CN108325359B - A kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device - Google Patents
A kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device Download PDFInfo
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- CN108325359B CN108325359B CN201710409665.1A CN201710409665A CN108325359B CN 108325359 B CN108325359 B CN 108325359B CN 201710409665 A CN201710409665 A CN 201710409665A CN 108325359 B CN108325359 B CN 108325359B
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- temperature plasma
- cleaning
- plasma generator
- waste gas
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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
-
- 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
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- 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
-
- 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
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device, includes the following steps: that (1) closes discharging tray power supply, close exhaust gas import and export valve, guarantee the leakproofness in reaction of low temperature plasma area；(2) ultrasonic oscillator is laid in the low temperature plasma generation area of emission-control equipment；(3) cleaning solution is filled into low-temperature plasma generator, carry out ultrasonic cleaning, wherein the high-field electrode wiring of low-temperature plasma generator is laid in plasma generator one end, junction between low-temperature plasma generator high-field electrode and null electrode terminals and generator is secondary seal, and seal form is tandem double seals.The present invention solves the problems, such as low-temperature plasma generator electrode coking pollution, and coke cleaning speed is fast.
Description
Technical field
The present invention relates to a kind of methods of the online coke cleaning of low-temperature plasma waste gas treatment device.
Background technique
Low temperature plasma is widely used to industrial VOCs improvement and dedusting, the desulfurization of flue gas, with low energy consumption, adapts to
The advantages that property is strong, processing speed is fast.Since there are dust, aerosol, H in industrial waste gas2The components such as S and low temperature plasma
The macromolecule polyalcohol for reacting generation between waste gas component during discharge causes cold plasma discharge position to be easy to produce knot
Coke, when handling high-concentration organic waste gas, low temperature plasma coking phenomenon is even more serious.It is wrapped in the coking at electric discharge position not
The efficiency for only reducing Low Temperature Plasma Treating exhaust gas, increases energy consumption, reduces service life, while duplicate decoking work also adds
Operating burden is weighed.
The present invention targetedly solves electrode coking pollution problem in low temperature plasma generating device.
Summary of the invention
The present invention passes through ultrasonic cleaning technique in situ, can be realized the online coke cleaning of low temperature plasma generating device, solves
The problem of low-temperature plasma generator electrode coking is polluted.
To solve the above problems, the present invention provides a kind of method of online coke cleaning of low-temperature plasma waste gas treatment device,
Include the following steps:
(1) close discharge of plasma in low temperature disk power supply, close gas inlet valve and outlet valve, guarantee low temperature etc. from
The leakproofness of daughter reaction zone；
(2) ultrasonic oscillator is laid in the low temperature plasma generation area of emission-control equipment；
(3) cleaning solution is filled into low-temperature plasma generator, carries out ultrasonic cleaning,
Wherein, the high-field electrode wiring of low-temperature plasma generator is laid in plasma generator one end, low temperature etc.
Junction between plasma generator high-field electrode and null electrode terminals and generator is secondary seal, and seal form is string
Connection formula double seals.
Preferably, the distance of the installation site distance low-temperature plasma generator of the ultrasonic oscillator is 3-100cm.
Preferably, it is 0.1-10kw/m that the unit area of the ultrasonic oscillator, which applies power,2。
Preferably, in step (3), when filling cleaning solution into low-temperature plasma generator, plasma generator high pressure
End is located at the liquid level of cleaning solution or more, and null electrode is immersed in cleaning solution.
Preferably, cleaning solution described in step (3) is any one in water or alkalescent cleaning solution.
Beneficial effects of the present invention:
The present invention by laying ultrasonic oscillator in low-temperature plasma generator, meanwhile, make low temperature plasma
The high-field electrode wiring of device is laid in plasma generator one end, and low-temperature plasma generator high-field electrode and null electrode
Junction between terminals and generator is secondary seal, and seal form is tandem double seals, passes through above-mentioned technology
Means targetedly solve electrode coking pollution problem in low temperature plasma generating device.
Detailed description of the invention
Fig. 1 is the schematic device that the method for the invention uses.
Specific embodiment
The present invention will be further described below by way of examples, but protection scope of the present invention be not limited only to it is following
Embodiment.
Embodiment 1:
The foul waste gas that certain sewage in ethylene plant collecting pit generates, major impurity include benzene, toluene, styrene etc., and total hydrocarbon is dense
Spend 1500mg/m3.Low Temperature Plasma Treating exhaust gas duration 100 hours, Low-Temperature Plasma Discharge coking product is obvious.
Prepare before ultrasonic cleaning: as shown in Figure 1, closing discharge of plasma in low temperature disk power supply before ultrasonic cleaning, closing useless
Gas air intake valve and outlet valve, guarantee reaction of low temperature plasma area leakproofness, are filled to water level and there are not over-discharge electroplax reaction zone,
But it does not contact at high-voltage electricity extremely sealing.
The setting of supersonic cleaning machine operating condition: 30 DEG C of water temperature, it is cleaned by ultrasonic power 1500w.
Coke cleaning cleaning solution is prepared: coke cleaning cleaning solution stoste (alkaline cleaning fluid) and clear water volume ratio 1:20 carry out preparation cleaning
Liquid.
Ultrasonic cleaning operation: ultrasonic cleaning duration 5min sees that part coking product falls off, is cleaned by ultrasonic duration 15min,
Coking product falls off completely.
Embodiment 2:
The foul waste gas that certain chemical engineering sewage Treatment stations conditioning tank generates, major impurity include benzene, toluene, hexamethylene etc., always
Hydrocarbon concentration 500mg/m3.Low Temperature Plasma Treating exhaust gas duration 100 hours, Low-Temperature Plasma Discharge coking product is more real
It is few to apply example 1.
Night is cleaned according to preparation, the setting of supersonic cleaning machine operating condition and coke cleaning before completion ultrasonic cleaning described in embodiment 1
It prepares.Ultrasonic cleaning operation: ultrasonic cleaning duration 5min, coking product fall off completely.
Claims (5)
1. a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device, includes the following steps:
(1) discharge of plasma in low temperature disk power supply is closed, gas inlet valve and outlet valve are closed, guarantees low temperature plasma
The leakproofness of reaction zone；
(2) ultrasonic oscillator is laid in the low temperature plasma generation area of emission-control equipment；
(3) cleaning solution is filled into low-temperature plasma generator, carries out ultrasonic cleaning,
It is characterized in that, the high-field electrode wiring of low-temperature plasma generator is laid in plasma generator one end, low temperature
Junction between plasma generator high-field electrode and null electrode terminals and generator is secondary seal, and seal form is
Tandem double seals.
2. a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device according to claim 1, feature exist
In the distance of the installation site distance low-temperature plasma generator of the ultrasonic oscillator is 3-100cm.
3. a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device according to claim 1, feature exist
In it is 0.1-10kw/m that the unit area of the ultrasonic oscillator, which applies power,2。
4. a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device according to claim 1, feature exist
In in step (3), when filling cleaning solution into low-temperature plasma generator, plasma generator high-voltage end is located at cleaning solution
Liquid level more than, and null electrode is immersed in cleaning solution.
5. a kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device according to claim 1, feature exist
In cleaning solution described in step (3) is any one in water or alkalescent cleaning solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409665.1A CN108325359B (en) | 2017-06-02 | 2017-06-02 | A kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409665.1A CN108325359B (en) | 2017-06-02 | 2017-06-02 | A kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108325359A CN108325359A (en) | 2018-07-27 |
| CN108325359B true CN108325359B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710409665.1A Active CN108325359B (en) | 2017-06-02 | 2017-06-02 | A kind of method of the online coke cleaning of low-temperature plasma waste gas treatment device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111073678B (en) * | 2018-10-22 | 2022-01-07 | 中国石油化工股份有限公司 | Ultrasonic quenching device capable of removing coke on line and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331851Y (en) * | 1997-07-16 | 1999-08-04 | 魏浩鹏 | Low-frequency acoutic-wave boiler soot-blowing, coke-knocking combustion-support device |
| RU2339878C2 (en) * | 2006-07-17 | 2008-11-27 | Сергей Владимирович Алексеенко | Method of plasma-coal lighting up of boiler and associated plant |
| CN107042039A (en) * | 2017-06-12 | 2017-08-15 | 南京大学盐城环保技术与工程研究院 | The device and processing method of a kind of dielectric barrier discharge low-temperature plasma concerted catalysis processing organic exhaust gas |
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