CN106362497B - Integrated device and method for filtering environmental pollutants and regenerating filter material - Google Patents
Integrated device and method for filtering environmental pollutants and regenerating filter material Download PDFInfo
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- CN106362497B CN106362497B CN201610801008.7A CN201610801008A CN106362497B CN 106362497 B CN106362497 B CN 106362497B CN 201610801008 A CN201610801008 A CN 201610801008A CN 106362497 B CN106362497 B CN 106362497B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
- B01D41/04—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids of rigid self-supporting filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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Abstract
The invention belongs to the field of environmental engineering and equipment, and provides an integrated device and method for filtering environmental pollutants and regenerating filter materials. The integrated filter material regeneration device comprises a high-temperature-resistant gradient pore ceramic filter material, a high-temperature calcination module, an ultrasonic cleaning module and a heat insulation layer, wherein the filter material is applied to filter fine particles and colloidal pollutants in a gas and fluid environment, one end with a larger pore diameter of the filter material faces to a feed inlet, when the filter material is blocked to a certain degree or is timed, the filter material is regenerated, the direction of the filter material is reversed, the filter material is placed in a filter material regeneration cavity, and the high-temperature calcination treatment and the ultrasonic cleaning treatment of the filter material are sequentially carried out, so that the filter material can be completely regenerated and recycled.
Description
Technical Field
The invention belongs to the field of environmental engineering and equipment, and relates to a device and a method for filtering environmental pollutants and regenerating filter materials.
Background
The filtration treatment is an extremely important and common industrial treatment and environmental management mode, is used for filtering or collecting some non-filterable substances in fluids such as liquid, gas and the like, and has various and ineffectual modes. It is more common in environmental remediation to filter out various harmful environmental pollutants, and there are generally two problems: firstly, the problems of blockage and backflushing of the filter material; second, the problem of disposing of the reject. Generally, the second problem is not much concerned in the environmental field, but the problem of the efficiency of filtering the environmental pollutants in the fluid is more concerned, and the blockage and backflushing of the filter material are the first problem, and quite a plurality of patent technologies are designed aiming at the filtering efficiency and the blockage backflushing. In fact, the environmental pollutants are still potentially harmful after being filtered out from the water environment and the gas environment, but people usually pay less attention to the quality of the water environment and the gas environment after being filtered. The invention provides a novel design concept aiming at the situations, the filter material and the environmental pollutants filtered and intercepted on the filter material are treated and regenerated simultaneously, and the problems of potential hazard of the filtered and intercepted environmental pollutants and blockage and regeneration of the filter material can be solved once and for all. Specifically, the invention selects a high-temperature-resistant porous material as a filter material, namely porous ceramic, and utilizes the high-efficiency filtration interception and adsorption performance and the high-temperature-resistant characteristic of the porous ceramic to periodically replace and calcine the porous ceramic and the environmental pollutants filtered and intercepted on the porous ceramic, so that the cleaned and calcined porous ceramic filter material can be reused, the thoroughness of environmental management and the reusability of the filter material can be greatly improved, and a whole set of related processes and equipment is designed.
In fact, the porous ceramics are commonly used as filtering devices in the fields of environmental governance and industry, and are often used in high-temperature places such as molten metal filtration, high-temperature flue gas treatment, food industry and the like due to the high-temperature resistance of the porous ceramics, but the porous ceramics are not commonly used in the field of environmental governance. Although a small amount of literature data mentions that high-temperature sintering of porous ceramics is an ideal regeneration method, specific equipment design and process parameter experiments are still lacking. The related patent technologies such as 2007800413360 and 2014108207503 are similar to the present invention in part of their principles, but the specific embodiments, processes and equipment designs are different from the present invention. In general, fine particles and colloidal environmental pollutants are difficult to remove from fluid environments such as gas and water, and often remain in a certain stage of environmental treatment, such as on a microporous filter, various filter materials, a biological bag for circulating water treatment or a biological treatment tank, which additionally increases the difficulty and pressure of environmental treatment.
The invention realizes the integrated equipment and process design of environmental pollutant filtering treatment and filter material high-temperature regeneration and cleaning for the first time, is simple and efficient, and is superior to the prior similar technology.
Disclosure of Invention
The invention aims to solve the defects and shortcomings of the prior art and provides an integrated device and method for filtering environmental pollutants and regenerating filter materials.
The specific technical scheme is as follows:
an integrated device for filtering environmental pollutants and regenerating filter materials comprises a filter material high-temperature calcining module, an ultrasonic cleaning module and a heat insulating layer; the filter material high-temperature calcining module consists of a heating electric furnace wire, a temperature sensor and a calcining regeneration program controller; the ultrasonic cleaning module consists of two ultrasonic generators and an ultrasonic cleaning program controller; a filter material regeneration cavity is formed by the surrounding of the heat insulation layer; the heating electric furnace wire is arranged in the heat insulation layer and is arranged in a surrounding way on one side close to the filter material regeneration cavity; the calcining regeneration program controller is respectively connected with the heating electric furnace wire and the temperature sensor and is used for controlling the temperature in the filter material regeneration cavity so as to control the calcining regeneration of the filter material; the two ultrasonic generators are respectively arranged at the upper end and the lower end of the heat insulation layer, are positioned outside the filter material regeneration cavity, are connected with the ultrasonic cleaning program controller and are used for controlling the generation of oscillation ultrasonic waves in the filter material cleaning process; the filter material regeneration cavity is filled with gradient pore ceramic filter materials.
The high temperature resistant upper limit of the gradient pore ceramic filter material is 950 ℃; the aperture of the filter material pores is 1-700 microns, and the pores are distributed in the filter material in a gradient way; the porosity of the filter material is 20-50%, the compressive strength is 20-100 MPa, and harmful substances cannot be corroded and damaged or dissolved out within the pH value range of 2-13.
Filter material pore gradient distributes in the filter material, and the one end pore aperture of filter material is less relatively promptly, between 1~350 microns, then grow gradually, and the other end pore aperture of filter material is between 350~700 microns.
The shape of the filter material is one of a cylinder, a cuboid and a Z shape.
The method of applying the integrated device for filtering environmental pollutants and regenerating filter materials comprises the following steps:
a. under the filtering working condition, the filter material regeneration cavity is positively filled with the gradient pore ceramic filter material, namely, the end with relatively larger pore diameter of the filter material pores faces the direction of the feeding bin, and the end with relatively smaller pore diameter of the filter material pores faces the direction of the discharging bin; when the device works for a certain time, the filtering material is seriously blocked to cause poor filtering effect, and when the filtering material needs to be replaced, the calcining regeneration and ultrasonic cleaning procedures of the filtering material can be started by reversing the direction of the filtering material.
b. The high-temperature calcination regeneration process comprises the steps of reversely placing the gradient pore ceramic filter material used under the filtering working condition in a filter material regeneration cavity, namely, reversely placing the filter material in the opposite direction to the direction in the filtering working condition, opening a valve, setting the calcination temperature and time through a calcination regeneration program controller, controlling a heating furnace wire to heat the filter material regeneration cavity, keeping the calcination temperature not more than 900 ℃, maintaining the calcination time corresponding to the temperature after the set calcination temperature is reached, and then automatically cutting off a power supply to start the natural cooling process.
c. The process comprises the following steps of (1) carrying out ultrasonic cleaning, wherein the cleaned filter material is a calcined and regenerated filter material, the direction of the filter material is opposite to the direction under the filtering working condition, when the temperature of the filter material is reduced to be below 80 ℃, a valve below the filter material is closed, cleaning liquid is injected into a filter material regeneration cavity, 10-50ppm of surfactant is added, the ultrasonic frequency and the cleaning time are set through an ultrasonic cleaning program controller, an upper ultrasonic generator and a lower ultrasonic generator simultaneously generate ultrasonic waves, the filter material after high-temperature calcination is washed in an oscillating manner, the filter material is automatically stopped after the set time is reached, and then the valve below the filter material is opened to; the ultrasonic cleaning process is repeated for a plurality of times, and the surfactant is not added in the repeated cleaning process until the filter material can be used as a brand new filter material for new filtering working conditions.
Under necessary conditions, the integrated device can be used independently or a plurality of integrated devices can be used in parallel or in series, the plurality of integrated devices can be controlled by a valve, and working conditions are alternately switched between a filtering working condition and a calcining and cleaning working condition in turn, so that the aim of continuous working is fulfilled.
The method has the advantages of realizing the integrated high-temperature calcination regeneration and cleaning of the porous ceramic after filtering environmental pollutants, along with simple process, and improving the filtering effect and the reusability of the porous ceramic. The method can efficiently intercept and filter the fine particles and colloidal environmental pollutants which cannot be removed by the conventional environmental management mode, can thoroughly treat the intercepted environmental pollutants, is particularly suitable for the situation that the organic matter content of the environmental pollutants is relatively high, has good environmental protection benefits, can greatly improve the treatment efficiency and treatment effect of the fine particles and the colloidal environmental pollutants, saves manpower and material resources, has good market application prospect, and is suitable for popularization and application.
Drawings
FIG. 1 is a schematic view of an integrated apparatus for filtering environmental pollutants and regenerating filter media according to the present invention.
FIG. 2 is a schematic view of the shape of a porous ceramic filter.
FIG. 3 is a schematic view of the separating filter device of the porous ceramic filter material of the present invention.
FIG. 4 is a schematic view of the integrated device for high-temperature calcination and cleaning of the separating filter of the present invention.
In the figure: 1, feeding a material bin; 2, an ultrasonic generator; 3 ultrasonic cleaning program controller; 4 heating the electric furnace wire; 5, a valve; 6 discharging from a bin; 7, a heat insulation layer; 8, a filter material regeneration cavity; 9 a temperature sensor; 10 calcining regeneration program controller; 11 gradient pore porous ceramic filter material; 12 a filter material regeneration cavity which is empty.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the accompanying drawings and technical solutions of the present invention.
The process for filtering the environmental pollutants and regenerating the filter material comprises the steps of manufacturing gradient pore corundum porous ceramic with a specific shape and a pore diameter of 1-700 microns as a filter material for filtering the environmental pollutants in fluid environments such as gas, water and the like, and when the filter material is blocked to a certain degree and the filtering effect is reduced, reversing the direction of the filter material and placing the filter material in a special filter material regenerating device for calcining regeneration and ultrasonic cleaning, so that the filtered environmental pollutants can be thoroughly treated, the filter material can be perfectly regenerated, can be repeatedly utilized, and has the effects of high efficiency, simplicity and environmental protection.
The gradient pore porous ceramic filter material is mainly cylindrical, cuboid and Z-shaped, the pore diameter of one end or one surface of the gradient pore porous ceramic filter material is relatively larger and is between 350 and 700 micrometers, and the pore diameter of the other end or the other surface of the gradient pore porous ceramic filter material is relatively smaller and is between 1 and 350 micrometers. The gradient pore filter material provided by the invention is used in the working condition of filtering work, one end or one surface with relatively large pore diameter of the pore is towards the feeding direction, the other end or one surface with relatively small pore diameter of the pore is towards the discharging direction, and the direction of the filter material is just opposite to that of the filter material under the working condition of calcining, regenerating and cleaning.
The filtering and filter material regeneration device for the environmental pollutants is formed by combining a high-temperature calcination module and an ultrasonic cleaning module, the main body of the filtering and filter material regeneration device is a cavity formed by heat-insulating and high-temperature-resistant materials, the cavity is called a filter material regeneration cavity, and a heating electric furnace wire and a control module are surrounded to form a high-temperature controllable temperature device. The two ends of the cavity are provided with an ultrasonic generator, a control module and a valve below the ultrasonic generator and the control module, so that ultrasonic washing equipment is formed. Therefore, the integrated equipment designed by the invention can be used for high-temperature calcination regeneration and ultrasonic cleaning of the porous ceramic filter material, an upper feeding bin and a discharge bin are additionally arranged, and the gradient pore porous ceramic filter material designed by the invention is filled, and can also be used for filtering environmental pollutants. In the following, a few examples of the application of the invention are briefly described.
Example 1, the present technology is used for filtration treatment of domestic drinking water.
Under certain conditions, the quality of tap water is not completely satisfactory, and most families purchase barrels of water or expensive various types of water dispensers, and the water dispensers all need to replace filter devices after using for a certain period of time. The integrated filtering and regenerating device shown in the attached figure 1 of the specification of the invention is similar to a common table-type water dispenser in size, a cylindrical gradient pore porous ceramic filter material is arranged, and one end with relatively larger pores is upwards arranged in a filter material cavity. The feeding bin is filled with tap water, the discharging bin is filled with filtered effluent, and the effluent can be drunk or used for other families after being heated and sterilized. After the porous ceramic filter material is used for a period of time, if the water outlet is slow, the cylindrical porous ceramic filter material can be inverted, the calcining temperature is set to be 700 ℃, the calcining time is set to be 4 hours, and the filter material calcining regeneration procedure is started. After the temperature is reduced after the calcination is finished, a valve 5 below the device is closed, tap water is injected, household washing powder or laundry detergent is added as a surfactant according to the washing capacity of one kilogram of clothes, and an ultrasonic cleaning program is started. After the cleaning is completed in half an hour, the cleaning procedure is repeated for 3 times without adding washing powder, and finally, bottled water is used for cleaning twice. After the cleaning is finished, the porous ceramic is turned upside down, and the porous ceramic can be continuously used as a new filter material.
Example 2, the technique of the invention was used for dust removal from the tail gas of an agricultural pulverizer.
Agricultural grinders are commonly used for grinding feed materials of certain low-value agricultural products, such as coarse feed materials of vine straws, rice hulls, barnyard grass and the like, a large amount of dust is usually generated in the operation process, a cloth bag type dust collector is generally used for dust removal, and even though considerable fine particle dust still exists in tail gas of the agricultural grinders. The tail gas can be treated by adopting the separation type ceramic filtering process and equipment, as shown in the attached figure 3 of the specification, the gradient pore porous ceramic is used as a filter material for tail gas adsorption and filtration treatment of an agricultural crusher, and the end with larger pores of the filter material faces to the feeding direction, so that fine particle dust which cannot be removed by a conventional cloth bag type dust collector can be efficiently captured. When the porous ceramics adsorbs more trapped dust and the blockage is serious, the gradient pore porous ceramics are replaced, a standby filter material is replaced, and the replaced filter material is regenerated by the device shown in the attached figure 4 of the specification. And (3) upward filling one end of the replaced small pore of the filter material into regeneration integrated equipment, setting the calcination temperature to be 750 ℃ and the calcination time to be 4 hours, and starting a filter material calcination regeneration program. After the temperature is reduced after the calcination is completed, the valve 5 below the device is closed, tap water is injected, and the ultrasonic cleaning program is started. After the cleaning is completed for half an hour, the cleaning procedure is repeated for 2 times, and the cleaned filter material can be used as a new filter material for treating the tail gas dust of the agricultural pulverizer again.
Example 3, the technology of the invention is used for water treatment for industrial circulating water fishery aquaculture.
The industrial circulating water fishery culture is an important direction for the development of the current fishery technology, and has the advantages of small occupied area, high yield, good benefit and the like, wherein water treatment and recycling are core technologies. The water treatment technology applied to the current fishery recirculating aquaculture is difficult to thoroughly treat the fine particulate matters and colloidal matters in the water body, the matters generally originate from the processes of dispersion, dissolution, degradation and the like of residual baits and excrements, secretions and other matters of aquaculture objects, and the final degradation products can generate negative effects on fishery aquaculture organisms in various aspects, which is an important problem faced by the industrial recirculating aquaculture. The gradient pore porous ceramic is used as a water filtering treatment filter material for circulating water fishery culture production, as shown in the attached figure 3 of the specification, one end with larger pores faces to the water inlet direction, and the other end with smaller pores faces to the water outlet direction, so that fine particulate matters and colloidal matters in a water body can be well trapped and filtered. And replacing the new standby filter material at regular time every day, and regenerating the replaced filter material. And (3) upward loading one end of the replaced small pore of the filter material into regeneration integrated equipment, setting the calcination temperature to be 750 ℃ and the calcination time to be 6 hours as shown in the attached figure 4 of the specification, and starting a filter material calcination regeneration program. After the calcination temperature is reduced, the valve 5 below the device is closed, tap water is injected, 30ppm of anionic surfactant is added, and the ultrasonic cleaning procedure is started. After the cleaning is completed for half an hour, the cleaning procedure is repeated for 3 times, but no anionic surfactant is added, and the cleaned filter material can be used as a new filter material for water treatment of industrial circulating water fishery aquaculture.
Example 4, the technology of the present invention was used for treatment of wastewater from the printing and dyeing industry.
The printing and dyeing industrial wastewater belongs to one of large industrial wastewater, has the characteristics of high salt content, high COD content, low biodegradability, toxicity and the like, and various dye residues and the like used in the process are often substances which are difficult to degrade and have certain toxicity, have deep colors and are not discharged arbitrarily, so that the printing and dyeing industrial wastewater is a class which is very difficult to treat in the industrial wastewater. The prior various printing and dyeing industrial wastewater treatment processes have certain problems, and lack of a perfect treatment method, and the problem of low biodegradability of printing and dyeing wastewater can be better solved by adopting the technology of the invention as one of the main treatment steps. The gradient pore porous ceramic is used as a filtering material for filtering and adsorbing printing and dyeing wastewater, as shown in figure 3 in the attached drawing of the specification, one end with larger pores faces to the water inlet direction, and the other end with smaller pores faces to the water outlet direction, so that residual dye and other refractory substances in the printing and dyeing wastewater can be well intercepted and adsorbed. The new standby filter material is replaced 2 times every day at regular time, and the replaced filter material is regenerated. One end of the small pore of the replaced filter material is upwards loaded into the regeneration integrated equipment, as shown in the attached figure 4 of the specification, the replaced filter material is added into the vacant filter material regeneration cavity 12, the calcination temperature is set to be 800 ℃, the calcination time is set to be 4 hours, and the filter material calcination regeneration procedure is started. After the calcination temperature is reduced, the valve 5 below the device is closed, tap water is injected, 25ppm of anionic surfactant is added, and the ultrasonic cleaning procedure is started. And after the cleaning is completed for half an hour, repeating the cleaning procedure for 3 times, but not adding the anionic surfactant, and reusing the cleaned filter material as a new filter material for treating the printing and dyeing wastewater. Because of the higher COD content of the printing and dyeing wastewater, the requirement of sewage discharge standard is difficult to be met by one-time filtration and adsorption treatment, or the requirement of process reuse water, and the technical process can be adopted to repeatedly carry out filtration and adsorption of the printing and dyeing wastewater and calcination and regeneration treatment of filter materials. The porous ceramic filter material in the treatment process can quickly reach the adsorption saturation, namely, the porous ceramic filter material is deeply dyed by the printing and dyeing wastewater, and the porous ceramic filter material can be repeatedly used after the color of the porous ceramic filter material disappears after the porous ceramic filter material is calcined, regenerated and ultrasonically cleaned, namely, the porous ceramic filter material is repeatedly used for adsorbing, calcining and eluting pollutants in the printing and dyeing wastewater until the quality of the printing and dyeing wastewater reaches the sewage discharge standard or the requirement of reuse water of the printing and dyeing industry process. Wherein, the high salt content of the printing and dyeing wastewater does not influence the treatment effect of the technology, and the salt substances in the printing and dyeing wastewater can be recycled. That is, the technology of the invention can greatly improve the recovery rate of the process water for the printing and dyeing industry, and has good economic benefit and environmental protection effect.
Claims (5)
1. An integrated device for filtering environmental pollutants and regenerating filter materials is characterized by comprising a filter material high-temperature calcining module, an ultrasonic cleaning module and a heat insulating layer (7); the filter material high-temperature calcining module consists of a heating electric furnace wire (4), a temperature sensor (9) and a calcining regeneration program controller (10); the ultrasonic cleaning module consists of two ultrasonic generators and an ultrasonic cleaning program controller (3); a filter material regeneration cavity (8) is formed by the surrounding of the heat insulation layer; the heating electric furnace wire (4) is arranged in the heat insulation layer and is arranged in a surrounding way on one side close to the filter material regeneration cavity (8); the calcining regeneration program controller (10) is respectively connected with the heating electric furnace wire (4) and the temperature sensor (9) and is used for controlling the temperature in the filter material regeneration cavity (8) so as to control the calcining regeneration of the filter material; the two ultrasonic generators are respectively arranged at the upper end and the lower end of the heat insulation layer, are positioned outside the filter material regeneration cavity (8), are connected with the ultrasonic cleaning program controller (3) and are used for controlling the generation of oscillation ultrasonic waves in the filter material cleaning process; the filter material regeneration cavity (8) is filled with a gradient pore ceramic filter material (11);
the high temperature resistant upper limit of the gradient pore ceramic filter material is 950 ℃; the aperture of the filter material pores is 1-700 microns, and the pores are distributed in the filter material in a gradient way; the porosity of the filter material is 20-50%, the compressive strength is 20-100 MPa, and harmful substances cannot be corroded and damaged or dissolved out within the pH value range of 2-13;
filter material pore gradient distributes in the filter material, and the one end pore aperture of filter material is less relatively promptly, between 1~350 microns, then grow gradually, and the other end pore aperture of filter material is between 350~700 microns.
2. The integrated device for filtering environmental pollutants and recycling filter media of claim 1, wherein the filter media is one of cylindrical, rectangular and Z-shaped.
3. The integrated device for filtering environmental pollutants and regenerating filter material as claimed in claim 1 or 2, wherein the device is used singly or in parallel or in series.
4. The method for using the integrated device for filtering environmental pollutants and regenerating filter material as claimed in any one of claims 1 to 3, wherein the method comprises the following steps:
a. under the filtering working condition, gradient pore ceramic filtering materials are positively filled in the filtering material regeneration cavity (8), namely, one end with relatively large pore diameter of the filtering material pores faces the direction of the feeding bin (1), and the other end with relatively small pore diameter of the filtering material pores faces the direction of the discharging bin (6);
b. the high-temperature calcination regeneration process comprises the steps of reversely placing the gradient pore ceramic filter material used under the filtering working condition into a filter material regeneration cavity (8), namely, reversely placing the filter material in a direction opposite to the direction under the filtering working condition, enabling a valve (5) to be in an open state, setting the calcination temperature and time through a calcination regeneration program controller (10), controlling a heating electric furnace wire (4) to heat the filter material regeneration cavity (8), enabling the calcination temperature not to exceed 900 ℃, maintaining the calcination time corresponding to the temperature after the set calcination temperature is reached, then automatically cutting off a power supply, and starting a natural cooling process;
c. the process comprises the following steps of ultrasonic cleaning, wherein the cleaned filter material is a calcined and regenerated filter material, the direction of the filter material is opposite to the direction under the filtering working condition, when the temperature of the filter material is reduced to be below 80 ℃, a valve (5) below the filter material is closed, cleaning liquid is injected into a filter material regeneration cavity (8), 10-50ppm of surfactant is added, the ultrasonic frequency and the cleaning time are set through an ultrasonic cleaning program controller (3), an upper ultrasonic generator and a lower ultrasonic generator simultaneously generate ultrasonic waves, the filter material after high-temperature calcination is washed in an oscillating mode, the automatic stop is realized after the set time is reached, and then the valve (5) below the ultrasonic cleaning device is opened to exhaust cleaning liquid; the ultrasonic cleaning process is repeated for a plurality of times, and the surfactant is not added in the repeated cleaning process until the filter material can be used as a brand new filter material for new filtering working conditions.
5. The method as claimed in claim 4, wherein the ultrasonic frequency is 2 kHz or more.
Priority Applications (1)
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| CN113413647A (en) * | 2021-03-06 | 2021-09-21 | 韩方 | Ultrasonic filter cleaning technology |
| CN117943132B (en) * | 2024-03-26 | 2024-06-18 | 浙江省白马湖实验室有限公司 | In-situ regeneration method of carbon-based catalyst |
Citations (3)
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| US4867768A (en) * | 1987-08-21 | 1989-09-19 | Donaldson Company, Inc. | Muffler apparatus with filter trap and method of use |
| CN103446808A (en) * | 2012-06-01 | 2013-12-18 | 远东科技大学 | Regeneration method of invalid ceramic oil filter material |
| CN104566665A (en) * | 2014-12-26 | 2015-04-29 | 合肥创想能源环境科技有限公司 | Air purification device capable of filtering and killing pathogenic microorganisms by use of porous ceramic membrane |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867768A (en) * | 1987-08-21 | 1989-09-19 | Donaldson Company, Inc. | Muffler apparatus with filter trap and method of use |
| CN103446808A (en) * | 2012-06-01 | 2013-12-18 | 远东科技大学 | Regeneration method of invalid ceramic oil filter material |
| CN104566665A (en) * | 2014-12-26 | 2015-04-29 | 合肥创想能源环境科技有限公司 | Air purification device capable of filtering and killing pathogenic microorganisms by use of porous ceramic membrane |
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