CN113350893A - Method for manufacturing glass microporous gas and liquid filter material with catalytic degradation function - Google Patents
Method for manufacturing glass microporous gas and liquid filter material with catalytic degradation function Download PDFInfo
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- CN113350893A CN113350893A CN202110756309.3A CN202110756309A CN113350893A CN 113350893 A CN113350893 A CN 113350893A CN 202110756309 A CN202110756309 A CN 202110756309A CN 113350893 A CN113350893 A CN 113350893A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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Abstract
The invention discloses a method for manufacturing a glass microporous gas and liquid filter material with a catalytic degradation function, which comprises the following steps of 1: preparing the raw material of the filter material according to the following mass percentage, 60-60.8% of glass powder and 4-5.22% of titanium dioxide. Has the advantages that: the prepared glass microporous gas and liquid filter material with the catalytic degradation function can save more than 40% of purchase cost and more than 30% of operation cost for a using unit, and the filter material can be used for efficiently desulfurizing and denitrating in the dust removal process, so that the investment of environmental protection cost for a coal burning unit is greatly reduced, compared with the traditional desulfurizing and denitrating process, the denitration and deacidification efficiency is greatly improved, the discharge amount of sulfur and nitre is reduced, and the zero discharge of waste liquid and solid in the desulfurizing, denitrating and dust removing processes is realized.
Description
Technical Field
The invention relates to the technical field of filter materials for filtering, purifying, desulfurizing and denitrating industrial smoke dust, catalyzing and degrading industrial sewage and filtering, and particularly relates to a manufacturing method of a glass microporous gas and liquid filter material with a catalytic degradation function.
Background
In order to achieve harmless emission of industrial smoke, a filter material is often used for dedusting the industrial smoke before emission.
The filter material for filtering industrial smoke dust in the market at present comprises a ceramic microporous filter material and a high-temperature corrosion-resistant glass microporous filter material prepared by adopting a dry powder mould pressing method, wherein the raw materials of the ceramic microporous filter material are all nano-grade raw materials, the raw material cost is high, the production cost is high, the energy consumption is high, the market sale price is about 1000-1250 yuan per square meter, the industries of industrial high-temperature dust removal, sewage treatment and the like are not capable of being widely applied in large-scale industrialization, and meanwhile, the raw materials of the filter material do not have catalytic degradation of living body components, and the functions of desulfurization and denitration cannot be realized at the same time of high-temperature dust removal; the high-temperature corrosion-resistant glass microporous filter material prepared by adopting a dry powder molding method is formed by integrally sintering mixed powder in a mold, the compaction density and uniformity of the powder are restricted, mold sticking is easily caused, the distribution uniformity and pore diameter difference of micropores on the surface and inside of the filter material are large, the filtering precision and efficiency are influenced, the mold material and the processing and manufacturing cost are high due to the expensive mold material, the mold and the powder are sintered at high temperature together, fatigue deformation and scale cinder shedding are easily generated, the energy consumption is high, the production efficiency is low, the yield is low, the production cost is high, meanwhile, the filter material raw material does not contain catalytic degradation living body components, the desulfurization and denitration functions can not be realized while high-temperature dust removal is carried out, a catalytic living body is added, and the technical bottleneck problems of uniform dispersion, stable combination and living body poisoning of the catalytic living body and a carrier also exist.
Disclosure of Invention
The invention aims to solve the problems and provide a method for manufacturing a glass microporous gas and liquid filter material with a catalytic degradation function.
The invention realizes the purpose through the following technical scheme:
a method for manufacturing a glass microporous gas and liquid filter material with a catalytic degradation function comprises the following steps:
step 1: preparing the raw material of the filter material according to the following mass percentage content
60-60.8% of glass powder, 4-5.22% of titanium dioxide, 2-3.04% of calcium carbonate, 2.5-3.38% of sodium bicarbonate, 3.2-3.52% of sodium fluosilicate, 2-2.2% of sodium phosphate, 7.3-8.64% of jejunum shell activated carbon, 2-3.04% of yttrium oxide, 1.3-2.06% of tungsten oxide, 2.5-3.38% of hydroxypropyl methylcellulose and 8.4-9.56% of aluminum dihydrogen phosphate;
step 2: preparation of filtering material blank
Fully and uniformly mixing the filter material raw material powder in the step 1 in a three-dimensional powder mixing stirrer for 15 minutes, and then preparing a filter material green blank with a certain shape by using an isostatic pressing mold with a required shape through an isostatic pressing powder forming machine;
and step 3: and (3) drying and sintering the green blanks of the filter materials prepared in the step (2) in sequence, carrying out heat preservation, cooling and annealing on the green blanks after drying and sintering, and then carrying out trimming, cleaning, detecting, packaging and warehousing on the green blanks to obtain finished glass microporous gas and liquid filter materials with the catalytic degradation function.
Further, when sintering the filter material green blank in the step 3, the first-stage sintering temperature of the filter material green blank is 50-60 ℃, and the second-stage sintering temperature of the filter material green blank is 110-115 ℃.
Further, when sintering the filter material green blank in the step 3, the temperature poison raising speed of the filter material green blank at one section is 3-4 ℃/min, and the temperature is raised to 350-420 ℃; the second-stage heating speed is 4-4.3 ℃/min, and the temperature is increased to 820-; the temperature reduction speed of the three sections is 2.5-3.5 ℃/min, and the temperature is reduced to 670 ℃; the four-stage cooling speed is 6-6.8 ℃/min, and the temperature is reduced to the room temperature.
Further, the first-stage heat preservation drying time of the filter material green blank in the step 3 is 115-150min, and the second-stage heat preservation drying time of the filter material green blank in the step 3 is 120-150 min.
Further, the first-stage sintering heat preservation time of the filter material green body in the step 3 is 55-63min, the second-stage sintering heat preservation time of the filter material green body in the step 3 is 56-60min, and the third-stage sintering heat preservation time of the filter material green body in the step 3 is 56-62 min.
Further, an orthogonal test method is adopted to carry out optimization tests on the raw material proportion, the drying and sintering process technical parameters and the heat preservation process technical parameters of the glass microporous gas and liquid filter material with the catalytic degradation function according to a three-factor four-level scheme, and the more ideal process technical matching parameters are as follows:
the raw material ratio is as follows: 60.40% of glass powder, 4.61% of titanium dioxide, 2.52% of calcium carbonate, 2.94% of sodium bicarbonate, 3.36% of sodium fluosilicate, 2.10% of sodium phosphate, 7.87% of jejunum shell activated carbon, 2.52% of yttrium oxide, 1.68% of tungsten oxide, 2.94% of hydroxypropyl methylcellulose and 9.06% of aluminum dihydrogen phosphate;
drying and sintering technological parameters:
drying: the first-stage drying temperature is 60 ℃, and the second-stage drying temperature is 110 ℃;
and (3) sintering: first-stage heating rate: 3.5 ℃/min, heating to 400 ℃, and the second-stage heating speed: 4.15 ℃/min, heating to 840 ℃, and three-section cooling speed: 2.7 ℃/min, cooling to 650 ℃, and four-stage cooling speed: cooling to room temperature at a speed of 6.5 ℃/min;
the heat preservation process parameters are as follows:
drying: and (3) keeping the temperature for a period of time: 120min, and the second-stage heat preservation time: 125 min;
and (3) sintering: and (3) keeping the temperature for a period of time: 60min, and the second-stage heat preservation time: 60min, three-stage heat preservation time: and (5) 60 min.
Further, the performance of the glass microporous gas and liquid filter material with the catalytic degradation function and the filter material in the prior art are as follows:
the comparison of the data in the table shows that the glass microporous gas and liquid filter material with the catalytic degradation function can be subjected to desulfurization and denitration treatment while performing high-temperature dust removal, and has the characteristics of low energy consumption and long service life.
The invention has the beneficial effects that:
the prepared glass microporous gas and liquid filter material with the catalytic degradation function can save more than 40% of purchase cost and more than 30% of operation cost for a using unit, and the filter material can be used for efficiently desulfurizing and denitrating in the dust removal process, so that the investment of environmental protection cost for a coal burning unit is greatly reduced, compared with the traditional desulfurizing and denitrating process, the denitration and deacidification efficiency is greatly improved, the discharge amount of sulfur and nitre is reduced, and the zero discharge of waste liquid and solid in the desulfurizing, denitrating and dust removing processes is realized.
Detailed Description
A method for manufacturing a glass microporous gas and liquid filter material with a catalytic degradation function comprises the following steps:
step 1: preparing the raw material of the filter material according to the following mass percentage content
60-60.8% of glass powder, 4-5.22% of titanium dioxide, 2-3.04% of calcium carbonate, 2.5-3.38% of sodium bicarbonate, 3.2-3.52% of sodium fluosilicate, 2-2.2% of sodium phosphate, 7.3-8.64% of jejunum shell activated carbon, 2-3.04% of yttrium oxide, 1.3-2.06% of tungsten oxide, 2.5-3.38% of hydroxypropyl methylcellulose and 8.4-9.56% of aluminum dihydrogen phosphate;
step 2: preparation of filtering material blank
Fully and uniformly mixing the filter material raw material powder in the step 1 in a three-dimensional powder mixing stirrer for 15 minutes, and then preparing a filter material green blank with a certain shape by using an isostatic pressing mold with a required shape through an isostatic pressing powder forming machine;
and step 3: and (3) drying and sintering the green blanks of the filter materials prepared in the step (2) in sequence, carrying out heat preservation, cooling and annealing on the green blanks after drying and sintering, and then carrying out trimming, cleaning, detecting, packaging and warehousing on the green blanks to obtain finished glass microporous gas and liquid filter materials with the catalytic degradation function.
In this embodiment, when the green filter material blank is sintered in step 3, the first-stage sintering temperature of the green filter material blank is 50-60 ℃, and the second-stage sintering temperature of the green filter material blank is 110-.
In this embodiment, when the green filter material blank is sintered in step 3, the temperature toxicity raising speed of the green filter material blank is 3-4 ℃/min, and the temperature is raised to 350-420 ℃; the second-stage heating speed is 4-4.3 ℃/min, and the temperature is increased to 820-; the temperature reduction speed of the three sections is 2.5-3.5 ℃/min, and the temperature is reduced to 670 ℃; the four-stage cooling speed is 6-6.8 ℃/min, and the temperature is reduced to the room temperature.
In this embodiment, the first-stage heat preservation drying time of the filter material green blank in the step 3 is 115-.
In this embodiment, the first sintering heat preservation time of the filter material green body in the step 3 is 55 to 63min, the second sintering heat preservation time of the filter material green body in the step 3 is 56 to 60min, and the third sintering heat preservation time of the filter material green body in the step 3 is 56 to 62 min.
In the embodiment, an orthogonal test method is adopted to carry out optimization tests on the raw material proportion, the drying and sintering process technical parameters and the heat preservation process technical parameters of the glass microporous gas and liquid filter material with the catalytic degradation function according to a three-factor four-level scheme, and the more ideal process technical matching parameters are as follows:
the raw material ratio is as follows: 60.40% of glass powder, 4.61% of titanium dioxide, 2.52% of calcium carbonate, 2.94% of sodium bicarbonate, 3.36% of sodium fluosilicate, 2.10% of sodium phosphate, 7.87% of jejunum shell activated carbon, 2.52% of yttrium oxide, 1.68% of tungsten oxide, 2.94% of hydroxypropyl methylcellulose and 9.06% of aluminum dihydrogen phosphate;
drying and sintering technological parameters:
drying: the first-stage drying temperature is 60 ℃, and the second-stage drying temperature is 110 ℃;
and (3) sintering: first-stage heating rate: 3.5 ℃/min, heating to 400 ℃, and the second-stage heating speed: 4.15 ℃/min, heating to 840 ℃, and three-section cooling speed: 2.7 ℃/min, cooling to 650 ℃, and four-stage cooling speed: cooling to room temperature at a speed of 6.5 ℃/min;
the heat preservation process parameters are as follows:
drying: and (3) keeping the temperature for a period of time: 120min, and the second-stage heat preservation time: 125 min;
and (3) sintering: and (3) keeping the temperature for a period of time: 60min, and the second-stage heat preservation time: 60min, three-stage heat preservation time: and (5) 60 min.
In this embodiment, the performance of the glass microporous gas/liquid filter material with catalytic degradation function and the filter material in the prior art are as follows:
the comparison of the data in the table shows that the glass microporous gas and liquid filter material with the catalytic degradation function can be subjected to desulfurization and denitration treatment while performing high-temperature dust removal, and has the characteristics of low energy consumption and long service life.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for manufacturing a glass microporous gas and liquid filter material with a catalytic degradation function is characterized in that: it comprises the following steps:
step 1: preparing the raw material of the filter material according to the following mass percentage content
60-60.8% of glass powder, 4-5.22% of titanium dioxide, 2-3.04% of calcium carbonate, 2.5-3.38% of sodium bicarbonate, 3.2-3.52% of sodium fluosilicate, 2-2.2% of sodium phosphate, 7.3-8.64% of jejunum shell activated carbon, 2-3.04% of yttrium oxide, 1.3-2.06% of tungsten oxide, 2.5-3.38% of hydroxypropyl methylcellulose and 8.4-9.56% of aluminum dihydrogen phosphate;
step 2: preparation of filtering material blank
Fully and uniformly mixing the filter material raw material powder in the step 1 in a three-dimensional powder mixing stirrer for 15 minutes, and then preparing a filter material green blank with a certain shape by using an isostatic pressing mold with a required shape through an isostatic pressing powder forming machine;
and step 3: and (3) drying and sintering the green blanks of the filter materials prepared in the step (2) in sequence, carrying out heat preservation, cooling and annealing on the green blanks after drying and sintering, and then carrying out trimming, cleaning, detecting, packaging and warehousing on the green blanks to obtain finished glass microporous gas and liquid filter materials with the catalytic degradation function.
2. The manufacturing method of the glass microporous gas and liquid filter material with the catalytic degradation function according to claim 1, characterized in that: in the step 3, when the green filter material blank is sintered, the first-stage sintering temperature of the green filter material blank is 50-60 ℃, and the second-stage sintering temperature of the green filter material blank is 110-115 ℃.
3. The manufacturing method of the glass microporous gas and liquid filter material with the catalytic degradation function according to claim 1, characterized in that: in the step 3, when the green filter material blank is sintered, the temperature poison raising speed of one section of the green filter material blank is 3-4 ℃/min, and the temperature is raised to 350-420 ℃; the second-stage heating speed is 4-4.3 ℃/min, and the temperature is increased to 820-; the temperature reduction speed of the three sections is 2.5-3.5 ℃/min, and the temperature is reduced to 670 ℃; the four-stage cooling speed is 6-6.8 ℃/min, and the temperature is reduced to the room temperature.
4. The manufacturing method of the glass microporous gas and liquid filter material with the catalytic degradation function according to claim 1, characterized in that: the first-stage heat preservation drying time of the filter material green blank in the step 3 is 115-150min, and the second-stage heat preservation drying time of the filter material green blank in the step 3 is 120-150 min.
5. The manufacturing method of the glass microporous gas and liquid filter material with the catalytic degradation function according to claim 1, characterized in that: the primary sintering heat preservation time of the filter material green body in the step 3 is 55-63min, the secondary sintering heat preservation time of the filter material green body in the step 3 is 56-60min, and the tertiary sintering heat preservation time of the filter material green body in the step 3 is 56-62 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813364A (en) * | 2023-04-07 | 2023-09-29 | 丹东天皓净化材料有限公司 | Preparation method of microporous gas-liquid filter tube capable of degrading organic harmful substances, desulfurizing and denitrifying |
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| CN1772383A (en) * | 2005-11-03 | 2006-05-17 | 安泰科技股份有限公司 | Porous catalytic filtering metal material and its prepn |
| CN112057953A (en) * | 2020-08-24 | 2020-12-11 | 辽宁喜来益净化环保科技有限公司 | Preparation method of activated carbon titanium dioxide catalyzed glass microporous gas and liquid filter material |
| WO2021022877A1 (en) * | 2019-08-05 | 2021-02-11 | 江西博鑫精陶环保科技有限公司 | Flange for high-temperature dust and nitrate integrated purification ceramic filter element and preparation process therefor |
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2021
- 2021-07-05 CN CN202110756309.3A patent/CN113350893A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772383A (en) * | 2005-11-03 | 2006-05-17 | 安泰科技股份有限公司 | Porous catalytic filtering metal material and its prepn |
| WO2021022877A1 (en) * | 2019-08-05 | 2021-02-11 | 江西博鑫精陶环保科技有限公司 | Flange for high-temperature dust and nitrate integrated purification ceramic filter element and preparation process therefor |
| CN112057953A (en) * | 2020-08-24 | 2020-12-11 | 辽宁喜来益净化环保科技有限公司 | Preparation method of activated carbon titanium dioxide catalyzed glass microporous gas and liquid filter material |
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| 王瑞生: "《无机非金属材料实验教程》", 31 May 2004, 冶金工业出版社 * |
| 邹建新: "《钒钛功能材料》", 31 March 2019, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813364A (en) * | 2023-04-07 | 2023-09-29 | 丹东天皓净化材料有限公司 | Preparation method of microporous gas-liquid filter tube capable of degrading organic harmful substances, desulfurizing and denitrifying |
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