CN106582494B - A kind of method that manganese aluminate prepares flue gas desulfurizing and hydrargyrum-removing agent for raw material - Google Patents
A kind of method that manganese aluminate prepares flue gas desulfurizing and hydrargyrum-removing agent for raw material Download PDFInfo
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- CN106582494B CN106582494B CN201611200905.9A CN201611200905A CN106582494B CN 106582494 B CN106582494 B CN 106582494B CN 201611200905 A CN201611200905 A CN 201611200905A CN 106582494 B CN106582494 B CN 106582494B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0207—Compounds of Sc, Y or Lanthanides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—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
- 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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- 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
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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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Abstract
The present invention relates to flue gas desulfurizing and hydrargyrum-removing technical field, especially a kind of manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, by the way that manganese aluminate and La are added in pyrolusite2O2CO3, so that the manganese dioxide in pyrolusite is adequately activated, improve the desulfuration demercuration efficiency of manganese base sulfur and mercury removing agent；In conjunction with urea phosphate, phosphoric acid addition and addition after treatment temperature so that pyrolusite and manganese aluminate and La2O2CO3Etc. being modified, it improves and the effect of sulfide, mercury simple substance, enhance the adsorption reaction to sulfide and Elemental Mercury in flue gas, improve reaction efficiency, reduce the content of the sulfide and Elemental Mercury in flue gas, removal efficiency is improved, so that reaching 90% or more to the removal efficiency of sulfide and mercury ingredient in flue gas.
Description
Technical field
The present invention relates to flue gas desulfurizing and hydrargyrum-removing technical field, especially a kind of manganese aluminate is that raw material prepares flue gas desulfurizing and hydrargyrum-removing
The method of agent.
Background technique
Coal is the main energy resources in China；The discharge that coal burns along with exhaust gas, and in coal, containing a large amount of
Sulfide and mercury, mercury has severe toxicity, readily volatilized, in coal combustion process, is volatized into environment, causes along with flue gas
The pollution of atmospheric environment；Moreover, mercury can also cause to seriously affect to organism, especially destroy the metabolism of biological cell
Function；Sulfide will be entered in environment in coal combustion process in the form of sulfur dioxide gas, cause to contain in air
A large amount of sulfur dioxide, with the landing of rainwater, sulfur dioxide, oxygen and water form acid rain, drop to earth's surface, cause earth's surface agriculture
The damages such as crop, vegetation, industrial factories and miness, bring the influence of high degree to production and living, therefore, for coal burning and exhausting
The desulfuration demercuration of flue gas is processed into for necessity.
Currently, the processing technique for flue gas desulfurizing and hydrargyrum-removing is more, but most of using individual desulfurization or de-
Mercury inorganic agent carries out substep desulfuration demercuration, and it is longer not only to cause the desulfuration demercuration period, but also desulfuration demercuration higher cost；It is based on
This, occurs the processing method by desulfuration demercuration while progress, and the selection to desulfuration demercuration raw material again in the prior art, makes
The cost for obtaining its desulfuration demercuration reduces, and if number of patent application is 201610149557, using low-grade pyrolusite as raw material, makes
During it react with smoke contacts, realize the removing to sulfur dioxide in flue gas and mercury, reduction flue gas emission process two
The content of sulfur oxide, mercury etc., reduces costs；But sulfur dioxide removal rate can only be increased to by the processing method
70% or so, the removal efficiency of mercury is increased to 64% or so, so that still containing a large amount of sulfide composition and mercury in flue gas
Ingredient, after draining into environment, serious self detergent power for exceeding environment still will cause the dirt of the high degree of environment
Dye.
Summary of the invention
In order to solve the above technical problems existing in the prior art, it is that raw material prepares cigarette that the present invention, which provides a kind of manganese aluminate,
The method of desulfurization mercury removal agent.
It is achieved particular by following technical scheme:
A kind of method that manganese aluminate prepares flue gas desulfurizing and hydrargyrum-removing agent for raw material, comprising the following steps:
(1) pyrolusite is prepared into powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30-60 DEG C in temperature, stirs evenly, be prepared into powder；
(3) powder of step (2) is added in the mud of step (1), is stirred evenly, and thereto be added urea phosphate and
Phosphoric acid, being placed in temperature is 100-130 DEG C of processing 10-20min, stirs evenly, is granulated, and crosses 20-60 mesh, then be placed in vacuum
Degree be 0.02-0.08MPa under be warming up to 80-120 DEG C of processing 0.5-1.3h to get.
The step (3), the mud mixing mass ratio of step (2) powder and step (1) are 0.3-1.1:8-15.
The step (3), the mud mixing mass ratio of step (2) powder and step (1) are 0.7:11.
The step (2), manganese aluminate and La2O2CO3Mass ratio be 3-5:0.7.
The step (3), urea phosphate additional amount account for the 1-3% of pyrolusite quality, and phosphoric acid additional amount accounts for pyrolusite quality
2-5%.
The pyrolusite is crossed by microwave radiation processing.
The microwave irradiation time is 20-30min, microwave irradiation power 80-100W.
It is that pyrolusite is warming up to 300-600 DEG C that the step (1), which is prepared into powder, by itself plus water, so that pyrolusite
Hydro-thermal reaction and dusting occur for surface.
Above-mentioned manganese aluminate is the flue gas desulfurizing and hydrargyrum-removing agent for the method preparation that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, compares table
Area is 110-270m2/g；Kong Rongwei 1.5-3.1cm3/g。
Above-mentioned manganese aluminate is the method flue gas desulfurizing and hydrargyrum-removing agent that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, de- for flue gas
When the processing of sulphur demercuration, it is to be filled in fixed bed reactors, flue gas is passed through in fixed bed reactors, it is de- with flue gas desulfurization
Mercurial contact is realized to flue gas desulfurizing and hydrargyrum-removing processing.
Compared with prior art, the technical effect of the invention is embodied in:
By the way that manganese aluminate and La are added in pyrolusite2O2CO3, so that the manganese dioxide in pyrolusite is adequately activated,
Improve the desulfuration demercuration efficiency of manganese base sulfur and mercury removing agent；In conjunction with urea phosphate, phosphoric acid addition and addition after treatment temperature, make
Obtain pyrolusite and manganese aluminate and La2O2CO3Etc. being modified, improve with the effect of sulfide, mercury simple substance, enhance to cigarette
The adsorption reaction of sulfide and Elemental Mercury in gas, improves reaction efficiency, reduces sulfide in flue gas and Elemental Mercury
Content improves removal efficiency, so that reaching 90% or more to the removal efficiency of sulfide and mercury ingredient in flue gas.
Specifically, the researcher of the invention, flue gas desulfurizing and hydrargyrum-removing agent prepared by embodiment 1-6 is according to side used below
Method is carried out using and the detection removed to sulphur, the mercury ingredient in flue gas is tested, as follows:
The flue gas that the experiment uses exactly is filled with sulfur dioxide and Elemental Mercury for nitrogen simulated flue gas in nitrogen, and
Nitrogen temperature is adjusted at 80-130 DEG C, simulated flue gas is obtained；
Taking diameter is 10mm, is highly the purification pipe of 20cm, the desulfuration demercuration that into purification pipe prepared by filling embodiment 1-6
Simulated flue gas is passed through by agent from the bottom of purification pipe, so that it after sulfur and mercury removing agent, is excluded from the top of purification pipe, and
To the content detection for entering sulfur dioxide and mercury in the simulated flue gas before purifying pipe, to the simulated flue gas ejected from purification pipe
In sulfur dioxide and mercury content detection, result is as shown in table 1 below:
By data in table show it can be seen from the invention sulfur and mercury removing agent can by flue gas sulfide and
The removal efficiency of Elemental Mercury reaches 90% or more, can effectively reduce the content of the sulfide and Elemental Mercury in flue gas, and adopts
It uses pyrolusite as primary raw material, is modified using other compositions, especially manganese aluminate and La2O2CO3It is added, so that soft manganese
Mine removes the increased activity of sulfide and Elemental Mercury, improves removal efficiency.
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 certain embodiments, manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is prepared into powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30-60 DEG C in temperature, stirs evenly, be prepared into powder；
(3) powder of step (2) is added in the mud of step (1), is stirred evenly, and thereto be added urea phosphate and
Phosphoric acid, being placed in temperature is 100-130 DEG C of processing 10-20min, stirs evenly, is granulated, and crosses 20-60 mesh, then be placed in vacuum
Degree be 0.02-0.08MPa under be warming up to 80-120 DEG C of processing 0.5-1.3h to get.
In certain embodiments, the step (3), step (2) powder and the mud mixing mass ratio of step (1) are
0.3-1.1:8-15。
In certain embodiments, the step (3), step (2) powder and the mud mixing mass ratio of step (1) are
0.7:11。
In certain embodiments, the step (2), manganese aluminate and La2O2CO3Mixing is according to any quality being not zero
Than mixing, preferably mass ratio is 3-5:0.7.
In certain embodiments, the step (3), urea phosphate additional amount account for the 1-3% of pyrolusite quality, and phosphoric acid is added
Amount accounts for the 2-5% of pyrolusite quality.
In certain embodiments, the pyrolusite is crossed by microwave radiation processing.
In certain embodiments, the microwave irradiation time is 20-30min, microwave irradiation power 80-100W.
In certain embodiments, it is that pyrolusite is warming up to 300-600 DEG C that the step (1), which is prepared into powder, by it
Add water, so that hydro-thermal reaction and dusting occur for pyrolusite surface.
Embodiment 1
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is prepared into powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30 DEG C in temperature, mass ratio 3:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 0.3:8 is stirred evenly, and
Urea phosphate is added thereto and phosphoric acid, urea phosphate additional amount account for the 1% of pyrolusite quality, phosphoric acid additional amount accounts for pyrolusite quality
2%, being placed in temperature is 100 DEG C of processing 10min, stirs evenly, is granulated, and crosses 20 meshes, then being placed in vacuum degree is 0.02MPa
Under be warming up to 80 DEG C of processing 0.5h to get.
Embodiment 2
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is prepared into powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 60 DEG C in temperature, mass ratio 5:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 1.1:15 is stirred evenly,
And addition urea phosphate and phosphoric acid, urea phosphate additional amount account for the 3% of pyrolusite quality thereto, phosphoric acid additional amount accounts for pyrolusite quality
5%, being placed in temperature is 130 DEG C of processing 20min, stirs evenly, is granulated, and 60 meshes of mistake then are placed in vacuum degree and are
Be warming up under 0.08MPa 120 DEG C of processing 1.3h to get.
Embodiment 3
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is passed through into microwave radiation processing, microwave irradiation time 20min, microwave irradiation power 80W, system
Standby Cheng Fenmo, adds water to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 40 DEG C in temperature, mass ratio 4:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 0.7:11 is stirred evenly,
And addition urea phosphate and phosphoric acid, urea phosphate additional amount account for the 2% of pyrolusite quality thereto, phosphoric acid additional amount accounts for pyrolusite quality
3%, being placed in temperature is 110 DEG C of processing 15min, stirs evenly, is granulated, and 50 meshes of mistake then are placed in vacuum degree and are
Be warming up under 0.06MPa 100 DEG C of processing 0.9h to get.
Embodiment 4
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is passed through into microwave radiation processing, microwave irradiation time 30min, microwave irradiation power 100W, system
Standby Cheng Fenmo, adds water to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 60 DEG C in temperature, mass ratio 3:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 1.1:8 is stirred evenly, and
Urea phosphate is added thereto and phosphoric acid, urea phosphate additional amount account for the 1% of pyrolusite quality, phosphoric acid additional amount accounts for pyrolusite quality
5%, being placed in temperature is 130 DEG C of processing 10min, stirs evenly, is granulated, and crosses 60 meshes, then being placed in vacuum degree is 0.02MPa
Under be warming up to 120 DEG C of processing 0.5h to get.
Embodiment 5
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is warming up to 300 DEG C, by itself plus water, so that hydro-thermal reaction occurs for pyrolusite surface and dusting, preparation
At powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30 DEG C in temperature, mass ratio 5:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 1.1:15 is stirred evenly,
And addition urea phosphate and phosphoric acid, urea phosphate additional amount account for the 2% of pyrolusite quality thereto, phosphoric acid additional amount accounts for pyrolusite quality
4%, being placed in temperature is 100 DEG C of processing 20min, stirs evenly, is granulated, and 20 meshes of mistake then are placed in vacuum degree and are
Be warming up under 0.08MPa 80 DEG C of processing 1.3h to get.
Embodiment 6
Manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, comprising the following steps:
(1) pyrolusite is passed through into microwave radiation processing, microwave irradiation time 25min, microwave irradiation power 90W rise
Temperature is to 500 DEG C, by itself plus water, so that hydro-thermal reaction occurs for pyrolusite surface and dusting, is prepared into powder, water is added to be prepared into mud
Slurry；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30 DEG C in temperature, mass ratio 3:0.7 is stirred evenly, is prepared into
Powder；
(3) powder of step (2) being added in the mud of step (1), mixing mass ratio 0.3:11 is stirred evenly,
And addition urea phosphate and phosphoric acid, urea phosphate additional amount account for the 1% of pyrolusite quality thereto, phosphoric acid additional amount accounts for pyrolusite quality
3%, being placed in temperature is 130 DEG C of processing 10min, stirs evenly, is granulated, and 60 meshes of mistake then are placed in vacuum degree and are
Be warming up under 0.02MPa 80 DEG C of processing 0.5h to get.
Above embodiments and test column are only limitted to make further explanation and explanation to the technical solution of the invention,
Understanding in order to those skilled in the art to the technical solution of the invention, those skilled in the art on this basis, do
The improvement of non-protruding essential characteristics and non-significant progress out, belongs to the protection scope of the invention.
Claims (10)
1. a kind of manganese aluminate is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which comprises the following steps:
(1) pyrolusite is prepared into powder, water is added to be prepared into mud；
(2) by manganese aluminate and La2O2CO3It is mixed at being 30-60 DEG C in temperature, stirs evenly, be prepared into powder；
(3) powder of step (2) is added in the mud of step (1), is stirred evenly, and urea phosphate and phosphorus are added thereto
Acid, being placed in temperature is 100-130 DEG C of processing 10-20min, stirs evenly, is granulated, and crosses 20-60 mesh, then be placed in vacuum degree
For be warming up under 0.02-0.08MPa 80-120 DEG C of processing 0.5-1.3h to get.
2. manganese aluminate as described in claim 1 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that step
(3) in, the mud mixing mass ratio in powder and step (1) in step (2) is 0.3-1.1:8-15.
3. manganese aluminate as claimed in claim 1 or 2 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that step
Suddenly in (3), the mud mixing mass ratio in powder and step (1) in step (2) is 0.7:11.
4. manganese aluminate as described in claim 1 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that step
(2) in, manganese aluminate and La2O2CO3Mass ratio be 3-5:0.7.
5. manganese aluminate as described in claim 1 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that step
(3) in, urea phosphate additional amount accounts for the 1-3% of pyrolusite quality, and phosphoric acid additional amount accounts for the 2-5% of pyrolusite quality.
6. manganese aluminate as described in claim 1 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that described
Pyrolusite is crossed by microwave radiation processing.
7. manganese aluminate as claimed in claim 6 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that described
Microwave irradiation time is 20-30min, microwave irradiation power 80-100W.
8. manganese aluminate as described in claim 1 is the method that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent, which is characterized in that step
(1) it is that pyrolusite is warming up to 300-600 DEG C that powder is prepared into, by itself plus water, so that hydro-thermal reaction occurs for pyrolusite surface
And dusting.
9. such as the flue gas that the described in any item manganese aluminates of claim 1-8 are the method preparation that raw material prepares flue gas desulfurizing and hydrargyrum-removing agent
Sulfur and mercury removing agent.
10. the flue gas desulfurizing and hydrargyrum-removing agent of the method according to claim 1 preparation, at flue gas desulfurizing and hydrargyrum-removing
When reason, it is to be filled in fixed bed reactors, flue gas is passed through in fixed bed reactors, is connect with flue gas desulfurizing and hydrargyrum-removing agent
Touching is realized to flue gas desulfurizing and hydrargyrum-removing processing.
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| CN201611200905.9A CN106582494B (en) | 2016-12-22 | 2016-12-22 | A kind of method that manganese aluminate prepares flue gas desulfurizing and hydrargyrum-removing agent for raw material |
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| CN201611200905.9A CN106582494B (en) | 2016-12-22 | 2016-12-22 | A kind of method that manganese aluminate prepares flue gas desulfurizing and hydrargyrum-removing agent for raw material |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422958A (en) * | 1981-03-13 | 1983-12-27 | Rhone-Poulenc Specialites Chimiques | Catalyst for desulfurization of industrial waste gases and process for preparing the catalyst |
| CN105316073A (en) * | 2015-11-27 | 2016-02-10 | 榆林学院 | Coal desulfurization experiment device and desulfurization method |
| 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 CN201611200905.9A patent/CN106582494B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422958A (en) * | 1981-03-13 | 1983-12-27 | Rhone-Poulenc Specialites Chimiques | Catalyst for desulfurization of industrial waste gases and process for preparing the catalyst |
| CN105316073A (en) * | 2015-11-27 | 2016-02-10 | 榆林学院 | Coal desulfurization experiment device and desulfurization method |
| 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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