CN206887030U - A kind of Existing in Improved Pitch Production System - Google Patents
A kind of Existing in Improved Pitch Production System Download PDFInfo
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- CN206887030U CN206887030U CN201720715559.1U CN201720715559U CN206887030U CN 206887030 U CN206887030 U CN 206887030U CN 201720715559 U CN201720715559 U CN 201720715559U CN 206887030 U CN206887030 U CN 206887030U
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Abstract
It the utility model is related to a kind of Existing in Improved Pitch Production System, the pitch entrance connection material asphalt conveyance conduit of flash distillation modification reactor top flash column, the oil gas extraction mouth connection oil gas condensation cooler of flash column；The boiler tube entrance of the asphalt outlet connection tubular heater one of bottom reactor, the pitch entrance of the coil outlet connecting secondary modification reactor of tubular heater one；The asphalt delivery pipeline one of the upstream of one connecting pipe formula heating furnace of asphalt outlet one of secondary modification reactor, another way connect the pitch entrance of fractionating column；The oil gas entrance of the oil gas extraction mouth connection fractionating column bottom of secondary modification reactor；The oil gas extraction mouth connection oil gas condensation cooler of fractionating column, the modified coal tar pitch extraction mouth connection modified coal tar pitch of fractionating column send pipeline outside.The utility model can effectively control α components and β component growing amounts using double kettle two-step reaction methods, and product quality is controllable；Simple for process, energy-conserving and environment-protective, and it is applied to various asphalt stocks.
Description
Technical field
Asphalt production technical field is the utility model is related to, more particularly to one kind is applied to various asphalt stocks and energy-saving ring
The Existing in Improved Pitch Production System of guarantor.
Background technology
The pitch of general generation about 50%~60%, belongs to the bulk product of tar production, adds during coal tar processing
Work scale is bigger, and bituminous production is more.Modified coal tar pitch is the major downstream product of current pitch, is mainly used in aluminum electrolysis industry life
Prebaked anode is produced, prepares Battery Baton or binders for electrodes.
Domestic production modified coal tar pitch uses autoclave pyrocondensation polymerizing technology mostly at present.The technique using mid temperature pitch as raw material,
In the direct-fired reactor of heating furnace, by controlling certain reaction time and appropriate reaction temperature, reach pitch
The purpose of modification.Because heating surface is reactor outer surface, in order to reach good mass-and heat-transfer effect, need to set in reactor
Put agitator, be restricted the volume of reactor, therefore, in order to reach the suitable reaction time, generally require using two to
Three kettle serial operations.Further, since stirrer seal problem under high temperature, modification reaction typically uses synthesis under normal pressure.Autoclave pyrocondensation
The technological process of polymerizing technology is short, simple for process；Its shortcoming is the easily coking of equipment and pipeline, reacts poor controllability, operation
It is very inconvenient, uneven, poor product quality is heated in reactor, is limited by kettle volume, the designed capacity of each system is limited.
The shortcomings that to improve above-mentioned technique, there is the modified coal tar pitch technique of diamond heating, such as add from what France introduced
The double kettle stripping flash process of twin furnace are pressed, also there is single stove one-pot stripping flash process of the country etc..
The double kettle twin furnaces of pressurization strip flash process using mid temperature pitch as raw material, and pitch heating is carried out in tubular heater,
Then reacted in reactor.Reaction is carried out in two steps, and is compressive reaction, flashes stripping after reaction in stripper.
The advantages of technique is to use two-step reaction, can effectively control α-component and β-component growing amount, and product quality is controllable；Pressurization is anti-
Should have beneficial to β-resin generation, improve coking value；Pitch and oil product are separated using vaporizing extract process, are advantageous to softening point adjustment；Shortcoming
Pitch easy coking when being pressurization modification reaction, energy consumption are also high；Vaporizing extract process, which separates pitch and oil product, can also produce a large amount of Wastes
Water.
Single stove one-pot stripping flash process is also using mid temperature pitch as raw material, and pitch heating is carried out in tubular heater,
Then reacted in reactor, a step completes reaction, is compressive reaction.Stripping is flashed after reaction in stripper.The work
The advantages of skill is single step reaction, and technological process is short, and energy consumption is relatively low, and compressive reaction is advantageous to β-resin generation, improves coking
Value.Shortcoming is that control requirement of the single step reaction to temperature and time is higher, the difficult control of product quality；Pitch is separated using vaporizing extract process
And oil product, it can equally produce a large amount of technique waste waters.
To sum up, it is domestic at present also without a kind of more perfect, suitable for various asphalt stocks and energy-conserving and environment-protective, production
The excellent Existing in Improved Pitch Production System of quality.
The content of the invention
The utility model provides a kind of Existing in Improved Pitch Production System, using double kettle two-step reaction methods, can effectively control
α-component and β-component growing amount, product quality are controllable；Simple for process, energy-conserving and environment-protective, and it is former suitable for various pitches
Material.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of Existing in Improved Pitch Production System, including flash distillation modification reactor, tubular heater first and second modify reactor and
Fractionating column；The flash distillation modification reactor is made up of the flash column on the top being connected and the reactor of bottom, the drip of flash column
Blue or green entrance connects material asphalt conveyance conduit, the top oil gas extraction mouth connection oil gas condensation cooler of flash column；Reactor bottom
The boiler tube entrance of the asphalt outlet connection tubular heater one in portion, the coil outlet connecting secondary modification reaction of tubular heater one
The pitch entrance on kettle top；The bottom asphalt outlet of secondary modification reactor is divided into two-way, passes through asphalt delivery pipeline two all the way
Connect the pitch entrance in the middle part of fractionating column, the asphalt delivery pipeline one of another boiler tube inlet upstream of connecting pipe formula heating furnace one；
The oil gas entrance of oil gas extraction mouth connection fractionating column bottom at the top of secondary modification reactor；Oil gas extraction mouth at the top of fractionating column
Oil gas condensation cooler is connected, the modified coal tar pitch extraction mouth connection modified coal tar pitch of fractionation column base sends pipeline outside.
Also include tubular heater two, the boiler tube entrance connection asphalt delivery pipeline one of tubular heater two, coil outlet
The material asphalt conveyance conduit of the flash column pitch inlet upstream on connection flash distillation modification reactor top.
Pitch circulating pump is set respectively on the asphalt delivery pipeline one and asphalt delivery pipeline two.
The modified coal tar pitch, which is sent outside, sets modified coal tar pitch pump and modified coal tar pitch cooler on pipeline.
The fractionating column top sets side line flash distillation oil circulation pipe, flashes and flash distillation oil cooler is set in oil circulation pipe and is followed
Ring flashes oil pump.
The oil gas vent connection oil-water separation tank of the oil gas condensation cooler, the flash distillation oil export connection of oil-water separation tank
The flash distillation oil circulation pipe of fractionating column side line, the incoagulable gas outlet connection vacuum system of oil-water separation tank.
Compared with prior art, the beneficial effects of the utility model are：
1) technological process is short, and simple and easy；
2) negative pressure upgrading operation is used, reduces reaction temperature, can effectively reduce the possibility of equipment and pipeline coking；
3) by controlling reaction time and reaction temperature, β-resin content and the coking of asphaltic products can be effectively improved
Value, makes the product quality of modified coal tar pitch controllable；
4) carried out respectively in 2 reactors using double kettle two-step reactions, β-modification and α-modification, ensure that modification reaction
Manipulation flexibility, can meet product quality variation require；
5) the increase flash distillation function before first step polycondensation reaction, can meet the requirement of diversification of feedstock；
6) using the technique of fractionating column separating oil and pitch, separative efficiency can both be improved；Also avoid producing largely simultaneously
Technique waste water, energy-conserving and environment-protective；
7) by carrying out rational deployment and design to tube furnace, the double kettle techniques of single stove can be achieved.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Existing in Improved Pitch Production System described in the utility model.
In figure：1. flash distillation modification 2. 2 tubular heaters of 31. tubular heater of modification reactor 1 of reactor
The oil of 2 4. pitch circulating pump, 5. fractionating column, 6. modified coal tar pitch pump, 7. modified coal tar pitch cooler, 8. oil gas condensation cooler 9.
The circulation flash distillation oil pump 11. of water separating tank 10. flashes oil cooler
A. material asphalt B. modified coal tar pitches C. incoagulable gas D. flash oils
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of Existing in Improved Pitch Production System described in the utility model, including flash distillation modification reactor 1, tubular type
Heating furnace 1, secondary modification reactor 2 and fractionating column 5；The flash distillation modification reactor 1 is by the flash column on the top being connected
And the reactor composition of bottom, the pitch entrance connection material asphalt conveyance conduit of flash column, the top oil gas extraction of flash column
Mouth connection oil gas condensation cooler 8；The boiler tube entrance of the asphalt outlet connection tubular heater 1 of reactor bottom, tubular type add
The pitch entrance on coil outlet connecting secondary modification reactor 2 top of hot stove 1；The bottom pitch of secondary modification reactor 2
Outlet is divided into two-way, connects the pitch entrance at the middle part of fractionating column 5 by asphalt delivery pipeline two all the way, and another connecting pipe formula adds
The asphalt delivery pipeline one of the boiler tube inlet upstream of hot stove 1；The oil gas extraction mouth connection fractionation at the secondary top of modification reactor 2
The oil gas entrance of the bottom of tower 5；The oil gas extraction mouth connection oil gas condensation cooler 8 at the top of fractionating column 5, the bottom of fractionating column 5 changes
Matter pitch extraction mouth connection modified coal tar pitch sends pipeline outside.
Also include tubular heater 2 32, the boiler tube entrance connection asphalt delivery pipeline one of tubular heater 2 32, boiler tube
The material asphalt conveyance conduit of the flash column pitch inlet upstream on outlet connection flash distillation modification reactor 1 top.
Pitch circulating pump 4 is set respectively on the asphalt delivery pipeline one and asphalt delivery pipeline two.
The modified coal tar pitch, which is sent outside, sets modified coal tar pitch pump 6 and modified coal tar pitch cooler 7 on pipeline.
The top of fractionating column 5 sets side line flash distillation oil circulation pipe, flashes and flash distillation oil cooler 11 is set in oil circulation pipe
Oil pump 10 is flashed with circulation.
The oil gas vent connection oil-water separation tank 9 of the oil gas condensation cooler 8, the flash distillation oil export of oil-water separation tank 9
Connect the flash distillation oil circulation pipe of the side line of fractionating column 5, the incoagulable gas outlet connection vacuum system of oil-water separation tank 9.
Material asphalt A mixes with the outlet pitch of tubular heater 2 32 first, then together enters flash distillation modification reaction
The flash column at the top of kettle 1, the pitch after flash distillation fall into the reactor of flash distillation modification reactor 1 bottom and modification reaction occur；
Reactor temperature control is at 330~400 DEG C during modification reaction, and pitch is to occur based on β-modification reaction；
The light-end products flashed off in the flash column of top and the reacting gas in bottom reactor implosion solution out are dodging
The heat transfer of tower inner transmission matter is steamed, mink cell focus, which falls into reactor, continues that modification reaction occurs, and light-end products exit into oil from flash column top
Gas condensate cooler 8, the light-end products after cooling are collected as flash oil D, and incoagulable gas C enters vacuum system, to ensure
Modification reaction is carried out under negative pressure；
The pitch that flash distillation modification reactor 1 bottom is sent out largely enters the circulating-heating of tubular heater 2 32, in addition small portion
Divide and first mixed with secondary modification reactor bottom pitch, heated subsequently into tubular heater 1, enter back into secondary modification and react
Kettle 2；Control temperature is at 350~420 DEG C in secondary modification reactor 2, and pitch is to occur based on α-modification reaction；Secondary modification is anti-
The bottom pitch of kettle 2 is answered largely to deliver to the circulating-heating of tubular heater 1, fraction delivers to fractionating column 5；Secondary modification reaction
The cracking gas on kettle top also enters fractionating column 5；
Pitch after modifying twice realizes the separation of pitch and oil product in fractionating column 5；Light-end products leave from tower top
Into oil gas condensation cooler 8, the light-end products after cooling are collected as flash oil D, and incoagulable gas C enters vacuum system,
To ensure that the modification reaction in secondary modification reactor 2 and the fractional distillation process in fractionating column 5 are also carried out under negative pressure；Fractionating column 5
The flash oil D of lateral line withdrawal function is after cooling, a part of to be sent out as flash distillation oil product, and remaining is delivered to fractionation tower top and is used as backflow,
Modified coal tar pitch B produces from Fractionator Bottom.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (6)
1. a kind of Existing in Improved Pitch Production System, it is characterised in that change including flash distillation modification reactor, tubular heater first and second
Qualitative response kettle and fractionating column；The flash distillation modification reactor is made up of the flash column on the top being connected and the reactor of bottom,
The pitch entrance connection material asphalt conveyance conduit of flash column, the top oil gas extraction mouth connection oil gas condensation cooling of flash column
Device；The boiler tube entrance of the asphalt outlet connection tubular heater one of reactor bottom, the coil outlet connection of tubular heater one
The pitch entrance on secondary modification reactor top；The bottom asphalt outlet of secondary modification reactor is divided into two-way, passes through drip all the way
Blue or green conveyance conduit two connects the pitch entrance in the middle part of fractionating column, the pitch of another boiler tube inlet upstream of connecting pipe formula heating furnace one
Conveyance conduit one；The oil gas entrance of oil gas extraction mouth connection fractionating column bottom at the top of secondary modification reactor；At the top of fractionating column
Oil gas extraction mouth connection oil gas condensation cooler, fractionation column base modified coal tar pitch extraction mouth connection modified coal tar pitch send pipe outside
Road.
A kind of 2. Existing in Improved Pitch Production System according to claim 1, it is characterised in that also including tubular heater two,
The boiler tube entrance connection asphalt delivery pipeline one of tubular heater two, the flash distillation on coil outlet connection flash distillation modification reactor top
The material asphalt conveyance conduit of tower pitch inlet upstream.
A kind of 3. Existing in Improved Pitch Production System according to claim 1, it is characterised in that the He of asphalt delivery pipeline one
Pitch circulating pump is set on asphalt delivery pipeline two respectively.
4. a kind of Existing in Improved Pitch Production System according to claim 1, it is characterised in that the modified coal tar pitch sends pipeline outside
On set modified coal tar pitch pump and modified coal tar pitch cooler.
5. a kind of Existing in Improved Pitch Production System according to claim 1, it is characterised in that the fractionating column top sets side line
Oil circulation pipe is flashed, flashes and flash distillation oil cooler and circulation flash distillation oil pump is set in oil circulation pipe.
6. a kind of Existing in Improved Pitch Production System according to claim 1, it is characterised in that the oil gas condensation cooler
Oil gas vent connects oil-water separation tank, and the flash distillation oil export of oil-water separation tank connects the flash distillation oil circulation pipe of fractionating column side line,
The incoagulable gas outlet connection vacuum system of oil-water separation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715559.1U CN206887030U (en) | 2017-06-20 | 2017-06-20 | A kind of Existing in Improved Pitch Production System |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715559.1U CN206887030U (en) | 2017-06-20 | 2017-06-20 | A kind of Existing in Improved Pitch Production System |
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| Publication Number | Publication Date |
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| CN206887030U true CN206887030U (en) | 2018-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057740A (en) * | 2017-06-20 | 2017-08-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of Existing in Improved Pitch Production System |
| CN110240918A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle stripping flash distillation production modified coal tar pitches of twin furnace |
| CN110240917A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle pressurization production modified coal tar pitches of twin furnace |
-
2017
- 2017-06-20 CN CN201720715559.1U patent/CN206887030U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057740A (en) * | 2017-06-20 | 2017-08-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of Existing in Improved Pitch Production System |
| CN110240918A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle stripping flash distillation production modified coal tar pitches of twin furnace |
| CN110240917A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle pressurization production modified coal tar pitches of twin furnace |
| CN110240918B (en) * | 2019-07-19 | 2024-04-23 | 中冶焦耐(大连)工程技术有限公司 | System and process for producing modified asphalt by double-furnace double-kettle stripping flash evaporation |
| CN110240917B (en) * | 2019-07-19 | 2024-04-26 | 中冶焦耐(大连)工程技术有限公司 | System and process for producing modified asphalt by double-furnace double-kettle pressurization |
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