CN108130119A - A kind of drawing of needle coke industrialized production is burnt, drying means - Google Patents
A kind of drawing of needle coke industrialized production is burnt, drying means Download PDFInfo
- Publication number
- CN108130119A CN108130119A CN201810109911.6A CN201810109911A CN108130119A CN 108130119 A CN108130119 A CN 108130119A CN 201810109911 A CN201810109911 A CN 201810109911A CN 108130119 A CN108130119 A CN 108130119A
- Authority
- CN
- China
- Prior art keywords
- coking
- burnt
- tower
- dry
- oil
- 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.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 52
- 239000011331 needle coke Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000004939 coking Methods 0.000 claims abstract description 206
- 239000002994 raw material Substances 0.000 claims abstract description 47
- 239000000571 coke Substances 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000011280 coal tar Substances 0.000 claims abstract description 8
- 239000003209 petroleum derivative Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 70
- 238000007600 charging Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 239000000295 fuel oil Substances 0.000 claims description 8
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000005235 decoking Methods 0.000 claims description 4
- 238000005194 fractionation Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 abstract description 5
- 238000001354 calcination Methods 0.000 description 4
- 230000016507 interphase Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011311 coal-based needle coke Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000011269 tar Substances 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
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/005—Coking (in order to produce liquid products mainly)
-
- 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
-
- 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
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1037—Hydrocarbon fractions
Abstract
The present invention relates to drawing coke, the drying means of a kind of needle coke industrialized production, it is characterised in that：By two-furnace three-tower capital equipment to by pre-process workshop section come coking raw material：Coal tar fraction or petroleum distillate carry out delayed coking, and coking heater distinguishes continuous low temperature to three coking towers into coking raw material, and three coking towers replace, circulate operations.When the raw material of coking heater heating switches to the second coking tower by the first coking tower, the drawing coke for drawing burnt, dry heat stove heat, dry oil are introduced into the first coking tower and carry out drawing coke, dry, three coking tower alternatings, circulate operations.The present invention uses two stoves, three tower industrial process stream, it is that a coking heater heats raw material to three coking towers respectively always, another Tai Lajiao, dry heat stove draw burnt, dry oil to three coking tower heating respectively always, the material properties of two each self-heatings of heating furnace is remained the same from beginning to end, it is as a result, easy to operate, stablize, draw burnt, drying fully, improve product quality and yield.
Description
Technical field
The invention belongs to coal chemical industry and technical field of petrochemical industry, are related to the industry of coal-based needle coke and petroleum needle coke
Metaplasia production. art, drawing coke, the drying means of more particularly to a kind of needle coke industrialized production.
Background technology
At present, domestic needle coke is battery cathode used in production steel-making ultra high power (UHP) graphite electrode, electric vehicle etc.
The needle coke delayed coking stage of the primary raw material of material, in the prior art traditional mode of production, industrial process stream use one
Stove two-tower process, i.e. a heating furnace heat raw material, heating furnace laser heating raw material, two coking tower alternatings to two coking towers
Switching.And when heating raw material to a coking tower, the later stage will convert recycle oil and carry out drawing burnt, drying, the drawback is that recycle oil
Switching between part coking, raw material and recycle oil is unintelligible, and fluctuation of service draws burnt, drying time is short etc., causes product matter
It measures relatively low.Since needle coke has good graphitization characteristic, purposes is growing day by day, and dosage also continues to increase, international, domestic city
Field shortage, and selling price is also continuously improved, and present 30000 yuan/ton are increased to by original 5000 yuan/ton.The country is in coalification
In work and petroleum chemical industry, needle coke process units has been built up up to 500,000 tons/year, but has been existed：Quality can't be caught up with
Or more than import needle coke level, it is mainly manifested in coefficient of thermal expansion（CTE it is) high, granularity is small, intensity is low.Also it is exactly domestic existing
It is complicated to be completed needle coke technological process of production practical operation, operation is unstable, and service life of equipment is short, and product quality is low and not
The problems such as stablizing.
Invention content
The present invention overcomes defects of the existing technology, it is therefore an objective to improve needle coke quality, reach and exceed import
Needle coke is horizontal, replaces import completely, extends the service life of equipment, and the drawing for providing a kind of needle coke industrialized production is burnt, dry
Drying method.
The drawing of needle coke industrialized production of the present invention is burnt, drying means content Description：
The drawing of needle coke industrialized production of the present invention is burnt, drying means, it is characterised in that：By two-furnace three-tower capital equipment to by
Pre-process the coking raw material that workshop section comes：Coal tar fraction or petroleum distillate coking raw material carry out delayed coking, coking heater point
For other continuous low temperature to three coking towers into coking raw material, not conversion medium is switched to the after the completion of to the charging of the first coking tower
Two coking towers are switched to third coking tower after the completion of to the charging of the second coking tower, are cut again after the completion of the charging of third coking tower
Change to the first coking tower, three coking tower alternatings, circulate operations.Switched in the raw material of coking heater heating by the first coking tower
When the second coking tower, by the drawing for drawing burnt, dry heat stove heat is burnt, dry oil introduce the first coking tower draw it is burnt, dry
It is dry, it is switched to the second coking tower again after the completion of the first coking tower draws burnt, drying, when completion burnt, dry to the drawing of the second coking tower
After be switched to third coking tower, when third coking tower draw it is burnt, dry after the completion of switch back into the first coking tower again, three coking towers are handed over
It replaces, circulate operation.Burnt, dry heat stove heat medium is drawn not change.Coking tower draw it is burnt, dry be accomplished to next time again into
The time of coking raw material is that cold coke, decoking, pressure testing, the time for giving heat are carried out to coking tower.
The drawing of needle coke industrialized production is burnt, drying means, completes in the steps below：
（1）, by pre-process workshop section Lai coking raw material：Coal tar fraction or petroleum distillate enter fractionation after two-way is divided after heat
4 lower part of tower, after carrying out heat exchange with the high-temperature oil gas of coking tower 3 at this and being mixed with the recycle oil in oil gas, in fractionating column 4
Bottom is extracted out by coking heater fill pump 1, is sent to coking heater 2 and is heated, and 300 ~ 360 DEG C of 2 inlet temperature of coking heater goes out
480 ~ 500 DEG C of temperature of mouth, the material after heating enter coking tower 3A, feed time 24 hours, inlet amount 18 through four-way valve 10A
Ton hour, coking tower share three（3A、3B、3C）；
（2）, after being completed to coking tower 3A chargings through four-way valve 10A be switched to coking tower 3B, completed when being fed to coking tower 3B
Coking tower 3C is switched to by four-way valve 10B, coking tower 3A is switched to again through four-way valve 10A after coking tower 3C chargings are completed,
Three coking towers（3A、3B、3C）Alternately, circulate operation；Coking is switched to by coking tower 3A in the raw material that coking heater 2 heats
When tower 3B, drawing coke, drying oil that burnt, dry heat stove 7 heats will be drawn to introduce coking tower 3A and carry out drawing coke, drying, work as coking
Tower 3A coking towers are switched to coking tower 3B again after the completion of drawing coke, drying, when coking tower 3B draws burnt, drying to be switched to coke after the completion
Change tower 3C, switch back into coking tower 3A again after the completion of coking tower 3C draws burnt, drying, three coking tower alternatings, circulate operations are drawn
Burnt, dry heat stove heat medium does not change；
（3）, to draw burnt, dry oil be the light oil for being not easy coking cut from 4 first half of fractionating column, cut a temperature 170-280
DEG C, 0.16 ~ 0.30mPa of point pressure is cut, the drawing cut is burnt, drying oil is by drawing burnt, dry oil dashpot 5 burnt, dry by drawing
Dry heating furnace fill pump 6 is sent to drawing coke, 7 convection section of dry heat stove, draws burnt, 180 ~ 300 DEG C of 7 inlet temperature of dry heat stove,
It exports to draw to enter in convection section when being heated to 400 ~ 460 DEG C and draws burnt, dry gs-oil separator 8, carry out gas-liquid separation herein, no
The gas phase of suitable coking enters that drawing is burnt, 7 radiant section entrance of dry heat stove, draw burnt, 7 outlet temperature of dry heat stove reach 500 ~
Enter coking tower after 535 DEG C, draw coking 0.25 ~ 0.50MPa of tower top pressure during burnt, drying, draw burnt, dry gs-oil separator 8
In suitable coking liquid with drawing burnt, dry oily 9 extraction of heavy oil extraction pump through cooling down outside carrying device.When coking tower draws burnt, dry
Between 24 hours, into drawing 14 ton hour of burnt, dry oil mass, coking tower burnt, dry is accomplished to next time again into coking raw material drawing
Time is coking tower to be carried out cold coke, decoking, pressure testing, the time for giving heat, 24 hours altogether；
（4）, from coking tower（3A、3B、3C）In oil gas out enter fractionating column 4, fractionating column 4 pushes up 172 DEG C of temperature, tower top pressure
0.25 mPa, fractionating column 4 eject incoagulable gas and overhead oil（Partial reflux after cooling）, side line cuts light oil (part respectively
As drawing burnt, dry oil), coking heavy oil（Partial reflux after cooling）, it is hot into high-temperature oil gas and coking raw material in 4 lower part of fractionating column
After exchange, extract out, be sent into for bottom of towe miscella supply coking heater fill pump 1 after recycle oil and coking raw material mixing in oil gas
Coking heater 2 heats, and recycle ratio is 0.5 ~ 1.0.
The raw material is coking raw material (coal tar fraction and petroleum distillate), and softening point (SP) is 0 ~ 35 DEG C, density
(d) 1.0 ~ 1.3g/cm3 (100 DEG C), 10 ~ 250cp of viscosity (u) (90 DEG C), quinoline insolubles QI ﹤ 0.1%.
The drawing is burnt, drying oil nature:Proportion（70/4℃）0.98~1.2
Boiling range（V）：Initial boiling point 182 DEG C ~ 280
250℃ 60~90%
280℃ 75~95%
350℃ 95~98%
400 DEG C of ﹤ is done
300 ~ 360 DEG C of the coking heater inlet temperature, 480 ~ 500 DEG C of outlet temperature;Coking tower top pressure 0.25 ~
0.50MPa.Coking tower into the raw material time be 20-30 hours.
The drawing is burnt, 180 ~ 300 DEG C of dry heat stove inlet temperature, 500 ~ 535 DEG C of outlet temperature, coking tower top pressure
0.25 ~ 0.50MPa of power.
Coking tower is 20-30 hours into burnt, the dry oily time is drawn.
The coking heater and drawing is burnt, dry heat stove is continuously run, and the material of every heating stove heat is always
Such as one, property is constant.
The drawing of needle coke industrialized production of the present invention is burnt, drying means, the Raw needle coke product produced, through calcining
The needle coke with Japanese new daily use chemicals relatively reaches same needle coke standard afterwards；And national standard GB/ is met or exceeded
The top grade index of T32158-2015, higher than the needle coke best quality of domestic prior art production.
Description of the drawings
Fig. 1 is the process flow system installation drawing of the drawing coke of needle coke industrialized production, drying means；
In figure：1 is coking heater fill pump, 2 be coking heater, 3 be 3 coking towers（3A、3B、3C）, 4 be fractionation
Tower, 5 be draw burnt, dry oily dashpot, 6 be draw coke, dry heat stove fill pump, 7 be draw coke, dry heat stove, 8 be drawing coke,
Dry gs-oil separator, 9 are that drawing is burnt, the oily heavy oil extraction of drying pumps, 10 be 2 groups of four-way valves（10A、10B）.
Specific embodiment
The drawing of needle coke industrialized production of the present invention is burnt, drying means is achieved in that and does below in conjunction with the accompanying drawings specifically
Explanation.
The drawing of needle coke industrialized production of the present invention is burnt, drying means, and needle coke production includes pretreatment of raw material, delay coke
Change, calcining three phases, delayed coking is the critical stage of needle coke production, and coking raw material carbonizes initial stage appearance in coking tower
Interphase, in further heating carbonization process, mesophasespherule merges and is formed optically anisotropic by growth
Fibrous structure.After coking raw material determines, heating charing heat treatment condition is very necessary, selects to close in heat treatment process
Suitable atmosphere inhibits the generation of mosaic texture and defective structure to generating quantity, the quality of mesophasespherule, as more as possible
The anisotropy fluidised form shape structure of fibrous structure that can be formed of generation, just seem very necessary.Early period low temperature for a long time into
Material, later stage high temperature draw coke, drying effect best.The present invention selects two heating furnaces thus, and early period, coking heater was to three cokes
Change tower difference low temperature charging, its material is made to have sufficient time generation bead interphase, and interphase is made smoothly to grow into fiber
Shape structure.Later stage draws burnt, dry heat stove to draw burnt, dry oil for high temperature respectively to three coking towers, makes the curing of its material ripe,
And interphase fibre structure downstream direction is made to pull into anisotropy fluidised form shape structure, and high temperature draws burnt, dry oil in coking tower
Interior noncoking.A kind of industrial implementation of novel drawing coke, drying means of needle coke, it is main to be set using delayed coking is general
Standby, wherein coking heater 2, using the vertical batch-type furnace of horizontal tube, which is suitable for the larger high-temperature-coked raw material of viscosity and adds
Heat；Burnt, dry heat stove 7 is drawn to use tube coil cylinder stove, similar to Tar tube furnace, convection section and radiant section draw respectively into and out of
Mouthful to outside stove, the material of tube furnace is heat-resist, which is suitable for that viscosity is small, material heating of high temperature；Coking tower 3 draws coke, is dry
The material of dry gs-oil separator 8 uses heat resisting steel 15CrMoR or S30408；The material of fractionating column uses stainless steel S30408；Dress
1,6 and La Jiao of material pump, dry oily heavy oil extraction pump 9 select high-temperature hot oil pump.
See Fig. 1, being that needle coke of the present invention is industrial draws burnt, drying means process flow chart.
The drawing of needle coke industrialized production of the present invention is burnt, drying means is completed in the steps below：
1st, by pre-process workshop section Lai coking raw material：Coal tar fraction or petroleum distillate enter fractionating column 4 after two-way is divided after heat
Lower part, after carrying out heat exchange with the high-temperature oil gas of coking tower 3 at this and being mixed with the recycle oil in oil gas, at 4 bottom of fractionating column
It is extracted out by coking heater fill pump 1, is sent to coking heater 2 and heats, 300 ~ 360 DEG C of 2 inlet temperature of coking heater, outlet
480 ~ 500 DEG C of temperature, material after heating enter coking tower 3A through four-way valve 10A, feed time 24 hours, and 18 tons of inlet amount/
Hour, coking tower shares three（3A、3B、3C）；
2nd, coking tower 3B is switched to through four-way valve 10A after being completed to coking tower 3A chargings, after the completion of being fed to coking tower 3B
Coking tower 3C is switched to through four-way valve 10B, coking tower 3A is switched to again through four-way valve 10A after coking tower 3C chargings are completed, three
A coking tower（3A、3B、3C）Alternately, circulate operation；Coking tower is switched to by coking tower 3A in the raw material that coking heater 2 heats
When 3B, drawing coke, drying oil that burnt, dry heat stove 7 heats will be drawn to introduce coking tower 3A and carry out drawing coke, drying, work as coking tower
3A coking towers are switched to coking tower 3B again after the completion of drawing coke, drying, when coking tower 3B draws burnt, drying to be switched to coking after the completion
Tower 3C switches back into coking tower 3A again after the completion of coking tower 3C drawings coke, drying, and three coking towers replace, circulate operations, drawing coke,
The medium of dry heat stove heat does not change；
3rd, it is the light oil for being not easy coking cut from 4 first half of fractionating column to draw burnt, dry oil, cuts 170-280 DEG C of a temperature,
0.16 ~ 0.30mPa of point pressure is cut, the drawing cut is burnt, drying oil is by drawing burnt, dry oil dashpot 5 burnt, dry by drawing
Heating furnace fill pump 6 is sent to drawing coke, 7 convection section of dry heat stove, draws burnt, 180 ~ 300 DEG C of 7 inlet temperature of dry heat stove, adds
Heat exports extraction into burnt, dry gs-oil separator 8 is drawn at 400 ~ 460 DEG C in convection section, carries out gas-liquid separation herein, unsuitable
The gas phase of coking enters drawing coke, 7 radiant section entrance of dry heat stove, and burnt, 7 radiant section outlet temperature of dry heat stove is drawn to reach
Enter coking tower after 500 ~ 535 DEG C, draw coking 0.25 ~ 0.50MPa of tower top pressure during burnt, drying, draw burnt, dry Oil-gas Separation
The liquid of suitable coking in device 8 drawing coke, dry oily heavy oil extraction pump 9 and extract out through cooling down outside carrying device.Coking tower draws burnt, dry
24 hours time, into drawing 14 ton hour of burnt, dry oil mass, coking tower is accomplished to next time again into coking raw material in drawing coke, drying
Time be that cold coke is carried out to coking tower, decoking, pressure testing, gives the hot time, 24 hours altogether；
4th, from coking tower（3A、3B、3C）In oil gas out enter fractionating column 4, fractionating column 4 pushes up 172 DEG C of temperature, tower top pressure
0.25 mPa, fractionating column 4 eject incoagulable gas and overhead oil（Partial reflux after cooling）, side line cuts light oil (part respectively
As drawing burnt, dry oil), coking heavy oil（Partial reflux after cooling）, it is hot into high-temperature oil gas and coking raw material in 4 lower part of fractionating column
After exchange, extract out, be sent into for bottom of towe miscella supply coking heater fill pump 1 after recycle oil and coking raw material mixing in oil gas
Coking heater 2 heats, and recycle ratio is 0.5 ~ 1.0.
The raw material is coking raw material：Coal tar fraction and petroleum distillate, softening point (SP) are 0 ~ 35 DEG C, density
(d) 1.0 ~ 1.3g/cm3 (100 DEG C), 10 ~ 250cp of viscosity (u) (90 DEG C), quinoline insolubles QI ﹤ 0.1%.
The drawing is burnt, drying oil nature:Proportion（70/4℃）0.98~1.2
Boiling range（V）：Initial boiling point 182 DEG C ~ 280
250℃ 60~90%
280℃ 75~95%
350℃ 95~98%
400 DEG C of ﹤ is done
300 ~ 360 DEG C of the coking heater inlet temperature, 480 ~ 500 DEG C of outlet temperature;Coking tower top pressure 0.25 ~
0.50MPa.Coking tower into the raw material time be 20-30 hours.
The drawing is burnt, 180 ~ 300 DEG C of dry heat stove inlet temperature, 500 ~ 535 DEG C of outlet temperature, coking tower top pressure
0.25 ~ 0.50MPa of power.
Coking tower is 20-30 hours into burnt, the dry oily time is drawn.
The coking heater and drawing is burnt, dry heat stove is continuously run, and the material of every heating stove heat is always
Such as one, property is constant.
According to 1 gained needle coke of embodiment（After calcining）Index be compared with other needle coke products, the result is shown in
Table
As can be seen from the table, the Raw needle coke product produced, after calcining compared with the needle coke of Japanese new daily use chemicals
Reach same needle coke standard；And the top grade index of national standard GB/T32158-2015 is met or exceeded.It is more existing than the country
In production needle coke best quality higher.
Although being described in further detail above by specific embodiment to the present invention, it is not limited to these implementations
Example under conditions of the design for not departing from the present invention, can also there is the equivalent embodiments of other more evolutions, and the model of the present invention
It encloses and is determined by the scope of the appended claims.
Claims (6)
1. a kind of drawing of needle coke industrialized production is burnt, drying means, it is characterised in that：The coking that pretreatment unit is produced
Raw material introduces the high-temperature oil gas that fractionation column base and coking tower come as raw material and exchanges heat, and with recycle oil therein mixing and laggard
Coking tower ABC coking is respectively enterd after coking heater heating；After a certain tower raw material installs, switch to by drawing burnt, dry add
Burnt, the dry oil of drawing that hot stove is come draw burnt, dry, and burnt, dry oil is drawn to come from the light oil on fractionating column top, is drawn burnt, dry
After the completion of dry, coking tower is cooled down, devoked, suppressed, gives heat, treats next time into raw material；Two heating furnaces are continuously run, three
Coking tower interval alternate cycles operate；The drawing of needle coke industrialized production is burnt, drying means, completes in the steps below：
（1）, by pre-process workshop section Lai coking raw material：Coal tar fraction or petroleum distillate enter fractionation after two-way is divided after heat
4 lower part of tower, after carrying out heat exchange with the high-temperature oil gas of coking tower 3 at this and being mixed with the recycle oil in oil gas, in fractionating column 4
Bottom is extracted out by coking heater fill pump 1, is sent to coking heater 2 and is heated, and 300 ~ 360 DEG C of 2 inlet temperature of coking heater goes out
480 ~ 500 DEG C of temperature of mouth, the material after heating enter coking tower 3A, feed time 24 hours, inlet amount 18 through four-way valve 10A
Ton hour, coking tower share three（3A、3B、3C）；
（2）, after being completed to coking tower 3A chargings through four-way valve 10A be switched to coking tower 3B, completed when being fed to coking tower 3B
Coking tower 3C is switched to by four-way valve 10B, coking tower 3A is switched to again through four-way valve 10A after coking tower 3C chargings are completed,
Three coking towers（3A、3B、3C）Alternately, circulate operation；Coking is switched to by coking tower 3A in the raw material that coking heater 2 heats
When tower 3B, drawing coke, drying oil that burnt, dry heat stove 7 heats will be drawn to introduce coking tower 3A and carry out drawing coke, drying, work as coking
Tower 3A coking towers are switched to coking tower 3B again after the completion of drawing coke, drying, when coking tower 3B draws burnt, drying to be switched to coke after the completion
Change tower 3C, switch back into coking tower 3A again after the completion of coking tower 3C draws burnt, drying, three coking tower alternatings, circulate operations are drawn
Burnt, dry heat stove heat medium does not change；
（3）, to draw burnt, dry oil be the light oil for being not easy coking cut from 4 first half of fractionating column, cut a temperature 170-280
DEG C, 0.16 ~ 0.30mPa of point pressure is cut, the drawing cut is burnt, drying oil is by drawing burnt, dry oil dashpot 5 burnt, dry by drawing
Dry heating furnace fill pump 6 is sent to drawing coke, 7 convection section of dry heat stove, draws burnt, 180 ~ 300 DEG C of 7 inlet temperature of dry heat stove,
It exports to draw to enter in convection section when being heated to 400 ~ 460 DEG C and draws burnt, dry gs-oil separator 8, carry out gas-liquid separation herein, no
The gas phase of suitable coking enters that drawing is burnt, 7 radiant section entrance of dry heat stove, draw burnt, 7 outlet temperature of dry heat stove reach 500 ~
Enter coking tower after 535 DEG C, draw coking 0.25 ~ 0.50MPa of tower top pressure during burnt, drying, draw burnt, dry gs-oil separator 8
In suitable coking liquid with drawing burnt, dry oily 9 extraction of heavy oil extraction pump through cooling down outside carrying device；When coking tower draws burnt, dry
Between 24 hours, into drawing 14 ton hour of burnt, dry oil mass, coking tower burnt, dry is accomplished to next time again into coking raw material drawing
Time is coking tower to be carried out cold coke, decoking, pressure testing, the time for giving heat, 24 hours altogether；
（4）, from coking tower（3A、3B、3C）In oil gas out enter fractionating column 4, fractionating column 4 pushes up 172 DEG C of temperature, tower top pressure
0.25 mPa, fractionating column 4 eject incoagulable gas and overhead oil（Partial reflux after cooling）, side line cuts light oil (part respectively
As drawing burnt, dry oil), coking heavy oil（Partial reflux after cooling）, it is hot into high-temperature oil gas and coking raw material in 4 lower part of fractionating column
After exchange, extract out, be sent into for bottom of towe miscella supply coking heater fill pump 1 after recycle oil and coking raw material mixing in oil gas
Coking heater 2 heats, and recycle ratio is 0.5 ~ 1.0.
2. drawing coke, the drying means of needle coke industrialized production according to claim 1, it is characterised in that：The raw material
Coal tar fraction and petroleum distillate are used for coking raw material.
3. the drawing of needle coke industrialized production according to claim 1 is burnt, drying means, it is characterised in that：The original
Expect that its softening point (SP) is 0 ~ 35 DEG C for coking raw material, 1.0 ~ 1.3g/cm3 of density (d) (100 DEG C), 10 ~ 250cp of viscosity (u)
(90 DEG C), quinoline insolubles QI ﹤ 0.1%.
4. drawing coke, the drying means of needle coke industrialized production according to claim 1, it is characterised in that：The drawing is burnt,
Dry oil nature:Proportion（70/4℃）0.98~1.2
Boiling range（V）：Initial boiling point 182 DEG C ~ 280
250℃ 60~90%
280℃ 75~95%
350℃ 95~98%
400 DEG C of ﹤ is done.
5. the drawing of needle coke industrialized production according to claim 1 is burnt, drying means, it is characterised in that：The coke
Change 300 ~ 360 DEG C of heating furnace inlet temperature, 480 ~ 500 DEG C of outlet temperature;0.25 ~ 0.50Mpa of coking tower top pressure;Coking tower into
The raw material time is 20 ~ 30 hours.
6. the drawing of needle coke industrialized production according to claim 1 is burnt, drying means, it is characterised in that：The drawing
Burnt, 180 ~ 300 DEG C of dry heat stove inlet temperature, 500 ~ 535 DEG C of outlet temperature, 0.25 ~ 0.50MPa of coking tower top pressure；It is burnt
It is 20 ~ 30 hours to change tower into burnt, the dry oily time is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109911.6A CN108130119A (en) | 2018-02-05 | 2018-02-05 | A kind of drawing of needle coke industrialized production is burnt, drying means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109911.6A CN108130119A (en) | 2018-02-05 | 2018-02-05 | A kind of drawing of needle coke industrialized production is burnt, drying means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108130119A true CN108130119A (en) | 2018-06-08 |
Family
ID=62430477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810109911.6A Pending CN108130119A (en) | 2018-02-05 | 2018-02-05 | A kind of drawing of needle coke industrialized production is burnt, drying means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108130119A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587661A (en) * | 2018-07-09 | 2018-09-28 | 鞍山兴德工程技术有限公司 | A kind of device and method preparing needle coke based on delay coking process |
| CN109957412A (en) * | 2019-04-12 | 2019-07-02 | 山东益大新材料有限公司 | A kind of needle coke granularity that improves cuts burnt method |
| CN111320169A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Process method for producing high-end graphite carbon material |
| CN111320167A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Combined process method for producing high-end graphite carbon material |
| CN111320168A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Device and method for producing high-end graphite carbon material |
| CN113583701A (en) * | 2021-08-26 | 2021-11-02 | 山东亿维新材料有限责任公司 | Production process for improving optical performance of needle coke |
| CN113698956A (en) * | 2021-08-31 | 2021-11-26 | 山东亿维新材料有限责任公司 | Production process for improving compressive strength of needle coke |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724419A (en) * | 2008-10-28 | 2010-06-09 | 中国石油化工股份有限公司 | Method for producing needle coke by utilizing delay coking of coal tar |
| CN104673372A (en) * | 2013-12-02 | 2015-06-03 | 中石化洛阳工程有限公司 | Method for improving distribution of delayed coking product |
| CN106635143A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Needle-like coke preparation method |
-
2018
- 2018-02-05 CN CN201810109911.6A patent/CN108130119A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724419A (en) * | 2008-10-28 | 2010-06-09 | 中国石油化工股份有限公司 | Method for producing needle coke by utilizing delay coking of coal tar |
| CN104673372A (en) * | 2013-12-02 | 2015-06-03 | 中石化洛阳工程有限公司 | Method for improving distribution of delayed coking product |
| CN106635143A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Needle-like coke preparation method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587661A (en) * | 2018-07-09 | 2018-09-28 | 鞍山兴德工程技术有限公司 | A kind of device and method preparing needle coke based on delay coking process |
| CN111320169A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Process method for producing high-end graphite carbon material |
| CN111320167A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Combined process method for producing high-end graphite carbon material |
| CN111320168A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Device and method for producing high-end graphite carbon material |
| CN111320167B (en) * | 2018-12-13 | 2023-09-01 | 中国石油化工股份有限公司 | Combined process method for producing high-end graphite carbon material |
| CN109957412A (en) * | 2019-04-12 | 2019-07-02 | 山东益大新材料有限公司 | A kind of needle coke granularity that improves cuts burnt method |
| CN113583701A (en) * | 2021-08-26 | 2021-11-02 | 山东亿维新材料有限责任公司 | Production process for improving optical performance of needle coke |
| CN113698956A (en) * | 2021-08-31 | 2021-11-26 | 山东亿维新材料有限责任公司 | Production process for improving compressive strength of needle coke |
| CN113698956B (en) * | 2021-08-31 | 2022-11-15 | 山东亿维新材料有限责任公司 | Production process for improving compressive strength of needle coke |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108130119A (en) | A kind of drawing of needle coke industrialized production is burnt, drying means | |
| CN101289624B (en) | Process for producing moderate temperature modified bitumen by continuously pressurizing and hot-polymerizing at two stages connected in series | |
| CN108587661A (en) | A kind of device and method preparing needle coke based on delay coking process | |
| CN102295943B (en) | Method for coking needle coke by large recycle ratio oil system | |
| CN100362081C (en) | Industrial producing process for coal series needle coke | |
| CN102021005B (en) | Method for producing needle coke | |
| CN109536189A (en) | The production technology of needle coke | |
| CN109370642A (en) | A kind of delay coking process being used to prepare coal-based needle coke | |
| CN109517614A (en) | Distillation produces various asphalt Product Process and device in conjunction with extraction phase | |
| CN207845580U (en) | A kind of needle coke industrialized production draws burnt, drying technology process system and device | |
| CN105985796A (en) | Delayed coking method | |
| CN207973707U (en) | A kind of needle coke process units | |
| CN107057740B (en) | Modified asphalt production device | |
| CN103865556A (en) | Device and method for producing mesophase-free medium-temperature modified asphalt | |
| CN209508153U (en) | Distillation produces various asphalt Product Process device in conjunction with extraction phase | |
| CN109504416B (en) | Production process of coal-based needle coke | |
| CN103215062A (en) | Delay coking processing method of inferior residual oil | |
| CN106635102A (en) | Process for producing negative electrode material coke by taking supercritical extraction oil slurry as raw material and application of process | |
| CN101348730A (en) | Crude oil gradual distillation energy saving apparatuses and technological process | |
| CN107245346B (en) | Modified asphalt production process | |
| CN111892941B (en) | Coking device and process method for producing needle coke | |
| CN208517348U (en) | A kind of device preparing needle coke based on delay coking process | |
| CN204939397U (en) | The device of modified pitch produced by single stove list still | |
| CN105623693B (en) | A method of preparing needle-shape coke raw material | |
| CN111892940B (en) | Method and device for producing needle coke |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |
|
| WD01 | Invention patent application deemed withdrawn after publication |