CN106731647B - A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration - Google Patents
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration Download PDFInfo
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- CN106731647B CN106731647B CN201611199125.7A CN201611199125A CN106731647B CN 106731647 B CN106731647 B CN 106731647B CN 201611199125 A CN201611199125 A CN 201611199125A CN 106731647 B CN106731647 B CN 106731647B
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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
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
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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
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/90—Chelants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/202—Polymeric adsorbents
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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
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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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
Abstract
The present invention relates to coal-fired flue gas desulfurization demercuration technical fields, especially a kind of modification of chitosan is used for coal-fired flue gas desulfurization, the method of demercuration, by by chitosan after thiosemicarbazides and oxidant are modified processing, so that after it enters pyrolusite pulp, it can be to the sulfur dioxide in coal-fired flue-gas, Elemental Mercury ingredient is oxidized to sulfuric acid and ionic mercury, sulfuric acid and manganese ion form manganese sulfate and enter, chitosan absorption after mercury ion is modified is complexed, it is adopted and is soaked in water again, so that the separation of manganese sulfate and complexing mercury, and under the collective effect of chitosan and pyrolusite, so that desulfuration efficiency reaches 87% or more in flue gas, demercuration efficiency has reached 85% or more, reduce sulfur dioxide in coal-fired flue-gas, the discharge of mercury ingredient, reduce environmental pollution.
Description
Technical field
The present invention relates to coal-fired flue gas desulfurization demercuration technical field, especially a kind of modification of chitosan is de- for coal-fired flue-gas
The method of sulphur, demercuration.
Background technique
Coal is one of main energy in China, occupies 70% or so of the western ancestral temple energy production in the whole nation.Coal resource such as
Under the premise of this abundantization, so that power plants still can also largely occur in a short time, still, containing a large amount of in coal
Harmful components, wherein more prominent with sulphur ingredient and mercury ingredient, sulphur ingredient is mainly present in flue gas in the form of sulfur dioxide
In, with flue gas emission in the environment after, be easy to cause the formation of acid rain；Mercury ingredient form present in flue gas is more rich
Richness has ionic, molecule-type, since mercury has stronger toxicity, if in the environment with flue gas emission, will enter lake
Pool, rivers further enter in organism, and methyl mercury is converted in organism, and methyl mercury is to organism metabolism
It is inhibited, therefore serious threat can be carried out to the health care belt of organism, therefore, for the flue gas that emits it is necessary to
It could discharge after treatment, otherwise will will cause the environmental disruption of large area.
Chitosan is that the chitin for having nature to be widely present passes through the natural polymer that deacetylation obtains,
It has biological functionality, biocompatibility, microorganism readily degradable, has the function of preferably activity and complexing, Neng Gou
METAL EXTRACTION field is widely applied.
It is had not been reported currently, chitosan is applied to the research in flue gas desulfurizing and hydrargyrum-removing.
Summary of the invention
In order to solve the above technical problems existing in the prior art, the present invention provides a kind of modification of chitosan for fire coal
Flue gas desulfurization, demercuration method.
It is achieved particular by following technical scheme:
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:0.7-1.5 after mixing, add and account for chitosan mass 3-
7% water, controlled at 10-20 DEG C, instillation accounts for 0.1-0.3 times of chitosan mass of potassium metaperiodate, stirs evenly, is changed
Property chitosan；
(2) pyrolusite powder is broken into powder, and adds water to be prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp
Additional amount is calculated as 5-9 times of modification of chitosan quality with pyrolusite powder, and adding water adjustment liquid-solid ratio is 3-7:1, is stirred evenly, spraying
It is dry, 20-80 mesh is crossed, powder sulfur and mercury removing agent is obtained；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through admittedly with 10-15L/min
In fixed bed reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
In height make coal-fired flue-gas from enter sulfur and mercury removing agent in from sulfur and mercury removing agent come out time be 10-20min, i.e.,
Achievable coal-fired flue gas desulfurization demercuration processing.
The potassium metaperiodate is replaced using potassium permanganate or postassium hypochlorite.
The pyrolusite after it is first heated to 300-500 DEG C, then is added water to be prepared into ore pulp after being pulverized.
The pyrolusite uses microwave radiation processing 10-20min, microwave irradiation power 100-230W before crushing.
The pyrolusite is after Jia Shui is prepared into ore pulp, using microwave radiation processing 10-20min, microwave irradiation power
For 100-230W.
The coal-fired flue-gas is 12-14L/min in the speed being passed through in fixed bed reactors.
The step, further include fixed bed reactors are processed coal-fired flue-gas sulfur and mercury removing agent adopt be soaked in water,
Filtration step.
By by chitosan after thiosemicarbazides and oxidant are modified processing so that after it enters pyrolusite pulp,
Sulfuric acid and ionic mercury can be oxidized to sulfur dioxide, the Elemental Mercury ingredient in coal-fired flue-gas, sulfuric acid and manganese ion form sulfuric acid
Manganese enters, and the chitosan absorption after mercury ion is modified is complexed, then is adopted and be soaked in water, so that point of manganese sulfate and complexing mercury
From, and under the collective effect of chitosan and pyrolusite, so that desulfuration efficiency reaches 87% or more in flue gas, demercuration efficiency reaches
To 85% or more, the discharge of sulfur dioxide in coal-fired flue-gas, mercury ingredient is reduced, environmental pollution is reduced.
Specific embodiment
It is limited below with reference to specific embodiment technical solution of the present invention is further, but claimed
Range is not only limited to made description.
In the course of the research, in certain operation schemes, modification of chitosan is used for the side of coal-fired flue gas desulfurization, demercuration
Method, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:0.7-1.5 after mixing, add and account for chitosan mass 3-
7% water, controlled at 10-20 DEG C, instillation accounts for 0.1-0.3 times of chitosan mass of potassium metaperiodate, stirs evenly, is changed
Property chitosan；
(2) pyrolusite powder is broken into powder, and adds water to be prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp
Additional amount is calculated as 5-9 times of modification of chitosan quality with pyrolusite powder, and adding water adjustment liquid-solid ratio is 3-7:1, is stirred evenly, spraying
It is dry, 20-80 mesh is crossed, powder sulfur and mercury removing agent is obtained；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through admittedly with 10-15L/min
In fixed bed reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
In height make coal-fired flue-gas from enter sulfur and mercury removing agent in from sulfur and mercury removing agent come out time be 10-20min, i.e.,
Achievable coal-fired flue gas desulfurization demercuration processing.
In certain embodiments, the potassium metaperiodate is replaced using potassium permanganate or postassium hypochlorite.
In certain embodiments, the pyrolusite after it is first heated to 300-500 DEG C, then is added after being pulverized
Water is prepared into ore pulp.
In certain embodiments, the pyrolusite uses microwave radiation processing 10-20min, microwave radiation before crushing
Power is 100-230W.
In certain embodiments, the pyrolusite is after Jia Shui is prepared into ore pulp, using microwave radiation processing 10-
20min, microwave irradiation power 100-230W.
In certain embodiments, the coal-fired flue-gas is 12-14L/min in the speed being passed through in fixed bed reactors.
In certain embodiments, the step further includes that fixed bed reactors are processed to the desulfurization of coal-fired flue-gas to take off
Mercurial adopt be soaked in water, filtration step.
Embodiment 1
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:0.7 after mixing, add and account for chitosan mass 3%
Water, controlled at 10 DEG C, instillation accounts for 0.1 times of chitosan mass of potassium metaperiodate, stirs evenly, obtains modification of chitosan；
(2) pyrolusite powder is broken into powder, and adds water to be prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp
Additional amount is calculated as 5 times of modification of chitosan quality with pyrolusite powder, and adding water adjustment liquid-solid ratio is 3:1, is stirred evenly, spraying dry
It is dry, 20 meshes are crossed, powder sulfur and mercury removing agent is obtained；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 10L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 10min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
Embodiment 2
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:1.5 after mixing, add and account for chitosan mass 7%
Water, controlled at 20 DEG C, instillation accounts for 0.3 times of chitosan mass of potassium permanganate, stirs evenly, obtains modification of chitosan；
(2) pyrolusite powder is broken into powder, after being heated to 300 DEG C, and adds water to be prepared into ore pulp, then ore pulp is added and is modified
In chitosan, ore pulp additional amount is calculated as 9 times of modification of chitosan quality with pyrolusite powder, and adding water adjustment liquid-solid ratio is 7:1, stirring
Uniformly, it is spray-dried, crosses 80 meshes, obtain powder sulfur and mercury removing agent；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 15L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 20min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
Embodiment 3
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:1.1 after mixing, add and account for chitosan mass 5%
Water, controlled at 15 DEG C, instillation accounts for 0.2 times of chitosan mass of postassium hypochlorite, stirs evenly, obtains modification of chitosan；
(2) pyrolusite is used into microwave radiation processing 10min, microwave irradiation power 230W, is ground into powder, and add water
It is prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp additional amount is calculated as the 7 of modification of chitosan quality with pyrolusite powder
Times, adding water adjustment liquid-solid ratio is 5:1, stirs evenly, is spray-dried, crosses 60 meshes, obtain powder sulfur and mercury removing agent；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 13L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 15min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
Embodiment 4
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:1.3 after mixing, add and account for chitosan mass 4%
Water, controlled at 17 DEG C, instillation accounts for 0.1 times of chitosan mass of potassium metaperiodate, stirs evenly, obtains modification of chitosan；
(2) microwave radiation processing 20min, microwave irradiation power 100W is used to be ground into powder, be heated to pyrolusite
After 500 DEG C, and water is added to be prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp additional amount is calculated as changing with pyrolusite powder
Property 8 times of chitosan mass, add water adjustment liquid-solid ratio to be 4:1, stir evenly, be spray-dried, cross 30 meshes, obtain powder desulfurization
Mercury removal agent；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 12L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 13min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
Embodiment 5
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:0.9 after mixing, add and account for chitosan mass 6%
Water, controlled at 14 DEG C, instillation accounts for 0.3 times of chitosan mass of potassium metaperiodate, stirs evenly, obtains modification of chitosan；
(2) pyrolusite powder is broken into powder, after being heated to 370 DEG C, and water is added to be prepared into ore pulp, using microwave radiation processing
13min, microwave irradiation power 140W.Ore pulp is added in modification of chitosan again, ore pulp additional amount is calculated as changing with pyrolusite powder
Property 6 times of chitosan mass, add water adjustment liquid-solid ratio to be 6:1, stir evenly, be spray-dried, cross 70 meshes, obtain powder desulfurization
Mercury removal agent；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 14L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 16min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
Embodiment 6
A kind of method that modification of chitosan is used for coal-fired flue gas desulfurization, demercuration, comprising the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:1.4 after mixing, add and account for chitosan mass 5.5%
Water instill controlled at 16 DEG C and account for 0.15 times of chitosan mass of potassium metaperiodate, stir evenly, obtain modification of chitosan；
(2) pyrolusite powder is broken into powder, after being heated to 400 DEG C, and water is added to be prepared into ore pulp, using microwave radiation processing
15min, microwave irradiation power 170W.Ore pulp is added in modification of chitosan again, ore pulp additional amount is calculated as changing with pyrolusite powder
Property 7 times of chitosan mass, add water adjustment liquid-solid ratio to be 5:1, stir evenly, be spray-dried, cross 40 meshes, obtain powder desulfurization
Mercury removal agent；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 11L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 19min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be completed
The processing of coal-fired flue gas desulfurization demercuration.
When crossing coal-fired flue gas desulfurization mercury removal agent using water progress immersion treatment, water temperature is room temperature for the invention, should
Soaking process can be realized and be dissolved in water manganese sulfate, and the ingredient that mercury ion is complexed is entered in slag, so that sulphur ingredient and mercury
Ingredient separates after being detached, so that byproduct is manganese sulfate, high degree improves the additional of coal-fired flue-gas processing
Value.
The invention enters the sulphur before handling in fixed bed reactors to flue gas for handling in above-described embodiment
Content and mercury content are detected, and to processing coal-fired flue-gas after fixed bed reactors in sulfur and mercury removing agent in sulphur ingredient with
The content of mercury ingredient is detected, and the results are shown in Table 1:
Table 1
By upper table data show it can be seen from the method for the invention enable to the sulphur ingredient in coal-fired flue-gas to remove
Rate reaches 87% or more, is preferably able to reach 97% or more；The removal efficiency of mercury ingredient reaches 85% or more, preferably reach 98% with
On.
Above embodiments and test result are only limitted to do the attainable technical effect of technical solution institute of the invention
Illustrate out, in order to which technical solution of the those skilled in the art to the invention makes correct understanding, those skilled in the art
On this basis, the improvement for the non-protruding essential characteristics and non-significant progress made belongs to the guarantor of the invention to member
Protect range.
Claims (6)
1. a kind of method of modification of chitosan for coal-fired flue gas desulfurization, demercuration, which comprises the following steps:
(1) by chitosan and thiosemicarbazides according to mass ratio be 1:0.7-1.5 after mixing, add and account for chitosan mass 3-7%'s
Water, controlled at 10-20 DEG C, instillation accounts for 0.1-0.3 times of chitosan mass of potassium metaperiodate, stirs evenly, and obtains modified shell
Glycan；
(2) pyrolusite powder is broken into powder, and adds water to be prepared into ore pulp, then ore pulp is added in modification of chitosan, ore pulp is added
Amount is calculated as 5-9 times of modification of chitosan quality with pyrolusite powder, and adding water adjustment liquid-solid ratio is 3-7:1, is stirred evenly, spraying dry
It is dry, 20-80 mesh is crossed, powder sulfur and mercury removing agent is obtained；
(3) powder sulfur and mercury removing agent is filled in fixed bed reactors, coal-fired flue-gas is passed through fixed bed with 10-15L/min
In reactor, so that coal-fired flue-gas and fixed bed reactors contact action, sulfur and mercury removing agent are filled in fixed bed reactors
Height makes coal-fired flue-gas be 10-20min to the time come out from sulfur and mercury removing agent from entrance sulfur and mercury removing agent, can be complete
It is handled at coal-fired flue gas desulfurization demercuration；
The potassium metaperiodate is replaced using potassium permanganate or postassium hypochlorite.
2. method of the modification of chitosan as described in claim 1 for coal-fired flue gas desulfurization, demercuration, which is characterized in that described
Pyrolusite after it is first heated to 300-500 DEG C, then water is added to be prepared into ore pulp after being pulverized.
3. method of the modification of chitosan as claimed in claim 1 or 2 for coal-fired flue gas desulfurization, demercuration, which is characterized in that institute
The pyrolusite stated uses microwave radiation processing 10-20min, microwave irradiation power 100-230W before crushing.
4. method of the modification of chitosan as claimed in claim 1 or 2 for coal-fired flue gas desulfurization, demercuration, which is characterized in that institute
The pyrolusite stated is after Jia Shui is prepared into ore pulp, using microwave radiation processing 10-20min, microwave irradiation power 100-230W.
5. method of the modification of chitosan as described in claim 1 for coal-fired flue gas desulfurization, demercuration, which is characterized in that described
Coal-fired flue-gas, the speed being passed through in fixed bed reactors be 12-14L/min.
6. method of the modification of chitosan as described in claim 1 for coal-fired flue gas desulfurization, demercuration, which is characterized in that described
The step of, further include fixed bed reactors are processed coal-fired flue-gas sulfur and mercury removing agent adopt be soaked in water, filtration step.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543759A (en) * | 2009-03-27 | 2009-09-30 | 华中科技大学 | Adsorbent for removing Hg<0> in fire coal flue gas |
| CN105289261A (en) * | 2015-11-20 | 2016-02-03 | 中南大学 | Washing liquid for eluting mercury in mercury-containing flue gas and method for recovering mercury form mercury-containing flue gas |
| CN105688647A (en) * | 2016-03-16 | 2016-06-22 | 贵州大学 | Method for dry desulfurization and demercuration of sintering flue gas containing mercury by means of low-grade pyrolusite |
-
2016
- 2016-12-22 CN CN201611199125.7A patent/CN106731647B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543759A (en) * | 2009-03-27 | 2009-09-30 | 华中科技大学 | Adsorbent for removing Hg<0> in fire coal flue gas |
| CN105289261A (en) * | 2015-11-20 | 2016-02-03 | 中南大学 | Washing liquid for eluting mercury in mercury-containing flue gas and method for recovering mercury form mercury-containing flue gas |
| CN105688647A (en) * | 2016-03-16 | 2016-06-22 | 贵州大学 | Method for dry desulfurization and demercuration of sintering flue gas containing mercury by means of low-grade pyrolusite |
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