CN111330436A - Preparation method and device of deodorizing filter material - Google Patents
Preparation method and device of deodorizing filter material Download PDFInfo
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- CN111330436A CN111330436A CN202010176449.9A CN202010176449A CN111330436A CN 111330436 A CN111330436 A CN 111330436A CN 202010176449 A CN202010176449 A CN 202010176449A CN 111330436 A CN111330436 A CN 111330436A
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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
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/485—Sulfur compounds containing only one sulfur compound other than sulfur oxides or hydrogen sulfide
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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- Treating Waste Gases (AREA)
Abstract
The invention provides a preparation method of a deodorizing filter material and a device thereof, comprising the following steps: the method comprises the following steps of (1) obtaining an alkaline deodorizing filter material active alumina ball: crushing aluminum hydroxide in a ball mill, roasting in a roasting furnace, granulating in a granulator together with the mixed solution, stirring the components, and granulating on a granulator; hydrating the formed pellets in steam, and feeding the hydrated pellets into a rotary furnace for activation roasting; the method comprises the following steps of obtaining acidic deodorizing filter material phosphoric acid activated carbon: uniformly mixing the cedar chips and phosphoric acid, then sending the material into a carbonization furnace for carbonization and molding, and placing the carbonized material into an activation furnace for activation. The invention provides a preparation method of a deodorizing filter material, which realizes the simultaneous removal of acid gases such as hydrogen sulfide, methyl mercaptan and the like and alkaline gases such as ammonia and the like with low concentration in municipal odor; the filter material has strong pertinence, high removal efficiency, high utilization rate of the filter layer and long service life, and the failed filter material does not produce secondary pollution.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a preparation method of a deodorizing filter material and a device thereof.
Background
With the proposal of GB14554-2016 emission Standard for malodorous pollutants (draft of comments), and the implementation of DB31/1025 2016 emission Standard for malodorous (odor) pollutants and DB31/982 2016 emission Standard for atmospheric pollutants for municipal wastewater treatment plants, emission standards related to malodorous pollutants are continuously updated and perfected. The maximum allowable emission rate limit for malodorous pollutants is specified in GB14554-2016 emission standards for malodorous pollutants (prosecution) and DB31/1025 and 2016 emission standards for malodorous pollutants. For treating large-air-volume malodorous gas in a municipal sewage treatment plant, the emission rate can be lower than the maximum allowable emission rate only by reaching lower emission concentration, and the existing treatment methods (chemical washing, biological filtration, biological trickling filtration, activated carbon adsorption and the like) for the malodorous pollutants in the municipal industry can not meet the requirements of the latest standard by single or combined treatment.
The invention with application number 201910903112.0 discloses a method for producing aluminum oxide, potassium sulfate and sulfuric acid by suspension roasting decomposition of potassium alum, which comprises the steps of putting potassium alum into a first suspension roasting furnace system for roasting dehydration and preheating, then introducing the preheated and dehydrated anhydrous potassium alum into a second suspension roasting furnace system for high-temperature suspension roasting decomposition, cooling decomposed high-temperature reactants by a cooler, leaching with water, filtering, washing and drying to obtain aluminum oxide powder, and concentrating and crystallizing leaching solution to obtain potassium sulfate; obtaining concentrated sulfuric acid from pyrolysis gas of the second suspension roasting furnace system after waste heat recovery and catalytic oxidation absorption; according to the invention, potassium alum is removed with a large amount of crystallization moisture and preheated in the first suspension furnace, and can be rapidly decomposed in the second suspension furnace, so that moisture in pyrolysis gas in the second suspension furnace can be greatly reduced, energy consumption is reduced, the concentration of sulfur dioxide and sulfur trioxide in the pyrolysis gas is improved, subsequent waste heat recovery, sulfuric acid absorption and the like are conveniently carried out, and comprehensive utilization is realized. But the above scheme has low filtration efficiency and cannot realize high-efficiency deodorization.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a preparation method of a deodorizing filter material.
The preparation method of the deodorizing filter material provided by the invention comprises the following steps:
the method comprises the following steps of (1) obtaining an alkaline deodorizing filter material active alumina ball: crushing aluminum hydroxide in a ball mill, roasting in a roasting furnace, granulating in a granulator together with the mixed solution, stirring the components, and granulating on a granulator; hydrating the formed pellets in steam, and feeding the hydrated pellets into a rotary furnace for activation roasting;
the method comprises the following steps of obtaining acidic deodorizing filter material phosphoric acid activated carbon: uniformly mixing the cedar chips and phosphoric acid, then sending the material into a carbonization furnace for carbonization and molding, and placing the carbonized material into an activation furnace for activation.
Preferably, the step of obtaining the alkaline deodorizing filter material activated alumina balls comprises:
crushing aluminum hydroxide in a ball mill until the particle size is 6-10 microns, feeding the aluminum hydroxide into a roasting furnace, and roasting for 1-2 seconds;
in a roasting furnace with the temperature of 500-600 ℃, aluminum hydroxide is quickly dehydrated and then is sent into a granulator together with the mixed solution for granulation; the mixture solution is composed of potassium permanganate 10-15 parts, water 90-100 parts, ammonium bicarbonate 8-10 parts, and sodium carbonate 7-8 parts, and the above components are fully stirred to complete the balling operation on a balling machine;
hydrating the formed pellets in steam at 90-100 deg.c for 5-7 hr;
the hydrated material balls are sent into a rotary furnace for activation roasting, the roasting temperature is 300-400 ℃, and the roasting time is 1-2 hours.
Preferably, the ratio of the aluminum hydroxide to the mixed solution is 15: 10-12.
Preferably, the step of obtaining the alkaline deodorizing filter material activated alumina balls comprises:
uniformly mixing the cedar chips and 70-80% phosphoric acid, and feeding the mixture into a carbonization furnace for carbonization molding, wherein the carbonization temperature is 150-;
the carbonized material is placed in an activation furnace for activation, the activation temperature is 400-;
drying in a dryer at the temperature of 100 ℃ and 110 ℃ for 20-22 hours.
Preferably, the ratio of the cedar wood chips to the phosphoric acid is 1: 2-2.5.
The device provided by the invention comprises a box body, an air inlet arranged at one end of the box body, an air outlet arranged at the other end of the box body and a multi-stage filter bed arranged in the box body, wherein the filter bed is provided with a deodorizing filter material prepared by the preparation method of the deodorizing filter material.
Preferably, the deodorizing filter material comprises an alkaline deodorizing filter material, namely activated alumina balls, and an acidic deodorizing filter material, namely phosphoric acid activated carbon.
Preferably, the filter bed is made of glass fiber reinforced polyester resin.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a preparation method of a deodorizing filter material, which is applied to a deodorizing device, so that acid gases such as hydrogen sulfide and methyl mercaptan with low concentration and alkaline gases such as ammonia gas in municipal odor can be removed simultaneously;
2. the filter material produced by the invention has strong pertinence, high removal efficiency, high utilization rate of the filter layer and long service life, and the invalid filter material can be treated according to the common solid waste treatment method without generating secondary pollution.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view showing the construction of the deodorizing filter of the present invention.
The figures show that:
case 1
Exhaust port 3
Chemical filtering bed 6
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, the present invention provides a preparation method of a deodorizing filter material and a device thereof, wherein the method comprises a preparation step of an alkaline deodorizing filter material activated alumina ball and a preparation step of an acidic deodorizing filter material phosphoric acid activated carbon, and the preparation step of the alkaline deodorizing filter material activated alumina ball comprises: crushing aluminum hydroxide in a ball mill until the particle size is 6-10 microns, feeding the aluminum hydroxide into a roasting furnace, quickly roasting the aluminum hydroxide for 1 second, controlling the temperature of the roasting furnace at 600 ℃, quickly dehydrating the aluminum hydroxide at the temperature, and then feeding the aluminum hydroxide and a mixed solution into a granulator for granulation, wherein the mixed solution comprises 12 parts of potassium permanganate, 90 parts of water, 8 parts of ammonium bicarbonate and 7 parts of sodium carbonate. The components are fully stirred, and the balling operation is finished on a balling machine. The formed pellets are further hydrated in steam, the steam temperature is 90 ℃, and the hydration time is 6 hours. And (3) feeding the hydrated material balls into a rotary furnace for activating roasting at the roasting temperature of 350 ℃ for 1.5 hours to obtain the alkaline deodorizing filter material active alumina balls. The preparation method of the phosphoric acid activated carbon with the acidic deodorizing filter material comprises the following steps: the cedar chips and phosphoric acid with the concentration of 80 percent are fully and uniformly mixed, and the ratio of the cedar chips to the phosphoric acid is 1: 2.5. Then the mixed material is sent into a carbonization furnace for carbonization molding, the carbonization temperature is 200 ℃, and the carbonization time is 1 hour; and (3) putting the carbonized material into an activation furnace for activation at the activation temperature of 400 ℃ for 2 hours, and then drying in a dryer at the drying temperature of 100 ℃ for 20 hours to obtain the acidic deodorizing filter material phosphoric acid activated carbon.
The alkaline deodorizing filter material active alumina ball and the acidic deodorizing filter material phosphoric acid active carbon prepared by the preparation method provided by the invention are applied to a deodorizing device, and can be used for removing acidic and alkaline pollutants such as low-concentration hydrogen sulfide, methyl mercaptan, ammonia gas and the like in municipal odor. The deodorization device comprises a box body 1 of the deodorization device, an air inlet 2 arranged at one end of the box body 1, an air outlet 3 arranged at the other end of the box body 1 and a multi-stage chemical filter bed 4, 5 and 6 arranged inside the box body 1. In the box 1, the polluted gas enters a chemical filter bed of the multistage chemical filter equipment from an air inlet 2 through a pipeline, the chemical filter bed comprises two or more layers of filter beds, the chemical filter beds are respectively provided with an alkaline deodorization filter material or an acidic deodorization filter material, the chemical filter beds carry out physicochemical treatment such as oxidation and adsorption on odor, and the treated gas is discharged into the atmosphere from an exhaust port 3 at the tail end.
The filtering layer of the chemical filtering bed 4 adopts an alkaline deodorizing filtering material for removing acidic pollutant components such as hydrogen sulfide, methyl mercaptan and the like in the odor, and the filtering layer of the chemical filtering bed 5 adopts an acidic deodorizing filtering material for removing alkaline pollutant components such as ammonia and the like in the odor. The chemical filter bed 6 can adopt different filter layers according to the pollution components of acid or alkaline gas. In one embodiment, the filtering layer of the chemical filtering bed 6 adopts activated alumina of potassium permanganate component to further remove acidic pollutant components such as hydrogen sulfide, methyl mercaptan and the like in the odor. In another embodiment, the filter layer of the chemical filter bed 6 adopts activated carbon of phosphoric acid component to further remove alkaline pollutant components such as ammonia gas in odor.
The chemical filtering beds 4, 5 and 6 adopt V-shaped filtering beds, so that the contact area of the filtering materials and the odor is increased, and the removal efficiency of pollutants is improved. The deodorization device has good deodorization effect, can be independently used for removing pollutants with ultra-large air volume and low concentration, and can also be used for the advanced treatment of pollutants with ultra-large air volume and high concentration. High deodorization efficiency, convenient use and replacement and can reach 99 percent of removal efficiency. The deodorizing filter material has the advantages of strong pertinence, high removing efficiency, high filter layer utilization rate and long service life. The ineffective filter material can be disposed according to the treatment method of the general solid waste, does not produce the secondary pollution.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. The preparation method of the deodorizing filter material is characterized by comprising the following steps:
the method comprises the following steps of (1) obtaining an alkaline deodorizing filter material active alumina ball: crushing aluminum hydroxide in a ball mill, roasting in a roasting furnace, granulating in a granulator together with the mixed solution, stirring the components, and granulating on a granulator; hydrating the formed pellets in steam, and feeding the hydrated pellets into a rotary furnace for activation roasting;
the method comprises the following steps of obtaining acidic deodorizing filter material phosphoric acid activated carbon: uniformly mixing the cedar chips and phosphoric acid, then sending the material into a carbonization furnace for carbonization and molding, and placing the carbonized material into an activation furnace for activation.
2. The method for preparing the deodorizing filter material according to claim 1, wherein the step of obtaining the activated alumina balls of the alkaline deodorizing filter material comprises:
crushing aluminum hydroxide in a ball mill until the particle size is 6-10 microns, feeding the aluminum hydroxide into a roasting furnace, and roasting for 1-2 seconds;
in a roasting furnace with the temperature of 500-600 ℃, aluminum hydroxide is quickly dehydrated and then is sent into a granulator together with the mixed solution for granulation; the mixture solution is composed of potassium permanganate 10-15 parts, water 90-100 parts, ammonium bicarbonate 8-10 parts, and sodium carbonate 7-8 parts, and the above components are fully stirred to complete the balling operation on a balling machine;
hydrating the formed pellets in steam at 90-100 deg.c for 5-7 hr;
the hydrated material balls are sent into a rotary furnace for activation roasting, the roasting temperature is 300-400 ℃, and the roasting time is 1-2 hours.
3. The method for preparing a deodorizing filter material according to claim 2, wherein the ratio of the aluminum hydroxide to the mixed solution is 15: 10-12.
4. The method for preparing the deodorizing filter material according to claim 1, wherein the step of obtaining the activated alumina balls of the alkaline deodorizing filter material comprises:
uniformly mixing the cedar chips and 70-80% phosphoric acid, and feeding the mixture into a carbonization furnace for carbonization molding, wherein the carbonization temperature is 150-;
the carbonized material is placed in an activation furnace for activation, the activation temperature is 400-;
drying in a dryer at the temperature of 100 ℃ and 110 ℃ for 20-22 hours.
5. The method for preparing the deodorizing filter material according to claim 4, wherein the ratio of the cedar wood chips to the phosphoric acid is 1: 2-2.5.
6. An apparatus, characterized in that, comprising a box body (1), an air inlet (2) arranged at one end of the box body, an air outlet (3) arranged at the other end of the box body and a multi-stage filter bed arranged inside the box body, wherein the filter bed is provided with a deodorizing filter material prepared based on the preparation method of the deodorizing filter material according to any one of claims 1 to 5.
7. The apparatus of claim 6, wherein the deodorizing filter comprises an alkaline deodorizing filter activated alumina ball and an acidic deodorizing filter activated carbon phosphate.
8. The apparatus of claim 6, wherein the filter bed is made of glass fiber reinforced polyester resin.
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| CN202010176449.9A CN111330436A (en) | 2020-03-13 | 2020-03-13 | Preparation method and device of deodorizing filter material |
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| CN202010176449.9A CN111330436A (en) | 2020-03-13 | 2020-03-13 | Preparation method and device of deodorizing filter material |
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Application publication date: 20200626 |