CN110514002A - The cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device - Google Patents
The cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device Download PDFInfo
- Publication number
- CN110514002A CN110514002A CN201910940942.0A CN201910940942A CN110514002A CN 110514002 A CN110514002 A CN 110514002A CN 201910940942 A CN201910940942 A CN 201910940942A CN 110514002 A CN110514002 A CN 110514002A
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- China
- Prior art keywords
- steam
- cooling
- kiln
- curtain wall
- calcined
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- 238000001816 cooling Methods 0.000 title claims abstract description 60
- 239000011331 needle coke Substances 0.000 title claims abstract description 24
- 241001640558 Cotoneaster horizontalis Species 0.000 claims abstract description 15
- 239000011329 calcined coke Substances 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000001354 calcination Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/06—Rotary-drum furnaces, i.e. horizontal or slightly inclined adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention belongs to the calcining technology fields of carbon industry, more particularly, to a kind of needle coke calcined by rotary kiln cooling kiln steam extinguishing and cooling device, including cooling kiln, the feeding chute being connected with this cooling kiln, it is characterized in that introducing steam lead in the cooling kiln calcined coke upstream end right middle, on this steam lead and after on the inside of feed inlet 1 meter, a steam curtain wall spray head is provided with every L meters, several steam curtain wall spray heads form steam curtain wall.The present invention realized using rotary kiln tail waste heat boiler residual steam as the quick medium for extinguishing cooling, avoid and overcome the problems, such as more than, while can reduce water consumption, reduce power consumption, reduce cost of investment, and achieve the purpose that raising product quality.
Description
Technical field
The invention belongs to the calcining technology fields of carbon industry, more particularly, to a kind of cooling kiln of needle coke calcined by rotary kiln
With steam extinguishing and cooling device.
Background technique
Needle coke be using the catalytic slurry in coal tar asphalt or petroleum refining process as raw material, it is preprocessed to be refined
Needle coke prepared by delayed coking, calcining is carried out afterwards.Its appearance is silver gray, there is metallic luster, and structural porous has bright
Aobvious flowing texture has threadiness or acicular texture trend, and needle coke is with thermal expansion coefficient is low, impurity content is low, conductive effect
The advantages that rate is high and is easily graphitized, mainly for the production of high power (HP) and ultra high power (VHP) graphite electrode.Currently, needle-shaped
Coke is also widely used in lithium battery industry, and negative electrode material obtained has the characteristics that specific capacity height, long service life, safe,
It is one of indispensable raw material of new energy field.
Needle coke production technology is mainly by three part groups such as feed material preparation units, delayed coking unit, calcining units
At.Calcining unit is last one of important procedure in entire production needle coke technique, and main purpose is: will be in Raw needle coke
Moisture, volatile matter discharge, improve physicochemical property, density, mechanical strength and electric conductivity and chemical stability.Production process
It is that green coke is started dehydration under 600 DEG C -800 DEG C of kiln temperature, volatile matter is precipitated from rotary kiln continuous feed.Object
Material travels forward with the rotation of rotary kiln, and temperature gradually rises, and into high-temperature region, carries out high-temperature calcination, temperature can reach
1300 DEG C -1500 DEG C or so, starts to be cooled to 600 DEG C -800 DEG C after Secondary Air, then enter cooling kiln from kiln hood feed opening.
Currently, cooling kiln cooling technique uses water spray at feed inlet to extinguish cooling down substantially, with the rotation of cooling kiln
Material travels forward, and cooling kiln outer wall is cooled down indirectly using water spray, keeps the material in kiln gradually cold while travelling forward
But.Calcined coke enters at 600 DEG C -800 DEG C after cooling kiln directly to be sprayed with water, is carried out directly extinguishing cooling, is made the cooling of coke
Temperature gradient is big, shrinks unevenly, can generate embrittlement and the change of microstructure.And water meeting after touching high temperature calcined coke
Flash evapn, after evaporation, the impurity such as calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride for containing in hydrone have remained in calcined coke
Gap in, certain influence can be brought to the electric conductivity and mechanical strength of calcined coke, chemical stability in this way, is caused primary
Mass defect.
Summary of the invention
Extinguish the object of the present invention is to provide a kind of using steam rotary kiln kiln tail waste heat boiler residual steam as quick
The medium of cooling carries out extinguishing and cooling device to the cooling kiln of needle coke calcined by rotary kiln.
The purpose of the present invention is what is realized by following technical proposals:
The cooling kiln of needle coke calcined by rotary kiln of the invention is extinguished with steam and cooling device, including cooling kiln, cools down kiln with this
The feeding chute being connected, it is characterised in that introduce steam lead, In in the cooling kiln calcined coke upstream end right middle
On this steam lead and after 1 meter on the inside of feed inlet, a steam curtain wall spray head, several steam curtain walls are provided with every L meters
Spray head forms steam curtain wall.
The L rice is 0.4-0.6 meters.
The one steam curtain wall spray head length is 0.7-0.9 meters.
The steam curtain wall spray head number is 4-6.
The steam pressure of the steam curtain wall be 2-4 kilograms of pressure, 120 DEG C -140 DEG C of vapor (steam) temperature.
Advantages of the present invention:
The cooling kiln of needle coke calcined by rotary kiln of the invention is extinguished with steam and cooling device, mainly uses more than rotary kiln
Heat boiler residual steam realizes as the quick medium for extinguishing cooling, avoid and overcome the problems, such as more than, while use can be saved
Water reduces power consumption, reduces cost of investment, and achievees the purpose that improve product quality.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
A specific embodiment of the invention is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, the cooling kiln of needle coke calcined by rotary kiln of the invention is extinguished with steam and cooling device, including cooling
Kiln 3, the feeding chute 1 being connected with this cooling kiln 3, it is characterised in that in the 3 calcined coke upstream end intermediate right of cooling kiln
It introduces steam lead 2 and is provided with a steam curtain every L meters on this steam lead 2 and after on the inside of feed inlet 1 meter in side
Wall spray head 5, several steam curtain wall spray heads 5 form steam curtain wall.
The L rice is 0.4-0.6 meters.
One 5 length of steam curtain wall spray head is 0.7-0.9 meters.
The number of steam curtain wall spray head 5 is 4-6.
6 pressure of steam of the steam curtain wall is 2-4 kilograms of pressure, 120 DEG C -140 DEG C of 6 temperature of steam.
Needle coke calcined by rotary kiln of the invention cooling kiln steam extinguishes and cooling device, calcined coke pass through rotary kiln
Enter cooling rotary kiln 3 at head feed opening, temperature of charge is at 600 DEG C -800 DEG C or so.Steam lead 2 cooling kiln calcined coke into
Enter right middle is held to introduce.The length in cooling kiln of steam lead 2 is 3 meters, after 1 meter on the inside of feed inlet, every 0.4-0.6 meters
One long 0.7-0.9 meters of steam curtain wall spray head 5 is installed, it, in this way can be in cooling kiln 3 using 4-6 steam curtain wall spray head 5 is amounted to
Interior formation is about 2.6 meters, the wide about 1.4 meters steam curtain walls high down toward material interface.6 pressure of steam is 2-4 kilograms of pressure, steam
6 120 DEG C -140 DEG C of temperature.Steam curtain wall can good air-isolation, the air-breathing object for avoiding cooling 3 negative pressure of kiln from introducing
Material, when steam touches needle coke 4 surface of the bed of material, hydrone will not enter inside material, and mainly 4 temperature of the needle coke bed of material is high
In vapor (steam) temperature, when steam touches the needle coke bed of material 4, secondary overheat can be generated in sensible heat, heat is taken away, 6 meeting of steam
Negative pressure caused by air-introduced machine with cooling kiln 3 is sent out outside cooling kiln 3.
The cooling kiln of needle coke calcined by rotary kiln of the invention is extinguished with steam and cooling device, mainly uses rotary kiln
Tail waste heat boiler residual steam 6 realizes as the quick medium for extinguishing cooling, avoid and overcome the problems, such as more than, while can save
About water consumption, reduction power consumption, reduction cost of investment, and achieve the purpose that improve product quality.
Claims (5)
1. a kind of cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device, including cooling kiln, kiln phase is cooled down with this
The feeding chute of connection, it is characterised in that introduce steam lead in the cooling kiln calcined coke upstream end right middle, herein
On steam lead and after 1 meter on the inside of feed inlet, a steam curtain wall spray head, several steam curtain wall sprays are provided with every L meters
Capitiform is at steam curtain wall.
2. needle coke calcined by rotary kiln according to claim 1 cooling kiln steam extinguishes and cooling device, feature exist
In the L rice be 0.4-0.6 meters.
3. needle coke calcined by rotary kiln according to claim 1 cooling kiln steam extinguishes and cooling device, feature exist
In a steam curtain wall spray head length be 0.7-0.9 meters.
4. needle coke calcined by rotary kiln according to claim 1 cooling kiln steam extinguishes and cooling device, feature exist
It is a for 4-6 in the steam curtain wall spray head number.
5. needle coke calcined by rotary kiln according to claim 1 cooling kiln steam extinguishes and cooling device, feature exist
In the steam curtain wall steam pressure be 2-4 kilograms of pressure, 120 DEG C -140 DEG C of vapor (steam) temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940942.0A CN110514002A (en) | 2019-09-30 | 2019-09-30 | The cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940942.0A CN110514002A (en) | 2019-09-30 | 2019-09-30 | The cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110514002A true CN110514002A (en) | 2019-11-29 |
Family
ID=68633105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910940942.0A Pending CN110514002A (en) | 2019-09-30 | 2019-09-30 | The cooling kiln of needle coke calcined by rotary kiln is extinguished with steam and cooling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110514002A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377385A (en) * | 2007-08-31 | 2009-03-04 | 沈阳铝镁设计研究院 | Method and apparatus for processing and cooling petroleum coke calcined by rotary kiln |
| CN102838999A (en) * | 2012-08-16 | 2012-12-26 | 圣火科技(河南)有限责任公司 | Low moisture coke cooling and waste heat utilizing device |
| CN107760325A (en) * | 2017-12-01 | 2018-03-06 | 中冶焦耐(大连)工程技术有限公司 | The steam cooling structure and method of a kind of gas retort discharging device for coke |
| CN210663854U (en) * | 2019-09-30 | 2020-06-02 | 鞍山兴德工程技术有限公司 | Steam extinguishing and cooling device for needle coke rotary kiln calcining and cooling kiln |
-
2019
- 2019-09-30 CN CN201910940942.0A patent/CN110514002A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377385A (en) * | 2007-08-31 | 2009-03-04 | 沈阳铝镁设计研究院 | Method and apparatus for processing and cooling petroleum coke calcined by rotary kiln |
| CN102838999A (en) * | 2012-08-16 | 2012-12-26 | 圣火科技(河南)有限责任公司 | Low moisture coke cooling and waste heat utilizing device |
| CN107760325A (en) * | 2017-12-01 | 2018-03-06 | 中冶焦耐(大连)工程技术有限公司 | The steam cooling structure and method of a kind of gas retort discharging device for coke |
| CN210663854U (en) * | 2019-09-30 | 2020-06-02 | 鞍山兴德工程技术有限公司 | Steam extinguishing and cooling device for needle coke rotary kiln calcining and cooling kiln |
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