CN109091956B - Preparation method of dedusting and denitration integrated filter material based on ceramic fibers - Google Patents
Preparation method of dedusting and denitration integrated filter material based on ceramic fibers Download PDFInfo
- Publication number
- CN109091956B CN109091956B CN201811196800.XA CN201811196800A CN109091956B CN 109091956 B CN109091956 B CN 109091956B CN 201811196800 A CN201811196800 A CN 201811196800A CN 109091956 B CN109091956 B CN 109091956B
- Authority
- CN
- China
- Prior art keywords
- ceramic fiber
- mixed solution
- frequency
- equal
- filter material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B01D39/2068—Other inorganic materials, e.g. ceramics
-
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen 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
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
-
- 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
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0471—Surface coating material
- B01D2239/0478—Surface coating material on a layer of the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
Abstract
The invention discloses a preparation method of a dedusting and denitration integrated filter material based on ceramic fibers, which comprises the following steps: (1) preparing materials; (2) dispersing and feeding; (3) primary mixing; (4) dispersing and feeding; (5) dispersing and feeding; (6) secondary mixing; (7) a load; (8) drying; (9) calcining; (10) and (5) coating a film. The invention has the advantages of catalytic reduction of NOx and dioxin in flue gas while flue gas dust removal by impregnating titanium dioxide particles containing catalytic components on the ceramic fiber cloth, and can achieve perfect high efficiency performance in a set of equipment by combining the ceramic fiber filter material and the denitration and dioxin removal catalyst, wherein the dust filtration efficiency can reach more than 99.99 percent, the NOx removal efficiency can reach more than 95 percent, the dioxin removal efficiency can reach more than 99 percent, the overall cost can be saved by about 25 to 35 percent, the reliability and the efficiency are high, the energy is saved, and the service life of the product is long.
Description
Technical Field
The invention belongs to the technical field of smoke purification functional materials, and particularly relates to a preparation method of a dedusting and denitration integrated filter material based on ceramic fibers.
Background
In 2018, the national emission standard of the atmospheric pollutants is more strictly implemented, and the emission standard of relevant boilers in various counties and cities is greatly required to be improved by manufacturers. And lower emission is realized, larger burden is inevitably caused to enterprises, the occupied area of the flue gas treatment system at the present stage is large, the equipment cost is high, the process is complicated, a plurality of sets of equipment are connected in series, mutual influence is easy to occur, the fault is caused, the integral operation condition of the equipment is not good, and the maintenance operation cost is increased.
Pollutants generated in flue gas of a thermal power plant comprise harmful components such as sulfur oxides, nitrogen oxides and dust, particularly, nitrogen oxides are combined with water in air and finally converted into nitric acid and nitrate, the nitric acid is one of main components of acid rain, and photochemical smog pollution can be generated with other pollutants under certain conditions.
Dioxin is a general name of chlorine-containing organic compounds containing two or one oxygen bond connecting two benzene rings, is a highly toxic substance, can cause various cancers and cause deformity of infants, and mainly comes from the emission of garbage incineration plants and related chemical plants. The existing dioxin removal method mainly comprises a flue gas quenching technology, an activated carbon adsorption technology and an SCO dioxin removal technology, wherein the SCO dioxin removal technology is most widely applied, and the principle is that under the action of special dioxin removal ceramic, dioxin is decomposed into HCl and CO2、H2O, a dioxin removal catalyst is the key of the technology.
The common ceramic fiber is also called as aluminum silicate fiber, and the ceramic fiber product has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance and the like, and can be used in various high-temperature, high-pressure and easily-worn environments.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method is characterized by constructing a filter material which takes ceramic fibers as a main base material, loads catalytic active ingredients and is manufactured by a specific production process, and solving the problem that the prior art cannot efficiently remove dust, denitrate and remove dioxin at the same time.
The invention adopts the following technical scheme to solve the technical problems:
a preparation method of a dedusting and denitration integrated filter material based on ceramic fibers comprises the following steps:
(1) preparing materials: adding TiO into the mixture2Mixing kaolin, barium sulfate, stearic acid, a catalytic component and water in proportion to obtain a mixed solution A;
(2) dispersing and feeding: under the low-speed rotation state, mixing 20% ammonia water, lactic acid and the mixed solution A to obtain a mixed solution B;
(3) primary mixing: mixing the mixed solution B for one time at the rotating speed of 650 plus 850rpm and the forward rotation time of more than or equal to 20min, wherein the target PH value is more than 7.0;
(4) dispersing and feeding: under the low-speed rotation state, mixing ammonium monoethanol, water and the mixed solution B obtained in the step (3) to obtain a mixed solution C;
(5) dispersing and feeding: mixing the amino cellulose, the polyethylene oxide and the mixed solution C under the low-speed rotation state to obtain a mixed solution D;
(6) and (3) secondary mixing: carrying out secondary mixing on the mixed solution D under the conditions that the rotating speed is 650 plus 850rpm and the reverse rotation time is more than or equal to 20min, wherein the target PH value is 7.5-8.5;
(7) loading: immersing the ceramic fiber cloth into the mixed solution D mixed in the step (6) for immersion treatment;
(8) and (3) drying: drying the ceramic fiber cloth subjected to the dipping treatment in the step (7) in sections;
(9) and (3) calcining: calcining the dried ceramic fiber cloth in sections;
(10) film covering: and (4) coating the ceramic fiber composite membrane on the ceramic fiber cloth treated in the step (9), and discharging to obtain the ceramic fiber cloth.
Further, the formula of the mixed solution A in the step (1) is as follows: 50-70 wt% TiO23-8 wt% of kaolin, 3-5 wt% of barium sulfate, 0.3-0.5 wt% of stearic acid, 15-25 wt% of catalytic component and 10-20 wt% of water; wherein the catalytic component is one or more of oxides of vanadium, manganese, copper, iron, molybdenum, cerium, tungsten and lanthanum, preferably: one or more of ammonium metavanadate, manganese nitrate, copper nitrate, ferric nitrate, ammonium heptamolybdate, cerium nitrate, ammonium metatungstate and lanthanum nitrate.
Further, in the step (2), under the conditions that the rotating speed is less than or equal to 100rpm and the forward transmission time is more than or equal to 10min, the mixed solution B is obtained by mixing 20% of ammonia water, lactic acid and the mixed solution A in a mass ratio of (5-7) to (0.5-0.7) to 100.
Further, in the step (4), under the conditions that the rotating speed is less than or equal to 100rpm and the reversal time is more than or equal to 10min, the monoethanol ammonium, the water and the mixed solution B are mixed according to the mass ratio of (0.5-0.7) to (10-15) to 100 to obtain the mixed solution C.
Further, in the step (5), the mixed solution D is obtained by mixing the amino cellulose, the polyethylene oxide and the mixed solution C in a mass ratio of (0.1-0.3) to (0.5-0.8) to 100 under the conditions that the rotating speed is less than or equal to 100rpm and the reverse rotation time is more than or equal to 10 min.
Further, in the step (7), the ceramic fiber cloth and the mixed solution D are placed in vacuum impregnation equipment according to the volume ratio of 1: 4-10, the vacuum degree is 100-.
Further, the ceramic fiber cloth is prepared by the following method:
a. treating a ceramic raw material: 40-70 wt% Al2O3、20-35wt％SiO20-8 wt% of charcoal pore-increasing agent and 0-2 wt% of Fe2O30-2 wt% of MgO and 0-3 wt% of graphene are mixed;
b. pulping: c, dissolving the ceramic raw material obtained in the step a in a high polymer matrix material, and uniformly stirring to obtain mixed slurry;
c. spinning: b, placing the mixed slurry prepared in the step b into a melt spinning device, setting the temperature at 100-;
d. and (3) heat treatment: and c, placing the protofilament obtained in the step c in a vacuum high-temperature melting furnace, heating to 1400 ℃ and 1800 ℃ at the speed of 40-80 ℃/min under vacuum, and treating for 5-24h to obtain the ceramic fiber cloth, wherein the porosity of the ceramic fiber cloth is required to be more than or equal to 60%.
Further, the drying in the step (8) is divided into 7 drying intervals, and the setting is as follows:
a first interval: at 25 ℃, 120min, the frequency of an internal circulation fan is 10Hz, and the frequency of a moisture exhaust fan is 10 Hz;
a second interval: at 30 ℃, 120min, the frequency of an internal circulation fan is 15Hz, and the frequency of a moisture removal fan is 15 Hz;
the third interval: at 35 ℃, 120min, the frequency of an internal circulation fan is 20Hz, and the frequency of a moisture exhaust fan is 20 Hz;
a fourth interval: at 40 ℃, 120min, the frequency of an internal circulation fan is 25Hz, and the frequency of a moisture exhaust fan is 25 Hz;
the fifth interval: at the temperature of 45 ℃, 120min, the frequency of an internal circulation fan is 30Hz, and the frequency of a moisture exhaust fan is 30 Hz;
a sixth interval: at 50 ℃, 120min, the frequency of an internal circulation fan is 35Hz, and the frequency of a moisture exhaust fan is 40 Hz;
the seventh interval: at 50 ℃, 120min, the frequency of an internal circulation fan is 40Hz, and the frequency of a moisture exhaust fan is 45 Hz.
Further, the calcination in the step (9) adopts a mesh belt kiln, the transmission speed is 1.6m/h, the calcination is divided into 25 temperature intervals, and the intervals are set as follows: 70 deg.C, 80 deg.C, 120 deg.C, 150 deg.C, 185 deg.C, 220 deg.C, 260 deg.C, 300 deg.C, 350 deg.C, 400 deg.C, 450 deg.C, 500 deg.C, 530 deg.C, 520 deg.C, 500 deg.C, 470 deg.C, 420 deg.C, 370 deg.C, 320 deg.C, 260 deg.C, 210.
Further, in the step (10), the ceramic fiber composite membrane is coated on the ceramic fiber cloth in a coating mode; the ceramic fiber composite membrane is commercially available, and the average pore diameter of the membrane layer is 5-30 um.
The invention has the following beneficial effects: compared with the prior art, the invention has the following advantages:
1. meanwhile, particulate matters, NOx and dioxin are removed, the ceramic fiber filter material and the denitration and dioxin removal catalyst are combined, perfect high efficiency performance is achieved in one set of equipment, the dust filtering efficiency can reach more than 99.99%, the NOx removal efficiency can reach more than 95%, and the dioxin removal efficiency can reach more than 99%.
2. Better economic benefits: the overall cost can be saved by about 25-35%.
3. Reliable and high efficiency: the treatment efficiency of the nitrogen oxide can reach more than 95 percent; the treatment efficiency of dioxin can reach more than 99 percent; the concentration of particulate matter in exhaust gas is less than 5mg/Nm3。
4. The product has long service life: the filter material adopting the ceramic fiber as the base material has the advantages of high temperature resistance (the filter material can resist 900 ℃), flame retardance, corrosion resistance and the like which are obviously superior to those of the conventional filter material, and meanwhile, the surface of the filter material can effectively block arsenic, selenium, sodium and other metals which are harmful to the catalyst, so that the service life of the catalyst is greatly prolonged.
5. Energy conservation: the filter material added with the catalyst can also treat waste gas at 350 ℃, and produce clean hot air for other purposes of factories, thereby reducing energy consumption of the heat exchanger.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described.
Example 1
A ceramic fiber cloth is prepared by the following method:
(1) and processing the ceramic raw material: by 60 wt% Al2O3、25wt％SiO24 wt% of charcoal pore-forming agent and 1 wt% of Fe2O31 wt% of MgO and 2 wt% of graphene are proportioned, the particle size range is required to be 100-400nm, and then the materials are uniformly mixed in the following way: firstly, rotating at a speed of less than or equal to 100rpm for a forward mixing time of more than or equal to 10min, and then rotating at a speed of less than or equal to 100rpm for a reverse mixing time of more than or equal to 10 min;
(2) pulping: dissolving the ceramic raw material obtained in the step (1) in a high polymer matrix material, wherein the molecular weight of the high polymer is 200000-500000, and uniformly stirring to obtain mixed slurry; the stirring mode is as follows: low-speed rotation (forward rotation, rotation speed less than or equal to 100rpm, time more than or equal to 10min), primary stirring (forward rotation, rotation speed of 650 plus 850rpm, time more than or equal to 20min), low-speed rotation (reverse rotation, rotation speed less than or equal to 100rpm, time more than or equal to 10min), secondary stirring (reverse rotation, rotation speed of 650 plus 850rpm, time more than or equal to 20 min);
(3) and spinning: enabling the mixed slurry prepared in the step (2) to pass through an M02 type high-temperature melt spinning machine, setting the temperature at 130 ℃, and spinning at the speed of 300M/min after the mixed slurry is heated uniformly to obtain protofilaments;
(4) and (3) heat treatment: placing the protofilament obtained in the step (3) in a vacuum high-temperature furnace, and replacing Ar and N in vacuum in the working atmosphere2Protecting, heating to 1400 ℃ and 1800 ℃ at the speed of 60 ℃/min, and treating for 5-24h to obtain the ceramic fiber cloth, wherein the porosity of the ceramic fiber cloth is required to be more than or equal to 60%.
Example 2
A preparation method of a dedusting and denitration integrated filter material based on ceramic fibers comprises the following steps:
(1) preparing materials: in the stopped state, according to 60 wt% TiO25 wt% kaolin, 4 wt% sulfurMixing barium acid, 0.4 wt% of stearic acid, 20 wt% of ammonium metavanadate and 15 wt% of water to obtain a mixed solution A;
(2) dispersing and feeding: under the state of low-speed rotation (forward rotation, the rotating speed is less than or equal to 100rpm, and the time is more than or equal to 10min), mixing according to the mass ratio of 20% ammonia water, lactic acid and mixed liquor A being 6: 0.6: 100 to obtain mixed liquor B;
(3) primary mixing: mixing the mixed solution B for one time at the rotating speed of 650 plus 850rpm and the forward rotation time of more than or equal to 20min, wherein the target PH value is more than 7.0;
(4) dispersing and feeding: under the conditions that the rotating speed is less than or equal to 100rpm and the reverse rotation time is more than or equal to 10min, mixing the monoethanol ammonium, the water and the mixed solution B according to the mass ratio of 0.6: 13: 100 to obtain a mixed solution C;
(5) dispersing and feeding: under the conditions that the rotating speed is less than or equal to 100rpm and the reverse rotation time is more than or equal to 10min, mixing the amino cellulose, the polyethylene oxide and the mixed solution C according to the mass ratio of 0.2: 0.7: 100 to obtain a mixed solution D;
(6) and (3) secondary mixing: carrying out secondary mixing on the mixed solution D under the conditions that the rotating speed is 650 plus 850rpm and the reverse rotation time is more than or equal to 20min, wherein the target PH value is 7.5-8.5;
(7) loading: immersing the ceramic fiber cloth into the mixed solution D mixed in the step (6), and placing the mixture D into vacuum impregnation equipment for impregnation treatment according to the volume ratio of the ceramic fiber cloth to the mixed solution D of 1: 8, wherein the vacuum degree is 100-5000Pa, the impregnation time is 6h, and the impregnation times are 4 times;
(8) and (3) drying: and (3) drying the ceramic fiber cloth subjected to the dipping treatment in the step (7) in sections, wherein the drying is divided into 7 drying intervals, and the drying intervals are set as follows:
(9) and (3) calcining: the dried ceramic fiber cloth is calcined in sections, the calcination adopts a mesh belt kiln mode, the transmission speed is 1.6m/h, the calcination is divided into 25 temperature sections, and the sections are arranged as follows:
(10) film covering: coating a ceramic fiber composite film on the ceramic fiber cloth treated in the step (9) in a coating mode, and discharging to obtain the ceramic fiber cloth; the ceramic fiber composite membrane is commercially available, and the average pore diameter of the membrane layer is 5-30 um; the coating method can be seen in (Xueyuxing, preparation of ceramic fiber composite microfiltration membrane and performance characterization [ Master's academic thesis ] (D), Wuhan: Wuhan university of science and engineering, 2002), (high temperature ceramic filter element for hot gas purification and preparation method thereof, CN1569306, Shandong Industrial ceramics research and design institute, Xueyuxing, etc.).
The specific surface area of the titanium dioxide particles is more than 90m2The water content of the titanium dioxide raw material is less than or equal to 2% (drying at 130 ℃ for 2h), the ignition loss is less than or equal to 5% (processing at 1000 ℃ for 1h after water measurement), the microstructure requires uniform fineness and no edges and corners (smooth and slick), and the pH value is 2-4.
This example was tested to verify its performance in the following way:
the dust removal and denitration integrated filter material is subjected to a filtration performance test by adopting a German TOPAS-AFC-133VDI dynamic filtration efficiency test platform, and the test standard is as follows: ISO11057, tests with dust: 100% standard dust (alumina) (particle size 0.3 to 20 μm), sample number S20180130001.001. The test results are shown in table 1: the dust removal filtration efficiency can be seen from table 1: 99.9981 percent.
Table 1 dust removal and denitration integrated filter material dust removal and filtration performance test result
Adopt full-automatic activity evaluation device to carry out denitration performance to this dust removal denitration integration filter material and test, the test standard: GB/T31587-2015 honeycomb type flue gas denitration catalyst, sample number is S20180130001.002.
Denitration efficiency test conditions:
test results table 2:
table 2 dust removal and denitration integrated filter material denitration efficiency test result
| Sample numbering | S20180130001.002 |
| Actually measured eta value | 96.7％(360℃) |
| Actually measured eta value | 96％(340℃) |
| Actually measured eta value | 96％(330℃) |
| Actually measured eta value | 95.2％(300℃) |
The working principle of the ceramic catalyst filter material of the invention is as follows: the mixed high-temperature waste gas (170-; the ammonia water reduces the nitrogen oxide into nitrogen under the action of the catalyst along with the waste gas entering the ceramic filter material, so that the catalyst can also enable the equipment to have the function of efficiently removing dioxin besides removing the pollutants.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A preparation method of a dedusting and denitration integrated filter material based on ceramic fibers is characterized by comprising the following steps:
(1) preparing materials: adding TiO into the mixture2Mixing kaolin, barium sulfate, stearic acid, a catalytic component and water in proportion to obtain a mixed solution A;
(2) dispersing and feeding: under the low-speed rotation state, mixing 20% ammonia water, lactic acid and the mixed solution A to obtain a mixed solution B;
(3) primary mixing: under the conditions that the rotating speed is 650 plus 850rpm and the forward rotation time is more than or equal to 20min, the mixed solution B is mixed for one time, and the target p H value is more than 7.0;
(4) dispersing and feeding: under the low-speed rotation state, mixing ammonium monoethanol, water and the mixed solution B obtained in the step (3) to obtain a mixed solution C;
(5) dispersing and feeding: mixing the amino cellulose, the polyethylene oxide and the mixed solution C under the low-speed rotation state to obtain a mixed solution D;
(6) and (3) secondary mixing: under the conditions that the rotation speed is 650 plus 850rpm and the reverse rotation time is more than or equal to 20min, carrying out secondary mixing on the mixed solution D, wherein the target p H value is 7.5-8.5;
(7) loading: immersing the ceramic fiber cloth into the mixed solution D mixed in the step (6) for immersion treatment;
(8) and (3) drying: drying the ceramic fiber cloth subjected to the dipping treatment in the step (7) in sections; (9) calcination: calcining the dried ceramic fiber cloth in sections;
(10) film covering: coating a ceramic fiber composite membrane on the ceramic fiber cloth treated in the step (9), and discharging to obtain the ceramic fiber cloth;
the formula of the mixed liquid A in the step (1) is as follows: 50-70 wt% TiO23 to 8 weight percent of kaolin, 3 to 5 weight percent of barium sulfate, 0.3 to 0.5 weight percent of stearic acid and 15 to 25 weight percent ofCatalytic components and 10-20 wt% of water, wherein the sum of the contents of the components is equal to 100%; wherein the catalytic component is one or more of vanadium oxide, manganese oxide, copper oxide, iron oxide, molybdenum oxide, cerium oxide, tungsten oxide and lanthanum oxide;
the ceramic fiber cloth is prepared by the following method:
a. treating a ceramic raw material: 40-70 wt% Al2O3、20-35wt％SiO20-8 wt% of charcoal pore-increasing agent and 0-2 wt% of Fe2O30-2 wt% of MgO and 0-3 wt% of graphene, wherein the sum of the contents of all the components is equal to 100%;
b. pulping: c, dissolving the ceramic raw material obtained in the step a in a high polymer matrix material, and uniformly stirring to obtain mixed slurry;
c. spinning: b, placing the mixed slurry prepared in the step b into a melt spinning device, setting the temperature at 100-;
d. and (3) heat treatment: and c, placing the protofilament obtained in the step c in a vacuum high-temperature melting furnace, heating to 1400 ℃ and 1800 ℃ at the speed of 40-80 ℃/min under vacuum, and treating for 5-24h to obtain the ceramic fiber cloth, wherein the porosity of the ceramic fiber cloth is required to be more than or equal to 60%.
2. The preparation method of the ceramic fiber-based dedusting and denitration integrated filter material as claimed in claim 1, wherein the catalytic component is one or more of ammonium metavanadate, manganese nitrate, copper nitrate, ferric nitrate, ammonium heptamolybdate, cerium nitrate, ammonium metatungstate and lanthanum nitrate.
3. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein in the step (2), under the conditions that the rotating speed is less than or equal to 100rpm and the forward transmission time is more than or equal to 10min, the mixed solution B is obtained by mixing 20% of ammonia water, lactic acid and mixed solution A in the mass ratio of (5-7) to (0.5-0.7) to 100.
4. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein in the step (4), under the conditions that the rotating speed is less than or equal to 100rpm and the reversal time is more than or equal to 10min, the mixture C is obtained by mixing the monoethanol ammonium, the water and the mixed solution B in the mass ratio of (0.5-0.7) to (10-15) to 100.
5. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein in the step (5), the mixed liquid D is obtained by mixing the amino cellulose, the polyethylene oxide and the mixed liquid C in a mass ratio of (0.1-0.3) to (0.5-0.8) to 100 under the conditions that the rotating speed is less than or equal to 100rpm and the reverse rotation time is more than or equal to 10 min.
6. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein in the step (7), the ceramic fiber cloth and the mixed solution D are placed in a vacuum impregnation device according to a volume ratio of 1: 4-10, a vacuum degree is 5000-Pa, an impregnation time is 3-10h, and impregnation times are 3-5 times.
7. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein the drying in the step (8) is divided into 7 drying intervals, and the setting is as follows:
a first interval: at 25 ℃, 120min, the frequency of an internal circulation fan is 10Hz, and the frequency of a moisture exhaust fan is 10 Hz;
a second interval: at 30 ℃, 120min, the frequency of an internal circulation fan is 15Hz, and the frequency of a moisture removal fan is 15 Hz;
the third interval: at 35 ℃, 120min, the frequency of an internal circulation fan is 20Hz, and the frequency of a moisture exhaust fan is 20 Hz;
a fourth interval: at 40 ℃, 120min, the frequency of an internal circulation fan is 25Hz, and the frequency of a moisture exhaust fan is 25 Hz;
the fifth interval: at the temperature of 45 ℃, 120min, the frequency of an internal circulation fan is 30Hz, and the frequency of a moisture exhaust fan is 30 Hz;
a sixth interval: at 50 ℃, 120min, the frequency of an internal circulation fan is 35Hz, and the frequency of a moisture exhaust fan is 40 Hz;
the seventh interval: at 50 ℃, 120min, the frequency of an internal circulation fan is 40Hz, and the frequency of a moisture exhaust fan is 45 Hz.
8. The method for preparing the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein the calcination in the step (9) is in a mesh belt kiln form, the transmission speed is 1.6m/h, the mesh belt kiln is divided into 25 temperature intervals, and the intervals are set as follows: 70 deg.C, 80 deg.C, 120 deg.C, 150 deg.C, 185 deg.C, 220 deg.C, 260 deg.C, 300 deg.C, 350 deg.C, 400 deg.C, 450 deg.C, 500 deg.C, 530 deg.C, 520 deg.C, 500 deg.C, 470 deg.C, 420 deg.C, 370 deg.C, 320 deg.C, 260 deg.C, 210.
9. The preparation method of the dedusting and denitration integrated filter material based on the ceramic fiber as claimed in claim 1, wherein in the step (10), the ceramic fiber composite membrane is coated on the ceramic fiber cloth in a coating mode; the ceramic fiber composite membrane is commercially available, and the average pore diameter of the membrane layer is 5-30 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196800.XA CN109091956B (en) | 2018-10-15 | 2018-10-15 | Preparation method of dedusting and denitration integrated filter material based on ceramic fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196800.XA CN109091956B (en) | 2018-10-15 | 2018-10-15 | Preparation method of dedusting and denitration integrated filter material based on ceramic fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109091956A CN109091956A (en) | 2018-12-28 |
| CN109091956B true CN109091956B (en) | 2020-12-08 |
Family
ID=64868806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196800.XA Active CN109091956B (en) | 2018-10-15 | 2018-10-15 | Preparation method of dedusting and denitration integrated filter material based on ceramic fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109091956B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603308B (en) * | 2019-01-28 | 2021-05-14 | 蔡盼 | Preparation method of ceramic filter plate |
| CN110201541B (en) * | 2019-07-11 | 2021-10-12 | 江苏天雅环保科技有限公司 | Method and device for loading catalyst on ceramic fiber filter element |
| CN110354912A (en) * | 2019-08-08 | 2019-10-22 | 杭州玺富环保科技有限公司 | Catalytic type ceramic fibre chimney filter production line and production technology |
| CN112958127B (en) * | 2021-02-26 | 2023-03-31 | 上海大学材料基因组工程(萍乡)研究院 | Method for loading catalyst on ceramic fiber |
| CN115262280B (en) * | 2021-04-30 | 2023-10-27 | 中国科学院过程工程研究所 | Fiber paper and preparation method and application thereof |
| TWI768949B (en) * | 2021-06-03 | 2022-06-21 | 展立工程顧問股份有限公司 | A method of treating waste gas containing volatile organic compounds |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6267889B1 (en) * | 2000-01-26 | 2001-07-31 | Mdf, Llc | Rotary drum filter |
| US6331351B1 (en) * | 1999-09-22 | 2001-12-18 | Gore Enterprise Holdings, Inc. | Chemically active filter material |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11309317A (en) * | 1998-04-28 | 1999-11-09 | Babcock Hitachi Kk | Bag filter |
| KR101460437B1 (en) * | 2013-03-29 | 2014-11-12 | 고려대학교 산학협력단 | Nano-catalytic filter and manufacturing method thereof |
| CN104014200B (en) * | 2014-05-29 | 2015-10-28 | 南京工业大学 | A kind of preparation method of dedusting denitrification integral filtrate |
| JP6649777B2 (en) * | 2016-01-19 | 2020-02-19 | 日本碍子株式会社 | Honeycomb structure |
| CN106215546B (en) * | 2016-08-25 | 2018-09-07 | 清华大学天津高端装备研究院 | A kind of self assembly catalyst coat filtrate and preparation method thereof |
| CN106334374B (en) * | 2016-10-13 | 2018-11-20 | 中冶赛迪工程技术股份有限公司 | The preparation method and product of a kind of dedusting and the filtering material for decomposing bioxin |
| CN107243256B (en) * | 2017-06-21 | 2020-03-17 | 浙江大学 | Integrated catalytic ceramic filter for dust removal and denitration of flue gas |
| CN107961619B (en) * | 2017-12-11 | 2021-02-09 | 中材科技膜材料（山东）有限公司 | Preparation method of multifunctional membrane-covered filter material |
| CN108421309A (en) * | 2018-03-14 | 2018-08-21 | 成都新柯力化工科技有限公司 | A kind of filter felt and preparation method for flue-gas dust removal and purification |
| CN108434870B (en) * | 2018-03-27 | 2020-12-01 | 江苏天雅环保科技有限公司 | Filter element type carrier and preparation method thereof, and supported catalyst and preparation method thereof |
-
2018
- 2018-10-15 CN CN201811196800.XA patent/CN109091956B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6331351B1 (en) * | 1999-09-22 | 2001-12-18 | Gore Enterprise Holdings, Inc. | Chemically active filter material |
| US6267889B1 (en) * | 2000-01-26 | 2001-07-31 | Mdf, Llc | Rotary drum filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109091956A (en) | 2018-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109091956B (en) | Preparation method of dedusting and denitration integrated filter material based on ceramic fibers | |
| JP4860076B2 (en) | Process for producing a catalyst for selective catalytic reduction of nitrogen oxides | |
| WO2015149499A1 (en) | Low-temperature and highly efficient denitration catalyst and preparation method therefor | |
| CN101676024A (en) | Faviform ammonia-method selective-catalytic-reduction denitrified catalyst and preparation method thereof | |
| CN106390990A (en) | Method for modifying special exhaust gas denitrification catalyst | |
| CN107876043A (en) | A kind of ceramic catalytic filter core and flue gas integration desulfurization denitration dust removal method for gas cleaning | |
| CN104741113B (en) | A kind of inexpensive denitrating catalyst and preparation method thereof | |
| CN109224874A (en) | A kind of catalytic membrane and preparation method thereof for air cleaning | |
| CN111715234A (en) | Can simultaneously remove CO and SO2And NOxCatalyst of (2) | |
| CN107694575A (en) | A kind of complex carrier SCR denitration and preparation method | |
| CN103861581A (en) | Perovskite-type substance La<1-x>Sr<x>CrO<3>, heat-engine plant denitration composite catalyst, and preparation methods of perovskite-type substance La<1-x>Sr<x>CrO<3> and heat-engine plant denitration composite catalyst | |
| CN103861653A (en) | Modified titanium dioxide, ultrafine crystal ceramic powder, high-strength heat-engine plant denitration catalyst, and preparation methods of modified titanium dioxide, ultrafine crystal ceramic powder, and high-strength heat-engine plant denitration catalyst | |
| CN107126950A (en) | A kind of honeycomb type denitrification catalyst and preparation method thereof | |
| CN106238064A (en) | A kind of ferrum cerium red mud composite oxides denitration catalyst agent material and preparation method thereof | |
| CN109589967B (en) | High-activity sulfur-resistant SCR denitration catalyst and preparation method thereof | |
| CN113426458B (en) | Catalyst for catalytic combustion of halogen-containing volatile organic compounds and application thereof | |
| CN110270324A (en) | Graininess honeycomb denitrating catalyst and preparation method thereof | |
| CN111530449B (en) | Wall-flow dedusting low-temperature denitration honeycomb catalyst for flue gas and preparation process thereof | |
| EP1726565A1 (en) | Carbon material and flue gas treatment apparatus | |
| CN104415766A (en) | Coal-fired power station flue gas denitration composite catalyst and preparation method thereof | |
| TW201634106A (en) | Catalyzed ceramic candle filter and method of cleaning process off- or exhaust gases | |
| CN103331140B (en) | Demercuration adsorbent and preparation method thereof | |
| US20060178263A1 (en) | Carbon material and flue gas treatment apparatus | |
| CN110252328A (en) | A method of honeycomb, which is prepared, with useless SCR catalyst takes off dioxin catalyst | |
| CN113941338B (en) | Denitration and dust removal integrated ceramic tube catalyst and preparation method thereof, and flue gas denitration and dust removal method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |