CN102671328A - Spontaneous combustion solution for circular coal storages - water vapour storage method - Google Patents
Spontaneous combustion solution for circular coal storages - water vapour storage method Download PDFInfo
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- CN102671328A CN102671328A CN2011100653663A CN201110065366A CN102671328A CN 102671328 A CN102671328 A CN 102671328A CN 2011100653663 A CN2011100653663 A CN 2011100653663A CN 201110065366 A CN201110065366 A CN 201110065366A CN 102671328 A CN102671328 A CN 102671328A
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Abstract
The invention relates to a scheme and a storage method which can thoroughly solve the phenomenon of spontaneous combustion in circular coal storages, i.e. a spontaneous combustion solution for circular coal storages - a water vapour storage method. A pipeline is reasonably laid on the bottom of a coal storage to input water vapour into the coal storage, the water vapour then continuously seeps into the coal storage via water vapour discharge holes on the pipeline, so that the coal stored in the coal storage can be always covered in the water vapour, the input of the water vapour can ensure the that temperature of the stored coal cannot exceed 100 DEG C and that the moisture in the coal can be kept in a stable and balanced state for a long time, and consequently, the method solves the problems of constant temperature rise and moisture loss as the result of the oxidative decomposition of the coal stored for a long time, so that the phenomenon of spontaneous combustion cannot take place any more in the circular coal storage. The method is also applicable to the fields of coal storage, sulphur storage and the like in circular storages.
Description
Affiliated technical field:
The present invention relates to the novel storing mode of a kind of round coal yard---steam storing method, can thoroughly solve a kind of method of round coal yard generation spontaneous combustion.
Research is thought: the height of moisture in coal is the key factor that decision dump temperature rises.The balance of the evaporation latent heat of moisture in coal and the heat of oxidation of coal has determined the rising of dump temperature;, temperature rise tends to balance when reaching 80-90 ℃; High like moisture in coal, this balance can be kept the long period, and coal yard feeds steam; Just can guarantee to have in the coal adequate water, the dump temperature will can be in stable state for a long time.Therefore, can make the coal long-term storage and can spontaneous combustion.In addition, coal yard feeds steam, can make in the coal yard air capacity not enough, makes the coal oxidation of at all having no way of taking place.Slowly the steam that rises in addition utilizes the air duct effect, makes steam be penetrated into each corner of coal yard more easily.
The intensification problem, moisture content that steam storing method has solved the stock ground constantly scatter and disappear problem, make that rarefaction of air again dieseling can not take place in the stock ground, in addition, also make the air duct effect become advantage by unfavorable factor.
This method is applicable to long-term storing field, round stock ground---coal storage, sulphur etc.
Background technology:
Circular coal yard can't be accomplished to stack earlier earlier to take out because the dump piling height is higher, and displacement regularly is difficult to also realize that therefore, dieseling is serious that this is the common problem that exists at present.
In order to prevent self-ignition of coal pile, require usually at present to take major measure following:
1, in the territory, Coal Storage Area, should remove all fire-hazardous flammable foreign material, like the rag of wood chip, paper, malthoid, oil-impregnated and ignition control compound etc.
2, should be dry and firm ground arranged in coal yard ground, should not store up slag, dry coal powder or other porous masses, and terrace should have certain slope, is beneficial to draining.
3, because of air is to get into the coal seam from dump bottom and to cocycle, should make the air can free flow on dump, the heat that is beneficial to oxidation of coal is generated is prone to scatter and disappear, but preferably with the dump compaction in layers, air can not be circulated.
4, the taper dump is easy to spontaneous combustion, and because of bigger coal cinder often drops on cone outside on every side, this is just for the middle part coal dust provides " air duct effect ", and moulded coal field, garden should not be store coal for a long time.
At present, solving moulded coal field, garden from burning method is: compaction in layers, displacement regularly; Processing is from burning method: the mechanical removal method.
Summary of the invention:
In order thoroughly to solve round coal yard spontaneous combustion problem, make coal can long-term stability deposit and dieseling no longer takes place, steam storing method is proposed.
Logical steam makes the coal yard environment facies to keeping stable in the coal yard.Solve at one stroke the constantly lost problem of coal yard intensification, moisture content, simultaneously, made rarefaction of air in the coal yard, no longer possessed autoignition conditions.In addition, make the air duct effect become advantage by unfavorable factor.Drop into steam, spontaneous combustion will can not take place in coal yard, and the spontaneous combustion problem is solved.
Specification is told figure: (nothing)
The specific embodiment:
This programme intend to adopt introduces coal yard with the Power Plant afterheat steam, the reasonable tubing in the coal yard bottom, again through exhaust hole on the pipeline continuously to coal yard water leaking-in steam, make coal yard deposit coal and shroud among water vapour all the time.Make it no longer possess autoignition conditions, spontaneous combustion just takes place in coal never at all.
The selection in vapour source:
Get into coal yard tail end steam and satisfy following the requirement:
Temperature:＜200 ℃
Pressure (adjustable): 1.5-5Kg/mm
2
Pipeline: system's main line is recommended to adopt the DN80 steel pipe, carries out corrosion-resistant thermal insulation and handles.
The coal yard bye-pass is recommended to adopt the DN40 steel pipe, carries out preservative treatment.For preventing that the bye-pass pore from stopping up, pipeline is arranged in the pipe trench after twining with gauze, covers with rubble; Bye-pass can go in ring and radial arrangement.
Claims (3)
1. the present invention relates to the novel storing mode of a kind of round coal yard---steam storing method, can thoroughly solve a kind of method of round coal yard generation spontaneous combustion.
The present invention introduces round bedding plant with water vapour through pipeline, the reasonable tubing in bedding plant bottom, again through exhaust hole on the pipeline continuously to coal yard water leaking-in steam, make coal yard deposit coal and shroud among water vapour all the time.Make it no longer possess autoignition conditions, spontaneous combustion just takes place in coal never at all.
2. according to the said method of claim 1, principal character is: water vapour is introduced round bedding plant, material is deposited among water vapour.
3. this method is applicable to fields such as round stock ground coal storage, sulphur, is mainly used in units such as power plant, chemical plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100653663A CN102671328A (en) | 2011-03-14 | 2011-03-14 | Spontaneous combustion solution for circular coal storages - water vapour storage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100653663A CN102671328A (en) | 2011-03-14 | 2011-03-14 | Spontaneous combustion solution for circular coal storages - water vapour storage method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102671328A true CN102671328A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100653663A Pending CN102671328A (en) | 2011-03-14 | 2011-03-14 | Spontaneous combustion solution for circular coal storages - water vapour storage method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057889A (en) * | 2013-01-04 | 2013-04-24 | 广东电网公司电力科学研究院 | Device and method for inhibiting spontaneous combustion of open-air coal piles |
| CN103111030A (en) * | 2013-01-05 | 2013-05-22 | 神华集团有限责任公司 | System and method for preventing coal spontaneous combustion or extinguishing coal spontaneous combustion |
| CN105031851A (en) * | 2015-09-06 | 2015-11-11 | 泰富国际工程有限公司 | Fire suppression device and fire suppression method for bulk material storage yard |
| CN105536174A (en) * | 2016-01-29 | 2016-05-04 | 深圳东信环能科技有限公司 | Method for preventing spontaneous combustion of coal in strip-shaped coal storage yard and application of method |
| CN105561500A (en) * | 2016-01-29 | 2016-05-11 | 深圳东信环能科技有限公司 | Method for preventing coal of round coal storage yard from spontaneously combusting and application of method |
Citations (3)
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|---|---|---|---|---|
| JPS5641187A (en) * | 1979-09-10 | 1981-04-17 | Sumitomo Heavy Industries | Method and device for prementing spontaneous combustion of coal in coal storage tank |
| JPS58188237A (en) * | 1982-04-27 | 1983-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Preventive method of spontaneous ignition in storage of coal |
| CN101972528A (en) * | 2010-09-28 | 2011-02-16 | 中国神华能源股份有限公司 | Method for preventing spontaneous combustion of stored coal piles by covering coal piles by utilizing oxygen-insulating materials |
-
2011
- 2011-03-14 CN CN2011100653663A patent/CN102671328A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641187A (en) * | 1979-09-10 | 1981-04-17 | Sumitomo Heavy Industries | Method and device for prementing spontaneous combustion of coal in coal storage tank |
| JPS58188237A (en) * | 1982-04-27 | 1983-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Preventive method of spontaneous ignition in storage of coal |
| CN101972528A (en) * | 2010-09-28 | 2011-02-16 | 中国神华能源股份有限公司 | Method for preventing spontaneous combustion of stored coal piles by covering coal piles by utilizing oxygen-insulating materials |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057889A (en) * | 2013-01-04 | 2013-04-24 | 广东电网公司电力科学研究院 | Device and method for inhibiting spontaneous combustion of open-air coal piles |
| CN103057889B (en) * | 2013-01-04 | 2014-12-10 | 广东电网公司电力科学研究院 | Device and method for inhibiting spontaneous combustion of open-air coal piles |
| CN103111030A (en) * | 2013-01-05 | 2013-05-22 | 神华集团有限责任公司 | System and method for preventing coal spontaneous combustion or extinguishing coal spontaneous combustion |
| CN105031851A (en) * | 2015-09-06 | 2015-11-11 | 泰富国际工程有限公司 | Fire suppression device and fire suppression method for bulk material storage yard |
| CN105031851B (en) * | 2015-09-06 | 2018-11-27 | 泰富国际工程有限公司 | A kind of bulk cargo stockyard fire inhibits device and fire suppressing method |
| CN105536174A (en) * | 2016-01-29 | 2016-05-04 | 深圳东信环能科技有限公司 | Method for preventing spontaneous combustion of coal in strip-shaped coal storage yard and application of method |
| CN105561500A (en) * | 2016-01-29 | 2016-05-11 | 深圳东信环能科技有限公司 | Method for preventing coal of round coal storage yard from spontaneously combusting and application of method |
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Application publication date: 20120919 |