CN103980919A - Coke oven gas pipeline of boiler and cleaning method thereof - Google Patents
Coke oven gas pipeline of boiler and cleaning method thereof Download PDFInfo
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- CN103980919A CN103980919A CN201410212433.3A CN201410212433A CN103980919A CN 103980919 A CN103980919 A CN 103980919A CN 201410212433 A CN201410212433 A CN 201410212433A CN 103980919 A CN103980919 A CN 103980919A
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Abstract
The invention provides a coke oven gas pipeline of a boiler and a cleaning method thereof. The gas pipeline comprises a pipeline main body, a burner positioned at one end of the pipeline main body, a fast valve arranged on the pipeline main body, and a regulating valve arranged on the pipeline main body and positioned at the side, which is adjacent to the burner, of the fast valve, wherein a reserved pipe orifice is arranged on the pipeline main body between the fast valve and the regulating valve and is used for connecting a nitrogen pipeline, at least two sections of pipelines between the regulating valve and the burner are detachable pipelines, and the pipelines are connected by virtue of detachable connecting pieces. By adopting the cleaning method, tar on the coke oven gas pipeline and the burner can be cleaned while the boiler runs, so that the maximum burning quantity of the coke oven gas of the boiler can be maintained.
Description
Technical field
The present invention relates to a kind of boiler coke oven gas pipe and method for cleaning thereof, more particularly, the present invention relates to a kind of a kind of boiler coke oven gas pipe and method for cleaning thereof that can Hand scarf.
Background technology
Owing to containing macromolecule hydrocarbon material and sulfide in coke-oven gas, these materials easily deposit or cause corrosion to form anvil cinder to pipeline under wet environment in pipeline, thereby cause line clogging, reduce coke-oven gas burning amount.Part tar hangs over the switch that affects variable valve on variable valve, makes it cannot realize standard-sized sheet, also can cause boiler coke-oven gas burning amount to decline, move and adjust difficulty.
Meanwhile, when coke-oven gas is flowed through nozzles, tar easily hangs on nozzles, form nozzles coking, and working time, longer coking is more, and the higher obstruction speed of coking coal amount is faster, causes nozzles flow area to dwindle gradually, causes nozzles to stop up, and burning amount reduces gradually.
In prior art, after coke oven gas pipe and nozzles stop up, can only after boiler shutdown, could clear up to nozzles the work of tar, and continually boiler be carried out to blowing out operation, impact is normally produced.
Summary of the invention
The object of the present invention is to provide a kind of boiler coke oven gas pipe and method for cleaning thereof, according to the present invention, can realize the tar of Hand scarf boiler coke oven gas pipe.
According to a kind of boiler coke oven gas pipe of the present invention, comprising: pipe main body; Nozzles, are positioned at one end of pipe main body; Quick-closing valve, is arranged on pipe main body; Variable valve, is arranged on pipe main body, is positioned at a side of the close nozzles of quick-closing valve; Wherein, the reserved mouth of pipe is set on the pipe main body between quick-closing valve and variable valve, for connecting nitrogen pipeline; Wherein, the pipeline between variable valve and nozzles is detachable pipeline, and detachable pipeline at least comprises two segment pipes, between two segment pipes, connects by releasable connection part.
According to an aspect of the present invention, described detachable pipeline comprises: the first pipeline, is connected to variable valve; Second pipe, is connected to the first pipeline by the first flange; The 3rd pipeline, is connected to second pipe by the second flange, and wherein, nozzles are arranged on the end away from the second flange of the 3rd pipeline.
According to an aspect of the present invention, on the first pipeline between variable valve and the first flange, the reserved mouth of pipe is set, for connecting nitrogen pipeline.
According to an aspect of the present invention, adopt metal stone cotton pad to seal for connecting between the flange of two segment pipes.
According to the method for the cleaning tar of a kind of boiler coke oven gas pipe of the present invention, comprise the following steps: (a) keep the furnace pressure of boiler lower than barometric point; (b) close the quick-closing valve being arranged on pipe main body, and confirm that valve has closed the limit; (c) nitrogen pipeline be connected to quick-closing valve and be arranged on pipe main body and the reserved mouth of pipe between the variable valve of a side of the close nozzles of quick-closing valve, utilize nitrogen to purge the residual coal gas in the pipeline between quick-closing valve and nozzles, residual coal gas is purged clean; (d) close variable valve, and confirm that valve has closed the limit; (e) remove the detachable pipeline being connected between variable valve and nozzles, and clear up the tar of detachable pipeline and nozzles; (f) tar in cleaning variable valve.
According to an aspect of the present invention, described detachable pipeline comprises: the first pipeline, is connected to variable valve; Second pipe, is connected to the first pipeline by the first flange; The 3rd pipeline, is connected to second pipe by the second flange, and wherein, nozzles are arranged on the end away from the second flange of the 3rd pipeline, wherein, the second reserved mouth of pipe is set on the pipe main body between variable valve and the first flange, for connecting nitrogen pipeline.
According to an aspect of the present invention, between step (d) and step (e) or in step (c), also comprise the step that nitrogen pipeline is connected to the second reserved mouth of pipe and the residual coal gas in pipeline is purged.
According to an aspect of the present invention, after described detachable pipeline is cleared up tar and comprised and utilize the first flange and the second flange that second pipe is removed, respectively the first pipeline and variable valve, second pipe, the 3rd pipeline and nozzles are cleared up to tar.
According to an aspect of the present invention, in the process of the cleaning tar of described step (e) and step (f), if coke-oven gas leaks by quick-closing valve, by the first reserved mouth of pipe to the pipeline charged pressure between quick-closing valve and variable valve the nitrogen higher than gas pressure, with the side away from nozzles at quick-closing valve by gas partition, avoid coal gas to leak.
According to an aspect of the present invention, the method for the cleaning tar of described step (e) and step (f) is steaming out.
According to the present invention, can realize in not blowing out of boiler situation coke oven gas pipe and nozzles are cleared up to tar, maintain the maximum burning amount of boiler coke-oven gas, make full use of coke-oven gas.
Brief description of the drawings
By the detailed description of carrying out below in conjunction with accompanying drawing, above and other objects of the present invention, feature and advantage will become apparent, wherein:
Fig. 1 shows a kind of according to an exemplary embodiment of the present invention boiler coke oven gas pipe.
Main description of reference numerals:
1. pipe main body, 2. quick-closing valve, the 3. first reserved mouth of pipe, 4. variable valve, the 5. second reserved mouth of pipe, 6. the first pipeline, 7. the first flange, 8. second pipe, 9. the second flange, 10. the 3rd pipeline, 11. nozzles.
Embodiment
Hereinafter, exemplary embodiment of the present invention is described with reference to the accompanying drawings more fully.But they can be implemented with different forms, and should not be construed as the embodiment that is confined to set forth here.On the contrary, providing these embodiment to make the disclosure will be thoroughly with complete, and the scope of example embodiment will be conveyed to those skilled in the art fully.
Hereinafter, will describe according to a kind of boiler coke oven gas pipe of exemplary embodiment of the present invention.
Fig. 1 shows a kind of according to an exemplary embodiment of the present invention boiler coke oven gas pipe.With reference to Fig. 1, boiler coke oven gas pipe comprises according to an exemplary embodiment of the present invention: pipe main body 1; Nozzles 11, are positioned at one end of pipe main body 1; Quick-closing valve 2, is arranged on pipe main body 1, and quick-closing valve 2, for the coal gas of quick closedown or opening conduits main body 1, cuts out or turns on the gas-fire to the transmission of nozzles direction; Variable valve 4, is arranged on pipe main body 1, is positioned at a side of the close nozzles 11 of quick-closing valve 2, and variable valve 4, for slowly regulating the transmission of pipe main body 1 coal gas, is controlled the transmission quantity of coal gas, for example, turn the flow of coal gas down or tune up the flow of coal gas; The first reserved mouth of pipe 3 is set on the pipe main body 1 between quick-closing valve 2 and variable valve 4, for connecting nitrogen pipeline; Pipeline between variable valve 4 and nozzles 11 is detachable pipeline, and detachable pipeline at least comprises two segment pipes, between two segment pipes, connects by releasable connection part.
Although only show a quick-closing valve 2 and a variable valve 4 in Fig. 1, the invention is not restricted to this, multiple quick-closing valves and variable valve also can be set as required, be beneficial to control the coal gas transmission quantity in gas line.
Although the first reserved mouth of pipe 3 can be set on the pipe main body 1 between quick-closing valve 2 and variable valve 4, for being connected with nitrogen pipeline, but the invention is not restricted to this, also the pipeline between quick-closing valve 2 and variable valve 4 directly can be connected with nitrogen pipeline, and with quick-closing valve 2 and variable valve 4 between the nitrogen pipeline that is connected of pipeline on valve is set, control nitrogen in nitrogen pipeline to the conveying in the pipe main body 1 of coke-oven gas by valve.
According to one embodiment of present invention, releasable connection part can be flange, but the invention is not restricted to this, and other that also can be known to those skilled in the art can be used for connecting the releasable connection part of two segment pipes.
According to one embodiment of present invention, detachable pipeline can comprise three segment pipes, the first pipeline 6, second pipe 8, the 3rd pipeline 10, the first pipeline 6 is connected by the first flange 7 with second pipe 8, second pipe 8 is connected by the second flange 9 with the 3rd pipeline 10, can adopt metal stone cotton pad to seal for connecting between two flanges of two segment pipes, but the invention is not restricted to this, can also adopt other sealing method known to those skilled in the art, as adopted sizing flange clamp, injecting the sealing methods such as sealing agent.Wherein, second pipe 8 comprises and is set up all-in-one-piece two portions, can be angled between two portions, and preferably, the angle between two portions can be 90 °～135 °.
According to one embodiment of present invention, the second reserved mouth of pipe 5 can be set on the first pipeline 6 between variable valve 4 and the first flange 7, for connecting nitrogen pipeline.But the invention is not restricted to this, also the first pipeline 6 between variable valve 4 and the first flange 7 directly can be connected with nitrogen pipeline, and with variable valve 4 and the first flange 7 between the nitrogen pipeline that is connected of the first pipeline 6 on valve is set, control nitrogen in nitrogen pipeline to the conveying in the pipe main body 1 of coke-oven gas by valve.
Comprise the following steps according to the method for the cleaning tar of a kind of boiler coke oven gas pipe of exemplary embodiment of the present invention: (a) keep the furnace pressure of boiler lower than barometric point; (b) close the quick-closing valve being arranged on pipe main body, and confirm that valve has closed the limit; (c) nitrogen pipeline be connected to quick-closing valve and be arranged on pipe main body and the first reserved mouth of pipe between the variable valve of a side of the close nozzles of quick-closing valve, utilize nitrogen to purge the residual coal gas in the pipeline between quick-closing valve and nozzles, residual coal gas is purged clean; (d) close variable valve, and confirm that valve has closed the limit; (e) remove the detachable pipeline being connected between variable valve and nozzles, and clear up the tar of detachable pipeline and nozzles; (f) tar in cleaning variable valve.
In step (a), if boiler in running status, needs to keep the furnace pressure of boiler lower than barometric point, prevent that the flame in burner hearth from altering outward, cause potential safety hazard to cleaning tar.But, also can be applicable to boiler in blowing out state according to the method for the cleaning tar of a kind of boiler coke oven gas pipe of the present invention, now,, without keeping the furnace pressure of boiler lower than barometric point, directly carry out the step of step (b).
Then, close quick-closing valve 2, and confirm that valve has closed the limit, prevent that the coal gas in coke-oven gas arm from overflowing by quick-closing valve 2, cause gas leak.Then, nitrogen pipeline is connected to the reserved mouth of pipe 3 of first between quick-closing valve 2 and variable valve 4, the residual coal gas in the pipeline between quick-closing valve 2 and nozzles 11 is purged, by clean residual coal gas cleaning, and close variable valve 4, confirm that valve closes the limit.But the invention is not restricted to this, also nitrogen pipeline can be connected on the reserved mouth of pipe 5 of second between variable valve 4 and the first flange 7, and variable valve 4 is opened to maximum, utilize nitrogen to purge the residual coal gas in pipeline, by clean residual coal gas cleaning.Can also nitrogen pipeline be connected on the second reserved mouth of pipe 5 between the reserved mouth of pipe 3 of first between quick-closing valve 2 and variable valve 4 and variable valve 4 and the first flange 7 simultaneously, pipeline between quick-closing valve 2 and nozzles 11 is purged, by clean residual coal gas cleaning simultaneously.
Coal gas between by quick-closing valve 2 and nozzles 11 in pipeline is closed variable valve 4, and is confirmed that valve has closed the limit after purging totally.Then, can utilize the first flange 7 and the second flange 9 that second pipe 8 is removed, can remove the first pipeline 6 and the 3rd pipeline 10.After second pipe 8 is removed, the workman who is responsible for cleaning tar can stand between the first flange 7 and the second flange 9, then the instrument of utilization cleaning tar is cleared up according to this first pipeline 6, second pipe 8, the 3rd pipeline 10 and nozzles 11 and is cleared up tar, but also can be not limited to this according to the order of cleaning tar of the present invention, for example can first clear up the 3rd pipeline 10 and nozzles 11, and then cleaning second pipe 8, the first pipelines 6., can use steaming out, but the invention is not restricted to this when tar in cleaning, also can adopt method of other cleaning tar known to those skilled in the art, for example, can adopt the pipe that diameter is little compared with gas line diameter to insert in gas line, tar is scraped.According to exemplary embodiment of the present invention, second pipe 8 comprises and is set up all-in-one-piece two portions, can be angled between two portions, and preferably, the angle between two portions can be 90 °～135 °.In the time that the angle between two portions of second pipe 8 is 90 °～135 °, workman that can easy cleaning tar stands between the first flange 7 and the second flange 9, and cleaning tool is put into the operation that the first pipeline 6 and the 3rd pipeline 10 are cleared up tar.
Although according to exemplary embodiment of the present invention, can utilize the first flange 7 and the second flange 9 that second pipe 8 is removed, can remove the first pipeline 6 and the 3rd pipeline 10.But the invention is not restricted to this, also can remove successively nozzles 11, the second flanges 9 and the 3rd pipeline 10, the first flanges 7 and second pipe 8, and clear up the tar of the first pipeline 6, second pipe 8, the 3rd pipeline 10 and nozzles 11.
, note also that meanwhile, if carry out the cleaning of pitch coal feed channel in the situation that of boiler operatiopn,, in whole scale removal process, need to keep the furnace pressure of boiler lower than barometric point; In cleaning tar process, as find that there is the situation of gas leak, nitrogen pipeline is connected to the reserved mouth of pipe 3 of first between quick-closing valve 2 and variable valve 4, in gas line, pass into the nitrogen of pressure higher than gas pressure.Thus, utilize nitrogen pressure can make the side away from nozzles 11 of gas partition at quick-closing valve 2 higher than gas pressure, avoid coal gas to leak.
After having cleared up, variable valve 4, the first pipeline 6, the first flange 7, second pipe 8, the second flange 9, the 3rd pipeline 10 and nozzles 11 are installed by original position.
A kind of boiler coke oven gas pipe that exemplary embodiment according to the present invention provides and method for cleaning thereof are cleared up before and after tar the boiler of certain factory, and coke-oven gas burning amount is as shown in table 1.
Table 1
Known according to table 1, after a kind of boiler coke oven gas pipe that exemplary embodiment according to the present invention provides and method for cleaning thereof are cleared up boiler, coke-oven gas burning amount increases substantially.
According to a kind of boiler coke oven gas pipe of the present invention and method for cleaning thereof, suitable pipeline configuration and method for cleaning are selected, can realize in not blowing out of boiler situation coke oven gas pipe and nozzles are cleared up to tar, maintain the maximum burning amount of boiler coke-oven gas, make full use of coke-oven gas.
Although described some embodiments of the present invention with reference to the accompanying drawings, it should be appreciated by those skilled in the art that in the case of not departing from by claim and equivalent thereof and limit the principle of the present invention and spirit of its scope, can modify to these embodiment.
Claims (10)
1. a boiler coke oven gas pipe, comprising:
Pipe main body;
Nozzles, are positioned at one end of pipe main body;
Quick-closing valve, is arranged on pipe main body;
Variable valve, is arranged on pipe main body, is positioned at a side of the close nozzles of quick-closing valve;
Wherein, the first reserved mouth of pipe is set on the pipe main body between quick-closing valve and variable valve, for connecting nitrogen pipeline;
Wherein, the pipeline between variable valve and nozzles is detachable pipeline, and detachable pipeline at least comprises two segment pipes, between two segment pipes, connects by releasable connection part.
2. boiler coke oven gas pipe according to claim 1, is characterized in that, described detachable pipeline comprises:
The first pipeline, is connected to variable valve;
Second pipe, is connected to the first pipeline by the first flange;
The 3rd pipeline, is connected to second pipe by the second flange,
Wherein, nozzles are arranged on the end away from the second flange of the 3rd pipeline.
3. boiler coke oven gas pipe according to claim 2, is characterized in that, the second reserved mouth of pipe is set on the first pipeline between variable valve and the first flange, for connecting nitrogen pipeline.
4. boiler coke oven gas pipe according to claim 2, is characterized in that, adopts metal stone cotton pad to seal for connecting between the flange of two segment pipes.
5. a method for the cleaning tar of boiler coke oven gas pipe, is characterized in that, said method comprising the steps of:
(a) keep the furnace pressure of boiler lower than barometric point;
(b) close the quick-closing valve being arranged on pipe main body, and confirm that valve has closed the limit;
(c) nitrogen pipeline be connected to quick-closing valve and be arranged on pipe main body and the first reserved mouth of pipe between the variable valve of a side of the close nozzles of quick-closing valve, utilize nitrogen to purge the residual coal gas in the pipeline between quick-closing valve and nozzles, residual coal gas is purged clean;
(d) close variable valve, and confirm that valve has closed the limit;
(e) remove the detachable pipeline being connected between variable valve and nozzles, and clear up the tar of detachable pipeline and nozzles;
(f) tar in cleaning variable valve.
6. method as claimed in claim 5, is characterized in that, described detachable pipeline comprises:
The first pipeline, is connected to variable valve;
Second pipe, is connected to the first pipeline by the first flange;
The 3rd pipeline, is connected to second pipe by the second flange,
Wherein, nozzles are arranged on the end away from the second flange of the 3rd pipeline, wherein, the second reserved mouth of pipe are set on the pipe main body between variable valve and the first flange, for connecting nitrogen pipeline.
7. method according to claim 6, it is characterized in that, between step (d) and step (e) or in step (c), also comprise the step that nitrogen pipeline is connected to the second reserved mouth of pipe and the residual coal gas in pipeline is purged.
8. method according to claim 6, it is characterized in that, after described detachable pipeline is cleared up tar and comprised and utilize the first flange and the second flange that second pipe is removed, respectively the first pipeline and variable valve, second pipe, the 3rd pipeline and nozzles are cleared up to tar.
9. method according to claim 5, it is characterized in that, in the process of the cleaning tar of described step (e) and step (f), if coke-oven gas leaks by quick-closing valve, by the first reserved mouth of pipe to the pipeline charged pressure between quick-closing valve and variable valve the nitrogen higher than gas pressure, with the side away from nozzles at quick-closing valve by gas partition, avoid coal gas to leak.
10. method according to claim 5, is characterized in that, the method for the cleaning tar of described step (e) and step (f) is steaming out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212433.3A CN103980919B (en) | 2014-05-19 | 2014-05-19 | A kind of boiler coke oven gas pipe and method for cleaning thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410212433.3A CN103980919B (en) | 2014-05-19 | 2014-05-19 | A kind of boiler coke oven gas pipe and method for cleaning thereof |
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| CN103980919A true CN103980919A (en) | 2014-08-13 |
| CN103980919B CN103980919B (en) | 2016-05-25 |
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| CN105295963A (en) * | 2015-10-29 | 2016-02-03 | 山东钢铁股份有限公司 | Crude gas cleaning device for coke oven discharging pipe and control method thereof |
| CN108204524A (en) * | 2016-12-20 | 2018-06-26 | 上海船厂船舶有限公司 | Fuel gas pipeline and its method for maintaining |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103980919B (en) | 2016-05-25 |
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