CN114950065A - Waste gas concentration adjusting device - Google Patents
Waste gas concentration adjusting device Download PDFInfo
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- CN114950065A CN114950065A CN202210669729.2A CN202210669729A CN114950065A CN 114950065 A CN114950065 A CN 114950065A CN 202210669729 A CN202210669729 A CN 202210669729A CN 114950065 A CN114950065 A CN 114950065A
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- air duct
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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
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- 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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a waste gas concentration adjusting device, comprising: a housing having an inlet duct and an outlet duct; the adsorption body is arranged in the shell and is provided with a first flow passage and a second flow passage which are separated from each other; a control valve for controlling the flow of the exhaust gas into the first flow passage and/or the second flow passage; and the heater is used for heating at least part of the exhaust gas of the second flow passage. The exhaust gas concentration adjusting device can better achieve the effects of peak clipping and valley flattening, can maintain the concentration of organic matters in the exhaust gas discharged from the outlet air duct within a relatively stable set interval, has more working modes, and can reduce energy consumption.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas concentration adjusting device.
Background
In the injection molding field, a large amount of waste gas containing high-concentration organic matters is generated at the moment of mold opening, while the waste gas in other production time only contains low-concentration organic matters, but the waste gas containing the organic matters in the whole production process needs to be treated according to the requirement of environmental protection.
In the face of the scene with large concentration fluctuation of organic matters (the concentration of the organic matters can be hundreds of times of the concentration of the organic matters when the concentration of the organic matters is high), the type selection of the waste gas treatment equipment has great difficulty, if the type selection is carried out according to the index when the concentration of the organic matters is high, the purification requirement when the concentration of the organic matters is high can be met, but the configuration of the waste gas with low concentration generated in other production time is too high, and the problems of high energy and low efficiency of equipment operation exist. If the model is selected according to the low concentration index, the purification requirement of instantaneous high concentration cannot be met.
Disclosure of Invention
The invention aims to provide an exhaust gas concentration adjusting device which can better achieve the effect of peak clipping and valley flattening, can maintain the concentration of organic matters in exhaust gas discharged from an outlet air duct in a relatively stable set interval, has more working modes and can reduce energy consumption.
In order to solve the above technical problem, the present invention provides an exhaust gas concentration adjusting apparatus, including: a housing having an inlet duct and an outlet duct; the adsorption body is arranged in the shell and is provided with a first flow passage and a second flow passage which are separated from each other; a control valve for controlling the flow of the exhaust gas into the first flow passage and/or the second flow passage; and the heater is used for heating at least part of the exhaust gas of the second flow passage.
In a specific practice, when the concentration of the organic matters in the exhaust gas generated by the upstream production equipment is high, the exhaust gas can be selectively introduced into the first flow passage and/or the second flow passage through the control valve, so that the organic matters in the exhaust gas can be adsorbed by the adsorbent, and the concentration of the organic matters in the exhaust gas can be reduced; when the concentration of organic matter is lower in the upstream production equipment, the heater can be started to heat the waste gas entering a part of second flow channels or all the second flow channels, so that the whole adsorbent is heated, the organic matter adsorbed by the adsorbent can be desorbed, and the concentration of the organic matter in the waste gas can be improved. Therefore, the peak clipping and valley flattening effects can be well achieved, and the concentration of organic matters in the exhaust gas discharged from the outlet air duct can be maintained in a relatively stable set interval.
More importantly, the adsorbent in the embodiment of the invention is provided with the first flow passage and the second flow passage which are separated from each other, and the arrangement of the two flow passages and the control valve can provide more operation modes for the exhaust gas concentration regulating device so as to better adapt to the situation that the concentration of organic matters in the exhaust gas generated by upstream production equipment is complicated and variable.
In addition, in the embodiment of the invention, only the exhaust gas entering a part or all of the second flow passage is heated, and the exhaust gas entering the first flow passage is not heated. Therefore, when the waste gas is introduced into the two flow channels simultaneously, the amount of the waste gas to be heated can be relatively less, the pressure of the heater can be reduced, and the energy consumption can be reduced.
Optionally, in the extending direction of the first flow channel, the adsorbent comprises several subsections; the air conditioner further comprises a switching air channel, and the second flow channels of the branches are communicated through the switching air channel.
Optionally, the first flow channel forms a first flow path, and the second flow channel and the transition duct of each of the sections combine to form a second flow path having a greater flow resistance than the first flow path.
Optionally, the number of the switching air ducts is more than two, and the heater is arranged in at least one of the switching air ducts.
Optionally, the number of the sections is more than three, and the second flow passages of two adjacent sections are connected through the transfer air duct.
Optionally, the air conditioner further comprises a cover body, wherein the cover body covers one side of the two adjacent branches in the extending direction of the second flow passage, and the cover body and the two adjacent branches enclose to form the switching air duct.
Optionally, a first air duct and a second air duct are formed in the housing, the first air duct and the second air duct are respectively located at two sides of the first flow passage, the first air duct and the second air duct are both communicated with the first flow passage, and the second air duct can be communicated with the outlet air duct; the switch valve is used for controlling the communication state of the first air duct and the inlet air duct.
Optionally, a third air duct and a fourth air duct are further formed in the housing, the third air duct and the fourth air duct are respectively located at two sides of the second flow passage in the extending direction, the third air duct and the fourth air duct are both communicated with the second flow passage, and the fourth air duct is communicated with the outlet air duct; the switch valve is also used for controlling the communication state of the third air duct and the inlet air duct.
Optionally, the second air duct and the fourth air duct are in communication.
Optionally, the switch valve is further configured to control a communication state between the second air duct and the inlet air duct, a communication state between the second air duct and the outlet air duct, and a communication state between the first air duct and the outlet air duct; when the second air duct is communicated with the inlet air duct, the second air duct is isolated from the outlet air duct, the first air duct is isolated from the inlet air duct, and the first air duct is communicated with the outlet air duct.
Optionally, the first air duct is communicated with the outlet air duct through the fourth air duct, and the second air duct is communicated with the inlet air duct through the third air duct.
Optionally, the switching valve comprises a first poppet and a second poppet; the first poppet valve comprises a first valve rod and a first valve plate which are connected, the first valve plate is arranged in the first air duct, and the first valve plate is provided with a first working position and a second working position; when the first working position is adopted, the first air duct is communicated with the inlet air duct, and the first air duct is isolated from the fourth air duct; when the second working position is adopted, the first air duct is isolated from the inlet air duct, and the first air duct is communicated with the fourth air duct; the second poppet valve comprises a second valve rod and a second valve plate which are connected, the second valve plate is arranged in the second air channel, and the second valve plate is provided with a third working position and a fourth working position; when the air conditioner is in the third working position, the second air duct is communicated with the third air duct, and the second air duct is isolated from the outlet air duct; and when the fourth working position is adopted, the second air duct is isolated from the third air duct, and the second air duct is communicated with the outlet air duct.
Optionally, the switch valve further includes an air valve for controlling a communication state between the third air duct and the inlet air duct.
Optionally, the adsorbent includes a plurality of substrates arranged at intervals, an adsorption space is formed between two adjacent substrates, and a flow divider is arranged between two adjacent substrates, and is used for partitioning the first flow channel and the second flow channel in the adsorption space.
Optionally, one of the two adjacent adsorption spaces is formed with the first flow channel, and the other is formed with the second flow channel.
Optionally, the flow dividing piece is a corrugated board, a pipe fitting or a plate arranged at an included angle with the base plate.
Optionally, the shunt is adhesively secured to the substrate.
Optionally, the shunt member and the substrate are both made of organic adsorbing materials.
Optionally, the extending direction of the first flow channel and the extending direction of the second flow channel form an included angle.
Drawings
FIG. 1 is a graph showing the time-dependent change of the concentration of organic substances in exhaust gas in a specific scenario of the prior art;
FIG. 2 is a graph showing the change in concentration of organic substances in exhaust gas with time after being treated by the exhaust gas concentration adjusting apparatus according to the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an exhaust gas concentration adjusting device provided in the present invention;
FIG. 4 is a flow diagram of the exhaust gas of FIG. 3 with the first valve plate in the first operating position and the damper closed;
FIG. 5 is a flow diagram of the exhaust gas of FIG. 3 with the first valve plate in the second operating position and the damper open;
FIG. 6 is a flow diagram of the exhaust gas of FIG. 3 with the first valve plate in the first operating position and the damper open;
FIG. 7 is a schematic structural diagram of another embodiment of an exhaust gas concentration adjusting apparatus according to the present invention;
FIG. 8 is the exhaust gas flow diagram of FIG. 7 with the first valve plate in the second operating position, the damper open and the second valve plate in the third operating position;
FIG. 9 is a schematic diagram of one embodiment of a subsection;
FIG. 10 is a view showing a structure of a connection between the substrate and the shunt member in FIG. 9;
figure 11 is a schematic diagram of another embodiment of the subsection.
The reference numerals in fig. 3-11 are illustrated as follows:
1, a shell, 11 inlet air ducts, 12 outlet air ducts, 13 first air ducts, 14 second air ducts, 15 third air ducts and 16 fourth air ducts;
2 adsorbent, 21 division, 211 substrate, 212 flow divider, 2a first flow channel, 2b second flow channel;
3, a heater;
4, a cover body and 4a switching air duct;
5 a first poppet, 51 a first stem, 52 a first valve plate;
6 a second poppet, 61 a second stem, 62 a second valve plate;
7 air valve.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between the elements.
The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.
Referring to fig. 1 and 2, fig. 1 is a graph illustrating a change of concentration of organic matters in exhaust gas and time under a specific situation in the prior art, and fig. 2 is a graph illustrating a change of concentration of organic matters in exhaust gas and time after the treatment by the exhaust gas concentration adjusting device according to the present invention.
In the mold opening link in the field of injection molding, the breathing link and the loading and unloading link of a chemical raw material tank in the chemical industry, the concentration of organic matters in the generated waste gas can be greatly increased, and the concentration of organic matters in other links can be relatively low, so that the fluctuation of the concentration of the organic matters in the waste gas in the whole production process is large, and particularly, the method can be seen in figure 1, and further brings great difficulty for the type selection of waste gas treatment equipment.
In view of the above, an embodiment of the present invention provides an exhaust gas concentration adjusting device, which is disposed between a production device and an exhaust gas treatment device, and is configured to perform peak clipping and valley leveling on a concentration of an organic substance in an exhaust gas, so that the concentration of the organic substance in the exhaust gas received by the downstream exhaust gas treatment device can be substantially maintained in a relatively stable set interval, as shown in fig. 2, thereby facilitating model selection of the exhaust gas treatment device, avoiding over-design of the exhaust gas treatment device, and ensuring effective treatment on the organic substance in the exhaust gas.
It should be noted that the embodiment of the present invention does not limit the specific range of the setting interval, and in practical applications, those skilled in the art can consider various factors according to the specific information of the production equipment and the type of the exhaust gas treatment equipment.
In detail, referring to fig. 3 to 11, fig. 3 is a schematic structural diagram of an embodiment of an exhaust gas concentration adjusting device provided by the present invention, FIG. 4 is a flow diagram of the exhaust gas of FIG. 3 when the first valve plate is in the first operating position and the air valve is closed, FIG. 5 is a flow diagram of the exhaust gas of FIG. 3 when the first valve plate is in the second operating position and the air valve is open, fig. 6 is a flow chart of the exhaust gas when the first valve plate is at the first working position and the air valve is opened in fig. 3, fig. 7 is a structural schematic diagram of another specific embodiment of the exhaust gas concentration regulating device provided by the invention, FIG. 8 is the exhaust gas flow diagram of FIG. 7 with the first valve plate in the second operating position, the damper open and the second valve plate in the third operating position, fig. 9 is a schematic structural view of an embodiment of the subsection, fig. 10 is a schematic structural view of a connection structure of the substrate and the shunt member in fig. 9, and fig. 11 is a schematic structural view of another embodiment of the subsection.
As shown in fig. 3 to 6, the present invention provides an exhaust gas concentration adjusting apparatus, which includes a housing 1, an adsorbent 2, a control valve, and a heater 3.
Wherein, the shell 1 is provided with an inlet air duct 11 and an outlet air duct 12, the inlet air duct 11 is used for connecting with an exhaust gas discharge port of upstream production equipment so as to introduce exhaust gas generated by the production equipment; the outlet duct 12 is connected to an exhaust gas inlet of a downstream exhaust gas treatment device to introduce the exhaust gas treated by the exhaust gas concentration regulating device provided by the present invention into the exhaust gas treatment device. The adsorbent 2 is disposed in the housing 1, and the adsorbent 2 has a first flow channel 2a and a second flow channel 2b separated from each other, and when the exhaust gas flows through the first flow channel 2a and the second flow channel 2b, the adsorbent 2 can adsorb organic substances in the exhaust gas. The on-off valve is used to control the flow direction of the exhaust gas so that the exhaust gas can selectively flow into the first flow passage 2a and/or the second flow passage 2 b. The heater 3 is used for heating a part of the exhaust gas in the second flow channel 2b or the whole second flow channel 2b, so as to heat the adsorbent 2, and further to desorb the organic matters adsorbed by the adsorbent 2.
In a specific practice, when the concentration of the organic matters in the exhaust gas generated by the upstream production equipment is high, the exhaust gas can be selectively introduced into the first flow passage 2a and/or the second flow passage 2b through the control valve to adsorb the organic matters in the exhaust gas through the adsorbent 2, so that the concentration of the organic matters in the exhaust gas can be reduced; when the concentration of organic matters in the upstream production equipment is low, the heater 3 can be turned on to heat the whole adsorbent 2 by heating the exhaust gas entering a part of the second flow channels 2b or all the second flow channels 2b, so that the organic matters adsorbed by the adsorbent 2 can be desorbed, and the concentration of the organic matters in the exhaust gas can be increased. In this way, the peak-clipping and valley-clipping effects can be achieved well, and the concentration of organic substances in the exhaust gas discharged from the outlet duct 12 can be maintained within a relatively stable set interval.
More importantly, the adsorbent 2 in the embodiment of the present invention is provided with the first flow passage 2a and the second flow passage 2b which are separated from each other, and the arrangement of the two flow passages in combination with the control valve can provide more operation modes for the exhaust gas concentration regulating device, so as to better adapt to the situation that the concentration of organic matters in the exhaust gas generated by the upstream production equipment is complicated and variable.
In the embodiment of the present invention, only the exhaust gas entering a part or all of the second flow channel 2b is heated, and the exhaust gas entering the first flow channel 2a is not heated. Thus, when the two flow passages are simultaneously filled with waste gas, the amount of waste gas to be heated can be relatively less, the pressure of the heater 3 can be reduced, and the energy consumption can be reduced.
Here, the material of the adsorbent 2 is not limited in the embodiment of the present invention, and in practice, a person skilled in the art may design the adsorbent according to actual needs as long as the technical purpose of adsorbing organic substances is satisfied.
At least a part of the adsorbent 2 may be made of an organic adsorbent, and the kind of the organic adsorbent is not limited. For example, the organic material adsorbent may be a fibrous material having an adsorption function, such as activated carbon fiber; or, the organic matter adsorbing material can also adopt inorganic fibers such as ceramic fibers, glass fibers and the like as loads and is combined with activated carbon, molecular sieves or other organic matter adsorbing materials to form a whole; alternatively, the organic adsorbent may be a ceramic material containing activated carbon, molecular sieves, or other organic adsorbents.
In addition, the structural form of the adsorbent 2, the number of the first flow channels 2a and the second flow channels 2b, the shape of the cross section (cross section perpendicular to the extending direction), the flow area, etc. are not limited in the embodiments of the present invention, and in particular, those skilled in the art can design the adsorbent according to actual needs as long as the actual use requirements can be met.
In a specific scheme, with reference to fig. 9-11, the adsorbent 2 may include a plurality of substrates 211 arranged at intervals, an adsorption space may be formed between two adjacent substrates 211, and a flow divider 212 may be arranged between two adjacent substrates 211, for dividing the first flow channel 2a and the second flow channel 2b in the adsorption space. Only one of the substrate 211 and the shunt 212 may be made of an organic material, or both of them may be made of an organic material.
The shunt 212 and the substrate 211 may be manufactured separately and then assembled. In this embodiment, the connection between the shunt member 212 and the substrate 211 may be various, as long as the reliable connection between the shunt member and the substrate can be ensured. For example, the shunt member 212 and the substrate 211 may be fixed by bonding, locking screws, welding, clamping, and the like. When the adhesive fixing is adopted, the kind of the adhesive may not be limited.
In fact, the shunt member 212 and the base plate 211 may be a one-piece structure integrally formed. For example, the absorbent body 2 formed by combining the flow dividing member 212 and the substrate 211 may be directly obtained by a 3D printing technology, and thus, the acquisition of the absorbent body 2 may be relatively simple.
It will be appreciated that the configuration and arrangement of the flow divider 212 directly determines the cross-sectional shape of the first and second flow channels 2a, 2 b.
In the embodiment of fig. 9 and 10, the flow divider 212 may be corrugated, and in this case, the cross-sectional shape of the first flow channel 2 a/the second flow channel 2b is formed to be substantially triangular. Alternatively, the flow dividing member 212 may be a plate member disposed at an angle to the base plate 211, and at this time, the cross-sectional shape of the first flow channel 2 a/the second flow channel 2b may be a triangle, a rectangle, a parallelogram, a trapezoid, a rhombus, or the like according to the arrangement of the flow dividing member 212.
In the embodiment of fig. 11, the flow divider 212 may be embodied as a tube. At this time, the first flow channel 2 a/the second flow channel 2b may include a space between the pipe and the substrate 211, a space between two adjacent pipes, and the like, in addition to the in-pipe passage of the pipe; it should be noted that, if the space between the pipe and the substrate 211 and the space between two adjacent pipes are already filled with glue or other materials, the first flow channel 2 a/the second flow channel 2b may not include these spaces. The specific shape of the channel in the pipe is related to the shape of the pipe fitting; in the embodiment of fig. 11, the pipe is a circular pipe, and accordingly, the channel in the pipe is a circular channel.
It is to be understood that the above description is only an exemplary description of the possible cross-sectional shapes of the first flow passage 2 a/the second flow passage 2b, but this is not intended to limit the scope of the implementation of the exhaust gas concentration regulating device provided by the present invention, and the cross-sectional shapes of the first flow passage 2 a/the second flow passage 2b may be designed to be other under the condition of satisfying the function, as long as the conduction of the first flow passage 2 a/the second flow passage 2b to the exhaust gas is not affected.
In some embodiments, the first flow channel 2a and the second flow channel 2b may be located in the same adsorption space, i.e., between two adjacent substrates 211, and both the first flow channel 2a and the second flow channel 2b may be formed.
In other embodiments, the first flow channel 2a and the second flow channel 2b may be located in different adsorption spaces, so that the first flow channel 2a and the second flow channel 2b may be located in different layers, and the exhaust gas can be more conveniently conveyed into the first flow channel 2a and the second flow channel 2 b. In this embodiment, the adsorption space in which the first flow channel 2a is disposed and the adsorption space in which the second flow channel 2b is disposed may be adjacent to each other, and this scheme may be as shown in fig. 9 to 11, that is, one of the adjacent adsorption spaces may be formed with the first flow channel 2a, and the other may be formed with the second flow channel 2 b; alternatively, the first flow channel 2 a/the second flow channel 2b may be disposed in several adjacent layers.
The first flow channel 2a and the second flow channel 2b may be arranged in the same direction, i.e., the extending direction of the first flow channel 2a and the second flow channel 2b may coincide.
Alternatively, the extending direction of the first flow channel 2a and the extending direction of the second flow channel 2b may be arranged at an angle. In this way, the air duct communicated with the first flow passage 2a and the air duct communicated with the second flow passage 2b inside the housing 1 can be distributed on different sides of the adsorbent 2, which is more beneficial to the arrangement of the air ducts; moreover, the arrangement of the plurality of flow directions can effectively reduce the adsorption dead angle caused by the factors such as uneven distribution of the air flow, and the like, so that the adsorption body 2 can be more fully utilized, and the adsorption efficiency can be further improved. Specifically, in the embodiment shown in the drawings, as shown in fig. 9 and 11, the extending direction of the first flow channel 2a and the extending direction of the second flow channel 2b may form an angle of substantially 90 degrees, and this will be described as an example in each of the following embodiments.
For convenience of description, the extending direction of the first flow channel 2a may be referred to as a first direction, and the extending direction of the second flow channel 2b may be referred to as a second direction.
The exhaust gas may directly flow from one end to the other end of the first flow channel 2a while flowing within the adsorbent 2 to penetrate the entire adsorbent 2 in the first direction; and, it is possible to directly flow from one end to the other end of the second flow channel 2b to penetrate the entire adsorbent 2 in the second direction, in which case the heater 3 needs to be provided on the upstream side of the entire adsorbent 2 in the second direction to heat the entire exhaust gas entering the second flow channel 2 b. In addition to this, the embodiment of the present invention provides another flow scheme that can reduce the flow rate of the exhaust gas to the second flow path 2 b.
In detail, the adsorbent 2 may be divided into the plurality of sections 21 in the first direction. The division mode can be based on the split design of the adsorbent body 2 in the first direction, in this case, the adsorbent body 2 is formed by combining a plurality of separately prepared subsections 21, the size of each subsection 21 in the first direction can be relatively small, and the manufacturing, the transportation and the installation can be convenient; in this embodiment, the sections 21 may be in close contact or may be in clearance fit in the first direction, but it is necessary to ensure that the first flow passages 2a of the sections 21 communicate with each other. Alternatively, the absorbent 2 may still be of an integrated structure in the first direction, and in this case, the absorbent 2 needs to be divided in the first direction by a worker according to actual conditions.
Furthermore, a switching duct 4a may be further included, and the second flow passages 2b of the respective sub-portions 21 may communicate with each other through the switching duct 4 a. For the sake of description, the first flow passage 2a may be referred to as a first flow path, and the path formed by the combination of each second flow passage 2b and the transition duct 4a may be referred to as a second flow path.
With the above configuration, the length of the second flow path is substantially equal to the sum of the size of the second flow path 2b of each of the sub-units 21 and the size of the relay duct 4a in the airflow direction, and the length of the second flow path is significantly increased, so that the flow resistance of the exhaust gas in the second flow path can be increased. Thus, when the first flow passage 2a and the second flow passage 2b are both capable of conducting exhaust gas, the amount of exhaust gas entering the second flow passage 2b can be relatively reduced, and the amount of exhaust gas to be heated by the heater 3 can be further reduced, the load of the heater 3 can be reduced, and the energy consumption can be reduced.
Further, it is also possible to set the flow resistance of the first flow path to be smaller than that of the second flow path, so that the amount of exhaust gas entering the second flow path can be smaller than that of the first flow path. Thus, the amount of exhaust gas to be heated by the heater 3 can be reduced to a greater extent, and the energy consumption can be reduced to a greater extent.
It should be noted that the above-described manner of controlling the flow resistance is only one way of achieving the reduction of the intake air amount of the second flow passage 2b, but is not the only way, and in practical applications, the intake air amount of the second flow passage 2b may be controlled by adjusting the opening degree of the on-off valve.
In the embodiment of the present invention, the number of the parts 21 is not limited, and in a specific practice, a person skilled in the art may design the parts according to actual needs as long as the requirements of use can be met. In the embodiment shown in the drawings, there may be three or four or more of the divisions 21. Since one transfer duct 4a can communicate with the second flow passages 2b of the two sub-portions 21, the number of the transfer ducts 4a can be one less than that of the sub-portions 21.
Taking fig. 3 as a perspective view, for convenience of description, each section 21 may be named as: a first section, a second section and a third section. The switching duct 4a may be a second flow passage 2b connecting two adjacent sections 21, that is, the first section and the second section are connected through the switching duct 4a, and the second section and the third section are connected through the switching duct 4 a; at this time, the switching duct 4a does not shield the inlet and outlet of the second flow path, and can facilitate air intake and air discharge. Alternatively, other connection means may be used for the transition duct 4a, for example, a first subsection and a third subsection may be connected by the transition duct 4a, and the first/third subsection may be connected by the transition duct 4a and the second subsection.
The forming manner of the switching duct 4a is not limited, and in specific practice, a person skilled in the art can set the switching duct according to actual needs as long as the use requirements can be met. In some embodiments, a tube may be provided, and both ends of the tube may be connected to the two sections 21, respectively, and the inner cavity of the tube may form the above-mentioned transfer duct 4 a. In other embodiments, a cover 4 may be included, and the cover 4 may cover one side of the adjacent two parts in the extending direction of the second flow passage 2b to form a transition duct 4a by enclosing with the adjacent two parts 21; this embodiment, which can be seen in fig. 3 to 8, is relatively simple in construction and provides a uniform volume of switching ducts 4a with less intrusion into the interior of the housing 1.
When the number of the switching ducts 4a is two or more, only a part of the switching ducts 4a may be provided with the heater 3. Of course, the heaters 3 may be provided in all the relay ducts 4 a. The type of the heater 3 is not limited herein.
In specific practice, the heating power and the number of the heaters 3 can be controlled to avoid the situation that the desorption is too much in the initial starting stage of the heaters 3, which leads to the abrupt increase of the concentration of the organic matters in the exhaust gas received by the downstream exhaust gas treatment equipment. In other words, in actual operation, the heating power and the number of the heaters 3 can be controlled to adjust the desorption efficiency, so that the concentration curve of the organic matters in the exhaust gas received by the downstream exhaust gas treatment device can be substantially as shown in fig. 2, so as to treat the organic matters in the exhaust gas.
Referring to fig. 3, a first air duct 13 and a second air duct 14 may be formed in the housing 1, the first air duct 13 and the second air duct 14 may be respectively located at two sides of the first flow passage 2a, the first air duct 13 and the second air duct 14 may both be communicated with the first flow passage 2a, and the second air duct 14 may be communicated with the outlet air duct 12; the aforementioned on-off valve may be used to control the communication state of the first duct 13 and the inlet duct 11.
When the first air duct 13 is communicated with the inlet air duct 11, the exhaust gas can flow in the first flow passage 2a of the adsorbent 2 and flow out through the second air duct 14, and the first flow passage 2a of the adsorbent 2 can participate in adsorbing organic matters in the exhaust gas.
Further, a third air duct 15 and a fourth air duct 16 are formed in the housing 1, the third air duct 15 and the fourth air duct 16 may be respectively located at two sides of the extending direction of the second flow passage 2b, both the third air duct 15 and the fourth air duct 16 may be communicated with the second flow passage 2b, and the fourth air duct 16 may be communicated with the outlet air duct 12; the aforementioned on-off valve is also used to control the communication state of the third air duct 15 and the inlet air duct 11.
When the third air duct 15 is communicated with the inlet air duct 11, the exhaust gas can flow in the second flow passage 2b of the adsorbent 2 and flow out through the fourth air duct 16, and the second flow passage 2b in the adsorbent 2 can participate in adsorbing organic matters in the exhaust gas. In this embodiment, when the heater 3 is activated, the whole of the adsorbent 2 can be heated by the exhaust gas entering all or a part of the second flow channel 2b, and desorption of organic substances can be achieved.
Since the second air duct 14 and the fourth air duct 16 are both communicated with the outlet air duct 12, in a specific practice, the second air duct 14 and the fourth air duct 16 can also be directly set to be communicated, so as to simplify the air duct design inside the casing 1.
Based on the design, the exhaust gas concentration regulating device provided by the invention can have three working modes: in the first mode, the first air duct 13 is communicated with the inlet air duct 11, and the third air duct 15 is isolated from the inlet air duct 11, as shown in fig. 4, the exhaust gas can flow in the first flow passage 2a from left to right, and only the first flow passage 2a of the adsorbent 2 participates in adsorbing organic matters in the exhaust gas; in the second mode, the third air duct 15 is communicated with the inlet air duct 11, and the first air duct 13 is isolated from the inlet air duct 11, as shown in fig. 5, the exhaust gas can flow in the second flow duct 2b and the switching air duct 4a, if the heater 3 in the switching air duct 4a is turned on, the desorption of the organic matters can be realized in the second mode, and if the heater 3 in the switching air duct 4a is not turned on, the adsorption of the organic matters can be realized in the second mode; in the third mode, the first air duct 13 is communicated with the inlet air duct 11, and the third air duct 15 is communicated with the inlet air duct, as shown in fig. 6, the exhaust gas can flow in the first flow duct 2a, the second flow duct 2b and the switching air duct 4a, if the heater 3 in the switching air duct 4a is turned on, desorption of organic matters can be realized in the third mode, and if the heater 3 in the switching air duct 4a is not turned on, adsorption of organic matters can be realized in the third mode.
The opening timing of the three modes in specific practice can be controlled by those skilled in the art, and is not particularly limited herein. In an exemplary embodiment, referring to fig. 1, assuming that the concentration of organic matters in the exhaust gas discharged from a specific upstream production facility is as shown in fig. 1, when the organic matters in the exhaust gas exist in a transient high concentration state within the I interval, the first mode may be started, wherein the first flow passage 2a of the adsorbent 2 participates in the adsorption of the organic matters in the exhaust gas to reduce the concentration of the organic matters in the exhaust gas; then, when the exhaust gas is in the section II, the concentration of the organic matters in the exhaust gas is low as a whole, at this time, the third mode may be started, and the heater 3 may be started to heat the adsorbent 2 through the exhaust gas in the second flow path, so as to realize desorption of the organic matters, so that the exhaust gas flowing in the first flow path 2a may take out the organic matters adsorbed in the first flow path 2a in the previous link; then, when the temperature is within the interval III, the concentration of the organic matters in the exhaust gas is continuously higher for a certain period of time, at this time, the aforementioned mode two may be started, and the heater 3 may be turned off, so as to participate in adsorbing the organic matters in the exhaust gas through the second flow channel 2b, so as to reduce the concentration of the organic matters in the exhaust gas.
Further, the switch valve may also be used to control the communication state of the second air duct 14 and the inlet air duct 11, the communication state of the second air duct 14 and the outlet air duct 12, the communication state of the first air duct 13 and the inlet air duct 11, and the communication state of the first air duct 13 and the outlet air duct 12.
When the second air duct 14 is communicated with the inlet air duct 11, the first flow channel 2a can also supply air through the second air duct 14, so as to adjust the air supply direction of the first flow channel 2 a. It should be noted that in this embodiment, the second air duct 14 needs to be isolated from the outlet air duct 12 to prevent the inlet air of the second air duct 14 from being directly exhausted from the outlet air duct 12; in addition, the first air duct 13 needs to be isolated from the inlet air duct 11 to avoid the situation of bidirectional air intake of the first flow passage 2 a; in addition, if the first flow channel 2a enters air from the second air channel 14, the first air channel 13 needs to be used as an air outlet channel, and at this time, the first air channel 13 and the outlet air channel 12 need to be communicated with each other to ensure that the first air channel 13 can be used as the air outlet channel of the first flow channel 2 a.
The communication between the first duct 13 and the outlet duct 12 may be established as separate ducts or may be indirect via a fourth duct 16 to simplify the duct design. Similarly, the second duct 14 may communicate with the inlet duct 11 by establishing a separate duct, or indirectly by means of a third duct 15, in order to simplify the design of the duct.
Taking the first air duct 13 capable of being communicated or isolated with the inlet air duct 11 and the fourth air duct 16, and the second air duct 14 capable of being communicated or isolated with the third air duct 15 and the outlet air duct 12 as an example, the switch valve may include four valve members, and the four valve members may be respectively disposed at a communication position of the first air duct 13 and the inlet air duct 11, a communication position of the first air duct 13 and the fourth air duct 16, a communication position of the second air duct 14 and the third air duct 15, and a communication position of the second air duct 14 and the outlet air duct 12, so as to control a communication state of the four communication positions.
Alternatively, in the embodiment of fig. 7, the switching valve may include the first poppet valve 5 and the second poppet valve 6. The first poppet valve 5 may include a first valve rod 51, a first valve plate 52 and a first driving member 53, the first driving member 53 may be connected to the first valve plate 52 through the first valve rod 51, the first valve plate 52 is disposed in the first air duct 13, and under the action of the first driving member, the position of the first valve plate 52 may be changed, so as to switch between a first working position and a second working position; when the air conditioner is in the first working position, the first air duct 13 is communicated with the inlet air duct 11, and the first air duct 13 is separated from the fourth air duct 16; in the second working position, the first air duct 13 is isolated from the inlet air duct 11, and the first air duct 13 is communicated with the fourth air duct 16. Similarly, the second poppet valve 6 may include a second valve rod 61, a second valve plate 62 and a second driving member 63, the second driving member 63 may be connected to the second valve rod 61 and the second valve plate 62, the second valve plate 62 is disposed in the second air duct 14, and the position of the second valve plate 62 can be changed by the second driving member 63, so that the second poppet valve can be switched between the third working position and the fourth working position; when the air conditioner is at the third working position, the second air duct 14 is communicated with the third air duct 15, and the second air duct 14 is isolated from the outlet air duct 12; in the fourth operating position, the second air duct 14 is isolated from the third air duct 15, and the second air duct 14 is communicated with the outlet air duct 12.
With the arrangement, the two positions can be communicated or isolated through one valve component, the number of the valve components can be reduced, the structure can be simplified, and the control can be simplified.
Here, the embodiments of the present invention do not limit the kinds of the first driving member 53 and the second driving member 63, and in practice, a person skilled in the art can set the driving conditions according to actual needs.
It will be appreciated that the required form of movement of the first and second drive rods 51, 61 is linear displacement and therefore the first and second drive members 53, 63 need only be capable of providing linear displacement. Based on this, the first driving member 53/the second driving member 63 can be driving elements capable of directly generating linear displacement by using a linear air cylinder, an oil cylinder, etc., in this case, the aforementioned first driving rod 51 and the second driving rod 61 can be piston rods of the driving elements; alternatively, the first and second drivers 53 and 63 may include a driving element capable of directly generating rotational displacement, such as a rotary cylinder or a motor, and in this case, a displacement conversion mechanism in the form of a rack and pinion mechanism, a screw mechanism, or the like is further required to convert the rotational displacement into a required linear displacement.
The communication state between the third air duct 15 and the inlet air duct 11 may be controlled by the air valve 7. Since the second duct 14 and the inlet duct 11 are communicated by the third duct 15, the air valve 7 is also required to be in an open state when the second valve plate 62 is in the third operating position to ensure the communication between the second duct 14 and the inlet duct 11.
Based on the exhaust gas concentration adjusting device provided in fig. 7, on the basis of the three original operation modes, an operation mode can be added: in the fourth mode, the first valve plate 52 is in the second working position, the second valve plate 62 is in the third working position, and the air valve 7 is in the open state, as shown in fig. 8, at this time, both the third air duct 15 and the second air duct 14 may be communicated with the inlet air duct 11, the first air duct 13 and the fourth air duct 16, and the exhaust gas may flow in the first flow passage 2a and the second flow passage 2 b; unlike the foregoing mode three, the flow direction of the exhaust gas in the first flow passage 2a is different.
Still referring to fig. 1, if the aforementioned mode one is performed in the section I, the exhaust gas flows in the first flow passage 2a from left to right (refer to fig. 4). Then, in the following section II, the above-mentioned mode four may be executed, and the heater 3 is turned on, at this time, the flow direction of the exhaust gas in the first flow channel 2a may be from right to left (refer to fig. 8), so that the flow direction of the exhaust gas during the organic matter adsorption in the first flow channel 2a is opposite to the flow direction of the exhaust gas during the organic matter desorption, which is more favorable for ensuring the completeness of the organic matter desorption.
Referring again to fig. 8, it can be seen that the first heater 3 in the second flow path is actually located downstream of the first section, that is, the exhaust gas entering the second flow channel 2b of the first section is not heated, so that the first section is not heated, and then the exhaust gas entering the first flow channel 2a of the first section can desorb the organic compounds adsorbed in the first flow channel 2a by means of the concentration difference of the organic compounds.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (19)
1. An exhaust gas concentration adjustment device characterized by comprising:
a housing (1), the housing (1) having an inlet duct (11) and an outlet duct (12);
the adsorption body (2) is arranged in the shell (1), and the adsorption body (2) is provided with a first flow passage (2a) and a second flow passage (2b) which are separated;
a control valve for controlling the flow of the exhaust gas into the first flow passage (2a) and/or the second flow passage (2 b);
and the heater (3) is used for heating at least part of the exhaust gas of the second flow passage (2 b).
2. The exhaust gas concentration adjusting apparatus according to claim 1, characterized in that the adsorbent (2) includes a plurality of divisions (21) in an extending direction of the first flow passage (2 a);
the air distribution system further comprises a switching air duct (4a), and the second flow passages (2b) of the branches (21) are communicated through the switching air duct (4 a).
3. The exhaust gas concentration adjusting apparatus according to claim 2, wherein the first flow passage (2a) forms a first flow path, and the second flow passage (2b) of each of the branches (21) and the switching duct (4a) combine to form a second flow path having a larger flow resistance than the first flow path.
4. The exhaust gas concentration adjusting apparatus according to claim 2, wherein the number of the switching ducts (4a) is two or more, and the heater (3) is provided in at least one of the switching ducts (4 a).
5. The exhaust gas concentration adjusting apparatus according to claim 2, wherein the number of the branches (21) is three or more, and the second flow passages (2b) of two adjacent branches (21) are connected by the transfer duct (4 a).
6. The exhaust gas concentration adjusting apparatus according to claim 5, further comprising a cover (4), wherein the cover (4) covers one side of two adjacent branches (21) in the extending direction of the second flow passage (2b), and forms a switching duct (4a) by enclosing with the two adjacent branches (21).
7. The exhaust gas concentration adjustment apparatus according to any one of claims 1 to 6, wherein a first air duct (13) and a second air duct (14) are formed in the housing (1), the first air duct (13) and the second air duct (14) are respectively located on both sides of the first flow path (2a), the first air duct (13) and the second air duct (14) are both communicated with the first flow path (2a), and the second air duct (14) is capable of being communicated with the outlet air duct (12);
the switch valve is used for controlling the communication state of the first air duct (13) and the inlet air duct (11).
8. The exhaust gas concentration adjusting apparatus according to claim 7, wherein a third air duct (15) and a fourth air duct (16) are further formed in the housing (1), the third air duct (15) and the fourth air duct (16) are respectively located at two sides of the extending direction of the second flow passage (2b), the third air duct (15) and the fourth air duct (16) are both communicated with the second flow passage (2b), and the fourth air duct (16) is communicated with the outlet air duct (12);
the switch valve is also used for controlling the communication state of the third air duct (15) and the inlet air duct (11).
9. The exhaust gas concentration adjustment apparatus according to claim 8, wherein the second air passage (14) and the fourth air passage (16) communicate with each other.
10. The exhaust gas concentration adjustment apparatus according to claim 8, wherein the on-off valve is further configured to control a communication state of the second air duct (14) and the inlet air duct (11), a communication state of the second air duct (14) and the outlet air duct (12), and a communication state of the first air duct (13) and the outlet air duct (12);
when the second air duct (14) is communicated with the inlet air duct (11), the second air duct (14) is isolated from the outlet air duct (12), the first air duct (13) is isolated from the inlet air duct (11), and the first air duct (13) is communicated with the outlet air duct (12).
11. The exhaust gas concentration adjusting apparatus according to claim 10, wherein the first air duct (13) communicates with the outlet air duct (12) through the fourth air duct (16), and the second air duct (14) communicates with the inlet air duct (11) through the third air duct (15).
12. The exhaust gas concentration adjustment apparatus according to claim 11, wherein the on-off valve includes a first poppet valve (5) and a second poppet valve (6);
the first poppet valve (5) comprises a first valve rod (51) and a first valve plate (52) which are connected, the first valve plate (52) is arranged in the first air channel (13), and the first valve plate (52) is provided with a first working position and a second working position; when the air conditioner is in the first working position, the first air duct (13) is communicated with the inlet air duct (11), and the first air duct (13) is isolated from the fourth air duct (16); when the air conditioner is in the second working position, the first air duct (13) is isolated from the inlet air duct (11), and the first air duct (13) is communicated with the fourth air duct (16);
the second poppet valve (6) comprises a second valve rod (61) and a second valve plate (62) which are connected, the second valve plate (62) is arranged in the second air duct (14), and the second valve plate (16) has a third working position and a fourth working position; when the air conditioner is in the third working position, the second air duct (14) is communicated with the third air duct (15), and the second air duct (14) is isolated from the outlet air duct (12); and when the fourth working position is carried out, the second air duct (14) is isolated from the third air duct (15), and the second air duct (14) is communicated with the outlet air duct (12).
13. The exhaust gas concentration adjusting apparatus according to claim 8, wherein the on-off valve further includes an air valve (7), and the air valve (7) is configured to control a communication state of the third air passage (15) and the inlet air passage (11).
14. The exhaust gas concentration adjusting apparatus according to any one of claims 1 to 6, wherein the adsorbent (2) includes a plurality of base plates (211) spaced apart from each other, an adsorption space is formed between two adjacent base plates (211), and a flow dividing member (212) is disposed between two adjacent base plates (211) to divide the first flow channel (2a) and the second flow channel (2b) in the adsorption space.
15. The exhaust gas concentration adjusting apparatus according to claim 14, wherein one of two adjacent adsorption spaces is formed with the first flow passage (2a), and the other is formed with the second flow passage (2 b).
16. The exhaust gas concentration regulating device according to claim 14, wherein the flow divider (212) is a corrugated board, a pipe or a plate arranged at an angle to the base plate (211).
17. The exhaust gas concentration regulating device according to claim 14, wherein the flow dividing member (212) is adhesively fixed to the base plate (211).
18. The exhaust gas concentration regulating apparatus according to claim 14, wherein the flow divider (212) and the base plate (211) are both made of an organic adsorbent material.
19. The exhaust gas concentration adjusting apparatus according to claim 14, characterized in that an extending direction of the first flow passage (2a) and an extending direction of the second flow passage (2b) are arranged at an angle.
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| CN202210669729.2A CN114950065B (en) | 2022-06-14 | 2022-06-14 | Waste gas concentration adjusting device |
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| CN202210669729.2A CN114950065B (en) | 2022-06-14 | 2022-06-14 | Waste gas concentration adjusting device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017013032A (en) * | 2015-07-06 | 2017-01-19 | 大阪瓦斯株式会社 | Method for producing moisture control element |
| CN107420919A (en) * | 2017-06-22 | 2017-12-01 | 南京艾尔普特环保科技有限公司 | A kind of equipment and passageway switching method of the switching of organic exhaust gas exhaust gases passes |
| CN110860185A (en) * | 2018-08-27 | 2020-03-06 | 杰智环境科技股份有限公司 | Switching valve and adsorption and desorption rotating wheel equipment and method capable of switching desorption gas flow direction |
| CN210278699U (en) * | 2019-07-03 | 2020-04-10 | 深圳市百瑞空气处理设备有限公司 | Organic gas recovery machine |
| CN111845058A (en) * | 2020-07-24 | 2020-10-30 | 山东佳和保护膜有限公司 | Protective film drying waste gas treatment device and process thereof |
| CN113028429A (en) * | 2020-05-19 | 2021-06-25 | 上海雅澈环保科技有限公司 | Compact electric heating type heat storage oxidation furnace |
| CN216557594U (en) * | 2022-01-29 | 2022-05-17 | 北京小米移动软件有限公司 | Air duct conversion structure, fresh air processing system and air conditioner |
-
2022
- 2022-06-14 CN CN202210669729.2A patent/CN114950065B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017013032A (en) * | 2015-07-06 | 2017-01-19 | 大阪瓦斯株式会社 | Method for producing moisture control element |
| CN107420919A (en) * | 2017-06-22 | 2017-12-01 | 南京艾尔普特环保科技有限公司 | A kind of equipment and passageway switching method of the switching of organic exhaust gas exhaust gases passes |
| CN110860185A (en) * | 2018-08-27 | 2020-03-06 | 杰智环境科技股份有限公司 | Switching valve and adsorption and desorption rotating wheel equipment and method capable of switching desorption gas flow direction |
| CN210278699U (en) * | 2019-07-03 | 2020-04-10 | 深圳市百瑞空气处理设备有限公司 | Organic gas recovery machine |
| CN113028429A (en) * | 2020-05-19 | 2021-06-25 | 上海雅澈环保科技有限公司 | Compact electric heating type heat storage oxidation furnace |
| CN111845058A (en) * | 2020-07-24 | 2020-10-30 | 山东佳和保护膜有限公司 | Protective film drying waste gas treatment device and process thereof |
| CN216557594U (en) * | 2022-01-29 | 2022-05-17 | 北京小米移动软件有限公司 | Air duct conversion structure, fresh air processing system and air conditioner |
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