CN114950130B - High saturation volume adsorption purification device of well low concentration VOCS - Google Patents
High saturation volume adsorption purification device of well low concentration VOCS Download PDFInfo
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- CN114950130B CN114950130B CN202210696791.0A CN202210696791A CN114950130B CN 114950130 B CN114950130 B CN 114950130B CN 202210696791 A CN202210696791 A CN 202210696791A CN 114950130 B CN114950130 B CN 114950130B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
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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
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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
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D53/047—Pressure swing adsorption
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
- B01D2267/30—Same type of filters
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- 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
Abstract
The invention provides a high saturation capacity adsorption purification device for medium-low concentration VOCS, which comprises: the waste gas is subjected to coarse effect filtration through a multistage activated carbon filter, subjected to photocatalytic oxidation reaction after the coarse effect filtration, subjected to secondary filtration through a molecular sieve after the photocatalytic oxidation reaction, and input into a buffer tank after the secondary filtration is finished, and input into a pressure swing adsorption device for treatment after pressure accumulation through the buffer tank; the pressure swing adsorption device comprises a pressure swing valve and an adsorber assembly; the method utilizes the difference of adsorption characteristics of gas components on different adsorbents and the characteristic that the adsorption quantity changes with different pressures to realize the separation and adsorption of the gas through pressure transformation. During this time, the adsorption can be carried out under different pressures, the pressure of which can be controlled in two ways, the first being the concentration of the exhaust gas entering the pressure swing valve and the second being the adsorption capacity of the adsorber with the adsorption process.
Description
Technical Field
The invention relates to the technical field of medium-low concentration VOCS treatment, in particular to a high saturation adsorption purification device for medium-low concentration VOCS.
Background
The active carbon, molecular sieve or photocatalysis adopted in the general treatment of the VOCS with medium and low concentration is used for treatment, and the photocatalysis oxidation technology is to form chemical reaction through the action of light, so that harmful substances contained in the volatile organic waste gas are continuously converted into harmless compounds, and the pollution of the volatile organic waste gas is greatly reduced. Molecular sieves are a type of adsorbent with uniform micropores and mainly composed of silicon, aluminum, oxygen and other metal cations, and the pore size of the adsorbent is equivalent to that of a common molecular size, so that the molecular sieves have good adsorption effect like activated carbon, but VOCS cannot be fully adsorbed by one or more combination treatments, and 40% -50% of VOCS is released.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for constructing WEBGIS three-dimensional visualization based on Cesium.
The technical scheme adopted by the invention is as follows:
a high saturation capacity adsorption purification device of a medium-low concentration VOCS comprises:
the waste gas is subjected to coarse effect filtration through a multistage activated carbon filter, subjected to photocatalytic oxidation reaction after the coarse effect filtration, subjected to secondary filtration through a molecular sieve after the photocatalytic oxidation reaction, and input into a buffer tank after the secondary filtration is finished, and input into a pressure swing adsorption device for treatment after pressure accumulation through the buffer tank; the pressure swing adsorption device comprises a pressure swing valve and an adsorber assembly;
the control device is used for acquiring concentration signals in the buffer tank based on the concentration sensor, processing the concentration signals to obtain concentration analog signals, comparing the concentration analog signals with a set concentration threshold value, generating a control instruction according to a comparison result by the control device to control the amount of exhaust gas entering the pressure changing valve, enabling the exhaust gas flowing into the pressure changing valve to have instantaneous first pressurizing pressure under the pressurizing of the first pressurizing pump, fully mixing the exhaust gas and quantitative adsorbent under the instantaneous first pressurizing pressure, and spraying the mixture into an adsorber arranged on the adsorber assembly through a spray pipe under the pressure changing valve.
Further, the pressure swing adsorption apparatus has:
the pressure-changing valve is provided with a flow passage at the middle part of the pressure-changing valve, and a spray pipe is arranged at the lower part of the flow passage;
a first pressurizing pipeline is arranged at one side of the pressure changing valve, the first pressurizing pipeline is communicated with the flow passage,
the pressure-variable valve is also provided with a dosing pipeline which is communicated with the upper part of the spray pipe, and a second pressurizing pipeline is arranged on the dosing pipeline; the second pressurizing pipeline is communicated with the dosing pipe.
Further, the adsorber assembly comprises an adsorption shell, the pressure changing valve is arranged on the upper portion of the adsorption shell, a rotary table is arranged in the adsorption shell, a plurality of adsorbers are arranged on the rotary table, a sealing plate is arranged at the bottom of the rotary table, the sealing plate separates the inside of the adsorption shell from the lower side portion to form an electric chamber, a servo motor is arranged in the electric chamber and is connected with a speed reducer, and the speed reducer is connected with the rotary table through a coupling.
Further, a protection pipe is arranged at the middle part of the sealing plate, a bearing seat is arranged in the protection pipe, and a rotating rod on the speed reducer passes through the bearing seat to be connected with the coupling.
Further, the first pressurizing pipeline is connected with a first pressurizing pump;
the second pressurizing pipe is connected with a second pressurizing pump;
the dosing pipe is connected with a dosing metering pump, and the dosing metering pump is connected with a drug storage tank;
the first pressure pump, the second pressure pump and the dosing metering pump are respectively connected with the control device.
Further, the adsorber has:
a cylindrical adsorbent body, which is provided with a plurality of holes,
a V-shaped adsorption port is arranged at the upper part of the cylindrical adsorption body;
the cylindrical adsorbent is formed by honeycomb holes from sparse to dense from V-shaped adsorption ports outwards.
Further, the control device has:
the acquisition module is used for being connected with the concentration sensor to acquire concentration signals in the buffer tank;
the conversion module is used for converting the concentration signal into a concentration analog signal;
the comparison module is used for comparing the concentration analog signal with a set concentration threshold value to form a comparison result;
the control instruction generation module is used for generating a control instruction according to the comparison result, wherein the control instruction comprises a first control signal, a second control signal, a third control signal and a fourth control signal;
the first control signal is used for controlling the opening of a sixth electromagnetic valve, and re-entering quantitative waste gas into the pressure-variable valve;
the second control signal is used for controlling the first pressurizing pump to pressurize the waste gas flowing into the pressure changing valve under the pressurizing of the first pressurizing pump so that the waste gas has an instantaneous first pressurizing pressure;
the third control signal is used for controlling the dosing metering pump to give quantitative adsorbent to the dosing pipe;
the fourth control signal is used for controlling the second pressurizing pump to give an instantaneous second pressurizing pressure to the dosing pipe, and the adsorbent is sprayed into the spray pipe under the instantaneous second pressurizing pressure.
Further, the servo motor rotates according to the set power under the control of the control device, the servo motor rotates to drive the speed reducer to rotate, the speed reducer drives the rotating rod to rotate, the rotating rod drives the coupler to rotate, the coupler drives the rotary table to rotate, and the rotary table rotates to enable the next adsorber to rotate to the lower portion of the spray pipe automatically after each adsorption.
In the application, the separation adsorption of the gas is realized by pressure conversion by utilizing the difference of adsorption characteristics of the gas components on different adsorbents and the characteristic that the adsorption quantity changes with different pressures. During this time, the adsorption can be carried out under different pressures, the pressure of which can be controlled in two ways, the first being the concentration of the exhaust gas entering the pressure swing valve and the second being the adsorption capacity of the adsorber with the adsorption process. In this application, the exhaust gas flowing into the pressure swing valve is pressurized by the first pressurization pump such that the exhaust gas has an instantaneous first pressurization pressure, the exhaust gas is fully mixed with the quantitative adsorbent under the instantaneous first pressurization pressure and is sprayed into the adsorber arranged on the adsorber assembly by the spray pipe under the pressure swing valve, and the adsorber is pressed into the cylindrical adsorber under the instantaneous pressure.
In order to achieve better adsorption effect, in the application, a V-shaped adsorption port (big end down) is formed in the upper portion of a cylindrical adsorbent, and the cylindrical adsorbent is formed by honeycomb holes from sparse to dense from inside to outside along the V-shaped adsorption port. The V-shaped adsorption port enables the exhaust gas to be completely contained under the transient pressure, the honeycomb holes from the sparse to the dense can enable the exhaust gas to flow from inside to outside under the transient pressure, and saturated adsorption is formed from the denser outside.
Drawings
The following drawings are illustrative of the invention and are not intended to limit the scope of the invention, in which:
FIG. 1 is a schematic diagram of a system of the present invention;
FIG. 2 is a schematic diagram of a pressure swing adsorption apparatus according to the present invention;
FIG. 3 is a schematic view of the structure of the adsorber of the invention.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples, which are given by way of illustration, in order to make the objects, technical solutions, design methods and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the present invention provides a high saturation capacity adsorption purification apparatus for medium and low concentration VOCS, comprising: the waste gas is subjected to coarse filtration through a multistage activated carbon filter, subjected to photocatalytic oxidation reaction after the coarse filtration, subjected to secondary filtration through a molecular sieve after the photocatalytic oxidation reaction, and input into a buffer tank 112 after the secondary filtration is finished, and input into a pressure swing adsorption device for treatment after pressure accumulation through the buffer tank 112; the pressure swing adsorption apparatus includes a pressure swing valve 117 and an adsorber assembly 119;
and a control device which collects the concentration signal in the buffer tank 112 based on the concentration sensor, processes the concentration signal based on the concentration signal to obtain a concentration analog signal, compares the concentration analog signal with a set concentration threshold value according to the comparison result, generates a control command according to the comparison result to control the amount of the exhaust gas entering the pressure changing valve, simultaneously makes the exhaust gas flowing into the pressure changing valve 117 have an instantaneous first pressurizing pressure under the pressurizing of the first pressurizing pump 114, fully mixes the exhaust gas with the quantitative adsorbent under the instantaneous first pressurizing pressure, and is sprayed into an adsorber 206 arranged on the adsorber assembly by a spray pipe 205 under the pressure changing valve 117, and then rotates a rotary table 207 so that the next adsorber moves to the lower part of the spray pipe to finish the next round of adsorption.
The separation adsorption of the gas is realized by utilizing the difference of adsorption characteristics of the gas components on different adsorbents and the characteristic that the adsorption quantity changes along with the pressure difference. During this time, the adsorption can be carried out under different pressures, the pressure of which can be controlled in two ways, the first being the concentration of the exhaust gas entering the pressure swing valve and the second being the adsorption capacity of the adsorber with the adsorption process. In this application, the exhaust gas flowing into the pressure swing valve is pressurized by the first pressurization pump such that the exhaust gas has an instantaneous first pressurization pressure, the exhaust gas is fully mixed with the quantitative adsorbent under the instantaneous first pressurization pressure and is sprayed into the adsorber arranged on the adsorber assembly by the spray pipe under the pressure swing valve, and the adsorber is pressed into the cylindrical adsorber under the instantaneous pressure.
In the above, the pressure swing adsorption apparatus includes:
the variable-pressure valve body 200, the middle part of the variable-pressure valve body 200 is provided with a flow channel 201, and the lower part of the flow channel 201 is provided with a spray pipe 205;
a first pressurizing pipe 204 is provided at one side of the variable pressure valve body 200, the first pressurizing pipe 204 is communicated with the flow channel 201,
a dosing pipeline 203 is further arranged on the pressure changing valve body 200, the dosing pipeline 203 is communicated with the upper part of the spray pipe 205, and a second pressurizing pipeline 202 is arranged on the dosing pipeline 203; the second pressurization line 202 communicates with the dosing line 203.
The adsorber assembly comprises an adsorption shell, a pressure changing valve is arranged on the upper portion of the adsorption shell, a rotary disc 207 is arranged in the adsorption shell, a plurality of adsorbers 206 are arranged on the rotary disc 207, a sealing plate 208 is arranged at the bottom of the rotary disc, the sealing plate 208 separates the inside of the adsorption shell from the lower side into an electric chamber, a servo motor 212 is arranged in the electric chamber, the servo motor 212 is connected with a speed reducer 210, and the speed reducer 210 is connected with the rotary disc 207 through a coupling 209. A protection tube 211 is provided in the middle of the sealing plate 208, a bearing block is provided in the protection tube 211, and a rotation rod on the speed reducer 210 passes through the bearing block and is connected with a coupling.
The first pressurizing pipeline 204 is connected with the first pressurizing pump 114; the second pressurizing line 202 is connected to the second pressurizing pump 115; the dosing pipe is connected with a dosing metering pump 116 which is connected with a drug storage tank 117; the first pressure pump, the second pressure pump and the dosing metering pump are respectively connected with the control device.
In the above, the adsorber 206 includes:
a cylindrical adsorbent 300, a V-shaped adsorption port 301 being provided at an upper portion of the cylindrical adsorbent; the cylindrical adsorbent 300 is formed by honeycomb holes from sparse to dense from the V-shaped adsorption port outwards.
In the above, in order to achieve better adsorption effect, in the present application, the upper portion of the cylindrical adsorbent is provided with a V-shaped adsorption port (big end down), and the cylindrical adsorbent is composed of honeycomb holes from sparse to dense from inside to outside along the V-shaped adsorption port. The V-shaped adsorption port enables the exhaust gas to be completely contained under the transient pressure, the honeycomb holes from the sparse to the dense can enable the exhaust gas to flow from inside to outside under the transient pressure, and saturated adsorption is formed from the denser outside.
The control device comprises:
the acquisition module is used for being connected with the concentration sensor to acquire concentration signals in the buffer tank;
the conversion module is used for converting the concentration signal into a concentration analog signal;
the comparison module is used for comparing the concentration analog signal with a set concentration threshold value to form a comparison result;
the control instruction generation module is used for generating a control instruction according to the comparison result, wherein the control instruction comprises a first control signal, a second control signal, a third control signal and a fourth control signal;
the first control signal is used for controlling the opening of a sixth electromagnetic valve, and re-entering quantitative waste gas into the pressure-variable valve;
the second control signal is used for controlling the first pressurizing pump to pressurize the waste gas flowing into the pressure changing valve under the pressurizing of the first pressurizing pump so that the waste gas has an instantaneous first pressurizing pressure;
the third control signal is used for controlling the dosing metering pump to give quantitative adsorbent to the dosing pipe;
the fourth control signal is used for controlling the second pressurizing pump to give an instantaneous second pressurizing pressure to the dosing pipe, and the adsorbent is sprayed into the spray pipe under the instantaneous second pressurizing pressure.
Further, the servo motor rotates according to the set power under the control of the control device, the servo motor rotates to drive the speed reducer to rotate, the speed reducer drives the rotating rod to rotate, the rotating rod drives the coupler to rotate, the coupler drives the rotary table to rotate, and the rotary table rotates to enable the next adsorber to rotate to the lower portion of the spray pipe automatically after each adsorption.
The principle of the application is as follows: the middle-low concentration VOCS waste gas is subjected to multistage coarse filtration by a treatment pipeline 100 through a first activated carbon adsorption tank 102, a second activated carbon adsorption tank 104 and a third activated carbon adsorption tank 106, and in the process, a first electromagnetic valve 101, a second electromagnetic valve 103 and a third electromagnetic valve 105 are normally open; the waste gas after coarse filtration is conveyed to a photocatalytic reaction device 108 through a fourth electromagnetic valve 107, the photocatalytic reaction device 108 is provided with a multistage photocatalytic component, the photocatalytic oxidation enables the organic compound with the surface volatility to generate oxidation-reduction reaction, and the photocatalytic property of the catalyst enables the organic compound to be finally oxidized into water, carbon dioxide and inorganic micromolecular substances under the light condition of a specific wavelength. The use of UV ultraviolet light beams causes the cleavage of xylenes, toluene, benzene, etc. having a volatile molecular chain structure, and such molecular chains and high molecular compounds are converted into low-molecular compounds such as water and carbon dioxide. Since water vapor is generated during the photocatalytic oxidation process, molecular sieves are added for secondary filtration in the subsequent steps, the purpose of the secondary filtration is to make the organic matters and water vapor in the exhaust gas be adsorbed again, and in order to increase the adsorption effect, a booster pump 111 is further provided between the photocatalytic reaction device 108 and the molecular sieve adsorption tank 110 (the fifth solenoid valve 109 between the photocatalytic reaction device 108 and the molecular sieve adsorption tank 110 is normally open).
After secondary filtration, the waste gas is input into a buffer tank, the waste gas is stored in the buffer tank and then is input into a pressure swing adsorption device for processing, the control device collects concentration signals in the buffer tank based on a concentration sensor, the concentration signals are processed based on the concentration signals to obtain concentration analog signals, the concentration analog signals are compared with a set concentration threshold value according to the concentration analog signals, the control device generates a control instruction according to a comparison result to control the amount of waste gas entering a pressure swing valve, meanwhile, the waste gas flowing into the pressure swing valve is pressurized by a first pressurizing pump to enable the waste gas to have an instantaneous first pressurizing pressure, the waste gas and quantitative adsorbent are fully mixed under the instantaneous first pressurizing pressure and are sprayed into an adsorber arranged on an adsorber assembly of the pressure swing valve through a spray pipe, then a turntable is rotated, the next adsorber is enabled to move to the lower part of the spray pipe, the next round of adsorption is completed, the pressure swing adsorption of each time is guaranteed to be carried out by an independent adsorber, and the adsorber is enabled to have enough adsorbing time for the previous adsorber, and the adsorption process is enabled to be more efficient. The principle of the application is to realize separation and adsorption of gas by pressure conversion by utilizing the difference of adsorption characteristics of gas components on different adsorbents and the characteristic that the adsorption quantity changes with different pressures. During this time, the adsorption can be carried out under different pressures, the pressure of which can be controlled in two ways, the first being the concentration of the exhaust gas entering the pressure swing valve and the second being the adsorption capacity of the adsorber with the adsorption process. In this application, the exhaust gas flowing into the pressure swing valve is pressurized by the first pressurization pump such that the exhaust gas has an instantaneous first pressurization pressure, the exhaust gas is fully mixed with the quantitative adsorbent under the instantaneous first pressurization pressure and is sprayed into the adsorber arranged on the adsorber assembly by the spray pipe under the pressure swing valve, and the adsorber is pressed into the cylindrical adsorber under the instantaneous pressure.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (5)
1. A high saturation capacity adsorption purification device of medium-low concentration VOCS, comprising:
the waste gas is subjected to coarse effect filtration through a multistage activated carbon filter, subjected to photocatalytic oxidation reaction after the coarse effect filtration, subjected to secondary filtration through a molecular sieve after the photocatalytic oxidation reaction, and input into a buffer tank after the secondary filtration is finished, and input into a pressure swing adsorption device for treatment after pressure accumulation through the buffer tank; the pressure swing adsorption device comprises a pressure swing valve and an adsorber assembly;
the control device is used for acquiring a concentration signal in the buffer tank based on the concentration sensor, processing the concentration signal to obtain a concentration analog signal, comparing the concentration analog signal with a set concentration threshold value, generating a control instruction according to a comparison result by the control device to control the amount of exhaust gas entering the pressure-changing valve, simultaneously enabling the exhaust gas flowing into the pressure-changing valve to have an instantaneous first pressurizing pressure under the pressurizing of the first pressurizing pump, fully mixing the exhaust gas and a quantitative adsorbent under the instantaneous first pressurizing pressure, and spraying the mixture into an adsorber arranged on the adsorber assembly through a spray pipe under the pressure-changing valve;
the pressure swing adsorption apparatus has:
the pressure-changing valve is provided with a flow passage at the middle part of the pressure-changing valve, and a spray pipe is arranged at the lower part of the flow passage;
a first pressurizing pipeline is arranged at one side of the pressure changing valve, the first pressurizing pipeline is communicated with the flow passage,
the pressure-variable valve is also provided with a dosing pipeline which is communicated with the upper part of the spray pipe, and a second pressurizing pipeline is arranged on the dosing pipeline; the second pressurizing pipeline is communicated with the dosing pipe; the second booster pump gives an instantaneous second pressurization pressure to the dosing pipe, and the adsorbent is sprayed into the spray pipe under the instantaneous second pressurization pressure;
the first pressurizing pipeline is connected with a first pressurizing pump;
the second pressurizing pipe is connected with a second pressurizing pump;
the dosing pipe is connected with a dosing metering pump, and the dosing metering pump is connected with a drug storage tank;
the first pressure pump, the second pressure pump and the dosing metering pump are respectively connected with the control device;
the adsorber assembly comprises an adsorption shell, the pressure changing valve is arranged on the upper portion of the adsorption shell, a rotary table is arranged in the adsorption shell, a plurality of adsorbers are arranged on the rotary table, a sealing plate is arranged at the bottom of the rotary table, the sealing plate separates the inside of the adsorption shell from the lower side into an electric chamber, a servo motor is arranged in the electric chamber and connected with a speed reducer, and the speed reducer is connected with the rotary table through a coupling.
2. The high saturation capacity adsorption purification device of low-and medium-concentration VOCS according to claim 1, wherein a protection pipe is arranged in the middle of the sealing plate, a bearing seat is arranged in the protection pipe, and a rotating rod on the speed reducer passes through the bearing seat and is connected with the coupling.
3. The high saturation capacity adsorption purification apparatus for medium-low concentration VOCS according to claim 1, wherein the adsorber comprises:
a cylindrical adsorbent body, which is provided with a plurality of holes,
a V-shaped adsorption port is arranged at the upper part of the cylindrical adsorption body;
the cylindrical adsorbent is formed by honeycomb holes from sparse to dense from V-shaped adsorption ports outwards.
4. The medium-low concentration VOCS high saturation amount adsorption purification apparatus according to claim 1, wherein said control means has:
the acquisition module is used for being connected with the concentration sensor to acquire concentration signals in the buffer tank;
the conversion module is used for converting the concentration signal into a concentration analog signal;
the comparison module is used for comparing the concentration analog signal with a set concentration threshold value to form a comparison result;
the control instruction generation module is used for generating a control instruction according to the comparison result, wherein the control instruction comprises a first control signal, a second control signal, a third control signal and a fourth control signal;
the first control signal is used for controlling the opening of a sixth electromagnetic valve, and re-entering quantitative waste gas into the pressure-variable valve;
the second control signal is used for controlling the first pressurizing pump to pressurize the waste gas flowing into the pressure changing valve under the pressurizing of the first pressurizing pump so that the waste gas has an instantaneous first pressurizing pressure;
the third control signal is used for controlling the dosing metering pump to give quantitative adsorbent to the dosing pipe;
the fourth control signal is used for controlling the second pressurizing pump to give an instantaneous second pressurizing pressure to the dosing pipe, and the adsorbent is sprayed into the spray pipe under the instantaneous second pressurizing pressure.
5. The adsorption purification device for high saturation capacity of medium-low concentration VOCS according to claim 1, wherein the servo motor rotates under the control of the control device according to a set power, the rotation of the servo motor drives the speed reducer to rotate, the speed reducer drives the rotating rod to rotate, the rotating rod drives the coupling to rotate, the coupling drives the turntable to rotate, and the turntable rotates to automatically enable the next adsorber to rotate to the lower part of the spray pipe after each adsorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696791.0A CN114950130B (en) | 2022-06-20 | 2022-06-20 | High saturation volume adsorption purification device of well low concentration VOCS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696791.0A CN114950130B (en) | 2022-06-20 | 2022-06-20 | High saturation volume adsorption purification device of well low concentration VOCS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114950130A CN114950130A (en) | 2022-08-30 |
| CN114950130B true CN114950130B (en) | 2023-05-23 |
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| JP2007000340A (en) * | 2005-06-23 | 2007-01-11 | Teijin Pharma Ltd | Pressure swing adsorption type oxygen concentrator |
| CN109647131A (en) * | 2019-02-27 | 2019-04-19 | 大连大学 | A kind of device of pulse jet pressure swing adsorption purge gas |
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| CN110075707A (en) * | 2019-04-30 | 2019-08-02 | 北京日新达能技术有限公司 | A kind of plastics oil smoke VOC waste gas treatment device and treatment process |
| CN210079179U (en) * | 2019-05-15 | 2020-02-18 | 恩科思奈(苏州)环境科技有限公司 | V-shaped filtering and adsorbing device |
| CN211612149U (en) * | 2019-10-29 | 2020-10-02 | 中船海洋动力部件有限公司 | VOCs waste gas treatment system for coating workshop |
| CN110882627A (en) * | 2019-12-19 | 2020-03-17 | 广西江邕环保科技有限公司 | Combined volatile organic compound purification treatment equipment |
| CN212712747U (en) * | 2020-05-20 | 2021-03-16 | 四川金叶生物防治有限公司 | Nitrogen making device for storage system |
| CN215842367U (en) * | 2021-06-18 | 2022-02-18 | 山西新华防化装备研究院有限公司 | Desorption unit is inhaled to expanded V type |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007000340A (en) * | 2005-06-23 | 2007-01-11 | Teijin Pharma Ltd | Pressure swing adsorption type oxygen concentrator |
| CN109647131A (en) * | 2019-02-27 | 2019-04-19 | 大连大学 | A kind of device of pulse jet pressure swing adsorption purge gas |
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