CN102008891A - Preparation process of sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane - Google Patents
Preparation process of sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane Download PDFInfo
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- CN102008891A CN102008891A CN 201010290161 CN201010290161A CN102008891A CN 102008891 A CN102008891 A CN 102008891A CN 201010290161 CN201010290161 CN 201010290161 CN 201010290161 A CN201010290161 A CN 201010290161A CN 102008891 A CN102008891 A CN 102008891A
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- desulfurizing agent
- tio
- filter membrane
- znfe2o4
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Abstract
The invention provides a preparation process of a sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane, which is characterized by comprising the following steps of: (1) preparing nanometer ZnFe2O4-TiO2 desulfurizing agent powder by using a template agent-hydrothermal method; and (2) taking magnesium oxide and magnesium chloride as raw materials, taking nanometer rice hull ash and nylon net as reinforcing agents, taking a small quantity of ferrovanadium, phosphoric acid, sodium lignosulfonate and styrene-acrylic emulsion as composite water repellent agents, taking expanded polystyrene particles as pore-forming agents, preparing a magnesium oxychloride support body by using a gel casting method, then evenly scattering the nanometer ZnFe2O4-TiO2 desulfurizing agent powder on the magnesium oxychloride support body to form a desulfurizing agent layer with a thickness of about 1mm, curing at the room temperature for 3d, and placing in a drying oven with a temperature of 110DEG C for 2h to obtain the sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane. The sintering-free process of the invention ensures that the preparation cost is greatly lowered and the energy is saved because a sintering process is not needed, and the nanometer ZnFe2O4-TiO2 desulfurizing agent prepared by the template agent-hydrothermal method has a specific surface area as high as 246m2/g, has high desulfurizing and denitrating activity, and can be used for the purification of air, flue gas and waste gas.
Description
Technical field
The invention provides a kind of unburned nanometer Zn Fe
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane belongs to technical field of inorganic material.
Background technology
The harm of sulfur dioxide and nitrogen oxide has been well-known in the coal-fired flue-gas, exploitation desulfurization simultaneously (SO
2), denitration (NO
x) new technology, new equipment be extremely urgent.SO wherein
2Control method technology such as wet type limestone-gypsum method, recirculating fluidized bed method, sea water desulfuration are arranged.For nitrogen oxide NO
xControl, generally be to install cover denitrification apparatus such as a SCR or a SNCR mode additional in the desulfurizer back, based on SCR, thereby realize combined desulfurization, denitrogenation.This is the classification administration way.This mode not only floor space is big, and investment and operating cost height, is difficult to large tracts of land and uses.
Titanium dioxide is a kind of important conductor photocatalysis material, and it has advantages such as nontoxic, cheap, that reaction condition is gentle, chemical property is stable.Utilize TiO
2Photocatalysis removes sulfur dioxide in flue gas and effectively controls SO
2And NO
xDischarging be research focus in the present Air Pollution Control field, obtaining remarkable achievement aspect some basic research and the application study, this technology can make and much be difficult to biodegradable material and degrade fully, demonstrate good prospects for application, be expected to develop into practical industrialized environment improvement technology.
Summary of the invention
The purpose of this invention is to provide a kind of unburned nanometer Zn Fe for flue gas and coal gas desulfurization denitration
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane.Its technology contents is:
A kind of unburned nanometer Zn Fe
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane is characterized in that adopting following steps: (1) adopts template-hydro-thermal method to prepare nanometer Zn Fe
2O
4-TiO
2Desulfurizer powder; (2) take magnesia and magnesium chloride as raw material, take nanometer rice hull ash and nylon wire as reinforcing agent, take a small amount of siderotil, phosphoric acid, wooden sodium sulfonate and benzene emulsion as compound water repellent agent, take expanded polystyrene particle as pore former, adopt and annotate the standby chlorine oxygen magnesium supporter of solidification forming legal system, then with homodisperse nanometer Zn Fe
2O
4-TiO
2Desulfurizer powder all is sprinkling upon and forms the desulfurizing agent thin layer that thickness is about 1mm on the chlorine oxygen magnesium supporter, this desulfurizing agent thin layer can very fast absorption supporter in moisture, and combine together with supporter, at room temperature solidify dry 2h in the drying box that 3d is placed on 110 ℃, expanded polystyrene particle just is melted and stays hole, namely gets unburned porous nano ZnFe
2O
4-TiO
2The desulfurizing agent filter membrane.
Described unburned nanometer Zn Fe
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane, in the step (1), the hydrolytic sol of butyl titanate, zinc nitrate and ferric nitrate is placed reactor, above-mentioned three's mol ratio is 1: 1: 98, and adding polyoxyethylene-poly-oxypropylene polyoxyethylene is that P123 is template again, and the mol ratio of P123 and titanium is 0.03: 100, the control hydrothermal temperature is 160 ℃, reaction time is 15h, is cooled to room temperature, and obtaining average grain diameter behind the washing and drying is that 18nm, specific area are 246m
2The ZnFe of/g
2O
4-TiO
2Desulfurizer powder.
Described unburned nanometer Zn Fe
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane, in the step (2), in the Binder Materials slurry of magnesia and magnesium chloride brine composition, the addition of nanometer rice hull ash is 15～25% of magnesia quality, compound water repellent agent addition is 2.5～7.5% of magnesia quality, it forms mass ratio is siderotil: phosphoric acid: wooden sodium sulfonate: benzene emulsion=1: 1: 1: 1, the addition of expanded polystyrene particle and the volume ratio of magnesium chloride solution are 1.5～2.5: 3, after mixing, above-mentioned substance obtains chlorine oxygen magnesium supporter slip, at first lay one deck slip at plastic sheeting, lay one deck nylon wire at slip then, lay one deck slip at nylon wire again, evenly sprinkle the nanometer Zn Fe that thick layer is 1mm at last
2O
4-TiO
2Desulfurizer powder solidifies and to take dry 2h in the drying box that plastic sheeting is placed on 110 ℃ behind the 3d off, namely gets unburned porous nano ZnFe
2O
4-TiO
2The desulfurizing agent filter membrane.
The present invention compared with prior art, its advantage is:
1, adopt the nano-desulfurizer powder of template-hydro-thermal method preparation, granularity is little, and specific area is big, in conjunction with ZnFe
2O
4Doping, can make TiO
2The desulphurization denitration rate can reach more than 98%;
2, adopting the gelling of chlorine oxygen magnesium is MgO-MgCl
2-H
2O at room temperature is solidified into the porous desulfurizing agent film that can satisfy the flue gas desulfurization and denitrification needs as curing agent, has avoided high temperature sintering, greatly reduces preparation cost, has saved the energy.
The specific embodiment
Embodiment one:
1, nanometer Zn Fe
2O
4-TiO
2The preparation of desulfurizer powder: the hydrolytic sol of butyl titanate, zinc nitrate and ferric nitrate is placed reactor, above-mentioned three's mol ratio is 1: 1: 98, adding polyoxyethylene-poly-oxypropylene polyoxyethylene is that P123 is template again, the mol ratio of P123 and titanium is 0.03: 100, the control hydrothermal temperature is 160 ℃, reaction time is 15h, is cooled to room temperature, and obtaining average grain diameter behind the washing and drying is that 18nm, specific area are 246m
2The ZnFe of/g
2O
4-TiO
2Desulfurizer powder.
2, porous nano ZnFe
2O
4-TiO
2The preparation of desulfurizing agent filter membrane: in the Binder Materials slurry of magnesia and magnesium chloride brine composition, the addition of nanometer rice hull ash is 25% of magnesia quality, compound water repellent agent addition is 2.5% of magnesia quality, it forms mass ratio is siderotil: phosphoric acid: wooden sodium sulfonate: benzene emulsion=1: 1: 1: 1, the addition of expanded polystyrene particle and the volume ratio of magnesium chloride solution are 1.5: 3, after mixing, above-mentioned substance obtains chlorine oxygen magnesium supporter slip, lay one deck nylon wire at slip then, lay one deck slip at nylon wire again, evenly sprinkle the nanometer Zn Fe that thick layer is 1mm at last
2O
4-TiO
2Desulfurizer powder solidifies and to take dry 2h in the drying box that plastic sheeting is placed on 110 ℃ behind the 3d off, namely gets unburned porous nano ZnFe
2O
4-TiO
2The desulfurizing agent filter membrane
Embodiment two:
Step 1 is with embodiment one, just step 2 is different: in step 2, the addition of nanometer rice hull ash is 15% of a magnesia quality, compound water repellent agent addition is 7.5% of a magnesia quality, the addition of expanded polystyrene particle and the volume ratio of magnesium chloride solution are 2.5: 3, and other is constant.
Claims (3)
1. unburned nanometer Zn Fe
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane is characterized in that adopting following steps: (1) adopts template-hydro-thermal method to prepare nanometer Zn Fe
2O
4-TiO
2Desulfurizer powder; (2) take magnesia and magnesium chloride as raw material, take nanometer rice hull ash and nylon wire as reinforcing agent, take a small amount of siderotil, phosphoric acid, wooden sodium sulfonate and benzene emulsion as compound water repellent agent, take expanded polystyrene particle as pore former, adopt and annotate the standby chlorine oxygen magnesium supporter of solidification forming legal system, then with nanometer Zn Fe
2O
4-TiO
2Desulfurizer powder all is sprinkling upon on the chlorine oxygen magnesium supporter and forms the desulfurizing agent thin layer that thickness is about 1mm, at room temperature solidifies dry 2h in the drying box that 3d is placed on 110 ℃, namely gets unburned porous nano ZnFe
2O
4-TiO
2The desulfurizing agent filter membrane.
2. unburned nanometer Zn Fe as claimed in claim 1
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane, it is characterized in that: in the step (1), the hydrolytic sol of butyl titanate, zinc nitrate and ferric nitrate is placed reactor, above-mentioned three's mol ratio is 1: 1: 98, and adding polyoxyethylene-poly-oxypropylene polyoxyethylene is that P123 is template again, and the mol ratio of P123 and titanium is 0.03: 100, the control hydrothermal temperature is 160 ℃, reaction time is 15h, is cooled to room temperature, and obtaining average grain diameter behind the washing and drying is that 18nm, specific area are 246m
2The ZnFe of/g
2O
4-TiO
2Desulfurizer powder.
3. unburned nanometer Zn Fe as claimed in claim 1
2O
4-TiO
2The preparation technology of desulfurizing agent filter membrane, it is characterized in that: in the step (2), in the Binder Materials slurry of magnesia and magnesium chloride brine composition, the addition of nanometer rice hull ash is 15～25% of magnesia quality, compound water repellent agent addition is 2.5～7.5% of magnesia quality, it forms mass ratio is siderotil: phosphoric acid: wooden sodium sulfonate: benzene emulsion=1: 1: 1: 1, the addition of expanded polystyrene particle and the volume ratio of magnesium chloride solution are 1.5～2.5: 3, after mixing, above-mentioned substance obtains chlorine oxygen magnesium supporter slip, at first lay one deck slip at plastic sheeting, lay one deck nylon wire at slip then, lay one deck slip at nylon wire again, evenly sprinkle the nanometer Zn Fe that thick layer is 1mm at last
2O
4-TiO
2Desulfurizer powder solidifies and to take dry 2h in the drying box that plastic sheeting is placed on 110 ℃ behind the 3d off, namely gets unburned porous nano ZnFe
2O
4-TiO
2The desulfurizing agent filter membrane.
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|---|---|---|---|
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|---|---|---|---|
| CN2010102901610A CN102008891B (en) | 2010-09-25 | 2010-09-25 | Preparation process of sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane |
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| CN102008891A true CN102008891A (en) | 2011-04-13 |
| CN102008891B CN102008891B (en) | 2012-10-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836634A (en) * | 2012-09-11 | 2012-12-26 | 北京世能中晶能源科技有限公司 | Desulfurization denitration method |
| CN112892487A (en) * | 2021-01-19 | 2021-06-04 | 广州华晟科创科技发展有限公司 | Composite antibacterial air purifying agent and preparation method thereof |
| CN113993372A (en) * | 2019-07-05 | 2022-01-28 | 太平洋水泥株式会社 | Material for cultivation and manufacturing method thereof |
| CN114558441A (en) * | 2022-03-02 | 2022-05-31 | 通化鑫鸿新材料有限公司 | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209422A (en) * | 2007-12-25 | 2008-07-02 | 山东理工大学 | Technique for preparing porous ceramicite loaded Ag/N-TiO2 nano film |
-
2010
- 2010-09-25 CN CN2010102901610A patent/CN102008891B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209422A (en) * | 2007-12-25 | 2008-07-02 | 山东理工大学 | Technique for preparing porous ceramicite loaded Ag/N-TiO2 nano film |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836634A (en) * | 2012-09-11 | 2012-12-26 | 北京世能中晶能源科技有限公司 | Desulfurization denitration method |
| CN113993372A (en) * | 2019-07-05 | 2022-01-28 | 太平洋水泥株式会社 | Material for cultivation and manufacturing method thereof |
| CN112892487A (en) * | 2021-01-19 | 2021-06-04 | 广州华晟科创科技发展有限公司 | Composite antibacterial air purifying agent and preparation method thereof |
| CN114558441A (en) * | 2022-03-02 | 2022-05-31 | 通化鑫鸿新材料有限公司 | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent |
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| Publication number | Publication date |
|---|---|
| CN102008891B (en) | 2012-10-31 |
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Granted publication date: 20121031 Termination date: 20130925 |