The Production method of coal pitch of the low quinoline insolubles of high coking value
Technical field
The present invention relates to the Production method of coal pitch of a kind of low quinoline insolubles of high coking value, belong to coal tar asphalt deep
Processing high added value new carbon production field.
Background technology
High-purity dipping agent bitumen is mainly used in ultra high power graphite electrode, high-end electrical carbon product, " high-purity, high-strength
Degree, high density " dipping of the high-end material with carbon element such as special graphite, carbon composite and the iron and steel blast furnace mouth of a river, slide plate produces, it is possible to
As high-purity natural graphite cladding Colophonium, the raw material of the production product such as needle coke and high softening point bitumen, to be applied to New Type of Carbon
The numerous areas such as material, particularly high power, ultra high power graphite electrode, need high-purity, high coking value, low quinoline insolubles
Asphaltic products.According to low isoquinoline level of the market demand such as current state aluminium metallurgy industry, graphite electrode industry and high-end electrical carbon industries
Seeing with the high-purity Colophonium situation of high coking value, high-purity dipping agent bitumen market prospect is very good.
The business unit producing Colophonium and research and development Colophonium at present is all producing as a trial, but it is multiple to there is production procedure technique
Miscellaneous, production cost is high, and the quinoline insolubles purity of product does not reaches requirement, and index is higher, and the weak point such as coking value is low,
Its reason is: one is the raw material selected and processing step existing problems, and two is not have supporting consersion unit, and three is to produce
In journey, environmental issue and production cost are higher.
Summary of the invention
For above-mentioned prior art, the invention provides the producer of the coal tar pitch of a kind of low quinoline insolubles of high coking value
Method, can industrially produce the high-quality high-purity dipping agent bitumen product of low quinoline insolubles, high coking value, to meet current city
The raw produce that on field, aluminium metallurgy industry, graphite electrode industry, high-end electrical carbon industry and negative pole covering material industry etc. are badly in need of.
The present invention is achieved by the following technical solutions:
A kind of Production method of coal pitch of the low quinoline insolubles of high coking value, as follows: with quinoline insolubles be 0.05%, coking
Value be 47% high-purity dipping agent bitumen (" high-purity dipping agent bitumen " is conventional products of the prior art, can pass through market
It is commercially available) it is raw material, first pass through self-cleaning reactor, fully react at 280 DEG C~300 DEG C, blowing air aoxidizes;Pass through again
Membrane evaporator, devolatilization at 260 DEG C~300 DEG C, i.e. obtain the coal tar pitch of the low quinoline insolubles of coking value, its index
For: softening point is 115 DEG C~125 DEG C, and quinoline insolubles content typically increases quickly at 0.5%~2%(quinoline insolubles, this
Its growth of bright control is too fast), softening point is 115 DEG C~125 DEG C, and coking value is 55~65%, and toluene insolubles is 18%~40%,
< 0.03%, the rheological characteristic of Colophonium is good, and the β resin of Colophonium is high, and caking property is good for ash.
The structure of described self-cleaning reactor is: include retort and quill shaft, and quill shaft runs through retort, quill shaft two
End is provided with power set (motor);Retort is provided with charging aperture, pushing spiral device, air add entrance and vacuum orifice, enters
Material mouth is connected with Colophonium polymeric kettle, and junction is provided with feed pump;Quill shaft is provided with multiple blade, and retort inwall is provided with many
Individual blade cleaning doctor;It is equipped with the hollow channel for circulating heat conduction oil in quill shaft, blade, blade cleaning doctor.Its work
As flow process it is: dipping agent bitumen and air add entrance by charging aperture and air respectively and enter retort, at the band of power set
Under Dong, quill shaft and blade rotate, thus stir dipping agent bitumen (increasing Colophonium and the contact area of air), and blade cleaning is scraped
The effect of cutter is: clear up the Colophonium of residual on blade;Heating (heating is realized by circulating heat conduction oil in hollow channel
To 300 DEG C);Unreacted gas thoroughly is extracted out by vacuum orifice, and product is released by pushing spiral device.
The structure of described membrane evaporator is: include flash vessel cylinder and drive shaft, and drive shaft runs through flash vessel cylinder, drives
End shaft is provided with flash vessel motor;Flash vessel cylinder is provided with Colophonium import, asphalt outlet, vacuum pumping opening, nitrogen addition
Mouth, thermocouple insert port and Colophonium discharging hole, drive shaft is provided with multiple scraper plate;The shell of flash vessel cylinder is provided with for following
The hollow channel of ring conduction oil.Its workflow is: Colophonium is entered flash vessel cylinder by Colophonium import, is passed through air and nitrogen,
By vacuum pumping opening evacuation, drive lower scraping plate to rotate, so that Colophonium is at flash vessel cylinder at flash vessel motor simultaneously
Inwall forms thin film (increasing the volatilization area of volatilizable component in Colophonium);The complete Colophonium of flash distillation is taken out by asphalt outlet
Go out;By heat-conducting oil heating;Thermocouple insert port inserts thermocouple, for point for measuring temperature.
The structure of the most detailed description of the present invention, operation principle etc., be routine techniques means of the prior art (the most dynamic
Power apparatus, pushing spiral device, how by circulating heat conduction oil heating etc.), repeat no more.
The Production method of coal pitch of the low quinoline insolubles of high coking value of the present invention, using high-purity coal tar pitch is raw material,
Coal asphalt product is prepared through oxidation polymerization-abjection volatile matter method, the equipment cleaning reaction used by two-stage reactor
Device and membrane evaporator, technique is simple, environmental protection low stain, and product yield is high.The invention have the advantages that
(1) raw materials used abundant, low price.
(2) produce used by equipment belong to independent research, self-cleaning reactor and membrane evaporator and be applied to light group
Point.
(3) product obtained by the method for the present invention, index is: softening point is 115 DEG C~125 DEG C, quinoline insolubles
Content is 0.5%~2%, and softening point is 115 DEG C~125 DEG C, and coking value is 55~65%, and toluene insolubles is 18%~40%, ash
< 0.03%, the rheological characteristic of Colophonium is good, and the β resin of Colophonium is high, and caking property is good, is far superior to product of the prior art (existing skill
Like product in art, softening point is about 120 DEG C, quinoline insolubles content about 10%, coking value about 58%, toluene
Insoluble matter about 30%, ash about 0.5%).The product that the present invention obtains can meet ultra high power graphite electrode, height completely
Hold electrical carbon product, " high-purity, high intensity, high density " special graphite, carbon composite and the iron and steel blast furnace mouth of a river, slide plate contour
The dipping of end material with carbon element produces, it is also possible to as high-purity natural graphite cladding Colophonium, produce needle coke and high softening point bitumen etc.
The raw material of product, is applied to the numerous areas such as new carbon.
(4) production technology is simple, and production cost is low, environmental protection low stain.
Accompanying drawing explanation
The structural representation of Fig. 1: self-cleaning reactor.
The structural representation of Fig. 2: membrane evaporator.
Wherein, 1, retort;2, quill shaft;3, power set;4, charging aperture;5, pushing spiral device;6, air adds
Mouthful;7, vacuum orifice;8, Colophonium polymeric kettle;9, feed pump;10, blade;11, blade cleaning doctor;12, hollow channel;13, dodge
Steaming device cylinder;14, drive shaft;15, flash vessel motor;16, Colophonium import;17, asphalt outlet;18, vacuum pumping opening;19, nitrogen
Gas adds entrance;20, thermocouple insert port;21, Colophonium discharging hole;22, scraper plate.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Instrument involved in following embodiment, reagent, material etc., unless otherwise noted, be in prior art existing
Conventional instrument, reagent, material etc., can be either commercially available by regular.Experimental technique involved in following embodiment, inspection
Survey methods etc., unless otherwise noted, are existing normal experiment method in prior art, detection method etc..
Embodiment 1 prepares the coal tar pitch of the low quinoline insolubles of high coking value
High-purity impregnating agent coal tar pitch being first passed through self-cleaning reactor, fully reacts at a temperature of 280 DEG C, vacuum is
0.02MPa, rotating speed is 200r/min, and air capacity is 2m3H, carries out deviating from light component in self-cleaning reactor.From automatically cleaning
Reactor Colophonium out enters membrane evaporator, carries out deviating from light component volatilization and divides, and temperature is 260 DEG C, and vacuum is
0.02MPa, rotating speed is 200r/min, and nitrogen amount is 2m3H, air capacity is 1m3H, thus it is good to obtain high coking value rheological characteristic
The coal tar pitch of low quinoline insolubles, after testing, softening point is 120 DEG C, quinoline insolubles content 2.0%, coking value 60%, first
Benzene insoluble 38%, ash 0.03%.
The structure of described self-cleaning reactor is: as it is shown in figure 1, include retort and quill shaft, quill shaft runs through reaction
Tank, quill shaft two ends are provided with power set (motor);Retort is provided with charging aperture, pushing spiral device, air add entrance and
Vacuum orifice, charging aperture is connected with Colophonium polymeric kettle, and junction is provided with feed pump;Quill shaft is provided with multiple blade, retort
Inwall is provided with multiple blade cleaning doctor;It is equipped with in circulating heat conduction oil in quill shaft, blade, blade cleaning doctor
Empty passage.Its workflow is: dipping agent bitumen and air add entrance by charging aperture and air respectively and enter retort, dynamic
Under the drive of power apparatus, quill shaft and blade rotate, thus stir dipping agent bitumen (increasing Colophonium and the contact area of air),
The effect of blade cleaning doctor is: clear up the Colophonium of residual on blade;Real by circulating heat conduction oil in hollow channel
Now heating (being heated to 300 DEG C);Unreacted gas thoroughly is extracted out by vacuum orifice, and product is pushed away by pushing spiral device
Go out.
The structure of described membrane evaporator is: as in figure 2 it is shown, include flash vessel cylinder and drive shaft, drive shaft runs through sudden strain of a muscle
Steaming device cylinder, drive shaft two ends are provided with flash vessel motor;Flash vessel cylinder is provided with Colophonium import, asphalt outlet, vacuum suction
Mouth, nitrogen add entrance, thermocouple insert port and Colophonium discharging hole, and drive shaft is provided with multiple scraper plate;The shell of flash vessel cylinder
It is provided with the hollow channel for circulating heat conduction oil.Its workflow is: Colophonium is entered flash vessel cylinder by Colophonium import, is passed through
Air and nitrogen, by vacuum pumping opening evacuation, drive lower scraping plate to rotate, so that Colophonium exists at flash vessel motor simultaneously
Flash vessel cylinder inboard wall forms thin film (increasing the volatilization area of volatilizable component in Colophonium);The complete Colophonium of flash distillation is by dripping
Blue or green outlet is extracted out;By heat-conducting oil heating.
Embodiment 2 prepares the coal tar pitch of the low quinoline insolubles of high coking value
High-purity impregnating agent coal tar pitch being first passed through self-cleaning reactor, fully reacts at a temperature of 280 DEG C, vacuum is
0.02MPa, rotating speed is 200r/min, and air capacity is 3m3H, carries out deviating from light component in self-cleaning reactor.From automatically cleaning
Reactor Colophonium out enters membrane evaporator, carries out deviating from light component volatilization and divides, and temperature is 260 DEG C, and vacuum is
0.02MPa, rotating speed is 200 r/min, and nitrogen amount is 2m3H, air capacity is 1m3H, thus it is good to obtain high coking value rheological characteristic
The coal tar pitch of low quinoline insolubles, after testing, softening point is 122 DEG C, quinoline insolubles content 1.8%, coking value 61%, first
Benzene insoluble 39%, ash 0.028%.
Embodiment 3 prepares the coal tar pitch of the low quinoline insolubles of high coking value
High-purity impregnating agent coal tar pitch being first passed through self-cleaning reactor, fully reacts at a temperature of 280 DEG C, vacuum is
0.02MPa, rotating speed is 300r/min, and air capacity is 4m3H, carries out deviating from light component in self-cleaning reactor.From automatically cleaning
Reactor Colophonium out enters membrane evaporator, carries out deviating from light component volatilization and divides, and temperature is 260 DEG C, and vacuum is
0.02MPa, rotating speed is 200 r/min, and nitrogen amount is 2m3H, air capacity is 1m3H, thus it is good to obtain high coking value rheological characteristic
The coal tar pitch of low quinoline insolubles, after testing, softening point is 125 DEG C, quinoline insolubles content 1.95%, coking value 62%,
Toluene insolubles 40%, ash 0.03%.
Embodiment 4 prepares the coal tar pitch of the low quinoline insolubles of high coking value
High-purity impregnating agent coal tar pitch being first passed through self-cleaning reactor, fully reacts at a temperature of 280 DEG C, vacuum is
0.02MPa, rotating speed is 200 r/min, and air capacity is 2m3H, carries out deviating from light component in self-cleaning reactor.From automatically cleaning
Reactor Colophonium out enters membrane evaporator, carries out deviating from light component volatilization and divides, and temperature is 280 DEG C, and vacuum is
0.04MPa, rotating speed is 200, and nitrogen amount is 4m3H, air capacity is 4m3H, thus obtain the low quinoline that high coking value rheological characteristic is good
The coal tar pitch of insoluble matter, after testing, softening point is 125 DEG C, quinoline insolubles content 2.0%, coking value 62%, toluene insoluble
Thing 41%, ash 0.03%.
Embodiment 5 prepares the coal tar pitch of the low quinoline insolubles of high coking value
High-purity impregnating agent coal tar pitch being first passed through self-cleaning reactor, fully reacts at a temperature of 280 DEG C, vacuum is
0.04MPa, rotating speed is 200r/min, and air capacity is 2m3H, carries out deviating from light component in self-cleaning reactor.From automatically cleaning
Reactor Colophonium out enters membrane evaporator, carries out deviating from light component volatilization and divides, and temperature is 260 DEG C, and vacuum is
0.02MPa, rotating speed is 200, and nitrogen amount is 2m3H, air capacity is 3m3H, thus obtain the low quinoline that high coking value rheological characteristic is good
The coal tar pitch of insoluble matter, after testing, softening point is 119 DEG C, and quinoline insolubles content is 1.85%, and coking value is 60%, and toluene is not
Molten thing 39.5%, ash 0.03%.