CN102828010B - Safety relief method of tar of bell-type furnace - Google Patents
Safety relief method of tar of bell-type furnace Download PDFInfo
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- CN102828010B CN102828010B CN 201210367001 CN201210367001A CN102828010B CN 102828010 B CN102828010 B CN 102828010B CN 201210367001 CN201210367001 CN 201210367001 CN 201210367001 A CN201210367001 A CN 201210367001A CN 102828010 B CN102828010 B CN 102828010B
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Abstract
The invention relates to a safety relief method of the tar of a bell-type furnace. Two valves are arranged on a hydrogen pipeline releasing tar for controlling and tar is safely discharged from the hydrogen pipeline by controlling the opening sequence. The method has the following advantages that the tar of the bell-type furnace can be safely released, the safety of the working personnel can be ensured, the blowing hydrogen flow can be increased, the surface quality of steel plates can be improved and the rejection rate can be reduced.
Description
Technical field
The present invention relates to cold rolling field, relate in particular to a kind of method of safe release bell furnace tar.
Background technology
Be used for the hydrogen of annealing medium in Angang Cold Rolled Strip Plant 1# line bell furnace production process by the hydrogen burner combustion on heating mantles, reach energy-conservation and the environmental protection purpose.It is many more than 20 times that the annealed sheet steel Oil residue on surface cleans rear steel plate, therefore the tar content that in annealing process, the emulsion volatilization produces is larger, part deposits in hydrogen gas lines, must every stove discharge the tar in hydrogen gas lines after hanging heating mantles, otherwise tar will stop up hydrogen gas lines, cause that to blow the hydrogen flow low, and the tar that starts the cooling rear accumulation of shunting is sprayed onto surface of steel plate, produce the waste product of the defectives such as black-tape, emulsion residual and corrosion, have a strong impact on the surface quality of the rear steel plate of annealing.Simultaneously, the hydrogen of high temperature is also discharged simultaneously when the put-focus oil of Artificial Release, very easily produces blast, serious threat personnel safety.Therefore must adopt new method safety to discharge tar.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this invention is to provide a kind of method of safe release bell furnace tar, but safe release bell furnace tar guarantees staff's safety, improves plate surface quality.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of method of safe release bell furnace tar comprises the following steps:
1) 200-250mm sets up manually-operated gate two in the place above the manually-operated gate one on the hydrogen gas lines that discharges tar;
2) when discharging tar, first opened manually-operated gate two 1-2 minutes, below valve closes, tar emission is in the pipeline between valve one and valve two; Valve-off two again, contain tar in the pipeline between valve one and valve two at this moment, there is no hydrogen or a small amount of hydrogen;
3) in the situation that valve two is closed, first valve one is opened 1/4-1/3, this moment occurs 3 kinds of situations:
A has tar to flow out, and valve one is opened gradually fully and is put clean tar;
B has gas, closes gradually to close after minor valve one was exitted 5 seconds to open gradually discharging tar until put clean again;
C also without gas, shows that hydrogen gas lines stops up without tar, and at this moment valve-off one, repeating step 2 after clear hydrogen gas lines thoroughly) and step 3) discharge.
Compared with prior art, the invention has the beneficial effects as follows:
But safe release bell furnace tar guarantees staff's safety, improves and blows the hydrogen flow, strengthens plate surface quality, the rate of reducing the number of rejects and seconds.
Description of drawings
Fig. 1 is pipeline schematic diagram of the present invention.
In figure: 1-valve one 2-valve two 3-hydrogen gas lines.
Embodiment
Below in conjunction with Figure of description, the present invention is described in detail, but should be noted that enforcement of the present invention is not limited to following embodiment.
The method of safe release bell furnace tar comprises the following steps:
1) 200-250mm sets up manually-operated gate two in the place above the manually-operated gate one on the hydrogen gas lines that discharges tar;
2) when discharging tar, first opened manually-operated gate two 1-2 minutes, below valve closes, tar emission is in the pipeline between valve one and valve two.Valve-off two again, contain tar in the pipeline between valve one and valve two at this moment, there is no hydrogen or a small amount of hydrogen;
3) in the situation that valve two is closed, first valve one is opened 1/4-1/3, this moment occurs 3 kinds of situations:
A has tar to flow out, and valve one is opened gradually fully and is put clean tar;
B has gas, closes gradually to close after minor valve one was exitted 5 seconds to open gradually discharging tar until put clean again;
C also without gas, shows that hydrogen gas lines stops up without tar, and at this moment valve-off one, repeating step 2 after clear hydrogen gas lines thoroughly) and step 3) discharge.
But the present invention's safe release bell furnace tar guarantees staff's safety, improves and blows the hydrogen flow, strengthens plate surface quality, the rate of reducing the number of rejects and seconds.
Claims (1)
1. the method for a safe release bell furnace tar, is characterized in that, comprises the following steps:
1) 200-250mm sets up manually-operated gate two in the place above the manually-operated gate one on the hydrogen gas lines that discharges tar;
2) when discharging tar, first opened manually-operated gate two 1-2 minutes, manually-operated gate one is closed, and tar emission is in the pipeline between valve one and valve two; Valve-off two again, make in the pipeline between valve one and valve two to be full of tar, there is no hydrogen or a small amount of hydrogen;
3) in the situation that valve two is closed, first valve one is opened 1/4-1/3, this moment occurs 3 kinds of situations:
A has tar to flow out, and valve one is opened gradually fully and is put clean tar;
B has gas, closes gradually to close after minor valve one was exitted 5 seconds to open gradually discharging tar until put clean again;
C also without gas, shows that hydrogen gas lines stops up without tar, and at this moment valve-off one, repeating step 2 after clear hydrogen gas lines thoroughly) and step 3) discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210367001 CN102828010B (en) | 2012-09-27 | 2012-09-27 | Safety relief method of tar of bell-type furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210367001 CN102828010B (en) | 2012-09-27 | 2012-09-27 | Safety relief method of tar of bell-type furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828010A CN102828010A (en) | 2012-12-19 |
| CN102828010B true CN102828010B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210367001 Active CN102828010B (en) | 2012-09-27 | 2012-09-27 | Safety relief method of tar of bell-type furnace |
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| CN (1) | CN102828010B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625730Y (en) * | 2003-06-17 | 2004-07-14 | 江阴市锅炉容器厂 | Detachable full-automatic coke oven crude gas combustion unit having pretreating function |
| JP2005220390A (en) * | 2004-02-04 | 2005-08-18 | Nachi Fujikoshi Corp | Vacuum carburizing method and vacuum carburizing device |
| PL210958B1 (en) * | 2007-04-02 | 2012-03-30 | Seco Warwick Społka Akcyjna | The manner and control-metering system for active control of the surface of charge in the process of carbonizing under negative pressure |
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- 2012-09-27 CN CN 201210367001 patent/CN102828010B/en active Active
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| Publication number | Publication date |
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| CN102828010A (en) | 2012-12-19 |
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