CN104804758B - Heating flash evaporation holds the technique for pressing modified coal tar pitch - Google Patents
Heating flash evaporation holds the technique for pressing modified coal tar pitch Download PDFInfo
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- CN104804758B CN104804758B CN201510163622.0A CN201510163622A CN104804758B CN 104804758 B CN104804758 B CN 104804758B CN 201510163622 A CN201510163622 A CN 201510163622A CN 104804758 B CN104804758 B CN 104804758B
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- tar
- colophonium
- tower
- modified coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The present invention relates to a heating flash evaporation holds the technique for pressing modified coal tar pitch, process for preparing asphalt is once to heat production technology, only heated using a tube furnace in technical process, energy-saving effect is obvious, and the principle reduced with reduced pressure using boiling point, the lower molecular weight components in Colophonium are carried out with flash separation and the extraction of gas phase under negative pressure is persistently kept.Avoid under conventional distil-lation separation condition, excessively cross-linked polymeric is mild coking with the uneven part that is heated at high temperature for asphalt component, and obtained from, target asphaltic products can meet the requirement of high-end carbonaceous product.
Description
Technical field
The present invention relates to modified coal tar pitch production technical field, and in particular to a heating flash evaporation holds the work of pressure modified coal tar pitch
Skill.
Background technology
Hard grades of bitumen and modified coal tar pitch are with mid temperature pitch as raw material, through obtained in respective handling.With Colophonium as raw material
The production method of production modified coal tar pitch mainly has oxidation thermal polymerization method, normal pressure thermal polymerization method, pressurization thermal polymerization method, vacuum flashing method etc..It is existing
In having technique, raw tar Jing ultracentrifuge centrifugations enter boiled tar after removing coal ash dust, free carbon and water
Groove, the boiled tar for obtaining carry out media for heat exchange by raw tar pumped and heat exchanger and dehydration are entered to after 180～190 DEG C
Tower, obtains being dehydrated and is heated to 280 DEG C or so into tube furnace convection section to less than 0.2% anhydrous tar and enters fraction tower, by
In asphalt component, excessively cross-linked polymeric and the uneven part that is heated can be mild coking at high temperature, the Colophonium of fraction bottom of towe extraction
The mid temperature pitch product of general quality is obtained Jing after anhydrous tar/asphalt exchanger heat exchange.
The content of the invention
The purpose of the present invention is the deficiency to solve above-mentioned technical problem, there is provided one time heating flash evaporation holds pressure modified coal tar pitch
Technique, the production technology are only heated using a tube furnace in technical process once to heat production technology, energy-conservation effect
Fruit is obvious, and the principle reduced with reduced pressure using boiling point, carries out flash separation simultaneously to the lower molecular weight components in Colophonium
The extraction of gas phase under negative pressure is kept persistently.Avoid under conventional distil-lation separation condition, asphalt component is excessively crosslinked poly- at high temperature
Close mild coking with the uneven part that is heated, target asphaltic products can meet the requirement of high-end carbonaceous product obtained from.
To solve the deficiency of above-mentioned technical problem, the technical scheme for being adopted is the present invention：Heating flash evaporation is held pressure and is changed
The technique of matter Colophonium, comprises the following steps：
1）, raw tar is mixed with solvent after stirring and, and after the de- pulp pump of tar Jing dehydrations send into it is super from
Scheming carries out weight Component seperation, and the weight component isolated respectively enters light component storage tank and heavy constituent storage tank；
2）, light component or heavy constituent entered into boiled tar groove by pumped, then taken out from boiled tar groove by raw material pump
Go out 180～190 DEG C are heated to after the heat exchange of tar preheater, two contaminated product condensers, washing oil cooler and washing oil condenser
And enter in the middle part of dehydrating tower；Wherein, tar preheater is used only when going into operation；
3a）, dehydrating tower tower reactor anhydrous tar is pumped to tar/carbolineum heat exchanger, Colophonium/anhydrous tar and followed by tar circulation
After 220～230 DEG C are heated to after the heat exchange of ring heat exchanger, dehydrating tower tower reactor is returned to, bottom temperature is controlled at 200～210 DEG C, is taken off
The tar of water to less than 0.2% is Jing after Colophonium/anhydrous tar extracts heat exchanger A out and Colophonium/anhydrous tar extracts heat exchanger B heating out
Exchange heat to after 250 DEG C with the Colophonium for being recycled into fraction tower bottom and enter in the middle part of fraction tower；
3b）, the Colophonium isolated of fraction tower bottom, the circulation of Jing Colophoniumes be pumped to Colophonium/anhydrous tar extract out heat exchanger B and
Diamond heating is delivered to after Colophonium/anhydrous tar circulation heat exchanger heat exchange, the most of Colophonium after 380～390 DEG C is heated to and is returned
It is circulated to fraction bottom of towe, as extraction into flash oil tower, flash oil tower bottom discharging opening is connected to Colophonium to sub-fraction
It is detained tower, Colophonium carries out thermal polycondensation modification in delay tower, and the top of flash oil tower is connected with the top of Colophonium delay tower,
Colophonium after modification is extracted out from tower bottom is detained by modified coal tar pitch pump, is exchanged heat laggard in Colophonium/anhydrous tar extracts heat exchanger A out
Enter Colophonium height and put groove take-away or molding.
The step 1）In solvent be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and solvent plus
Enter the 15%-20% that amount is raw tar weight.
The step 1）Centrifugal force during middle centrifugation is 3000G, centrifugation 1-5min.
The step 1）After middle raw tar centrifugation, the quinoline insolubles content of heavy constituent tar is more than 1%, light component
The quinoline insolubles content of tar is light component less than 1%.
The step 2）When the raw tar of middle entrance boiled tar groove is light component tar, step 3b）The Colophonium for obtaining
Product is high-quality asphalt.
The step 2）When the raw tar of middle entrance boiled tar groove is heavy constituent tar, step 3b）The Colophonium for obtaining
Product is common modified coal tar pitch.
Described fraction tower is vacuum distillation tower.
Beneficial effect
The Production Process for Modified Pitch of the present invention only uses a tubular type once to heat production technology, in technical process
Stove is heated, and energy-saving effect is obvious, and the principle reduced with reduced pressure using boiling point, to the small-molecular-weight group in Colophonium
Divide the extraction for carrying out flash separation and persistently keeping gas phase under negative pressure.Avoid under conventional distil-lation separation condition, asphalt component exists
Under high temperature, excessive cross-linked polymeric is mild coking with the uneven part that is heated, and obtained from, target asphaltic products can meet high-end
The requirement of carbonaceous product.
Description of the drawings
Fig. 1 is the schematic flow sheet of Production Process for Modified Pitch of the present invention；
Reference：1st, raw tar storage tank, 2, dehydrating tower, 3, fraction tower, 4, tar preheater, 5, Colophonium/anhydrous Jiao
Oil extracts heat exchanger A out, and 6, Colophonium/circulation tar heat exchanger, 7, tube furnace, 8, flash oil tower, 9, Colophonium delay tower, 10, Colophonium
Height puts groove, 11, Colophonium/anhydrous tar extract heat exchanger B out, 12, washing oil condenser, 13, light component storage tank, 14, heavy constituent storage tank,
15th, two contaminated products condensation, 16, washing oil cooler.
Specific embodiment
As shown in the figure：Heating flash evaporation holds the technique of pressure modified coal tar pitch, comprises the following steps：
1）, raw tar is extracted out by raw tar storage tank 1 after with solvent mix and, and after tar Jing take off
The de- pulp pump of water sends into ultracentrifuge carries out weight Component seperation, and the weight component isolated respectively enters 13 He of light component storage tank
Heavy constituent storage tank 14；
The step 1）In solvent be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and solvent plus
Enter the 15%-20% that amount is raw tar weight.
The step 1）Centrifugal force during middle centrifugation is 3000G, centrifugation 1-5min.
The step 1）After middle raw tar centrifugation, the quinoline insolubles content of heavy constituent tar is more than 1%, light component
The quinoline insolubles content of tar is light component less than 1%.
2）, light component or heavy constituent entered into boiled tar groove by pumped, then taken out from boiled tar groove by raw material pump
Go out 180 are heated to after the heat exchange of tar preheater 4, two contaminated product condensers 15, washing oil cooler 16 and washing oil condenser 12
～190 DEG C and enter dehydrating tower in the middle part of 2；Wherein, tar preheater 4 is used only when going into operation；
3a）, 2 tower reactor anhydrous tar of dehydrating tower by tar circulation be pumped to tar/carbolineum heat exchanger, Colophonium/anhydrous tar
After circulation heat exchanger 6 is heated to 220～230 DEG C after exchanging heat, 2 tower reactor of dehydrating tower is returned to, bottom temperature is controlled 200～210
DEG C, it is dehydrated to less than 0.2% tar Jing Colophoniumes/anhydrous tar and extracts heat exchanger A5 and Colophonium/anhydrous tar extraction heat exchanger out
Exchange heat to after 250 DEG C with the Colophonium for being recycled into 3 bottom of fraction tower after B11 heating and enter in the middle part of fraction tower 3；
3b）, the Colophonium isolated of 3 bottom of fraction tower, the circulation of Jing Colophoniumes is pumped to Colophonium/anhydrous tar and extracts heat exchanger out
B11 and Colophonium/anhydrous tar circulation heat exchanger 6 are delivered to tube furnace 7 after exchanging heat and are heated, the major part being heated to after 380～390 DEG C
Colophonium returns to 3 bottom of fraction tower and is circulated, and as extraction into flash oil tower 8,8 bottom discharge mouth of flash oil tower connects sub-fraction
It is connected to Colophonium and is detained tower 9, Colophonium carries out thermal polycondensation modification in delay tower 9, and tower 9 is detained with Colophonium in the top of flash oil tower 8
Top be connected, the Colophonium after modification is extracted out from tower 9 bottom is detained by modified coal tar pitch pump, is extracted out in Colophonium/anhydrous tar and is changed
Groove 10 is put into Colophonium height after exchanging heat in hot device A5 to take out or molding.The step 2）The raw material of middle entrance boiled tar groove is burnt
When oil is light component tar, step 3b）The asphaltic products for obtaining is high-quality asphalt；The step 2）Middle entrance boiled tar groove
When raw tar is heavy constituent tar, step 3b）The asphaltic products for obtaining is common modified coal tar pitch.
The Production Process for Modified Pitch of the present invention only uses a tubular type once to heat production technology, in technical process
Stove is heated, and energy-saving effect is obvious, and the principle reduced with reduced pressure using boiling point, to the small-molecular-weight group in Colophonium
Divide the extraction for carrying out flash separation and persistently keeping gas phase under negative pressure.Avoid under conventional distil-lation separation condition, asphalt component exists
Under high temperature, excessive cross-linked polymeric is mild coking with the uneven part that is heated, and obtained from, target asphaltic products can meet high-end
The requirement of carbonaceous product.
Claims (6)
1. a heating flash evaporation holds the technique for pressing modified coal tar pitch, it is characterised in that：Comprise the following steps：
1）, raw tar is mixed with solvent after stirring and, and after the de- pulp pump of tar Jing dehydrations send into ultracentrifuge
Weight Component seperation is carried out, the weight component isolated respectively enters light component storage tank and heavy constituent storage tank, raw tar centrifugation
After separation, the quinoline insolubles content of heavy constituent tar is more than 1%, the quinoline insolubles content of light component tar less than 1% for light
Component；
2）, light component or heavy constituent entered into boiled tar groove by pumped, then by raw material pump from boiled tar groove extract out with
180～190 DEG C are heated to after the heat exchange of tar preheater, two contaminated product condensers, washing oil cooler and washing oil condenser to go forward side by side
Enter in the middle part of dehydrating tower；Wherein, tar preheater is used only when going into operation；
3a）, dehydrating tower tower reactor anhydrous tar by tar circulation be pumped to tar/carbolineum heat exchanger, Colophonium/anhydrous tar circulating picture-changing
After 220～230 DEG C are heated to after the heat exchange of hot device, return to dehydrating tower tower reactor, bottom temperature is controlled at 200～210 DEG C, be dehydrated to
Less than 0.2% tar Jing after Colophonium/anhydrous tar extracts heat exchanger A out and Colophonium/anhydrous tar extracts heat exchanger B heating out with follow
Ring enters the Colophonium of fraction tower bottom and exchanges heat to after 250 DEG C in the middle part of fraction tower；
3b）, the Colophonium isolated of fraction tower bottom, the circulation of Jing Colophoniumes is pumped to Colophonium/anhydrous tar and extracts heat exchanger B and drip out
Diamond heating is delivered to after green grass or young crops/anhydrous tar circulation heat exchanger heat exchange, the most of Colophonium after 380～390 DEG C is heated to and is returned to
Fraction bottom of towe is circulated, and as extraction into flash oil tower, it is stagnant that flash oil tower bottom discharging opening is connected to Colophonium to sub-fraction
Stay tower, Colophonium that thermal polycondensation modification is carried out in delay tower, and the top of flash oil tower is connected with the top of Colophonium delay tower, changes
Colophonium after matter is extracted out from tower bottom is detained by modified coal tar pitch pump, is entered after exchanging heat in Colophonium/anhydrous tar extracts heat exchanger A out
Colophonium height is put groove and is taken out or molding.
2. the technique that a heating flash evaporation as claimed in claim 1 holds pressure modified coal tar pitch, it is characterised in that：The step 1）In
Solvent be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and the addition of solvent is raw tar weight
15%-20%。
3. the technique that a heating flash evaporation as claimed in claim 1 holds pressure modified coal tar pitch, it is characterised in that：The step 1）In
Centrifugal force during centrifugation is 3000G, centrifugation 1-5min.
4. the technique that a heating flash evaporation as claimed in claim 1 holds pressure modified coal tar pitch, it is characterised in that：The step 2）In
Into boiled tar groove raw tar be light component tar when, step 3b）The asphaltic products for obtaining is high-quality asphalt.
5. the technique that a heating flash evaporation as claimed in claim 1 holds pressure modified coal tar pitch, it is characterised in that：The step 2）In
Into boiled tar groove raw tar be heavy constituent tar when, step 3b）The asphaltic products for obtaining is common modified coal tar pitch.
6. the technique that a heating flash evaporation as claimed in claim 1 holds pressure modified coal tar pitch, it is characterised in that：Described fraction tower
For vacuum distillation tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163622.0A CN104804758B (en) | 2015-04-09 | 2015-04-09 | Heating flash evaporation holds the technique for pressing modified coal tar pitch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163622.0A CN104804758B (en) | 2015-04-09 | 2015-04-09 | Heating flash evaporation holds the technique for pressing modified coal tar pitch |
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| CN104804758A CN104804758A (en) | 2015-07-29 |
| CN104804758B true CN104804758B (en) | 2017-04-05 |
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| CN113680301B (en) * | 2021-07-23 | 2022-05-31 | 东华大学 | Method and device for preparing spinnable mesophase pitch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775308A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Method for producing modified asphalt |
| CN103242879A (en) * | 2013-04-25 | 2013-08-14 | 新疆鑫联煤化工有限公司 | Production method of modified pitch |
| CN103865556A (en) * | 2012-12-14 | 2014-06-18 | 上海宝钢化工有限公司 | Device and method for producing mesophase-free medium-temperature modified asphalt |
-
2015
- 2015-04-09 CN CN201510163622.0A patent/CN104804758B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775308A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Method for producing modified asphalt |
| CN103865556A (en) * | 2012-12-14 | 2014-06-18 | 上海宝钢化工有限公司 | Device and method for producing mesophase-free medium-temperature modified asphalt |
| CN103242879A (en) * | 2013-04-25 | 2013-08-14 | 新疆鑫联煤化工有限公司 | Production method of modified pitch |
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| CN104804758A (en) | 2015-07-29 |
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| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Mao Inventor after: Li Guangmin Inventor after: Zhou Yunhui Inventor after: Ai Humin Inventor after: Zhao Bin Inventor after: Pan Xiaolei Inventor before: Zhou Yunhui Inventor before: Ai Humin Inventor before: Zhao Bin Inventor before: Pan Xiaolei |
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Effective date of registration: 20170302 Address after: 452670 Ziyun City, Xuchang province Xiangcheng County town of Liu Village Applicant after: Henan Kai Tan novel material company limited Applicant after: China Pingmei Shenma Energy Chemical Group Co., Ltd. Address before: 452670 Ziyun City, Xuchang province Xiangcheng County town of Liu Village Applicant before: Henan Kai Tan novel material company limited |
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Address after: 461700 intersection of Kaiyuan Road and Qizi Road, Ziyun Town, Xiangcheng County, Xuchang City, Henan Province Patentee after: Henan Shoucheng technology new material Co.,Ltd. Patentee after: CHINA PINGMEI SHENMA ENERGY CHEMICAL GROUP Co.,Ltd. Address before: 452670 Po Liu Cun, Ziyun Town, Xiangcheng County, Xuchang City, Henan Province Patentee before: HENAN KAITAN NEW MATERIAL Co.,Ltd. Patentee before: CHINA PINGMEI SHENMA ENERGY CHEMICAL GROUP Co.,Ltd. |