CN118142317A - Filtering and adsorbing equipment and control method - Google Patents
Filtering and adsorbing equipment and control method Download PDFInfo
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- CN118142317A CN118142317A CN202410579321.5A CN202410579321A CN118142317A CN 118142317 A CN118142317 A CN 118142317A CN 202410579321 A CN202410579321 A CN 202410579321A CN 118142317 A CN118142317 A CN 118142317A
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- 238000001914 filtration Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001179 sorption measurement Methods 0.000 claims abstract description 184
- 239000000463 material Substances 0.000 claims abstract description 99
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 75
- 238000012546 transfer Methods 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- B01D53/30—Controlling by gas-analysis apparatus
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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
-
- 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
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention provides a filtering and adsorbing device and a control method, and belongs to the technical field of gas adsorption. The filtering and adsorbing equipment comprises a feeding hopper, a filtering and adsorbing device and a valve; one end of the feed hopper is provided with a feeding end, and the other end of the feed hopper is provided with a discharging end; the feed inlet of the filtering and adsorbing device is communicated with the discharge end through a first valve, and the discharge outlet of the filtering and adsorbing device is provided with a second valve; the valve is arranged in the filtering and adsorbing device to separate the filtering and adsorbing device into at least two filters; two adjacent filters are communicated through a connecting pipe, one end of the connecting pipe is communicated with the first air inlet pipe, and the other end of the connecting pipe is communicated with the first air outlet pipe so as to define an air flow channel. The filtering and adsorbing equipment provided by the invention not only improves the filtering and adsorbing quality of volatile organic compounds in gas, but also is convenient for replacing the filtering and adsorbing materials with saturated adsorption in the filter in time so as to ensure the stability of the filtering and adsorbing device.
Description
Technical Field
The invention relates to the technical field of gas adsorption, in particular to a filtering and adsorbing device and a control method.
Background
The emission of Volatile Organic Compounds (VOCs) is one of the main sources of atmospheric pollution. In the chemical industry production process, a lot of drying operations of solids containing Volatile Organic Compounds (VOCs) and moisture are involved, for example, a treatment process for removing water and Volatile Organic Compounds (VOCs) by using hot air or hot nitrogen as a drying medium is adopted, but the waste gas containing VOCs generated by the drying process must be treated to reach the standard before the waste gas can be discharged.
The traditional volatile organic compound purifying treatment device has the problems of complex process flow and high operation and maintenance cost, and the adsorption material is not easy to replace.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provides a filtering and adsorbing device and a control method thereof.
In a first aspect, the present invention provides a filtration adsorption apparatus comprising:
A feeding hopper, along a first direction, wherein one end of the feeding hopper is provided with a feeding end, and the other end of the feeding hopper is provided with a discharging end;
The feed inlet of the filtering and adsorbing device is communicated with the discharge end through a first valve, and the discharge outlet of the filtering and adsorbing device is provided with a second valve;
at least one valve disposed in the filter adsorption device along the first direction to separate the filter adsorption device into at least two filters;
along the second direction, two opposite sides of each filter are respectively provided with a first air inlet pipe and a first air outlet pipe;
Two adjacent filters are communicated through a connecting pipe, one end of the connecting pipe is communicated with the first air inlet pipe, and the other end of the connecting pipe is communicated with the first air outlet pipe so as to define an air flow channel;
The exhaust end of the air flow channel is arranged at one end of the filtering and adsorbing device, which is close to the first valve, and the air inlet end of the air flow channel is arranged at one end of the filtering and adsorbing device, which is close to the second valve;
The air inlet end is provided with a first detector, the air outlet end is provided with a second detector, and each connecting pipe is provided with a third detector;
The second direction is perpendicular to the first direction.
Further, the plurality of valves are arranged in the filtering and adsorbing device at intervals, so that the filtering and adsorbing device is separated to form a plurality of filters.
Further, along the first direction, the plurality of filters include a primary filter, a secondary filter … … N-stage filter connected in sequence;
the discharging end of the first-stage filter is connected with the second valve, and the feeding end of the N-stage filter is connected with the first valve.
Further, along the first direction, the plurality of valves includes a primary valve, a secondary valve … … n-stage valve;
wherein N and N satisfy a relation, n=n-1, and N is a positive integer.
Further, the filtering and adsorbing device comprises a body and an adsorbing material layer;
The body defines a receiving cavity, and the adsorbing material layer is filled in the receiving cavity.
Further, the volume of each of the filters is equal.
In a second aspect, the present invention provides a control method of a filtration and adsorption apparatus, using the filtration and adsorption apparatus, comprising the steps of:
Sequentially marking the filters as a primary filter and a secondary filter … … N-level filter along the direction of the second valve towards the first valve, and marking the valves as a primary valve and a secondary valve … … N-1-level valve;
Acquiring the concentration P1 of the volatile organic compounds detected by the first detector and the concentration P2 of the volatile organic compounds detected by a third detector close to the second valve, and judging whether the ratio between the P2 and the P1 is larger than a first preset value or not;
If yes, the second valve is opened, and after the adsorption material in the first-stage filter is completely discharged, the second valve is closed; and then transferring the adsorption material in the secondary filter to the primary filter, transferring the adsorption material in the N-stage filter to the N-1 stage filter, filling the adsorption material in the feed hopper to the N-stage filter through the first valve, and closing the first valve.
Further, the first preset value is x, wherein the value range of x is 0.8-1.
Further, the concentration P3 of the volatile organic compound detected by the second detector is obtained, and whether the concentration P3 reaches the emission standard is judged.
If not, the adsorption materials in the filters of all layers are replaced layer by layer from top to bottom.
Embodiments of the present invention have the following advantages: according to the filtering and adsorbing equipment provided by the invention, at least one valve is arranged in the filtering and adsorbing device so as to separate the filtering and adsorbing device into at least two filters, and adjacent filters are connected through the connecting pipe so as to form a multi-stage adsorption and filtering structure from bottom to top, so that the filtering and adsorbing quality and the filtering and adsorbing efficiency of volatile organic matters in gas are improved. Through being equipped with first detector at the inlet end of air current passageway, the exhaust end of air current passageway is equipped with the second detector, and every connecting pipe is equipped with the third detector, not only can realize the real-time supervision to the gaseous volatile organic compounds concentration in the gas after flowing through each level adsorption filter like this, but also can monitor whether the adsorption material in the adsorption filtration adsorption equipment of each level reaches the adsorption saturation state to make the staff can be timely change the filtration adsorption material that adsorbs the saturation in the filter, in order to guarantee to filter filtration adsorption quality and stability of adsorption equipment to volatile organic compounds in the gas.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a filter adsorption apparatus according to some embodiments of the present invention;
FIG. 2 illustrates a schematic diagram of another perspective of a filter adsorption apparatus according to some embodiments of the present invention;
fig. 3 illustrates a flow chart of a method of controlling a filter adsorption apparatus according to some embodiments of the present invention.
Description of main reference numerals:
100-feeding hopper; 200-filtering and adsorbing device; 300-a first valve; 400-a second valve; 210-a filter; 211-a first stage filter; 212-a two-stage filter; 213-three stage filter; 214-a four-stage filter; 220-a first air inlet pipe; 230-a first air outlet pipe; 500-connecting pipes; 600-a first detector; 700-a second detector; 800-a third detector; 900-valve; 910-primary valve; 920-two-stage valve; 930-three stage valve.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, some embodiments of the present invention provide a filtering and adsorbing device, which is mainly applied to filtering and adsorbing volatile organic compounds in air, so as to improve the adsorption quality and adsorption efficiency of the volatile organic compounds and reduce the operation cost of the filtering and adsorbing device.
The filter adsorption apparatus includes a feed hopper 100, a filter adsorption device 200, a valve 900, a first detector 600, a second detector 700, and a third detector 800.
Along the first direction, one end of the feed hopper 100 is provided with a feeding end, so that an external adsorption material can be fed into the feed hopper 100 through the feeding end, and in addition, the other end of the feed hopper 100 is provided with a discharging end, and it can be understood that the adsorption material entering the feed hopper 100 can be discharged through the discharging end.
The first direction refers to the vertical direction. Specifically, the first direction refers to the axial direction of the filter adsorption device 200, that is, the axial direction of the filter adsorption device 200 is parallel to the vertical direction.
The filter and adsorption device 200, wherein the feed inlet of the filter and adsorption device 200 is communicated with the feed hopper 100 through a first valve 300, so that the filter and adsorption material in the feed hopper 100 can enter the filter and adsorption device 200 through the first valve 300. Meanwhile, the filter adsorption material in the feed hopper 100 can be blocked and limited through the first valve 300, namely, the filter adsorption material in the feed hopper 100 can be prevented from falling into the filter adsorption device 200 by blocking between the feed hopper 100 and the filter adsorption device 200 through the first valve 300.
Illustratively, when the first valve 300 is opened, the adsorbent material located in the feed hopper 100 is able to enter the filter adsorbent device 200 from the outlet of the feed hopper 100; when the first valve 300 is closed, i.e. the first valve 300 forms a blocking effect on the adsorption material in the feed hopper 100, the filtration adsorption material in the feed hopper 100 is prevented from entering the filtration adsorption device 200.
In this embodiment, the filtering and adsorbing device 200 can adsorb volatile organic compounds in the gas, so as to reduce the concentration of organic components in the gas and improve the purification efficiency.
In addition, a second valve 400 is provided at the outlet of the filter and adsorption device 200 to control the adsorption material in the filter and adsorption device 200 through the second valve 400, that is, the second valve 400 can form a blocking effect on the adsorption material in the filter and adsorption device 200. In addition, the adsorption material in the filter adsorption device 200 can be discharged through the second valve 400, thereby facilitating replacement of the adsorption material in the filter adsorption device 200.
Illustratively, after the adsorption of the volatile organic compounds in the gas by the adsorption material in the filter and adsorption device 200 is completed, the adsorption material is replaced by opening the second valve 400 and discharging the adsorption material having the volatile organic compounds adsorbed thereon, so that the stability and adsorption quality of the adsorption of the volatile organic compounds by the filter and adsorption device 200 can be ensured, and the filtration quality of the volatile organic compounds can be improved.
Further, a plurality of valves 900 are disposed in the filter adsorption device 200 at intervals along the first direction to partition the filter adsorption device 200 into N-stage filters 210. It is understood that the number of the valves 900 may be one, two or more than two, and may be specifically set according to practical situations.
Illustratively, if the valve 900 is provided in the filter adsorption apparatus 200, the two-stage filter 212 is formed by dividing the filter adsorption apparatus 200 by the valve 900; if there are two valves 900, the two valves 900 are spaced apart in the filter adsorption device 200 to separate the filter adsorption device 200 into three stages of filters 213; if there are a plurality of valves 900, the plurality of valves 900 are spaced apart in the filter adsorption apparatus 200 to separate the filter adsorption apparatus 200 into the multi-stage filter 210. The two-stage filter 212, the three-stage filter 213, and the multi-stage filter 210 described herein refer to a filtration stage for volatile organic compounds in a gas.
That is, the gas can be subjected to two-stage filtration by the two-stage filter 212, three-stage filtration by the three-stage filter 213, and multi-stage filtration by the multi-stage filter 210. It can be appreciated that by increasing the number of filtration stages in the filter and adsorption device 200, the quality of filtering the volatile organic compounds in the gas can be improved, thereby ensuring that the gas filtered by the filter and adsorption device 200 reaches the emission standard.
Along the second direction, the two opposite sides of the filter 210 in each stage are respectively provided with a first air inlet pipe 220 and a first air outlet pipe 230, so that the gas can enter the filter 210 through the first air inlet pipe 220, and the volatile organic compounds in the gas are adsorbed and filtered by the filtering adsorption material in the filter 210 and then discharged through the first air outlet pipe 230.
It should be noted that the second direction herein refers to a horizontal direction, i.e., a direction in which the gas flows through the filter 210. The second direction is perpendicular to the first direction.
Specifically, two adjacent filters 210 are connected to each other through a connection pipe 500. Specifically, one end of the connection pipe 500 is connected to the first air inlet pipe 220, and the other end of the connection pipe 500 is connected to the first air outlet pipe 230 to define an air flow passage.
It is understood that the airflow passage is an S-shaped airflow passage, a curved airflow passage, or a wavy airflow passage.
In addition, the exhaust end of the air flow channel is disposed at one end of the filtering and adsorbing device 200 near the first valve 300, and the air inlet end of the air flow channel is disposed at one end of the filtering and adsorbing device 200 near the second valve 400, so as to limit the filtering and adsorbing device 200 to form a bottom-up adsorption and filtration structure, so as to improve the filtering and adsorption quality of volatile organic compounds in the gas.
Further, in this embodiment, the air inlet end is provided with a first detector 600, so that the concentration of volatile organic compounds in the air is detected by the first detector 600 before the air enters the filter and absorber device 200. Wherein, be equipped with the second detector 700 in the exhaust end, detect through the second detector 700 and adsorb in the gas after filtering through filtration adsorption equipment 200, each connecting pipe 500 is equipped with third detector 800 to detect through third detector 800 in the gas after the filter 210 adsorption filtration of each level, volatile organic matter's concentration, so not only can realize the real-time supervision to the gas after the filter 210 of each level flows through, but also can monitor whether the adsorption material in each level adsorption filtration adsorption equipment 200 reaches the adsorption saturation state, thereby make the staff can in time change the filtration adsorption material that adsorbs saturation in the filter 210, in order to guarantee filtration adsorption equipment 200 to the filtration adsorption quality and the stability of volatile organic matter in the gas.
In this embodiment, the number of the valves 900 is plural, and the plural valves 900 are disposed in the filter and adsorption device 200 at intervals to partition the filter and adsorption device 200 into plural filters 210. It is understood that the number of the valves 900 and the number of the filters 210 may be two or more of any number, and may be specifically set according to practical situations.
As shown in fig. 1 and 2, in the present embodiment, the number of valves 900 is three, and the number of filters 210 is four.
Specifically, the plurality of valves 900 provided in the filter adsorption apparatus 200 are sequentially set as the first-stage valve 910 and the second-stage valve 920 … … n-stage valve 900 in the direction of the second valve 400 toward the first valve 300. The plurality of filters 210 are sequentially set as a primary filter 211 and a secondary filter 212 … … N-stage filter 210 along the direction of the second valve 400 toward the first valve 300, where N and N satisfy the relation, n=n+1, and N is a positive integer. It will be appreciated that the discharge end of the primary filter 211 is connected to the second valve 400, and the feed end of the N-stage filter 210 is connected to the first valve 300.
Meanwhile, the connection pipe 500 connecting the primary filter 211 and the secondary filter 212 is defined as a primary connection pipe, the connection pipe 500 connecting the secondary filter 212 and the tertiary filter 213 is defined as a secondary connection pipe, the connection pipe 500 connecting the tertiary filter 213 and the quaternary filter 214 is defined as a tertiary connection pipe, and the connection pipe 500 connecting the N-1 stage filter 210 and the N-stage filter 210 is defined as an N-1 stage connection pipe.
Specifically, the gas enters the first filter 211 through the first air inlet pipe 220 of the first filter 211 at the air inlet end of the air flow channel, and part of volatile organic compounds in the gas is adsorbed and filtered by the filter adsorption material in the first filter 211, and the gas after being adsorbed and filtered by the first filter 211 is discharged into the first connecting pipe through the first air outlet pipe 230 of the first filter 211.
Then, the gas filtered by the primary filter 211 is discharged into the secondary filter 212 through the primary connection pipe through the first gas inlet pipe 220 of the secondary filter 212, volatile organic compounds in the gas are adsorbed and filtered through the adsorption material in the secondary filter 212, and the gas adsorbed and filtered through the secondary filter 212 is discharged into the secondary connection pipe through the first gas outlet pipe 230 of the secondary filter 212.
Again, the gas filtered by the secondary filter 212 is discharged into the tertiary filter 213 through the secondary connection pipe through the first gas inlet pipe 220 of the tertiary filter 213, and volatile organic compounds in the gas are adsorbed and filtered through the adsorption material in the tertiary filter 213, and the gas adsorbed and filtered through the tertiary filter 213 is discharged into the tertiary connection pipe through the first gas outlet pipe 230 of the tertiary filter 213.
In addition, the gas filtered by the N-1 stage filter 210 is discharged into the N stage filter 210 through the N-1 stage connection pipe 500 through the first gas inlet pipe 220 of the N stage filter 210, volatile organic compounds in the gas are adsorbed and filtered through the adsorption material in the N stage filter 210, and the gas filtered through the N stage filter 210 is discharged through the first gas outlet pipe 230 of the N stage filter 210, so that the N stage adsorption and filtration of the gas from bottom to top is realized through the filter and adsorber 200, the adsorption and filtration efficiency and quality of volatile organic compounds in the gas are improved, and the gas filtered through the filter and adsorber 200 is ensured to reach the emission standard.
It should be noted that, in the present invention, the first air outlet pipe 230 of the N-stage filter 210 is an air outlet end in the air flow channel, and the first air inlet pipe 220 of the first stage filter 211 is an air inlet end in the air flow channel.
By arranging the valve 900 between the adjacent filters 210, a limiting effect is formed on the gas flowing through the filters 210 by the valve 900, so that the stability and smoothness of the gas flowing in the second direction in the filters 210 are ensured, and meanwhile, the gas flowing through the primary filter 211 can be prevented from entering the secondary filter 212 through the primary valve 910, so that the uniformity and accuracy of the filtering amount of the gas by each primary filter 211 are ensured.
Further, if the adsorption material in the first filter 211 is saturated to adsorb volatile organic compounds in the gas, the second valve 400 is opened, so that the adsorption material in the first filter 211 is completely discharged from the second valve 400, and then the second valve 400 is closed. Then, the valve 900 between the primary filter 211 and the secondary filter 212 is opened, so that the valve 900 is closed after the adsorption material in the secondary filter 212 is completely discharged into the primary filter 211 through the valve 900. Then, the valve 900 between the secondary filter 212 and the tertiary filter 213 is opened, so that the valve 900 is closed after the adsorption material in the tertiary filter 213 is completely discharged into the secondary filter 212 through the valve 900. Again, valve 900 is opened between N-1 stage filter 210 and N-stage filter 210 such that after the adsorbent material in N-stage filter 210 is completely discharged into N-1 stage filter 210 through valve 900, valve 900 is closed. Finally, the first valve 300 is opened, and after the adsorption material in the feed hopper 100 is discharged into the N-stage filter 210 through the first valve 300, the first valve 300 is closed, thereby completing the sequential replacement of the adsorption material in the N-stage filter 210 into the N-1 stage filter 210. That is, the filter adsorption material in the filter adsorption device 200 is replaced from top to bottom, so that not only the stability of the filter adsorption device 200 to the filter adsorption of the volatile organic compounds in the gas can be ensured, but also the utilization rate of the adsorption material can be improved.
Specifically, the volumes of each of the filters 211 are equal, so that the adsorption material in the N-stage filter 210 can be completely replaced into the N-1 stage filter 210, thereby ensuring the quality of adsorption filtration of the gas by each of the filters 211.
As shown in fig. 1, in some embodiments of the present invention, the caliber of the first air inlet pipe 220 is equal to the caliber of the first air outlet pipe 230, so that the flow rate of the air entering the filter 210 through the first air inlet pipe 220 is equal to the flow rate of the air discharged from the first air outlet pipe, and the smoothness and stability of the air flowing in the filter 210 are ensured.
In some embodiments of the invention, the filter adsorbent device 200 includes a body and an adsorbent material layer.
The body is provided with a containing cavity, and the adsorbing material layer is filled in the containing cavity so as to adsorb and filter volatile organic compounds in gas through the adsorbing material layer.
Along the second direction, the two opposite sides of the body are respectively provided with an air inlet and an air outlet, and the two opposite sides of the body are respectively provided with a connecting net so as to form a blocking and limiting effect on the adsorption material layer in the accommodating cavity through the connecting net, so that the adsorption material layer in the accommodating cavity is prevented from leaking from the air inlet or the air outlet, and the stability of the adsorption material layer in the accommodating cavity is ensured. Meanwhile, the connecting nets are arranged on two opposite sides of the body, so that gas can enter the accommodating cavity through gaps in the connecting nets, and the gas is adsorbed and filtered through the adsorption material layer in the accommodating cavity, so that the smoothness of the gas flowing in the filtering and adsorbing device 200 can be guaranteed.
As shown in fig. 3, some embodiments of the present invention provide a control method of a filtration and adsorption apparatus, using the filtration and adsorption apparatus described in any of the above embodiments, the control method including the steps of:
In step S100, the filters are sequentially marked as a primary filter and a secondary filter … … N-stage filter along the direction of the second valve towards the first valve, and the valves are marked as a primary valve and a secondary valve … … N-1-stage valve.
Specifically, the plurality of filters 210 are labeled as a primary filter 211, a secondary filter 212 … … N-stage filter in sequence along the direction of the second valve 400 toward the first valve 300, i.e., from the direction of the second valve 400 toward the first valve 300. Meanwhile, the plurality of valves 900 are labeled as primary valve 910, secondary valve 920 … … N-1.
It will be appreciated that if the valve 900 is one, the filter 210 is a two-stage filter; if there are N-1 valves 900, then there are N filters 210, i.e., N stage filters. If the number of valves 900 is three, then the N-1 stage valve is the three stage valve 930.
Step S200, the concentration P1 of the volatile organic compounds detected by the first detector and the concentration P2 of the volatile organic compounds detected by the third detector close to the second valve are obtained, and whether the ratio between P2 and P1 is larger than a first preset value is judged.
Specifically, since the first detector 600 is disposed at the air inlet end of the air flow channel, that is, the first detector 600 detects the concentration of the volatile organic compounds in the air before the air enters the filtering and adsorbing device 200, that is, the concentration of the volatile organic compounds in the air before the air is filtered is obtained.
In addition, the acquisition of the concentration P2 of the volatile organic compound detected by the third detector 800 close to the second valve 400 means: the concentration of the volatile organic compounds in the gas is obtained after the gas is filtered by adsorption through the primary adsorption filter 210.
By determining whether the ratio between P2 and P1 is greater than the first preset value, it can be determined whether the adsorption material in the primary adsorption filter 210 is saturated with the volatile organic compounds.
Step S300, if yes, the second valve is opened, and after the adsorption material in the first-stage filter is completely discharged, the second valve is closed; and then transferring the adsorption material in the secondary filter to the primary filter, transferring the adsorption material in the N-stage filter to the N-1 stage filter, filling the adsorption material in the feed hopper to the N-stage filter through the first valve, and closing the first valve.
Specifically, if the ratio between P2 and P1 is greater than the first preset value, it indicates that the value of P1 is very close to or equal to the value of P2, that is, the concentration of the gas entering the first filter 211 is very close to the concentration of the gas after being filtered and adsorbed by the first filter 211. At this time, it can be considered that the adsorption material in the primary filter 211 is saturated with the volatile organic compounds in the gas, that is, the adsorption material in the primary filter 211 can not adsorb and filter the volatile organic compounds in the gas. Accordingly, the second valve 400 is opened so that the adsorption material in the first filter 211 is discharged through the second valve 400.
When the adsorption saturated adsorption material in the primary filter 211 is discharged from the second valve 400, the second valve 400 is closed, and then the primary valve 910 is opened, so that the adsorption material in the secondary filter 212 is completely discharged to the primary filter 211 through the primary valve 910, and then the primary valve 910 is closed, thereby completing the transfer of the adsorption material in the secondary filter 212 to the primary filter 211.
Then, the secondary valve 920 is opened so that the adsorption material in the tertiary filter 213 is completely discharged to the secondary filter 212 through the secondary valve 920, and then the secondary valve 920 is closed, thereby completing the transfer of the adsorption material in the tertiary filter 213 to the secondary filter 212.
Again, the N-1 stage valve 900 is opened, and after the adsorption material in the N-stage filter 210 is completely discharged into the N-1 stage filter 210, the N-1 stage valve 900 is closed, thereby completing the transfer of the adsorption material in the N-stage filter 210 into the N-1 stage filter 210.
Finally, the first valve 300 is opened, so that after the adsorption material in the feed hopper 100 is discharged to the N-stage filter 210 through the first valve 300, the first valve 300 is closed, so that the sequential transfer of the adsorption material in the feed hopper 100, the N-stage filter 210 … …, the two-stage filter 212 and the one-stage filter 211 in the first direction is realized, the stability of adsorption and filtration of the volatile organic compounds in the gas by the filtering and adsorbing device 200 can be ensured, and the utilization rate of the adsorption material in the filtering and adsorbing device 200 can be improved.
Step S400, if not, the filter adsorption device 200 maintains the current operation state.
Specifically, if the ratio between P2 and P1 is greater than the first preset value, that is, the difference between the concentration of the gas before entering the primary filter 211 and the concentration of the gas after being filtered and adsorbed by the primary filter 211 is large. At this time, it is considered that the adsorption material in the first filter 211 does not reach a saturated state for adsorbing the volatile organic compounds in the gas, and the filtering capability for the volatile organic compounds in the gas is strong, that is, the adsorption material in the first filter 211 can adsorb and filter the volatile organic compounds in the gas. Thus, the first valve 300, the valve 900 and the second valve 400 are all kept closed, so that the filter adsorption device 200 maintains the current filter adsorption state, i.e., without the need to replace the adsorption material in the filter.
In some embodiments of the present invention, a progressive replacement design concept is adopted, so that the adsorption material in the primary filter 211 is ensured to be saturated or even supersaturated and is discharged by replacement, the utilization rate of the adsorption material is maximized, the regeneration frequency is reduced, and the system operation cost is reduced.
In some embodiments of the present invention, the first preset value is x, where x is 0.8+.x < 1. Referring to fig. 1, the gas concentration of the first gas inlet pipe 220 is P1, the gas concentration of the first gas outlet pipe 230 is P2, and P2 is smaller than P1.
For example, if the adsorption material in the primary filter 211 is saturated, it can be understood that the inlet concentration and the outlet concentration of the primary filter 211 are equal, that is, p1=p2, and the ratio between P2 and P1 is equal to 1.
Also for example: if the adsorption material in the primary filter 211 is very close to saturation and reaches at least 80% of adsorption saturation, then the adsorption material in the primary filter 211 may be regarded as adsorption saturation, i.e., p2=0.8p1, which corresponds to a ratio of P2 to P1, x=0.8.
That is, when the concentration P2 of the volatile organic compounds in the gas in the exhaust pipe (i.e., the first outlet pipe 230) of the primary filter 211 detected by the third detector 800 is greater than or equal to 80% of the concentration P1 of the volatile organic compounds in the gas in the exhaust pipe (i.e., the first inlet pipe 220) of the primary filter 211, the adsorption material in the primary filter 211 is considered to reach the adsorption saturation state, and at this time, the adsorption material in each layer of filter is replaced layer by layer from top to bottom.
Specifically, as shown in fig. 1, in this embodiment, a four-stage filter structure is taken as an example for the following specific description.
The specific means that the layer-by-layer replacement of the adsorption material in each layer of the filter from top to bottom is: the first valve 300 is opened to discharge the adsorption saturated adsorption material in the first filter 211 from the first valve 300, and when the first filter 211 is discharged, the first valve 300 is closed; the primary valve 910 is opened, and at this time, the secondary valve 920 is closed, so that the adsorption material in the secondary filter 212 is completely discharged into the primary filter 211 through the primary valve 910, and then the primary valve 910 is closed, thereby completing the transfer of the adsorption material in the secondary filter 212 into the primary filter 211.
Then, the secondary valve 920 is opened, and at this time, the tertiary valve 930 is in a closed state, so that after the adsorption material in the tertiary filter 213 is completely discharged to the secondary filter 212 through the secondary valve 920, the secondary valve 920 is closed, thereby completing the transfer of the adsorption material in the tertiary filter 213 to the secondary filter 212.
Next, the tertiary valve 930 is opened, and at this time, the second valve 400 is closed, so that the adsorption material in the quaternary filter 214 is completely discharged to the tertiary filter 213 through the tertiary valve 930, and then the tertiary valve 930 is closed, thereby completing the transfer of the adsorption material in the quaternary filter 214 to the tertiary filter 213.
Finally, the second valve 400 is opened, and at this time, the third-stage valve 930 is closed, so that the second valve 400 is closed after the adsorption material in the feed hopper 100 is completely discharged to the fourth-stage filter 214 through the second valve 400, thereby completing the transfer of the adsorption material in the feed hopper 100 to the fourth-stage filter 214. Thereby completing the gradual replacement of the adsorption materials in each layer of filter from top to bottom.
In some embodiments of the invention, the control method further comprises the steps of: the concentration P3 of the volatile organic compound detected by the second detector 700 is acquired, and it is determined whether P3 meets the emission standard.
Specifically, since the second detector 700 is disposed at the outlet end of the gas flow passage, the second detector 700 detects the concentration of the volatile organic compounds in the filtered gas adsorbed by the filter adsorption device 200. And judges whether P3 meets the discharge standard, that is, whether the gas filtered by the filter adsorption device 200 meets the discharge standard.
If the concentration of P3 meets the emission criteria, no displacement of the adsorbent material in the filter is required.
If the concentration of P3 does not meet the emission standard, that is, the concentration of volatile organic compounds in the gas is still higher, that is, the adsorption capacity of the adsorption material in the filter to the volatile organic compounds in the gas is insufficient, the adsorption material in each layer of filter needs to be replaced layer by layer from top to bottom, so as to ensure that the gas after being adsorbed and filtered by the filtering and adsorbing device 200 reaches the emission standard.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (10)
1. A filter adsorption apparatus, comprising:
A feeding hopper, along a first direction, wherein one end of the feeding hopper is provided with a feeding end, and the other end of the feeding hopper is provided with a discharging end;
The feed inlet of the filtering and adsorbing device is communicated with the discharge end through a first valve, and the discharge outlet of the filtering and adsorbing device is provided with a second valve;
at least one valve disposed in the filter adsorption device along the first direction to separate the filter adsorption device into at least two filters;
along the second direction, two opposite sides of each filter are respectively provided with a first air inlet pipe and a first air outlet pipe;
Two adjacent filters are communicated through a connecting pipe, one end of the connecting pipe is communicated with the first air inlet pipe, and the other end of the connecting pipe is communicated with the first air outlet pipe so as to define an air flow channel;
The exhaust end of the air flow channel is arranged at one end of the filtering and adsorbing device, which is close to the first valve, and the air inlet end of the air flow channel is arranged at one end of the filtering and adsorbing device, which is close to the second valve;
The air inlet end is provided with a first detector, the air outlet end is provided with a second detector, and each connecting pipe is provided with a third detector;
The second direction is perpendicular to the first direction.
2. The filter and absorber apparatus of claim 1 wherein said plurality of valves are spaced apart in said filter and absorber means to separate said filter and absorber means into a plurality of said filters.
3. The filter and adsorption apparatus of claim 2 wherein, in the first direction, the plurality of filters comprises a primary filter, a secondary filter … … N-stage filter connected in sequence;
the discharging end of the first-stage filter is connected with the second valve, and the feeding end of the N-stage filter is connected with the first valve.
4. The filter and adsorption apparatus of claim 3 wherein in said first direction a plurality of said valves comprises a primary valve, a secondary valve … … n stages of valves;
wherein N and N satisfy a relation, n=n-1, and N is a positive integer.
5. The filtration and adsorption apparatus of any one of claims 1 to 4, wherein the filtration and adsorption device comprises a body and a layer of adsorption material;
The body defines a receiving cavity, and the adsorbing material layer is filled in the receiving cavity.
6. The filter and adsorption apparatus of claim 1 wherein the volume of each of the filters is equal.
7. A control method of a filtration and adsorption apparatus, characterized by using the filtration and adsorption apparatus according to any one of claims 1 to 6, comprising the steps of:
Sequentially marking the filters as a primary filter and a secondary filter … … N-level filter along the direction of the second valve towards the first valve, and marking the valves as a primary valve and a secondary valve … … N-1-level valve;
Acquiring the concentration P1 of the volatile organic compounds detected by the first detector and the concentration P2 of the volatile organic compounds detected by a third detector close to the second valve, and judging whether the ratio between the P2 and the P1 is larger than a first preset value or not;
If yes, the second valve is opened, and after the adsorption material in the first-stage filter is completely discharged, the second valve is closed; and then transferring the adsorption material in the secondary filter to the primary filter, transferring the adsorption material in the N-stage filter to the N-1 stage filter, filling the adsorption material in the feed hopper to the N-stage filter through the first valve, and closing the first valve.
8. The method according to claim 7, wherein the first preset value is x, and wherein x is 0.8.ltoreq.x < 1.
9. The method according to claim 7, wherein the concentration P3 of the volatile organic compound detected by the second detector is obtained, and it is determined whether or not the concentration P3 meets the emission standard.
10. The method according to claim 9, wherein if not, the adsorption material in each layer of the filter is replaced layer by layer from top to bottom.
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