CN1970689A - Process for preparing modified asphalt - Google Patents
Process for preparing modified asphalt Download PDFInfo
- Publication number
- CN1970689A CN1970689A CN 200610119516 CN200610119516A CN1970689A CN 1970689 A CN1970689 A CN 1970689A CN 200610119516 CN200610119516 CN 200610119516 CN 200610119516 A CN200610119516 A CN 200610119516A CN 1970689 A CN1970689 A CN 1970689A
- Authority
- CN
- China
- Prior art keywords
- pitch
- upgrading
- temperature
- heating
- asphalt
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000010426 asphalt Substances 0.000 title claims description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000011295 pitch Substances 0.000 description 40
- 239000002994 raw material Substances 0.000 description 7
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010010 raising Methods 0.000 description 5
- 238000012719 thermal polymerization Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011294 coal tar pitch Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- BAECOWNUKCLBPZ-HIUWNOOHSA-N Triolein Natural products O([C@H](OCC(=O)CCCCCCC/C=C\CCCCCCCC)COC(=O)CCCCCCC/C=C\CCCCCCCC)C(=O)CCCCCCC/C=C\CCCCCCCC BAECOWNUKCLBPZ-HIUWNOOHSA-N 0.000 description 1
- PHYFQTYBJUILEZ-UHFFFAOYSA-N Trioleoylglycerol Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC(OC(=O)CCCCCCCC=CCCCCCCCC)COC(=O)CCCCCCCC=CCCCCCCCC PHYFQTYBJUILEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011339 hard pitch Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 description 1
- 229940117972 triolein Drugs 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a manufacturing technique of modified tar, which comprises the following steps: heating tar segment by segment; evening heat conductive oil to modify; cooling to generate steam; moulding tar.
Description
Technical field
The present invention relates to the pitch processing technology, specifically a kind of production technique of modified pitch.
Background technology
Modified pitch (claiming high softening-point coal-tar pitch or high temperature coal-tar pitch or gilsonite again) be mainly used in Graphite Electrodes binding agent, hard pitch anode mix, graphite anode for aluminum binding agent, brush produce in binding agent etc., mainly contain following several production method at present: (1) is the intermittent pressurized thermal polymerization method production of raw material with the mid-temperature pitch, it is that the fusion mid-temperature pitch is imported in the airtight still, slowly be heated to specified temperature, under certain pressure, keep going out still after for some time, be batch operation, the temperature of reacting in heat polymerization process is 400 ℃; Pressure 0.8～1.0MPa; 4～8 hours time etc. are optimum reaction condition.(2) with the mid-temperature pitch be the continuous normal pressure thermal polymerization method production of raw material, its hot polymerization index: 275～405 ℃ of the temperature of reaction; Pressure is normal pressure; Time determines by inlet amount, and the material asphalt softening temperature is (80 ± 3) ℃.(3) be the production of raw material atmosphere intermission formula distillatory thermal polymerization method with tar, be characterized in prolonging the whole still time, carry out thermopolymerization under the whole still temperature of raising, gained modified pitch softening temperature all about 120 ℃, adopts " return and join " method to reduce softening temperature again.
Number of patent application is 200410033280.2, it can once finish the production of middle temperature and modified pitch " temperature and modified pitch production technique in the single kettle type of gap " in single still, processing method mainly is: the coal tar raw material processed is to water content≤5%, adopt coal-fired hot waste gas to heat, fire box temperature is 800-900 ℃, negative pressure in the still, be distillation tower vacuum tightness 0.04-0.075Pa, the distillation of heating, after cutting out mixed triolein and carbolineum, residue makes the mid-temperature pitch product through cooling process, and the upgrading that continues to heat is after cooling process is the modified pitch product.
Number of patent application is 03133782.1 to disclose a kind of modifying asphalt and production method thereof, its the key technical indexes is: selectively with the volatilizable composition of γ resin, convert the β resin to as far as possible, reduce α resin content in the pitch, the modifying asphalt characteristics are that the bitumen flue gas quantity discharged has reduced more than 50% when being heated to 400 ℃, and have the thermosetting characteristic, the pitch of modification has linearity molecular structure, 10 ℃～180 ℃ of softening temperatures; β resin content 10～50%; The α resin content increases ≯ 1.0% before the modification on year-on-year basis.The production stage of modifying asphalt is: material choice; Meticulous distillation; Add polymkeric substance; Adjust the pH value; Condensation reaction; Neutralization reaction; Vacuum exhaust, release discharge.
Number of patent application is 02827978.6 to disclose the production method that a kind of high flash point bituminous intermittently prepares anode asphalt for refining aluminium, adopt single still thermal polymerization process to reach back and convert the flash oil mixed technology, comprise that the liquid starting material mid-temperature pitch carries out thermal condensation, it is even to add the flash oil compounding, be mixed after cooling forming steps such as packaging final prod.
The weak point of above method be pitch when thermopolymerization, adopt combustion gas directly to the heating of upgrading still, heat-up rate is fast, cause part still bottom coke, influence the homogeneity of quality product, after the still temperature surpasses 400 ℃, the bituminous close-burning speeds up, thereby influences QI content in the pitch.
Summary of the invention
The production technique that a kind of modified pitch of providing at the deficiencies in the prior art is provided, the problem of easy coking at the bottom of still when it has solved the pitch thermopolymerization, thus QI content in the pitch effectively controlled, and production technique is simple, be convenient to operation control, the quality product height.
The concrete technical scheme that realizes the object of the invention is: a kind of production method of modified pitch, characteristics are to comprise following processing step:
(1) zone heating
To be incubated at 320～380 ℃ of asphalt stocks and send into heating system continuously, heating system is that a flat fire stove divides 2～6 sections or 2～6 flat fire stoves, temperature-gradient method heating, and every section or each flat fire stove heat up 5～20 ℃, evenly are warming up to 350～420 ℃;
(2) upgrading
Pitch after the heating enters respectively in several insulation upgrading stills synchronously, under constantly stirring pitch is carried out upgrading, and the time is 6～15 hours, and the asphalt temperature of upgrading is cooled to 160-250 ℃, and be 5～12 hours cooling time;
(3) cooling forming
The pitch of upgrading is sent into the intercooling groove, be cooled to 140～200 ℃ after, after entering pitch cooler and being cooled to 130～180 ℃, to asphalt moulding.
Thermal oil is adopted in described upgrading still insulation, cooling, and thermal oil is provided by heat-conducting oil furnace, the circulation of thermal oil water cooler.
Described thermal oil cools off with warm water, and the hot water of refrigeration cycle produces steam through evaporator tower.
The present invention makes the production of modified pitch realize continuously feeding, gap upgrading, discharging continuously, and segmentation, gradation heat temperature raising further prevent the bituminous coking phenomenon, thereby effectively control the QI content in the pitch, reduced production cost, easy and simple to handle, control accuracy improves, good product quality.
Description of drawings
Accompanying drawing is a schema of the present invention
Embodiment
Embodiment 1
(1) zone heating
The mid-temperature pitch raw material is incubated in the middle temperature groove of 355 ℃ of temperature and with 10m
3/ h continuously sends into the heating system internal heating, and heating system is a flat fire stove, and it divides 3 sections heat temperature raisings, and every section rises 10 ℃ equably, is warmed up to 385 ℃.
(2) upgrading
Pitch after the heating enters respectively in the upgrading still of 5 insulations synchronously, and 385 ℃ of temperature of reaction, continuously stirring were cooled to 170 ℃ with upgrading still temperature after 13 hours, and be 6 hours cooling time.The insulation of upgrading still, cooling are to be finished by the thermal oil that heat-conducting oil furnace, thermal oil water cooler provide.
(3) cooling forming
Pitch behind the upgrading is sent into the intercooling groove, and the intercooling groove is interior with 40m
3When/h internal circulating load refluxes with 10m
3/ h sends into pitch cooler, asphalt temperature is cooled to 160 ℃ after with 10m
3/ h advances the moulding of asphalt moulding system, and mold temperature is 160 ℃.
Embodiment 2
(1) zone heating
The mid-temperature pitch raw material is incubated in the middle temperature groove of 360 ℃ of temperature and with 12m
3/ h continuously sends into the heating system internal heating, and heating system is four flat fire stoves, and each flat fire stove is one section, is divided into four sections heat temperature raisings, and every section rises 8 ℃ equably, is warmed up to 392 ℃.
(2) upgrading
Pitch after the heating enters respectively in 5 upgrading stills synchronously, and 392 ℃ of temperature of reaction, continuously stirring were cooled to 175 ℃ with upgrading still temperature after 11 hours, and be 7 hours cooling time.The insulation of upgrading still, cooling are to be finished by the thermal oil that heat-conducting oil furnace, thermal oil water cooler provide.
(3) cooling forming
Pitch behind the upgrading is sent into the intercooling groove, and the intercooling groove is interior with 45m
3When/h internal circulating load refluxes with 12m
3/ h sends into pitch cooler, asphalt temperature is cooled to 170 ℃ after with 12m
3/ h advances the moulding of asphalt moulding system, and mold temperature is 170 ℃.
Embodiment 3
(1) zone heating
The mid-temperature pitch raw material is incubated in the middle temperature groove of 365 ℃ of temperature and with 15m
3/ h continuously sends into the heating system internal heating, and heating system is three flat fire stoves, and each flat fire stove is one section, is divided into 3 sections heat temperature raisings, and every section rises 10 ℃ equably, is warmed up to 395 ℃.
(2) upgrading
Pitch after the heating enters respectively in 5 upgrading stills synchronously, and 395 ℃ of temperature of reaction, continuously stirring were cooled to 170 ℃ with upgrading still temperature after 10 hours, and be 6 hours cooling time.The insulation of upgrading still, cooling are to be finished by the thermal oil that heat-conducting oil furnace, thermal oil water cooler provide.
(3) cooling forming
Pitch behind the upgrading is sent into the intercooling groove, and the intercooling groove is interior with 50m
3When/h internal circulating load refluxes with 15m
3/ h sends into pitch cooler, asphalt temperature is cooled to 160 ℃ after with 15m
3/ h advances the moulding of asphalt moulding system, and mold temperature is 160 ℃.
Thermal oil of the present invention is to carry out refrigerative by warm water, and cooled hot water produces steam through evaporator tower, controls the cooling temperature of thermal oil with vapor pressure.
The asphalt quality index that the present invention produces is as follows:
| Index name | Modified pitch GB8730-88 | Example 1 | Example 2 | Example 3 | |
| One-level | Secondary | ||||
| Softening temperature (ring and ball method) ℃ | 100-115 | 100-120 | 106 | 107 | 111 |
| Toluene insolubles content (extraction process) % | 28-34 | ＞26 | 36 | 37 | 35 |
| Quinoline insolubles content wt%QI% | 8-14 | 6-15 | 13 | 10 | 9 |
| β resin content % is not less than | 18 | 16 | 24 | 25 | 24 |
| Coking value % | ≥54 | ≥50 | 58 | 58 | 59 |
| Ash % | ≤0.3 | ≤0.3 | ≤0.25 | ≤0.25 | ≤0.25 |
| Moisture content % | ≤5 | ≤5 | ≤0.5 | ≤0.5 | ≤0.5 |
| Cut below 360 ℃ (wt%) | ≤2.0 | ≤2.0 | ≤2.0 | ||
Claims (3)
1, a kind of production technique of modified pitch is characterized in that may further comprise the steps:
(1) zone heating
To be incubated at 320～380 ℃ of asphalt stocks and send into heating system continuously, heating system is that a flat fire stove divides 2～6 sections or 2～6 flat fire stoves, temperature-gradient method heating, and every section or each flat fire stove heat up 5～20 ℃, evenly are warming up to 350～420 ℃;
(2) upgrading
Pitch after the heating enters respectively in several insulation upgrading stills synchronously, under constantly stirring pitch is carried out upgrading, and the time is 6～15 hours, and the asphalt temperature of upgrading is cooled to 160-250 ℃, and be 5～12 hours cooling time;
(3) cooling forming
The pitch of upgrading is sent into the intercooling groove, be cooled to 140～200 ℃ after, after entering pitch cooler and being cooled to 130～180 ℃, to asphalt moulding.
2, according to the production technique of the described modified pitch of claim 1, it is characterized in that described upgrading still insulation, cooling employing thermal oil, thermal oil is provided by heat-conducting oil furnace, the circulation of thermal oil water cooler.
3, according to the production technique of the described modified pitch of claim 2, it is characterized in that described thermal oil cools off with warm water, the hot water of refrigeration cycle produces steam through evaporator tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119516A CN1970689B (en) | 2006-12-13 | 2006-12-13 | Process for preparing modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119516A CN1970689B (en) | 2006-12-13 | 2006-12-13 | Process for preparing modified asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970689A true CN1970689A (en) | 2007-05-30 |
| CN1970689B CN1970689B (en) | 2010-05-12 |
Family
ID=38111716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610119516A Expired - Fee Related CN1970689B (en) | 2006-12-13 | 2006-12-13 | Process for preparing modified asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1970689B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460801C (en) * | 2007-07-27 | 2009-02-11 | 上海佛乐科技有限公司 | Modified bituminous pitch coiled material production line water-cooling groove |
| CN101838542A (en) * | 2010-05-19 | 2010-09-22 | 镇江新光冶金辅材厂 | Manufacturing method of ultra-temperature pitch |
| CN101323788B (en) * | 2008-07-31 | 2011-07-27 | 上海奥韦通工程技术有限公司 | Processing process for preparing various asphalt and fuel oil with coal tar |
| CN102492453A (en) * | 2011-12-12 | 2012-06-13 | 宝钢工程技术集团有限公司 | Smokeless underwater forming production device for pitch and technology thereof |
| CN103160303A (en) * | 2011-12-19 | 2013-06-19 | 上海宝钢化工有限公司 | Adjusting device for coal tar pitch quality |
| 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 |
| CN108315033A (en) * | 2018-02-13 | 2018-07-24 | 鞍钢股份有限公司 | A method of producing modified coal tar pitch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2612935B1 (en) * | 1987-03-24 | 1989-06-09 | Huiles Goudrons & Derives | BINDING PIT FOR ELECTRODE AND MANUFACTURING METHOD THEREOF |
| CN1147564C (en) * | 2001-12-13 | 2004-04-28 | 黑龙江黑化集团有限公司 | Process for producing anode asphalt for refining aluminium |
| CN1386820A (en) * | 2002-05-28 | 2002-12-25 | 中国冶金建设集团鞍山焦化耐火材料设计研究总院 | Process for industrially preparing acicular coke from coal |
| CN1256406C (en) * | 2004-04-14 | 2006-05-17 | 朱小花 | Tecnique for producing mesothermal and modified asphaltum in intermittent single kettle type |
-
2006
- 2006-12-13 CN CN200610119516A patent/CN1970689B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460801C (en) * | 2007-07-27 | 2009-02-11 | 上海佛乐科技有限公司 | Modified bituminous pitch coiled material production line water-cooling groove |
| CN101323788B (en) * | 2008-07-31 | 2011-07-27 | 上海奥韦通工程技术有限公司 | Processing process for preparing various asphalt and fuel oil with coal tar |
| CN101838542A (en) * | 2010-05-19 | 2010-09-22 | 镇江新光冶金辅材厂 | Manufacturing method of ultra-temperature pitch |
| CN101838542B (en) * | 2010-05-19 | 2013-02-27 | 镇江新光冶金辅材厂 | Manufacturing method of ultra-temperature pitch |
| CN102492453A (en) * | 2011-12-12 | 2012-06-13 | 宝钢工程技术集团有限公司 | Smokeless underwater forming production device for pitch and technology thereof |
| CN103160303A (en) * | 2011-12-19 | 2013-06-19 | 上海宝钢化工有限公司 | Adjusting device for coal tar pitch quality |
| CN103160303B (en) * | 2011-12-19 | 2014-08-20 | 上海宝钢化工有限公司 | Adjusting device for coal tar pitch quality |
| 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 |
| CN103865556B (en) * | 2012-12-14 | 2016-03-02 | 上海宝钢化工有限公司 | Device and method for producing mesophase-free medium-temperature modified asphalt |
| CN108315033A (en) * | 2018-02-13 | 2018-07-24 | 鞍钢股份有限公司 | A method of producing modified coal tar pitch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1970689B (en) | 2010-05-12 |
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Owner name: YANG DONGPING Free format text: FORMER OWNER: SHANGHAI AOWEITONG ENGINE TECHNOLOGY CO., LTD. Effective date: 20100521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |