CN101581213A - Method for extinguishing underground gasification furnace with steam - Google Patents
Method for extinguishing underground gasification furnace with steam Download PDFInfo
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- CN101581213A CN101581213A CNA2009100155425A CN200910015542A CN101581213A CN 101581213 A CN101581213 A CN 101581213A CN A2009100155425 A CNA2009100155425 A CN A2009100155425A CN 200910015542 A CN200910015542 A CN 200910015542A CN 101581213 A CN101581213 A CN 101581213A
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- steam
- furnace
- extinguishing
- gasification furnace
- gasification
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Abstract
The invention discloses a method for extinguishing an underground gasification furnace with steam, which comprises the following steps: arranging a steaming device and a steam pipeline above ground, wherein the steam pipeline is connected with the prior blasting pipeline; and charging steam into the gasification furnace through an air inlet passage, wherein the steam is further gasified when meeting high temperature in the furnace so as to break off oxygen in the gasification furnace to perform fire-extinguishing, absorbs heat and reduces the temperature in the continuous charging process to replace out the heat in the furnace, and is discharged out of the ground surface through an exhaust passage and is cooled to achieve the aim of extinguishing the furnace quickly, safely and thoroughly. The method for extinguishing the furnace achieves the aims of extinguishing the furnace thoroughly and quickly and not being threatened by dankness.
Description
Technical field
The present invention relates to coal underground gasification technology.
Background technology
Underground coal gasification(UCG) is with being in underground coal the burning of control to be arranged, the process that produces fuel gas by heat effect and chemical action to coal, coal underground gasification technology is a kind of safety, environmental protection, economic coal mining new method, the mine that is particularly useful for being difficult to below the km exploiting, scraps unworkable mine.The underground gasification station that China builds up moves for many years.The key technology of underground gasification is to set up underground gasification furnace, and underground gasification furnace is made up of inlet channel, exhaust passage, gasification tunnel and gasification coal seam.By from inlet channel manual firing and air blast in stove, along with constantly carrying out of burning, the fire district is to the steam vent side shifting, and whole coal seam is fallen in gasification, and the coal gas that coal seam gasification produces is transported to ground from the exhaust passage, after purifying as fuel and industrial chemicals.
When the gasification coal seam is about to after-flame can not normal gas producing the time, the coal column residual fire that still exists in the stove around residual coal, the stove, between the stove, it is complete to influence whole mine, so the stove that in time goes out of must taking measures.
Traditional stove method of going out has disconnected oxygen oven process and the water filling oven process that goes out that goes out.The disconnected oxygen oven process that goes out is to stop air feed in gasification furnace, closes access way, breaks off oxygen in the stove, and the disconnected oxygen of residual fire is extinguished.But, be easy to cause surplus temperature resume combustion because the furnace temperature reduction is slower.The water filling oven process that goes out is water filling in gasification furnace, the cooling fire extinguishing.But, there be certain threat in mine safety because gasification furnace inside ceiling panel and tomography have transmissibility.
Therefore be sought after a kind of safety stove method of going out completely.
Summary of the invention
The objective of the invention is to propose a kind of method for extinguishing underground gasification furnace with steam completely fast and safely.
For reaching above-mentioned purpose, technical scheme of the present invention is: at ground configuration steaming plant and steam pipeline, steam pipeline is connected on the former blowing line, charge into steam by inlet channel in gasification furnace, steam is met the further gasification reaction of furnace high-temperature, puts out a fire thereby break off the interior oxygen of gasification furnace, constantly charging into absorbing and cooling temperature in the process, furnace heat is cemented out, discharge ground from the exhaust passage and lower the temperature, reach the purpose of the stove that fast and safely thoroughly goes out.
Good effect of the present invention is: because steam does not burn not combustion-supporting, can reach the purpose of disconnected oxygen, and after-heat cements out in constantly charging in the process stove, reach the following temperature of burning-point, make no longer resume combustion of residual coal in the stove, realize thoroughly going out fast stove, and can not be subjected to permeable threat.
The specific embodiment
During enforcement, at the ground configuration steaming plant, or utilize original vapour source, steam pipeline is connected with former blowing line, and leads to each aperture of former inlet channel, charge into the disconnected oxygen of the steam stove that goes out continuously in stove, in filling the vapour process, steam flow is controlled at 200m
3/ h gradually reduces the number of inflating the aperture, when outlet temperature is reduced to below 90 ℃, illustrates that temperature has been reduced to below the burning-point in the gasification furnace, and water gas reaction no longer takes place, and the stove success of going out is described.
Claims (1)
1, a kind of method for extinguishing underground gasification furnace with steam, it is characterized in that, it is at ground configuration steaming plant and steam pipeline, and steam pipeline is connected on the former blowing line, charges into steam by inlet channel in gasification furnace, steam is met the further gasification reaction of furnace high-temperature, put out a fire thereby break off the interior oxygen of gasification furnace,, furnace heat is cemented out constantly charging into absorbing and cooling temperature in the process, discharge ground from the exhaust passage and lower the temperature, reach the purpose of the stove that fast and safely thoroughly goes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100155425A CN101581213A (en) | 2009-05-15 | 2009-05-15 | Method for extinguishing underground gasification furnace with steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100155425A CN101581213A (en) | 2009-05-15 | 2009-05-15 | Method for extinguishing underground gasification furnace with steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101581213A true CN101581213A (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100155425A Pending CN101581213A (en) | 2009-05-15 | 2009-05-15 | Method for extinguishing underground gasification furnace with steam |
Country Status (1)
| Country | Link |
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| CN (1) | CN101581213A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587883A (en) * | 2011-11-29 | 2012-07-18 | 新奥气化采煤有限公司 | Method for quenching underground coal gasifier |
| CN106522914A (en) * | 2016-11-18 | 2017-03-22 | 中为（上海）化学有限公司 | Underground gasifier quenching and burnt-out area restoration treatment method for coal underground gasification process |
-
2009
- 2009-05-15 CN CNA2009100155425A patent/CN101581213A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587883A (en) * | 2011-11-29 | 2012-07-18 | 新奥气化采煤有限公司 | Method for quenching underground coal gasifier |
| CN102587883B (en) * | 2011-11-29 | 2015-01-07 | 新奥气化采煤有限公司 | Method for quenching underground coal gasifier |
| CN106522914A (en) * | 2016-11-18 | 2017-03-22 | 中为（上海）化学有限公司 | Underground gasifier quenching and burnt-out area restoration treatment method for coal underground gasification process |
| CN106522914B (en) * | 2016-11-18 | 2019-02-12 | 中为（上海）化学有限公司 | Underground gasification furnace parking and burned out area restoration processing method for coal underground gasifying technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091118 |