CN109082301A - A kind of production technology and its process units of negative electrode material coke - Google Patents
A kind of production technology and its process units of negative electrode material coke Download PDFInfo
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- CN109082301A CN109082301A CN201811039657.3A CN201811039657A CN109082301A CN 109082301 A CN109082301 A CN 109082301A CN 201811039657 A CN201811039657 A CN 201811039657A CN 109082301 A CN109082301 A CN 109082301A
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- China
- Prior art keywords
- coking
- heavy oil
- negative electrode
- electrode material
- graphite powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007773 negative electrode material Substances 0.000 title claims abstract description 45
- 239000000571 coke Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title abstract description 9
- 238000004939 coking Methods 0.000 claims abstract description 96
- 239000000295 fuel oil Substances 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 230000003111 delayed effect Effects 0.000 claims abstract description 20
- 238000005194 fractionation Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 11
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000003208 petroleum Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 13
- 239000003034 coal gas Substances 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000011301 petroleum pitch Substances 0.000 claims description 4
- 238000005235 decoking Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims 1
- 239000011295 pitch Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 229910021383 artificial graphite Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000011331 needle coke Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002006 petroleum coke Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 239000002931 mesocarbon microbead Substances 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G55/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process
- C10G55/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Coke Industry (AREA)
Abstract
A kind of production technology of negative electrode material coke, is to add high purity graphite powder in delayed coking miscella, obtains negative electrode material coke through coking, the device of use includes coking tower, heating furnace, fractionating column；It further include heavy oil pans, the heavy oil entrance of the heavy oil pans is connected with the heavy oil of fractionating column extraction mouth, the material outlet of heavy oil pans connects an entrance of fractionation column base by pipeline with petroleum pump, the heavy oil pans are equipped with tank heater and blender, and graphite powder feed inlet is additionally provided on heavy oil pans.The present invention adds high purity graphite powder, and using low quinoline insolubles, the raw material of low ash, ensures the purity of negative electrode material coke.Carry out feed change Coking Process by adjusting the ratio of high purity graphite powder, changes the microstructure of negative electrode material coke, meet different type negative electrode material production requirement.It is improved on the basis of existing maturing appts, it can be achieved that negative electrode material coke continuous production, high production efficiency.
Description
Technical field
The present invention relates to the production technologies and its production dress of negative electrode material production field more particularly to a kind of negative electrode material coke
It sets.
Background technique
Lithium ion battery have high-energy-density, have extended cycle life, memory-less effect many advantages, such as, with each electron-like produce
The fast development of product, and country encourage the policy of new-energy automobile industry, and lithium ion battery industry will continue in future
High speed development brings bigger opportunity for negative electrode material industry, but higher requirements are also raised simultaneously.
Negative electrode material is to determine one of the key factor of performance of lithium ion battery, and leading negative electrode material market is main at present
It is carbon cathode material, mainly there is natural graphite, mesocarbon microspheres (MCMB), needle coke, petroleum coke, metallurgical coke etc..Natural stone
Black particle surface reactivity is uneven, and crystallite size is larger, and crystal structure is more easily damaged in charge and discharge process, there is first week effect
The disadvantages of rate is low, high rate performance is bad can substantially meet consumer electronics production by technical treatments such as cladding, surface modifications
Requirement of the product to compact battery performance.MCMB grain surface texture is uniform graphite-structure edge, and reactivity is uniform, has
The advantages such as first week is high-efficient, high rate performance is excellent, but overall performance with artificial graphite compared with without clear superiority, and cost of manufacture height,
In market, accounting is not high.The artificial graphite that needle coke, petroleum coke, metallurgical coke etc. are obtained through high temperature graphitization at present, by modification
Processing, improves the defect of natural graphite to a certain extent, has obtained the approval of industry, and occupation rate of market is relatively high, but
The carbon materials such as artificial graphite raw needle coke, petroleum coke, metallurgical coke are main to be applicable in due to its distinctive microstructure and properties
It in fields such as graphite electrode, carburant, smelting iron and steels, is developed and produces exclusively for negative electrode material, they are intrinsic
Material structure makes it, and there are certain defects in terms of lithium ion battery applications, are not able to satisfy the following lithium ion battery development to cathode
The requirements at the higher level of material are not able to satisfy higher capacity, longer cycle life, higher especially in power battery application aspect
Security performance etc. require, therefore need to develop that a kind of structure is more stable, the dedicated carbon material that is more suitable for negative electrode material.
Summary of the invention
The present invention is directed to the defect of existing negative electrode material, proposes the production technology and its production dress of a kind of negative electrode material coke
It sets.The process characteristic is to carry out device improvement on the basis of mature delay coking process, and add in delayed coking miscella
Add high purity graphite powder, obtains negative electrode material coke through coking, the burnt purity is high of the negative electrode material produced, easily graphitization are manufactured
Negative electrode material has stable structure, capacity height, good rate capability, security performance height etc. excellent during lithium ion battery applications
Point meets the requirements at the higher level of lithium ion battery development.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of production technology of negative electrode material coke, is to add high purity graphite powder in delayed coking miscella, obtains through coking
To negative electrode material coke, specific process step includes:
1) raw material preheating: coking raw material is pumped to be extracted out by coking raw material tank, enters fractionation column base after heated furnace preheating；
2) it adds graphite powder and mixes: high purity graphite powder is added to the coking weight in heavy oil pans with fractionating column extraction
Oil after mixing, pumped to fractionation column base, is mixed into coking miscella with coking raw material and bottom of tower heavy oil；
3) delayed coking: miscella is pumped to coking heater, after heated stove heating, into delayed coking drums coke
Change；
4) Fractionator Bottom fractionating column fractionation and the mixing of coking raw material oil: is entered by the high-temperature oil gas that coking tower coking generates
Portion is fractionated and obtains coking heavy oil, light oil, coal gas, and part heavy oil is produced to heavy oil pans, and a part is adopted as byproduct
Out；
5) it devokes: after delayed coking drums are fed 24~72 hours, stopping charging, obtain cathode after hydraulic decoking, drying
Material is burnt.
The high purity graphite Powder Particle Size is 0~20 μm, and purity is greater than 99%.
The high purity graphite powder adding proportion attaches most importance to the 0.1~30% of oil quality.
The coking raw material is carbobitumen, petroleum pitch is one such or two kinds mix.
The quinoline insolubles content of the coking raw material is 0~0.5%, and ash content is 0~0.5%.
In above-mentioned steps 3) in, delayed coking main technologic parameters are as follows: 450~550 DEG C of coking temperature, coking in coking tower
0~1.0MPa of pressure, recycle ratio 0.2-2.
A kind of device that the production technology of negative electrode material coke uses, including coking tower, heating furnace, fractionating column；It further include weight
The heavy oil entrance of oily pans, the heavy oil pans is connected with the heavy oil of fractionating column extraction mouth, the material of heavy oil pans
Outlet connects an entrance of fractionation column base by pipeline with petroleum pump, and the heavy oil pans are equipped with tank heater and stir
Device is mixed, graphite powder feed inlet is additionally provided on heavy oil pans.
The heavy oil pans are two, and mixing is used alternatingly with charging.
Compared with prior art, the beneficial effects of the present invention are:
1) high purity graphite powder is added, and using low quinoline insolubles, the raw material of low ash, ensures the pure of negative electrode material coke
Degree.
2) carry out feed change Coking Process by adjusting the ratio of high purity graphite powder, change the microcosmic knot of negative electrode material coke
Structure meets different type negative electrode material production requirement.
3) it is improved on the basis of existing maturing appts, it can be achieved that negative electrode material coke continuous production, high production efficiency.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
In figure: 1- heating furnace, 2- coking tower, 3- fractionating column, 4- heavy oil pans, 5- coking raw material tank, 6- petroleum pump, 7-
Coking raw material pump, 8- feed pump, 9- oil circulating pump, 10- heavy oil pipeline, 11- heavy oil extraction line, 12- light oil, coal gas extraction line,
13- negative electrode material coke, 14- In Oil-gas Line, 15- graphite powder feed inlet.
Specific embodiment
Embodiments of the present invention are further illustrated with reference to the accompanying drawing:
As shown in Figure 1, a kind of production technology of negative electrode material coke, is to add high purity graphite in delayed coking miscella
Powder obtains negative electrode material coke through coking, and specific process step includes:
1) raw material preheating: coking raw material is pumped to be extracted out by coking raw material tank 5, and 3 bottom of fractionating column is entered after heated pre- 1 heat of furnace
Portion；
2) it adds graphite powder and mixes: high purity graphite powder is added to the coking produced in heavy oil pans 4 with fractionating column 3
Heavy oil after mixing, pumped to 3 bottom of fractionating column, is mixed into coking miscella with coking raw material and bottom of tower heavy oil；
3) delayed coking: miscella is pumped to coking heater 1, after heated furnace 1 heats, into delayed coking drums 2
Coking；
4) fractionating column 3 fractionation of fractionating column 3 and the mixing of coking raw material oil: is entered by the high-temperature oil gas that 2 coking of coking tower generates
Bottom is fractionated and obtains coking heavy oil, light oil, coal gas, and part heavy oil is produced to heavy oil pans 4, and a part is used as byproduct
Extraction；
5) it devokes: after delayed coking drums 2 are fed 24~72 hours, stopping charging, obtain cathode after hydraulic decoking, drying
Material is burnt.
The high purity graphite Powder Particle Size is 0~20 μm, and purity is greater than 99%.
The high purity graphite powder adding proportion attaches most importance to the 0.1~30% of oil quality.
The coking raw material is carbobitumen, petroleum pitch is one such or two kinds mix.Wherein petroleum pitch
Including asphalt, catalytic cracked oil pulp, ethylene residue etc..
The quinoline insolubles content of the coking raw material is 0~0.5%, and ash content is 0~0.5%.
In above-mentioned steps 3) in, delayed coking main technologic parameters are as follows: 450~550 DEG C of coking temperature in coking tower 2, it is burnt
Change 0~1.0MPa of pressure, recycle ratio 0.2-2.
A kind of device that the production technology of negative electrode material coke uses, including coking tower 2, heating furnace 1, fractionating column 3；Further include
The heavy oil entrance of heavy oil pans 4, the heavy oil pans 4 is connected with the heavy oil of fractionating column 3 extraction line, at 3 bottom of fractionating column
Portion is provided with the mixing oil circuit piping being made of oil circulating pump 9 and circulating line, and the material outlet of heavy oil pans 4 passes through pipe
Road and petroleum pump 6 connect the mixing oil circuit piping of 3 bottom of fractionating column, and the heavy oil pans 4 are equipped with tank heater and stir
Device is mixed, graphite powder feed inlet 15 is additionally provided on heavy oil pans 4.
The heavy oil pans 4 are two, and mixing is used alternatingly with charging.
Coking raw material tank 5 is connected by 7 connection heating furnace 1 of coking raw material pump, the coking raw material outlet of heating furnace 1 by pipeline
Connect the coking raw material entrance of 3 bottom of fractionating column.The mixing oil export of 3 bottom of fractionating column passes through pipeline and the connection heating of feed pump 8
The mixing oil export of furnace 1, heating furnace 1 connects coking tower 2 by pipeline.The In Oil-gas Line 14 of coking tower 2 connects 3 bottom of fractionating column
High-temperature oil gas entrance, it is burnt that 2 bottom of coking tower produces negative electrode material.
High purity graphite powder is added in heavy oil pans 4 with coking heavy oil after mixing, is sent through petroleum pump 6 to fractionation
Tower bottom 3, the coking raw material at 3 bottom of fractionating column, the heavy oil containing high purity graphite powder are uniformly mixed by oil circulating pump 9, are mixed into
Coking miscella, the heated furnace 1 of coking miscella are sent into 2 delayed coking of coking tower after heating.
Wherein, the 1# tank of heavy oil pans 4 and 2# tank are respectively alternately as head tank and material-compound tank, when 1# tank is as charging
When tank is fed, 2# is entered as material-compound tank, heavy oil extraction to 2# tank, high purity graphite powder by 2# tank deck graphite powder feed inlet 15, weight
Oil mixes in proportion with high purity graphite powder, is uniformly mixed for use through tank body；The charging of 1# tank finishes, switching 2# tank charging, this
When 1# tank be material-compound tank, 2# is head tank, so alternately, realize graphite powder and heavy oil continuous feed.
3 bottom of fractionating column is entered by the high-temperature oil gas that 2 coking of coking tower generates, is fractionated and obtains coking heavy oil, light oil, coal
Gas, part heavy oil are produced through heavy oil pipeline 10 to heavy oil pans 4, and a part is produced by heavy oil extraction line 11 as byproduct；
Light oil and gas is produced by light oil, coal gas extraction line 12.
[embodiment]
Using the present invention a kind of production technology and its process units of negative electrode material coke, and have recorded the main of 6 batches
Index is shown in Table 1:
1 each batch raw material of table and main indicator
Embodiment delayed coking main technologic parameters are shown in Table 2:
2 delayed coking main technologic parameters of table
Negative electrode material coke product main indicator obtained by 6 batches of embodiment is shown in Table 3:
3 negative electrode material coke main indicator of table
The above, only preferred embodiments of the present invention are not the limitations for making other forms to the present invention, appoint
What those skilled in the art, it is all without departing from technical solution of the present invention content, according to the technical essence of the invention and
Conceive any simple modification, equivalents and the remodeling made, still falls within the protection scope of technical solution of the present invention.
Claims (8)
1. a kind of production technology of negative electrode material coke, which is characterized in that it is to add high purity graphite powder in delayed coking miscella,
Negative electrode material coke is obtained through coking, specific process step includes:
1) raw material preheating: coking raw material is pumped to be extracted out by coking raw material tank, enters fractionation column base after heated furnace preheating；
2) it adds graphite powder and mixes: the coking heavy oil that high purity graphite powder is added in heavy oil pans with fractionating column extraction is mixed
After closing uniformly, pumped to fractionation column base, coking miscella is mixed into coking raw material and bottom of tower heavy oil；
3) delayed coking: miscella is pumped to coking heater, after heated stove heating, into delayed coking drums coking；
4) fractionating column fractionation and the mixing of coking raw material oil: fractionation column base is entered by the high-temperature oil gas that coking tower coking generates, is passed through
Fractionation obtains coking heavy oil, light oil, coal gas, and part heavy oil is produced to heavy oil pans, and a part is produced as byproduct；
5) it devokes: after delayed coking drums are fed 24~72 hours, stopping charging, obtain negative electrode material after hydraulic decoking, drying
It is burnt.
2. a kind of production technology of negative electrode material coke according to claim 1, which is characterized in that the high purity graphite powder
Degree is 0~20 μm, and purity is greater than 99%.
3. a kind of production technology of negative electrode material coke according to claim 1, which is characterized in that the high purity graphite powder adds
Ratio is added to attach most importance to the 0.1~30% of oil quality.
4. a kind of production technology of negative electrode material coke according to claim 1, which is characterized in that the coking raw material is coal
It is pitch, petroleum pitch is one such or two kinds mix.
5. a kind of production technology of negative electrode material coke according to claim 1, which is characterized in that the quinoline of the coking raw material
Insoluble moiety object content is 0~0.5%, and ash content is 0~0.5%.
6. a kind of production technology of negative electrode material coke according to claim 1, which is characterized in that in above-mentioned steps 3) in,
Delayed coking main technologic parameters are as follows: 450~550 DEG C of coking temperature in coking tower, 0~1.0MPa of coking pressure, recycle ratio
0.2-2。
7. the device that a kind of production technology of negative electrode material coke as described in claim 1 uses, including coking tower, heating furnace,
Fractionating column；It is characterized in that, further including heavy oil pans, the heavy oil entrance of the heavy oil pans and the heavy oil of fractionating column are produced
Mouth is connected, and the material outlet of heavy oil pans connects an entrance of fractionation column base by pipeline with petroleum pump, described heavy
Oily pans are equipped with tank heater and blender, and graphite powder feed inlet is additionally provided on heavy oil pans.
8. the device that a kind of production technology of negative electrode material coke as claimed in claim 7 uses, which is characterized in that the heavy oil
Pans are two, and mixing is used alternatingly with charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811039657.3A CN109082301B (en) | 2018-09-06 | 2018-09-06 | Production process and production device of anode material coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811039657.3A CN109082301B (en) | 2018-09-06 | 2018-09-06 | Production process and production device of anode material coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109082301A true CN109082301A (en) | 2018-12-25 |
| CN109082301B CN109082301B (en) | 2023-12-26 |
Family
ID=64840954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811039657.3A Active CN109082301B (en) | 2018-09-06 | 2018-09-06 | Production process and production device of anode material coke |
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| Country | Link |
|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624956A (en) * | 2004-12-02 | 2005-06-08 | 辽宁弘光科技集团有限公司 | Production method of carbon nagtive electrode material of lithium ion cell |
| CN106635102A (en) * | 2016-12-09 | 2017-05-10 | 山东益大新材料有限公司 | Process for producing negative electrode material coke by taking supercritical extraction oil slurry as raw material and application of process |
| CN208857216U (en) * | 2018-09-06 | 2019-05-14 | 中钢集团鞍山热能研究院有限公司 | A kind of process units of negative electrode material coke |
-
2018
- 2018-09-06 CN CN201811039657.3A patent/CN109082301B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624956A (en) * | 2004-12-02 | 2005-06-08 | 辽宁弘光科技集团有限公司 | Production method of carbon nagtive electrode material of lithium ion cell |
| CN106635102A (en) * | 2016-12-09 | 2017-05-10 | 山东益大新材料有限公司 | Process for producing negative electrode material coke by taking supercritical extraction oil slurry as raw material and application of process |
| CN208857216U (en) * | 2018-09-06 | 2019-05-14 | 中钢集团鞍山热能研究院有限公司 | A kind of process units of negative electrode material coke |
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| CN109082301B (en) | 2023-12-26 |
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