CN109439353A - A kind of coking calcining integration system of refined bitumen is for needle coke technique - Google Patents
A kind of coking calcining integration system of refined bitumen is for needle coke technique Download PDFInfo
- Publication number
- CN109439353A CN109439353A CN201811374503.XA CN201811374503A CN109439353A CN 109439353 A CN109439353 A CN 109439353A CN 201811374503 A CN201811374503 A CN 201811374503A CN 109439353 A CN109439353 A CN 109439353A
- Authority
- CN
- China
- Prior art keywords
- coking
- calcining
- gas
- oven
- furnace body
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention belongs to refined bitumen coking technology fields, and in particular to a kind of coking calcining integration system of refined bitumen is for needle coke technique, comprising the following steps: one, into coking calcining all-in-one oven be passed through inert gas；Two, it is injected after preheating refined bitumen in coking calcining all-in-one oven；Three, at 350 DEG C -500 DEG C, green coke is made in 0.1MPa-0.6MPa in furnace pressure control for in-furnace temperature control；Four, the oil gas generated in furnace is discharged into oil gas temporary storage tank, is fractionated to obtain combustion gas and coking oil product；Five, residual oil gas after inert gas replacement, is warming up to 1450 DEG C -1500 DEG C and retains 1h-5h in furnace, is subsequently cooled to 60 DEG C hereinafter, coke is removed from furnace body up to the burnt finished product that burns；Present invention process method is simple and easy, it is easy to accomplish industrialization production can obtain high quality needle-type coke product.
Description
Technical field
The invention belongs to refined bitumen coking technology fields, and in particular to a kind of to prepare needle using refined bitumen coking calcining
The technique of shape coke.
Background technique
Needle coke is a kind of important new material of carbon industry, has good graphitization characteristic, mainly for the production of
Ultra high power graphite electrode.The ultra high power graphite electrode produced with needle coke is low with resistivity, bulk density is big, mechanical strong
The advantages that degree is high, thermal expansion coefficient is small, thermal shock resistance is good can meet the quality requirement of large capacity electric arc furnaces, improve metallurgy effect
Rate.
Needle coke is divided into oil system needle coke and coal-based needle coke by the difference of raw material.Oil system needle coke is original with black petroleum products
Material production, coal-based needle coke are produced using coal tar distillate oil or coal tar asphalt as raw material.The production process of needle coke is mainly divided
For pretreatment of raw material, delayed coking and calcining.Wherein the purpose of pretreatment of raw material is to obtain the refined bitumen of low quinoline insolubles,
Delayed coking be in order to which refined bitumen progress coking is obtained green coke, calcining be in order to by green coke prepared by delayed coking into one
Walk high-temperature calcination.
And current technical operation flow is to will be up to 500 DEG C after green coke is made in delayed coking unit in refined bitumen
The green coke of left and right carry out it is cooling after be then sent through calcining unit and calcined, there are complex process, and powder coke content is more, and waste of energy etc. is asked
Topic.Simultaneously because needle coke production needs alternating temperature transformation to operate, the more difficult behaviour for adapting to alternating temperature transformation of existing delay coking process
It is required, the needle coke of existing delay coking process production is caused to there is a problem of that quality is unevenly and unstable.Simultaneously because
Alternating temperature transformation operates when delayed coking drums produce needle coke, causes the production of delayed coking drums unstable, so that coke drum is produced
Oil gas enters tower amount and enters that tower temperature degree is unstable into fractionating column, negative so as to cause the material of fractionating column matched with delayed coking drums
Lotus and thermic load are unstable, keep the operation of fractionating column more difficult to control.
Problem more rambunctious is operated for producing needle coke by utilizing delay coking alternating temperature transformation, there are some scholars to propose non-delayed
The method of coking production needle coke.Such as a kind of production method of needle coke of Chinese patent CN200810228427.1(), China specially
A kind of sharp process of autoclave coking production needle coke of CN200910012506.3(), Chinese patent CN201110353712.8
A kind of (process that a kind of autoclave coking prepares needle coke), Chinese patent CN201310496046.2 (autoclave coking production
The method of needle coke) the autoclave coking process that is all made of non-delayed coking prepares needle coke, it can be achieved that needle coke Coking Process
The more accurate control of pressure and temperature, but the needle coke that above method processing is prepared is only green coke, non-calcinated coke, and not right
Oil gas during green coke generates is effectively treated.
Summary of the invention
To solve technical problem of the existing technology, the present invention provides calcine one using coking using refined bitumen
Chemical industry skill produces the process of high quality needle-type coke, and refined bitumen is calcined integral process by coking and is converted by the present invention
The needle coke of high microsteping acicular texture, while generated heat in the technique is efficiently used, and by adding oil gas temporary storage tank
Mode realize the quiet run to coking fractional distillation column, there are the multiple benefits such as environmental protection, economy.
To achieve the above object, the technical scheme adopted by the invention is as follows: integration is calcined in a kind of coking of refined bitumen
Prepare needle coke technique, comprising the following steps:
One, air in inert gas or coking gas displacement furnace body is passed through into coking calcining all-in-one oven；
Two, it is injected after refined bitumen being preheated to 200 DEG C -350 DEG C in coking calcining all-in-one oven, refined bitumen injected slurry volume amount is
The 1/4-4/5 of furnace body volume；
Three, after injecting refined bitumen into coking calcining all-in-one oven, it is 350 DEG C -500 DEG C that integrated furnace temperature is calcined in control coking,
Furnace pressure alternating temperature transformation in 0.1MPa-0.6MPa operates, and green coke is made in calcining all-in-one oven in refined bitumen；
Four, generated oil gas is directly discharged into oil gas temporary storage tank from coking calcining all-in-one oven in refined bitumen coking,
It is fractionated to obtain combustion gas and coking oil product by being delivered to fractionating column after oil gas temporary storage tank temperature-adjustment pressure-adjustment again；
Five, after making burnt process, oil gas remaining in the all-in-one oven indifferent gas for being preheated to 400 DEG C -500 DEG C is calcined into coking
After body displacement completely, coking calcining all-in-one oven is to slowly warm up to 1450 DEG C -1500 DEG C and retains 1h-5h, is subsequently cooled to 60
DEG C hereinafter, coke is removed from furnace body up to the burnt finished product that burns.The life that all-in-one oven is used for next period needle coke is calcined in coking
It produces.
Generated escaping gas can be used for heating furnace body fuel to coking calcining all-in-one oven in combustion, cooled
Generated heat can be used for the heating and heat preservation of preheating material pitch and inert gas and oil gas temporary storage tank in journey.
Refined bitumen is coal tar pitch, the coal measures mink cell focus, stone that quinoline insolubles content is used to produce needle coke lower than 0.5%
Oil asphalt, petroleum heavy oil, coal measures raw material and petroleum raw material blend, or the copolymerization for coal measures raw material and petroleum raw material
Object.
Coking calcining all-in-one oven is that temperature-changeable transformation operates and can rise to 1500 DEG C from room temperature with temperature-control pressure-control device
Reacting furnace-e/or, furnace body is equipped with upper cover and lower cover, and lower part is equipped with air inlet and feed inlet.
Replacing inert gas used in air in furnace body is any gas not reacted in reaction system, such as nitrogen
Or argon gas；The coking gas is coking gas caused by fractionating column in this technique, and main component is light hydrocarbon gas.
Refined bitumen is passed through inert gas or coking oil gas into furnace body in the 1-5h in coking calcining all-in-one oven before coking,
The linear velocity of gas is 0.5m/s-30m/s, duration of ventilation 1min-60min.
Oil gas temporary storage tank is the tank body of temperature controllable, controllable pressing pressure, and control oil gas temporary storage tank temperature is in this technique
400-500 DEG C, pressure 0.1-2MPa.
Fractionating column is fractionating column provisioned in Conventional delayed coking unit.
Compared with prior art, the present invention specifically having the beneficial effect that:
One, present invention process method simple possible, it is easy to accomplish industrialization production provides a kind of new work for the production of needle coke
Skill.
Two, the present invention is easy to be precisely controlled coking and calcination condition, can produce the needle coke product of high quality.
Three, the quiet run of the achievable coking fractional distillation column of the present invention.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Closing specific embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment one
Nitrogen, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.1% coal tar pitch, injection coking is calcined in all-in-one oven after the coal tar pitch that quinoline insolubles content is 0.1% is preheated to 350 DEG C,
Refined bitumen injected slurry volume amount is the 4/5 of furnace body volume.After injecting refined bitumen, integrated furnace body pressure is calcined in control coking
0.5MPa, while 400 DEG C are risen to 5 DEG C/min heating rate, in 400 DEG C of constant temperature 4h；Then furnace body is controlled with 0.5 DEG C/min liter
Warm rate from 400 DEG C rise to 450 DEG C after, furnace body pressure is adjusted to 0.3MPa, in 450 DEG C of constant temperature 5h；Then by furnace body pressure
It adjusts to 0.1MPa, nitrogen is passed through by lower portion of furnace body air inlet, the linear velocity of nitrogen is 0.5m/s, duration of ventilation 60min.It is logical
In nitrogen procedure control furnace body with 1 DEG C/min heating rate from 450 DEG C rise to 480 DEG C after, after 480 DEG C of constant temperature 3h, purification drip
Green coke is made in calcining all-in-one oven in blueness.Oil gas caused by during pitch coking is directly discharged into from coking calcining all-in-one oven
Oil gas temporary storage tank, 450 DEG C, pressure 0.5MPa of oil gas temporary storage tank temperature, then by oil gas temporary storage tank by oil-gas transportation to fractionating column into
Row fractionation obtains combustion gas and coking oil product.After coking, coking is calcined into all-in-one oven remaining oil gas with being preheated to
After 450 DEG C of nitrogen displacement completely, coking calcining all-in-one oven is to slowly warm up to 1450 DEG C with 5 DEG C/min heating rate and is stopped
1h is subsequently cooled to 60 DEG C hereinafter, coke is removed from furnace body up to calcined coke finished product.Coking calcines all-in-one oven for next
The production of period needle coke.Generated escaping gas is used for the fuel of heating furnace body, institute in cooling procedure in calcination process
The heat of generation is used for the heating and heat preservation of preheating material and inert gas and oil gas temporary storage tank.
Embodiment two
Argon gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.2% black petroleum products, injection coking calcining one after the black petroleum products that quinoline insolubles content is 0.2% is preheated to 200 DEG C
In furnace, black petroleum products injected slurry volume amount is the 1/2 of furnace body volume.After injecting turpentole heavy oil, all-in-one oven is calcined in control coking
Furnace body pressure 0.6MPa, while 380 DEG C are risen to 3 DEG C/min heating rate, in 380 DEG C of constant temperature 6h；Then furnace body is controlled with 1
DEG C/min heating rate from 380 DEG C rise to 430 DEG C after, furnace body pressure is adjusted to 0.1MPa, is passed through by lower portion of furnace body air inlet
Coking gas, the linear velocity of gas are 5m/s, duration of ventilation 15min.Furnace body is controlled during logical coking gas with 1 DEG C/min heating speed
Rate from 430 DEG C rise to 470 DEG C after, after 470 DEG C of constant temperature 4h, turpentole heavy oil calcining all-in-one oven in green coke is made.Purification
Generated oil gas is directly discharged into oil gas temporary storage tank, oil gas temporary storage tank from coking calcining all-in-one oven in black petroleum products coking
400 DEG C of temperature, pressure 0.2MPa, then be fractionated oil-gas transportation to fractionating column by oil gas temporary storage tank to obtain combustion gas and coking oil
Product.After making burnt process, after oil gas remaining in coking calcining all-in-one oven is replaced completely with the nitrogen for being preheated to 430 DEG C,
Coking calcining all-in-one oven is to slowly warm up to 1450 DEG C with 10 DEG C/min heating rate and stops 5h, be subsequently cooled to 60 DEG C with
Under, coke is removed from furnace body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.It forges
Escaping gas caused by during burning is used for the fuel of heating furnace body, and generated heat is for pre- in furnace body cooling procedure
The heating and heat preservation of hot charge and inert gas or coking oil gas and oil gas temporary storage tank.
Embodiment three
Coking gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.05% asphalt, injection coking calcining one after the asphalt that quinoline insolubles content is 0.05% is preheated to 300 DEG C
In body furnace, black petroleum products injected slurry volume amount is the 3/4 of furnace body volume.After injecting turpentole pitch, control coking calcining one
Furnace body pressure 0.4MPa, while 410 DEG C are risen to 2 DEG C/min heating rate, in 410 DEG C of constant temperature 5h；Then furnace body is controlled with 1
DEG C/min heating rate from 410 DEG C rise to 460 DEG C after, furnace body pressure is adjusted to 0.1MPa, is passed through by lower portion of furnace body air inlet
Coking gas, the linear velocity of gas are 20m/s, duration of ventilation 10min.Furnace body is controlled during logical coking gas with 8 DEG C/min heating
Rate from 410 DEG C rise to 500 DEG C after, after 500 DEG C of constant temperature 3h, turpentole pitch calcining all-in-one oven in green coke is made.Essence
Generated oil gas is directly discharged into oil gas temporary storage tank from coking calcining all-in-one oven in asphalt coking processed, and oil gas is temporary
420 DEG C of tank temperature degree, pressure 0.3MPa, then be fractionated oil-gas transportation to fractionating column to obtain combustion gas and coking by oil gas temporary storage tank
Oil product.After making burnt process, it is complete with the argon gas displacement for being preheated to 430 DEG C that oil gas remaining in all-in-one oven is calcined into coking
Afterwards, coking calcining all-in-one oven is to slowly warm up to 1500 DEG C with 8 DEG C/min heating rate and stops 2h, be subsequently cooled to 60 DEG C with
Under, coke is removed from furnace body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.It forges
Escaping gas caused by during burning is used for the fuel of heating furnace body, and generated heat is for pre- in furnace body cooling procedure
The heating and heat preservation of hot charge and inert gas or coking oil gas and oil gas temporary storage tank.
Example IV
Coking gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.03% asphalt and the mixture of coal tar pitch, by quinoline insolubles content be 0.03% asphalt and coal tar pitch it is mixed
It closes after object is preheated to 320 DEG C in injection coking calcining all-in-one oven, the mixture injected slurry volume amount of asphalt and coal tar pitch is furnace
The 1/4 of body volume.After injecting the mixture of asphalt and coal tar pitch, integrated furnace body pressure 0.3MPa is calcined in control coking,
420 DEG C are risen to 2 DEG C/min heating rate simultaneously, furnace body pressure is adjusted to 0.2MPa, in 420 DEG C of constant temperature 6h；Then it controls
Furnace body with 3 DEG C/min heating rate from 420 DEG C rise to 470 DEG C after, furnace body pressure is adjusted to 0.1MPa, by lower portion of furnace body air inlet
Mouth is passed through nitrogen, and the linear velocity of gas is 5m/s, duration of ventilation 20min.Furnace body is controlled during logical coking gas with 3 DEG C/min liter
Warm rate from 470 DEG C rise to 490 DEG C after, after 490 DEG C of constant temperature 2h, the mixture of asphalt and coal tar pitch is in calcining all-in-one oven
Green coke is inside made.Generated oil gas is straight from coking calcining all-in-one oven in the mixture coking of asphalt and coal tar pitch
Run in into oil gas temporary storage tank, 400 DEG C, pressure 0.4MPa of oil gas temporary storage tank temperature, then by oil gas temporary storage tank by oil-gas transportation to point
Tower is evaporated to be fractionated to obtain combustion gas and coking oil product.After making burnt process, oil gas remaining in all-in-one oven is calcined into coking and is used
After being preheated to 480 DEG C of nitrogen displacement completely, coking calcining all-in-one oven is to slowly warm up to 1400 DEG C with 1 DEG C/min heating rate
And 1h is stopped, 60 DEG C are subsequently cooled to hereinafter, coke is removed from furnace body up to calcined coke finished product.Coking is calcined all-in-one oven and is used
In the production of next period needle coke.Generated escaping gas is used for the fuel of heating furnace body in calcination process, and furnace body is cold
But heat caused by during is used for heating and the guarantor of preheating material and inert gas or coking oil gas and oil gas temporary storage tank
Temperature.
Embodiment five
Nitrogen, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.1% coal measures mink cell focus, injection coking calcining after the coal measures mink cell focus that quinoline insolubles content is 0.1% is preheated to 300 DEG C
In all-in-one oven, coal measures mink cell focus injected slurry volume amount is the 1/2 of furnace body volume.After injecting coal measures mink cell focus, control coking calcining one
Body furnace body pressure 0.3MPa, while 420 DEG C are risen to 1 DEG C/min heating rate, in 420 DEG C of constant temperature 6h；Then furnace body is controlled
With 5 DEG C/min heating rate from 420 DEG C rise to 460 DEG C after, furnace body pressure is adjusted to 0.15MPa, by lower portion of furnace body air inlet
It is passed through nitrogen, the linear velocity of nitrogen is 1m/s, duration of ventilation 10min.Control furnace body is heated up fast in logical nitrogen procedure with 1 DEG C/min
Rate rises to 500 DEG C from 460 DEG C, and after 500 DEG C of constant temperature 4h, green coke is made in calcining all-in-one oven in coal measures heavy oil asphalt.Coal measures
Generated oil gas is directly discharged into oil gas temporary storage tank from coking calcining all-in-one oven in mink cell focus coking, and oil gas keeps in tank temperature
450 DEG C, pressure 0.5MPa of degree, then be fractionated oil-gas transportation to fractionating column by oil gas temporary storage tank to obtain combustion gas and coking oil
Product.After coking, after oil gas remaining in coking calcining all-in-one oven is replaced completely with the nitrogen for being preheated to 450 DEG C,
Coking calcining all-in-one oven is warming up to 1450 DEG C with 20 DEG C/min heating rate and stops 2h, is subsequently cooled to 60 DEG C hereinafter, will
Coke is removed from furnace body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.It is calcined
Generated escaping gas is used for the fuel of heating furnace body in journey, in cooling procedure generated heat for preheating material and
The heating and heat preservation of inert gas and oil gas temporary storage tank.
Embodiment six
Argon gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.3% coal measures mink cell focus and the mixture of petroleum-derived heavy oil, the coal measures mink cell focus and stone for being 0.3% by quinoline insolubles content
After the mixture of oil system mink cell focus is preheated to 330 DEG C in injection coking calcining all-in-one oven, coal measures mink cell focus and petroleum-derived heavy oil
Mixture injected slurry volume amount be furnace body volume 3/5.After injecting the mixture of coal measures mink cell focus and petroleum-derived heavy oil, control
Integrated furnace body pressure 0.6MPa is calcined in coking, while rising to 410 DEG C with 0.5 DEG C/min heating rate, in 410 DEG C of constant temperature 5h,
Furnace body pressure is adjusted to 0.3MPa；Then control furnace body with 2 DEG C/min heating rate from 410 DEG C rise to 460 DEG C after, by furnace body
Pressure is adjusted to 0.1MPa, is passed through nitrogen by lower portion of furnace body air inlet, the linear velocity of nitrogen is 5m/s, duration of ventilation 15min.It is logical
Furnace body is controlled in nitrogen procedure rises to 490 DEG C from 460 DEG C with 0.5 DEG C/min heating rate, after 490 DEG C of constant temperature 5h, coal measures weight
Green coke is made in calcining all-in-one oven in the mixture of matter oil and petroleum-derived heavy oil.Coal measures mink cell focus and petroleum-derived heavy oil it is mixed
It closes generated oil gas in object coking and is directly discharged into oil gas temporary storage tank, oil gas temporary storage tank temperature from coking calcining all-in-one oven
450 DEG C, pressure 0.5MPa, then be fractionated oil-gas transportation to fractionating column by oil gas temporary storage tank to obtain combustion gas and coking oil product.
It, will be burnt after oil gas remaining in coking calcining all-in-one oven is replaced completely with the nitrogen for being preheated to 450 DEG C after coking
Change calcining all-in-one oven to be warming up to 1450 DEG C with 15 DEG C/min heating rate and stop 1.5h, is subsequently cooled to 60 DEG C hereinafter, by burnt
Charcoal is removed from furnace body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.Calcination process
In generated escaping gas be used for the fuel of heating furnace body, generated heat is for preheating material and lazy in cooling procedure
The heating and heat preservation of property gas and oil gas temporary storage tank.
Embodiment seven
Nitrogen, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.1% coal tar pitch and the mixture of coal measures raw material, by the mixing of coal tar pitch and coal measures raw material that quinoline insolubles content is 0.1%
After object is preheated to 350 DEG C in injection coking calcining all-in-one oven, refined bitumen injected slurry volume amount is the 4/5 of furnace body volume.Injection essence
After pitch processed, integrated furnace body pressure 0.6MPa is calcined in control coking, while rising to 400 DEG C with 5 DEG C/min heating rate,
400 DEG C of constant temperature 4h；Then control furnace body with 0.5 DEG C/min heating rate from 400 DEG C rise to 450 DEG C after, furnace body pressure is adjusted
To 0.6MPa, in 450 DEG C of constant temperature 5h；Then furnace body pressure is adjusted to 0.1MPa, argon gas is passed through by lower portion of furnace body air inlet,
The linear velocity of argon gas is 30m/s, duration of ventilation 1min.Furnace body is controlled during logical argon gas with 1 DEG C/min heating rate from 450 DEG C
After rising to 500 DEG C, after 500 DEG C of constant temperature 3h, green coke is made in calcining all-in-one oven in refined bitumen.It is produced during pitch coking
Raw oil gas is calcined from coking is directly discharged into oil gas temporary storage tank in all-in-one oven, and 400 DEG C, pressure 2MPa of oil gas temporary storage tank temperature, then
Oil-gas transportation to fractionating column is fractionated by oil gas temporary storage tank to obtain combustion gas and coking oil product.It, will be burnt after coking
Change remaining oil gas in calcining all-in-one oven with after being preheated to 400 DEG C of argon gas displacement completely, by coking calcine all-in-one oven with 5 DEG C/
Min heating rate is to slowly warm up to 1450 DEG C and stops 5h, is subsequently cooled to 60 DEG C hereinafter, coke is removed from furnace body to obtain the final product
Calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.Generated volatility gas in calcination process
Body is used for the fuel of heating furnace body, and generated heat is temporary for preheating material and inert gas and oil gas in cooling procedure
The heating and heat preservation of tank.
Embodiment eight
Argon gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.3% asphalt and the mixture of petroleum raw material, quinoline insolubles content is former for 0.3% asphalt and petroleum
After the mixture of material is preheated to 350 DEG C in injection coking calcining all-in-one oven, refined bitumen injected slurry volume amount is the 1/ of furnace body volume
4.After injecting refined bitumen, integrated furnace body pressure 0.1MPa is calcined in control coking, while being risen to 5 DEG C/min heating rate
400 DEG C, in 400 DEG C of constant temperature 4h；Then control furnace body with 0.5 DEG C/min heating rate from 400 DEG C rise to 450 DEG C after, by furnace body
Pressure is adjusted to 0.1MPa, in 450 DEG C of constant temperature 5h；Then furnace body pressure is adjusted to 0.1MPa, by lower portion of furnace body air inlet
It is passed through argon gas, the linear velocity of argon gas is 0.5m/s, duration of ventilation 60min.Furnace body is controlled during logical argon gas with 1 DEG C/min heating
Rate from 450 DEG C rise to 500 DEG C after, after 500 DEG C of constant temperature 3h, refined bitumen calcining all-in-one oven in green coke is made.Pitch coke
Oil gas caused by during changing is calcined from coking is directly discharged into oil gas temporary storage tank in all-in-one oven, 500 DEG C of oil gas temporary storage tank temperature,
Pressure 0.1MPa, then be fractionated oil-gas transportation to fractionating column by oil gas temporary storage tank to obtain combustion gas and coking oil product.Coking
After journey, after oil gas remaining in coking calcining all-in-one oven is replaced completely with the argon gas for being preheated to 500 DEG C, coking is calcined
All-in-one oven is to slowly warm up to 1500 DEG C with 5 DEG C/min heating rate and stops 1h, is subsequently cooled to 60 DEG C hereinafter, by coke from furnace
It is removed in body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.It is produced in calcination process
Raw escaping gas is used for the fuel of heating furnace body, and generated heat is used for preheating material and inert gas in cooling procedure
And the heating and heat preservation of oil gas temporary storage tank.
Embodiment nine
Coking gas, which is passed through, into coking calcining all-in-one oven replaces air in furnace body completely.Refined bitumen is that quinoline insolubles content is
0.4% coal measures raw material and the mixture of petroleum raw material, quinoline insolubles content is former for 0.4% coal measures raw material and petroleum
After the mixture of material is preheated to 280 DEG C in injection coking calcining all-in-one oven, refined bitumen injected slurry volume amount is the 3/ of furnace body volume
5.After injecting refined bitumen, integrated furnace body pressure 0.2MPa is calcined in control coking, while being risen to 5 DEG C/min heating rate
380 DEG C, in 380 DEG C of constant temperature 3.5h；Then control furnace body with 0.5 DEG C/min heating rate from 380 DEG C rise to 450 DEG C after, by furnace
Body pressure is adjusted to 0.1MPa, in 450 DEG C of constant temperature 5h；Then furnace body pressure is adjusted to 0.1MPa, by lower portion of furnace body air inlet
Mouth is passed through coking gas, and the linear velocity of coking gas is 10m/s, duration of ventilation 25min.Controlled during logical coking gas furnace body with 1 DEG C/
Min heating rate from 450 DEG C rise to 500 DEG C after, after 500 DEG C of constant temperature 3h, refined bitumen calcining all-in-one oven in green coke is made.
Oil gas caused by during pitch coking is directly discharged into oil gas temporary storage tank, oil gas temporary storage tank temperature from coking calcining all-in-one oven
500 DEG C, pressure 1MPa, then be fractionated oil-gas transportation to fractionating column by oil gas temporary storage tank to obtain combustion gas and coking oil product.It is burnt
It, will be burnt after oil gas remaining in coking calcining all-in-one oven is replaced completely with the coking gas for being preheated to 500 DEG C after change process
Change calcining all-in-one oven be to slowly warm up to 11480 DEG C with 5 DEG C/min heating rate and stop 2.5h, be subsequently cooled to 60 DEG C hereinafter,
Coke is removed from furnace body up to calcined coke finished product.The production that all-in-one oven is used for next period needle coke is calcined in coking.Calcining
Generated escaping gas is used for the fuel of heating furnace body in the process, and generated heat is used for preheating material in cooling procedure
With the heating and heat preservation of inert gas and oil gas temporary storage tank.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all wrap within the scope of the present invention within mind and principle.
Claims (5)
1. a kind of coking calcining integration system of refined bitumen is for needle coke technique, which comprises the following steps:
One, air in inert gas or coking gas displacement furnace body is passed through into coking calcining all-in-one oven；
Two, it is injected after refined bitumen being preheated to 200 DEG C -350 DEG C in coking calcining all-in-one oven, refined bitumen injected slurry volume amount is
The 1/4-4/5 of furnace body volume；
Three, after injecting refined bitumen into coking calcining all-in-one oven, it is 350 DEG C -500 DEG C that integrated furnace temperature is calcined in control coking,
Furnace pressure alternating temperature transformation in 0.1MPa-0.6MPa operates, and green coke is made in calcining all-in-one oven in refined bitumen；
Four, generated oil gas is directly discharged into oil gas temporary storage tank from coking calcining all-in-one oven in refined bitumen coking,
It is fractionated to obtain combustion gas and coking oil product by being delivered to fractionating column after oil gas temporary storage tank temperature-adjustment pressure-adjustment again；
Five, after making burnt process, oil gas remaining in the all-in-one oven indifferent gas for being preheated to 400 DEG C -500 DEG C is calcined into coking
After body displacement completely, coking calcining all-in-one oven is to slowly warm up to 1450 DEG C -1500 DEG C and retains 1h-5h, is subsequently cooled to 60
DEG C hereinafter, coke is removed from furnace body up to the burnt finished product that burns.
2. a kind of coking calcining integration system of refined bitumen according to claim 1 is for needle coke technique, feature exists
In generated escaping gas is used for heating furnace body fuel, cooling procedure to the coking calcining all-in-one oven in combustion
In generated heat be used for preheating material.
3. a kind of coking calcining integration system of refined bitumen according to claim 2 is for needle coke technique, feature exists
In the refined bitumen is coal tar pitch, the coal measures mink cell focus, petroleum that quinoline insolubles content is used to produce needle coke lower than 0.5%
Pitch, petroleum heavy oil, coal measures raw material and petroleum raw material blend, or the copolymerization for coal measures raw material and petroleum raw material
Object.
4. a kind of coking calcining integration system of refined bitumen according to claim 3 is for needle coke technique, feature exists
In the refined bitumen is passed through inert gas or coking oil into furnace body in the 1h-5h in coking calcining all-in-one oven before coking
Gas, the linear velocity of gas are 0.5m/s-30m/s, duration of ventilation 1min-60min.
5. a kind of coking calcining integration system of refined bitumen according to claim 4 is for needle coke technique, feature exists
In the inert gas is nitrogen or argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374503.XA CN109439353B (en) | 2018-11-19 | 2018-11-19 | Coking and calcining integrated process for preparing needle coke from refined asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374503.XA CN109439353B (en) | 2018-11-19 | 2018-11-19 | Coking and calcining integrated process for preparing needle coke from refined asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109439353A true CN109439353A (en) | 2019-03-08 |
| CN109439353B CN109439353B (en) | 2020-10-27 |
Family
ID=65553172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374503.XA Active CN109439353B (en) | 2018-11-19 | 2018-11-19 | Coking and calcining integrated process for preparing needle coke from refined asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109439353B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200203A (en) * | 2023-05-06 | 2023-06-02 | 山东中阳新材料科技股份有限公司 | Calcining method of low-specific-resistance calcined petroleum coke |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3147677C2 (en) * | 1980-12-05 | 1986-02-27 | Maruzen Petrochemical Co., Ltd., Tokio/Tokyo | Delayed coking method |
| CN1676575A (en) * | 2004-03-31 | 2005-10-05 | 中国石油化工股份有限公司 | Delayed coking method for increasing coke strength |
| CN203440308U (en) * | 2013-09-12 | 2014-02-19 | 山西宏特煤化工有限公司 | Device for preparing needle coke by using maltha as raw material |
| CN105733630A (en) * | 2014-12-06 | 2016-07-06 | 中国石油化工股份有限公司 | Method and apparatus for production of homogeneous needle coke |
| CN107694552A (en) * | 2017-11-07 | 2018-02-16 | 西北大学 | A kind of technique that coal-based needle coke is produced as raw material using middle coalite tar pitch |
-
2018
- 2018-11-19 CN CN201811374503.XA patent/CN109439353B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3147677C2 (en) * | 1980-12-05 | 1986-02-27 | Maruzen Petrochemical Co., Ltd., Tokio/Tokyo | Delayed coking method |
| CN1676575A (en) * | 2004-03-31 | 2005-10-05 | 中国石油化工股份有限公司 | Delayed coking method for increasing coke strength |
| CN203440308U (en) * | 2013-09-12 | 2014-02-19 | 山西宏特煤化工有限公司 | Device for preparing needle coke by using maltha as raw material |
| CN105733630A (en) * | 2014-12-06 | 2016-07-06 | 中国石油化工股份有限公司 | Method and apparatus for production of homogeneous needle coke |
| CN107694552A (en) * | 2017-11-07 | 2018-02-16 | 西北大学 | A kind of technique that coal-based needle coke is produced as raw material using middle coalite tar pitch |
Non-Patent Citations (1)
| Title |
|---|
| 北京化工学院等: "《化工仪表及自动化（工业类专业适用）》", 31 July 1981, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200203A (en) * | 2023-05-06 | 2023-06-02 | 山东中阳新材料科技股份有限公司 | Calcining method of low-specific-resistance calcined petroleum coke |
| CN116200203B (en) * | 2023-05-06 | 2023-07-21 | 山东中阳新材料科技股份有限公司 | Calcining method of low-specific-resistance calcined petroleum coke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109439353B (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104560104B (en) | A kind of method producing needle coke | |
| CN104560152B (en) | Coking process for production of needle coke | |
| CN201883063U (en) | External-heating tank-type formed coke carbonizing furnace | |
| CN104129774B (en) | Behavior of High-sulfur Petroleum Coke chemical desulfurization calcining comprehensive utilization process | |
| CN109370642A (en) | A kind of delay coking process being used to prepare coal-based needle coke | |
| CN201314783Y (en) | Tank-type calcining furnace | |
| CN102534190A (en) | Three-section type heating and roasting method for refining vanadium pentoxide | |
| CN109439353A (en) | A kind of coking calcining integration system of refined bitumen is for needle coke technique | |
| CN104877707B (en) | The hydrogenation series methods and its design method and purposes of a kind of Multiple Optimization | |
| CN104593015A (en) | Formcoke refining method and device thereof | |
| CN203715283U (en) | System of producing graphite electrode | |
| CN111486702A (en) | Needle coke two-stage calcination coupling flue gas internal circulation method and device | |
| US20230272284A1 (en) | Coking system and coking process | |
| CN106544045B (en) | A kind of mesophase pitch prepares the continuous processing of high-quality needle coke | |
| CN208857205U (en) | Expansion cracking proof biomass cracking carbide furnace | |
| CN105623721B (en) | A kind of method for preparing needle-shape coke raw material | |
| CN104661337B (en) | A kind of resistance material and using method thereof | |
| CN113004924B (en) | Needle coke production process for ultrahigh-power graphite electrode joint | |
| CN105950206B (en) | It is a kind of to simulate the device and method that the quick coking of carbonaceous macromolecular delayed coking prepares coking | |
| CN108728139A (en) | A kind of pyrolysis of coal nitrogen-free process and system | |
| CN109777458A (en) | A kind of preparation method of high-quality needle coke | |
| CN203440306U (en) | Needle coke production device | |
| CN106833705A (en) | A kind of technique of supercritical extract slurry oil One-step production high intensity oil system needle coke | |
| CN206787276U (en) | Can-type calcine furnace | |
| CN208857216U (en) | A kind of process units of negative electrode material 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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Shaoqing Inventor after: Kang Hefei Inventor before: Guo Shaoqing Inventor before: Zhao Liangfu Inventor before: Wang Lei Inventor before: Feng Shuo |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |