CN103451334A - Device and method for preventing blockage of spray gun coke oven gas pipe of blast furnace - Google Patents
Device and method for preventing blockage of spray gun coke oven gas pipe of blast furnace Download PDFInfo
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- CN103451334A CN103451334A CN2013104052316A CN201310405231A CN103451334A CN 103451334 A CN103451334 A CN 103451334A CN 2013104052316 A CN2013104052316 A CN 2013104052316A CN 201310405231 A CN201310405231 A CN 201310405231A CN 103451334 A CN103451334 A CN 103451334A
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Abstract
The invention provides a device and method for preventing blockage of a spray gun coke oven gas pipe of a blast furnace. An ultrasonic generator is connected with three ultrasonic probes loaded with ultrasonic transducers through a signal transmission line, and the ultrasonic probes extend into a gas pipe from the bottom of the spray gun coke oven gas pipe respectively. The ultrasonic probes are inserted into the spray gun coke oven gas pipe; the ultrasonic generator sends out a high-frequency signal, and the high-frequency signal is converted into ultrasonic waves through the ultrasonic transducers; the probes are in contact with the attachment liquid on the inner wall of a spray gun pipeline to perform ultrasonic irradiation so as to generate an ultrasonic cavitation effect and an ultrasonic calorifics effect; the ultrasonic generator is started once at an interval of certain time and runs for 10-15 minutes after each start. By adopting the device and method provided by the invention, organic matters in the pipe wall attachments can be degraded to volatilize some organic matters, thus the deposition of toxic and harmful organic substances in the pipeline is reduced, the blockage of the spray gun coke oven gas pipe is effectively prevented, and the discharge of industrial pollutants is reduced.
Description
Technical field
The invention belongs to technical field of blast furnace ironmaking, relate in particular to a kind of for preventing blast furnace spray gun coke-oven gas blockage devices and methods therefor.
Background technology
Blast furnace blowing coke oven gas technique is that the process of the coke-oven gas from coke-oven plant is forced into higher than air port pressure, and under the effect of pressure, coke-oven gas arrives each air port through piping system, through spray gun, enters blast furnace.In blast furnace, coke-oven gas, by burning and decomposition reaction, for blast furnace provides heat and reductive agent, thereby substitutes thermal source and the reductive agent that corresponding coke is play a part, and completes and smelts and reduction reaction.This technique, when bringing good result, has also run into many beyond thought difficulties, and wherein main problem is line clogging, especially the problem of spray gun coke-oven gas blockage.Through conscientious investigation and analysis, think that the major cause that causes line clogging is separating out of the organic substances such as Naphthalene in Coke Oven Gas, benzene, phenol, tar, moisture in they and coke-oven gas interacts, and forms viscous mass and is attached to the tube wall surrounding, causes the air feed obstacle.Even treated coke-oven gas still can be brought above being mingled with into, therefore, will cause the phenomenon of line clogging to occur.
Frequency is called ultrasonic wave higher than the mechanical wave of 20kHz, and it belongs to sound wave.Ultrasonic technique is the rapidest, the most widely used field of development in acoustics.Not only at aspects such as industrial detection, processing, show powerful effect, it is the important member in modern science and technology that the ultrasonic appearance in technology such as imaging, ultrasonic holography, ultrasonic microscopes demonstrates ultrasonic technique more.
Ultrasonic wave is mainly reflected in mechanical effect, biological action, calorifics effect, cavatition and chemical action etc. to the effect of medium.The calorifics effect: ultrasonic wave can produce strong HF oscillation during by Absorption of Medium, between medium mutually friction can produce heat, thereby the temperature of liquid, solid will raise, when ultrasonic wave penetrates two kinds of different dielectric interfaces, temperature rise is larger.Cavatition: the microbubble be present in liquid vibrates under the effect of sound field, when acoustic pressure reaches certain value, bubble expands rapidly, then closed suddenly, produce shockwave when bubble is closed, a series of dynamic processes such as this expansion, closure, vibration are called cavitation.The Main Function principle of sonochemistry is that under ultrasonication, the ultrasonic cavitation of liquid is that bubble in liquid collapses under ultrasonication within the extremely short time, in the moment of cavitation bubble collapse, can produce 1900～5200K high temperature and surpass 5.065 * 10 in little space scope around it
7the high pressure of Pa, rate of temperature change is up to 10
9ks
-1, and with strong shockwave and speed per hour up to 400kmh
-1jet, these extreme environments are enough to the dielectric heating of gas in bubble and liquid interface is decomposed into to the material of strong oxidizing property as O, OH, O
2h etc., thus organic " water burning " reaction promoted.
Publication number CN101633035A has announced a kind of metallic crystal device and method of cooling thereof that adopts ultrasonic wave cavitation reinforcement, it sends high-frequency signal by ultrasonic signal generator, make transverter produce ultrasonic vibration, water coolant in crystallizer is produced to the ultrasonic cavitation effect, make water coolant become the superturbulent flow state, strengthen cooling.Simultaneously, the high-frequency signal sent by ultrasonic signal generator, make crystallizer produce ultrasonic vibration, to crystallizer carried out ultrasonic vibration by crystal metal, crystal grain thinning, improve the crystal metal mechanical property.
Zhao Deming etc. " multiple-frequency supersonic ripple oxidative degradation phenolic waste water " paper pilot scale is desired to make money or profit and with multiple-frequency supersonic ripple oxidation technology, phenol in water is processed, when the ultrasonic wave of sufficient intensity is passed through liquid, form cavitation bubble, collapsing the extremely of short duration strong pressure pulses of moment generation of going out, around bubble, short space forms hot localised points, created an extreme physical environment for organic degraded, organism has been caused to pyrolysis.In addition, main oxygenant H in the degradation of organic substances process
2o
2and OH, can oxidation comprise that biology is difficult to the various organism that transform and makes it mineralising, to Substrate non-selectivity almost, ultrasonic oxidation is played a decisive role, with organic speed of response than very fast.
All learning ultrasonic wave methanol aqueous solution hydrogen manufacturing described in quick grade " methanol aqueous solution ultrasonic wave hydrogen manufacturing experimental study " paper is occur with pyrolysis and be restructured as main hydrogen production reaction in the ultrasonic hole microenvironment of utilizing the ultrasonic cavitation effect to create, and the shared proportion of pyrolytic reaction and reforming reaction also can change along with the variation of ambient conditions, each cavitation bubble can be regarded a miniature thermal reactor as, and hydrogen is macroscopical result that some reactors produce hydrogen.
According to above background material, the present invention proposes a kind of method and device thereof that prevents the blast furnace blowing coke oven gas line clogging, the method easy and simple to handle to temperature, pressure etc. without particular requirement, and use clean electric energy not produce other pollution; Thereby this method can reduce by the organism in ultrasonic cavitation effect degraded tube wall dirt settling the deposition of the organic substances such as the interior poisonous and harmful of pipeline; Can make the partial organic substances volatilization by ultrasonic calorifics effect simultaneously, improve tube wall dirt settling mobility, prevent to a certain extent the line clogging problem caused by impurity such as Naphthalene in Coke Oven Gas, benzene, phenol, tar.
Summary of the invention
The present invention aims to provide a kind of simple to operate, pollution-free, can reduce the deposition of the organic substances such as the interior poisonous and harmful of pipeline, makes the partial organic substances volatilization, improves the mobility of tube wall dirt settling, thereby effectively prevents blast furnace spray gun coke-oven gas blockage device and method.
For this reason, the solution that the present invention takes is:
A kind of blast furnace spray gun coke-oven gas blockage device that prevents, comprise ultrasonic generator, signal transmission line, ultrasonic transducer, ultrasonic probe and sealing-ring, ultrasonic generator is connected by signal transmission line with the ultrasonic probe that is loaded with ultrasonic transducer, ultrasonic probe stretches in gas pipe from spray gun coke-oven coal tracheae bottom respectively, and respectively the place of stretching into is provided with respectively sealing-ring.
The diameter of described ultrasonic probe is 5-15mm.
Described ultrasonic probe is 3, is located at respectively on the position apart from coke oven gas pipe inlet end 100mm, 300mm, 500mm.
A kind of method that prevents blast furnace spray gun coke-oven gas blockage device, it is characterized in that, ultrasonic probe on ultrasonic transducer is inserted to 5～20mm in spray gun coke-oven coal tracheae, it is 30～60kHz high-frequency signal that ultrasonic generator sends frequency, by ultrasonic transducer, high-frequency signal being changed into to frequency is 30～60kHz ultrasonic wave, produce ultra-sonic oscillation by ultrasonic probe in spray gun coke-oven coal tracheae, probe adheres to liquid phase with the spray gun inner-walls of duct and contacts and carry out ultrasound wave irradiation, it is produced to ultrasonic cavitation effect and ultrasonic calorifics effect, ultrasonic generator was opened once every 25～35 minutes, each run 10～15 minutes.
Described ultrasonic generator output ultrasonic electric power is 50～500W.
Beneficial effect of the present invention is:
1, the present invention is easy and simple to handle, to environment such as temperature, pressure, without particular requirement, and uses clean electric energy not cause other pollution.
2, the present invention is by the ultrasonic cavitation effect, organism in degradable tube wall dirt settling, simultaneously by ultrasonic calorifics effect, can make the partial organic substances volatilization, reduce the deposition of the organic substances such as the interior poisonous and harmful of pipeline, effectively prevent blast furnace spray gun coke-oven gas blockage, and reduce the discharge of industrial pollutants.
3, device of the present invention is simple, and energy consumption is low, good economy performance, and every day, current consumption was no more than 4.5kwh.
The accompanying drawing explanation
Fig. 1 prevents blast furnace spray gun coke-oven gas blockage device schematic diagram;
In figure: ultrasonic generator 1, output line 2, ultrasonic transducer 3, ultrasonic probe 4, sealing-ring 5, coke-oven coal tracheae 6.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As seen from Figure 1, the present invention prevents that blast furnace spray gun coke-oven gas blockage device from being comprised of ultrasonic generator 1, signal transmission line 2, ultrasonic transducer 3, ultrasonic probe 4 and sealing-ring 5.Be provided with altogether the ultrasonic probe 4 that 3 diameters are 5-15mm, all be loaded with 3,3 ultrasonic probes 4 of a ultrasonic transducer on each ultrasonic probe 4 and be located at respectively on the position apart from coke oven gas pipe 6 inlet end 100mm, 300mm and 500mm.Ultrasonic generator 1 is connected by signal transmission line 2 with the ultrasonic probe 4 that is loaded with ultrasonic transducer 3,3 ultrasonic probes 4 stretch in coke-oven coal tracheae 6 from the bottom of spray gun coke-oven coal tracheae 6 respectively, respectively the place of stretching into is provided with respectively sealing-ring 5 and carries out encapsulation process, with gas leakage preventing.
The concrete technical parameter index of embodiment ultrasonic wave is in Table 1.
Table 1 embodiment ultrasonic technology parameter index
Embodiment 1:
The ultrasonic probe of diameter 8mm 4 is inserted to spray gun coke-oven coal tracheae 6 interior 10mm places, send the 30kHz high-frequency signal by ultrasonic generator 1, output ultrasonic electric power 50W, be adjusted to resonance state by ultrasonic transducer 3, ultrasonic generator 1 is opened once every 30min, each run 15min.
Embodiment 2:
The ultrasonic probe of diameter 10mm 4 is inserted to spray gun coke-oven coal tracheae 6 interior 6mm places, send the 40kHz high-frequency signal by ultrasonic generator 1, output ultrasonic electric power 150W, be adjusted to resonance state by ultrasonic transducer 3, ultrasonic generator 1 is opened once every 25min, each run 10min.
Embodiment 3:
The ultrasonic probe of diameter 8mm 4 is inserted to spray gun coke-oven coal tracheae 6 interior 15mm places, by ultrasonic generator 1, send the 40kHz high-frequency signal, output ultrasonic electric power 150W, be adjusted to resonance by ultrasonic transducer 3
State, ultrasonic generator 1 is opened once every 28min, each run 15min.
Embodiment 4:
The ultrasonic probe of diameter 15mm 4 is inserted to spray gun coke-oven coal tracheae 6 interior 20mm places, send the 50kHz high-frequency signal by ultrasonic generator 1, output ultrasonic electric power 500W, be adjusted to resonance state by ultrasonic transducer 3, ultrasonic generator 1 is opened once every 25min, each run 10min.
Utilize high performance liquid chromatography to be respectively naphthalene, benzene, phenol concentration detected result in the interior liquid tamper of blast furnace blowing coke oven gas pipe 6 sample: 276.8 mgL
-1, 146.5 mgL
-1, 484.5 mgL
-1; Each sample naphthalene, benzene and phenol concentration after processing in embodiment are as shown in table 2.
Each sample naphthalene, benzene and phenol concentration after processing in table 2 embodiment
Utilize this method to process liquid tamper in the blast furnace blowing coke oven gas pipeline, the clearance of naphthalene, benzene and phenol reaches respectively 74.98%, 59.59%, 79.89%, the liquid sample mobility improves, thereby can play the line clogging problem that prevention is caused by impurity such as Naphthalene in Coke Oven Gas, benzene, phenol, tar.
Claims (5)
1. one kind prevents blast furnace spray gun coke-oven gas blockage device, it is characterized in that, comprise ultrasonic generator, signal transmission line, ultrasonic transducer, ultrasonic probe and sealing-ring, ultrasonic generator is connected by signal transmission line with the ultrasonic probe that is loaded with ultrasonic transducer, ultrasonic probe stretches in gas pipe from spray gun coke-oven coal tracheae bottom respectively, and respectively the place of stretching into is provided with respectively sealing-ring.
2. the blast furnace spray gun coke-oven gas blockage device that prevents according to claim 1, is characterized in that, the diameter of described ultrasonic probe is 5-15mm.
3. the blast furnace spray gun coke-oven gas blockage device that prevents according to claim 1, is characterized in that, described ultrasonic probe is 3, is located at respectively on the position apart from coke oven gas pipe inlet end 100mm, 300mm, 500mm.
4. a method that prevents blast furnace spray gun coke-oven gas blockage device as claimed in claim, it is characterized in that, ultrasonic probe on ultrasonic transducer is inserted to 5～20mm in spray gun coke-oven coal tracheae, it is 30～60kHz high-frequency signal that ultrasonic generator sends frequency, by ultrasonic transducer, high-frequency signal being changed into to frequency is 30～60kHz ultrasonic wave, produce ultra-sonic oscillation by ultrasonic probe in spray gun coke-oven coal tracheae, probe adheres to liquid phase with the spray gun inner-walls of duct and contacts and carry out ultrasound wave irradiation, it is produced to ultrasonic cavitation effect and ultrasonic calorifics effect, ultrasonic generator was opened once every 25～35 minutes, each run 10～15 minutes.
5. the method that prevents blast furnace spray gun coke-oven gas blockage according to claim 4, is characterized in that, described ultrasonic generator output ultrasonic electric power is 50～500W.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104052316A CN103451334A (en) | 2013-09-06 | 2013-09-06 | Device and method for preventing blockage of spray gun coke oven gas pipe of blast furnace |
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| CN2013104052316A CN103451334A (en) | 2013-09-06 | 2013-09-06 | Device and method for preventing blockage of spray gun coke oven gas pipe of blast furnace |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201217005Y (en) * | 2008-05-15 | 2009-04-08 | 宝山钢铁股份有限公司 | Coal tube dredging apparatus |
| CN202845373U (en) * | 2012-07-25 | 2013-04-03 | 浙江省三门县振华机械有限公司 | Ultrasonic scale elimination and inhibition channel |
-
2013
- 2013-09-06 CN CN2013104052316A patent/CN103451334A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201217005Y (en) * | 2008-05-15 | 2009-04-08 | 宝山钢铁股份有限公司 | Coal tube dredging apparatus |
| CN202845373U (en) * | 2012-07-25 | 2013-04-03 | 浙江省三门县振华机械有限公司 | Ultrasonic scale elimination and inhibition channel |
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Application publication date: 20131218 |