CN114917720B - Trace odor enrichment device - Google Patents
Trace odor enrichment device Download PDFInfo
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- CN114917720B CN114917720B CN202210725173.4A CN202210725173A CN114917720B CN 114917720 B CN114917720 B CN 114917720B CN 202210725173 A CN202210725173 A CN 202210725173A CN 114917720 B CN114917720 B CN 114917720B
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 107
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims description 59
- 239000000428 dust Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005067 remediation Methods 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 27
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- B01D53/002—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 condensation
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Drying Of Gases (AREA)
Abstract
The application relates to the technical field of environmental remediation and detection, provides a trace odor enrichment device, include: the device comprises an air inlet unit, a blower unit, a dewatering condensing unit and an adsorption unit, wherein the blower unit is arranged at the rear end of the air inlet unit, and the dewatering condensing unit is respectively connected with the blower unit and the adsorption unit; the adsorption unit comprises a liquid nitrogen condensing box and an adsorption column arranged in the liquid nitrogen condensing box, a pipeline system is arranged in the adsorption unit, two ends of the adsorption column are connected with the water removal condensing unit by the pipeline system, adsorbed odor is discharged, and an air valve system for controlling the air valve system to open and stop is arranged on the pipeline system. The odor firstly passes through the dewatering condensing unit to remove the vapor in the odor, so that the interference of the vapor on the adsorption effect is avoided, and then the adsorption and enrichment are carried out through the adsorption unit, and the liquid nitrogen condensing box realizes the low-temperature adsorption of the odor, so that the condensation dewatering and the low-temperature adsorption of the odor are realized, and the adsorption efficiency of trace components in the odor is improved.
Description
Technical Field
The application belongs to the technical field of environmental treatment and detection, and more specifically relates to a trace odor enrichment device.
Background
Among all environmental pollution factors, air pollution has the characteristics of fast diffusion, wide influence range, large treatment difficulty, and especially has the technical limitations of low detection threshold, large smell and the like in the analysis, detection and treatment processes of odor emitted from the periphery of a garbage transfer station, a kitchen garbage treatment plant and the like. Part of the odor components can cause serious malodorous smell when the content is extremely low, and the analysis and detection and targeted treatment of the odor components are more technically challenging.
For the treatment of malodorous gas, the key is the accurate determination of the components, and the determination of trace components in malodor requires the corresponding enrichment technology to increase the concentration of the components to be detected. Most of enrichment methods in the prior art are used for adsorption enrichment, but most of trace components emitting malodor are discharged in an unorganized manner, so that the problems of long enrichment time, difficulty in determining concentration multiple and the like exist in the enrichment process, the enrichment efficiency is low, the time is long, and the enrichment and analysis treatment of the trace components are not facilitated.
In addition, the malodorous gas in which trace components are present often contains a large amount of water vapor at the same time. After entering the adsorption material, the water vapor occupies adsorption sites of trace components in the odor, so that the adsorption capacity of the adsorption material on the trace components is reduced, and the enrichment of the trace components is also influenced. Since the concentration of the trace component is too low, in order to improve the adsorption efficiency thereof, it is necessary to keep the adsorption unit in a temperature environment as low as possible. However, the low temperature environment also causes liquefaction or desublimation of the water vapor in the odor to be treated, which is liable to cause structural destruction of the adsorbent. Therefore, how to solve the problem of the interference of the water vapor in the odor to the enriched gas is a urgent need for rescue.
Disclosure of Invention
An aim of the embodiment of the application is to provide a trace odor enrichment device to solve the technical problem that vapor influences adsorption enrichment effect in trace odor enrichment process in the prior art.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows: provided is a trace odor enrichment device comprising: the device comprises an air inlet unit, a blower unit, a dewatering condensing unit and an adsorption unit, wherein the blower unit is arranged at the rear end of the air inlet unit, and the dewatering condensing unit is respectively connected with the blower unit and the adsorption unit; the adsorption unit comprises a liquid nitrogen condensing box and an adsorption column arranged in the liquid nitrogen condensing box, a pipeline system is arranged in the adsorption unit, two ends of the adsorption column are connected with the water removal condensing unit by the pipeline system, adsorbed odor is discharged, and an air valve system for controlling the air valve system to open and stop is arranged on the pipeline system.
In one embodiment, at least two liquid nitrogen condensing tanks are provided, each liquid nitrogen condensing tank is internally provided with an adsorption column, and two ends of each adsorption column are connected through the pipeline system.
In one embodiment, the air inlet unit comprises an air collecting port, and a dust filter screen and a gas flowmeter are arranged at the rear end of the air collecting port.
In one embodiment, the blower unit includes a first blower, a second blower, and a third blower, the first blower and the second blower are disposed at a rear end of the air intake unit, and the third blower is disposed at a rear end of the adsorption unit and connected with the pipe system.
In one embodiment, the water removal condensing unit comprises a first refrigeration sheet group and a second refrigeration sheet group, wherein a plurality of refrigeration sheets in the first refrigeration sheet group and the second refrigeration sheet group are arranged in parallel, and the refrigeration sheets are in a shuttle shape.
In one embodiment, the dewatering and condensing unit further comprises a liquid guide plate, a first Y-shaped gas pipe and a second Y-shaped gas pipe, wherein the liquid guide plate is arranged between the first refrigeration sheet group and the second refrigeration sheet group, one end of the first refrigeration sheet group is communicated with the first air blower, the other end of the first refrigeration sheet group is communicated with the first Y-shaped gas pipe, one end of the second refrigeration sheet group is communicated with the second air blower, the other end of the second refrigeration sheet group is communicated with the second Y-shaped gas pipe, the first Y-shaped gas pipe and the second Y-shaped gas pipe are communicated with the pipeline system, the first Y-shaped gas pipe and the second Y-shaped gas pipe are communicated with each other, a first three-way air valve is arranged at the intersection of the first Y-shaped gas pipe, and a second three-way air valve is arranged at the intersection of the second Y-shaped gas pipe.
In one embodiment, a water storage tank is arranged at the bottom of the dewatering and condensing unit.
In one embodiment, the pipeline system is of a mesh-shaped pipeline structure, the two adsorption columns are a first adsorption column and a second adsorption column respectively and are arranged on a middle pipeline of the mesh-shaped pipeline structure respectively, and two vertexes of the mesh-shaped pipeline structure are communicated with the corresponding first Y-shaped gas pipe and the corresponding second Y-shaped gas pipe respectively.
In one embodiment, the valve system includes a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, and an eighth valve; the first air valve and the second air valve are arranged on middle pipelines at two ends of the first adsorption column, the third air valve and the fourth air valve are arranged on pipelines between the first adsorption column and the second adsorption column, the fifth air valve and the sixth air valve are arranged on middle pipelines at two ends of the second adsorption column, the seventh air valve and the eighth air valve are respectively arranged on other two vertexes of the mesh-shaped pipeline structure, and the third air blower is communicated with the pipelines in the middle of the seventh air valve and the eighth air valve.
In one embodiment, each air valve of the air valve system and the first three-way air valve and the second three-way air valve are controlled to be opened and closed by a PLC system.
The trace odor enrichment device that this application provided's beneficial effect lies in: the odor to be enriched enters through the air inlet unit, and the water vapor in the odor is removed through the dewatering and condensing unit under the power action of the blower unit, so that the odor is changed into dry odor, the interference of the water vapor on the adsorption effect is avoided, then the odor is adsorbed and enriched through the adsorption unit, and the low-temperature adsorption of the odor is realized through the liquid nitrogen condensing box; thus, condensation dewatering and low-temperature adsorption of odor to be enriched are realized, the adsorption efficiency of trace components in the odor is improved, and efficient adsorption of the odor with different components can be realized by changing different adsorption columns.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a trace odor enrichment device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of parallel flow directions of air flows and air valves in a trace odor enrichment device according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of gas flow in deicing mode in a trace odor enrichment device according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a serial flow direction of air flow in a trace odor enrichment device according to an embodiment of the present application.
Wherein, each reference sign in the figure:
1. an air intake unit; 11. an air collecting port; 12. a dust filter screen; 13. a gas flow meter; 2. a blower unit; 21. a first blower; 22. a second blower; 23. a third blower; 3. a water removal condensing unit; 311. a first refrigeration sheet group; 312. a second refrigeration sheet group; 321. a first Y-shaped gas pipe; 322. a second Y-shaped gas pipe; 323. a first three-way gas valve; 324. a second three-way gas valve; 33. a liquid guide plate; 34. a water storage tank; 4. an adsorption unit; 411. a first adsorption column; 412. a second adsorption column; 421. a first liquid nitrogen condensing tank; 422. a second liquid nitrogen condensing tank; 5. an air valve system; 51. a first air valve; 52. a second air valve; 53. a third air valve; 54. a fourth air valve; 55. a fifth air valve; 56. a sixth air valve; 57. a seventh air valve; 58. and an eighth air valve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
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 application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1 to 4, a trace odor enrichment device provided in an embodiment of the present application will now be described. This trace odor enrichment device includes: an air inlet unit 1, a blower unit 2, a dewatering and condensing unit 3 and an adsorption unit 4. The air inlet unit 1 is used for communicating with an odor air source to be enriched, and the air blower unit 2 is used for providing power for the flow of the odor; the water removal condensing unit 3 is respectively connected with the blower unit 2 and the adsorption unit 4; the blower unit 2 guides the odor into the dewatering and condensing unit 3 to remove the water vapor in the odor, the dried odor enters the adsorption unit 4 again to be adsorbed and enriched, and the enriched residual gas is discharged.
In this embodiment, the water removal condensing unit 3 and the adsorbing unit 4 are both disposed in a closed case. The blower unit 2 and the air inlet unit 1 are arranged outside the box body.
The adsorption unit 4 comprises a liquid nitrogen condensing box and an adsorption column arranged in the liquid nitrogen condensing box, and the liquid nitrogen condensing box is used for cooling the adsorption column to realize low-temperature adsorption enrichment. The adsorption column is internally provided with an adsorption material for realizing enrichment of corresponding trace odor. The adsorption column is used for replacing the corresponding adsorption material according to different odor.
In this embodiment, a pipeline system is disposed in the adsorption unit 4, the pipeline system connects two ends of the adsorption column with the dewatering and condensing unit 3 and discharges the adsorbed odor, and the odor dried by the dewatering and condensing unit 3 enters the adsorption column through the pipeline system to complete adsorption, and then discharges the residual odor. In this embodiment, the pipe system is provided with a gas valve system 5 for controlling the opening and closing of the pipe system, so as to control the working state of the adsorption column.
In this embodiment, the liquid nitrogen condensing tanks are provided with at least two, each liquid nitrogen condensing tank is internally provided with an adsorption column, and two ends of each adsorption column are connected through a pipeline system. Specifically, the two liquid nitrogen condensing boxes are a first liquid nitrogen condensing box 421 and a second liquid nitrogen condensing box 422, an adsorption column in the first liquid nitrogen condensing box 421 is a first adsorption column 411, and an adsorption column in the second liquid nitrogen condensing box 422 is a second adsorption column 412. In this embodiment, the first adsorption column 411 and the second adsorption column 412 are connected in parallel by a piping system.
In this embodiment, the air inlet unit 1 is of a horn mouth structure, the air inlet unit 1 comprises an air collecting port 11, a dust filter screen 12 and a gas flowmeter 13 are arranged at the rear end of the air collecting port 11, the dust filter screen 12 is used for filtering large-particle impurities in odor, and the gas flowmeter is used for measuring the flow of the odor to be enriched. The air collecting opening 11 is a horn mouth, so that the odor is conveniently sucked under the action of the blower unit 2. In this embodiment, the odor gas source to be enriched may be a space where odor is generated, such as a garbage factory.
In the present embodiment, the blower unit 2 includes the first blower 21, the second blower 22, and the third blower 23, and the first blower 21, the second blower 22, and the third blower 23 can each be operated individually. The first blower 21 and the second blower 22 are disposed at the rear end of the air intake unit 1, and the third blower 23 is disposed at the rear end of the adsorption unit 4 and connected to the pipe system. The first blower 21, the second blower 22, and the third blower 23 are used to maintain a pressure difference so that the odor can flow.
In this embodiment, the water removal condensing unit 3 includes a first refrigeration sheet group 311 and a second refrigeration sheet group 312, and a plurality of refrigeration sheets in the first refrigeration sheet group 311 and the second refrigeration sheet group 312 are arranged in parallel and the refrigeration sheets are in a shuttle shape, so that the contact area between the odor and the refrigeration sheets is increased, thereby improving the removal efficiency of the water vapor. The refrigerating sheet is electrically connected with an external power supply. Typically, semiconductor cooling fins are used.
In this embodiment, the water removal condensing unit 3 further includes a liquid guide plate 33, a first Y-shaped gas pipe 321 and a second Y-shaped gas pipe 322, the liquid guide plate 33 is disposed between the first refrigeration sheet set 311 and the second refrigeration sheet set 312, the liquid guide plate 33 is used for collecting water dropped after the first refrigeration sheet set 311 is condensed, preventing the water from dropping on the second refrigeration sheet set 312, and then discharging the collected water to the bottom of the water removal condensing unit 3.
Wherein, one end of the first refrigeration sheet set 311 is communicated with the first blower 21, the other end is communicated with the first Y-shaped air pipe 321, one end of the second refrigeration sheet set 312 is communicated with the second blower 22, the other end is communicated with the second Y-shaped air pipe 322, the first Y-shaped air pipe 321 and the second Y-shaped air pipe 322 are communicated with the pipeline system, the first Y-shaped air pipe 321 and the second Y-shaped air pipe 322 are communicated with each other, a first three-way air valve 323 is arranged at the intersection of the first Y-shaped air pipe 321, and a second three-way air valve 324 is arranged at the intersection of the second Y-shaped air pipe 322. The first three-way gas valve 323 and the second three-way gas valve 324 are used for controlling the flow direction of the odor gas flow.
The first Y-shaped gas pipe 321 and the second Y-shaped gas pipe 322 are respectively provided with three interfaces, the first interfaces of the first Y-shaped gas pipe 321 and the second Y-shaped gas pipe 322 are communicated with a channel where the refrigerating piece is positioned, the second interface of the first Y-shaped gas pipe 321 is connected with a pipeline system, the second interface of the second Y-shaped gas pipe 322 is connected with the pipeline system, and the third interface of the first Y-shaped gas pipe 321 and the third interface of the second Y-shaped gas pipe 322 are communicated with each other; and the first three-way gas valve 323 and the second three-way gas valve 324 are used for controlling the gas flow to flow through the first interface and the second interface or flow through the first interface and the third interface.
In this embodiment, a water storage tank 34 is provided at the bottom of the water removal condensing unit 3, and the water storage tank 34 is used for collecting water dropped after condensation.
In this embodiment, since two adsorption columns are arranged at intervals, the pipeline system is in a mesh-shaped pipeline structure, as shown in fig. 2, the mesh-shaped pipeline structure is arranged in a tilting 90 ° manner, wherein each adsorption column is respectively arranged on a middle pipeline of the mesh-shaped pipeline structure, and two vertexes of the mesh-shaped pipeline structure are respectively communicated with a corresponding first Y-shaped gas pipe 321 and a corresponding second Y-shaped gas pipe 322; the third blower 23 is arranged in the middle of the outer pipeline of the mesh-shaped pipeline structure far away from the water removal condensing unit 3. The mesh-shaped pipeline structure is used for realizing the parallel connection of the adsorption columns. Of course, the number of the middle pipelines of the mesh-shaped pipeline structure is increased according to the number of the adsorption columns.
In this embodiment, the number of air valves in the air valve system 5 is set according to the mesh-shaped pipeline structure. Specifically, the valve system 5 includes a first valve 51, a second valve 52, a third valve 53, a fourth valve 54, a fifth valve 55, a sixth valve 56, a seventh valve 57, and an eighth valve 58. As shown in fig. 2 and 4, the first air valve 51 and the second air valve 52 are disposed on the middle pipes at the two ends of the first adsorption column 411, the third air valve 53 and the fourth air valve 54 are disposed on the pipes between the first adsorption column 411 and the second adsorption column 412, the fifth air valve 55 and the sixth air valve 56 are disposed on the middle pipes at the two ends of the second adsorption column 412, the seventh air valve 57 and the eighth air valve 58 are disposed on the other two vertexes of the mesh-shaped pipe structure, and the third blower 23 is communicated with the pipe between the seventh air valve 57 and the eighth air valve 58. The function of the gas valve system 5 is to achieve a series or parallel connection of the first adsorption column 411 and the second adsorption column 412, whereby the state can be changed according to the enrichment requirements.
In this embodiment, each air valve and the three-way air valve are all electric control valves, each air valve of the air valve system 5 and the first three-way air valve 323 and the second three-way air valve 324 are all controlled to be opened and closed by a PLC system, and the PLC system is an existing control system, so that the opening and closing of each air valve and the three-way air valve can be accurately controlled
In the first working mode of the present embodiment, as shown in fig. 2, except for the seventh air valve 57 being in the closed state, the other air valves are all in the open state, the first adsorption column 411 and the second adsorption column 412 are in the parallel state, and at this time, the first adsorption column 411 and the second adsorption column 412 can simultaneously enrich the odor, and this state is suitable for the state where trace amounts of odor are relatively more.
In the second working mode of this embodiment, as shown in fig. 3, the water removal effect is affected due to too much ice on the refrigerating sheet, at this time, the second interfaces of the first three-way air valve 323 and the second three-way air valve 324 are closed, the odor cannot enter the adsorption unit 4, the third interfaces of the first three-way air valve 323 and the second three-way air valve 324 are communicated, the first blower 21 rotates forward, the second blower 22 rotates reversely, so that the odor circulation is formed in the water removal condensing unit 3, and after the ice on the refrigerating sheet is melted, the sucking and enriching work is performed.
In the third working mode of the present embodiment, as shown in fig. 4, the third air valve 53 and the eighth air valve 58 are in a closed state, the remaining air valves are in an open state, the third interface between the first three-way air valve 323 and the second three-way air valve 324 is closed, at this time, the first adsorption column 411 and the second adsorption column 412 are in a serial state, the dried odor is adsorbed for the first time by the first adsorption column 411, then adsorbed for the second time by the second adsorption column, and finally discharged by the third blower 23. Thus, the trace odor can be enriched twice, and the edible oil has low odor content to be enriched.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (10)
1. A trace odor enrichment device, comprising: the device comprises an air inlet unit (1), a blower unit (2), a dewatering condensing unit (3) and an adsorption unit (4), wherein the blower unit (2) is arranged at the rear end of the air inlet unit (1), and the dewatering condensing unit (3) is respectively connected with the blower unit (2) and the adsorption unit (4); the adsorption unit (4) comprises a liquid nitrogen condensing box and an adsorption column arranged in the liquid nitrogen condensing box, a pipeline system is arranged in the adsorption unit (4), two ends of the adsorption column are connected with the water removal condensing unit (3) by the pipeline system, adsorbed odor is discharged, and an air valve system (5) for controlling the ventilation of the pipeline system is arranged on the pipeline system; the water removal condensing unit (3) and the adsorption unit (4) are arranged in a closed box body, and the blower unit (2) and the air inlet unit (1) are arranged outside the box body.
2. The trace odor enriching apparatus as defined in claim 1, wherein: the liquid nitrogen condensing tanks are at least provided with two, each liquid nitrogen condensing tank is internally provided with an adsorption column, and two ends of each adsorption column are connected through the pipeline system.
3. The trace odor enriching apparatus as defined in claim 2, wherein: the air inlet unit (1) comprises an air collecting port (11), and a dust filter screen (12) and a gas flowmeter (13) are arranged at the rear end of the air collecting port (11).
4. A trace odor enriching apparatus as defined in claim 3, wherein: the blower unit (2) comprises a first blower (21), a second blower (22) and a third blower (23), wherein the first blower (21) and the second blower (22) are arranged at the rear end of the air inlet unit (1), and the third blower (23) is arranged at the rear end of the adsorption unit (4) and is connected with the pipeline system.
5. The trace odor enriching apparatus as defined in claim 4, wherein: the dewatering and condensing unit (3) comprises a first refrigerating sheet group (311) and a second refrigerating sheet group (312), wherein a plurality of refrigerating sheets in the first refrigerating sheet group (311) and the second refrigerating sheet group (312) are arranged in parallel, and the refrigerating sheets are in a fusiform shape.
6. The trace odor enriching apparatus as defined in claim 5, wherein: the dewatering condensing unit (3) further comprises a liquid guide plate (33), a first Y-shaped gas pipe (321) and a second Y-shaped gas pipe (322), the liquid guide plate (33) is arranged between the first refrigerating sheet group (311) and the second refrigerating sheet group (312), one end of the first refrigerating sheet group (311) is communicated with the first air blower (21), the other end of the first refrigerating sheet group is communicated with the first Y-shaped gas pipe (321), one end of the second refrigerating sheet group (312) is communicated with the second air blower (22), the other end of the second refrigerating sheet group is communicated with the second Y-shaped gas pipe (322), the first Y-shaped gas pipe (321) and the second Y-shaped gas pipe (322) are communicated with the pipeline system, the first Y-shaped gas pipe (321) and the second Y-shaped gas pipe (322) are mutually communicated, a first three-way air valve (323) is arranged at the intersection of the first Y-shaped gas pipe (321), and a second three-way air valve (324) is arranged at the intersection of the second Y-shaped gas pipe (322).
7. The trace odor enriching apparatus as defined in claim 6, wherein: the bottom of the dewatering condensing unit (3) is provided with a water storage tank (34).
8. The trace odor enriching apparatus as defined in claim 7, wherein: the pipeline system is of a mesh-shaped pipeline structure, the two adsorption columns are a first adsorption column (411) and a second adsorption column (412) respectively and are arranged on a middle pipeline of the mesh-shaped pipeline structure respectively, and two vertexes of the mesh-shaped pipeline structure are communicated with a first Y-shaped gas pipe (321) and a second Y-shaped gas pipe (322) which correspond to each other respectively.
9. The trace odor enriching apparatus as defined in claim 8, wherein: the air valve system (5) comprises a first air valve (51), a second air valve (52), a third air valve (53), a fourth air valve (54), a fifth air valve (55), a sixth air valve (56), a seventh air valve (57) and an eighth air valve (58); the first air valve (51) and the second air valve (52) are arranged on the middle pipelines at two ends of the first adsorption column (411), the third air valve (53) and the fourth air valve (54) are arranged on the pipelines between the first adsorption column (411) and the second adsorption column (412), the fifth air valve (55) and the sixth air valve (56) are arranged on the middle pipelines at two ends of the second adsorption column (412), the seventh air valve (57) and the eighth air valve (58) are respectively arranged on the other two vertexes of the mesh-shaped pipeline structure, and the third air blower (23) is communicated with the pipeline between the seventh air valve (57) and the eighth air valve (58).
10. The trace odor enriching apparatus as defined in claim 9, wherein: each air valve of the air valve system (5) and the first three-way air valve (323) and the second three-way air valve (324) are controlled to be opened and closed through a PLC system.
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| CN114917720A (en) | 2022-08-19 |
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