CN108607345A - A kind of device and method of degradation mine stope hydrogen sulfide gas - Google Patents
A kind of device and method of degradation mine stope hydrogen sulfide gas Download PDFInfo
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- CN108607345A CN108607345A CN201810326702.7A CN201810326702A CN108607345A CN 108607345 A CN108607345 A CN 108607345A CN 201810326702 A CN201810326702 A CN 201810326702A CN 108607345 A CN108607345 A CN 108607345A
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- hydrogen sulfide
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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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
- B01D53/007—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 irradiation
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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Abstract
The present invention provides a kind of device and method of degradation mine stope hydrogen sulfide gas, utilizes ultraviolet degradation working face hydrogen sulfide gas.Several ultraviolet light emission devices are placed in working face, open ultraviolet light emission device, give off ultraviolet light, hydrogen sulfide gas of degrading.The ultraviolet light emission device includes pedestal, magnetic core, magnetic coil, bulb housing, lampshade, explosion-resistant enclosure, radio-frequency generator；Magnetic core and radio-frequency generator, magnetic core and radio-frequency generator electrical connection are set on pedestal, are connected with cable on radio-frequency generator, cable is for connecting power supply；Magnetic coil is wound on magnetic core, bulb housing is provide with outside magnetic coil, and bulb housing open end is tightly connected with pedestal, filled with ultraviolet light emission gas in the sealing space that bulb housing is formed with pedestal；Pedestal, bulb housing and radio-frequency generator are respectively positioned in explosion-resistant enclosure, and one end of explosion-resistant enclosure is open end and is tightly connected with lampshade that blind end and the lampshade of bulb housing are oppositely arranged.
Description
Technical field
The invention belongs to field of mine safety, be related to a kind of mine abatement of noxious gases device and method, more particularly to one
The device and method of kind degradation mine stope hydrogen sulfide gas.
Background technology
Hydrogen sulfide (H2S) gas is one of coal mine toxic and harmful gas, with the rapid development of mining mechanization degree, coal
Mine mining rate and mining depth increase year by year, and hydrogen sulfide gas enrichment in coal seam causes hydrogen sulfide gas in exploitation process to gush extremely
Go out disaster, certain threat is constituted to coal miner life and health and mine safety production.
Currently, including both at home and abroad mainly sprinkling lye for the control measures of mine hydrogen sulfide gas disaster, reinforcing ventilation
Deng cannot fundamentally solve the problems, such as that hydrogen sulfide pours out.Hydrogen sulfide gas is administered using lye, one is extensive coals
Layer note alkali technique notes alkali technique since hydrogen sulfide gas content is relatively low in coal seam using extensive coal seam, not only causes serious
Waste, and less effective；Another kind is the method that lye is sprayed in working face, since hydrogen sulfide gas is mainly caving with coal cutting
Process pours out, but working face spread of spray is limited, and the lye or mist that spray cannot always rest in work space of planes,
Ground is dropped to after a period of time, cannot effectively neutralize the hydrogen sulfide gas of working face spatial dimension, and efficiency is low.
Invention content
For problems of the prior art, the present invention provides a kind of degradation mine stope hydrogen sulfide gas
Device and method, using ultraviolet degradation working face hydrogen sulfide gas, device and method simplicity, efficient, strong applicability solve work
Make hydrogen sulfide gas Abnormal Methane Emission problem in the exploitation process of face.
The present invention is to be achieved through the following technical solutions：
A method of degradation mine stope hydrogen sulfide gas includes the following steps：
Step 1, several ultraviolet light emission devices are placed in working face；
Step 2, ultraviolet light emission device is opened, ultraviolet light is given off, hydrogen sulfide gas of degrading.
Preferably, in step 1, the ultraviolet light emission direction of two neighboring ultraviolet light emission device, one is longitudinal direction, another
A is lateral.
Preferably, in step 1, a ultraviolet light emission device, each adjacent two hydraulic pressure branch are placed on each hydraulic support
A ultraviolet light emission device is placed between frame.
Preferably, step 2 is specially：
Gush out concentration according to working face hydrogen sulfide gas and determines that hydrogen sulfide gas by the time t needed for ultraviolet degradation, is surveyed
Working face wind speed v is measured, coalcutter downwind side degradation working range L is calculated according to formula L=vt, opens coalcutter leeward
The ultraviolet light emission device that side is degraded in working range L gives off ultraviolet light, hydrogen sulfide gas of degrading；
Wherein, hydrogen sulfide gas is gushed out concentration according to working face hydrogen sulfide gas by the time t needed for ultraviolet degradation and is taken
3~8s of value.
Preferably, further include step 3, by the induction of the thermal infrared human inductor that coordinates with ultraviolet light emission device whether
There is personnel's process, when the personnel of having sensed pass through, corresponding ultraviolet light emission device is stopped, extensive again after personnel pass through
It returns to work work.
A kind of device of degradation mine stope hydrogen sulfide gas, including pedestal, magnetic core, magnetic coil, bulb housing, lamp
Cover, explosion-resistant enclosure, radio-frequency generator；
Magnetic core and radio-frequency generator, magnetic core and radio-frequency generator electrical connection are set on pedestal, are connected on radio-frequency generator
Cable, cable is for connecting power supply；Magnetic coil is wound on magnetic core, and bulb housing, bulb housing open end and pedestal are provide with outside magnetic coil
It is tightly connected, filled with ultraviolet light emission gas in the sealing space that bulb housing is formed with pedestal；Pedestal, bulb housing and high frequency occur
Device is respectively positioned in explosion-resistant enclosure, and one end of explosion-resistant enclosure is open end and is tightly connected with lampshade, the blind end and lamp of bulb housing
Cover is oppositely arranged.
Preferably, thermal infrared human inductor is additionally provided on pedestal, thermal infrared human inductor includes inductor, signal choosing
Cover half block, logic controller and lamp road break-make device；Inductor is for receiving infrared signal and outputing it to signal chosen module；
The infrared signal received is amplified and is converted into on-off model by signal chosen module, and signal chosen module is by switching value
Signal is exported to logic controller；Logic controller is according to the on-off model received, the break-make of control lamp road break-make device；Lamp
Road break-make device is used to control the break-make of the power supply of radio-frequency generator.
Preferably, cooling fin is connected on radio-frequency generator, cooling fin is stretched out from explosion-resistant enclosure.
Preferably, explosion-resistant enclosure is flared structure, and larger diameter end is open end and is tightly connected with lampshade.
Preferably, bulb housing is quartz lamp blister, and lampshade is quartzy lampshade, and ultraviolet light emission gas is mercury vapour.
Compared with prior art, the present invention has technique effect beneficial below：
The method of mine stope degradation hydrogen sulfide gas of the present invention, it is purple by being arranged on stope
Outer light emitting devices, ultraviolet light emission device gives off the ultraviolet light of different wave length when work, and ultraviolet light being capable of radiation vulanization hydrogen
Gush out and diffusion space, one side Direct Pyrolysis hydrogen sulfide gas, on the other hand, by wave-length coverage in 200nm purples below
Oxygen molecule in outer photodegradation air generates free oxygen, i.e. active oxygen, so need to be with because of the taken positron-electron imbalance of free oxygen
Oxygen molecule combines, and then generates ozone, and hydrogen sulfide gas occurs redox reaction with ozone and generates innocuous substance.Side of the present invention
Method can irradiate always work space of planes by ultraviolet degradation hydrogen sulfide gas, compared to sprinkling lye, reinforce the tradition such as ventilation
Means have the advantages that simple, efficient, input cost is low etc., the hydrogen sulfide gas that can effectively degrade in working face spatial dimension.
Further, the ultraviolet light emission direction of ultraviolet light emission device is set to the mode of horizontal and vertical cooperation,
Can Enhanced Radiation Reduced Blast range as far as possible, eliminate dead angle.
Further, by hydrogen sulfide gas by needed for ultraviolet degradation time and working face wind speed determine degradation work
Range, only opens the ultraviolet light emission device in working range, on the one hand ensures that hydrogen sulfide gas acts on enough under ultraviolet light
Time, the ultraviolet light emission device on the other hand degraded outside working range are not turned on, and avoid the wasting of resources.
Further, since the wavelength of infrared light is long compared with ultraviolet light, it is not easy to it is scattered, it is red under same operating environment
The propagation distance of outer light is longer than the propagation distance of ultraviolet light, therefore can be by the thermal infrared people that coordinates with ultraviolet light emission device
Body inductor has detected whether personnel's process, when thermal infrared human inductor senses that personnel pass through, corresponding ultraviolet light
Emitter is stopped, and resumes work again after personnel pass through.Ultraviolet light emission dress is adjusted by thermal infrared human inductor
The working condition set, avoids ultraviolet light from damaging personnel.
Mine stope degradation stink damp body device of the present invention is a kind of ultraviolet light emission device, is used
When, after radio-frequency generator powers on, high-frequency current is generated, the magnetic core for being wound with magnetic coil is sent to through feeder line, to generate one
A electromagnetic field of high frequency, electromagnetic field of high frequency excite the ultraviolet light emission gas atom in bulb housing to reach excitation state, the original of excitation state
When son returns to ground state, launch ultraviolet light, hydrogen sulfide gas is removed using ultraviolet light.Setting lampshade and explosion-resistant enclosure in outside,
One side ultraviolet light can be radiate by lampshade, and on the other hand, whole device can be isolated from the outside world by explosion-resistant enclosure, from
And the flammable explosive gas such as the spark that the electrical equipments such as radio-frequency generator generate and extraneous gas is avoided to contact, prevent dangerous thing
Therefore generation, ensure production safety.The device has stabilized intensity, and circuit is simple, long lifespan, and volume miniaturization etc. is excellent
Point.
Further, thermal infrared human inductor is set, and 7 front end of thermal infrared human inductor is inductor, for detecting
Infrared signal, signal chosen module are connect with inductor, for the infrared signal of inductor output to be amplified and be converted into
On-off model indicates that working face has personnel's process when signal chosen module output logic signal 1；When signal chosen module
When output logic signal 0, indicate that working face passes through without personnel；The letter that logic controller is detected by acquiring signal chosen module
Number, control lamp road break-make device realize someone by when be automatically closed ultraviolet lamp, when no personnel, opens ultraviolet lamp.When specifically used,
When the personnel of sensing pass through, the ultraviolet light emission device of unlatching is automatically cut off the power, and is resumed work again after personnel pass through, to
Ultraviolet light is avoided to damage personnel.
Description of the drawings
Fig. 1 is the schematic diagram of the device of present invention degradation mine stope hydrogen sulfide gas；
Fig. 2 is the arrangement schematic diagram of the device of present invention degradation mine stope hydrogen sulfide gas；
Fig. 3 is thermal infrared human inductor schematic diagram of the present invention.
Wherein：1. bulb housing；2. magnetic core；3. lampshade；4. explosion-resistant enclosure；5. magnetic coil；6. ultraviolet light emission gas；7. heat
Infrared human body inductor；8. pedestal；9. radio-frequency generator；10. cooling fin；11. cable；12. hydraulic support；13. ultraviolet light is sent out
Injection device.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
Applying the component of example can be arranged and be designed by a variety of different configurations.Therefore, the present invention to providing in the accompanying drawings below
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of the selected of the present invention
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, for mine stope of the present invention degradation stink damp body device, including bulb housing 1,
Magnetic core 2, lampshade 3, explosion-resistant enclosure 4, magnetic coil 5, ultraviolet light emission gas 6, pedestal 8, radio-frequency generator 9, cable 11.
Magnetic core 2 is arranged in 8 upper surface of pedestal, and radio-frequency generator 9 is arranged in lower surface, and magnetic core 2 and radio-frequency generator 9 are electrically connected,
Cable 11 is connected on radio-frequency generator 9, cable 11 is for connecting power supply；Magnetic coil 5 is wound on magnetic core 2, is provide with outside magnetic coil 5
Bulb housing 1,1 open end of bulb housing are tightly connected with pedestal 8, filled with ultraviolet light in the sealing space that bulb housing 1 is formed with pedestal 8
Emit gas 6；Pedestal 8, bulb housing 1 and radio-frequency generator 9 are respectively positioned in explosion-resistant enclosure 4, and one end of explosion-resistant enclosure 4 is open end
And be tightly connected with lampshade 3, blind end and the lampshade 3 of bulb housing 1 are oppositely arranged.
In use, the device is placed in working face suitable position, after radio-frequency generator 9 powers on, high-frequency current is generated,
It is sent to the magnetic core 2 for being wound with magnetic coil 5 through feeder line, to generate an electromagnetic field of high frequency, excites the mercury atom in bulb housing 1,
When being excited mercury atom return ground state, launch ultraviolet light, the hydrogen sulfide for working face of degrading.
In this example, cooling fin 10 is connected also on radio-frequency generator 9, the heat generated when working can be distributed in time
It goes out, in order to avoid so that device is generated damage since temperature is excessively high.
In one embodiment, explosion-resistant enclosure 4 is barrel-like structure, and an open end is connect with lampshade 3, and another open end is used for
Stretch out cooling fin 10.In another embodiment, explosion-resistant enclosure 4 is flared structure, open end and the lampshade 3 of larger diameter end
It is tightly connected, the open end of smaller diameter end is for stretching out cooling fin 10.Explosion-resistant enclosure 4 is designed as flared structure, Ke Yi
It reduces explosion-resistant enclosure 4 under the premise of explosion-proof to the greatest extent to block ultraviolet light, increases ultraviolet radiation range.
In this example, ultraviolet light emission gas 6 is mercury vapour, and bulb housing 1 is quartz lamp blister, and lampshade 3 is quartzy lampshade.
In this example, which is additionally provided with thermal infrared human inductor 7, and thermal infrared human inductor 7 is integrated in pedestal 8
On, and provide power supply for it.As shown in figure 3, thermal infrared human inductor 7 includes inductor, signal chosen module, logic control
The roads Qi Hedeng break-make device；Inductor is for receiving infrared signal and outputing it to signal chosen module；Signal chosen module will
The infrared signal received is amplified and is converted into on-off model, and signal chosen module exports on-off model to logic
Controller；Logic controller is according to the on-off model received, the break-make of control lamp road break-make device；Lamp road break-make device is for controlling
The break-make of the power supply of radio-frequency generator 9 processed.Specifically, in this example, on-off model is 0 or 1, when signal chosen module exports
When logical signal 1, indicate that working face has personnel's process, logic controller controls lamp road break-make device by radio-frequency generator 9 at this time
Dump；When signal chosen module output logic signal 0, indicate that working face passes through without personnel, logic controller control at this time
The roads Zhi Deng break-make device connects the power supply of radio-frequency generator 9.
Therefore, whether thermal infrared human inductor 7 can incude has personnel in radiation scope, if having sensed personnel
It is on the scene, so that device is automatically cut off the power, the personnel of grade resume work again after, to prevent damage of the ultraviolet light to personnel.
As shown in Fig. 2, the method for mine stope degradation hydrogen sulfide gas of the present invention, including following step
Suddenly：
S1 hangs on ultraviolet light emission device 13 between 12 frame top of hydraulic support and frame, all hydraulic branch on working face
Frame 12 by this arrangement, enables ultraviolet light radiation vulanization hydrogen to gush out and diffusion space；
S2, test job face wind speed v determine coalcutter downwind side degradation working range L according to working face wind speed v；L is under
Formula calculates：
L=vt
In formula：L is coalcutter downwind side degradation working range, unit m；
V is working face wind speed, unit m/s；
T is hydrogen sulfide gas by the time needed for ultraviolet degradation, unit s；
Wherein, hydrogen sulfide gas is gushed out concentration according to working face hydrogen sulfide gas by the time t needed for ultraviolet degradation and is taken
3~8s of value, preferably takes 5~6s；
S3 powers on, the booting work of ultraviolet light emission device 13 in regulation and control coalcutter downwind side degradation working range L
Make, give off the ultraviolet light of different wave length, on the other hand one side Direct Pyrolysis hydrogen sulfide gas is existed by wave-length coverage
The ozone oxidation hydrogen sulfide gas that 200nm ultraviolet photodegradation oxygen below is formed；It is equipped in each ultraviolet light emission device 13
Thermal infrared human inductor 7, when the personnel of sensing pass through, corresponding ultraviolet light emission device 13 is automatically cut off the power, and waits for personnel
Resume work after, ultraviolet light is avoided to damage personnel.
The mine stope degradation stink damp body device of the present invention is a kind of ultraviolet light emission device 13, through high frequency
After generator 9 is passed through power supply, high-frequency current is generated, the magnetic core 2 for being wound with magnetic coil 5 is sent to through feeder line, to generate a height
Frequency electromagnetic field excites the mercury atom in quartz lamp blister, when being excited mercury atom return ground state, launches ultraviolet light.By in work
Make face arrangement ultraviolet light emission device, so that ultraviolet light radiation vulanization hydrogen is gushed out and diffusion space, then according to working face wind
Speed determines coalcutter downwind side degradation working range, only opens the ultraviolet light emission device in working range, on the one hand ensures sulphur
To change hydrogen and acts on enough time under ultraviolet light, the ultraviolet light emission device on the other hand degraded outside working range is not turned on,
Avoid the wasting of resources.Meanwhile the working condition of ultraviolet light emission device 13 is adjusted by thermal infrared human inductor 7, avoid purple
Outside line damages personnel.The advantages that the device of the invention has stabilized intensity, and circuit is simple, long lifespan, and volume minimizes.
The present invention is easy to operate, efficient, at low cost, applied widely, and can Radiation work face it is global, eliminate dead angle, solve
The problem of traditional spray is limited in scope, cannot effectively neutralize the hydrogen sulfide gas of working face spatial dimension.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (10)
1. a kind of method of degradation mine stope hydrogen sulfide gas, which is characterized in that include the following steps：
Step 1, several ultraviolet light emission devices are placed in working face；
Step 2, ultraviolet light emission device is opened, ultraviolet light is given off, hydrogen sulfide gas of degrading.
2. the method for degradation mine stope hydrogen sulfide gas according to claim 1, which is characterized in that step 1
In, the ultraviolet light emission direction of two neighboring ultraviolet light emission device, one is longitudinal direction, another is laterally.
3. the method for degradation mine stope hydrogen sulfide gas according to claim 1, which is characterized in that step 1
In, a ultraviolet light emission device is placed on each hydraulic support, and a ultraviolet light is placed between each adjacent two hydraulic support
Emitter.
4. the method for degradation mine stope hydrogen sulfide gas according to claim 1, which is characterized in that step 2
Specially：
Gush out concentration according to working face hydrogen sulfide gas and determines that hydrogen sulfide gas by the time t needed for ultraviolet degradation, measures work
Make face wind speed v, coalcutter downwind side degradation working range L is calculated according to formula L=vt, opens coalcutter downwind side drop
The ultraviolet light emission device in working range L is solved, ultraviolet light is given off, hydrogen sulfide gas of degrading；
Wherein, hydrogen sulfide gas by the time t needed for ultraviolet degradation according to working face hydrogen sulfide gas gush out concentration values 3~
8s。
5. the method for degradation mine stope hydrogen sulfide gas according to claim 1, which is characterized in that further include
Step 3, whether there is personnel's process by the induction of the thermal infrared human inductor that coordinates with ultraviolet light emission device, when having sensed
When personnel pass through, corresponding ultraviolet light emission device is stopped, and resumes work again after personnel pass through.
6. it is a kind of degradation mine stope hydrogen sulfide gas device, which is characterized in that including pedestal (8), magnetic core (2),
Magnetic coil (5), bulb housing (1), lampshade (3), explosion-resistant enclosure (4), radio-frequency generator (9)；
Magnetic core (2) and radio-frequency generator (9) are set on pedestal (8), and magnetic core (2) and radio-frequency generator (9) electrical connection, high frequency occur
Cable (11) is connected on device (9), cable (11) is for connecting power supply；Magnetic coil (5) is wound on magnetic core (2), magnetic coil (5) is outside
It is provide with bulb housing (1), bulb housing (1) open end is tightly connected with pedestal (8), and bulb housing (1) and the sealing that pedestal (8) is formed are empty
In filled with ultraviolet light emission gas (6)；Pedestal (8), bulb housing (1) and radio-frequency generator (9) are respectively positioned on explosion-resistant enclosure (4)
Interior, one end of explosion-resistant enclosure (4) is open end and is tightly connected with lampshade (3), blind end and lampshade (3) phase of bulb housing (1)
To setting.
7. the device of degradation mine stope hydrogen sulfide gas according to claim 6, which is characterized in that pedestal
(8) thermal infrared human inductor (7) is additionally provided on, thermal infrared human inductor (7) includes inductor, signal chosen module, patrols
Collect controller and lamp road break-make device；Inductor is for receiving infrared signal and outputing it to signal chosen module；Signal is selected
The infrared signal received is amplified and is converted into on-off model by module, and signal chosen module exports on-off model
To logic controller；Logic controller is according to the on-off model received, the break-make of control lamp road break-make device；Lamp road break-make device
Break-make for the power supply for controlling radio-frequency generator (9).
8. the device of degradation mine stope hydrogen sulfide gas according to claim 6, which is characterized in that height takes place frequently
It is connected with cooling fin (10) on raw device (9), cooling fin (10) is stretched out from explosion-resistant enclosure (4).
9. the device of degradation mine stope hydrogen sulfide gas according to claim 6, which is characterized in that explosion-proof outer
Shell (4) is flared structure, and larger diameter end is open end and is tightly connected with lampshade (3).
10. the device of degradation mine stope hydrogen sulfide gas according to claim 6, which is characterized in that light bulb
Shell (1) is quartz lamp blister, and lampshade (3) is quartzy lampshade, and ultraviolet light emission gas (6) is mercury vapour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326702.7A CN108607345A (en) | 2018-04-12 | 2018-04-12 | A kind of device and method of degradation mine stope hydrogen sulfide gas |
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| CN201810326702.7A CN108607345A (en) | 2018-04-12 | 2018-04-12 | A kind of device and method of degradation mine stope hydrogen sulfide gas |
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Application publication date: 20181002 |