CN114375220A - Regeneration method of carbonic acid type layered double hydroxide and acid exhaust gas treatment equipment - Google Patents
Regeneration method of carbonic acid type layered double hydroxide and acid exhaust gas treatment equipment Download PDFInfo
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- B01D53/34—Chemical or biological purification of waste gases
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- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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Abstract
The purpose of the present invention is to provide a method for regenerating a carbonic acid type layered double hydroxide and an acid exhaust gas treatment facility, which can efficiently regenerate an anionic Mg-Al based layered double hydroxide (Mg-Al LDH) used in an acid exhaust gas treatment into a carbonic acid type Mg-Al LDH. A method for regenerating a carbonic acid type layered double hydroxide, which comprises bringing a mixed gas of water and carbon dioxide at a concentration of 5 vol% or more and at 70 ℃ or higher into contact with an anionic Mg-Al LDH produced in an acidic exhaust gas treatment using a carbonic acid type Mg-Al LDH, thereby regenerating the carbonic acid type Mg-Al LDH.
Description
Technical Field
The present invention relates to a method for regenerating a carbonic acid type layered double hydroxide used for treating acidic exhaust gas generated from a combustion facility such as a thermal power plant or an incineration facility, and an acidic exhaust gas treatment apparatus including a regeneration unit thereof.
Background
Harmful acidic substances such as hydrogen chloride, sulfur oxides, and nitrogen oxides are contained in combustion exhaust gas generated in thermal power generation, waste incineration, and the like. Accordingly, the acidic exhaust gas containing the acidic substance is treated by various methods for removing the acidic substance.
Among such methods for removing acidic substances, the present applicant has proposed a method for treating acidic exhaust gas using a carbonic acid type Mg — Al Layered Double Hydroxide (hereinafter, also referred to as Mg — Al LDH (layed Double Hydroxide)), a treating agent, and the like, as an efficient treatment technique capable of simultaneously treating and removing a plurality of acidic substances (see patent document 1).
The Mg-Al LDH is a treatment agent that can be regenerated for repeated use, and conventionally, as described in patent document 1, when a carbonic acid type Mg-Al LDH is used for an acid exhaust gas treatment to convert it into an anionic type Mg-Al LDH, the used layered double hydroxide is regenerated by mixing it with a carbonated aqueous solution.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2016-190199
Disclosure of Invention
Problems to be solved by the invention
The method of mixing the used layered double hydroxide with the aqueous carbonic acid solution as described above may be carried out in a layered double hydroxide regeneration facility installed outside the waste incineration facility. However, the above case has the following problems: the labor and cost burden is large when the layered double hydroxide is used for transporting used layered double hydroxide and regenerated layered double hydroxide between the waste incineration facility and the layered double hydroxide regeneration facility, or when an external facility independent of the waste incineration facility is installed.
In addition, when the used layered double hydroxide regeneration facility is installed in a waste incineration facility, a storage tank, a mixing tank, and the like for the aqueous carbonic acid solution must be installed and connected, and the entire facility must be scaled up.
The present invention has been made to solve the above-described technical problems, and an object of the present invention is to provide a method for regenerating a carbonic acid type layered double hydroxide and an acid exhaust gas treatment facility, which can efficiently regenerate a used anionic Mg — Al LDH in an acid exhaust gas treatment to a carbonic acid type Mg — Al LDH.
Means for solving the problems
The present invention is based on the following findings: the carbonic acid type layered double hydroxide can be efficiently regenerated by bringing the used layered double hydroxide in the acid exhaust gas treatment into contact with a gas containing water and a predetermined amount of carbon dioxide, particularly the treated gas in the acid exhaust gas treatment.
Namely, the present invention provides the following [1] to [4 ].
[1] A method for regenerating a carbonic acid type layered double hydroxide, wherein a mixed gas of 70 ℃ or higher containing water and carbon dioxide at a concentration of 5 vol% or higher is brought into contact with an anionic Mg-Al based layered double hydroxide produced in an acidic exhaust gas treatment using a carbonic acid type Mg-Al based layered double hydroxide to regenerate the carbonic acid type Mg-Al based layered double hydroxide.
[2] The method for regenerating a carbonic acid type layered double hydroxide according to the above [1], wherein the water content in the mixed gas is 10% or more.
[3] The method for regenerating a carbonic acid type layered double hydroxide according to the above [1] or [2], wherein the acidic exhaust gas treatment is a treatment of an acidic exhaust gas generated in a combustion facility, and a treated gas obtained by removing an acidic gas other than the treated carbon dioxide is used as the mixed gas.
[4] An acidic exhaust gas treatment device, comprising: a unit (1) for performing acidic exhaust gas treatment using a carbonic acid type Mg-Al layered double hydroxide; and a unit (2) for regenerating a carbonic acid type Mg-Al based layered double hydroxide by the regeneration method as described in any one of the above [1] to [3 ].
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the used layered double hydroxide in the acidic exhaust gas treatment can be regenerated to the carbonic acid type layered double hydroxide in the plant (onsite) without requiring large-scale facilities, and the regeneration treatment is advantageous in view of facilities, labor and cost burden as compared with the regeneration treatment in the regeneration facility outside the plant (offset).
In addition, the treated gas after the acid exhaust gas treatment can also be used, and the acid exhaust gas treatment device according to the present invention can efficiently regenerate the carbonic acid type layered double hydroxide.
Drawings
Fig. 1 is a schematic flow chart of an acidic exhaust gas treatment process using an acidic exhaust gas facility according to an embodiment of the present invention.
Detailed Description
Hereinafter, a method for regenerating a carbonic acid type layered double hydroxide and a part of an acidic exhaust gas treatment facility according to the present invention will be described with reference to the drawings.
[ method for regenerating carbonic acid type layered double hydroxide ]
The method for regenerating a carbonic acid type layered double hydroxide of the present invention is characterized in that: a mixed gas of 70 ℃ or higher containing water and carbon dioxide at a concentration of 5 vol% or higher is brought into contact with an anionic Mg-Al LDH produced in an acidic exhaust gas treatment using a carbonic acid type Mg-Al LDH to regenerate the carbonic acid type Mg-Al LDH.
As described above, the regeneration treatment of the anionic Mg — Al LDH after the acid exhaust treatment is performed by the contact with the gas containing water and a predetermined amount of carbon dioxide, whereby the regeneration to the carbonated Mg — Al LDH is efficiently performed.
< Carbonic acid type Mg-Al LDH >
The carbonic acid type Mg-Al LDH is provided with a hydroxide basic layer ([ Mg)2+ 1-xAl3+ x(OH)2]) With an intermediate layer of interlayer carbonate ions and interlayer water ([ (CO)3 2-)x/2·yH2O]) Nano particles in an alternately laminated structure. And are the following non-integral compounds: the hydroxide base layer has a positive charge of x equivalent, and carbonate ions are present in the intermediate layer as anions having a negative charge compensating for the positive charge.
The carbonic acid type Mg-Al LDH can take acid gas such as hydrogen chloride, sulfur dioxide, nitrogen dioxide and the like into the interlayer under the state of keeping the hydroxide basic layer. Therefore, it can be suitably used for acidic exhaust gas treatment for removing the acidic exhaust gas.
When the carbonic acid type Mg — Al LDH is used for the acid exhaust gas treatment, a layered double hydroxide other than the carbonic acid type Mg-Al LDH, or a chemical other than a layered double hydroxide such as calcium hydroxide (slaked lime), calcium oxide, Sodium bicarbonate (Sodium bicarbonate), Sodium carbonate, dolomite hydroxide, dolomite carbonate, aluminum hydroxide, aluminum oxide, magnesium hydroxide, or magnesium oxide may be used in combination. Among them, from the viewpoint of efficiently regenerating and reusing the carbonic acid type Mg — Al LDH, it is preferable that the carbonic acid type Mg — Al LDH is not mixed with other layered double hydroxides or agents.
As hydrotalcite, carbonated Mg-Al LDH also exists clay minerals produced naturally, but synthetic powders are generally used. The synthesis method is not particularly limited, and a known method (for example, the method described in patent document 1) can be used.
For example, a carbonated Mg-Al LDH can be obtained by: mixing magnesium nitrate (Mg (NO)3)2) With aluminium nitrate (Al (NO)3)3) An aqueous solution obtained by mixing Mg/Al (molar ratio) 2/1 was added dropwise to sodium carbonate (Na) while maintaining the pH at 10.52CO3) In aqueous solution.
When the acid gas is taken into the interlayer, the carbonic acid type Mg-Al LDH used in the acid exhaust gas treatment becomes an anionic type Mg-Al LDH in which the interlayer carbonate ions are exchanged for other anions derived from the acid exhaust gas, such as chloride ions, sulfate ions, nitrate ions, and the like. The anionic Mg-Al LDH generated in this way does not have the ability to further remove acidic exhaust gases. Thus, the anionic Mg-Al LDH is regenerated again by anion exchange to the carbonated Mg-Al LDH for reuse.
< gas mixture >
In the method for regenerating a carbonic acid type layered double hydroxide, anionic Mg-Al LDH of a used layered double hydroxide for acid exhaust gas treatment is subjected to anion exchange with a mixed gas of 70 ℃ or higher containing water and carbon dioxide at a concentration of 5 vol% or higher, thereby regenerating the carbonic acid type layered double hydroxide into the carbonic acid type Mg-Al LDH.
Such a regeneration method using gas contact is effective as a regeneration method to carbonic acid type Mg — Al LDH as compared with a conventional regeneration method using a liquid carbonated aqueous solution.
The mixed gas contains water and carbon dioxide at a concentration of 5 vol% or more.
Such a mixed gas containing water and carbon dioxide is used for regenerating a carbonic acid type Mg-Al LDH having interlayer carbonate ions and interlayer water in the interlayer by exchanging interlayer anions derived from acidic exhaust gas in the anionic type Mg-Al LDH for carbonate ions.
The term "water" as used herein refers to water vapor, which is gaseous water.
The content of carbon dioxide in the mixed gas is 5 vol% or more, preferably 10 vol% to 75 vol%, more preferably 10 vol% to 30 vol%.
If the content is 10 vol% or more, interlayer anions of the anionic Mg-Al LDH can be efficiently desorbed and exchanged for interlayer carbonate ions, thereby regenerating the carbonated Mg-Al LDH.
The amount of water in the mixed gas is preferably 10% or more, more preferably 15% to 30%, and further preferably 20% to 25%.
When the water content is 10% or more, interlayer anions of the anionic Mg-Al LDH can be efficiently desorbed to regenerate the carbonated Mg-Al LDH having interlayer carbonate ions and interlayer water in the interlayer.
The "water content" in the present invention means a water content corresponding to Japanese Industrial Standards (JIS) Z8808: 2013, the volume fraction [% ] of water vapor contained in the exhaust gas can be measured by a method according to the method using the moisture absorption tube described in the JIS standard.
The mixed gas may contain water and a gas other than carbon dioxide, and preferably contains no acid gas other than carbon dioxide. From the viewpoints of simplicity, cost, and the like in preparing a mixed gas containing a predetermined amount of water and a predetermined amount of carbon dioxide, the mixed gas is preferably prepared by mixing air.
The temperature of the mixed gas is set to 70 ℃ or higher, preferably 75 to 100 ℃, more preferably 80 to 90 ℃.
If the temperature is 70 ℃ or higher, the regeneration from anionic Mg-Al LDH to carbonic acid type Mg-Al LDH can be efficiently performed.
In the mixed gas, it is preferable to use a treated gas obtained by removing an acid gas other than carbon dioxide after treatment of an acid exhaust gas generated in a combustion facility.
By using such treated gas, the gas generated from the combustion facility can be effectively utilized, and the regeneration from the anionic Mg-Al LDH to the carbonic acid type Mg-Al LDH in the plant can be performed, thereby further improving the efficiency of the regeneration treatment.
[ acid exhaust gas treatment facility ]
The acidic exhaust gas treatment apparatus of the present invention is characterized by comprising: a unit (1) for performing acidic exhaust gas treatment using a carbonic acid type Mg-Al layered double hydroxide; and a unit (2) for regenerating the carbonic acid type Mg-Al layered double hydroxide by the above-mentioned regeneration method of the present invention.
According to the acid exhaust gas treatment facility, the carbonic acid type layered double hydroxide used in the acid exhaust gas treatment can be regenerated in the plant while the acid exhaust gas treatment is performed.
Fig. 1 shows a flow of an acidic exhaust gas treatment process using an acidic exhaust gas treatment facility according to an embodiment of the present invention. In the acid exhaust gas treatment process flow shown in fig. 1, first, the acid exhaust gas a discharged from the combustion facility 10 is introduced into the layered double hydroxide storage container 20 containing the carbonic acid type Mg — Al LDH. Then, in the layered double hydroxide storage container 20, the acidic exhaust gas a is brought into contact with the carbonic acid type Mg — Al LDH to perform an acidic exhaust gas treatment, and the treated gas b is sent to the exhaust duct 50 by an induction fan or the like (not shown) and is released into the atmosphere.
Further, as the acidic exhaust gas a, for example, in the case where the combustion facility 10 is a waste incinerator, the following gases can be suitably used: the high-temperature exhaust gas from the incinerator body is cooled by a heat exchanger such as a boiler, and the dust and other gases are removed by a dust collector.
As the acid exhaust gas treatment proceeds, the carbonic acid type Mg-Al LDH is changed to the anionic type Mg-Al LDH, and when the acid exhaust gas treatment capability is lowered, the line is switched by the switching valve V1 so that the acid exhaust gas a is introduced into the layered double hydroxide storage container 21 separately provided. Further, the switching valve V2 is operated, and a part of the treated gas b is introduced into the layered double hydroxide storage container 20 through the bypass line 40 by an induction fan or the like. The treated gas b, i.e., the mixed gas, is brought into contact with the anionic Mg-Al LDH in the manner described above to perform the regeneration treatment to the carbonated Mg-Al LDH.
In the regeneration treatment, the anions desorbed from the anionic Mg — Al LDH are absorbed by water (liquid) obtained by condensing the moisture in the acidic exhaust gas a, and stored in the regeneration treatment effluent recovery vessel 30 in the form of regeneration treatment effluent c.
When the regeneration process is completed, the switching valve V1 and the switching valve V2 are restored, and the acidic exhaust gas process in the layered double hydroxide storage container 20 is restarted. The determination of the end of the regeneration treatment of the carbonic acid type Mg — Al LDH may be made based on the analysis of the concentration of the anion component contained in the regeneration treatment wastewater c, or the like.
Even if the layered double hydroxide storage container 21 is separately provided, by performing the same regeneration treatment, the layered double hydroxide storage container 20 and the layered double hydroxide storage container 21 can be alternately used by switching the line by the switching valve V1, and the acidic exhaust gas treatment can be continuously and efficiently performed without stopping the flow of the acidic exhaust gas a.
Examples
The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.
[ test for regeneration treatment of Carbonic acid type layered double hydroxide ]
Chlorine-type Mg-Al LDH (anionic Mg-Al LDH sample) in which interlayer carbonate ions were replaced with interlayer chloride ions was prepared according to the following preparation example 1 by contacting hydrogen chloride gas as acidic exhaust gas for test with carbonic acid-type Mg-Al LDH. A column made of an acrylic resin having an inner diameter of 40mm was packed with 20g of the chlorine type Mg-Al LDH, and a regeneration treatment test was carried out under the conditions of the following examples and comparative examples.
The regeneration efficiency of the carbonic acid type layered double hydroxide was evaluated by measuring the chlorine content in Mg — Al LDH before and after the regeneration treatment test by ion chromatography and determining the desorption rate of chloride ions. The higher the desorption rate of chloride ions, the higher the regeneration efficiency from chloride type Mg-Al LDH to carbonate type Mg-Al LDH.
Preparation example 1
A column made of an acrylic resin having an inner diameter of 40mm was filled with a carbonic acid type Mg-Al LDH ("Kyoards (registered trademark) 500 PL", hydrotalcite manufactured and synthesized by Kyowa chemical industries, Ltd.), and hydrogen chloride gas was introduced into the air to circulate a hydrogen chloride-containing gas adjusted to a hydrogen chloride concentration of about 1000ppm at 100 ℃ until hydrogen chloride was detected at the column outlet, thereby obtaining a chlorine type Mg-Al LDH.
Furthermore, the formation of chlorine-type Mg-Al LDH was confirmed by powder X-ray diffraction measurement and ion chromatography.
(example 1)
The regeneration treatment test was performed by introducing water and carbon dioxide into the air and circulating a mixed gas adjusted to have a water content of 20%, a carbon dioxide concentration of 30% by volume and a temperature of 80 ℃ for 8 hours in the column packed with the chlorine type Mg — Al LDH.
The desorption rate of chloride ions in the regeneration treatment test was 96%.
Comparative example 1
The regeneration treatment test was performed by introducing carbon dioxide into the air and circulating a mixed gas at room temperature (25 ℃) adjusted to a carbon dioxide concentration of 30 vol% for 24 hours in the column packed with the chlorine-type Mg — Al LDH.
The desorption rate of chloride ions in the regeneration treatment test was 6%.
Comparative example 2
The regeneration treatment test was performed by introducing water into the air and circulating a mixed gas adjusted to a water content of 20% and 80 ℃ for 8 hours in the column packed with chlorine-type Mg — Al LDH.
The desorption rate of chloride ions in the regeneration treatment test was 37%.
Comparative example 3
The regeneration treatment test was performed by introducing carbon dioxide into the air and circulating a mixed gas at 80 ℃ adjusted to a carbon dioxide concentration of 30 vol% for 8 hours in the column packed with the chlorine-type Mg — Al LDH.
The desorption rate of chloride ions in the regeneration treatment test was 30%.
From the test results of the examples and comparative examples, it was confirmed that the anionic Mg-Al LDH can be efficiently regenerated into the carbonic acid type Mg-Al LDH by contacting the anionic Mg-Al LDH with a gas containing water and a predetermined amount of carbon dioxide.
Description of the reference numerals
10: combustion installation
20. 21: layered double hydroxide storage container
30: reclaimed treatment drainage recovery container
40: bypass line
50: exhaust pipe
V1, V2: switching valve
a: acid exhaust
b: treated gas
c: regeneration treatment of the wastewater
Claims (4)
1. A method for regenerating a carbonic acid type layered double hydroxide, wherein a mixed gas of 70 ℃ or higher containing water and carbon dioxide at a concentration of 5 vol% or higher is brought into contact with an anionic Mg-Al based layered double hydroxide produced in an acidic exhaust gas treatment using a carbonic acid type Mg-Al based layered double hydroxide to regenerate the carbonic acid type Mg-Al based layered double hydroxide.
2. The method for regenerating a carbonic acid type layered double hydroxide as claimed in claim 1, wherein the amount of water in the mixed gas is 10% or more.
3. The method for regenerating a carbonic acid type layered double hydroxide according to claim 1 or 2, wherein the acidic exhaust gas treatment is a treatment of an acidic exhaust gas generated in a combustion facility,
and using the treated gas from which the acid gas other than the treated carbon dioxide is removed as the mixed gas.
4. An acidic exhaust gas treatment device, comprising: a unit (1) for performing acidic exhaust gas treatment using a carbonic acid type Mg-Al layered double hydroxide; and a unit (2) for regenerating a carbonic acid type Mg-Al based layered double hydroxide by the regeneration method according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019223146A JP6898627B2 (en) | 2019-12-10 | 2019-12-10 | Carbonated layered double hydroxide regeneration method and acidic exhaust gas treatment equipment |
| JP2019-223146 | 2019-12-10 | ||
| PCT/JP2020/009329 WO2021117261A1 (en) | 2019-12-10 | 2020-03-05 | Method for regenerating carbonate-type layered double hydroxide and acidic exhaust gas treatment facility |
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| CN114375220A true CN114375220A (en) | 2022-04-19 |
| CN114375220B CN114375220B (en) | 2023-05-23 |
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| KR (1) | KR102511218B1 (en) |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057211A (en) * | 1990-06-08 | 1991-12-25 | 密歇根州州立大学托管委员会 | The method of from flue gas and other air-flows, removing oxysulfide with sorbent |
| US5358701A (en) * | 1992-11-16 | 1994-10-25 | Board Of Trustees Operating Michigan State University | Process of using layered double hydroxides as low temperature recyclable sorbents for the removal of SOx from flue gas and other gas streams |
| JPH08206432A (en) * | 1995-02-03 | 1996-08-13 | Nippon Sanso Kk | Gas treatment method and gas treatment agent |
| US5785938A (en) * | 1992-11-16 | 1998-07-28 | Board Of Trustees Operating Michigan State University | Process using recyclable sorbents for the removal of sox from flue gases and other gas streams |
| WO2009004132A2 (en) * | 2007-05-15 | 2009-01-08 | Ifp | Process for deacidification of a natural gas using layered double hydroxides |
| US20100279848A1 (en) * | 2007-12-05 | 2010-11-04 | National Institute For Materials Science | Preparation method for anion-exchangeable, layered double hydroxides |
| US20130174673A1 (en) * | 2010-06-14 | 2013-07-11 | Stichting Energiconderzoek Centrum Nederland | Gas sampling for co2 assay |
| US20150110698A1 (en) * | 2012-03-30 | 2015-04-23 | Fuel Tech, Inc. | Process for Sulfur Dioxide, Hydrochloric Acid and Mercury Mediation |
| JP2016190199A (en) * | 2015-03-31 | 2016-11-10 | 栗田工業株式会社 | Treatment method for acid exhaust gas generated from combustion facility, combustion facility and acid exhaust gas treatment agent |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5022038B2 (en) * | 2004-12-22 | 2012-09-12 | テイカ株式会社 | Layered double hydroxide that peels off in water, production method and use thereof |
| JP2017078014A (en) * | 2015-10-20 | 2017-04-27 | テイカ株式会社 | Layered double hydroxide in which hydrogen phosphate ion is intercalated, flame retardant containing layered double hydroxide, flame-retardant synthetic resin composition, and method for producing layered double hydroxide |
| CN107649093A (en) * | 2016-07-26 | 2018-02-02 | 中国石化扬子石油化工有限公司 | A kind of renovation process of aromatic hydrocarbon refining carclazyte |
-
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- 2020-03-05 CN CN202080064088.7A patent/CN114375220B/en active Active
- 2020-03-05 WO PCT/JP2020/009329 patent/WO2021117261A1/en active Application Filing
- 2020-03-05 KR KR1020227008188A patent/KR102511218B1/en active IP Right Grant
- 2020-03-11 TW TW109108022A patent/TWI809256B/en active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057211A (en) * | 1990-06-08 | 1991-12-25 | 密歇根州州立大学托管委员会 | The method of from flue gas and other air-flows, removing oxysulfide with sorbent |
| US5358701A (en) * | 1992-11-16 | 1994-10-25 | Board Of Trustees Operating Michigan State University | Process of using layered double hydroxides as low temperature recyclable sorbents for the removal of SOx from flue gas and other gas streams |
| US5785938A (en) * | 1992-11-16 | 1998-07-28 | Board Of Trustees Operating Michigan State University | Process using recyclable sorbents for the removal of sox from flue gases and other gas streams |
| JPH08206432A (en) * | 1995-02-03 | 1996-08-13 | Nippon Sanso Kk | Gas treatment method and gas treatment agent |
| WO2009004132A2 (en) * | 2007-05-15 | 2009-01-08 | Ifp | Process for deacidification of a natural gas using layered double hydroxides |
| US20100279848A1 (en) * | 2007-12-05 | 2010-11-04 | National Institute For Materials Science | Preparation method for anion-exchangeable, layered double hydroxides |
| US20130174673A1 (en) * | 2010-06-14 | 2013-07-11 | Stichting Energiconderzoek Centrum Nederland | Gas sampling for co2 assay |
| JP2013528815A (en) * | 2010-06-14 | 2013-07-11 | シュティヒティン・エネルギーオンデルツォイク・セントラム・ネーデルランド | Gas sampling for CO2 analysis |
| US20150110698A1 (en) * | 2012-03-30 | 2015-04-23 | Fuel Tech, Inc. | Process for Sulfur Dioxide, Hydrochloric Acid and Mercury Mediation |
| JP2016190199A (en) * | 2015-03-31 | 2016-11-10 | 栗田工業株式会社 | Treatment method for acid exhaust gas generated from combustion facility, combustion facility and acid exhaust gas treatment agent |
Also Published As
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| KR20220104675A (en) | 2022-07-26 |
| JP2021090913A (en) | 2021-06-17 |
| JP6898627B2 (en) | 2021-07-07 |
| TW202122349A (en) | 2021-06-16 |
| CN114375220B (en) | 2023-05-23 |
| WO2021117261A1 (en) | 2021-06-17 |
| TWI809256B (en) | 2023-07-21 |
| KR102511218B1 (en) | 2023-03-16 |
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