port connected with a calcium carbonate product collecting tank; the carbon dioxide gas distribution ring is of a tubular ring shape with the upper end covered with the vent holes, the inner diameter of the carbon dioxide gas distribution ring is larger than that of the radial flow control plate, the radial flow control plate is positioned on the inner side of the carbon dioxide gas distribution ring, and carbon dioxide gas enters the carbon dioxide gas distribution ring through the carbon dioxide gas inlet and then upwards enters the curing reaction device through the vent holes.
Further, the processing method of the CCS byproduct calcium-containing brine recycling processing system comprises the following steps:
s1, separating and purifying calcium salt-containing water: the CCS byproduct calcium-containing brine passes through a nanofiltration membrane device and a reverse osmosis membrane device to obtain concentrated salt solution;
s2, solidifying reaction of carbon dioxide: the carbon dioxide gas to be solidified, which is obtained by the CCS process, is conveyed to a solidification reaction device through a carbon dioxide gas conveying device, namely a Roots blower, and the concentrated salt solution in S1 is conveyed to the solidification reaction device through a pipeline, and caustic soda, which is prepared by a caustic soda preparation device, is also conveyed to the solidification reaction device through a caustic soda conveying device, namely a centrifugal pump; the alkali liquor forms an overall upward flow field on the inner side of the radial flow control plate under the action of an upward pushing type internal circulation stirrer, the alkali liquor forms an overall downward flow field on the outer side of the radial flow control plate, and the downward flow field is in reverse contact with carbon dioxide gas entering the curing reaction device through a carbon dioxide gas distribution ring to form a multistage gradient reaction environment; because the concentration of the carbon dioxide is gradually reduced from bottom to top, and the small-particle calcium carbonate is above the liquid and the large-particle calcium carbonate is below under the action of the gas floating upwards; the large-particle calcium carbonate contacts with high-concentration carbon dioxide gas at the lower part to promote further growth, and the large-particle calcium carbonate grown to a certain extent is discharged to a calcium carbonate product collecting tank through a calcium carbonate discharge port; a large amount of small-particle calcium carbonate positioned above the water-soluble calcium carbonate contacts with low-concentration carbon dioxide gas, so that crystals are prevented from bursting;
s3, evaporating and concentrating the brine: the reaction mother liquor after the S2 reaction is sodium chloride solution, and enters a falling film evaporation system for further concentration;
s4, preparing circulating caustic soda: sodium chloride solution raw material after S3 concentration is used for preparing caustic soda in a caustic soda preparation device for S2 use, and self-circulation is realized.
Further, the reaction time of the curing reaction device is calculated as follows:
t＝C2/(C1*C3)；
wherein t is the reaction time of the curing reaction device, and h;
c1 is the concentration of calcium chloride after being treated by a membrane concentration system, g/L;
c2 is the concentration of sodium chloride, g/L, after the treatment of the falling film evaporation system;
c3 is the purity of the carbon dioxide gas to be solidified obtained by the CCS process.
Further, the concentration C1 of the calcium chloride after being treated by the membrane concentration system is 60g/L; the concentration C2 of sodium chloride after the treatment of the falling film evaporation system is 220g/L; the CCS process yields a carbon dioxide gas concentration C3 to be solidified of 93%.
Compared with the prior art, the application has the following beneficial effects:
the application can convert calcium ions in the byproduct calcium-containing brine into calcium carbonate products, and no solid waste of mixed salt is generated; the existing carbon dioxide gas to be solidified in the CCS process is utilized without additionally purchasing a large amount of sodium carbonate, and the recycling of calcium-containing brine is realized and the carbon is further fixed; the existing sodium chloride brine is utilized to prepare the alkali without additionally purchasing a large amount of caustic soda, so that the self-circulation of the system materials is realized.
Specifically, the curing reaction device provides a good space for gas-liquid reaction by arranging an ageing and discharging section, a reaction and growth section and a feeding and gas washing section in sequence from bottom to top; the carbon dioxide gas distribution ring with the vent holes in the ageing and discharging section can promote the recrystallization process of calcium carbonate while uniformly distributing gas, so as to purify the quality of the product; the internal circulation stirring and radial flow control plate of the reaction growth section can realize the full mixing of the reaction materials and further reduce the supersaturation degree; the spray heads in layered arrangement of the feeding gas washing section realize the atomization distribution of CCS byproduct salt-containing water and the full solidification and carbon removal of carbon dioxide gas.
Drawings
FIG. 1 is a process flow diagram of a CCS byproduct calcium-containing brine recycling treatment system provided by an embodiment of the application;
FIG. 2 is a schematic diagram of a curing reaction device in a CCS byproduct calcium-containing brine recycling system according to an embodiment of the application;
in the figure:
1-nanofiltration membrane device; 2-a reverse osmosis membrane device; 3-carbon dioxide gas conveying device; 4-a curing reaction device; a 5-calcium carbonate product collection tank; 6-falling film heater; 7-a falling film separator; 8-caustic soda preparation device; 9-caustic soda conveying device; 10-feeding a gas washing section; 11-a reaction growth section; 12, an ageing and discharging section; 13-a spray head; 14-a feed inlet; 15-an internal circulation stirrer; 16-radial flow control plate; 17-carbon dioxide inlet; 18-carbon dioxide gas distribution ring; 19-calcium carbonate discharge port.
Detailed Description
The application is further described below with reference to fig. 1-2:
examples:
the application provides a CCS byproduct calcium-containing brine recycling treatment system, which comprises a membrane concentration system, a carbon dioxide decalcification system, a falling film evaporation system and a strong brine alkali-making system which are connected in sequence; the membrane concentration system comprises a nanofiltration membrane device 1 and a reverse osmosis membrane device 2 which are connected; the carbon dioxide decalcification system comprises a carbon dioxide gas conveying device 3, a solidification reaction device 4 and a calcium carbonate product collecting tank 5 which are sequentially connected, wherein the outlet of the reverse osmosis membrane device 2 is connected with the feed inlet of the solidification reaction device 4 through a pipeline; the falling film evaporation system comprises a falling film heater 6 and a falling film separator 7 which are connected, and the outlet of the solidification reaction device 4 is connected with the inlet of the falling film separator 7; the concentrated brine alkali preparation system comprises a caustic soda preparation device 8 and a caustic soda conveying device 9 which are connected, and the outlet of the falling film separator 7 is respectively connected with inlets of the caustic soda preparation device 8 and the falling film heater 6; the inlet of the falling film separator 6 is respectively connected with the falling film heater 6 and the outlet of the solidification reaction device 4; the outlet of the caustic soda conveying device 9 is connected with the feed inlet of the solidification reaction device 4;
the curing reaction device 4 comprises a feeding gas washing section 10, a reaction growth section 11 and an ageing discharge section 12, wherein the feeding gas washing section 10 comprises spray pipes which are arranged in a layered manner, a plurality of spray heads 13 are uniformly arranged below the spray pipes, one ends of the spray pipes are blocked, and the other ends of the spray pipes are respectively connected with the reverse osmosis membrane device 2 and the caustic soda conveying device 9 through a feed inlet 14 positioned outside the curing reaction device; the reaction growth section comprises an upward pushing type internal circulation stirrer 15 and a cylindrical radial flow control plate 16 with upper and lower openings, wherein the internal circulation stirrer 15 is fixed in the solidification reaction device, and the internal circulation stirrer 15 is positioned at the center of the radial flow control plate 16; the ageing and discharging section 12 comprises a carbon dioxide air inlet 17 connected with the carbon dioxide conveying device 3, a carbon dioxide air distribution ring 18 with small holes and a calcium carbonate discharging port 19 connected with the calcium carbonate product collecting tank 5. The carbon dioxide gas distribution ring 18 is in a tubular ring shape with the upper end being fully provided with vent holes, the inner diameter of the carbon dioxide gas distribution ring is larger than that of the radial flow control plate, the radial flow control plate is positioned at the inner side of the carbon dioxide gas distribution ring, and carbon dioxide gas enters the carbon dioxide gas distribution ring 18 through the carbon dioxide gas inlet 17 and then upwards enters the curing reaction device through the vent holes; the alkali liquor sprayed out of the spraying pipe forms an overall upward flow field on the inner side of the radial flow control plate 16 under the action of the push-up internal circulation stirrer 15, the alkali liquor forms an overall downward flow field on the outer side of the radial flow control plate 16, and the downward flow field and carbon dioxide gas entering the curing reaction device through a carbon dioxide gas distribution ring form reverse contact to form a multistage gradient reaction environment; because the concentration of the carbon dioxide is gradually reduced from bottom to top, and the small-particle calcium carbonate is above the liquid and the large-particle calcium carbonate is below under the action of the gas floating upwards; the large-particle calcium carbonate contacts with high-concentration carbon dioxide gas at the lower part to promote further growth, and the large-particle calcium carbonate grown to a certain degree is discharged to the calcium carbonate product collecting tank 5 through the calcium carbonate discharging hole 19. A large amount of small-particle calcium carbonate positioned above is contacted with low-concentration carbon dioxide gas, so that crystal burst nucleation is avoided.
The following experiment was conducted to calculate the reaction time of the curing reaction device 4:
the concentration of calcium chloride after the membrane concentration system treatment is respectively as follows: 30g/L,40g/L,50g/L,60g/L,70g/L,80g/L; the concentration of sodium chloride after the treatment of the falling film evaporation system is 220g/L; the purity of the carbon dioxide gas to be solidified obtained by the CCS process is respectively as follows: 98%,95%,93%,90%,85%,80%. The reaction time results of calcium chloride and carbon dioxide obtained by the experiment are shown in the following table:
and determining the reaction time of the curing reaction device 4 according to the experimental data, wherein the calculation formula is as follows:
t＝C2/(C1*C3)；
wherein t is the reaction time of the curing reaction device, and h;
c1 is the concentration of calcium chloride after being treated by a membrane concentration system, g/L;
c2 is the concentration of sodium chloride, g/L, after the treatment of the falling film evaporation system;
c3 is the purity of the carbon dioxide gas to be solidified obtained by the CCS process.
The principle is that the solidification reaction time t is inversely proportional to the concentration C1 of calcium chloride after being processed by a film concentration system, inversely proportional to the purity C3 of carbon dioxide gas to be solidified obtained by a CCS process, and directly proportional to the concentration C2 of sodium chloride after being processed by a falling film evaporation system.
The processing method of the CCS byproduct calcium-containing brine recycling processing system comprises the following steps:
s1, separating and purifying calcium salt-containing water: the CCS byproduct calcium-containing brine is subjected to a nanofiltration membrane device 1 for separating a divalent ion and a reverse osmosis membrane device 2 for improving the concentration to obtain a concentrated salt solution;
specific: the concentration of calcium chloride in the CCS byproduct calcium-containing brine is 5.1g/L, the concentration of sodium chloride is 2.2g/L, and after the calcium-containing brine is treated by a nanofiltration membrane device, the nanofiltration operation pressure is 1.5MPa, so that the concentration of calcium chloride in the separated and concentrated calcium-containing brine is 11.5g/L; pumping the calcium-containing brine into a reverse osmosis membrane device 2 for treatment, wherein the operating pressure is 8MPa, so as to obtain a concentrated salt solution, and the concentration C1 of the calcium chloride treated by a membrane concentration system is 60g/L;
s2, solidifying reaction of carbon dioxide: the carbon dioxide gas to be solidified, which is obtained by the CCS process, is conveyed to the solidification reaction device 4 through the carbon dioxide gas conveying device 3, namely a Roots blower, the concentrated salt solution in S1 is conveyed to the solidification reaction device 4 through the feed inlet 14, and the caustic soda, which is prepared by the caustic soda preparation device 8, is conveyed to the solidification reaction device 4 through the caustic soda conveying device 9, namely a centrifugal pump;
the materials are reacted in a curing reaction device 4;
the calcium carbonate solid is obtained through the reaction, and the recycling of calcium-containing brine is realized, and meanwhile, the carbon is further fixed;
wherein the concentration C3 of the carbon dioxide gas to be solidified obtained by the CCS process is 93%;
wherein, the sodium chloride solution raw material caustic soda preparation device 8 is used for preparing alkali by diaphragm electrolysis, the process voltage is 3.0V, the current density is 4kAm2, and the caustic soda concentration is 34%;
solidifying carbon dioxide to obtain calcium carbonate solid, converting calcium in the reaction mother liquor into sodium, and ensuring that the concentration of sodium chloride is 63.2g/L;
s3, evaporating and concentrating the brine: the reaction mother solution after S2 decalcification is sodium chloride solution, and is further concentrated in a falling film evaporation system; controlling the evaporation temperature of the falling film heater 6 to be 108 ℃, and concentrating the sodium chloride solution of the reaction mother liquor in the falling film separator 7 until the C2 is 220g/L; calculating the reaction time t=c2/(C1×c3) =220/(60×93%) =3.9 hours of the curing reaction device;
s4, preparing circulating caustic soda: preparing caustic soda in a caustic soda preparation device 8 from the sodium chloride solution raw material concentrated in S3 for S2 to use, so as to realize self circulation; wherein, the control voltage of the diaphragm electrolysis alkali preparation process of the caustic soda preparation device 8 is 3.0V, the current density is 4kAm, the caustic soda concentration is 34 percent, and the caustic soda is conveyed to the solidification reaction device 4 through the caustic soda conveying device 9, namely a centrifugal pump to carry out the solidification reaction of the carbon dioxide of S2.
In summary, the reaction crystallization system of the application utilizes the existing carbon dioxide gas to be solidified in the CCS process to treat the byproduct calcium-containing brine, adopts the material circulation process mode, and utilizes the novel solidification reaction device to realize recycling of the calcium-containing brine and further solidify and remove carbon.
By using the technical scheme of the application or under the inspired by the technical scheme of the application, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical effects fall into the protection scope of the application.
Claims (3)
1. A treatment method of a CCS byproduct calcium-containing brine recycling treatment system is characterized by comprising the following steps of: the system comprises a membrane concentration system, a carbon dioxide decalcification system, a falling film evaporation system and a strong brine alkali making system which are connected in sequence;
the membrane concentration system comprises a nanofiltration membrane device and a reverse osmosis membrane device which are connected;
the carbon dioxide decalcification system comprises a carbon dioxide gas conveying device, a solidification reaction device and a calcium carbonate product collecting tank which are connected in sequence; the outlet of the reverse osmosis membrane device is connected with the feed inlet of the solidification reaction device through a pipeline;
the falling film evaporation system comprises a falling film heater and a falling film separator which are connected, and an outlet of the solidification reaction device is connected with an inlet of the falling film separator;
the concentrated brine alkali preparation system comprises a caustic soda preparation device and a caustic soda conveying device which are connected, and the outlet of the falling film separator is respectively connected with the caustic soda preparation device and the inlet of the falling film heater; the inlet of the falling film separator is respectively connected with the outlet of the falling film heater and the outlet of the solidification reaction device; the outlet of the caustic soda conveying device is connected with the feed inlet of the curing reaction device;
the curing reaction device comprises a feeding gas washing section, a reaction growth section and an ageing discharge section;
the feeding gas washing section comprises spray pipes which are arranged in a layered manner, a plurality of spray heads are uniformly arranged below the spray pipes, one end of each spray pipe is plugged, and the other end of each spray pipe is respectively connected with the reverse osmosis membrane device and the caustic soda conveying device through a feed inlet positioned outside the curing reaction device;
the reaction growth section comprises an upward pushing type internal circulation stirrer and a cylindrical radial flow control plate with upper and lower openings, wherein the upward pushing type internal circulation stirrer is fixed in the solidification reaction device, and the internal circulation stirrer is positioned at the center of the radial flow control plate;
the aging discharging section comprises a carbon dioxide air inlet connected with a carbon dioxide gas conveying device, a carbon dioxide gas distribution ring with small holes and a calcium carbonate discharging port connected with a calcium carbonate product collecting tank; the carbon dioxide gas distribution ring is in a tubular ring shape, the upper end of the tubular ring is fully provided with vent holes, the inner diameter of the carbon dioxide gas distribution ring is larger than the inner diameter of the radial flow control plate, the radial flow control plate is positioned at the inner side of the carbon dioxide gas distribution ring, and carbon dioxide gas enters the carbon dioxide gas distribution ring through a carbon dioxide gas inlet and then upwards enters the curing reaction device through the vent holes;
the processing method comprises the following steps:
s1, separating and purifying calcium salt-containing water: the CCS byproduct calcium-containing brine passes through a nanofiltration membrane device and a reverse osmosis membrane device to obtain concentrated salt solution;
s2, solidifying reaction of carbon dioxide: the carbon dioxide gas to be solidified, which is obtained by the CCS process, is conveyed to a solidification reaction device through a carbon dioxide gas conveying device, namely a Roots blower, and the concentrated salt solution in S1 is conveyed to the solidification reaction device through a pipeline, and caustic soda, which is prepared by a caustic soda preparation device, is also conveyed to the solidification reaction device through a caustic soda conveying device, namely a centrifugal pump; the alkali liquor forms an overall upward flow field on the inner side of the radial flow control plate under the action of an upward pushing type internal circulation stirrer, the alkali liquor forms an overall downward flow field on the outer side of the radial flow control plate, and the downward flow field is in reverse contact with carbon dioxide gas entering the curing reaction device through a carbon dioxide gas distribution ring to form a multistage gradient reaction environment; because the concentration of the carbon dioxide is gradually reduced from bottom to top, and the small-particle calcium carbonate is above the liquid and the large-particle calcium carbonate is below under the action of the gas floating upwards; the large-particle calcium carbonate contacts with high-concentration carbon dioxide gas at the lower part to promote further growth, and the large-particle calcium carbonate grown to a certain extent is discharged to a calcium carbonate product collecting tank through a calcium carbonate discharge port; a large amount of small-particle calcium carbonate positioned above the water-soluble calcium carbonate contacts with low-concentration carbon dioxide gas, so that crystals are prevented from bursting;
s3, evaporating and concentrating the brine: the reaction mother liquor after the S2 reaction is sodium chloride solution, and enters a falling film evaporation system for further concentration;
s4, preparing circulating caustic soda: sodium chloride solution raw material after S3 concentration is used for preparing caustic soda in a caustic soda preparation device for S2 use, and self-circulation is realized.
2. The method for processing CCS byproduct calcium-containing brine recycling system according to claim 1, wherein a reaction time of said curing reaction device is calculated as:
t＝C2/(C1*C3)；
wherein t is the reaction time of the curing reaction device, and h;
c1 is the concentration of calcium chloride after being treated by a membrane concentration system, g/L;
c2 is the concentration of sodium chloride, g/L, after the treatment of the falling film evaporation system;
c3 is the purity of the carbon dioxide gas to be solidified obtained by the CCS process.
3. The method for processing the CCS byproduct calcium-containing brine recycling system according to claim 2, wherein the concentration C1 of calcium chloride after processing by the membrane concentration system is 60g/L; the concentration C2 of sodium chloride after the treatment of the falling film evaporation system is 220g/L; the CCS process yields a carbon dioxide gas concentration C3 to be solidified of 93%.
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| US20060051274A1 (en) * | 2004-08-23 | 2006-03-09 | Wright Allen B | Removal of carbon dioxide from air |
| CN113087229A (en) * | 2021-04-28 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Carbon sequestration application system and method for concentrated seawater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060051274A1 (en) * | 2004-08-23 | 2006-03-09 | Wright Allen B | Removal of carbon dioxide from air |
| CN113087229A (en) * | 2021-04-28 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Carbon sequestration application system and method for concentrated seawater |
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