CN114515495A - VOCs adsorption filter screen regeneration method and device, terminal equipment and storage medium - Google Patents

VOCs adsorption filter screen regeneration method and device, terminal equipment and storage medium Download PDF

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Publication number
CN114515495A
CN114515495A CN202011305576.0A CN202011305576A CN114515495A CN 114515495 A CN114515495 A CN 114515495A CN 202011305576 A CN202011305576 A CN 202011305576A CN 114515495 A CN114515495 A CN 114515495A
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filter screen
vocs
rotor
regeneration
concentration
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CN202011305576.0A
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CN114515495B (en
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杨翠霞
陈新厂
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The invention relates to the technical field of air purification, in particular to a method and a device for regenerating a VOCs adsorption filter screen, terminal equipment and a storage medium. The method is based on a filter screen rotor, wherein a first part of the filter screen rotor faces a purification side, a second part of the filter screen rotor faces a regeneration side, and a filter screen cleaning assembly is arranged on the regeneration side; the method comprises the following steps: acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor; when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, the first part and the second part of the filter screen rotor are subjected to position exchange, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning assembly. This application is through setting up the filter screen into the rotor structure, when adsorbing the filter screen saturation, carries out the position with the part of saturation and unsaturated part and exchanges to regenerate saturated part, make the absorption filter screen can regular automatic regeneration, need not to change the filter screen, save the later maintenance expense.

Description

VOCs adsorption filter screen regeneration method and device, terminal equipment and storage medium
Technical Field
The invention relates to the technical field of air purification, in particular to a method and a device for regenerating a VOCs adsorption filter screen, terminal equipment and a storage medium.
Background
At present, for removing VOCs (Volatile Organic Compounds), the air purification device usually removes VOCs by activated carbon adsorption, photocatalysis, plasma catalysis, ozone degradation, and the like. The efficiency of removing VOCs by photocatalysis, plasma concerted catalysis and ozone is low. The plasma concerted catalysis and the ozone VOCs removing technology have the problem that the ozone concentration exceeds the standard.
The removal of VOCs by adsorption is high in efficiency, but the adsorption material is extremely easy to adsorb and saturate, and secondary pollution is caused if the adsorption material is not replaced in time; the activated carbon filter screen with saturated adsorption is replaced regularly, extra expense is generated, the discarded old filter screen can pollute the environment, and at present, the old filter screen is rarely recycled in a centralized way for industrial regeneration.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method and a device for regenerating a VOCs adsorption filter screen, terminal equipment and a storage medium, and aims to solve the technical problem of regeneration of the VOCs adsorption filter screen.
In order to achieve the above object, the present invention provides a method for regenerating a VOCs adsorption filter screen, which is applied to an air treatment device, wherein the air treatment device comprises a filter screen rotor, a first part of the filter screen rotor faces a purification side, a second part of the filter screen rotor faces a regeneration side, the regeneration side is provided with a filter screen cleaning assembly, and the purification side is the side of the air treatment device opposite to the outdoor direction;
the method comprises the following steps:
acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor;
when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, the first part and the second part of the filter screen rotor are subjected to position exchange, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning assembly.
Optionally, when the current concentration difference of the VOCs is smaller than or equal to a preset concentration difference, performing position exchange on the first part and the second part of the strainer rotor to regenerate the first part of the strainer rotor through the strainer cleaning assembly specifically includes:
when the concentration difference of the current VOCs is smaller than or equal to a preset concentration difference, performing position exchange on a first part and a second part of the filter screen rotor;
performing a thermocatalytic regeneration of the first portion by the screen cleaning assembly while the first portion is on a regeneration side.
Optionally, the screen cleaning assembly comprises a heater and a fan; the heater is arranged on the inner side of the filter screen rotor, and the air outlet end of the fan is arranged towards the heater;
when the first part is located the regeneration side, carry out the step of thermal catalytic regeneration to the first part through filter screen clearance subassembly specifically includes:
when the first part is positioned at the regeneration side, the first part is heated to a preset temperature range through the heater, and the first part is blown through the fan to be regenerated.
Optionally, the screen cleaning assembly comprises a heater and a fan; the heater is arranged on the inner side of the filter screen rotor, and the air inlet end of the fan is arranged towards the outer side of the filter screen rotor;
when the first part is located the regeneration side, carry out the step of thermal catalytic regeneration to the first part through filter screen clearance subassembly specifically includes:
when the first part is positioned on the regeneration side, the first part is heated to a preset temperature range through the heater, and air is sucked to the first part through the fan to perform regeneration.
Optionally, after the step of performing position exchange on the first portion and the second portion of the screen rotor to regenerate the first portion of the screen rotor by the screen cleaning assembly when the current concentration difference of the VOCs is less than or equal to the preset concentration difference, the method further includes:
and detecting the concentration of the current VOCs outside the first part, and stopping the operation of regenerating the first part when the concentration of the current VOCs is less than the preset purification concentration.
Optionally, the step of obtaining a current concentration difference of VOCs between an air inlet end and an air outlet end of the first portion of the screen rotor specifically includes:
detecting and acquiring a first VOCs concentration at an air inlet end of a first part of the filter screen rotor and a second VOCs concentration at an air outlet end of the first part;
and determining the concentration difference of the current VOCs according to the concentrations of the first VOCs and the second VOCs.
Optionally, the step of exchanging positions of the first part and the second part of the screen rotor specifically includes:
and controlling the first part and the second part to rotate around the same center according to a preset rotation angle so as to exchange the positions of the first part and the second part.
In addition, in order to achieve the above object, the present invention further provides a regeneration device for a VOCs adsorption screen, which is applied to an air treatment device, wherein the air treatment device includes a screen rotor, a first part of the screen rotor faces a purification side, a second part of the screen rotor faces a regeneration side, the regeneration side is provided with a screen cleaning assembly, and the purification side is the side of the air treatment device opposite to the outdoor direction;
the device comprises:
the parameter acquisition module is used for acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor;
and the filter screen regeneration module is used for exchanging the positions of the first part and the second part of the filter screen rotor when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, so that the filter screen rotor can be regenerated by the filter screen cleaning component.
In addition, to achieve the above object, the present invention further provides a terminal device, including: the device comprises a memory, a processor and a VOCs adsorption filter screen regeneration program which is stored on the memory and can run on the processor, wherein the VOCs adsorption filter screen regeneration program is configured to realize the steps of the VOCs adsorption filter screen regeneration method.
In addition, in order to achieve the above object, the present invention further provides a storage medium, wherein a program for regenerating a VOCs adsorption screen is stored in the storage medium, and when the program for regenerating a VOCs adsorption screen is executed by a processor, the steps of the method for regenerating a VOCs adsorption screen as described above are implemented.
According to the invention, the air treatment device comprises the filter screen rotor, the first part of the filter screen rotor faces the purification side, the second part of the filter screen rotor faces the regeneration side, the regeneration side is provided with the filter screen cleaning component, and the purification side is the side opposite to the outdoor direction on the air treatment device; acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor; when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, the first part and the second part of the filter screen rotor are subjected to position exchange, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning assembly. Through setting up the filter screen into rotor structure, detect the present saturation degree of absorption filter screen, when the current state of adsorbing the filter screen is for adsorbing saturation, carry out the position exchange with the part of saturation and unsaturated part to regenerate the saturation part, make the absorption filter screen can high-efficiently remove VOCs, regular automatic regeneration need not to change the filter screen, saves the later maintenance expense.
Drawings
Fig. 1 is a schematic structural diagram of a terminal device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for regenerating a VOCs adsorbent screen according to the present invention;
FIG. 3 is a schematic view of a filter rotor according to an embodiment of the method for regenerating a VOCs adsorption filter according to the present invention;
FIG. 4 is a schematic flow chart illustrating a second embodiment of a method for regenerating a VOCs adsorbent screen according to the present invention;
FIG. 5 is a schematic view of a sieve rotor according to a second embodiment of the method for regenerating a VOCs adsorbing sieve of the present invention;
FIG. 6 is a schematic flow chart illustrating a third embodiment of a method for regenerating a VOCs adsorbent screen according to the present invention;
FIG. 7 is a schematic view of a sieve rotor according to a third embodiment of the method for regenerating a VOCs adsorbing sieve of the present invention;
fig. 8 is a block diagram illustrating the structure of the first embodiment of the device for regenerating the adsorption screen of VOCs according to the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a terminal device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the terminal device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the terminal device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a VOCs adsorption screen regeneration program.
In the terminal device shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the terminal device of the present invention may be disposed in the terminal device, and the terminal device calls the VOCs adsorption screen regeneration program stored in the memory 1005 through the processor 1001 and executes the method for regenerating VOCs adsorption screens provided by the embodiment of the present invention.
An embodiment of the present invention provides a method for regenerating a VOCs adsorption filter, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of a method for regenerating a VOCs adsorption filter according to the present invention. Fig. 3 is a schematic view of a filter rotor according to an embodiment of the method for regenerating a VOCs adsorption filter of the present invention.
Be applied to air treatment facilities, air treatment facilities includes the filter screen rotor (refer to fig. 3), filter screen rotor's first part 1 is towards purifying the side, filter screen rotor's second part 2 is towards regeneration side, regeneration side is equipped with filter screen clearance subassembly, it does to purify the side one side relative with outdoor direction on the air treatment facilities.
In this embodiment, the method for regenerating the adsorption filter screen of the VOCs includes the following steps:
step S10: and acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor.
It should be noted that, in order to prevent the filter mesh absorbing VOCs from contacting with the filter mesh not absorbing saturated, which results in the contamination of the unsaturated filter mesh, referring to fig. 3, fig. 3 is a side view of the filter mesh rotor, in which the first part 1 and the second part 2 are two independent filter meshes. Further, in order to prevent pollution, a partition plate 5 is disposed between the first portion 1 and the second portion 2, the partition plate 5 may be a totally enclosed partition plate, a length of the partition plate 5 is equal to a length of the filter screen, a width of the partition plate 5 is equal to an inner diameter of the filter screen rotor, and a thickness of the partition plate 5 may be set according to an inner space of the filter screen rotor in a specific implementation.
A concentration sensor 3A, a concentration sensor 3B, and a concentration sensor 3C are also provided near the screen rotor. Concentration sensor 3A sets up in the outside of the part of screen rotor towards the purification side, concentration sensor 3B sets up in the inside of the part of screen rotor towards the purification side, concentration sensor 3C sets up the outside of the part of screen rotor towards the regeneration side.
Further, the step S10 specifically includes: detecting and acquiring a first VOCs concentration at an air inlet end of a first part of the filter screen rotor and a second VOCs concentration at an air outlet end of the first part; and determining the concentration difference of the current VOCs according to the concentrations of the first VOCs and the second VOCs.
The air inlet end and the air outlet end are determined by the air treatment mode of the air treatment device, for example: the air flow direction in the air treatment device is that the air enters from both ends of the part on the purifying side of the filter screen rotor (namely, the filter screen inner blank part in the side view in fig. 3), and is discharged from the inner side to the outer side of the filter screen, then, the concentration of the VOCs measured by the concentration sensor 3B is the first concentration of VOCs at the air inlet end, and the concentration of the VOCs measured by the concentration sensor 3A is the second concentration of VOCs at the air outlet end. For another example: the air flow direction in the air treatment device is entered from the outer side of the part on the purifying side of the filter screen rotor and then discharged from the two ends of the filter screen, and then the concentration of the VOCs measured by the concentration sensor 3A is the first concentration of the VOCs at the air inlet end, and the concentration of the VOCs measured by the concentration sensor 3B is the second concentration of the VOCs at the air outlet end.
It should be understood that since the air passes through the air inlet end to the air outlet end in a sequence such that the concentration of the accumulated adsorbate at the air inlet end is greater than the concentration at the air outlet end, the second concentration of VOCs is subtracted from the first concentration of VOCs to obtain a difference in VOCs concentration.
It is easy to understand that the screen rotor can be an activated carbon screen or a honeycomb with adsorption function.
Step S20: when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, the first part and the second part of the filter screen rotor are subjected to position exchange, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning assembly.
It should be noted that both ends (i.e., the side shown in the side view of fig. 3) of the first portion 1 and the second portion 2 may be clamped or fixed on a rotatable member, so that the member drives the screen rotor to rotate, so that the first portion and the second portion are exchanged in position. Wherein, filter screen clearance subassembly, each concentration sensor and baffle 5 maintain motionless when the first portion of filter screen rotor rotates with the second part, filter screen clearance subassembly, each concentration sensor and baffle 5 fixed setup.
It is easy to understand that, the purification side faces the indoor, when the adsorption of the part of the filter screen rotor on the purification side is close to saturation, the concentrations of the VOCs at the air inlet end and the air outlet end gradually approach, the current concentration difference gradually decreases, the preset concentration difference can be set to 0.1PPM, and when the current concentration difference is smaller than or equal to the value, the filter screen is partially saturated and needs to be regenerated.
Further, the step of exchanging the positions of the first part and the second part of the screen rotor specifically includes: and controlling the first part and the second part to rotate around the same center according to a preset rotation angle so as to exchange the positions of the first part and the second part.
It should be understood that, since the first portion 1 and the second portion 2 are arranged in a perfect circle around the same center, and can rotate around the same center, when the preset angle is 180 degrees, the positions of the first portion 1 and the second portion 2 are reversed. When the first section 1 is turned to the regeneration side, it may be regenerated by a screen cleaning assembly that heats and blows the first section so that the adsorbed VOCs are blown out of the chamber. The filter screen can be regenerated without replacing the filter screen.
Since the regeneration side and the purge side are separated by the partition, regeneration and purge can be performed simultaneously, and regeneration does not affect the performance of purge.
In this embodiment, through setting up the filter screen into the rotor structure, detect the current saturation degree of absorption filter screen, when the current state of absorption filter screen is for adsorbing saturation, carry out the position with the part of saturation and the part of unsaturated and exchange to regenerate the saturated part, make the absorption filter screen can high-efficiently remove VOCs, regular automatic regeneration need not to change the filter screen, saves the later maintenance expense.
Referring to fig. 4, fig. 4 is a schematic flow chart illustrating a second embodiment of a method for regenerating a filter screen for adsorbing VOCs according to the present invention. Referring to fig. 5, fig. 5 is a schematic view of a sieve rotor of a second embodiment of the method for regenerating a sieve for adsorbing VOCs according to the present invention; based on the first embodiment, the filter screen cleaning assembly of the present embodiment includes a heater 4 and a fan 6; wherein, heater 4 sets up at the filter screen rotor inboard, the air-out end orientation of fan heater 4 sets up. The step S20 specifically includes:
step S201: and when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, carrying out position exchange on the first part and the second part of the filter screen rotor.
It is easy to understand that the location conversion is performed based on the location exchange manner in the first embodiment, and details are not repeated in this embodiment.
In one embodiment, the screen rotor may be divided into more independent portions and more sides to prevent regeneration at a rate lower than the rate of cleaning. For example: the filter screen rotor comprises a regeneration side, a purification side and a standby side, wherein the filter screen rotor comprises three independent parts, namely a first part, a second part and a third part, the materials and the sizes of the parts are equal, in the specific implementation, the first part is regenerated on the regeneration side, the second part is positioned on the purification side for air purification, and the third part is an unsaturated filter screen and positioned on the standby side for rotating into the purification side; when the second part adsorbs saturation, if predetermine turned angle and be 120 degrees, the filter screen rotor rotates 120 degrees along purifying the side direction regeneration side for the initial position of second part is turned to the third part, purifies the side promptly, and the third part carries out the absorption purification function, and the initial position of first part is turned to the second part, regenerates the side promptly, and the second part is regenerated by hot catalysis, and the initial position of third part is turned to the first part, waits the machine side promptly, and the first part is unsaturated filter screen at present, carries out the standby. In the case of three independent filter screens, three partition plates are respectively disposed between the side and the side, the width of each partition plate is the radius of the filter screen rotor, and the included angle between adjacent partition plates is 120 degrees.
Step S202: when the first part is positioned at the regeneration side, the first part is heated to a preset temperature range through the heater, and the first part is blown through the fan to be regenerated.
It should be noted that the fan is located inside the filter, the predetermined temperature range may be 200 degrees celsius to 250 degrees celsius, and the filter material is catalyzed at this temperature range, which may effectively regenerate. And blowing with a fan to blow hot air to the current filter screen for regeneration, and discharging the waste air to the outside.
After step S20, the method further includes:
step S30: and detecting the concentration of the current VOCs outside the first part, and stopping the operation of regenerating the first part when the concentration of the current VOCs is less than the preset purification concentration.
It will be readily appreciated that the first portion is outboard, i.e. outboard of the screen on the regeneration side. In a specific implementation, the preset purification concentration may be set to 0.05ppm, and when the sensor outside the desorption regeneration end detects that the indication of the concentration of the VOCs is less than 0.05ppm, the regeneration is completed, and the regeneration operation is stopped. When the filter screen of the adsorption and purification end is saturated again, the regenerated filter screen can be transferred to the adsorption and purification end again through the rotor for adsorption and purification, and the filter screen with saturated adsorption is transferred to the outer side for adsorption and regeneration. With this circulation, guaranteed that the purification module keeps on purifying and need not to change the filter screen.
In this embodiment, through setting up the filter screen into the rotor structure, detect the current saturation degree of absorption filter screen, when the current state of absorption filter screen is for adsorbing saturation, carry out the position with the part of saturation and unsaturated part and exchange to set up fan and heater in regeneration side and carry out the thermal catalysis regeneration to the saturated part, make the absorption filter screen can high-efficiently remove VOCs, regular automatic regeneration need not to change the filter screen, saves the later maintenance expense.
Referring to fig. 6, fig. 6 is a schematic flow chart illustrating a third embodiment of the method for regenerating a VOCs adsorption screen according to the present invention; referring to fig. 7, fig. 7 is a schematic view of a sieve rotor of a third embodiment of the method for regenerating a sieve for adsorbing VOCs according to the present invention; the filter screen cleaning component comprises a heater 4 and a fan 6; the heater 4 is arranged on the inner side of the filter screen rotor, and the air inlet end of the fan 6 is arranged towards the outer side of the filter screen rotor; based on the first embodiment, after the step S201, the method for regenerating a VOCs adsorption screen of this embodiment further includes:
step S203: when the first part is positioned on the regeneration side, the first part is heated to a preset temperature range through the heater, and air is sucked to the first part through the fan to perform regeneration.
It should be noted that, referring to fig. 7, the fan 6 in fig. 7 is disposed outside the filter screen rotor, in this manner, the wind direction of the fan 6 faces the outdoor direction, and since the fan is disposed outward, the wind inlet end of the fan has a certain suction force, that is, the fan 6 draws air to the portion located on the regeneration side, so that the hot air is drawn to the current filter screen at the regeneration side to regenerate the current filter screen, and the exhaust gas is drawn to the outdoor for exhaust gas discharge.
It is easy to understand that the heating manner and the preset temperature range of the heater 4 are the same as those of the second embodiment, and are not described in detail here.
In this embodiment, through setting up the filter screen into the rotor structure, detect the current saturation degree of absorption filter screen, when the current state of absorption filter screen is for adsorbing saturation, carry out the position with the part of saturation and unsaturated part and exchange, and at the inside heater that sets up of filter screen rotor of regeneration side, the outside sets up the fan and carries out the thermal catalysis regeneration to the saturated part, makes the absorption filter screen can high-efficiently remove VOCs, regular automatic regeneration need not to change the filter screen, saves the later maintenance expense.
Referring to fig. 8, fig. 8 is a block diagram illustrating a first embodiment of a device for regenerating a VOCs adsorption screen according to the present invention.
Be applied to air treatment facilities, air treatment facilities includes the filter screen rotor (refer to fig. 3), filter screen rotor's first part 1 is towards purifying the side, filter screen rotor's second part 2 is towards regeneration side, regeneration side is equipped with filter screen clearance subassembly, it does to purify the side one side relative with outdoor direction on the air treatment facilities.
And the parameter obtaining module 10 is configured to obtain a current concentration difference of the VOCs between the air inlet end and the air outlet end of the first portion of the filter screen rotor.
It should be noted that, in order to prevent the filter mesh absorbing VOCs from contacting with the filter mesh not absorbing saturated, which results in the contamination of the unsaturated filter mesh, referring to fig. 3, fig. 3 is a side view of the filter mesh rotor, in which the first part 1 and the second part 2 are two independent filter meshes. Further, in order to prevent pollution, a partition plate 5 is disposed between the first portion 1 and the second portion 2, the partition plate 5 may be a totally enclosed partition plate, a length of the partition plate 5 is equal to a length of the screen, a width of the partition plate 5 is equal to an inner diameter of the screen rotor, and a thickness of the partition plate 5 may be set according to an inner space of the screen rotor in a specific implementation.
The VOCs adsorption screen regeneration device includes a concentration sensor 3A, a concentration sensor 3B, and a concentration sensor 3C. Concentration sensor 3A sets up in the outside of the part of screen rotor towards the purification side, concentration sensor 3B sets up in the inside of the part of screen rotor towards the purification side, concentration sensor 3C sets up the outside of the part of screen rotor towards the regeneration side.
Further, the parameter obtaining module 10 is further configured to detect and obtain a first VOCs concentration at an air inlet end of a first portion of the screen rotor and a second VOCs concentration at an air outlet end of the first portion; and determining the concentration difference of the current VOCs according to the concentrations of the first VOCs and the second VOCs.
The air inlet end and the air outlet end are determined by the air treatment mode of the air treatment device, for example: the air flow direction in the air treatment device is that the air enters from both ends of the part on the purifying side of the filter screen rotor (namely, the filter screen inner blank part in the side view in fig. 3), and is discharged from the inner side to the outer side of the filter screen, then, the concentration of the VOCs measured by the concentration sensor 3B is the first concentration of VOCs at the air inlet end, and the concentration of the VOCs measured by the concentration sensor 3A is the second concentration of VOCs at the air outlet end. For another example: the air flow in the air treatment device enters from the outer side of the part on the purifying side of the filter screen rotor and is discharged from the two ends of the filter screen, then, the concentration of the VOCs measured by the concentration sensor 3A is the first concentration of the VOCs at the air inlet end, and the concentration of the VOCs measured by the concentration sensor 3B is the second concentration of the VOCs at the air outlet end.
It should be understood that since the air passes through the air inlet end to the air outlet end in a sequence such that the concentration of the accumulated adsorbate at the air inlet end is greater than the concentration at the air outlet end, the second concentration of VOCs is subtracted from the first concentration of VOCs to obtain a difference in VOCs concentration.
It is easy to understand that the screen rotor can be an activated carbon screen or a honeycomb with adsorption function.
And the filter screen regeneration module 20 is used for exchanging the positions of the first part and the second part of the filter screen rotor when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning component.
It should be noted that both ends (i.e., the side shown in the side view of fig. 3) of the first portion 1 and the second portion 2 may be clamped or fixed on a rotatable member, so that the member drives the screen rotor to rotate, so that the first portion and the second portion are exchanged in position. Wherein, filter screen clearance subassembly, each concentration sensor and baffle 5 maintain motionless when the first portion of filter screen rotor rotates with the second part, filter screen clearance subassembly, each concentration sensor and baffle 5 fixed setup.
It is easy to understand that, the purification side faces the room, when the adsorption of the part of the sieve rotor on the purification side is close to saturation, the concentrations of VOCs at the air inlet end and the air outlet end are gradually close, the current concentration difference gradually decreases, the preset concentration difference can be set to 0.1PPM, and when the current concentration difference is smaller than or equal to the value, the sieve is partially saturated and needs to be regenerated.
Further, the step of exchanging the positions of the first part and the second part of the screen rotor specifically includes: and controlling the first part and the second part to rotate around the same center according to a preset rotation angle so as to exchange the positions of the first part and the second part.
It should be understood that, since the first portion 1 and the second portion 2 are arranged in a perfect circle around the same center, and can rotate around the same center, when the preset angle is 180 degrees, the positions of the first portion 1 and the second portion 2 are reversed. When the first section 1 is turned to the regeneration side, it may be regenerated by a screen cleaning assembly that heats and blows the first section so that the adsorbed VOCs are blown out of the chamber. The filter screen can be regenerated without replacing the filter screen.
Since the regeneration side and the purge side are separated by the partition, regeneration and purge can be performed simultaneously, and regeneration does not affect the performance of purge.
In this embodiment, through setting up the filter screen into the rotor structure, detect the current saturation degree of absorption filter screen, when the current state of absorption filter screen is for adsorbing saturation, carry out the position with the part of saturation and the part of unsaturated and exchange to regenerate the saturated part, make the absorption filter screen can high-efficiently remove VOCs, regular automatic regeneration need not to change the filter screen, saves the later maintenance expense.
In addition, an embodiment of the present invention further provides a storage medium, where a VOCs adsorption screen regeneration program is stored on the storage medium, and the processor executes the steps of the above-mentioned VOCs adsorption screen regeneration method.
Since the storage medium adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated herein.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in this embodiment may be referred to the method for regenerating the VOCs adsorption filter screen provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The method for regenerating the VOCs adsorption filter screen is characterized by being applied to an air treatment device, wherein the air treatment device comprises a filter screen rotor, a first part of the filter screen rotor faces a purification side, a second part of the filter screen rotor faces a regeneration side, the regeneration side is provided with a filter screen cleaning component, and the purification side is the side, opposite to the outdoor direction, of the air treatment device;
the method comprises the following steps:
acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor;
when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, the first part and the second part of the filter screen rotor are subjected to position exchange, so that the first part of the filter screen rotor is regenerated through the filter screen cleaning assembly.
2. The method according to claim 1, wherein the step of exchanging the positions of the first and second parts of the strainer rotor to regenerate the first part of the strainer rotor by the strainer cleaning assembly when the current concentration difference of the VOCs is less than or equal to a predetermined concentration difference specifically comprises:
when the concentration difference of the current VOCs is smaller than or equal to a preset concentration difference, performing position exchange on a first part and a second part of the filter screen rotor;
performing a thermocatalytic regeneration of the first portion by the screen cleaning assembly while the first portion is on a regeneration side.
3. The method of regenerating a VOCs adsorption screen of claim 2, wherein said screen cleaning assembly comprises a heater and a fan; the heater is arranged on the inner side of the filter screen rotor, and the air outlet end of the fan is arranged towards the heater;
when the first part is located the regeneration side, carry out the step of thermal catalytic regeneration to the first part through filter screen clearance subassembly specifically includes:
when the first part is positioned at the regeneration side, the first part is heated to a preset temperature range through the heater, and the first part is blown through the fan to be regenerated.
4. The method of regenerating a VOCs adsorption screen of claim 2, wherein said screen cleaning assembly comprises a heater and a fan; the heater is arranged on the inner side of the filter screen rotor, and the air inlet end of the fan is arranged towards the outer side of the filter screen rotor;
when the first part is located the regeneration side, carry out the step of thermal catalytic regeneration to the first part through filter screen clearance subassembly specifically includes:
when the first part is positioned on the regeneration side, the first part is heated to a preset temperature range through the heater, and air is sucked to the first part through the fan to perform regeneration.
5. The method for regenerating a VOCs adsorption screen of any one of claims 1 to 4, wherein after the step of interchanging the positions of the first and second portions of the screen rotor to regenerate the first portion of the screen rotor via the screen cleaning assembly when the current difference in VOCs concentration is equal to or less than a predetermined difference in concentration, the method further comprises:
and detecting the concentration of the current VOCs outside the first part, and stopping the operation of regenerating the first part when the concentration of the current VOCs is less than the preset purification concentration.
6. The method according to any one of claims 1 to 4, wherein the step of obtaining the current VOCs concentration difference between the inlet end and the outlet end of the first portion of the strainer rotor comprises:
detecting and acquiring a first VOCs concentration at an air inlet end of a first part of the filter screen rotor and a second VOCs concentration at an air outlet end of the first part;
and determining the concentration difference of the current VOCs according to the concentrations of the first VOCs and the second VOCs.
7. A method according to any one of claims 1 to 4, wherein the step of exchanging the position of the first and second portions of the screen rotor comprises:
and controlling the first part and the second part to rotate around the same center according to a preset rotation angle so as to exchange the positions of the first part and the second part.
8. A VOCs adsorbs filter screen regenerating unit, characterized by, is applied to the air treatment unit, the said air treatment unit includes the filter screen rotor, the first part of the said filter screen rotor is towards purifying the side, the second part of the said filter screen rotor is towards regenerating the side, the said regenerating side has filter screen cleaning assemblies, the said purifying side is the side opposite to outdoor direction on the said air treatment unit;
the device comprises:
the parameter acquisition module is used for acquiring the current VOCs concentration difference between the air inlet end and the air outlet end of the first part of the filter screen rotor;
and the filter screen regeneration module is used for exchanging the positions of the first part and the second part of the filter screen rotor when the concentration difference of the current VOCs is smaller than or equal to the preset concentration difference, so that the filter screen rotor can be regenerated by the filter screen cleaning component.
9. A terminal device, characterized in that the terminal device comprises: a memory, a processor, and a VOCs adsorption screen regeneration program stored on the memory and operable on the processor, the VOCs adsorption screen regeneration program configured to implement the steps of the VOCs adsorption screen regeneration method of any of claims 1-7.
10. A storage medium having stored thereon a program for regenerating a VOCs adsorption screen, the program for regenerating a VOCs adsorption screen being executed by a processor to perform the steps of the method for regenerating a VOCs adsorption screen according to any one of claims 1 to 7.
CN202011305576.0A 2020-11-19 2020-11-19 VOCs adsorption filter screen regeneration method, device, terminal equipment and storage medium Active CN114515495B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105435582A (en) * 2015-11-13 2016-03-30 青岛华世洁环保科技有限公司 Compound VOCs absorbing concentration turning wheel and use method thereof
CN109529530A (en) * 2019-01-10 2019-03-29 深圳市天得环境科技有限公司 Low concentration VOCs gas purge system and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105435582A (en) * 2015-11-13 2016-03-30 青岛华世洁环保科技有限公司 Compound VOCs absorbing concentration turning wheel and use method thereof
CN109529530A (en) * 2019-01-10 2019-03-29 深圳市天得环境科技有限公司 Low concentration VOCs gas purge system and method

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