CN205710010U - A kind of gas-liquid mixed low-temperature plasma generator and integrating device - Google Patents
A kind of gas-liquid mixed low-temperature plasma generator and integrating device Download PDFInfo
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Abstract
The open a kind of gas-liquid mixed low-temperature plasma generator of this utility model, negative electrode is bar-shaped, is installed in the cathode tube of sealing；Anode is annular, is installed in the anode tube of sealing, and anode tube is installed on ventilation support, and ventilation support is fixed in the middle part of cathode tube, and ventilation support is provided with through intake air way；Cathode tube upper end protrudes from anode, and lower end is connected with high-voltage pulse power source by wire；It is sun level inner tube and sun level outer tube inside and outside anode；The material of cathode tube, anode inner tube and anode outer tube is quartz.The gas that region of discharge between described negative electrode and anode is passed through is the gas adding atomized liquid.Gas-liquid mixed low-temperature plasma generator integrating device of the present utility model can carry out the most effectively degraded to the Organic substance being difficult to degrade in oil gas field produced water and operation wastewater, and industrial-scale production can be realized, and there is the features such as volume is little, lightweight, simple to operate, non-maintaining, operating cost is low.
Description
Technical field
The present invention relates to a kind of low-temperature plasma generator, especially for processing oil gas field produced water and operation wastewater
In be difficult to biodegradation organic gas-liquid mixed low-temperature plasma generator integrating device.
Background technology
Along with the exhaustion of water resource and the deterioration of ecological environment, development shape to exploitation of oil-gas field industry and petroleum chemical industry
Having become serious restriction, therefore the advanced treating of oil gas field produced water and operation wastewater seems the most urgent.
At present the processing method of refractory organic in waste water is mainly had:
Fenton oxidation technology: be by Fe2+And H2O2In conjunction with producing Hydroxyl radical HO, it and the reaction meeting of pollutant
Organic matter degradation is made to ultimately generate CO2And H2O.Its technological merit is the multiple poisonous and hazardous Organic substance of oxidable destruction, reaction bar
Part is gentle, equipment is simple, the scope of application is wider.Technical disadvantages is that medicament usage amount is big, response time length, some Organic substance the most not
Can be degraded.
Ozonation technology: ozone can react generation Hydroxyl radical HO with hydroxyl HO-in aqueous, passes through HO
Carry out oxidation reaction with Organic substance, although the oxidability of ozone is very strong, but the rotproofness of equipment is required higher.At present in dirt
The aspects such as dye waste water decoloring, sterilization, deodorization have wide application.
Photocatalysis oxidation technique: include that light excites oxidation technology (O3/ UV) and catalytic oxidation technologies (TiO2/UV).Oxidation skill
Art；Main with O3、H2O2、O2With air as oxidant, under the effect of light radiation, produce Hydroxyl radical HO, both
By HO, strong oxidizing property Organic substance is decomposed, oxidation effectiveness preferably ultraviolet catalytic oxidation technology.It is excellent
Point is that reaction is gentle, oxidability is strong, particularly at waste water such as waste water from dyestuff, surfactant, organic phosphorus compound, polycyclic aromatic hydrocarbons
Process can carry out light-catalyzed reaction effectively so that it is be converted into inorganic molecules, reach the purpose of harmless treatment.Shortcoming is
The absorption region of ultraviolet light is narrow, and light-use is low compared with efficiency, and its efficiency can be by catalyst property, ultraviolet wavelength and reactor
Restriction, short wave ultraviolet is more effective than long wave ultraviolet, but the more difficult acquisition of short wave ultraviolet.Photocatalysis transmittance to be solved
Problem, the turbidity of some sewage is relatively deeply all unfavorable for compared with high chroma light through and affect catalytic effect.
Electro-catalytic oxidation technology: electrochemical oxidation is the oxygen by the Hydroxyl radical HO produced that discharges on anode surface
Change effect, and absorption Organic substance generation oxidation reaction on anode, thus remove a technology of pollutant.Its advantage is dress
Install standby material simple, simple to operate, that low price, anode with oxidation stain thing, can change anode and just can remove difference
Organic substance, cathode can reclaim heavy metal.Its shortcoming is that solubility consumption of electrode is excessive, device efficiency is on the low side, operating cost
Too high.
Wet air oxidation and wet raw noodles；Be high temperature (120 DEG C～320 DEG C), high pressure (0.5～
10MPa) and under conditions of catalyst (oxide, noble metal) exists, with the O in air2For oxidant in the liquid phase by organic
Pollutant oxidation is CO2And H2The inorganic molecules such as O or the chemical process of organic molecule.
Supercritical Water Oxidation Technology: be also with water for liquid phase main body as Wet Oxidation Process, with the oxygen in air be
Oxidant reaction at high temperature under high pressure.This technology utilizes water under supercriticality (Tc ＞ 374 DEG C, Pc ＞ 22.05MPa)
Special nature, so that during gas, Organic substance are completely soluble, now gas liquid film disappears, and defines homogeneous oxidizing system.
Owing to eliminating alternate resistance present in wet oxidation system, improve response speed, and aoxidize in homogeneous system, freely
The activity of base is higher, and degree of oxidation improves the most therewith.Its advantage is that homogeneous reaction speed is fast, decomposing organic matter efficiency is high, without two
Secondary pollution.Shortcoming is that equipment needs that High Temperature High Pressure, one-time investment are big, operating cost is high, needs professional to manage and safeguard, pushing away
Wide application difficult, thus constrain the engineer applied of this technology.
Ultrasonic oxidation technology: be primarily referred to as the frequency sound wave at 15KHz～1MHz, in small region, instantaneous high-temperature is high
Pressure produces a technology of hydroxyl radical free radical.Another kind is ultrasound wave stripping, is mainly used in Coal Gas Washing Cycling Water difficult degradation
Organic process.When pressurizeing with appearance liquid with the ultrasound wave moment of certain frequency and pressure, solution under the effect of sound wave negative pressure
In create cavitation bubble, in the rapid disintegrate of sound wave direct draught cavitation bubble subsequently, whole process within the time of nanosecond to microsecond, gas
Bubble quickly collapse, along with the adiabatic compression of steam phase in bubble, produces the High Temperature High Pressure of moment, has strong impacts simultaneously
High-speed micro-jet.Enter cavitation bubble steam at high temperature under high pressure occur division and chain reaction, produce HO, HOO,
H, etc. free radical and H2O2、H2Deng material.The approach of phonochemical reaction mainly includes High Temperature High Pressure pyrolytic reaction and free radical
Oxidation reaction two kinds.Its advantage is that coordinative composition of equipments is easy, simple to operate, easy to use, toxic organic compound can be degraded to toxicity
The most nontoxic less little molecule, degradation speed are fast, do not result in secondary pollution.Shortcoming is that power consumption is big.
Oxidation technology in sum, it is advanced oxidation skill relatively advanced during the waste water of approval the most both at home and abroad processes
Art, the popularization and application having, have is only limitted to laboratory or pilot scale stage.
But said method is the most undesirable to the organic degraded of oil gas field produced water and operation wastewater, and main cause is
Oil gas field produced water and operation wastewater mostly are haline water, and common processing method is not suitable for the environment of high saliferous.There is degraded effect
Rate difficulty low, up to standard is big, can not carry out the problems such as industrial-scale production.
Summary of the invention
Not enough for prior art, the present invention provides the high efficient cryogenic etc. that a kind of active ion concentration is high, liquid phase is mixing
Gas ions sewage-treatment plant.
The technical solution adopted for the present invention to solve the technical problems includes:
A kind of gas-liquid mixed low-temperature plasma generator, including negative electrode and anode, high-voltage pulse power source, anode and
Negative electrode is connected with positive pole and the negative pole of high-voltage pulse power source respectively；
Negative electrode is bar-shaped, is installed in the cathode tube of sealing；
Anode is annular, is installed in the anode tube of sealing, and anode tube is installed on ventilation support, and ventilation support is fixed on
In the middle part of cathode tube, ventilation support is provided with through intake air way；
Cathode tube upper end protrudes from anode, and lower end is connected with high-voltage pulse power source by wire；
It is sun level inner tube and sun level outer tube inside and outside anode；
The material of cathode tube, anode inner tube and anode outer tube is quartz.
The gas that region of discharge between described negative electrode and anode is passed through is the gas adding atomized liquid.
The outer surface that described cathode tube upper end protrudes from anode is coated with nano-TiO2Anatase.
The nano-TiO of described cathode tube2Anatase coating thickness is 0.2～0.3mm.
The material of described anode and negative electrode is 60～80 mesh red copper granules.
A kind of gas-liquid mixed low-temperature plasma generator integrating device, including housing, described liquid phase is mixing low
Isothermal plasma generator；Being provided with inner core in its middle shell, inner core connects air inlet pipe, and air inlet pipe connects has liquid to be atomized
Device；Connect on housing and have water inlet pipe, outlet pipe and exhaustor；The electrode of low-temperature plasma generator is installed on inner core,
Inner core is connected with housing by the intake air way of the support of low-temperature plasma generator；Inlay the horizontal direction on inner core with vertical
It is provided with the electrode of at least two low-temperature plasma generator；The anode of low-temperature plasma generator and negative electrode respectively with
The positive pole of high-voltage pulse power source is connected with negative pole.
At least two inner core it is provided with in described housing.
Described integrating device is to be additionally provided with inner core in nested structure, i.e. inner core；The most successively constitute outer layer water channel,
Air flue and internal layer water channel；Air flue connects with air inlet；Outer layer water channel connects with water inlet with internal layer water channel；Inside and outside air flue two
On layer cylinder, the bi-medium to block formula electrode of low-temperature plasma generator is for dock two-by-two, i.e. negative electrode connects as one, and two
End negative electrode protrudes from two annular anodes.
The nested structure of described integrating device is to be provided with four layers of inner core in housing, constitutes outer layer water the most successively
Road, outer layer air flue, middle level water channel, internal layer air flue, internal layer water channel；Air flue connects with air inlet；Water channel connects with water inlet.
The present invention makes full use of atomization gas, forms biphase gas and liquid flow, carries out the pulse in gas under air water assembled state
Corona or streamer-discahrge, the plasma of generation directly contacts with water, thus provides preferable region of discharge and mass-transfer zone.Enter one
Step ground, produces ultraviolet light when making full use of high pressure pulse discharge, introduces supported catalyst TiO2Quartz ampoule as medium, at height
The ultraviolet light that pressure pulsed discharge produces causes TiO2Catalytic effect, promote that more hydroxyl radical free radical is formed, strengthen to waste water
Middle oxidation operation decomposes；Further, the present invention uses double-dielectric barrier discharge form, i.e. negative electrode to high pressure pulse discharge
All use with anode quartz ampoule as barrier discharge medium, due to the effect of pulse current during electrion, the discharge end of electrode
High temperature galvanic corrosion phenomenon can be produced, use quartz ampoule as barrier discharge medium, can effectively stop the galvanic corrosion phenomenon of electrode, can be big
Width improves the service life of electrode.
In the present invention, the electric conductor material of electrode is 60～80 mesh red copper granules, loads after pipe is inserted into high-voltage conducting wires close
Envelope, high-voltage conducting wires is caused high-voltage pulse power source by high-voltage connection sealing device.
The encapsulant material being installed between sun level inner tube and sun level outer tube is silica gel.
The material of ventilation support is silica gel, is installed on the other end between sun level inner tube and sun level outer tube, and cathode tube is inserted
Enter in the middle of ventilation support.
Cathode tube is docked on the same axis.
High pressure pulse discharge process can produce low temperature plasma, and it is except, in addition to producing high energy electron in its electric field, going back
Produce ultraviolet light, ozone and active ion (-OH ,-O ,-H, O3、H2O2) etc..This characteristic can be used to be difficult in degradation water biology
Degraded Organic substance and remove the harmful substances such as antibacterial.
TiO2By during high pressure pulse discharge produce ultraviolet light irradiate after, produce electron-hole pair, wherein electronics easily by
The oxidation material captures such as oxygen in water, the most oxidable absorption in hole is at TiO2The Organic substance on surface or first general's absorption are at TiO2
-the OH and H on surface2O is oxidized to hydroxyl radical free radical, hydroxyl radical free radical be then the oxidability in water be the strongest.
Gas-liquid mixed low-temperature plasma generator integrating device of the present invention is by multiple low-temperature plasma generators
Flexible is combined, form that can be integrated be annular n-layer × 2 × 8 or；Annular n-layer × 2 × 16 or；Annular n-layer × 2
The multi-forms such as × 32.And fixing by installing, annular n-layer × 2 × 32 are sleeved on outside annular n-layer × 2 × 16, by annular n
Layer × 2 × 8 are sleeved in annular n-layer × 2 × 16.Form the integrating device that a plasma generator is the most intensive.And
The abundant fusion of plasma and water by water stratification, can be increased by this suit annular.Therefore gas-liquid mixed low temperature etc.
Plasma generator integrating device has that degradation efficiency is high, lightweight, simple to operate, non-maintaining, operating cost is low, can be used for work
The features such as industry large-scale production.
The present invention solves the deficiency of the organic matter degradation technology in existing oil gas field produced water and operation wastewater, it is provided that one
Plant the method and device that the Organic substance being difficult to degrade in oil gas field produced water and operation wastewater can be carried out the most effectively degraded.
The present invention is had the beneficial effect that offer one can be raw to being difficult in oil gas field produced water and operation wastewater
The Organic substance of thing degraded is degraded fast and effectively, and can realize industrial-scale production, and have volume little, lightweight,
The feature such as simple to operate, non-maintaining, operating cost is low.
Accompanying drawing explanation
Fig. 1 is front view during negative electrode of the present invention docking；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the B-B sectional view of Fig. 2；
Fig. 4 is the front view of liquid phase of the present invention mixing low-temperature plasma generator integrating device；
Fig. 5 is the profile of Fig. 4；
Fig. 6 is the II-II sectional view of Fig. 5；
Fig. 7 is the air water layering schematic diagram of the present invention.
Detailed description of the invention
Enforcement to the present invention is further described below in conjunction with the accompanying drawings.
See Fig. 1 to Fig. 7:
One gas-liquid mixed low-temperature plasma generator of the present invention, including: negative electrode and anode, high-voltage pulse power source,
Anode and negative electrode are connected with positive pole and the negative pole of high-voltage pulse power source by high-voltage conducting wires 7 respectively；
Negative electrode is installed in the cathode tube 33 of sealing；
Circular anode is installed in the anode tube of sealing, and anode tube is installed on ventilation support 36, and ventilation support is fixed on
In the middle part of cathode tube 33, ventilation support 36 is provided with through intake air way；
Cathode tube 33 upper end protrudes from anode, and lower end is connected with high-voltage pulse power source by wire；
It is sun level inner tube 31 and sun level outer tube 32 inside and outside anode；It is sealing ring 37 on the upside of anode tube, on the downside of anode tube
It is integrated with ventilation support 36；
The material of cathode tube 33, anode inner tube 31 and anode outer 32 is quartz.
The material of ventilation support 36 is silica gel, and fixed anode inner tube and anode outer tube are also allowed to concentric.
See Fig. 4 to Fig. 7:
A kind of gas-liquid mixed low-temperature plasma generator integrating device of the present invention, including housing 20, four layers of inner core,
Constitute outer layer water channel 41, outer shroud air flue 42, middle level water channel 43, internal ring air flue 44, internal layer water channel 45 the most successively；Gas-liquid is mixed
The anode of box-like low-temperature plasma generator is fixed on a cylinder ancient piece of jade, round, flat and with a hole in its centre for inner core；Outer shroud air flue 42 and the cathode tube of internal ring air flue 44
Docked on the same axis by negative electrode butt tube 34 two-by-two in gas passage.Negative electrode butt tube 34 material is silica gel.
Water inlet 1, water inlet 5 it is provided with on housing 20；Water inlet 1 is connected with sub-cylinder 8；Water inlet 5 and outer layer water channel
41, middle level water channel 43, internal layer water channel 45 connect.
The barrel material of internal ring air flue 44 and outer shroud air flue 42 is that high density engineering plastics are by wire connection valve, flexible trachea
Being connected with sub-cylinder 8, sub-cylinder 8 is connected with air inlet, and through air flue, compression atomizing gas is sent into the logical of plasma generator
Wind support 36 end, atomization gas is again in the pulsed discharge region entrance liquid of plasma generator 15, when atomization gas
When pressure is more than container discharge pressure, then liquid can not enter air flue by the pulsed discharge region of plasma generator 15
In.
On circumferential direction, outer shroud air flue 42 is evenly distributed 16 pairs of electrodes, and internal ring air flue 44 is evenly distributed 8 pairs of electrodes.?
On vertical direction, the number of plies that outer shroud air flue 42 electrode is installed is 10 layers, and the number of plies that internal ring air flue 44 electrode is installed is 9 layers.Specifically
Installation quantity can be adjusted according to concentration and the organic kind of COD in sewage load, sewage.
Inner core is fixed in housing by fixed plate.Fixed plate is connected with housing and inner core by bolt respectively.
Air inlet pipe is connected with outer shroud air flue 42, internal ring air flue 44 by sub-cylinder 8.
Outer shroud air flue 42 has outer shroud air drain 27 to surround, internal ring air flue 44 has class ring air drain 13 to surround.
Housing 20 is provided with exhaust apparatus 6, and exhaust apparatus 6 connects with outer layer water channel, middle level water channel 43, internal layer water channel 45, row
Device of air 6 is provided with hand-operated valve and automatic exhaust steam valve.
Housing lower end is provided with straight-through fast slotting 25.Outer shroud air flue, internal ring air flue are fast slotting with straight-through by delivery pipe 26 respectively
25 connect, and check whether integrating device internal gas pressure balances with the hydraulic pressure in carrier container by the straight-through fast hand-operated valve inserting 25:
Opening hand-operated valve when hydraulic pressure is more than air pressure has liquid to flow out, and opens hand-operated valve then no liquid when air pressure is more than hydraulic pressure and flows out.
It is provided with water inlet on housing 20, is used for connecting water supply network.
Water in carrier container is connected back to the network of rivers by outlet and reclaims by outlet 22.
When sewage disposal:
Being accessed water supply network by carrier container water inlet, carrier container outlet accesses backwater net, carrier container air inlet
Access gas transmission pipeline net work.
First being opened by equipment steam supply valve, air pressure is adjusted to 0.1～about 0.11MPa, and opens the valve on exhaust apparatus.
After being opened by water supply network valve, flow is adjusted to 0.8～1 meter per second (intake pressure 0.09～0.1Mpa).
Open the straight-through fast hand-operated valve of slotting 25 a little, see if there is water and flow out, be gradually increased supply gas pressure if there are flowing out
Until the straight-through fast hand-operated valve inserting 25 not there are flowing out, the straight-through fast hand-operated valve inserting 25 is cutting out.
Open high-voltage pulse power source, after high-voltage pulse power source output voltage is adjusted to 0V, then open Pulse forming line switch, by
Voltage pulse output is adjusted to 21.5～22KV by step, and pulsewidth output is adjusted to 10～15 μ s, and the COD observing in-line meter refers to
Mark, reduces flow until COD ＜ 150mg/L as COD ＞ 150mg/L.
In sum, equipment processes ability and the COD concentration of sewage, organic kind and the plasma generation of sewage
The quantity of device is relevant, therefore to confirm before sewage disposal that the parameters such as organic kind, the concentration of COD, sewage load are come
Determine the quantity of plasma generator and the power of the pulse power.
Claims (9)
1. a gas-liquid mixed low-temperature plasma generator, it is characterised in that including: negative electrode and anode, high-voltage pulse electric
Source, anode and negative electrode are connected with positive pole and the negative pole of high-voltage pulse power source respectively；
Negative electrode is bar-shaped, is installed in the cathode tube of sealing；
Anode is annular, is installed in the anode tube of sealing, and anode tube is installed on ventilation support, and ventilation support is fixed on negative electrode
In the middle part of pipe, ventilation support is provided with through intake air way；
Cathode tube upper end protrudes from anode, and lower end is connected with high-voltage pulse power source by wire；
It is sun level inner tube and sun level outer tube inside and outside anode；
The material of cathode tube, anode inner tube and anode outer tube is quartz.
A kind of gas-liquid mixed low-temperature plasma generator the most according to claim 1, it is characterised in that described negative electrode
With the gas that the region of discharge between anode is passed through is the gas adding atomized liquid.
A kind of gas-liquid mixed low-temperature plasma generator the most according to claim 1 and 2, distal process in described cathode tube
Outer surface for anode is coated with nano-TiO2Anatase.
A kind of gas-liquid mixed low-temperature plasma generator the most according to claim 3, the nano-TiO of described cathode tube2
Anatase coating thickness is 0.2～0.3mm.
A kind of gas-liquid mixed low-temperature plasma generator the most according to claim 1 and 2, described anode and negative electrode
Material is 60～80 mesh red copper granules.
6. a gas-liquid mixed low-temperature plasma generator integrating device, it is characterised in that include housing, claim 1,
One of the 2 and 4 described mixing low-temperature plasma generators of liquid phase；
Being provided with inner core in its middle shell, inner core connects air inlet pipe, and air inlet pipe connects device for atomizing liquid；
Connect on housing and have water inlet pipe, outlet pipe and exhaustor；
The electrode of low-temperature plasma generator is installed on inner core, and inner core is entered by the support of low-temperature plasma generator
Air channel connects with housing；
Inlay the horizontal direction on inner core and be vertically provided with the electrode of at least two low-temperature plasma generator；
The anode of low-temperature plasma generator is connected with positive pole and the negative pole of high-voltage pulse power source respectively with negative electrode.
A kind of gas-liquid mixed low-temperature plasma generator integrating device the most according to claim 6, it is characterised in that
At least two inner core it is provided with in described housing.
A kind of gas-liquid mixed low-temperature plasma generator integrating device the most according to claim 6, it is characterised in that
Described integrating device is to be additionally provided with inner core in nested structure, i.e. inner core；The most successively constitute outer layer water channel, air flue and
Internal layer water channel；Air flue connects with air inlet；Outer layer water channel connects with water inlet with internal layer water channel；
On the inside and outside two-layer cylinder of air flue, the bi-medium to block formula electrode of low-temperature plasma generator is for dock two-by-two, i.e.
Negative electrode connects as one, and two ends negative electrode protrudes from two annular anodes.
A kind of gas-liquid mixed low-temperature plasma generator integrating device the most according to claim 6, it is characterised in that
The nested structure of described integrating device is to be provided with four layers of inner core in housing, constitutes outer layer water channel, outer layer gas the most successively
Road, middle level water channel, internal layer air flue, internal layer water channel；Air flue connects with air inlet；Water channel connects with water inlet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883979A (en) * | 2016-06-03 | 2016-08-24 | 成都科衡环保技术有限公司 | Gas-liquid mixed type low-temperature plasma generator and integrated device |
| CN112964826A (en) * | 2021-03-17 | 2021-06-15 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Trapping device and method for measuring chloride ions in oil through high-temperature combustion hydrolysis-potentiometric titration |
-
2016
- 2016-06-03 CN CN201620542722.4U patent/CN205710010U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883979A (en) * | 2016-06-03 | 2016-08-24 | 成都科衡环保技术有限公司 | Gas-liquid mixed type low-temperature plasma generator and integrated device |
| CN105883979B (en) * | 2016-06-03 | 2018-08-10 | 成都科衡环保技术有限公司 | A kind of gas-liquid mixed low-temperature plasma generator and integrating device |
| CN112964826A (en) * | 2021-03-17 | 2021-06-15 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Trapping device and method for measuring chloride ions in oil through high-temperature combustion hydrolysis-potentiometric titration |
| CN112964826B (en) * | 2021-03-17 | 2023-10-17 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Device and method for capturing chloride ions in high-temperature combustion hydrolysis-potentiometric titration measurement oil |
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