CN111706931A - Underground position self-regeneration air purification system and treatment method thereof - Google Patents
Underground position self-regeneration air purification system and treatment method thereof Download PDFInfo
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- CN111706931A CN111706931A CN202010457762.XA CN202010457762A CN111706931A CN 111706931 A CN111706931 A CN 111706931A CN 202010457762 A CN202010457762 A CN 202010457762A CN 111706931 A CN111706931 A CN 111706931A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/64—Airborne particle content
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/66—Volatile organic compounds [VOC]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/76—Oxygen
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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
Abstract
The invention discloses an underground formation self-regeneration air purification system, which comprises: first purification unit that communicates in proper order through main purification pipeline, the second purifies the unit, the third purifies the unit, filter unit, adsorption unit and fourth purify the unit, wherein all install the control valve on the main purification pipeline between two liang of adjacent parts, it has first branch pipeline to purify between the unit and the fourth purification unit in parallel, it has second branch pipeline to purify on the pipeline of unit upper reaches and low reaches in parallel, it has catalytic combustion subassembly to adsorb on unit upper reaches and the low reaches pipeline in parallel, fourth purification unit low reaches are equipped with the purification fan. The invention also discloses a treatment method of the self-regeneration air purification system. The self-regeneration air purification system and the treatment method can efficiently remove various pollutants in the air of the underground position, and improve the air circulation efficiency and the purification efficiency.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to an underground position self-regeneration air purification system and a treatment method thereof.
Background
In some underground spaces, such as large basements, air shelters and the like, the air in the space of such a region is basically in an unventilated state, after long-time use, the air quality in the space is very poor, and the physical health of a user is seriously threatened.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the present invention needs to provide an underground local self-regeneration air purification system and a treatment method thereof, which can efficiently remove various pollutants in the air of the underground local and improve the air circulation efficiency and the purification efficiency.
The invention provides an underground position self-regeneration air purification system, which comprises: first purification unit, second purification unit, third purification unit, filter unit, adsorption unit and the fourth purification unit that communicate through main purification pipeline in proper order, wherein between two liang of adjacent parts all install the control valve on the main purification pipeline, first purification unit with fourth purification unit between the parallel connection have with the first branch pipeline of main purification pipeline intercommunication, fourth purification unit upper reaches and low reaches the main purification pipeline is last to have the second branch pipeline in parallel connection, adsorption unit upper reaches and low reaches the main purification pipeline is last to have catalytic combustion subassembly in parallel connection, fourth purification unit low reaches are kept away from the second branch pipeline be equipped with purifying fan on the main purification pipeline.
According to an embodiment of the invention, the system further comprises a steam purging component and a wet type circulation dust collecting component, wherein the steam purging component is communicated with the main purification pipeline between the second purification unit and the first branch pipeline through a connecting pipeline, and the wet type circulation dust collecting component is arranged on the main purification pipeline upstream of the third purification unit and downstream of the filter unit in parallel through the connecting pipeline.
According to an embodiment of the invention, the first purification unit is a primary filter screen, the second purification unit is a micro-static module, a particulate matter sensor, a first VOCs sensor and an oxygen sensor are sequentially arranged on the main purification pipeline between the downstream of the primary filter screen and the first branch pipeline, and a dust holding saturation determiner is arranged on the main purification pipeline between the micro-static module and the third purification unit.
According to one embodiment of the present invention, the third purification unit is a photocatalyst net, an ultraviolet lamp, a photocatalyst net and an ozone catalyst which are adjacently arranged in sequence, the filtration unit is a cross-flow membrane filtration module, and the cross-flow membrane filtration module is provided with an air pressure difference sensor and a cleaning fan.
According to one embodiment of the invention, the catalytic combustion assembly comprises an air inlet pipeline connected with the downstream of the adsorption unit, a shell connected with the air inlet pipeline, an air outlet pipeline connected with the shell and the upstream of the adsorption unit, and a catalytic combustion agent, a heat exchanger and an electric heater arranged in the shell, wherein a desorption fan and a temperature sensor are arranged on the air inlet pipeline, and an oxygen supplementing fan is arranged on the shell.
According to an embodiment of the present invention, the adsorption unit is an adsorption module, a second VOCs sensor is disposed on the main purification pipeline between the downstream of the adsorption module and the inlet pipeline, a carbon dioxide sensor is disposed on the main purification pipeline between the inlet pipeline and the second branch pipeline, and the fourth purification unit is a carbon dioxide oxygen generation unit.
According to one embodiment of the present invention, the control valve is an electric air valve, wherein the electric air valve is disposed on each of the first branch pipe and the second branch pipe.
The invention also provides a treatment method of the underground formation self-regeneration air purification system, which comprises the following steps:
s1, after the indoor air passes through the primary filter screen, the pollutant in the air is judged to be out of standard by the particulate matter sensor and the first VOCs sensor, if the judgment result is that the pollutant is not out of standard, the oxygen sensor detects that the oxygen content is out of standard, and the step S2 is executed, and if the judgment result is that the pollutant is out of standard, the step S3 is executed;
s2, if the oxygen content exceeds the standard, the system keeps a stop working state, and if the oxygen content exceeds the standard, the system starts a purification fan and a carbon dioxide oxygen generation unit to output clean air;
s3, when the pollutant exceeding judgment result is exceeding, starting a purification fan, after the indoor air passes through the micro-static module, performing exceeding judgment on the dust containing amount in the air by a dust containing saturation judging device, if the judgment result is not exceeding, executing the step S4, if the judgment result is exceeding, closing the purification fan, sequentially starting a steam purging component and a wet type circulating dust collection component, starting for preset time, detecting the dust containing amount in the air again until the dust containing amount exceeds the judgment result;
s4, when the dust capacity exceeds the standard, the indoor air passing through the micro-static module passes through the photocatalyst net, the ultraviolet lamp, the photocatalyst net, the ozone catalyst and the cross flow membrane filtering module in sequence, the air pressure difference sensor judges that the pressure difference in the air exceeds the standard, if the judgment result is that the air does not exceed the standard, the step S5 is executed, if the judgment result is that the air exceeds the standard, the purifying fan is closed, the cleaning fan and the wet type circulating dust collection assembly are started, after the preset time is started, the treated air passes through the cross flow membrane filtering module again, and the pressure difference in the air is detected again until the pressure difference judgment result is that the air does not exceed the standard;
s5, when the pressure difference standard exceeding judgment result is that the standard exceeding is not achieved, the content of VOCs in the gas is detected by a second VOCs sensor to carry out standard exceeding judgment after the gas passes through an adsorption module, if the judgment result is that the standard exceeding is not achieved, the step S6 is executed, if the judgment result is that the standard exceeding is achieved, a purification fan is closed, a desorption fan, an oxygen supplementing fan and a catalytic combustion assembly are started, after the preset time is started, the treated gas passes through the adsorption module again, the content of VOCs in the gas is detected again, and the standard exceeding judgment result of the VOCs is that the standard exceeding is not achieved;
and step S6, when the result of the VOCs standard exceeding judgment is not standard exceeding, the carbon dioxide sensor is used for judging the standard exceeding of the concentration of the carbon dioxide in the gas, if the result of the judgment is not standard exceeding, the clean air is directly discharged, and if the result of the judgment is standard exceeding, the carbon dioxide oxygen generating unit is started, and the clean air is discharged after being processed.
According to an embodiment of the invention, in the step S3, the starting time of the steam purging component and the wet type circulating dust collection component is 2-3 min, and in the step S4, the starting time of the wet type circulating dust collection component is 2-3 min.
According to an embodiment of the invention, in the step S5, the start-up time of the catalytic combustion assembly is 3-5 min.
According to the underground position self-regeneration air purification system and the treatment method thereof, indoor air sequentially passes through the multi-stage purification unit, the filtering unit, the adsorption unit and the like, and detection judgment results of various sensors of different types arranged among all the components, such as pollutant overproof judgment, oxygen content overproof judgment, dust content overproof judgment in gas, pressure difference overproof judgment in gas, VOCs content overproof judgment, carbon dioxide concentration overproof judgment and matching of the steam purging component and the wet type circulating dust collection component, so that various pollutants in the indoor air are quickly and effectively degraded and treated, the circulation efficiency of the indoor air is greatly increased, and the purification efficiency of the indoor air is improved.
Drawings
FIG. 1 is a schematic diagram of a subterranean formation self-regenerating air purification system according to the present invention.
FIG. 2 is a schematic flow diagram of a method of treatment of an underground formation self-regenerating air purification system according to the present invention.
Reference numerals: 1-a first purification unit; 2-a second purification unit; 3-a third purification unit; 4-a filtration unit; 5-an adsorption unit; 6-a fourth purification unit; 7-a steam purge component; 8-wet type circulating dust collection assembly; 50-a catalytic combustion assembly; 100-a main purge line; 101-a first branch conduit; 102-a second branch conduit; 201-purifying fan; 202-cleaning the fan; 203-desorption fan; 204-an oxygen supplementing fan; 301-a particulate matter sensor; 302-a first VOCs sensor; 303-an oxygen sensor; 304-dust holding saturation determiner; 305 — differential air pressure sensor; 306-a second VOCs sensor; 307-a carbon dioxide sensor; 308-a temperature sensor; (401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411) -electric blast gate; 501-catalytic combustion agent; 502-heat exchanger; 503-electric heater.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, a subterranean formation self-regenerating air purification system comprises: a first purification unit 1, a second purification unit 2, a third purification unit 3, a filter unit 4, an adsorption unit 5 and a fourth purification unit 6 which are sequentially communicated through a main purification pipeline 100, wherein control valves are respectively arranged on the main purification pipeline 100 between every two adjacent parts, a first branch pipeline 101 communicated with the main purification pipeline 100 is connected in parallel between the first purification unit 1 and the fourth purification unit 6, a second branch pipeline 102 is connected in parallel on the main purification pipeline 100 at the upstream and the downstream of the fourth purification unit 6, catalytic combustion assemblies 50 are connected in parallel on the main purification pipeline 100 at the upstream and the downstream of the adsorption unit 5, a purification fan 201 is arranged on the main purification pipeline 100 at the downstream of the fourth purification unit 6 far away from the second branch pipeline 102, a steam purging assembly 7 and a wet type circulating dust collecting assembly 8 are further included, the steam purging assembly 7 is communicated with the main purification pipeline 100 between the second purification unit 2 and the first branch pipeline 101 through a connecting pipeline, the wet circulation dust collecting assembly 8 is provided in parallel on the main purification piping 101 upstream of the third purification unit 3 and downstream of the filtration unit 4 through a connection piping.
According to the underground position self-regeneration air purification system and the treatment method thereof, indoor air sequentially passes through the multi-stage purification unit, the filtering unit 4, the adsorption unit 5 and the like, and detection judgment results of various sensors of different types arranged among all the components, such as pollutant overproof judgment, oxygen content overproof judgment, dust content overproof judgment in gas, pressure difference overproof judgment in gas, VOCs content overproof judgment, carbon dioxide concentration overproof judgment and matching of the steam purging component 7 and the wet type circulating dust collection component 8, are adopted, so that various pollutants in the indoor air are rapidly and effectively degraded and treated, the circulation efficiency of the indoor air is greatly increased, and the purification efficiency of the indoor air is improved.
As shown in fig. 1, the first purifying unit 1 is a primary filter screen for primarily filtering indoor air, the second purifying unit 2 is a micro-static module for capturing particulate pollutants in air and having high dust collecting efficiency, the main purifying pipe 100 between the downstream of the primary filter screen and the first branch pipe 101 is sequentially provided with a particulate matter sensor 301, a first VOCs sensor 302 and an oxygen sensor 303, the main purifying pipe 100 between the micro-static module and the third purifying unit 3 is provided with a dust holding saturation determiner 304, it should be understood that the first manufacturing scheme of the dust holding saturation determiner 304 of the present invention is also an optimal scheme, and the principle of the manufacturing scheme is as follows: the method comprises the steps that a timer is set based on the working time of a power supply of an electrostatic module, an optimal optimization time interval is configured in a system through experimental analysis, when the working time reaches set time each time, a dust holding saturation degree determiner 304 determines that the dust holding quantity exceeds the standard, and the system enters a steam purging cleaning program; the second manufacturing scheme of the dust saturation determiner 304 is: referring to the invention patent application with publication number CN107790286A "an electrostatic precipitator with self-adaptive and self-cleaning functions and a dust removing method", the following contents are disclosed: the electrostatic dust collector collects the current breakdown voltage through the self-adaptive controller, so that the electrostatic dust collector always works in a corona state before breakdown, harmful gas pollutants such as PM1, PM2.5, PM10 and ozone in air can be effectively removed, and the civil small self-adaptive dust collector can be used in a fresh air system.
As shown in fig. 1, the third purifying unit 3 is composed of a photocatalyst net, an ultraviolet lamp, a photocatalyst net and an ozone catalyst which are arranged adjacently in sequence, so as to effectively kill various molds and viruses in the gas, and has the functions of deodorization, mildew prevention and air purification.
As shown in fig. 1, the filtration unit 4 is a cross-flow membrane filtration module, the membrane material is preferably but not limited to an organic composite membrane, and mainly aims at further filtering and separating ultrafine particles (particles smaller than 0.3 μm) in the gas, an air pressure difference sensor 305 is arranged on the cross-flow membrane filtration module for detecting the gas pressure difference at two sides of the cross-flow membrane, and a cleaning fan 202 is arranged for blowing and cleaning particles trapped on the surface of the membrane material, when the air is normally filtered, the clean air passing through the membrane enters the adsorption unit 5 through an electric air valve 406, and the waste gas not passing through the membrane takes away part of the fine particles on the surface of the membrane material to enter the wet type circulating dust.
As shown in fig. 1, the catalytic combustion assembly 50 includes an air inlet pipe connected to the downstream of the adsorption unit 5, a housing connected to the air inlet pipe, an air outlet pipe connected to the housing and the upstream of the adsorption unit 5, and a catalytic combustion agent 501, a heat exchanger 502 and an electric heater 503 which are disposed in the housing, wherein the air inlet pipe is provided with a desorption fan 203 and a temperature sensor 308, the housing is provided with an oxygen supplementation fan 204, it should be understood that the first VOCs sensor 302 and the second VOCs sensor 306 sequentially detect the VOCs content in the gas at intervals, when the second detection of the VOCs content determines that the result exceeds the standard, the desorption fan 203 is turned on to desorb the adsorption unit 5, the desorbed high-concentration VOCs gas is introduced into the catalytic combustion assembly 50 and the catalytic combustion assembly 50 is turned on, the electric heater 503 is heated, the catalytic combustion agent 501 catalytically combusts, and the desorption catalytic combustion process is completed within 3-5 min, and when the content of the VOCs is detected again for the second time and the VOCs is judged not to exceed the standard, introducing the gas into the next device.
As shown in fig. 1, the adsorption unit 5 is an adsorption module, the adsorption module is preferably but not limited to a hydrophobic honeycomb molecular sieve, and compared with an activated carbon adsorption module, the molecular sieve has the advantages of strong adsorption capacity, incombustibility, difficult pore channel blockage, high effective adsorption capacity, low regeneration temperature and the like, a second VOCs sensor 306 is arranged on a main purification pipeline 101 between the downstream of the adsorption module and an air inlet pipeline, a carbon dioxide sensor 307 is arranged on a main purification pipeline 100 between the air inlet pipeline and a second branch pipeline 102, a fourth purification unit 6 is a carbon dioxide oxygen generation unit, wherein the oxygen generation unit is preferably but not limited to a potassium superoxide oxygen generation medicament, the medicament is generally in a tablet shape, the medicament is uniformly tiled into a layer when the oxygen generation unit is prepared, and air flow vertically penetrates through the medicament layer, namely, CO generated by consumption and respiration2Simultaneously release O2Reaction with carbon dioxide: 2KO2＋CO2→K2CO3＋3/2O2+ 180.3 kJ; in the presence of moisture in the environment: 2KO2＋3/2H2O+CO2→K2CO3·3/2H2O＋3/2O2＋180.3kJ。
As shown in fig. 1, the control valve is an electric air valve, and the main purification pipeline 101 is sequentially provided with an electric air valve 401, an electric air valve 403, an electric air valve 404, an electric air valve 406, an electric air valve 410, and an electric air valve 411 from front to back and upstream and downstream pipelines of each component, wherein the first branch pipeline 101 is provided with an electric air valve 402, the second branch pipeline 102 is provided with an electric air valve 409, the electric air valve 407 is provided between the cross flow membrane filtration module and the cleaning fan 202, the air inlet pipeline is provided with an electric air valve 408, and the air outlet pipeline is provided with an electric air valve 407.
As shown in fig. 2, a treatment method for a self-regenerating air purification system in a subsurface formation comprises the following steps: in the initial state of the self-regeneration air purification system, the fans and the electric air valves of all parts are in a normally closed state;
s100, after the indoor air passes through the primary filter screen, the pollutant in the air is judged to be out of standard by the particulate matter sensor 301 and the first VOCs sensor 302, if the judgment result is that the pollutant is not out of standard, the oxygen content is detected to be out of standard by the oxygen sensor 303, and the step S200 is executed, and if the judgment result is that the pollutant is out of standard, the step S300 is executed;
s200, if the oxygen content exceeds the standard, judging that the oxygen content does not exceed the standard, keeping the system in a stop working state, if the oxygen content exceeds the standard, starting the purification fan 201 and the carbon dioxide oxygen production unit, and opening the electric air valve 402, the electric air valve 410 and the electric air valve 411 to output clean air;
s300, when the pollutant exceeding judgment result is that the pollutant exceeds the standard, starting a purification fan 201, opening an electric air valve 401, an electric air valve 403, an electric air valve 404 and an electric air valve 406, after the indoor air passes through a micro-static module, carrying out exceeding judgment on the dust containing amount in the air by a dust containing saturation judging device 304, if the judgment result is that the pollutant does not exceed the standard, executing a step S400, if the judgment result is that the pollutant exceeds the standard, closing the purification fan 201, the electric air valve 401 and the electric air valve 403, sequentially starting a steam purging component 7 and a wet type circulating dust collecting component 8, and after the starting time is 2-3 min, detecting the dust containing amount in the air again until the dust containing amount exceeds the standard judgment result is that the pollutant does not exceed the standard;
s400, when the dust capacity exceeds the standard, the indoor air passing through the micro-static module passes through the photocatalyst net, the ultraviolet lamp, the photocatalyst net, the ozone catalyst and the cross-flow membrane filtering module in sequence, the air pressure difference sensor 305 determines that the air pressure difference on two sides of the cross-flow membrane exceeds the standard, wherein the air pressure difference is the air pressure difference on two sides of the cross-flow membrane, the pressure in the membrane is large, the pressure outside the membrane is small, the air is driven to penetrate through the membrane by utilizing the pressure difference, ultrafine particles are intercepted by the membrane, the membrane material is determined to be blocked if the pressure difference on two sides of the membrane is overlarge, purging and cleaning are required, if the determination result is that the air pressure difference on two sides of the membrane is not exceeded the standard, the step S500 is executed, if the determination result is the exceeded standard, the purifying fan 201 is closed, the cleaning fan 202 and the wet type circulating dust collection assembly 8 are started, the electric air valves 404 and 406 are closed, detecting the pressure difference in the gas again until the pressure difference judgment result is that the pressure difference does not exceed the standard;
s500, when the pressure difference standard exceeding judgment result is that the standard exceeding is not achieved, after the gas passes through the adsorption module, the content of VOCs in the gas is detected by the second VOCs sensor 306 to be judged to be standard exceeding, if the judgment result is that the standard exceeding is not achieved, the step S600 is executed, if the judgment result is that the standard exceeding is achieved, the purification fan 201 is closed, the desorption fan 203, the oxygen supplementing fan 204 and the catalytic combustion assembly 50 are started, the electric air valve 407 and the electric air valve 408 are opened, after the starting time is 3-5 min, the treated gas passes through the adsorption module again, the content of VOCs in the gas is detected again, and until the VOCs standard exceeding judgment result is that the standard exceeding is not achieved;
and S600, when the result of the VOCs standard exceeding judgment is not standard exceeding, the carbon dioxide sensor 307 judges the standard exceeding of the concentration of the carbon dioxide in the gas, if the result of the VOCs standard exceeding judgment is not standard exceeding, the electric air valve 409 is opened, clean air is directly discharged, if the result of the VOCs standard exceeding judgment is standard exceeding, the carbon dioxide oxygen production unit is started, the electric air valve 410 and the electric air valve 411 are opened, and the clean air is discharged after being processed.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An underground position self-regeneration air purification system, comprising: first purification unit, second purification unit, third purification unit, filter unit, adsorption unit and the fourth purification unit that communicate through main purification pipeline in proper order, wherein between two liang of adjacent parts all install the control valve on the main purification pipeline, first purification unit with fourth purification unit between the parallel connection have with the first branch pipeline of main purification pipeline intercommunication, fourth purification unit upper reaches and low reaches the main purification pipeline is last to have the second branch pipeline in parallel connection, adsorption unit upper reaches and low reaches the main purification pipeline is last to have catalytic combustion subassembly in parallel connection, fourth purification unit low reaches are kept away from the second branch pipeline be equipped with purifying fan on the main purification pipeline.
2. The underground formation self-regenerating air purification system according to claim 1, further comprising a steam purging component and a wet type circulation dust collecting component, wherein the steam purging component is communicated with the main purification pipeline between the second purification unit and the first branch pipeline through a connecting pipeline, and the wet type circulation dust collecting component is arranged on the main purification pipeline upstream of the third purification unit and downstream of the filtering unit in parallel through the connecting pipeline.
3. The system according to claim 1, wherein the first purifying unit is a primary filter screen, the second purifying unit is a micro-static module, a particulate matter sensor, a first VOCs sensor and an oxygen sensor are sequentially arranged on the main purifying pipeline between the downstream of the primary filter screen and the first branch pipeline, and a dust holding saturation determiner is arranged on the main purifying pipeline between the micro-static module and the third purifying unit.
4. The underground formation self-regeneration air purification system according to claim 1, wherein the third purification unit comprises a photocatalyst net, an ultraviolet lamp, a photocatalyst net and an ozone catalyst which are arranged adjacently in sequence, the filtration unit comprises a cross-flow membrane filtration module, and an air pressure difference sensor and a cleaning fan are arranged on the cross-flow membrane filtration module.
5. The underground formation self-regeneration air purification system according to claim 1, wherein the catalytic combustion assembly comprises an air inlet pipeline connected with the downstream of the adsorption unit, a shell connected with the air inlet pipeline, an air outlet pipeline connected with the shell and the upstream of the adsorption unit, and a catalytic combustion agent, a heat exchanger and an electric heater arranged in the shell, wherein a desorption fan and a temperature sensor are arranged on the air inlet pipeline, and an oxygen supplementing fan is arranged on the shell.
6. The underground formation self-regeneration air purification system according to claim 5, wherein the adsorption unit is an adsorption module, a second VOCs sensor is arranged on the main purification pipeline between the downstream of the adsorption module and the air inlet pipeline, a carbon dioxide sensor is arranged on the main purification pipeline between the air inlet pipeline and the second branch pipeline, and the fourth purification unit is a carbon dioxide oxygen generation unit.
7. An underground formation self-regenerating air cleaning system according to claim 1, characterized in that the control valve is an electric air valve, wherein both the first branch conduit and the second branch conduit are provided with electric air valves.
8. A method of treating an underground local self-regenerating air purification system, comprising the steps of:
s1, after the indoor air passes through the primary filter screen, the pollutant in the air is judged to be out of standard by the particulate matter sensor and the first VOCs sensor, if the judgment result is that the pollutant is not out of standard, the oxygen sensor detects that the oxygen content is out of standard, and the step S2 is executed, and if the judgment result is that the pollutant is out of standard, the step S3 is executed;
s2, if the oxygen content exceeds the standard, the system keeps a stop working state, and if the oxygen content exceeds the standard, the system starts a purification fan and a carbon dioxide oxygen generation unit to output clean air;
s3, when the pollutant exceeding judgment result is exceeding, starting a purification fan, after the indoor air passes through the micro-static module, performing exceeding judgment on the dust containing amount in the air by a dust containing saturation judging device, if the judgment result is not exceeding, executing the step S4, if the judgment result is exceeding, closing the purification fan, sequentially starting a steam purging component and a wet type circulating dust collection component, starting for preset time, detecting the dust containing amount in the air again until the dust containing amount exceeds the judgment result;
s4, when the dust capacity exceeds the standard, the indoor air passing through the micro-static module passes through the photocatalyst net, the ultraviolet lamp, the photocatalyst net, the ozone catalyst and the cross flow membrane filtering module in sequence, the air pressure difference sensor judges that the pressure difference in the air exceeds the standard, if the judgment result is that the air does not exceed the standard, the step S5 is executed, if the judgment result is that the air exceeds the standard, the purifying fan is closed, the cleaning fan and the wet type circulating dust collection assembly are started, after the preset time is started, the treated air passes through the cross flow membrane filtering module again, and the pressure difference in the air is detected again until the pressure difference judgment result is that the air does not exceed the standard;
s5, when the pressure difference standard exceeding judgment result is that the standard exceeding is not achieved, the content of VOCs in the gas is detected by a second VOCs sensor to carry out standard exceeding judgment after the gas passes through an adsorption module, if the judgment result is that the standard exceeding is not achieved, the step S6 is executed, if the judgment result is that the standard exceeding is achieved, a purification fan is closed, a desorption fan, an oxygen supplementing fan and a catalytic combustion assembly are started, after the preset time is started, the treated gas passes through the adsorption module again, the content of VOCs in the gas is detected again, and the standard exceeding judgment result of the VOCs is that the standard exceeding is not achieved;
and step S6, when the result of the VOCs standard exceeding judgment is not standard exceeding, the carbon dioxide sensor is used for judging the standard exceeding of the concentration of the carbon dioxide in the gas, if the result of the judgment is not standard exceeding, the clean air is directly discharged, and if the result of the judgment is standard exceeding, the carbon dioxide oxygen generating unit is started, and the clean air is discharged after being processed.
9. The method for processing the underground formation self-regeneration air purification system according to claim 8, wherein in the step S3, the start-up time of the steam purging component and the wet type circulation dust collecting component is 2-3 min, and in the step S4, the start-up time of the wet type circulation dust collecting component is 2-3 min.
10. The method for processing the underground formation self-regeneration air purification system according to claim 8, wherein in the step S5, the starting time of the catalytic combustion assembly is 3-5 min.
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