CN106179278A - The preparation method of a kind of sulfur functionalization magnetic adsorbent and product - Google Patents

The preparation method of a kind of sulfur functionalization magnetic adsorbent and product Download PDF

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CN106179278A
CN106179278A CN201610637474.6A CN201610637474A CN106179278A CN 106179278 A CN106179278 A CN 106179278A CN 201610637474 A CN201610637474 A CN 201610637474A CN 106179278 A CN106179278 A CN 106179278A
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sulfur
magnetic bead
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CN106179278B (en
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赵永椿
杨建平
张军营
郑楚光
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Huazhong University of Science and Technology
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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
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28009—Magnetic properties
    • 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
    • B01D53/52—Hydrogen sulfide
    • B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
    • 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
    • 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
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42—Materials comprising a mixture of inorganic materials
    • 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
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character

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  • Treating Waste Gases (AREA)
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Abstract

The invention discloses the preparation method of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury, it comprises the following steps: use magnetic separator choose magnetic bead particles from flying dust and grind；Described magnetic bead particles is placed in described reaction vessel, will be enriched in H2S and SO2Industrial waste gas be uniformly passed through in described reaction vessel, maintain temperature be 40 200 DEG C, make H2S and SO2React with the irony component in magnetic bead particles and be converted into elemental sulfur and be supported on magnetic bead surfaces；When reaction vessel exit gas concentration and inlet gas concentration reach balance, i.e. obtain described sulfur functionalization magnetic adsorbent.The load of element sulphur is more uniformly and preparation process is simple compared with solution impregnation method for the method for the present invention, in addition, this magnetic absorption agent carrier derives from solid waste flying dust, modifier source, in industrial waste gas, can realize again the recycling of trade waste while adsorbent preparation cost is greatly reduced.

Description

The preparation method of a kind of sulfur functionalization magnetic adsorbent and product
Technical field
The invention belongs to Mercury In Coal Combustion Flue Gas removing sulfuldioxide field, be specifically related to a kind of for removing coal-fired flue-gas Elemental Mercury The preparation method of sulfur functionalization magnetic adsorbent and product.
Background technology
Hydrargyrum is a kind of neurotoxic substance, has extremely strong cumulative bad and irreversibility, threatens the biggest to human health.Coal-fired electricity Factory is one of topmost artificial mercury pollution source.In order to protect environment, it is achieved sustainable development, China environmental protection portion in 2011 Promulgate up-to-date " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011), from 1 day January in 2015, it is desirable to combustion Mercury and mercuric compounds discharge capacity is controlled at 0.03mg/m by coal burning boiler3Below.Research and develop efficient, economic coal-burning power plant's demercuration skill Art, can not only conscientiously reduce mercury contaminants to ecological environment and the harm of human health, and can effectively alleviate China and fulfil hydrargyrum Reduce discharging the pressure of international convention.
At present, the research of domestic and international mercury control technology is concentrated mainly on three aspects: de-in demercuration, burning before burning Flue gas demercuration after hydrargyrum and burning, wherein the most extensive with the research of demercuration technology after burning.Activated carbon spraying technique is by public in the world It is considered maximally efficient coal-fired flue-gas hydrargyrum release control technology, but, activated carbon spraying technique operating cost is the highest, and charcoal Spraying technique can cause carbon content in ash to increase, and affects its commercial applications.Utilize the hydrargyrum in efficient absorption material removal flue gas Being the most promising current technology, in order to preferably improve removal effect, the research for demercuration adsorbing material is concentrated mainly on Change raw material, use the aspects such as different activation methods, different modifying agent and method of modifying.
Although existing all kinds of demercuration technology can effectively remove mercury in flue gas, or is transferred in coal washing liquid by hydrargyrum in coal, or Mercury in flue gas is effectively transferred in flying dust, adsorbent and desulfuration byproduct, effectively reduces the Mercury In The Air discharge capacity of coal combustion, But, flyash, desulfurated plaster etc. are all the raw materials for production that other industry is important, and heavy metal Hg enrichment thereon is undoubtedly by hydrargyrum Pollution transfer to other industrial processes, the most real thorough improvement realizing coal-fired mercury pollution.Activated carbons etc. adsorb The secondary being also faced with hydrargyrum after agent demercuration discharges the problems such as pollution.The magnetic adsorbent easily reclaimed is used to reduce the same of operating cost Time also can realize the centralized Control of hydrargyrum, it is to avoid secondary pollution problem.Canada University of Alberta Edmonton Dong et al. the magnetic adsorbent that uses natural zeolite as carrier synthesis Ag nano-particle load is proposed, it is thus achieved that preferably Demercuration performance and regeneration cycle performance.Yan Naiqiang seminar of Shanghai Communications University has done greatly in terms of the research of magnetic mercury absorbent Amount work, develops different magnetic iron-based spinelle base adsorbents.But in general, the magnetic adsorbent of report closes at present One-tenth process is complex, relatively costly, and suitable environment condition is harsh, only exists in the experimental stage at present.
In flying dust, magnetic bead is solid waste of fuel coal, has and the Fe of laboratory synthesis3O4The magnetic spy that magnetic-particle is similar Property, it is a kind of preferably magnetic carrier.After being modified processing to it, then can obtain the magnetic absorption with high-efficiency mercury removal performance Agent.Owing to sulfur has close hydrargyrum, thus it it is the conventional demercuration adsorbent method of modifying of a class.At present, domestic and international existing demercuration is inhaled Sulfur is loaded to immunosorbent support surface, main purpose by the method that attached dose of preparation and method of modifying use sulphur-containing solution to impregnate mostly It is to increase adsorbent surface functional group and active substance increases its chemical adsorption capacity, to improve its demercuration efficiency.But the party During method carries sulfur, element sulphur thermoprecipitation easily blocks adsorbent pores gap structure, causes absorption property to decline.Additionally, employing solution It is uneven in carrier surface load that the method for dipping normally results in element sulphur, it is impossible to ensures the high-efficiency mercury removal performance of adsorbent.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides a kind of for removing coal-fired flue-gas simple substance The preparation method of the sulfur functionalization magnetic adsorbent of hydrargyrum, it uses rich in H2S and SO2Industrial waste gas and magnetic bead in irony group Point react and to be converted into elemental sulfur and be supported on magnetic bead surfaces, i.e. adsorbent is modified, it is thus achieved that there is high-efficiency mercury removal performance Magnetic adsorbent.The load of element sulphur is more uniformly and preparation process is simple, significantly compared with solution impregnation method for the method Improve the removal efficiency of simple substance tribute in flue gas.Additionally, this magnetic absorption agent carrier derives from solid waste of fuel coal flying dust, change Property agent derives from industrial waste gas, compared with existing commercial activated carbons demercuration adsorbent, adsorbent preparation cost is being greatly reduced The recycling of trade waste can be realized again simultaneously.
For achieving the above object, the present invention provides a kind of sulfur functionalization magnetic absorption for removing coal-fired flue-gas Elemental Mercury The preparation method of agent, it comprises the following steps:
(1) use magnetic separator to choose magnetic bead particles from coal-burning power plant's solid waste coal ash, and grind screening magnetic bead；
(2) described magnetic bead particles is placed in described reaction vessel, will be enriched in H2S and SO2Industrial waste gas be uniformly passed through institute State in reaction vessel, between maintaining the temperature in reaction vessel to be 40-200 DEG C, make H2S and SO2With the irony group in magnetic bead particles Point react and to be converted into elemental sulfur and be supported on magnetic bead surfaces；
(3) equal when the gas concentration of gas concentration monitoring instrument monitoring reaction vessel import and export, i.e. reaction vessel outlet When gas concentration and inlet gas concentration reach balance, sulfidation completes, and i.e. obtains described sulfur functionalization magnetic adsorbent.
By such scheme, the present invention uses rich in H2S and SO2Industrial waste gas and magnetic bead in irony component occur anti- Elemental sulfur should be converted into and be supported on magnetic bead surfaces, it is thus achieved that there is the magnetic adsorbent of high-efficiency mercury removal performance.The method is soaked with solution Stain method compares the load of element sulphur, and more uniformly and preparation process is simple.Additionally, this magnetic absorption agent carrier derives from fire coal Solid waste flying dust, modifier source, in industrial waste gas, compared with existing commercial activated carbons demercuration adsorbent, is being greatly reduced The recycling of trade waste can be realized again while adsorbent preparation cost.
As present invention further optimization, described magnetic bead particles size is 100-400 mesh, preferably 200 mesh.
As present invention further optimization, the temperature in described reaction vessel maintains 100-150 DEG C, and preferably 150 ℃。
As present invention further optimization, in described industrial waste gas, H2The concentration of S is 5-20ppm, SO2Concentration be 400-1200ppm。
As present invention further optimization, described industrial waste gas charge flow rate is determined by reactor reduced superficial velocity GHSV, I.e. according to the stacking volume V of magnetic bead in reaction vesselMagnetic beadDetermine gas inlet flow QGas。
As present invention further optimization, described reactor reduced superficial velocity GHSV computational methods are:
GHSVH2S/SO2=QH2S/SO2/VMagnetic bead
Wherein, QH2S/SO2For required sulfur component H2S and SO2Total charge flow rate.
As present invention further optimization, the charge flow rate Q of described gasGasCalculated by following formula:
QGas=QH2S/SO2/ C=(GHSVH2S/SO2×VMagnetic bead)/C
Wherein, sulfur-bearing composition H during C is gas2S and SO2Total concentration；GHSVH2S/SO2For 3000-8000h-1。
In general, by the contemplated above technical scheme of the present invention compared with prior art, owing to providing one For removing the preparation method of the sulfur functionalization magnetic adsorbent of coal-fired flue-gas Elemental Mercury, it is possible to obtain following beneficial effect:
(1) present invention uses rich in H2S and SO2Industrial waste gas and magnetic bead in irony component react and be converted into list Matter sulfur is supported on magnetic bead surfaces, it is thus achieved that having the magnetic adsorbent of high-efficiency mercury removal performance, the method is compared with solution impregnation method The load of element sulphur is more uniformly and preparation process is simple.
(2), in technical solution of the present invention, use rich in H2S and SO2Industrial waste gas adsorbent is modified, magnetic inhale Attached agent carrier derives from solid waste of fuel coal flying dust, and modifier source, in industrial waste gas, is inhaled with existing commercial activated carbons demercuration Compare for attached dose, while adsorbent preparation cost is greatly reduced, the recycling of trade waste can be realized again.
(3), in technical solution of the present invention, use rich in H2S and SO2Industrial waste gas adsorbent is modified, it is thus achieved that tool Having the magnetic adsorbent of high-efficiency mercury removal performance, the load of its element sulphur is more uniform, substantially increases the de-of simple substance tribute in flue gas Except efficiency.
Accompanying drawing explanation
Fig. 1 is the system of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the embodiment of the present invention The device schematic diagram related in Preparation Method；
Fig. 2 is the system of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the embodiment of the present invention Magnetic adsorbent prepared by Preparation Method and the commercial activated carbons removal efficiency relative analysis figure to simple substance tribute in flue gas.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not For limiting the present invention.As long as additionally, technical characteristic involved in each embodiment of invention described below that The conflict of not constituting between this just can be mutually combined.
Fig. 1 is the system of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the embodiment of the present invention The device schematic diagram related in Preparation Method.As it is shown in figure 1, this device includes that reaction vessel 1, gas flow controller 2, gas are dense Degree detector 3, magnetic bead 4 and aerator 5.
Embodiment 1
A kind of preparation method of the sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the present embodiment, logical Cross said apparatus to carry out, specifically comprising the following steps that of the method
(1) using magnetic separator to be separated from flying dust by magnetic bead, the polished standard screen with 200 mesh selects suitable grain The magnetic bead particles in footpath is as carrier；
(2) magnetic bead particles that grinding filters out is placed in reaction vessel 1；
(3) aerator 5, gas flow controller 2 are opened, will be containing H2S and SO2Simulation industrial waste gas be uniformly passed through instead Answering in container 1, gas component is 20ppmH2S、400ppmSO2、N2(Balance Air)；
(3) maintaining the temperature in reaction vessel 1 is 100 DEG C；
(4) according to the stacking volume V of magnetic bead in reaction vessel 1Magnetic bead, determine that gas inlet flow is 1L/min；
(5) open reaction vessel import and export gas concentration monitoring instrument 3, monitor H2S and SO2Concentration；
(6), after processing 2h, reaction vessel 1 exit gas concentration and import reach balance, the most i.e. think that sulfidation is complete Become, i.e. obtain described sulfur functionalization magnetic adsorbent.
(7) magnetic adsorbent of above-mentioned preparation being carried out combustion product gases demercuration performance evaluation, experiment condition is as follows:
Flue gas composition is 4%O2, 12%CO2, 10ppmHCl, 800ppmSO2, 100ppmNO, 50ug/m3Hg0, 5%H2O, Balance Air is N2, this flue gas composition is typical case's coal-burning boiler tail flue gas concentration of component；
Reaction temperature is 140 DEG C, for flue-gas temperature before electrostatic precipitator or sack cleaner；
As shown in Figure 2, experimental result shows that this adsorbent reaches 85.2% to the removal efficiency of Elemental Mercury, with commercial activated The demercuration performance of charcoal is suitable.
Embodiment 2
One of the preparation method of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the present invention Embodiment, is carried out by said apparatus, specifically comprising the following steps that of the method
(1) using magnetic separator to be separated from flying dust by magnetic bead, the polished standard screen with 200 mesh selects suitable grain The magnetic bead particles in footpath is as carrier；
(2) magnetic bead particles that grinding filters out is placed in reaction vessel 1；
(3) aerator 5, gas flow controller 2 are opened, will be containing H2S and SO2Simulation industrial waste gas be uniformly passed through instead Answering in container 1, gas component is 10ppmH2S、800ppmSO2、N2(Balance Air)；
(3) maintaining the temperature in reaction vessel 1 is 150 DEG C；
(4) according to the stacking volume V of magnetic bead in reaction vessel 1Magnetic bead, determine that gas inlet flow is 0.7L/min；
(5) open reaction vessel import and export gas concentration monitoring instrument 3, monitor H2S and SO2Concentration；
(6), after processing 1h, reaction vessel 1 exit gas concentration and import reach balance, the most i.e. think that sulfidation is complete Become, i.e. obtain described sulfur functionalization magnetic adsorbent.
(7) magnetic adsorbent of above-mentioned preparation being carried out combustion product gases demercuration performance evaluation, experiment condition is as follows:
Flue gas composition is 4%O2, 12%CO2, 10ppmHCl, 800ppmSO2, 100ppmNO, 50ug/m3Hg0, 5%H2O, Balance Air is N2, this flue gas composition is typical case's coal-burning boiler tail flue gas concentration of component；
Reaction temperature is 140 DEG C, for flue-gas temperature before electrostatic precipitator or sack cleaner；
As shown in Figure 2, experimental result shows that this adsorbent reaches 96.4% to the removal efficiency of Elemental Mercury, is better than business and lives The demercuration performance of property charcoal.
Embodiment 3
One of the preparation method of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury of the present invention Embodiment, is carried out by said apparatus, specifically comprising the following steps that of the method
(1) using magnetic separator to be separated from flying dust by magnetic bead, the polished standard screen with 200 mesh selects suitable grain The magnetic bead particles in footpath is as carrier；
(2) magnetic bead particles that grinding filters out is placed in reaction vessel 1；
(3) aerator 5, gas flow controller 2 are opened, will be containing H2S and SO2Simulation industrial waste gas be uniformly passed through instead Answering in container 1, gas component is 5ppmH2S、800ppmSO2、N2(Balance Air)；
(3) maintaining the temperature in reaction vessel 1 is 120 DEG C；
(4) according to the stacking volume V of magnetic bead in reaction vessel 1Magnetic bead, determine that gas inlet flow is 0.7L/min；
(5) open reaction vessel import and export gas concentration monitoring instrument 3, monitor H2S and SO2Concentration；
(6) processing after 1.2h, reaction vessel 1 exit gas concentration and import reach balance, the most i.e. think sulfidation Complete, i.e. obtain described sulfur functionalization magnetic adsorbent.
(7) magnetic adsorbent of above-mentioned preparation being carried out combustion product gases demercuration performance evaluation, experiment condition is as follows:
Flue gas composition is 4%O2, 12%CO2, 10ppmHCl, 800ppmSO2, 100ppmNO, 50ug/m3Hg0, 5%H2O, Balance Air is N2, this flue gas composition is typical case's coal-burning boiler tail flue gas concentration of component；
Reaction temperature is 140 DEG C, for flue-gas temperature before electrostatic precipitator or sack cleaner；
As shown in Figure 2, experimental result shows that this adsorbent reaches 87.3% to the removal efficiency of Elemental Mercury, is better than business and lives The demercuration performance of property charcoal.
In technical scheme, embodiment gives H in industrial waste gas2The content of S, SO2Content and reaction Temperature effect in container is preferably worth, but is not limited to the value in above-described embodiment, wherein, H in the present invention2The content of S is 5-20ppm, can be with 20ppm, the 10ppm in Example, it is also possible to take 5ppm, 6ppm, 7ppm, 8ppm, 9ppm, 11ppm, 12ppm, 13ppm, 14ppm, 15ppm, 16ppm, 17ppm, 18ppm, 19ppm etc.；SO2Content be 400-1200ppm, permissible 400ppm, 800ppm in Example, it is also possible to take 500ppm, 600ppm, 700ppm, 900ppm, 1000ppm, 1100ppm, 1200ppm etc., and, H2S and SO2Proportioning can also the most arbitrarily arrange in pairs or groups, however it is not limited on State the proportion relation provided in embodiment, concrete H2S and SO2Content and proportioning can be according to the concrete feelings of actual industrial waste gas Condition is determined.
It addition, the temperature in reaction vessel is also not necessarily limited to the value in above-described embodiment, typically can be 40-200 DEG C, preferably For 100-150 DEG C, can with 100 DEG C in Example, 120 DEG C, 150 DEG C, it is also possible to take 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 110 DEG C, 130 DEG C, 140 DEG C, 160 DEG C, 170 DEG C, 180 DEG C, 190 DEG C, 200 DEG C etc..
Additionally, the value being also not necessarily limited in above-described embodiment about the size of magnetic bead particles, response time in the present invention, such as The size of magnetic bead particles is 100-400 mesh, preferably 200 mesh, can be with 200 mesh in Example, it is also possible to take 100,150, 250,300,400 etc.；Response time is 1-2 hour, can with 1 in Example, 1.2,2 hours, it is also possible to take 1.5,1.8 little Time etc..
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise Within protection scope of the present invention.

Claims (8)

1., for removing a preparation method for the sulfur functionalization magnetic adsorbent of coal-fired flue-gas Elemental Mercury, it includes following step Rapid:
(1) use magnetic separator to choose magnetic bead particles from coal-burning power plant's solid waste coal ash, and grind screening magnetic bead；
(2) magnetic bead particles filtered out is placed in reaction vessel, will be enriched in H2S and SO2Industrial waste gas be uniformly passed through described instead Answer in container, between maintaining the temperature in reaction vessel to be 40-200 DEG C, make H2S and SO2Send out with the irony component in magnetic bead particles Raw reaction is converted into elemental sulfur and is supported on magnetic bead surfaces；
(3) when the gas concentration of reaction vessel import and export is equal, i.e. reaction vessel exit gas concentration is dense with inlet gas When degree reaches balance, sulfidation completes, and i.e. obtains described sulfur functionalization magnetic adsorbent.
The preparation of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury the most according to claim 1 Method, wherein, described magnetic bead particles size is 100-400 mesh.
A kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury the most according to claim 1 and 2 Preparation method, wherein, the temperature in described reaction vessel maintains 100-150 DEG C.
4. inhale according to a kind of sulfur functionalization magnetic for removing coal-fired flue-gas Elemental Mercury according to any one of claim 1-3 The preparation method of attached dose, wherein, in described industrial waste gas, H2The concentration of S is 5-20ppm, SO2Concentration be 400-1200ppm.
5. inhale according to a kind of sulfur functionalization magnetic for removing coal-fired flue-gas Elemental Mercury according to any one of claim 1-4 The preparation method of attached dose, wherein, described industrial waste gas charge flow rate is determined by reactor reduced superficial velocity GHSV, i.e. holds according to reaction The stacking volume V of magnetic bead in deviceMagnetic beadDetermine gas inlet flow QGas。
The preparation of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury the most according to claim 5 Method, wherein, described reactor reduced superficial velocity GHSV computational methods are:
GHSVH2S/SO2=QH2S/SO2/VMagnetic bead
Wherein, QH2S/SO2For required sulfur component H2S and SO2Total charge flow rate.
The preparation of a kind of sulfur functionalization magnetic adsorbent for removing coal-fired flue-gas Elemental Mercury the most according to claim 6 Method, wherein, the charge flow rate Q of described gasGasCalculated by following formula:
QGas=QH2S/SO2/ C=(GHSVH2S/SO2×VMagnetic bead)/C
Wherein, sulfur-bearing composition H during C is gas2S and SO2Total concentration；GHSVH2S/SO2For 3000-8000h-1。
8. utilize a kind of sulfur functionalization magnetic for removing coal-fired flue-gas Elemental Mercury according to any one of claim 1-7 to inhale The sulfur functionalization magnetic adsorbent that the preparation method of attached dose prepares.
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CN113797898A (en) * 2021-10-18 2021-12-17 青岛理工大学 Preparation method and application of magnetic adsorbent for efficiently removing elemental mercury and hydrogen sulfide

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