CN103185340B - The combustion nozzle system of anti-blocking tar and the burner tar processing method of employing said system - Google Patents
The combustion nozzle system of anti-blocking tar and the burner tar processing method of employing said system Download PDFInfo
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Abstract
The invention discloses a kind of combustion nozzle system and burner tar processing method of anti-blocking tar, the burner bleed pipe that combustion nozzle system comprises fuel inlet pipe, air intake pipe and is connected with air intake pipe with fuel inlet pipe simultaneously, fuel inlet pipe and/or air intake pipe are provided with flow monitoring device.The method is: the corresponding flow monitoring device of each burner, by the changes in flow rate in flow monitoring device Real-Time Monitoring fuel inlet pipe and/or air intake pipe; When flow monitoring device monitor certain burner there is stifled tar time, send tar blocking burner and report to the police, and send perform cleaning burner during instruction; Meanwhile, stop the jam detection to all the other burners, until after having cleared up, then re-start burner jam detection.The present invention have automaticity high, tar stopping state can be monitored in real time, make the tar energy very first time in burner obtain getting rid of and then improving burner ignition quality, improve the advantages such as ignition furnace operating rate.
Description
Technical field
The present invention is mainly concerned with sintering process apparatus field, refers in particular to a kind of combustion nozzle system of anti-blocking tar and adopts the burner tar processing method of said system.
Background technology
In modern sintering process process, ignition furnace is used to provide hot strip flame to mix surface, make solid fuel ignition wherein, and top layer compound is sintered under ignition furnace high-temperature flue gas and solid fuel ignition exothermic effects, the heat simultaneously providing sufficient oxygen amount to be put aside on top layer by air exhauster exhausting is passed to lower one deck compound, impels the solid fuel of lower one deck to burn away thus sintering process is rapidly to down and carry out and then complete sintering process.
Burner is being commonly called as of burner on ignition furnace, can be regarded as the abbreviation of " nozzle made a fire ", is one of the most key parts of ignition furnace.Be commonly referred to as burner body part, have fuel inlet, air intake and squit hole, play and distribute fuel and combustion air and the effect spraying after-combustion in a certain way.
Current sintering ignition furnace, by differences such as the quantity of its burner, angle of inclination and internal-combustion media, can be divided into double-bevel, single bevel, three inclineds, preposition middle burner formula, coke-stove gas, blast furnace gas and heavy oil ignition furnace etc.
As shown in Figure 1 to 4, a kind of traditional combustion nozzle system structures of three row's formulas comprise point three rows and are arranged in burner on ignition furnace furnace roof 8, often organize burner and include fuel inlet pipe 5, air intake pipe 6 and burner bleed pipe 7, fuel inlet pipe 5 is connected with fuel channel 1 and fuel valve 3 before be provided with burner on connecting line, air intake pipe 6 is connected with air duct 2 and air door 4 before be provided with burner on connecting line, sprays after the air-flow introduced from fuel inlet pipe 5, air intake pipe 6 converges through burner bleed pipe 7.
In use, often there is the situation that tar blocks up burner in the ignition furnace of said structure, the burner that can cause time serious being blocked cannot jet out flames, and flame flashes back in fuel channel 1, causes serious negative effect by the quality of production and safety coefficient.Conventional tar blocks up burner reason and respective handling mode is as follows:
1. gas quality is poor, contained tar is many: general Large Steel ironworks is all provided with filter in Gas Pressurization Station outlet, can filter from pressurizing point coal gas out, but indivedual medium-sized and small enterprises are in order to save cost, often cancel filter, this just causes the gas quality delivering to ignition furnace not high, and the ratio of inner impurities, water and tar is higher, thus causes burner to be blocked by tar.
2. ignition furnace is without tar detection system, cannot clear up burner in time: it is not that short-term is formed that tar blocks up burner, and is through long time integration, and tar is cumulative in burner, the final consequence formed.Owing to not finding the method that effectively can detect tar quantity in burner, therefore in conventional point stove combustion nozzle system, tar checkout gear is not set, this causes in ignition furnace production process, operator must pay close attention to burner flame fired state, and when finding that burner combustion is abnormal, such as flame ejection is unable, burner outer wall reddens, then must carry out tar cleaning operation to this burner at once.If operator cannot pile up the situation of tar in Timeliness coverage burner, by the time burner cannot jet out flames or flame flashes back to fuel channel time stop production to overhaul again, come too late.
3. there is no the automatic remover of tar: conventional point stove combustion nozzle system does not arrange the automatic remover of tar, when operative employee clears up tar in burner, need first to close the coal gas be connected with this burner, valve on air duct, and then the big nut of burner afterbody is turned on, be often with a long drill rod to disclose from burner top into, with the method that this is original, tar is disclosed in burner, not only burner internal structure is damaged, and now blocked by tar in burner, coal gas cannot enter burner hearth, workman is probably smoked by coal gas remaining in burner when operating, safety coefficient is extremely low.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical problem existed for prior art, the invention provides the burner tar processing method that a kind of automaticity is high, can monitor tar stopping state in real time, make the tar energy very first time in burner obtain getting rid of and then improving burner ignition quality, improve the combustion nozzle system of the anti-blocking tar of ignition furnace operating rate and employing said system thereof.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A combustion nozzle system for anti-blocking tar, the burner bleed pipe comprising fuel inlet pipe, air intake pipe and be connected with air intake pipe with fuel inlet pipe simultaneously, described fuel inlet pipe and/or air intake pipe are provided with flow monitoring device.
As a further improvement on the present invention:
Described flow monitoring device comprises processing unit and is used for monitoring the detecting unit of real-time traffic, described processing unit judges whether to block according to Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with an xth 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 is connected.
Described detecting unit is flow-through orifice or V-type cone.
The host computer that described processing unit and has warning function is connected.
The present invention also comprises an automatic cleaning apparatus, and described automatic cleaning apparatus comprises the medium washes pipeline and cleansing medium source that are communicated with burner bleed pipe.
Described scouring media source is non-combustible source of the gas.
Described medium washes pipeline is provided with control valve.
The end access in the direction that described medium washes pipeline is contrary with ejiction opening from burner bleed pipe.
Described fuel inlet pipe and air intake pipe are equiped with non-return valve or solenoid electric valve.
The present invention further provides a kind of burner tar processing method adopting above-mentioned combustion nozzle system, that is: the corresponding flow monitoring device of each burner, by the changes in flow rate in flow monitoring device Real-Time Monitoring fuel inlet pipe and/or air intake pipe; When flow monitoring device monitor certain burner there is stifled tar time, send tar blocking burner and report to the police, and send perform cleaning burner during instruction; Meanwhile, stop the jam detection to all the other burners, until after having cleared up, then re-start burner jam detection.
Further improvement as said method:
At one time, only tar clear instruction is performed to a burner.
At ignition furnace furnace roof, interrupt switch is set, when operating personnel remove ignition furnace furnace roof control valve, the regulating valve door switch that must press, related valve could be adjusted by inlet point stove furnace roof, when pressing regulating valve door switch, system will receive signal in valve adjustment, stop flow monitoring; After adjustment terminates, must press interrupt switch, just can leave ignition furnace furnace roof, when pressing adjustment end switch, system will be subject to valve adjustment end signal.
Described flow monitoring device judges whether to block according to Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with an xth burner and the ratio of all burner total flow sums; The real-time Kx value monitored and the initial KX value of burner after cleaning out preset compare by described flow monitoring device, if Kx value is less than initial KX value in real time, then send cleaning instruction; After repeatedly clearing up, real-time Kx value is still less than initial KX value, then send burner plugging fault and report to the police, alert is overhauled this burner.
Compared with prior art, the invention has the advantages that:
1, the burner tar processing method of combustion nozzle system of the present invention and employing said system, flow in gas pipeline is monitored in real time, aborning in time, effectively can find the situation of piling up tar in burner, and then the process can carrying out in time to it, effectively prevent security incident;
2, the burner tar processing method of combustion nozzle system of the present invention and employing said system, after receiving control signal, can under operatorless situation, automatically get rid of tar by the mode of medium washes and not affect production, original combustion nozzle system of comparing be safer, reliable, intelligent and be conducive to improving the operating rate of whole ignition furnace and output.
Accompanying drawing explanation
Fig. 1 is the structural representation of combustion nozzle system in prior art.
Fig. 2 is the main TV structure schematic diagram of combustion nozzle system in prior art.
Fig. 3 is the sectional structure schematic diagram at A-A place in Fig. 2.
Fig. 4 is the sectional structure schematic diagram at B-B place in Fig. 2.
Fig. 5 is the structural representation of combustion nozzle system in the present invention.
Fig. 6 is the plan structure schematic diagram of the present invention in embody rule example.
Fig. 7 is the sectional structure schematic diagram at C-C place in Fig. 5.
Fig. 8 is the composition block schematic illustration of the present invention when adopting non-return valve in embody rule example.
Fig. 9 is the workflow schematic diagram of the present invention when adopting non-return valve in embody rule example.
Figure 10 is the composition block schematic illustration of the present invention when adopting magnetic valve in embody rule example.
Figure 11 is the workflow schematic diagram of the present invention when adopting magnetic valve in embody rule example.
Marginal data:
1, fuel channel; 2, air duct; 3, fuel valve before burner; 4, air door before burner; 5, fuel inlet pipe; 6, air intake pipe; 7, burner bleed pipe; 8, ignition furnace furnace roof; 9, medium washes pipeline; 10, control valve; 11, flow-through orifice; 12, non-return valve.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As shown in Fig. 5 ~ Fig. 7, the combustion nozzle system of the anti-blocking tar of the present invention, the burner bleed pipe 7 comprising fuel inlet pipe 5, air intake pipe 6 and be connected with air intake pipe 6 with fuel inlet pipe 5 simultaneously, fuel inlet pipe 5 is connected with fuel channel 1 and fuel valve 3 before be provided with burner on connecting line, air intake pipe 6 is connected with air duct 2 and air door 4 before be provided with burner on connecting line, sprays after the air-flow introduced from fuel inlet pipe 5, air intake pipe 6 converges through burner bleed pipe 7.The present invention is provided with flow monitoring device on fuel inlet pipe 5 and/or air intake pipe 6, utilizes flow monitoring assembly to carry out Real-Time Monitoring to the flow in fuel channel 1, in case there is the situation that tar blocks.
In the present embodiment, flow monitoring device comprises processing unit and is used for monitoring the detecting unit of real-time traffic, and processing unit makes the judgement whether blocked according to the flow value that detecting unit monitors.
In the present embodiment, burner adopts coal gas as fuel, and detecting unit is that flow-through orifice 11 or V-type are bored or other flow detecting elements.Because aborning, the temperature of ignition furnace slightly can regulate according to production requirement, so detect that the reduction of air (coal gas) absolute flow rate of burner can not as the Rule of judgment of burner blocking.Processing unit judges whether to block according to Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with an xth burner and the ratio of all burner total flow sums.That is, when ignition furnace steady production, the proportionate relationship of individual relative constancy between air (coal gas) flow that each burner distributes and total air (coal gas) flow, is had:
Kx=Lx/ZL
Wherein, Kx is that an xth burner keeps constant value substantially when steady production.Lx is air (coal gas) flow of an xth burner, and ZL is air (coal gas) flow on house steward.ZL=L1+L2+ ... Ln, wherein n is the sequence number of last burner, and namely total flow equals the flow sum of whole burner.
Can find out, when some burners block, its air (coal gas) absolute flow rate will be caused to decline, the Kx value (relative discharge) of its correspondence also will decline.So exceed a certain limit (such as Kx value declines 10% than a reference value KX preset) by the rate of descent detecting Kx value, can judge that this burner blocks.
But, sometimes also need to adjust indivedual valve according to field condition in ignition furnace is produced.Manual adjustment valve also can cause the decline of Kx value.System must get rid of this situation, just can make accurate judgement.Therefore, be used for flow monitoring device and controlling the interrupt switch that flow monitoring opens and closes in the present embodiment to be further connected, interrupt switch is arranged on the passage place of inlet point stove furnace roof, when workman removes ignition furnace furnace roof control valve, interrupt switch must be pressed, ability inlet point stove furnace roof, adjustment related valve; After adjustment terminates, also must press interrupt switch, just can leave ignition furnace.When pressing interrupt switch, system will receive signal in valve adjustment; When second time presses interrupt switch, system will be subject to valve adjustment end signal.When signal in system acceptance to valve adjustment, system, by shielding blocking warning function, when system receives adjustment end signal, will recalculate the Kx value of each burner, and it can be used as new KX a reference value.In a particular embodiment, this interrupt switch can adopt gate control system, when namely operating personnel are by gate control system, automatically completes the function of interrupt switch.
In the present embodiment, the host computer that processing unit and has warning function is connected.By the flow signal that flow-through orifice 11 gathers, after the process of processing unit, be sent to the host computer in the master-control room of workshop, namely complete the real-time monitoring to gas flow in burner.If there occurs in producing in certain burner and pile up burnt oil condition, then the gas flow of pipeline corresponding to this burner must be caused to reduce suddenly, so just can send alarm signal in time.
In the present embodiment, the present invention also comprises an automatic cleaning apparatus, and this automatic cleaning apparatus comprises the medium washes pipeline 9 and cleansing medium source that are connected with burner bleed pipe 7.The entrance point of this medium washes pipeline 9 is connected with scouring media source, and medium washes pipeline 9 is provided with control valve 10.
Scouring media source adopts non-combustible source of the gas, such as other non-combustible gas such as steam, and non-combustible source of the gas must have uniform temperature and pressure, to improve the mobility of tar, so that thoroughly cleaning blocks the tar of burner.In the present embodiment, for by high steam as scouring media, it is arranged on by burner, accesses from burner bleed pipe 7 with the rightabout end of ejiction opening.When receiving the alarm signal that master-control room sends, then automatically open the control valve 10 of corresponding burner, with high steam, cleaning is washed away to burner inside, until gas flow replys normal value in burner, after receiving the green signal that master-control room sends, then closed control valve 10.
In the present embodiment, fuel inlet pipe 5 and air intake pipe 6 are equiped with non-return valve 12 or solenoid electric valve.Because steam pressure is larger, be easy to flow backward in fuel inlet pipe 5 and air intake pipe 6 or even coal gas and air header (fuel channel 1 and air duct 2) when rinsing, have influence on the normal operation of other burners, therefore non-return valve 12 has been set up on the fuel inlet pipe 5 and air intake pipe 6 of each burner, prevent steam from flowing backwards.Be appreciated that and also can adopt solenoid electric valve, this solenoid electric valve is with regard to standard-sized sheet and complete shut-down two states, and during cleaning burner, system sends and closes solenoid electric valve instruction, sends and open solenoid electric valve instruction at the end of cleaning.
Shown in Fig. 8 and Fig. 9, the present invention further provides a kind of burner tar processing method that have employed above-mentioned combustion nozzle system, that is: report to the police when system sends tar blocking burner, the order that the control valve 10 sending corresponding burner is opened by system, instruction during simultaneously sending cleaned system burner, stops the jam detection to all the other burners.Until after having cleared up, then re-start burner jam detection.The control valve 10 be in cleaning state will be opened a period of time (such as 5 minutes) and automatically close afterwards, and now burner incites somebody to action ventilating coal gas and air again, enters normal production.Because in scale removal process, be use non-return valve 12 to prevent opposing steam flow, do not operate space gas valve, so the gas valve of this burner is identical with before cleaning with the aperture of air door, 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 (such as error is within 5%) of the front burner of burner cleaning.The real-time Kx value monitored and the initial KX value of burner after cleaning out preset compare by flow monitoring device, if after burner is once cleared up, there is following mathematical relationship than initial KX value in its real-time Kx value: the initial KX value <0.95(0.95 of Kx/ is a reference value in real time, according to on-site actual situations amendment), system will send cleaning instruction again, and control valve 10 will open a cleaning period again.If again detect that burner cleaning is unclean, system will perform again and once clear up.Three times (clearing times can be revised according to on-site actual situations) if real-time Kx/ initial KX value <0.95 relation still exists after cleaning, system will send burner plugging fault and report to the police, and alert is overhauled this burner.If what fuel inlet pipe 5 and air intake pipe 6 were arranged is not non-return valve 12, but magnetic valve, then system will send closed electromagnetic valve instruction between clear-up period, send magnetic valve OPEN after cleaning terminates.See Figure 10 and Figure 11, when replacing to non-return valve 12 with magnetic valve, then not only the control valve 10 on medium washes pipeline 9 to be controlled, also needing to control to be positioned at the magnetic valve on fuel inlet pipe 5 and air intake pipe 6; That is, after judging the blocking of certain burner generation tar by flow detection, first can close the magnetic valve on corresponding fuel inlet pipe 5 and air intake pipe 6, open control valve 10 and carry out tar cleaning.After cleaning out, after closed control valve 10, then open the magnetic valve on fuel inlet pipe 5 and air intake pipe 6; Consistent when all the other processes and employing non-return valve 12, just repeat no more at this.
As can be seen here, after using combustion nozzle system of the present invention, the situation of piling up tar in burner can be found aborning timely and effectively, and can automatically get rid of tar and not affect production under operatorless situation.Original combustion nozzle system of comparing is safer, reliable, intelligent and be conducive to improving the operating rate of whole ignition furnace and output.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (12)
1. the combustion nozzle system of an anti-blocking tar, the burner bleed pipe (7) comprising fuel inlet pipe (5), air intake pipe (6) and be connected with air intake pipe (6) with fuel inlet pipe (5) simultaneously, is characterized in that: described fuel inlet pipe (5) and/or air intake pipe (6) are provided with flow monitoring device; Described flow monitoring device comprises processing unit and is used for monitoring the detecting unit of real-time traffic, described processing unit judges whether to block according to Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with an xth burner and the ratio of all burner total flow sums; The real-time Kx value monitored and the initial KX value of burner after cleaning out preset compare by described flow monitoring device, if Kx value is less than initial KX value in real time, then send cleaning instruction; After repeatedly clearing up, real-time Kx value is still less than initial KX value, then send burner plugging fault and report to the police, alert is overhauled this burner.
2. the combustion nozzle system of anti-blocking tar according to claim 1, is characterized in that: described flow monitoring device and is used for controlling the interrupt switch that flow monitoring opens and closes and is connected.
3. the combustion nozzle system of anti-blocking tar according to claim 1, is characterized in that: described detecting unit is flow-through orifice (11) or V-type cone.
4. the combustion nozzle system of anti-blocking tar according to claim 1, is characterized in that: the host computer that described processing unit and has warning function is connected.
5. according to the combustion nozzle system of the anti-blocking tar in Claims 1 to 4 described in any one, it is characterized in that: also comprise an automatic cleaning apparatus, described automatic cleaning apparatus comprises the medium washes pipeline (9) and cleansing medium source that are communicated with burner bleed pipe (7).
6. the combustion nozzle system of anti-blocking tar according to claim 5, is characterized in that: described scouring media source is non-combustible source of the gas.
7. the combustion nozzle system of anti-blocking tar according to claim 5, is characterized in that: described medium washes pipeline (9) is provided with control valve (10).
8. the combustion nozzle system of anti-blocking tar according to claim 5, is characterized in that: the end access in the direction that described medium washes pipeline (9) is contrary with ejiction opening from burner bleed pipe (7).
9. the combustion nozzle system of anti-blocking tar according to claim 5, is characterized in that: described fuel inlet pipe (5) and air intake pipe (6) are equiped with non-return valve (12) or solenoid electric valve.
10. one kind adopts the burner tar processing method of the combustion nozzle system according to any one of claim 1 ~ 9, it is characterized in that: the corresponding flow monitoring device of each burner, by the changes in flow rate in flow monitoring device Real-Time Monitoring fuel inlet pipe (5) and/or air intake pipe (6); When flow monitoring device monitor certain burner there is stifled tar time, send tar blocking burner and report to the police, and send perform cleaning burner during instruction; Meanwhile, stop the jam detection to all the other burners, until after having cleared up, then re-start burner jam detection; Described flow monitoring device judges whether to block according to Kx value, and wherein Kx is the real-time traffic of the signal piping corresponding with an xth burner and the ratio of all burner total flow sums; The real-time Kx value monitored and the initial KX value of burner after cleaning out preset compare by described flow monitoring device, if Kx value is less than initial KX value in real time, then send cleaning instruction; After repeatedly clearing up, real-time Kx value is still less than initial KX value, then send burner plugging fault and report to the police, alert is overhauled this burner.
11. burner tar processing methods according to claim 10, is characterized in that: at one time, only perform tar clear instruction to a burner.
12. burner tar processing methods according to claim 10, it is characterized in that: at ignition furnace furnace roof, interrupt switch is set, when operating personnel remove ignition furnace furnace roof control valve, the regulating valve door switch that must press, related valve could be adjusted by inlet point stove furnace roof, when pressing regulating valve door switch, system will receive signal in valve adjustment, stop flow monitoring; After adjustment terminates, must press interrupt switch, just can leave ignition furnace furnace roof, when pressing adjustment end switch, system will be subject to valve adjustment end signal.
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| CN104959237B (en) * | 2015-07-08 | 2017-12-08 | 福州大学 | Intelligent Cleaning device for pipeline |
| 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 |
| CN110243194B (en) * | 2019-05-08 | 2020-12-18 | 安德森热能科技（苏州）有限责任公司 | Full-automatic cleaning method and cleaning control device for pure oxygen combustor |
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