CN104774633A - Technology for modifying pitch by retention tower adopting electric tracing heating at constant temperature - Google Patents
Technology for modifying pitch by retention tower adopting electric tracing heating at constant temperature Download PDFInfo
- Publication number
- CN104774633A CN104774633A CN201510163623.5A CN201510163623A CN104774633A CN 104774633 A CN104774633 A CN 104774633A CN 201510163623 A CN201510163623 A CN 201510163623A CN 104774633 A CN104774633 A CN 104774633A
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- Prior art keywords
- pitch
- tar
- tower
- heating
- detained
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Classifications
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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
-
- 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
- C10C3/002—Working-up pitch, asphalt, bitumen by thermal means
-
- 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
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
-
- 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
-
- 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
- C10C3/08—Working-up pitch, asphalt, bitumen by selective extraction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention relates to a technology for modifying pitch by a retention tower adopting electric tracing heating at a constant temperature. The production technology is a single heating production technology. Only one tube furnace is used for heating in a technological process, and therefore, the energy-saving effect is obvious; and the pitch retention tower adopts electric tracing heating so that the temperature of the pitch retention tower can be above 375 DEG C all the time in the process of pitch conveying and stirring thermal polymerization, and a stable heating condition required for pitch thermal polymerization is ensured, thus obtaining the modified pitch product with stable quality.
Description
Technical field
The present invention relates to modified pitch production technical field, be specifically related to a kind of tower electricity that is detained and accompany heating to hold the technique of warm modified pitch.
Background technology
Hard pitch and modified pitch take mid-temperature pitch as raw material, obtains through respective handling.Be that the production method of raw material production modified pitch mainly contains oxidation thermal polymerization method, normal pressure thermal polymerization method, pressurization thermal polymerization method, vacuum flashing method etc. with pitch.Pitch is directly delivered to pitch storage tank by pump after heat exchange, with the loss of heat in mass transfer process, lay up period also with the heat transfer process of air, pitch adopts steam heating in transmission and standing process, and this heating is held warm mode and is difficult to meet the requirement that pitch keeps more than 375 DEG C temperature.
Summary of the invention
The object of the invention is the deficiency for solving the problems of the technologies described above, there is provided a kind of and be detained the technique that warm modified pitch is held in tower electricity companion heating, this production technique is for once to heat production technique, in technological process, only use a tube furnace to heat, energy-saving effect is obvious, and pitch is detained tower employing electricity companion heating, can make pitch transmission and heat of stirring be polymerized process in temperature all the time more than 375 DEG C, ensure the stable heating condition required for pitch thermopolymerization, thus obtain the modified pitch product of stay in grade.
The present invention is the deficiency solved the problems of the technologies described above, and the technical scheme adopted is: a kind of tower electricity that is detained accompanies heating to hold the technique of warm modified pitch, comprises the following steps:
1), by stirring after raw tar and solvent all and, all with after tar carry out weight Component seperation through the de-pulp pump feeding ultracentrifuge that dewaters, isolated weight component enters light constituent storage tank and heavy constituent storage tank respectively;
2), by light constituent or heavy constituent enter dehydrated tar groove by pump extraction, then after the extraction of dehydrated tar groove and tar preheater, two contaminated product condensers, washing oil water cooler and the heat exchange of washing oil condenser, be heated to 180 ~ 190 DEG C by feedstock pump and enter in the middle part of dehydration tower; Wherein, tar preheater only uses when going into operation;
3a), after dehydration tower tower reactor anhydrous tar is heated to 220 ~ 230 DEG C after delivering to tar/carbolineum interchanger, pitch/anhydrous tar circulation heat exchanger heat exchange by tar recycle pump, get back to dehydration tower tower reactor, bottom temperature controls at 200 ~ 210 DEG C, dewater to less than 0.2% tar after pitch/anhydrous tar extracts interchanger A out and pitch/anhydrous tar extracts interchanger B heating out, enter the pitch heat exchange to 250 DEG C of fraction tower bottom with circulation after enter in the middle part of fraction tower;
3b), the isolated pitch of fraction tower bottom, deliver to after pitch/anhydrous tar extracts interchanger B and pitch/anhydrous tar circulation heat exchanger heat exchange out through pitch recycle pump and deliver to diamond heating, be heated to the most of pitch after 380 ~ 390 DEG C get back at the bottom of fraction tower and circulate, sub-fraction enters pitch as extraction and is detained tower, carry out thermal polycondensation upgrading, pitch is detained tower and carries out heat supply by electric heating companion device, electric heating companion device comprises the electric-heating belt and the temperature controlling system that are wrapped in pitch and are detained tower outside, pitch after upgrading is extracted out from delay tower bottom by modified pitch pump, extract out in interchanger A at pitch/anhydrous tar and enter the high groove of putting of pitch after heat exchange and to take out or shaping,
Described temperature controlling system comprises the power supply unit that the multiple temperature probe laid along electric-heating belt length direction and the temperature controller that multiple temperature probe all connects connect with electric-heating belt and the temperature controlled switch be serially connected between power supply unit and electric-heating belt in current supply circuit, and temperature controlled switch is undertaken controlling by temperature controller and it connects with temperature controller.
Solvent in described step 1) be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and the add-on of solvent is the 15%-20% of raw tar weight.
Centrifugal force in described step 1) during centrifugation is 3000G, centrifugation 1-5min.
After the centrifugation of described step 1) Raw tar, the quinoline insolubles content of heavy constituent tar is greater than 1%, the quinoline insolubles content of light constituent tar be less than 1% be light constituent.
Described step 2) in enter dehydrated tar groove raw tar when being light constituent tar, step 3b) asphaltic products. that obtains is high-quality asphalt.
Described step 2) in enter dehydrated tar groove raw tar when being heavy constituent tar, step 3b) asphaltic products. that obtains is common modified pitch.
Described fraction tower is vacuum still.
beneficial effect
Production Process for Modified Pitch of the present invention, this production technique is for once to heat production technique, in technological process, only use a tube furnace to heat, energy-saving effect is obvious, and pitch is detained tower employing electricity companion heating, can make pitch in the process of transmission and heat of stirring polymerization temperature all the time more than 375 DEG C, the stable heating condition required for guarantee pitch thermopolymerization, thus obtain the modified pitch product of stay in grade.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of Production Process for Modified Pitch of the present invention;
Reference numeral: 1, raw tar storage tank, 2, dehydration tower, 3, fraction tower, 4, tube furnace, 5, pitch/anhydrous tar extracts interchanger A out, and 6, pitch/anhydrous tar extracts interchanger B out, 7, pitch/anhydrous tar circulation heat exchanger, 8, pitch is detained tower, 9, pitch is high puts groove, 10, light constituent storage tank, 11, heavy constituent storage tank, 12, tar preheater, 13, two contaminated product condensers, 14, washing oil water cooler, 15, washing oil condenser.
Embodiment
As shown in the figure: a kind of tower electricity that is detained accompanies heating to hold the technique of warm modified pitch, comprises the following steps:
1) stir with solvent after, raw tar being extracted out from raw tar storage tank 1 equal and, all with after tar through dewater de-pulp pump send into ultracentrifuge carry out weight Component seperation, isolated weight component enters light constituent storage tank 10 and heavy constituent storage tank 11 respectively;
Solvent in described step 1) be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and the add-on of solvent is the 15%-20% of raw tar weight.Centrifugal force during centrifugation is 3000G, centrifugation 1-5min.After raw tar centrifugation, the quinoline insolubles content of heavy constituent tar is greater than 1%, the quinoline insolubles content of light constituent tar be less than 1% be light constituent.
2), by light constituent or heavy constituent enter dehydrated tar groove by pump extraction, then after the extraction of dehydrated tar groove and tar preheater 12, two contaminated product condenser 13, washing oil water cooler 14 and washing oil condenser 15 heat exchange, be heated to 180 ~ 190 DEG C by feedstock pump and enter in the middle part of dehydration tower 2; Wherein, tar preheater 12 only uses when going into operation;
3a), after dehydration tower 2 tower reactor anhydrous tar is heated to 220 ~ 230 DEG C after delivering to tar/carbolineum interchanger, pitch/anhydrous tar circulation heat exchanger 7 heat exchange by tar recycle pump, get back to dehydration tower 2 tower reactor, bottom temperature controls at 200 ~ 210 DEG C, dewater to less than 0.2% tar after pitch/anhydrous tar extracts interchanger A5 out and pitch/anhydrous tar extracts interchanger B6 heating out, enter pitch heat exchange to 250 bottom fraction tower 3 DEG C with circulation after enter in the middle part of fraction tower 3;
3b), isolated pitch bottom fraction tower 3, deliver to through pitch recycle pump and deliver to tube furnace 4 after pitch/anhydrous tar extracts interchanger B6 and pitch/anhydrous tar circulation heat exchanger 7 heat exchange out and heat, be heated to the most of pitch after 380 ~ 390 DEG C get back to fraction tower 3 end and circulate, sub-fraction enters pitch as extraction and is detained tower 8, carry out thermal polycondensation upgrading, pitch is detained tower 8 and carries out heat supply by electric heating companion device, electric heating companion device comprises the electric-heating belt and the temperature controlling system that are wrapped in pitch and are detained tower outside, pitch after upgrading is detained tower 8 bottom by modified pitch pump from pitch and extracts out, extract out in interchanger A5 at pitch/anhydrous tar and enter the high groove 9 of putting of pitch after heat exchange and to take out or shaping,
Described step 2) in enter dehydrated tar groove raw tar when being light constituent tar, step 3b) asphaltic products. that obtains is high-quality asphalt.
Described step 2) in enter dehydrated tar groove raw tar when being heavy constituent tar, step 3b) asphaltic products. that obtains is common modified pitch.
Temperature controlling system comprises the power supply unit that the multiple temperature probe laid along electric-heating belt length direction and the temperature controller that multiple temperature probe all connects connect with electric-heating belt and the temperature controlled switch be serially connected between power supply unit and electric-heating belt in current supply circuit, and temperature controlled switch is undertaken controlling by temperature controller and it connects with temperature controller.
Modified pitch production system of the present invention, pitch is detained tower and adopts electricity companion heating, can make pitch in the process of transmission and heat of stirring polymerization temperature all the time more than 375 DEG C, the stable heating condition required for guarantee pitch thermopolymerization, thus obtain the modified pitch product of stay in grade.
Claims (7)
1. be detained the technique that warm modified pitch is held in tower electricity companion heating, it is characterized in that: comprise the following steps:
1), by stirring after raw tar and solvent all and, all with after tar carry out weight Component seperation through the de-pulp pump feeding ultracentrifuge that dewaters, isolated weight component enters light constituent storage tank and heavy constituent storage tank respectively;
2), by light constituent or heavy constituent enter dehydrated tar groove by pump extraction, then after the extraction of dehydrated tar groove and tar preheater, two contaminated product condensers, washing oil water cooler and the heat exchange of washing oil condenser, be heated to 180 ~ 190 DEG C by feedstock pump and enter in the middle part of dehydration tower; Wherein, tar preheater only uses when going into operation;
3a), after dehydration tower tower reactor anhydrous tar is heated to 220 ~ 230 DEG C after delivering to tar/carbolineum interchanger, pitch/anhydrous tar circulation heat exchanger heat exchange by tar recycle pump, get back to dehydration tower tower reactor, bottom temperature controls at 200 ~ 210 DEG C, dewater to less than 0.2% tar after pitch/anhydrous tar extracts interchanger A out and pitch/anhydrous tar extracts interchanger B heating out, enter the pitch heat exchange to 250 DEG C of fraction tower bottom with circulation after enter in the middle part of fraction tower;
3b), the isolated pitch of fraction tower bottom, deliver to after pitch/anhydrous tar extracts interchanger B and pitch/anhydrous tar circulation heat exchanger heat exchange out through pitch recycle pump and deliver to diamond heating, be heated to the most of pitch after 380 ~ 390 DEG C get back at the bottom of fraction tower and circulate, sub-fraction enters pitch as extraction and is detained tower, carry out thermal polycondensation upgrading, pitch is detained tower and carries out heat supply by electric heating companion device, electric heating companion device comprises the electric-heating belt and the temperature controlling system that are wrapped in pitch and are detained tower outside, pitch after upgrading is extracted out from delay tower bottom by modified pitch pump, extract out in interchanger A at pitch/anhydrous tar and enter the high groove of putting of pitch after heat exchange and to take out or shaping, described temperature controlling system comprises the power supply unit that the multiple temperature probe laid along electric-heating belt length direction and the temperature controller that multiple temperature probe all connects connect with electric-heating belt and the temperature controlled switch be serially connected between power supply unit and electric-heating belt in current supply circuit, and temperature controlled switch is undertaken controlling by temperature controller and it connects with temperature controller.
2. a kind of tower electricity that is detained as claimed in claim 1 accompanies heating to hold the technique of warm modified pitch, it is characterized in that: the solvent in described step 1) be light oil, washing oil or light oil and washing oil arbitrarily than mixed solvent, and the add-on of solvent is the 15%-20% of raw tar weight.
3. a kind of tower electricity that is detained as claimed in claim 1 accompanies heating to hold the technique of warm modified pitch, it is characterized in that: the centrifugal force in described step 1) during centrifugation is 3000G, centrifugation 1-5min.
4. a kind of tower electricity that is detained as claimed in claim 1 accompanies heating to hold the technique of warm modified pitch, it is characterized in that: after the centrifugation of described step 1) Raw tar, the quinoline insolubles content of heavy constituent tar is greater than 1%, the quinoline insolubles content of light constituent tar be less than 1% be light constituent.
5. be a kind ofly detained tower electricity companion heating and hold the technique of warm modified pitch as claimed in claim 1, it is characterized in that: described step 2) in enter dehydrated tar groove raw tar when being light constituent tar, step 3b) asphaltic products. that obtains is high-quality asphalt.
6. be a kind ofly detained tower electricity companion heating and hold the technique of warm modified pitch as claimed in claim 1, it is characterized in that: described step 2) in enter dehydrated tar groove raw tar when being heavy constituent tar, step 3b) asphaltic products. that obtains is common modified pitch.
7. a kind of tower electricity that is detained as claimed in claim 1 accompanies heating to hold the technique of warm modified pitch, it is characterized in that: described fraction tower is vacuum still.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163623.5A CN104774633B (en) | 2015-04-09 | 2015-04-09 | It is a kind of to be detained the technique that tower electricity holds warm modified coal tar pitch with heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163623.5A CN104774633B (en) | 2015-04-09 | 2015-04-09 | It is a kind of to be detained the technique that tower electricity holds warm modified coal tar pitch with heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104774633A true CN104774633A (en) | 2015-07-15 |
| CN104774633B CN104774633B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510163623.5A Active CN104774633B (en) | 2015-04-09 | 2015-04-09 | It is a kind of to be detained the technique that tower electricity holds warm modified coal tar pitch with heating |
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| Country | Link |
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| CN (1) | CN104774633B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736030A (en) * | 1994-12-07 | 1998-04-07 | Maruzen Petrochemical Co., Ltd. | Process for manufacturing fine particles of pitch with a high softening point |
| US7318891B1 (en) * | 2003-11-03 | 2008-01-15 | Dtx Technologies Llc | Noah's pitch process |
| CN103059892A (en) * | 2013-01-25 | 2013-04-24 | 兖矿科蓝煤焦化有限公司 | Tar distillation process for directly producing modified pitch |
| CN103525444A (en) * | 2013-10-18 | 2014-01-22 | 河南开炭新材料有限公司 | Intermediate-temperature modified pitch extracting device and intermediate-temperature modified pitch extracting process |
| CN104277465A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for extracting and processing modified asphalt |
-
2015
- 2015-04-09 CN CN201510163623.5A patent/CN104774633B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736030A (en) * | 1994-12-07 | 1998-04-07 | Maruzen Petrochemical Co., Ltd. | Process for manufacturing fine particles of pitch with a high softening point |
| US7318891B1 (en) * | 2003-11-03 | 2008-01-15 | Dtx Technologies Llc | Noah's pitch process |
| CN103059892A (en) * | 2013-01-25 | 2013-04-24 | 兖矿科蓝煤焦化有限公司 | Tar distillation process for directly producing modified pitch |
| CN103525444A (en) * | 2013-10-18 | 2014-01-22 | 河南开炭新材料有限公司 | Intermediate-temperature modified pitch extracting device and intermediate-temperature modified pitch extracting process |
| CN104277465A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for extracting and processing modified asphalt |
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| Publication number | Publication date |
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| CN104774633B (en) | 2017-04-05 |
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| 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: Ai Humin Inventor after: Zhou Yunhui Inventor after: Zhao Bin Inventor before: Ai Humin Inventor before: Zhou Yunhui Inventor before: Zhao Bin |
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| TA01 | Transfer of patent application right |
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. |
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