CN103185340A - Anti-tar-blocking nozzle system and nozzle tar treatment method adopting same - Google Patents
Anti-tar-blocking nozzle system and nozzle tar treatment method adopting same Download PDFInfo
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- CN103185340A CN103185340A CN2011104524144A CN201110452414A CN103185340A CN 103185340 A CN103185340 A CN 103185340A CN 2011104524144 A CN2011104524144 A CN 2011104524144A CN 201110452414 A CN201110452414 A CN 201110452414A CN 103185340 A CN103185340 A CN 103185340A
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Abstract
The invention discloses an anti-tar-blocking nozzle system and a nozzle tar treatment method. The nozzle system comprises a fuel inlet pipe, an air inlet pipe and a nozzle bleed pipe, wherein the nozzle bleed pipe is simultaneously communicated with the fuel inlet pipe and the air inlet pipe, and the fuel inlet pipe and/or the air inlet pipe are/is provided with flow monitoring devices. The method comprises the following steps of: enabling each nozzle to correspond to one flow monitoring device, and performing real-time monitoring on flow changes in the fuel inlet pipe and/or the air inlet pipe through the flow monitoring devices; sending a tar blocking nozzle alarm when the flow monitoring device monitors that a certain nozzle is blocked by tar, and sending a nozzle tar clearing instruction; and meanwhile, stopping blocking detection on other nozzles, and performing nozzle blocking detection again after the tar is cleared. The anti-tar blocking nozzle system disclosed by the invention has the advantages that the degree of automation is high, and the tar blocking condition can be monitored in real time, so that the tar in the nozzles can be removed in the first time, and further, the ignition quality of the nozzles is improved, the operating rate of an ignition furnace is improved, and the like.
Description
Technical field
The present invention is mainly concerned with the sintering process apparatus field, refers in particular to a kind of burner tar processing method of burner system and employing said system thereof of anti-blocking tar.
Background technology
In modern sintering process process, ignition furnace is used to provide hot strip flame to mix surface, make solid fuel wherein fire burns, and make top layer compound sintering under ignition furnace high-temperature flue gas and solid fuel ignition exothermic effects, the heat that provides sufficient oxygen amount that the top layer is put aside by the air exhauster exhausting is passed to down one deck compound simultaneously, thereby impels down the solid fuel of one deck to burn away to make sintering process to carry out rapidly downwards and then finish sintering process.
Burner is being commonly called as of the burner used on the ignition furnace, can be regarded as the abbreviation of " nozzle that makes a fire ", is one of the most key parts of ignition furnace.Be commonly referred to as the burner body part, fuel inlet, air intake and squit hole are arranged, play the effect that distributes fuel and combustion air and spray after-combustion in a certain way.
Sintering ignition furnace can be divided into double-bevel, single bevel, three inclineds, preposition middle part burner formula, coke-stove gas, blast furnace gas and heavy oil ignition furnace etc. by the differences such as quantity, angle of inclination and internal-combustion medium of its burner at present.
As Fig. 1～shown in Figure 4, a kind of traditional burner system architecture of three row's formulas comprises that branch three rows are arranged in the burner on the ignition furnace furnace roof 8, every group of burner includes fuel inlet pipe 5, air intake pipe 6 and burner bleed pipe 7, fuel inlet pipe 5 links to each other and fuel valve 3 before connecting line is provided with burner with fuel channel 1, air intake pipe 6 link to each other with air duct 2 and before connecting line is provided with burner air door 4, the air-flow of introducing from fuel inlet pipe 5, air intake pipe 6 converges by 7 ejections of burner bleed pipe.
In use often there is the situation of the stifled burner of tar in the ignition furnace of said structure, and the burner that can cause being blocked when serious can't jet out flames, and flame flashes back to fuel channel 1, will cause serious negative effect to the quality of production and safety coefficient.The stifled burner reason of conventional tar and respective handling mode are as follows:
1. gas quality is poor, contained tar is many: general large-scale steel plant all are provided with filter in the outlet of coal gas pressurizing point, the coal gas that comes out from pressurizing point can be filtered, but indivedual medium-sized and small enterprises are in order to save cost, often cancel filter, this just causes the gas quality of delivering to ignition furnace not high, and the ratio of inner impurities, water and tar is higher, thereby causes burner to be blocked by tar.
2. ignition furnace does not have the tar detection system, can't in time clear up burner: the stifled burner of tar is not that short-term forms, but through long time integration, tar is cumulative in burner, the final consequence that forms.Owing to do not find the method that can effectively detect tar quantity in the burner, so in conventional point stove burner system, the tar checkout gear is not set, this causes in the ignition furnace production process, the operator must pay close attention to the burner flame combustion state, and is when finding that burner combustion is unusual, unable such as the flame ejection, the burner outer wall reddens etc., then must carry out the tar cleaning operation to this burner at once.If the operator can't in time find to pile up in the burner situation of tar, burner can't jet out flames or flame stop production to overhaul again when flashing back to the fuel channel by the time, comes too late.
3. do not have the automatic remover of tar: conventional point stove burner system does not arrange the automatic remover of tar, when the operative employee clears up in the burner tar, need close the coal gas that links to each other with this burner earlier, valve on the air duct, and then the big nut of burner afterbody turned on, often be with a long drill rod disclose from burner top into, with this original method tar is disclosed in burner, not only the burner internal structure is diminished, and by tar stopped up in the burner this moment, coal gas can't enter burner hearth, the workman falls in that remaining coal gas is smoked in probably by burner when operation, and safety coefficient is extremely low.
Summary of the invention
The technical problem to be solved in the present invention just is: the technical problem at prior art exists the invention provides a kind of automaticity height, can monitor the tar stopping state in real time, makes tar in the burner to be got rid of and then to improve the burner ignition quality very first time, improves the burner system of anti-blocking tar of ignition furnace operating rate and the burner tar processing method of employing said system thereof.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of burner system of anti-blocking tar comprises fuel inlet pipe, air intake pipe and the burner bleed pipe that is connected with fuel inlet pipe and air intake pipe simultaneously, and described fuel inlet pipe and/or air intake pipe are provided with the flow monitoring device.
As a further improvement on the present invention:
The detecting unit that described flow monitoring device comprises processing unit and is used for monitoring real-time traffic, described processing unit judges whether to stop up according to the Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with x burner and the ratio of all burner total flow sums.
Described flow monitoring device and one is used for controlling the interrupt switch that flow monitoring opens and closes and links to each other.
Described detecting unit is flow-through orifice or V-type awl.
The host computer that described processing unit and has warning function links to each other.
The present invention also comprises an automatic cleaning apparatus, and described automatic cleaning apparatus comprises medium flushing pipe and the cleansing medium source that is communicated with the burner bleed pipe.
Described scouring media source is can not fuel gas source.
Described medium flushing pipe is provided with control valve.
The end of described medium flushing pipe direction opposite with ejiction opening from the burner bleed pipe inserts.
Be equiped with non-return valve or solenoid electric valve on described fuel inlet pipe and the air intake pipe.
The present invention further provides a kind of burner tar processing method that adopts above-mentioned burner system, that is: corresponding flow monitoring device of each burner is monitored changes in flow rate in fuel inlet pipe and/or the air intake pipe in real time by the flow monitoring device; When the flow monitoring device monitoring to certain burner stifled tar takes place, send tar and stop up burner and report to the police, and send and instruct during carrying out the cleaning burner; Simultaneously, stop the obstruction of all the other burners is detected, after by the time cleaning is finished, carry out burner more again and stop up detection.
Further improvement as said method:
At one time, only a burner is carried out the tar clear instruction.
At the ignition furnace furnace roof interrupt switch is set, when operating personnel remove ignition furnace furnace roof control valve, the adjustment valve switch that must press, could adjust related valve by inlet point stove furnace roof, when pressing the adjustment valve switch, signal in the valve adjustment will be received by system, stop flow monitoring; After adjusting end, must press interrupt switch, just can leave the ignition furnace furnace roof, when pressing the adjustment end switch, system will be subjected to valve and adjust end signal.
Described flow monitoring device judges whether to stop up according to the Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with x burner and the ratio of all burner total flow sums; The real-time Kx value that described flow monitoring device will monitor compares with the initial KX value of burner after cleaning out of presetting, if the Kx value is less than initial KX value in real time, then sends the cleaning instruction; After repeatedly clearing up, the Kx value is then sent the burner plugging fault and is reported to the police still less than initial KX value in real time, and alert is overhauled this burner.
Compared with prior art, the invention has the advantages that:
1, the burner tar processing method of burner system of the present invention and employing said system, flow in the gas pipeline is monitored in real time, can find to pile up in the burner situation of tar aborning in time, effectively, and then can carry out in time processing to it, effectively prevent security incident;
2, the burner tar processing method of burner system of the present invention and employing said system, after receiving control signal, can be under operatorless situation get rid of tar automatically and not influence production by the mode of medium flushing, the original burner system that compares be safer, reliable, intelligent and be conducive to improve operating rate and the output of whole ignition furnace.
Description of drawings
Fig. 1 is the structural representation of burner system in the prior art.
Fig. 2 is the main TV structure schematic diagram of burner system in the prior art.
Fig. 3 is the sectional structure schematic diagram at A-A place among Fig. 2.
Fig. 4 is the sectional structure schematic diagram at B-B place among Fig. 2.
Fig. 5 is the structural representation of burner system among the present invention.
Fig. 6 is the plan structure schematic diagram of the present invention in concrete application example.
Fig. 7 is the sectional structure schematic diagram at C-C place among Fig. 5.
Fig. 8 is the present invention's composition framework schematic diagram in concrete application example when adopting non-return valve.
Fig. 9 is the present invention's workflow schematic diagram in concrete application example when adopting non-return valve.
Figure 10 is the present invention's composition framework schematic diagram in concrete application example when adopting magnetic valve.
Figure 11 is the present invention's workflow schematic diagram in concrete application example when adopting magnetic valve.
Marginal data:
1, fuel channel; 2, air duct; 3, fuel valve before the burner; 4, air door before the burner; 5, fuel inlet pipe; 6, air intake pipe; 7, burner bleed pipe; 8, ignition furnace furnace roof; 9, medium flushing pipe; 10, control valve; 11, flow-through orifice; 12, non-return valve.
The specific embodiment
Below with reference to Figure of description and specific embodiment the present invention is described in further details.
As Fig. 5～shown in Figure 7, the burner system of the anti-blocking tar of the present invention, comprise fuel inlet pipe 5, air intake pipe 6 and the burner bleed pipe 7 that is connected with fuel inlet pipe 5 and air intake pipe 6 simultaneously, fuel inlet pipe 5 links to each other and fuel valve 3 before connecting line is provided with burner with fuel channel 1, air intake pipe 6 link to each other with air duct 2 and before connecting line is provided with burner air door 4, the air-flow of introducing from fuel inlet pipe 5, air intake pipe 6 converges by 7 ejections of burner bleed pipe.The present invention is provided with the flow monitoring device at fuel inlet pipe 5 and/or air intake pipe 6, utilizes the flow monitoring assembly that the flow in the fuel channel 1 is monitored in real time, in case the situation that tar stops up occurs.
In the present embodiment, the detecting unit that the flow monitoring device comprises processing unit and is used for monitoring real-time traffic, the flow value that processing unit monitors according to detecting unit is made the judgement of whether stopping up.
In the present embodiment, burner adopts coal gas to act as a fuel, and detecting unit is flow-through orifice 11 or V-type awl or other flow detecting elements.Because aborning, the temperature of ignition furnace can slightly be regulated according to production requirement, can not be as the Rule of judgment of burner obstruction so detect the reduction of air (coal gas) absolute flow rate of burner.Processing unit is to judge whether to stop up according to the Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with x burner and the ratio of all burner total flow sums.That is, when the ignition furnace steady production, an individual relative constant proportionate relationship is arranged between air (coal gas) flow that each burner distributes and total air (coal gas) flow:
Kx=Lx/ZL
Wherein, Kx is that x burner keeps constant value substantially when steady production.Lx is air (coal gas) flow of x burner, and ZL is air (coal gas) flow on the house steward.ZL=L1+L2+ ... Ln, wherein n is the sequence number of last burner, namely total flow equals the flow sum of whole burners.
As can be seen, when some burners stop up, will cause its air (coal gas) absolute flow rate to descend, its corresponding Kx value (relative discharge) also will descend.So surpass a certain limit (for example the Kx value descends 10% than preset reference value KX) by the rate of descent that detects the Kx value, can judge that this burner stops up.
But, in ignition furnace production, also need sometimes according to field condition indivedual valves to be adjusted.Manually adjust the decline that valve also can cause the Kx value.This situation must be got rid of by system, just can make accurate judgement.Therefore, further flow monitoring device and being used for controlling the interrupt switch that flow monitoring opens and closes in the present embodiment links to each other, interrupt switch is arranged on the passage place of inlet point stove furnace roof, when the workman removes ignition furnace furnace roof control valve, must press interrupt switch, ability inlet point stove furnace roof is adjusted related valve; After adjusting end, also interrupt switch must be pressed, just ignition furnace can be left.When pressing interrupt switch, signal in the valve adjustment will be received by system; When pressing interrupt switch for the second time, system will be subjected to valve and adjust end signal.When system receive valve adjust in signal, system will shield the obstruction warning function, when the adjustment end signal is received by system, will recomputate the Kx value of each burner, and with it as new KX a reference value.In specific embodiment, this interrupt switch can adopt gate control system, when namely operating personnel are by gate control system, finishes the function of interrupt switch automatically.
In the present embodiment, the host computer that processing unit and has warning function links to each other.By the flow signal that flow-through orifice 11 is gathered, through being sent to the host computer in the master-control room of workshop after the processing of processing unit, namely finish the real-time monitoring to gas flow in the burner.If the situation of tar has taken place to pile up in certain burner in producing, then must cause reducing suddenly with the gas flow of the corresponding pipeline of this burner, so just can in time send alarm signal.
In the present embodiment, the present invention also comprises an automatic cleaning apparatus, and this automatic cleaning apparatus comprises medium flushing pipe 9 and the cleansing medium source that links to each other with burner bleed pipe 7.The entrance point of this medium flushing pipe 9 links to each other with the scouring media source, and medium flushing pipe 9 is provided with control valve 10.
Adopt in the scouring media source can not fuel gas source, and for example other non-combustible gas such as steam can not must have uniform temperature and pressure by fuel gas source, to improve the flowability of tar, in order to thoroughly clean the tar that stops up burner.In the present embodiment, to be example with high steam as scouring media, it is installed in by the burner, inserts with the rightabout end of ejiction opening from burner bleed pipe 7.When receiving the alarm signal that master-control room sends, then open the control valve 10 of corresponding burner automatically, with high steam cleaning is washed away in burner inside, gas flow is replied normal value in burner, after receiving all clear signal that master-control room sends, closed control valve 10 again.
In the present embodiment, be equiped with non-return valve 12 or solenoid electric valve at fuel inlet pipe 5 and air intake pipe 6.Because steam pressure is bigger, when flushing, be easy to flow backward in fuel inlet pipe 5 and air intake pipe 6 or even coal gas and the air header (fuel channel 1 and air duct 2), have influence on the normal operation of other burners, so fuel inlet pipe 5 and air intake pipe 6 at each burner have been set up non-return valve 12, prevent that steam from flowing backwards.Be appreciated that also and can adopt solenoid electric valve, this solenoid electric valve is with regard to standard-sized sheet and complete shut-down two states, and system sends and closes the solenoid electric valve instruction when cleaning burner, cleans to send when finishing and opens the solenoid electric valve instruction.
Referring to Fig. 8 and shown in Figure 9, the present invention further provides a kind of burner tar processing method that has adopted above-mentioned burner system, that is: when sending tar, system stops up the burner warning, system will send the order that the control valve 10 of corresponding burner is opened, instruct during sending system's cleaning burner simultaneously, stop the obstruction of all the other burners is detected.By the time after cleaning is finished, carry out burner more again and stop up detection.Be in and close automatically after control valve 10 in the cleaning state will be opened a period of time (for example 5 minutes), burner this moment ventilating coal gas and air again enter ordinary production.Because in scale removal process, be to use non-return valve 12 to prevent opposing steam flow, do not operate the space gas valve, so the aperture of the gas valve of this burner and air door is preceding identical with cleaning, do not change.Can derive thus, the corresponding Kx value of the burner that tar is cleaned out should be substantially equal to the KX a reference value (for example error is in 5%) of the preceding burner of burner cleaning.The real-time Kx value that the flow monitoring device will monitor compares with the initial KX value of burner after cleaning out of presetting, after if burner is once cleared up, there is following mathematical relationship in its real-time Kx value than initial KX value: the initial KX value＜0.95(0.95 of Kx/ is a reference value in real time, revise according to on-site actual situations), system will send the cleaning instruction again, and control valve 10 will be opened a cleaning period again.If it is unclean to detect the burner cleaning again, system will carry out once cleaning again.If the cleaning back concerns existence still in the initial KX value of Kx/＜0.95 in real time, system will send the burner plugging fault and report to the police three times (clearing times can be revised according to on-site actual situations), and alert is overhauled this burner.If what arrange on fuel inlet pipe 5 and the air intake pipe 6 is not non-return valve 12, but magnetic valve, then system will send the closed electromagnetic valve instruction between clear-up period, and cleaning is sent the magnetic valve OPEN after finishing.Referring to Figure 10 and Figure 11, when replacing to non-return valve 12 with magnetic valve, then not only to control the control valve 10 on the medium flushing pipe 9, also need to control the magnetic valve that is positioned on fuel inlet pipe 5 and the air intake pipe 6; That is, after judging certain burner generation tar and stop up by flow detection, can close the magnetic valve on corresponding fuel inlet pipe 5 and the air intake pipe 6 earlier, open control valve 10 and carry out the tar cleaning.After cleaning out, behind closed control valve 10, open the magnetic valve on fuel inlet pipe 5 and the air intake pipe 6 again; All the other processes are consistent when adopting non-return valve 12, just repeat no more at this.
This shows, use burner of the present invention system after, can find to pile up in the burner situation of tar aborning timely and effectively, and can under operatorless situation, get rid of tar automatically and not influence production.The original burner system that compares is safer, reliable, intelligent and be conducive to improve operating rate and the output of whole ignition furnace.
Below only be preferred embodiment of the present invention, protection scope of the present invention also not only is confined to above-described embodiment, and all technical schemes that belongs under the thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the principle of the invention prerequisite should be considered as protection scope of the present invention.
Claims (14)
1. the burner system of an anti-blocking tar, comprise fuel inlet pipe (5), air intake pipe (6) and the burner bleed pipe (7) that is connected with fuel inlet pipe (5) and air intake pipe (6) simultaneously, it is characterized in that: described fuel inlet pipe (5) and/or air intake pipe (6) are provided with the flow monitoring device.
2. the burner system of anti-blocking tar according to claim 1, it is characterized in that: the detecting unit that described flow monitoring device comprises processing unit and is used for monitoring real-time traffic, described processing unit judges whether to stop up according to the Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with x burner and the ratio of all burner total flow sums.
3. the burner system of anti-blocking tar according to claim 2 is characterized in that: described flow monitoring device and is used for controlling the interrupt switch that flow monitoring opens and closes and links to each other.
4. the burner system of anti-blocking tar according to claim 2 is characterized in that: described detecting unit is flow-through orifice (11) or V-type awl.
5. the burner system of anti-blocking tar according to claim 2, it is characterized in that: the host computer that described processing unit and has warning function links to each other.
6. according to the burner system of any described anti-blocking tar in the claim 1～5, it is characterized in that: also comprise an automatic cleaning apparatus, described automatic cleaning apparatus comprises medium flushing pipe (9) and the cleansing medium source that is communicated with burner bleed pipe (7).
7. the burner system of anti-blocking tar according to claim 6 is characterized in that: described scouring media source is for can not fuel gas source.
8. the burner system of anti-blocking tar according to claim 6, it is characterized in that: described medium flushing pipe (9) is provided with control valve (10).
9. the burner system of anti-blocking tar according to claim 6 is characterized in that: described medium flushing pipe (9) is gone up the end access of the direction opposite with ejiction opening from burner bleed pipe (7).
10. the burner system of anti-blocking tar according to claim 6 is characterized in that: be equiped with non-return valve (12) or solenoid electric valve on described fuel inlet pipe (5) and the air intake pipe (6).
11. burner tar processing method that adopts in the claim 1～10 each described burner system, it is characterized in that: the corresponding flow monitoring device of each burner, monitor changes in flow rate in fuel inlet pipe (5) and/or the air intake pipe (6) in real time by the flow monitoring device; When the flow monitoring device monitoring to certain burner stifled tar takes place, send tar and stop up burner and report to the police, and send and instruct during carrying out the cleaning burner; Simultaneously, stop the obstruction of all the other burners is detected, after by the time cleaning is finished, carry out burner more again and stop up detection.
12. burner tar processing method according to claim 11 is characterized in that: at one time, only a burner is carried out the tar clear instruction.
13. burner tar processing method according to claim 11, it is characterized in that: at the ignition furnace furnace roof interrupt switch is set, when operating personnel remove ignition furnace furnace roof control valve, the adjustment valve switch that must press, could adjust related valve by inlet point stove furnace roof, when pressing the adjustment valve switch, signal in the valve adjustment will be received by system, stop flow monitoring; After adjusting end, must press interrupt switch, just can leave the ignition furnace furnace roof, when pressing the adjustment end switch, system will be subjected to valve and adjust end signal.
14. burner tar processing method according to claim 11, it is characterized in that: described flow monitoring device judges whether to stop up according to the Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with x burner and the ratio of all burner total flow sums; The real-time Kx value that described flow monitoring device will monitor compares with the initial KX value of burner after cleaning out of presetting, if the Kx value is less than initial KX value in real time, then sends the cleaning instruction; After repeatedly clearing up, the Kx value is then sent the burner plugging fault and is reported to the police still less than initial KX value in real time, and alert is overhauled this burner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110452414.4A CN103185340B (en) | 2011-12-30 | 2011-12-30 | The combustion nozzle system of anti-blocking tar and the burner tar processing method of employing said system |
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| CN201110452414.4A CN103185340B (en) | 2011-12-30 | 2011-12-30 | The combustion nozzle system of anti-blocking tar and the burner tar processing method of employing said system |
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| CN104959237A (en) * | 2015-07-08 | 2015-10-07 | 福州大学 | Intelligent unblocking device |
| CN108120311A (en) * | 2017-11-23 | 2018-06-05 | 中冶长天国际工程有限责任公司 | A kind of diagnosis of sintering machine charge level and adaptive controller and its method based on video identification |
| CN110243194A (en) * | 2019-05-08 | 2019-09-17 | 安德森热能科技（苏州）有限责任公司 | A kind of full-automatic method for cleaning and its cleaning control device of pure oxygen combustor |
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| CN108120311A (en) * | 2017-11-23 | 2018-06-05 | 中冶长天国际工程有限责任公司 | A kind of diagnosis of sintering machine charge level and adaptive controller and its method based on video identification |
| CN110243194A (en) * | 2019-05-08 | 2019-09-17 | 安德森热能科技（苏州）有限责任公司 | A kind of full-automatic method for cleaning and its cleaning control device of pure oxygen combustor |
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| Publication number | Publication date |
|---|---|
| CN103185340B (en) | 2015-11-25 |
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