CN106731464A - The removal methods of mercury and sulphur in a kind of mercurous, sulphur-containing exhaust gas - Google Patents
The removal methods of mercury and sulphur in a kind of mercurous, sulphur-containing exhaust gas Download PDFInfo
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- CN106731464A CN106731464A CN201611200083.4A CN201611200083A CN106731464A CN 106731464 A CN106731464 A CN 106731464A CN 201611200083 A CN201611200083 A CN 201611200083A CN 106731464 A CN106731464 A CN 106731464A
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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
-
- 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
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
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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
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
- B01D2253/1124—Metal oxides
-
- 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
- B01D2253/25—Coated, impregnated or composite adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- 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
-
- 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 waste gas purification technical field, especially in a kind of mercurous, sulphur-containing exhaust gas mercury and sulphur removal methods, microwave radiation processing is used by manganese ore, so that the increased activity of the active component in manganese ore, during so that it is with containing sulfur dioxide, the exhaust gas contact of mercury composition, quickly sulphur composition and the solidification of mercury composition can be absorbed so that the removal efficiency of mercury composition and sulphur composition in waste gas is improved, mercury composition, the emission index of sulphur composition in waste gas are reduced, the value of environmental protection is improve.
Description
Technical field
The present invention relates to the removal methods of mercury and sulphur in waste gas purification technical field, especially a kind of mercurous, sulphur-containing exhaust gas.
Background technology
As the requirement of environmental protection standard is improved constantly, for containing for being produced during coal fired thermal power plant, hydro carbons working process
Sulfur dioxide, the waste gas of mercury composition are needed by that after tail gas clean-up treatment, can meet the standard of discharge；Tradition is for containing
Sulphur, the processing method of mercurous waste gas are concentrated mainly on：Lime cream absorption method, alkali absorption method.
Wherein lime cream absorption method is mainly using the direct sulfur dioxide absorption gas of milk of lime so that sulfur dioxide is in tail
Content in gas is reduced；Alkali absorption method is in scrubbing tower using compositions such as NaOH or sodium carbonate with sulfur dioxide
After carrying out washing absorption, then it is acted on milk of lime so that sulfur dioxide is absorbed.But, the above method can only
Enough sulfur dioxide component portion removings by waste gas, it is difficult to removed the mercury composition in waste gas, and by absorbing two
The by-product value that sulfur oxide is obtained is relatively low so that the absorption of the sulfur dioxide in waste gas is difficult to recycling.
Based on this, there is researcher that sulphur-containing exhaust gas are absorbed into manganese dioxide using manganese ore and prepare manganese sulfate product so that inhaling
While receiving sulfur dioxide, realize sulfur dioxide recycling, improve the added value to exhaust-gas treatment, reduce exhaust-gas treatment into
This, such as Patent No. ZL03135926.4.Even so, for sulfur-bearing, the treatment of mercurous waste gas, its not exclusively will to sulphur into
Divide and removed, and mercury is also necessary to be removed into source of heavy metal pollution is belonged to, and otherwise discharges in the environment
Afterwards, to environment serious deterioration can be caused, and lime cream absorption method of the prior art, alkali absorption method etc., reality is difficult at all
Removing treatment while now to the sulfur dioxide in waste gas, mercury, therefore, there is researcher using manganese ore in sulfur-bearing, mercurous waste gas
Sulphur, mercury carry out removing treatment, such as number of patent application is 201610149557.0, and it uses low-grade pyrolusite to mercurous sintering
Flue gas dry desulfurizing demercuration so that 71-79%, 57-67% are respectively reached to the sulphur in sulfur-bearing, mercurous waste gas, mercury removal rate；
Waste gas is directly discharged, it is seen then that although the processing method can to a certain extent remove mercury, sulphur composition in waste gas,
And reached discharge standard, but, its in discharge process, the still also sulphur containing part, mercury composition, and, for drop
Harmful components in low emptying tail gas, are the continuous directions pursued of those skilled in the art.And for above-mentioned emptying waste gas in,
It is still discharged containing more than 20% sulfur dioxide and more than 30% mercury composition, its pollution for still easily causing environment,
It is necessary to make the removal efficiency of the sulphur in waste gas, mercury composition further research, also just so, this researcher is by manganese
Ore deposit removing sulfur-bearing, the sulphur in mercury waste gas, the principle of mercury composition are analyzed, and pyrolusite are processed so that its desulfurization, de-
The performance of mercury is strengthened, for the removing of sulphur, mercury composition in sulfur-bearing, mercury composition waste gas provides a kind of new approaches.
The content of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention provides mercury in a kind of mercurous, sulphur-containing exhaust gas
With the removal methods of sulphur.
It is achieved particular by following technical scheme：
The removal methods of mercury and sulphur in a kind of mercurous, sulphur-containing exhaust gas, ore pulp is prepared into by pyrolusite and water, and ore pulp is used
Microwave radiation processing, then be spray-dried, 20-100 mesh sieves are crossed, obtain modified pyrolusite powder；By the filling of modified pyrolusite powder
Enter in fixed bed reactors, mercurous, sulphur-containing exhaust gas temperature are adjusted to 80-95 DEG C, enter by 10-15L/min of waste gas flow velocity
Enter fixed bed reactors, make waste gas and modified pyrolusite powder haptoreaction, complete mercury, the removing of sulphur in waste gas, and will removing mercury,
The waste gas of sulphur is excluded from the exhaust outlet of reactor.
Described waste gas flow velocity is 12-14L/min.
Described modified pyrolusite powder, the bed height in fixed bed reactors are packed into enables to waste gas and is modified
Pyrolusite time of contact is at least 5min.
The power of described microwave is 100-300W, and the time of microwave is 5-8min.
Described pyrolusite, when being that water is prepared into ore pulp, it will first be ground into 40-100 mesh；Again by its with water according to matter
Amount is than being 3-4:1.7-2.1 is well mixed.
Described fixed bed reactors are replaced using fluidized-bed reactor.
Described modified pyrolusite powder, during microwave radiation processing, the γ-Fe being added thereto to2O3Powder.
Described γ-Fe2O3Powder, addition is to account for pyrolusite quality 0.3-20.7%.
Described γ-Fe2O3Powder is 40-50 mesh.
Described method, also including will adopt and be soaked in water with the modified pyrolusite powder after waste gas reaction, filters；Filtrate is dense
Sheepshank is brilliant, obtains manganese sulfate；Filter residue is calcined, mercury treatment is reclaimed in condensation, calcining slag is returned and is mixed with ore pulp with pyrolusite.
And for above-mentioned technical proposal, the inventor of the invention has passed through substantial amounts of experimental study, flue gas below
In each composition detection detected using in-line analyzer, it is specific as follows：
Experiment row 1：
Pyrolusite 30g is ground into the powder of 40-100 mesh, is placed on and is packed into solid-bed reactor, dioxy will be contained
Change sulphur concentration is 985mg/m3, mercurous constituent concentration is 47 μm/m3Waste gas be passed through in solid-bed reactor, control flue gas stream
Speed is 10L/min, and adjustment flue-gas temperature is 80 DEG C.And using the sulfur dioxide concentration in flue gas analyzer detection exit flue gas
It is 286.1mg/m3, desulfurization degree is 70.95%, and the concentration of mercury composition is 23.1 μm/m3, demercuration rate is 50.85%.
Experiment row 2：
By pyrolusite 30g, the powder of 40-100 mesh is ground into, and used the microwave radiation processing 5min of 100W, mistake
20-100 mesh sieves, obtain modified pyrolusite powder, and the modified pyrolusite powder is packed into Solid Bed according to the method for experiment row 1 reacts
In device, sulfur dioxide concentration will be contained for 985mg/m3, mercurous constituent concentration is 47 μm/m3Waste gas be passed through in solid-bed reactor,
The flow velocity of flue gas is controlled for 10L/min, adjustment flue-gas temperature is 80 DEG C.And using in flue gas analyzer detection exit flue gas
Sulfur dioxide concentration is 135.6mg/m3, desulfurization degree is 86.23%, and the concentration of mercury composition is 15.7 μm/m3, demercuration rate is
66.59%.
Experiment row 3：
By pyrolusite 30g, the powder of 40-100 mesh is ground into, and is 3 according to mass ratio by miberal powder and water:2 are mixed with
Into after ore pulp, then the microwave radiation processing 8min of 300W is used, 20-100 mesh sieves are crossed in spray drying, obtain the soft manganese that is modified
Miberal powder, the modified pyrolusite powder is packed into solid-bed reactor according to the method for experiment row 1, and will contain sulfur dioxide concentration is
985mg/m3, mercurous constituent concentration is 47 μm/m3Waste gas be passed through in solid-bed reactor, control flue gas flow velocity be 15L/
Min, adjustment flue-gas temperature is 80 DEG C.And use flue gas analyzer detect exit flue gas in sulfur dioxide concentration for
91.7mg/m3, desulfurization degree is 90.69%, and the concentration of mercury composition is 13.26 μm/m3, demercuration rate is 71.78%.
Experiment row 4：
Other experiment conditions are controlled according to the condition of experiment row 2, and during microwave radiation processing, is added thereto to
γ-Fe2O3 powder, its addition is according to following adjustment, and its result correspondence is as shown in table 1 below：
Table 1
From table 1, for γ-Fe2O3The addition of powder, enables to manganese ore to take off SO 2 in waste gas composition
Except enhancing, and it is capable of a certain degree of removing for improving mercury composition, the sulphur composition and mercury composition effectively reduced in waste gas contain
Amount, the harmful components for causing to discharge in waste gas of maximum degree are reduced.
In addition, on the basis of row 4 are tested, this researcher is also by γ-Fe2O3The addition selection of powder is by manganese ore
Powder is prepared into after ore pulp with water, then using microwave radiation processing, and added during the radiation treatment, and be spray-dried again
Afterwards, the waste gas in Processing Example 3, it enables to SO 2 in waste gas removal efficiency to reach more than 95.3%, mercury composition
Removal efficiency reached more than 83.1%, effectively reduce mercury composition and sulphur composition in waste gas.
The invention uses microwave radiation processing by manganese ore so that the increased activity of the active component in manganese ore,
During so that it is with containing sulfur dioxide, the exhaust gas contact of mercury composition, quickly sulphur composition and the solidification of mercury composition can be absorbed, made
The removal efficiency for obtaining the mercury composition in waste gas and sulphur composition is improved, and reduces mercury composition, the emission index of sulphur composition in waste gas,
Improve the value of environmental protection.
Preferred process is to add γ-Fe wherein2O3Powder, and added by microwave process, enable to the powder
End and the effect of manganese ore composition so that manganese ore desulfurization, the performance of demercuration are further improved, and effectively reduce desulfurization, demercuration
During activation energy so that reaction is quick, improves to exhuast gas desulfurization efficiency.
Specific embodiment
Technical scheme is further limited with reference to specific embodiment, but claimed
Scope is not only limited to description.
Embodiment 1
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 40-50 mesh powder, and according to mass ratio be 3 with water:1.7 are prepared into ore deposit
Slurry；
(2) ore pulp is spray-dried using the microwave radiation processing 5min of 100W, crosses 20 mesh sieves, obtain modified pyrolusite
Powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 5min with modified pyrolusite powder time of contact, and EGT is 80-85 DEG C, and waste gas enters in fixed bed reactors
Flow velocity be 10-11L/min, by by the waste gas after the pyrolusite powder treatment that is modified directly by the floss hole of fixed bed reactors
Discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 2
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 50-60 mesh powder, and according to mass ratio be 4 with water:1.7 are prepared into ore deposit
Slurry；
(2) ore pulp is spray-dried using the microwave radiation processing 8min of 300W, crosses 40 mesh sieves, obtain modified pyrolusite
Powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 10min with modified pyrolusite powder time of contact, and EGT is 85-90 DEG C, and waste gas enters fixed bed reactors
In flow velocity be 11-12L/min, by through being modified pyrolusite powder treatment after waste gas directly by the discharge of fixed bed reactors
Mouth discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 3
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 60-70 mesh powder, and according to mass ratio be 10 with water:7 are prepared into ore deposit
Slurry；
(2) ore pulp is spray-dried using the microwave radiation processing 7min of 200W, crosses 60 mesh sieves, obtain modified pyrolusite
Powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 30min with modified pyrolusite powder time of contact, and EGT is 90-95 DEG C, and waste gas enters fixed bed reactors
In flow velocity be 13-14L/min, by through being modified pyrolusite powder treatment after waste gas directly by the discharge of fixed bed reactors
Mouth discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 4
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 70-90 mesh powder, and according to mass ratio be 4 with water:2.1 are prepared into ore deposit
Slurry；
(2) ore pulp is spray-dried using the microwave radiation processing 6min of 150W, crosses 60 mesh sieves, obtain modified pyrolusite
Powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 15min with modified pyrolusite powder time of contact, and EGT is 83-91 DEG C, and waste gas enters fixed bed reactors
In flow velocity be 14-15L/min, by through being modified pyrolusite powder treatment after waste gas directly by the discharge of fixed bed reactors
Mouth discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 5
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 40-90 mesh powder, and according to mass ratio be 3.5 with water:2 are prepared into ore deposit
Slurry；
(2) ore pulp is used the microwave radiation processing 7min of 250W, and in microwave processing process, is added thereto to account for soft
γ-Fe2O3 the powder of manganese ore quality 0.3%, after stirring, 40 mesh sieves are crossed in spray drying, obtain modified pyrolusite powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 12min with modified pyrolusite powder time of contact, and EGT is 81-90 DEG C, and waste gas enters fixed bed reactors
In flow velocity be 14-15L/min, by through being modified pyrolusite powder treatment after waste gas directly by the discharge of fixed bed reactors
Mouth discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 6
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 40-90 mesh powder, and according to mass ratio be 3.5 with water:2 are prepared into ore deposit
Slurry；
(2) ore pulp is used the microwave radiation processing 7min of 100W, and in microwave processing process, is added thereto to account for soft
γ-Fe2O3 the powder of manganese ore quality 20.7%, after stirring, 30 mesh sieves are crossed in spray drying, obtain modified pyrolusite powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 9min with modified pyrolusite powder time of contact, and EGT is 86-93 DEG C, and waste gas enters in fixed bed reactors
Flow velocity be 11-13L/min, by by the waste gas after the pyrolusite powder treatment that is modified directly by the floss hole of fixed bed reactors
Discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
Embodiment 7
The removal methods of mercury and sulphur, comprise the following steps in a kind of mercurous, sulphur-containing exhaust gas：
(1) pyrolusite is taken, pyrolusite powder is broken into 80-100 mesh powder, and according to mass ratio be 4 with water:1.7 are prepared into
Ore pulp；
(2) ore pulp is used the microwave radiation processing 5min of 270W, and in microwave processing process, is added thereto to account for soft
γ-the Fe of manganese ore quality 10%2O3Powder, after stirring, 30 mesh sieves are crossed in spray drying, obtain modified pyrolusite powder；
(3) modified pyrolusite powder is packed into fixed bed reactors, the height being filled in fixed bed reactors is caused
Waste gas is 11min with modified pyrolusite powder time of contact, and EGT is 88-95 DEG C, and waste gas enters fixed bed reactors
In flow velocity be 12-14L/min, by through being modified pyrolusite powder treatment after waste gas directly by the discharge of fixed bed reactors
Mouth discharge；The modified pyrolusite powder processed after waste gas is adopted into immersion treatment of blunging, is filtered, obtain manganese sulfate.
In addition to the above embodiments, for γ-Fe2O3Powder is preferably 40-50 mesh, under the granularity, can with it is soft
Manganese mineral powder is well mixed so as to the modified more excellent of pyrolusite powder, and the modified pyrolusite powder of enhancing is acted on sulfur dioxide, mercury composition
Intensity, strengthens removal efficiency.
The researcher of the invention obtained filter residue and was forged also by adopting immersion treatment of blunging, and after filtering
Burn after condensation reclaims mercury, then after the calcining slag is carried out being ground into 40-100 mesh, return is mixed with pyrolusite powder, and it can
So that adding γ-Fe follow-up2O3The significantly reduction of powder, and enable to the removing to the mercury in waste gas, sulphur composition
Efficiency is still higher, therefore, for reclaim manganese sulfate during, be filtrated to get cross filter residue by calcining condensation reclaim mercury after,
Can be used as in pyrolusite powder modifying process, substitute γ-Fe2O3The condition of powder, reduces the cost to exhaust-gas treatment.
In certain embodiments, substituted using fluidized-bed reactor for fixed bed reactors.
Claims (10)
1. in a kind of mercurous, sulphur-containing exhaust gas mercury and sulphur removal methods, it is characterised in that pyrolusite and water are prepared into ore pulp,
Ore pulp is used into microwave radiation processing, then is spray-dried, cross 20-100 mesh sieves, obtain modified pyrolusite powder；Will be modified soft
Manganese mineral powder is packed into fixed bed reactors, mercurous, sulphur-containing exhaust gas temperature is adjusted into 80-95 DEG C, with waste gas flow velocity as 10-
15L/min enters fixed bed reactors, makes waste gas and modified pyrolusite powder haptoreaction, completes mercury, the removing of sulphur in waste gas, and
Mercury will be removed, the waste gas of sulphur is excluded from the exhaust outlet of reactor.
2. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described waste gas
Flow velocity is 12-14L/min.
3. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described is modified
Pyrolusite powder, the bed height in fixed bed reactors are packed into enables to waste gas with modified pyrolusite time of contact at least
It is 5min.
4. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described microwave
The power of radiation is 100-300W, and the time of microwave is 5-8min.
5. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described soft manganese
Ore deposit, when being that water is prepared into ore pulp, it will first be ground into 40-100 mesh；With water it is again 3-4 according to mass ratio by it:1.7-2.1
It is well mixed.
6. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described fixation
Bed reactor is replaced using fluidized-bed reactor.
7. in the mercurous, sulphur-containing exhaust gas as described in claim 1 or 3 mercury and sulphur removal methods, it is characterised in that described changes
Property pyrolusite powder, during microwave radiation processing, the γ-Fe being added thereto to2O3Powder.
8. in mercurous, sulphur-containing exhaust gas as claimed in claim 7 mercury and sulphur removal methods, it is characterised in that described γ-
Fe2O3Powder, addition is to account for pyrolusite quality 0.3-20.7%.
9. in mercurous, sulphur-containing exhaust gas as claimed in claim 7 mercury and sulphur removal methods, it is characterised in that described γ-
Fe2O3Powder is 40-50 mesh.
10. in mercurous, sulphur-containing exhaust gas as claimed in claim 1 mercury and sulphur removal methods, it is characterised in that described side
Method, also including will adopt and be soaked in water with the modified pyrolusite powder after waste gas reaction, filters；By filtrate condensing crystallizing, manganese sulfate is obtained；
Filter residue is calcined, mercury treatment is reclaimed in condensation, calcining slag is returned and is mixed with ore pulp with pyrolusite.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039086A (en) * | 2009-10-22 | 2011-05-04 | 北京三聚环保新材料股份有限公司 | Medium temperature iron-manganese desulfurizing agent and preparation method thereof |
| 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 CN201611200083.4A patent/CN106731464A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039086A (en) * | 2009-10-22 | 2011-05-04 | 北京三聚环保新材料股份有限公司 | Medium temperature iron-manganese desulfurizing agent and preparation method thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 梅光贵，张文山，曾湘波等: "《中国锰业技术》", 31 July 2011 * |
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Application publication date: 20170531 |