CN107362679A - The method and application of a kind of gas-solid cleaning system and its complicated organic exhaust gas of processing - Google Patents
The method and application of a kind of gas-solid cleaning system and its complicated organic exhaust gas of processing Download PDFInfo
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- CN107362679A CN107362679A CN201710616880.9A CN201710616880A CN107362679A CN 107362679 A CN107362679 A CN 107362679A CN 201710616880 A CN201710616880 A CN 201710616880A CN 107362679 A CN107362679 A CN 107362679A
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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
- B01D53/34—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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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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
- B01D53/34—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
- B01D53/8696—Controlling the catalytic process
-
- 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
- B01D2253/102—Carbon
-
- 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
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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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
- B01D2253/20—Organic adsorbents
- B01D2253/204—Metal organic frameworks (MOF's)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The invention discloses the method and application of a kind of gas-solid cleaning system and its complicated organic exhaust gas of processing.The gas-solid cleaning system includes dynamic air-distributing device, gas-solid purifier and the detection means of organic exhaust gas, and the dynamic air-distributing device of organic exhaust gas includes gas generating unit, the second carrier gas bottle and air chest；The first carrier gas bottle and volatilization cylinder are provided with gas generating unit, blender, surge tank, PLC temperature and humidity controllers, blower fan and heater are provided with air chest.Organic liquid and vapor are configured complicated organic exhaust gas by the cleaning system by the dynamic air-distributing device of organic exhaust gas by gas generating unit；The complicated organic exhaust gas of configuration is decomposed using gas-solid purifier, is gathered by detection means and detects the organic exhaust gas after purification.The cleaning system can quickly control the parameter such as the composition of organic exhaust gas, concentration, humidity, flow in gaseous mixture, be easy to organic exhaust gas in more real simulated environment, ensure the degree of accuracy of experimental data.
Description
Technical field
It is complicated more particularly, to a kind of gas-solid cleaning system and its processing the invention belongs to environmental protection technical field
The method of organic exhaust gas and application.
Background technology
Atmosphere pollution is one of China's environmental problem most prominent at present, wherein, VOC (VOCs) is
One important pollution sources, it has low concentration, highly toxic feature, just seriously destroys the living environment of the mankind, threatens
Human health.Effectively to administer VOCs pollutants in air, domestic and international many research workers have been working on this kind of research,
Develop and use absorption method, a variety of purification methods such as photocatalytic method, combustion method.However, because VOCs species is various, discharge capacity
Also varied with discharge intensity etc., no matter therefore using which kind of administering method, before engineering design, all need to carry out sufficient
Lab scale and/or pilot experiment do foundation.Therefore, how the purification of economical and efficient simulation complexity organic exhaust gas has caused related neck
The extensive concern of domain scientific research technical staff.
At present, using adsorb, be catalyzed etc. technology as core gas-solid purification method due to it is simple to operate, energy consumption is low, net
The advantages that changing efficiency high has received significant attention.Simultaneously because caused waste gas is usually arranged at a flow way in production process
Go out, therefore the situation that actual waste gas is cleaned can be more really simulated using mobile phase gas-solid purification means.However, often at present
There is its intrinsic in waste gas configuration, the monitoring of content component etc. for lab scale and/or the gas-solid phase dynamic response system of pilot scale
The shortcomings that, the problems such as reliability for being frequently present of experimental data is low, time-consuming.Such as configuring certain density organic exhaust gas progress mould
It is existing to be frequently present of distribution time length, gas using dynamic air-distributing methods such as water bath with thermostatic control bubbling, serial dilutions during draft experiment
The problems such as bulk concentration fluctuation is big, cause it effectively can not carry out multi-parameter regulation and control to gas, it is difficult to which simulating the true of complexity has
Machine waste gas；Meanwhile conventional manual sampling and analyzing method has human factor and influenceed greatly, samples taken continuity, representativeness are poor,
The real-time status of VOCs purification process can not truly be reflected, easily cause the problem of testing result is not consistent with actual conditions, together
When also increase the labor intensity of researcher.Therefore, research and development one kind is easy to operate, safe and reliable, can monitor on-line, efficiently
Gas-solid phase dynamic purification system, and be applied in VOCs purification and will have very important significance.
The content of the invention
A kind of the defects of the invention aims to overcome prior art, there is provided gas-solid cleaning system.The gas-solid purifies
System includes dynamic air-distributing device, gas-solid purifier and the detection means of organic exhaust gas.
Another object of the present invention is to provide a kind of method realized above-mentioned gas-solid cleaning system and handle complicated organic exhaust gas.
Still a further object of the present invention is the application for providing above-mentioned gas-solid cleaning system.
Above-mentioned purpose of the present invention is achieved by the following technical programs：
A kind of gas-solid cleaning system, including the dynamic air-distributing device of organic exhaust gas, gas-solid purifier and detection means, institute
Stating the dynamic air-distributing device of organic exhaust gas includes gas generating unit, the second carrier gas bottle and air chest；The gas generating unit
The first carrier gas bottle and volatilization cylinder are inside provided with, the volatilization cylinder includes VOCs volatilization cylinders and vapor volatilization cylinder, described
The container with permeable membrane is provided with VOCs volatilization cylinders；Blender, surge tank, PLC Temperature and Humidity Controls are provided with the air chest
Device, blower fan and heater, first carrier gas bottle connect with the volatilization cylinder, and the volatilization cylinder connects with the blender
Logical, second carrier gas bottle connects with the blender, and the blender connects with the surge tank, is provided with the surge tank
PLC humitures are popped one's head in, and the PLC humitures probe is connected with the PLC temperature and humidity controllers, the PLC temperature and humidity controllers
It is connected respectively with the heater and the blower fan；The dynamic air-distributing device of the organic exhaust gas connects with the gas-solid purifier
Connect, the gas-solid purifier is connected with the detection means.
Further, the first pressure regulator valve, the one or three are sequentially provided between first carrier gas bottle and the volatilization cylinder
Connect mouth and flow control valve.
Further, the flow control valve includes first flow regulating valve and second flow regulating valve, and described first
Flow control valve and the second flow regulating valve are communicated in first pressure regulator valve side by side by first three-way interface.
Further, the second pressure regulator valve, the 3rd flow are sequentially provided between second carrier gas bottle and the blender
Regulating valve and the 3rd check valve.
Further, volatilized in the VOCs and be sequentially provided with the first check valve, the one or two between cylinder and the blender
Pass ball valve and the second three-way interface；The vapor volatilize be sequentially provided between cylinder and the blender the second check valve,
Second two-way valve and the 3rd three-way interface.
Further, second three-way interface and the 3rd three-way interface are communicated in the mixing in a series arrangement
Device, first two-way valve and second two-way valve pass through second three-way interface and the described 3rd with parallel way
Three-way interface is communicated in the blender, sets three-way interface to facilitate and draws multichannel VOCs to be measured (such as formaldehyde, styrene)
Enter blender.
Further, the 4th check valve, the both ends of the blender are provided between the blender and the surge tank
Air inlet and gas outlet are provided with, is connected to the gas generating unit and the surge tank, the outlet of the blender
Mouth is connected by the 4th check valve with the surge tank, and the internal mixer is provided with mixed gas piece.
According to the trend of gas, it is adjustable that each VOCs to be measured and vapor are produced into humidity by gas generating unit successively
Organic exhaust gas source of the gas, and be introduced to by gas delivery conduit in blender.
Preferably, the gas generating unit and air chest use stainless steel, the flow control valve use quality
Flowmeter.By setting check valve to prevent that gas backflow enters cylinder in blender, while avoid gas in difference cylinder (each
Kind of VOCs and vapor) mutually gang up；Two-way valve is set to be rapidly introduced into or prevent a certain gas to enter blender, side
Just the component of gas in blender is regulated and controled.
The flow controller, check valve, two-way valve and three-way interface are all disposed within gas-distribution pipe, are controlled by flow
The input of device regulation and control gas and output quantity；The refluence of gas is avoided by check valve；Gas is quickly controlled by two-way valve
Introduce；Facilitate the increase and decrease of gas species by triple valve, so as to accurately and easily control organic exhaust gas in gaseous mixture into
Point, the parameter such as concentration, humidity, flow, organic exhaust gas in more real simulated environment.
Further, safety valve and pressure gauge are additionally provided with the surge tank.The preferred spring loaded safety valve of safety valve,
By setting safety valve to prevent surge tank internal pressure from, higher than setting pressure, playing a part of safeguard protection and steady air flow.
Further, the gas outlet of the upper end setting perforate of the surge tank, the perforate and air chest passes through escape pipe
Connection, is provided with the 4th flow control valve between the surge tank and the gas outlet of the air chest.
Further, the port of PLC humitures probe and the escape pipe described in the surge tank is in same level
On position, be advantageous to more really measure the temperature and humidity of gaseous mixture at gas outlet.
The container with permeable membrane seals equipped with organic liquid corresponding to VOCs to be measured through permeable membrane, is positioned over VOCs
The bottom of volatilization cylinder；The gas piping of first carrier gas bottle gos deep into the bottom of the volatilization cylinder, in volatilization cylinder
Steam mixes, and the upper end open through the volatilization cylinder draws gas.The outlet of first carrier gas bottle and the volatilization cylinder
First flow regulating valve is set between entrance, by controlling the flow of gas and the penetrating power of permeable membrane, controls the stream of gas
Speed and concentration.
Further, multiple VOCs steam generations gas circuits can be added as needed in the gas generating unit, and are passed through
Three-way interface is incorporated in blender；The air inlet of the blender and gas outlet are arranged on its both ends, and it is internal filled with mixed
Gas piece, different types of gas can be made to enter blender, be flowed out again from gas outlet after flowing through whole internal mixer, built-in is mixed
The gas that gas piece can flow through blender is sufficiently mixed, and gas is uniformly mixed more quickly.
Further, the gas-solid purifier includes absorbing unit and/or photocatalysis unit.
The absorbing unit includes adsorbent and flows through formula fixed bed, and the adsorbent, which is loaded in, described flows through formula fixed bed
On.
The photocatalysis unit includes fixing for exciting the xenon lamp of photochemical catalyst, photochemical catalyst and flowing through formula photocatalysis
Bed, the photochemical catalyst be loaded in it is described flow through in formula photocatalysis fixed bed, it is described to be used to exciting the xenon lamp of photochemical catalyst, described
Photochemical catalyst and the formula photocatalysis fixed bed that flows through are arranged successively from top to down.
Further, the detection means includes gas chromatograph, gas chromatograph-mass spectrometer and flight time mass spectrum.
The method that above-mentioned gas-solid cleaning system handles complicated organic exhaust gas, including step in detail below：
S1. by organic liquid and water by the dynamic air-distributing device of organic exhaust gas, obtaining the adjustable complexity of temperature humidity has
Machine waste gas；
S2. by above-mentioned complicated organic exhaust gas by gas-solid purifier, by photochemical catalyst and/or adsorbent by organic waste
Gas capture enrichment is decomposed, the organic exhaust gas after being purified；
S3. gathered by detection means and detect the organic exhaust gas after purification.
Preferably, organic liquid described in step S1 is styrene, ethylbenzene, benzene, o- dimethylbenzene, m- dimethylbenzene or p- diformazans
One or more of benzene, the photochemical catalyst are TiO2, Fe2O3、TiO2The TiO of/C or MOFs loads2One or more of；It is described
Adsorbent is one or more of zeolite molecular sieve, porous carbon, CNT or MOFs.
Application of the described gas-solid cleaning system in complicated organic exhaust gas is handled.
Compared with prior art, the invention has the advantages that：
1. the present invention controls the temperature of whole air distribution system by PLC auto temperature controlled systems, accurate by flow controller
The flow of each road gas is controlled, and monitors concentration, the component of exit gas in real time using on-line monitoring system.By temperature, humidity,
The information such as concentration are shown in man-machine interface, it is ensured that whole system gas is stable and flow velocity it is uniform, steady, and then can accurately,
The parameter such as the composition of organic exhaust gas, concentration, humidity, flow in gaseous mixture is rapidly controlled, is easy to more real simulated environment
Middle organic exhaust gas；The time of researcher is also saved simultaneously, is reduced artificial operating error, is ensured the accurate of experimental data
Degree.
2. being simulated by the organic exhaust gas purifying system of the present invention to the discharge characteristics of organic exhaust gas, and test selection
Purification techniques to the clean-up effect of waste gas, optimize the purification technique of organic exhaust gas, acquisition can be directed to different emission sources and discharge
The effective treatment technology and handling process of feature, strong experimental data can be provided for organic waste-gas purification, improve organic exhaust gas
The operating efficiency of purification.
3. organic exhaust gas dynamic gas-solid purifier provided by the invention combines compact, overall air distribution system and humiture control
System processed is all positioned in same casing, and compact is easy to remove, can effectively reduce the design and use cost of equipment.
Brief description of the drawings
Fig. 1 is the structural representation of gas-solid cleaning system of the present invention.
Wherein, 101 be the first carrier gas bottle, 102 be the second carrier gas bottle, 201 be the first pressure regulator valve, 202 be the second pressure regulator valve,
301 be the first three-way interface, 302 be the second three-way interface, 303 be the 3rd three-way interface, 401 be first flow regulating valve,
402 be second flow regulating valve, 403 be the 3rd flow control valve, 404 be the 4th flow control valve, 5 be VOCs volatilization cylinder, 6
It is the first check valve for the container with permeable membrane, 701,702 be the second check valve, 703 be the 3rd check valve, 704 is the 4th single
To valve, 8 be blender, 9 be pressure gauge, 10 be blender safety valve, 11 be PLC humitures probe, 12 be surge tank, 13 be
Blower fan, 14 be PLC temperature and humidity controllers, 15 be the first two-way valve, 16 be the second two-way valve, 17 be heater, 18 be water
Steam volatilization cylinder, 19 be air chest, 20 be gas generating unit, 21 be gas-solid purifier, 22 be the 4th three-way interface, 23
For flow through formula fixed bed, 24 be the 5th three-way interface, 25 be detection means.
Fig. 2 is the test result for making adsorbent adsorption cleaning styrene using P25.
Fig. 3 is the test result that styrene is purified using the photochemical catalytic oxidation of P25 photocatalysts.
Embodiment
Technical scheme is described in further detail with reference to specific embodiments and the drawings, but the present invention
Embodiment not limited to this.
Embodiment 1
As shown in figure 1, the invention provides a kind of gas-solid cleaning system, including the dynamic air-distributing device of organic exhaust gas, gas
Gu purifier and detection means.The dynamic air-distributing device of the organic exhaust gas is connected with the gas-solid purifier, the gas
Gu purifier is connected with the detection means.
Wherein, dynamic air-distributing device includes gas generating unit 20, the second carrier gas bottle 102 and air chest 19.Second carrier gas
Diluent gas, such as air, oxygen etc. are loaded in bottle 102, primarily serves the effect of dilution organic exhaust gas.The gas generating unit
The first carrier gas bottle 101 and volatilization cylinder are provided with 20, the volatilization cylinder includes VOCs volatilization cylinders 5 and vapor volatilization cylinder
18, the VOCs volatilizations cylinder 5 is interior to be provided with the container 6 with permeable membrane.The diluent gas such as nitrogen are loaded in first carrier gas bottle 101,
Mainly the VOCs evaporated in the cylinder that volatilizees is brought out.
Blender 8, surge tank 12, PLC temperature and humidity controllers 14, blower fan 13 and heater are provided with the air chest 19
17, first carrier gas bottle 101 connects with the volatilization cylinder, and the volatilization cylinder connects with the blender 8, and described second
Carrier gas bottle 102 connects with the blender 8, and the blender 8 connects with the surge tank 12, is provided with the surge tank 12
PLC humitures probe 11, the PLC humitures probe 11 are connected with the PLC temperature and humidity controllers 14, the PLC humitures
Controller 14 is connected with the heater 17 and the blower fan 13 respectively.
Gas generating unit 20 is connected with the air inlet of blender 8, first carrier gas bottle 102 and the blender 8
Air inlet be connected, the gas outlet of the blender 8 is connected with the air inlet of the surge tank 12, and the surge tank 12 is logical
Cross the gas outlet of the 4th flow control valve 404 connection air chest.
The first pressure regulator valve 201, the first threeway are sequentially provided between first carrier gas bottle 101 and the volatilization cylinder 5
Interface 301 and flow control valve.The flow control valve includes first flow regulating valve 401 and second flow regulating valve 402, institute
State first flow regulating valve 401 and the second flow regulating valve 402 is communicated in institute side by side by first three-way interface 301
State the first pressure regulator valve 201.First carrier gas bottle 101 connects the VOCs volatilization cylinders 5 and institute respectively by the three-way interface 301
State vapor volatilization cylinder 18.
One interface of three-way interface 301 is connected with VOCs volatilization cylinders 5 by first flow regulating valve 401,
Another interface of the three-way interface 301 is connected with vapor volatilization cylinder 18 by second flow regulating valve 402；
Wherein, the band infiltration film container 6 equipped with VOCs liquid seals through permeable membrane, is positioned over the bottom of VOCs volatilization cylinders, passes through control
The flow velocity of first flow regulating valve 401 processed and with infiltration the permeable membrane of film container 6 penetrating power control VOCs gases concentration with
Flow velocity, the flow velocity and concentration of the flow control vapor by controlling second flow regulating valve 402.
Volatilized in the VOCs and be sequentially provided with the first check valve 701, the first two-way ball between cylinder 5 and the blender 8
The three-way interface 302 of valve 15 and second；Volatilized in the vapor and the second list is sequentially provided between cylinder 18 and the blender 8
To valve 702, the second two-way valve 16 and the 3rd three-way interface 303.Second three-way interface 302 and the 3rd three-way interface
303 are communicated in blender 8 in a series arrangement, and first two-way valve 15 and second two-way valve 16 are in parallel
The blender 8 is communicated in by second three-way interface 301 and the 3rd three-way interface 303, sets three-way interface can
It is convenient that multichannel gas (VOCs or vapor) is introduced into blender.
In addition, can be added in the gas generating unit 20 multiple VOCs steam generations gas circuits (it is similar be parallel to 401,5,
6th, 701 and 15 gas circuit), and be incorporated to by three-way interface in the blender 8.Gas generating unit 20 and the phase of blender 8
Connection, wherein, pass through the second three-way interface 302 between the gas outlet of the VOCs volatilizations cylinder 5 and the air inlet of the blender 8
An interface be connected, the gas outlet of vapor volatilization cylinder 18 and the air inlet of the blender 8 connect by three
Mouth 303 is connected.
VOCs volatilizees is respectively arranged with the first check valve 701, two-way valve 15 between cylinder 5 and the three-way interface 302,
Second check valve 702 and two-way valve 16 are set respectively between the vapor volatilization cylinder 18 and the three-way interface 303, led to
Cross and set the first check valve 701, the second check valve 702 to prevent that gas backflow enters VOCs volatilization cylinders 5 and water in blender
Steam volatilizees cylinder 18, while avoids mutually ganging up for gas in difference cylinder；Set two-way valve 16 can quickly introduce or
Vapor is prevented to enter blender, the humidity of gas in conveniently regulating and controlling blender.
The 4th check valve 704 is provided between the blender 8 and the surge tank 12, the both ends of the blender 8 are set
Air inlet and gas outlet are equipped with, is connected to the gas generating unit 20 and the surge tank 12, the blender 8
Gas outlet is connected by the 4th check valve 704 with the surge tank 12, and the 4th check valve 704 can prevent surge tank
Gas backflow enters in blender 8 in 12.
The second pressure regulator valve 202 is sequentially provided between second carrier gas bottle 201 and the blender 8, the 3rd flow is adjusted
Save the check valve 703 of valve 403 and the 3rd.Second carrier gas bottle 102 passes through the second air pressure regulator 202 and the phase of three-way interface 303
Connection, the 3rd flow control valve 403 and the 3rd check valve 703 are placed between the two, by controlling the 3rd flow control valve 403 to control
Gas flow rate processed, so as to regulate and control the gas concentration and flow velocity of final blender 8, check valve can prevent that gas falls in blender 8
Stream, while avoid mutually ganging up for different gas circuit gases.
According to the trend of gas, each VOCs to be measured and vapor are produced into source of the gas by gas generating unit 20 successively, and
It is introduced to by gas delivery conduit in blender 8.
The gas generating unit 20 and air chest 19 use stainless steel, the flow control valve use quality flow
Meter.By setting check valve to prevent that gas backflow enters cylinder in blender, while avoid the mutual of gas in difference cylinder
Gang up；Two-way valve is set to be rapidly introduced into or prevent a certain gas to enter blender, gas in conveniently regulating and controlling blender
Component.
The flow controller, check valve, two-way valve and three-way interface are all disposed within gas-distribution pipe, are controlled by flow
The input of device regulation and control gas and output quantity；The refluence of gas is avoided by check valve；Gas is quickly controlled by two-way valve
Introduce；Facilitate the increase and decrease of gas species by three-way interface, so as to accurately and easily control organic exhaust gas in gaseous mixture
The parameters such as composition, concentration, humidity, flow, organic exhaust gas in more real simulated environment.
The container 6 with permeable membrane seals equipped with organic liquid through permeable membrane, is positioned over the bottom of VOCs volatilization cylinders 5
Portion；The gas piping of first carrier gas bottle 101 gos deep into the bottom of the volatilization cylinder, is mixed with the steam in volatilization cylinder,
Upper end open through the volatilization cylinder draws gas.The outlet of first carrier gas bottle 101 and the volatilization cylinder entrance it
Between first flow regulating valve 201 is set, by controlling the flow of gas and the penetrating power of permeable membrane, control gas flow velocity and
Concentration.
Multiple VOCs steam generations gas circuits can be added as needed in the gas generating unit 20, and pass through three-way interface
It is incorporated in blender；The air inlet of the blender 8 and gas outlet are arranged on its both ends, and it is internal filled with mixed gas piece, can
Different types of gas is entered blender, flowed out again from gas outlet after flowing through whole internal mixer, built-in mixed gas piece can
The gas for flowing through blender is sufficiently mixed, and gas is uniformly mixed more quickly.
In addition, the air chest 19 is additionally provided with gas-distribution pipe and adjusting means for gas transport between each device, pass through control
Temperature in air chest 19 processed, change the temperature of gas and maintain the stability of system.
The adjusting means includes pressure regulator valve, flow control valve and two-way valve, and the pressure regulator valve includes the first pressure regulator valve
201 and second pressure regulator valve 202, the flow control valve include first flow regulating valve 401, second flow regulating valve the 402, the 3rd
The flow control valve 404 of flow control valve 403 and the 4th；The two-way valve includes the first two-way valve 15 and the second two-way valve
16。
Be additionally provided with check valve in the air chest 19, the check valve include the first check valve 701, the second check valve 702,
3rd check valve 703 and the 4th check valve 704.
By setting check valve to prevent that gas backflow enters cylinder in blender, while avoid gas in difference cylinder
Mutually gang up；Set two-way valve quickly can introduce or prevent a certain gas to enter blender, gas in conveniently regulating and controlling blender
The component of body.
First carrier gas bottle 101 and volatilization cylinder between be provided with the first pressure regulator valve 201, first flow regulating valve 401,
Second flow regulating valve 402 and three-way interface 301, set three-way interface is convenient multichannel gas is introduced into blender.
First flow regulating valve 401 is set between the outlet of first carrier gas bottle 101 and volatilization cylinder entrance, passes through control
The flow of gas processed and the penetrating power of permeable membrane, control the flow velocity and concentration of gas.
Safety valve 10 and pressure gauge 9 are additionally provided with the surge tank 12.The 10 preferred spring loaded safety valve of safety valve, lead to
Crossing setting safety valve 10 can prevent the internal pressure of surge tank 12 from, higher than pressure is set, playing the work of safeguard protection and steady air flow
With.
The upper end of the surge tank 12 sets perforate, and the perforate is connected with the gas outlet of air chest by escape pipe, institute
State and be provided with the 4th flow control valve 404 between the gas outlet of surge tank 12 and the air chest.
PLC Temperature Humidity Sensors 11 are adjacent with mixed gas outlet in the surge tank 12, the PLC humitures probe 11
Port with the escape pipe is advantageous to more really measure at gas outlet the temperature of gaseous mixture and wet in the same horizontal position
Degree.
PLC temperature sensors 11 are connected with the heater 17 in the casing and the blower fan 13, according to the setting PLC
The temperature automatic adjustment mixture temperature of temperature and humidity controller 14.Surge tank 12 passes through the 4th flow control valve 404 and air chest
Gas outlet is connected, by controlling the 4th flow control valve 404 to control the rate of outflow of final gaseous mixture.
The gas-solid purifier 21 includes absorbing unit and/or photocatalysis unit.
The absorbing unit includes adsorbent and flows through formula fixed bed 23, and the adsorbent, which is loaded in, described to be flowed through formula and fix
On bed 23.
The photocatalysis unit is included for exciting the xenon lamp of photochemical catalyst, photochemical catalyst and flowing through formula photocatalysis fixed bed
23, the photochemical catalyst be loaded in it is described flow through in formula photocatalysis fixed bed 23, xenon lamp, the institute for being used to excite photochemical catalyst
State photochemical catalyst and the formula photocatalysis fixed bed 23 that flows through is arranged successively from top to down.
Preferably, the organic liquid is one in styrene, ethylbenzene, benzene, o- dimethylbenzene, m- dimethylbenzene or p- dimethylbenzene
More than kind, the photochemical catalyst is TiO2, Fe2O3、TiO2The TiO of/C or MOFs loads2One or more of；The adsorbent is
One or more of zeolite molecular sieve, porous carbon, CNT or MOFs.
The detection means be the detectable purification with automatic sampling system before and after and purification process in organic exhaust gas
Composition, concentration, the instrument of the relevant information such as intermediate.
Surge tank 12 is connected by flow control valve 404 with gas-solid purifier 21.It is provided with gas-solid purifier 21
4th three-way interface 22, the three-way interface 24 of fixed bed 23 and the 5th.In entering for the outlet of dynamic air-distributing case 19 and detection means 25
Mouth is provided with three-way interface 24, and the three-way interface 22 and 24 of setting carries sampling pad, sampled manually when can conveniently need.Gas-solid
Purifier 21 is sequentially connected by the 4th three-way interface 22, the three-way interface 24 of fixed bed 23 and the 5th, wherein, the He of fixed bed 23
Three-way interface 22 and 24 is attached in a manner of knob.
Embodiment 2
Organic Waste Gas Pollution source is styrene, using adsorption technology with the TiO of business2(P25) it is adsorbent, using implementation
The gas-solid cleaning system that example 1 provides carries out adsorption cleaning test experiments to the styrene waste gases that concentration is 36ppmv.
Styrene liquid is taken in the container 6 with permeable membrane, the container 6 with permeable membrane is then positioned over VOCs volatilizations
The bottom of cylinder 5.Two-way valve 15 is opened, closes two-way valve 16, regulation first flow control valve 401 to certain flow rate, regulation
To certain flow rate, the styrene vapor through the dilution of the first carrier gas bottle 101 (being loaded with nitrogen) carries 3rd flow controller 403 with second
Gas cylinder 102 (being loaded with air) enters in blender through triple valve, enters surge tank 12 after being mixed with the blender 8 of mixed gas piece
Secondary mixing is inside carried out again, it is ensured that gas concentration and the stability of flow velocity.Mixed gas goes out through gas-solid purifier 21
Gas port 24 enters detection means 25 and gathers waste gas sample.After styrene waste gases configuration is stable, P25 adsorbents are taken in fixed bed
23, carry out absorption test.VOCs at the import 22 and outlet 24 of the gas-solid purifier 21 gathered according to detection means 25 is dense
Adsorption desorption breakthrough curve corresponding to degree drafting, as shown in Figure 2.Fig. 2 is the test for making adsorbent adsorption cleaning styrene using P25
As a result.As can be seen from Figure 2, it is relatively stable that data are penetrated to the adsorption desorption of styrene using P25 as adsorbent using the method for the present invention.
Embodiment 3
Organic Waste Gas Pollution source is styrene, using photocatalysis oxidation technique, using the P25 of business as photochemical catalyst, is investigated
The equipment that embodiment 1 provides carries out photochemical catalytic oxidation to the styrene waste gases that concentration is 36ppmv and purifies test experiments.
P25 is identical with embodiment 2 to the dark adsorption experiment process of styrene.Treat that P25 has penetrated to styrene adsorption desorption
Cheng Hou, unlatching are disposed vertically in the 300w xenon lamps above fixed bed at 11cm, photochemical catalytic oxidation test are carried out, through photochemical catalytic oxidation
Gas outlet 24 of the styrene waste gases afterwards through gas-solid purifier 21 enters detection means 25 and gathers waste gas sample.Reacted gas
Body a part introduce can continuous sampling flight time mass spectrum, detection styrene gas in Photocatalytic Oxidation caused by
Between species, another part gas introduce with automatic sampler gas chromatograph detection light-catalyzed reaction after styrene concentration
Change, as shown in Figure 3.Fig. 3 is the test result that styrene is purified using the photochemical catalytic oxidation of P25 photocatalysts.From Fig. 3
Understand, in the preceding 20min that xenon source is opened, the degradation rate of styrene is improved to 85% rapidly, then tended towards stability substantially
90% or so.Illustrate to be decomposed with the carry out styrene of reaction, concentration gradually reduces, and finally tends towards stability.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine and simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
- A kind of 1. gas-solid cleaning system, it is characterised in that dynamic air-distributing device of the gas-solid cleaning system including organic exhaust gas, Gas-solid purifier and detection means, the dynamic air-distributing device of the organic exhaust gas include gas generating unit, the second carrier gas bottle And air chest；The first carrier gas bottle and volatilization cylinder are provided with the gas generating unit, the volatilization cylinder volatilizees including VOCs Cylinder and vapor volatilization cylinder, the VOCs volatilizations cylinder is interior to be provided with the container with permeable membrane；It is provided with the air chest mixed Clutch, surge tank, PLC temperature and humidity controllers, blower fan and heater, first carrier gas bottle connect with the volatilization cylinder, institute State volatilization cylinder to connect with the blender, second carrier gas bottle connects with the blender, and the blender delays with described Tank connection is rushed, being provided with PLC humitures in the surge tank pops one's head in, the PLC humitures probe and the PLC temperature and humidity controllers Connection, the PLC temperature and humidity controllers are connected with the heater and the blower fan respectively；The dynamic air-distributing of the organic exhaust gas Device is connected with the gas-solid purifier, and the gas-solid purifier is connected with the detection means.
- 2. gas-solid cleaning system according to claim 1, it is characterised in that in first carrier gas bottle and the Volatile Gas The first pressure regulator valve, the first three-way interface and flow control valve are sequentially provided between cylinder；The flow control valve includes first flow Regulating valve and second flow regulating valve, the first flow regulating valve and the second flow regulating valve pass through first threeway Interface is communicated in first pressure regulator valve side by side；The second pressure regulation is sequentially provided between second carrier gas bottle and the blender Valve, the 3rd flow control valve and the 3rd check valve；Volatilized in the VOCs and be sequentially provided with the first check valve, the first two-way valve and the two or three between cylinder and the blender Connect mouth；The vapor volatilize be sequentially provided between cylinder and the blender the second check valve, the second two-way valve and 3rd three-way interface；Second three-way interface and the 3rd three-way interface are communicated in the blender in a series arrangement, institute State the first two-way valve and second two-way valve passes through second three-way interface and the 3rd threeway with parallel way Orifice is in the blender；Be provided with the 4th check valve between the blender and the surge tank, the blender be provided at both ends with air inlet and Gas outlet, is connected to the gas generating unit and the surge tank, and the gas outlet of the blender passes through the described 4th Check valve is connected with the surge tank, and the internal mixer is provided with mixed gas piece.
- 3. gas-solid cleaning system according to claim 1, it is characterised in that be additionally provided with safety valve and pressure on the surge tank Power table；The upper end of the surge tank sets perforate, and the perforate is connected with the gas outlet of air chest by escape pipe, the buffering The 4th flow control valve is provided between the gas outlet of tank and the air chest；The PLC humitures described in the surge tank are popped one's head in Port with the escape pipe is in the same horizontal position.
- 4. gas-solid cleaning system according to claim 1, it is characterised in that the gas-solid purifier includes absorbing unit And/or photocatalysis unit.
- 5. gas-solid cleaning system according to claim 4, it is characterised in that the absorbing unit includes adsorbent and flowed through Formula fixed bed, the adsorbent are loaded in described flow through in formula fixed bed.
- 6. gas-solid cleaning system according to claim 4, it is characterised in that the photocatalysis unit includes being used for exciting light The xenon lamp of catalyst, photochemical catalyst and formula photocatalysis fixed bed is flowed through, the photochemical catalyst, which is loaded in, described flows through formula photocatalysis In fixed bed, it is described be used to exciting the xenon lamp of photochemical catalyst, the photochemical catalyst and it is described flow through formula photocatalysis fixed bed from Arranged successively under and.
- 7. gas-solid cleaning system according to claim 1, it is characterised in that the detection means include gas chromatograph, Gas chromatograph-mass spectrometer and flight time mass spectrum.
- 8. the method that complicated organic exhaust gas is handled according to any one of the claim 1-7 gas-solid cleaning systems, it is characterised in that Including step in detail below：S1. organic liquid and water are obtained into the adjustable complicated organic waste of temperature humidity by the dynamic air-distributing device of organic exhaust gas Gas；S2. above-mentioned complicated organic exhaust gas is caught organic exhaust gas by photochemical catalyst and/or adsorbent by gas-solid purifier Obtain enrichment or decompose, the organic exhaust gas after being purified；S3. gathered by detection means and detect the organic exhaust gas after purification.
- 9. the method that gas-solid cleaning system handles complicated organic exhaust gas according to claim 8, it is characterised in that in step S1 The organic liquid is one or more of styrene, ethylbenzene, benzene, o- dimethylbenzene, m- dimethylbenzene or p- dimethylbenzene, and the light is urged Agent is TiO2, Fe2O3、TiO2The TiO of/C or MOFs loads2One or more of；The adsorbent is zeolite molecular sieve, porous One or more of carbon, CNT or MOFs.
- 10. application of the gas-solid cleaning system in complicated organic exhaust gas is handled described in claim any one of 1-7.
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| CN201710616880.9A CN107362679A (en) | 2017-07-26 | 2017-07-26 | The method and application of a kind of gas-solid cleaning system and its complicated organic exhaust gas of processing |
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| CN201710616880.9A CN107362679A (en) | 2017-07-26 | 2017-07-26 | The method and application of a kind of gas-solid cleaning system and its complicated organic exhaust gas of processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110596312A (en) * | 2019-08-23 | 2019-12-20 | 广东工业大学 | Fast flowing atmosphere reaction system and application thereof |
| US20210331116A1 (en) * | 2020-04-28 | 2021-10-28 | Yancheng Institute Of Technology | System and method for procesing industrial waste gas based on combination of photoelectrocatalysis and biotrickling filter |
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| CN110596312A (en) * | 2019-08-23 | 2019-12-20 | 广东工业大学 | Fast flowing atmosphere reaction system and application thereof |
| CN110596312B (en) * | 2019-08-23 | 2023-12-29 | 广东工业大学 | Fast flowing atmosphere reaction system and application thereof |
| US20210331116A1 (en) * | 2020-04-28 | 2021-10-28 | Yancheng Institute Of Technology | System and method for procesing industrial waste gas based on combination of photoelectrocatalysis and biotrickling filter |
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