CN108499340A - A kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes - Google Patents
A kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes Download PDFInfo
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- 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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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The present invention relates to flue gases purification field, especially a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes include the following steps：S1, mercury oxidation adsorbing and removing process：It is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent surface, forms rich mercury absorbent；Removal process is desorbed in S2, mercury：Heating desorption is carried out to rich mercury absorbent, the bivalent mercury for staying in adsorbent surface is discharged in the form of gaseous elementary mercury completely again, carries out mercury recycling, and the carrier adsorption agent after being desorbed；S3, adsorbent activating and regenerating process：It is passed through activated gas, and heats to adsorbent activating and regenerating, the carrier adsorption agent after activating and regenerating is returned through first pipe to be realized in mercury oxidation adsorbing and removing reactor and recycle.The present invention can improve the recovery utilization rate of carrier adsorption agent and the recovery utilization rate of mercury.
Description
Technical field
The present invention relates to flue gases purification field more particularly to a kind of Mercury In Coal Combustion Flue Gas removings based on CLP processes
Recycling and adsorbent regeneration method.
Background technology
China is maximum coal production state and country of consumption in the world.The environmental contaminants that fire coal is brought are high,
In, mercury and mercuric compounds have become coal-fired flue-gas relaying dust, SOX、NOXThe fourth-largest pollutant later.Mercury is a kind of toxic
Heavy metal element generates serious prestige due to its stronger volatility, migration, cumulative bad to human health and natural environment
The side of body.It is promulgated in 2011 in China《Fossil-fuel power plant atmospheric pollutant emission standard》Provide the discharge standard of coal-burning power plant's mercury and mercuric compounds
It is 30 μ g/Nm3, special policies seminar of China Council for International Cooperation on Environment and Development (SPS Team) suggests China is current
The mercury emissions limit value of the coal-fired thermal power generation of execution is further stringent：It is changed to 3 μ g/Nm to 20203.In face of increasingly strict
Environmental protection standard is developed the demercuration technology of coal-burning power plant's economical and efficient with China's independent intellectual property right, can not only be subtracted conscientiously
Few harm of the mercury contaminants to ecological environment and human health, and the pressure that mercury emission reduction international convention is fulfiled in China can be effectively relieved
Power.Current mercury removal technology is broadly divided into three classes：It is taken off in removing (coal preparation technology, coal mild pyrolysis etc.), burning before burning
Except (collaboration for being carried out mercury using existing flue gas purifying equipment is subtracted for removing after (spraying into additive or catalyst etc. to burner hearth), burning
Row, demercuration adsorbent etc.), although these demercuration technologies can more efficiently shift the mercury in coal, reduces and enter atmospheric environment
In mercury content, but shift after mercury be enriched in the liquid or solids by-product such as coal washing liquid, flying dust, bottom ash, exist two
The problem of secondary pollution, is not carried out removing substantially, significantly reduces the utilization rate of valuable natural resources mercury.Therefore, it sends out
Open up efficient fuel coal mercury removal, mercury desorption recycles, sorbent circulation regeneration techniques have important science innovation meaning and huge
Big potential industrial application value.
The method that patent CN103285711A discloses mercury in a kind of Recovery Purifying tail gas chooses smeltery or sulfuric acid plant
Raw material zinc concentrate, lead concentrate, copper concentrate or troilite etc. be used as demercuration substance, by particle spray etc. modes and smoke contacts,
To remove the mercury in flue gas, the rich mercury substance after absorption is then returned into stove and is re-used, so that mercury is volatilized in stove, it will
It is recycled.This method can realize the removing and recycling of mercury, but since selected demercuration substance is smeltery or sulfuric acid
The raw material of factory can not reactivate recycling, cannot achieve the purpose of circularly removing recycling.Patent CN102489116A is public
A kind of coal-fired flue gas mercury removal method and device of recyclable adsorbent has been opened, NaBr, NaSO are utilized4, sodium oxalate, butanol and KI groups
At mixture aqueous solution to ordinary powder activated carbon carry out constant temperature impregnate be modified, improve demercuration efficiency, while heating purification
By-product mercury realizes the recycling of mercury.But after each demercuration, be only desorbed to containing mercury absorbent, and
Modified active is not impregnated again, and so, the active sites of activated carbon surface necessarily greatly reduce.Although the patent plus
Enter fresh acticarbon, has been mixed with regenerated acticarbon, but the part after last desorption
Activated carbon can not obtain the fresh activity charcoal for recycling, and being constantly added truly and need in the system
It is modified outside, increases cost and be also unable to reach effect modified online.
Invention content
The purpose of the present invention is to solve one for existing in the prior art the shortcomings that resource cannot recycle, and proposing
Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method of the kind based on CLP processes.
To achieve the goals above, present invention employs following technical solutions：
Design a kind of Mercury In Coal Combustion Flue Gas removing recycling based on CLP processes and adsorbent regeneration method, including following step
Suddenly：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters from the first air inlet in mercury oxidation adsorbing and removing reactor
With metallic compound carrier adsorption agent haptoreaction, it is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent
Surface forms rich mercury absorbent；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor enters mercury through second pipe
Desorption reaction device, and inert gas is passed through into mercury desorption reaction device through the second air inlet, while rich mercury absorbent is added
Thermal desorption, the bivalent mercury for staying in adsorbent surface are discharged in the form of gaseous elementary mercury completely again, and the rich mercury of generation is desorbed
Gas is taken out of by inert gas, and entering mercury condensate recycling device through the 4th pipeline carries out mercury recycling, and the carrier after being desorbed
Adsorbent；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent priming reaction through third pipeline
Device, while activated gas is passed through into adsorbent activated reactor through third air inlet, and heat to adsorbent activating and regenerating, it is living
Change the carrier adsorption agent after regeneration and returns to realization recycling in mercury oxidation adsorbing and removing reactor through first pipe.
Preferably, the ratio between the agent of metallic compound carrier adsorption and mercury fume volume are 100-2000mg/m in S13。
Preferably, metallic compound carrier adsorption agent used in S1 is metal oxide MeOXOr metal sulfide FeSX,
Me represents Mn or Co.
Preferably, mercury oxidation adsorbing and removing inside reactor temperature is 80 DEG C -180 DEG C.
Preferably, in S2 inert gas be nitrogen, helium, one or more of argon gas combination.
Preferably, the temperature in desorption reaction device is 250 DEG C -500 DEG C.
Preferably, the temperature in adsorbent activating and regenerating reactor is 250 DEG C -350 DEG C.
Preferably, the activated gas being passed through in S3 is air and H2The gaseous mixture of S gases.
A kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes proposed by the present invention, have
Beneficial effect is：
1, be based on chemical chain technology (CLP) reaction process can make whole system energy andLoss reduction；
2, realize that the desorption of mercury recycles, pollution abatement while improves the available of valuable natural resources mercury
Rate；
3, the online activating and regenerating for realizing demercuration carrier adsorption agent recycles, and substantially reduces demercuration cost；
4, it realizes absorption demercuration-heating desorption-gas modified active and regenerates continuous cyclic process, and adsorbent makes
It is longer with the time.
Description of the drawings
Fig. 1 is a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes proposed by the present invention
The process flow chart of method.
In figure：First air inlet 1, first pipe 2, mercury oxidation adsorbing and removing reactor 3, second pipe 4, the second air inlet
5, mercury desorption reaction device 6, third pipeline 7, third air inlet 8, adsorbent activated reactor 9, the 4th pipeline 10, mercury condensing recovery
Device 11, the first discharge port 12, the second discharge port 13, gas outlet 14.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Embodiment 1
Referring to Fig.1, a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes, including with
Lower step：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters mercury oxidation absorption from the first air inlet 1 with the speed of 5m/s
In elimination reaction device 3 and metallic compound carrier adsorption agent haptoreaction, 3 internal temperature of mercury oxidation adsorbing and removing reactor are 80
DEG C, the clean flue gas after demercuration is discharged from gas outlet 14；
It is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent surface, forms rich mercury absorbent, metal
The ratio between compound carrier adsorbent and mercury fume volume are 100mg/m3；Metallic compound carrier adsorption agent used in S1 is
Metal oxide MnOX；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor 3 enters through second pipe 4
Mercury desorption reaction device 6, and inert gas is passed through into mercury desorption reaction device 6 through the second air inlet 5, inert gas is nitrogen in S2
Gas；
Heating desorption is carried out to rich mercury absorbent simultaneously, the temperature in desorption reaction device 6 is 250 DEG C；Stay in adsorbent
The bivalent mercury on surface is discharged in the form of gaseous elementary mercury completely again, and the rich mercury gas that generation is desorbed is taken out of by inert gas,
Enter mercury condensate recycling device 11 through the 4th pipeline 10 and carry out mercury recycling, and the carrier adsorption agent after being desorbed；Rich mercury gas
In mercury condensate recycling device 11 after cooling, high concentration mercury is flowed out from the first discharge port 12, and output industry byproduct goes out from second
Material mouth 13 exports；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent priming reaction through third pipeline 7
Device 9, while activated gas is passed through into adsorbent activated reactor 9 through third air inlet 8, the activated gas being passed through in S3 is sky
Gas and H2The gaseous mixture of S gases；And heat to adsorbent activating and regenerating, the temperature in adsorbent activating and regenerating reactor 9 is 250
℃；Carrier adsorption agent after activating and regenerating is returned through first pipe 2 realizes recycling in mercury oxidation adsorbing and removing reactor 3.
Embodiment 2
Referring to Fig.1, a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes, including with
Lower step：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters mercury oxidation absorption from the first air inlet 1 with the speed of 5m/s
In elimination reaction device 3 and metallic compound carrier adsorption agent haptoreaction, 3 internal temperature of mercury oxidation adsorbing and removing reactor are 90
DEG C, the clean flue gas after demercuration is discharged from gas outlet 14；
It is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent surface, forms rich mercury absorbent, metal
The ratio between compound carrier adsorbent and mercury fume volume are 200mg/m3；Metallic compound carrier adsorption agent used in S1 is
Metal oxide CoOX；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor 3 enters through second pipe 4
Mercury desorption reaction device 6, and inert gas is passed through into mercury desorption reaction device 6 through the second air inlet 5, inert gas is helium in S2
Gas；
Heating desorption is carried out to rich mercury absorbent simultaneously, the temperature in desorption reaction device 6 is 300 DEG C；Stay in adsorbent
The bivalent mercury on surface is discharged in the form of gaseous elementary mercury completely again, and the rich mercury gas that generation is desorbed is taken out of by inert gas,
Enter mercury condensate recycling device 11 through the 4th pipeline 10 and carry out mercury recycling, and the carrier adsorption agent after being desorbed；Rich mercury gas
In mercury condensate recycling device 11 after cooling, high concentration mercury is flowed out from the first discharge port 12, and output industry byproduct goes out from second
Material mouth 13 exports；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent priming reaction through third pipeline 7
Device 9, while activated gas is passed through into adsorbent activated reactor 9 through third air inlet 8, the activated gas being passed through in S3 is sky
Gas and H2The gaseous mixture of S gases；And heat to adsorbent activating and regenerating, the temperature in adsorbent activating and regenerating reactor 9 is 320
℃；Carrier adsorption agent after activating and regenerating is returned through first pipe 2 realizes recycling in mercury oxidation adsorbing and removing reactor 3.
Embodiment 3
Referring to Fig.1, a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes, including with
Lower step：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters mercury oxidation absorption from the first air inlet 1 with the speed of 5m/s
It is with metallic compound carrier adsorption agent haptoreaction, 3 internal temperature of mercury oxidation adsorbing and removing reactor in elimination reaction device 3
120 DEG C, the clean flue gas after demercuration is discharged from gas outlet 14；
It is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent surface, forms rich mercury absorbent, metal
The ratio between compound carrier adsorbent and mercury fume volume are 1000mg/m3；Metallic compound carrier adsorption agent used in S1
For metal sulfide FeSX；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor 3 enters through second pipe 4
Mercury desorption reaction device 6, and inert gas is passed through into mercury desorption reaction device 6 through the second air inlet 5, inert gas is argon in S2
Gas；
Heating desorption is carried out to rich mercury absorbent simultaneously, the temperature in desorption reaction device 6 is 400 DEG C；Stay in adsorbent
The bivalent mercury on surface is discharged in the form of gaseous elementary mercury completely again, and the rich mercury gas that generation is desorbed is taken out of by inert gas,
Enter mercury condensate recycling device 11 through the 4th pipeline 10 and carry out mercury recycling, and the carrier adsorption agent after being desorbed；Rich mercury gas
In mercury condensate recycling device 11 after cooling, high concentration mercury is flowed out from the first discharge port 12, and output industry byproduct goes out from second
Material mouth 13 exports；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent priming reaction through third pipeline 7
Device 9, while activated gas is passed through into adsorbent activated reactor 9 through third air inlet 8, the activated gas being passed through in S3 is sky
The gaseous mixture of gas and H2S gases；And heat to adsorbent activating and regenerating, the temperature in adsorbent activating and regenerating reactor 9 is 320
℃；Carrier adsorption agent after activating and regenerating is returned through first pipe 2 realizes recycling in mercury oxidation adsorbing and removing reactor 3.
Embodiment 4
Referring to Fig.1, a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method based on CLP processes, including with
Lower step：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters mercury oxidation absorption from the first air inlet 1 with the speed of 5m/s
It is with metallic compound carrier adsorption agent haptoreaction, 3 internal temperature of mercury oxidation adsorbing and removing reactor in elimination reaction device 3
180 DEG C, the clean flue gas after demercuration is discharged from gas outlet 14；
It is bivalent mercury by the elemental mercury in flue gas, stays in carrier adsorption agent surface, forms rich mercury absorbent, metal
The ratio between compound carrier adsorbent and mercury fume volume are 2000mg/m3；Metallic compound carrier adsorption agent used in S1
For metal sulfide FeSX；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor 3 enters through second pipe 4
Mercury desorption reaction device 6, and inert gas is passed through into mercury desorption reaction device 6 through the second air inlet 5, inert gas is nitrogen in S2
The mixed gas of gas, helium, argon gas；
Heating desorption is carried out to rich mercury absorbent simultaneously, the temperature in desorption reaction device 6 is 500 DEG C；Stay in adsorbent
The bivalent mercury on surface is discharged in the form of gaseous elementary mercury completely again, and the rich mercury gas that generation is desorbed is taken out of by inert gas,
Enter mercury condensate recycling device 11 through the 4th pipeline 10 and carry out mercury recycling, and the carrier adsorption agent after being desorbed；Rich mercury gas
In mercury condensate recycling device 11 after cooling, high concentration mercury is flowed out from the first discharge port 12, and output industry byproduct goes out from second
Material mouth 13 exports；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent priming reaction through third pipeline 7
Device 9, while activated gas is passed through into adsorbent activated reactor 9 through third air inlet 8, the activated gas being passed through in S3 is sky
Gas and H2The gaseous mixture of S gases；And heat to adsorbent activating and regenerating, the temperature in adsorbent activating and regenerating reactor 9 is 350
℃；Carrier adsorption agent after activating and regenerating is returned through first pipe 2 realizes recycling in mercury oxidation adsorbing and removing reactor 3.
Operation principle：(1) during mercury oxidation adsorbing and removing, temperature is between 80 DEG C -180 DEG C, with metal oxide
MeOX(Me represents Mn or Co) is carrier adsorption agent, and the gaseous elemental mercury Hg0 in flue gas is adsorbed to MeOXSurface conversion is absorption
State Hg0, and then it is oxidized to form ADSORPTION STATE HgO, and stay in carrier adsorption agent surface；With metal sulfide FeSXIt is inhaled for carrier
At attached dose, the active sulphur atom on gaseous elemental mercury Hg0 and its surface directly occurs Heterogeneous oxidation reduction reaction and generates ADSORPTION STATE
HgS, and stay in carrier adsorption agent surface.Reaction equation is：Metal oxide：Gaseous elemental mercury Hg0 → ADSORPTION STATE Hg0,
ADSORPTION STATE Hg0+MeOX(s)→Hg-O≡MeOX-1(s)；Metal sulfide：Gaseous elemental mercury Hg0+Sorbent-S → Hg-S-
Sorbent.(O ≡ are the Lattice Oxygen or ADSORPTION STATE oxygen of metal oxide, and-S is ADSORPTION STATE sulphur active sites)；
(2) after the completion of adsorption reaction, rich mercury carrier adsorption agent heated under the inert atmosphere of 250 DEG C of -500 DEG C of temperature into
The desorption of row mercury, the HgO or HgS for staying in carrier adsorption agent surface are discharged in the form of gaseous state Hg0, are generated simultaneously completely again
O2With S steams.Reaction equation is：ADSORPTION STATE HgO → gaseous elemental Hg0 (g)+O2, ADSORPTION STATE HgS → gaseous elemental Hg0+S.
The rich mercury gas that desorption generates is taken out of by carrier gas, is recycled into condensing unit.Using metal sulfide FeSXCarrier is inhaled
At attached dose, the S steams of generation are recycled by condensing.
(3) the carrier adsorption agent after being desorbed enters reactivation reactor, at a temperature of 250 DEG C -350 DEG C, respectively with air
And H2S gases are as metal oxide MeOXWith metal sulfide FeSXActivated gas.Reaction equation is：Metal oxide：
MeOX-1+1/2O2→MeOX；Metal sulfide：Fe2O3(s)+H2S→FeSX+H2O。
(4) the carrier adsorption agent after activating and regenerating is again introduced into mercury adsorbing and removing reactor, realizes coal-fired flue-gas mercury removal
Recycling and the cyclic process of adsorbent reactivation.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. it is a kind of based on CLP processes Mercury In Coal Combustion Flue Gas removing recycling and adsorbent regeneration method, which is characterized in that including with
Lower step：
S1, mercury oxidation adsorbing and removing process：Mercury fume enters mercury oxidation adsorbing and removing reactor (3) from the first air inlet (1)
Elemental mercury in flue gas is bivalent mercury, stays in carrier adsorption by interior and metallic compound carrier adsorption agent haptoreaction
Agent surface forms rich mercury absorbent；
Removal process is desorbed in S2, mercury：Rich mercury absorbent in mercury oxidation adsorbing and removing reactor (3) enters through second pipe (4)
Mercury desorption reaction device (6), and inert gas is passed through into mercury desorption reaction device (6) through the second air inlet (5), while rich mercury is inhaled
Attached dose carries out heating desorption, and the bivalent mercury for staying in adsorbent surface is discharged in the form of gaseous elementary mercury completely again, desorption
The rich mercury gas of generation is taken out of by inert gas, and entering mercury condensate recycling device (11) through the 4th pipeline (10) carries out mercury recycling,
And the carrier adsorption agent after being desorbed；
S3, adsorbent activating and regenerating process：Carrier adsorption agent after desorption enters adsorbent activated reactor through third pipeline (7)
(9), it while through third air inlet (8) is passed through activated gas into adsorbent activated reactor (9), and heats and adsorbent is activated
It regenerates, the carrier adsorption agent after activating and regenerating returns through first pipe (2) and realizes cycle in mercury oxidation adsorbing and removing reactor (3)
It uses.
2. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：The ratio between the agent of metallic compound carrier adsorption and mercury fume volume are 100-2000mg/m in S13。
3. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：Metallic compound carrier adsorption agent used in S1 is metal oxide MeOXOr metal sulfide FeSX,
Me represents Mn or Co.
4. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：Mercury oxidation adsorbing and removing reactor (3) internal temperature is 80 DEG C -180 DEG C.
5. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：Inert gas is the combination of one or more of nitrogen, helium, argon gas in S2.
6. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：Temperature in desorption reaction device (6) is 250 DEG C -500 DEG C.
7. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：Temperature in adsorbent activating and regenerating reactor (9) is 250 DEG C -350 DEG C.
8. a kind of Mercury In Coal Combustion Flue Gas removing recycling and adsorbent reactivation side based on CLP processes according to claim 1
Method, it is characterised in that：The activated gas being passed through in S3 is air and H2The gaseous mixture of S gases.
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Cited By (5)
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|---|---|---|---|---|
| CN111001292A (en) * | 2019-11-29 | 2020-04-14 | 上海理工大学 | Coal chemical looping combustion demercuration device and method |
| CN112237822A (en) * | 2020-09-17 | 2021-01-19 | 中南大学 | Method for recovering elemental mercury in nonferrous smelting flue gas |
| CN112657479A (en) * | 2019-10-16 | 2021-04-16 | 大唐环境产业集团股份有限公司 | Regeneration method of demercuration adsorbent |
| CN114100592A (en) * | 2021-11-24 | 2022-03-01 | 中南大学 | Method for regenerating flue gas demercuration material and recovering elemental mercury |
| CN114733344A (en) * | 2022-05-05 | 2022-07-12 | 中南大学 | Flue gas mercury circulating capture method and system |
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