CN104830362A - Manufacturing technique of industrial binder asphalt - Google Patents
Manufacturing technique of industrial binder asphalt Download PDFInfo
- Publication number
- CN104830362A CN104830362A CN201510241924.5A CN201510241924A CN104830362A CN 104830362 A CN104830362 A CN 104830362A CN 201510241924 A CN201510241924 A CN 201510241924A CN 104830362 A CN104830362 A CN 104830362A
- Authority
- CN
- China
- Prior art keywords
- mixed gas
- reactor
- pitch
- production technique
- infant industry
- 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 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000010426 asphalt Substances 0.000 title abstract description 16
- 239000011230 binding agent Substances 0.000 title abstract 3
- 239000007789 gas Substances 0.000 claims abstract description 70
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000011295 pitch Substances 0.000 claims description 39
- 239000011305 binder pitch Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 8
- 238000004939 coking Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000007701 flash-distillation Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011339 hard pitch Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- C10C3/04—Working-up pitch, asphalt, bitumen by chemical means reaction by blowing or oxidising, e.g. air, ozone
Abstract
The invention relates to a manufacturing technique of novel industrial binder asphalt, which comprises the following steps that asphalt is fed into a reaction kettle; a stirrer is started; with the temperature in the reaction kettle controlled at 300-360 DEG C, high temperature polycondensation is performed to synthesize the industrial binder asphalt; at the same time, a mixed gas of nitrogen and oxygen is injected to the reaction kettle from the bottom of the reaction kettle; free radicals in the asphalt are oxidized by oxygen in the mixed gas in a reaction process to improve the molecular weight of the asphalt; and light ingredients in the asphalt are brought out by the left mixed gas, and are called flash oil. According to the technique, the mixed gas of nitrogen and oxygen is introduced to the reaction kettle, and the reaction temperature can be reduced to around 300 DEG C from the traditional over 400 DEG C, so that energy is saved, the cost is lowered greatly, and a synthetic product is high in quality. In addition, the mixed gas is introduced to participate in the reaction, so that a situation that no flash burn or explosion of the flash oil occurs is ensured, and the safety of technological operation is improved accordingly.
Description
Technical field
The invention belongs to tar production industry, be specifically related to a kind of industrial binder pitch (softening temperature is adjustable at 100 ~ 150 DEG C) production technique.
Background technology
At present; domestic tar production progressively trends towards mass-producing; the domestic producer more than 500,000 tons/year of process scale reaches more than 10; and asphaltic products. accounts for the over half of tar production product production; up to the present, domestic coal asphalt product is mainly based on the asphaltic products. of softening temperature at 110 DEG C.
The production of current domestic modified pitch mainly still adopts traditional autoclave heating high temperature polymerization technique, and this technique not only energy consumption is high, long flow path, and at the bottom of still, easy coking, with short production cycle, and usual each cycle only has more than 20 day.Needed for this technique, temperature in the kettle is high, usually needs to be heated to more than 400 DEG C, so not only requires high to equipment, pipeline, valve, and the easy spontaneous combustion of the flash oil produced is exploded, and causes flash distillation oil groove, medial launder becomes the maximum region of security risk.Therefore, the asphaltic products. quality of this explained hereafter does not often reach requirement.
Summary of the invention
Technical problem to be solved by this invention: provide a kind of infant industry binder pitch production technique for the deficiencies in the prior art.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of production technique of infant industry binder pitch, step is as follows: be sent to by pitch in reactor, turn on agitator, controlling reactor temperature is 300 ~ 360 DEG C, carry out high temperature polycondensation compound probability binder pitch, simultaneously by the mixed gas spraying into nitrogen and oxygen bottom reactor in reactor, oxygen in reaction process in mixed gas is by the free-radical oxidn in pitch, improve the molecular weight of pitch, lightweight component in pitch is taken out of by remaining mixed gas, is namely referred to as flash oil.
By such scheme, the mixing speed of agitator controls at 50 ~ 150 revs/min.
By such scheme, in described mixed gas, the volumn concentration of oxygen is 0.05 ~ 5%.
By such scheme, described flash oil component of being taken out of by mixed gas enters flash oil groove and collects after the cooling of flash oil water cooler, and flash oil water cooler adopts low pressure recycle water to cool.
By such scheme, in described reactor, the Liquid level of pitch is at the 60%-70% of the volume of reactor.
By such scheme, described in the mixed gas temperature that passes into be 300 ~ 360 DEG C, when passing into by the flow of Flow-rate adjustment valve regulation mixed gas at 30 ± 10 m
3/ h.The temperature of mixed gas can control through steam heater heating.Mixed gas temperature, close to reactor temperature, can guarantee the distributing uniformity of gas in still in pitch, and this is mainly because the thermal conduction of pitch is poor, and viscosity temperature influence alters a great deal.
By such scheme, described mixed gas sprays into reactor by mixed gas distribution injector, described mixed gas injector is circular tube structure, the lower surface of ring pipe is arranged with two mixed gas inlet mouths, from injector bottom inflow, ring pipe is evenly distributed with multiple production well.Two inlet mouths can ensure that air pressure is even, air inlet uniformity.
By such scheme, the pipe diameter size of described mixed gas distribution injector is 60% of reactor internal diameter, is set in bottom in reactor by closure plate flange.For convenience detach when overhauling by closure plate Flange joint.
By such scheme, described production well aperture is below 300 microns.According to fluent meterial surface tension, by aperture design below 300 microns, the phenomenon that can effectively prevent hole blocked, also can ensure the stable of air-flow, each pore flow velocity is even.Production well on ring pipe realizes by laser boring.
By such scheme, by controlling the inflow velocity of pitch in described technique, controlling the reaction times of pitch in reactor is 4 ~ 5h.
Because the viscosity of pitch is very large when pitch carries out high temperature polycondensation in a kettle., the small-molecule substance generated by polycondensation can not be very fast by reactor flash distillation, such one side hinders polycondensation and carries out fast, on the other hand, small-molecule substance is still mixed in pitch and causes pitch softening point lower, this technique is after a large amount of experiments, creationaryly introduce mixed gas, particularly by homemade mixed gas distribution injector, mixed gas is passed at the bottom of still equably, being stirred by agitator is dispersed in pitch by mixed gas again, it accelerates polycondensation on the one hand, oxygen in mixed gas can with pitch free radical generation oxidizing reaction, improve asphaltene molecule amount, very fast asphalt quality index is adjusted to target value, temperature of reaction can be reduced nearly 100 DEG C on the other hand, not only save a large amount of Sweet natural gases, and in traditional technique, decrease a reactor and support equipment thereof, this is also a quantum jump of this technique.This is because: the hard pitch temperature of general tar production explained hereafter is all more than 400 DEG C, and the temperature of reaction of this processing requirement only 300 DEG C ~ 360 DEG C, the Sweet natural gas of such reactor roasting kiln can not be used substantially, be only baker needs before going into operation, burner for heating furnace design loading of the present invention is at 30m thus
3/ h gas consumption, can save Sweet natural gas and be about 120m on traditional technology basis
3/ h, annual cost-saving nearly 4,000,000 yuan.Except this, the light component produced in reaction process and flash oil also can be taken out of by the mixed gas that this technique adopts, flash oil is carried the permeability that can improve pipeline through flash oil water cooler by gas, prevent line clogging, and can stop the phenomenon of flash oil flash burn.
Beneficial effect of the present invention:
(1) this technique is by introducing the mixed gas of nitrogen and oxygen in a kettle., temperature of reaction can be spent more than traditional 400 and drop to about 300 degree, compared with the prior art, reduce 1 ~ 2 pitch reactor and support equipment thereof, flow process is obviously shortened, significantly reduce gas consumption, save energy simultaneously, greatly reduce costs; In addition, mixed gas participates in reaction can guarantee that flash oil can not flash burn or blast, improves the security of technological operation greatly;
(2) quality product is high, and the adjustable elastic of quality product becomes large, can, according to the requirement of client, make the adjustable elastic of asphaltic products. quality greatly increase by temperature adjustment, mixed gas flow adjustment etc., to be easy to modified pitch Mass adjust-ment, to country-level product, meet customer requirement.
Accompanying drawing explanation
Fig. 1 is infant industry binder pitch production technological process of the present invention;
Fig. 2 is mixed gas distribution emitter construction schematic diagram of the present invention.
Embodiment
Embodiment 1
A production technique for infant industry binder pitch, as shown in Figure 1, from the pitch that asphalt tower is sent here, temperature about 340 DEG C, the bitumen level of adjustment reactor, liquid level general control reactor volume 2/3 (volume of reactor is 20m
3), and by controlling the inflow velocity of pitch, controlling the reaction times is 4 hours, is 310 DEG C, simultaneously by gas heating furnace reacting by heating still adjustment reactor temperature, start agitator, adjustment rotating speed, at 50 revs/min, carries out high temperature polycondensation, at the same time, after the mixed gas (oxygen volume content is 0.05%) of nitrogen and oxygen is heated to 300 DEG C by steam heater, coutroi velocity is 27m
3/ h enters reactor through mixed gas distribution injector bottom reactor.Described mixed gas injector is circular tube structure, and caliber is 25mm, and size is 60% of reactor internal diameter, is set in bottom in reactor by closure plate flange, the lower surface of ring pipe is arranged with two mixed gas inlet mouths, from injector bottom inflow.Ring pipe is evenly laid with multiple production well, and the oxygen contained in mixed gas in reaction process can by the free-radical oxidn in pitch, and improve the molecular weight of pitch, the lightweight component in pitch is taken out of by remaining mixed gas lentamente, is namely referred to as flash oil.The flash oil component of being taken out of by mixed gas enters flash oil groove and collects after the cooling of flash oil water cooler, and flash oil water cooler adopts low pressure recycle water to cool.
The industrial binder pitch product softening temperature 100 DEG C of its synthesis, β resin content is 18%, coking value 56%.
Embodiment 2
From the pitch that asphalt tower is sent here, temperature about 340 DEG C, the bitumen level of adjustment reactor, liquid level general control reactor volume 2/3 (volume of reactor is 20m
3), and by controlling the inflow velocity of pitch, controlling the reaction times is 4 hours, is 320 DEG C, simultaneously by gas heating furnace reacting by heating still adjustment reactor temperature, start agitator, adjustment rotating speed, at 110 revs/min, carries out high temperature polycondensation, at the same time, after the mixed gas (oxygen volume content is 4%) of nitrogen and oxygen is heated to 300 DEG C by steam heater, coutroi velocity is 27m
3/ h enters reactor through mixed gas distribution injector bottom reactor.Described mixed gas injector is circular tube structure, and caliber is 25mm, and size is 60% of reactor internal diameter, is set in bottom in reactor by closure plate flange, the lower surface of ring pipe is arranged with two mixed gas inlet mouths, from injector bottom inflow.Ring pipe is evenly laid with multiple production well.The oxygen contained in mixed gas in reaction process can by the free-radical oxidn in pitch, and improve the molecular weight of pitch, the lightweight component in pitch is taken out of by remaining mixed gas lentamente, is namely referred to as flash oil.The flash oil component of being taken out of by mixed gas enters flash oil groove and collects after the cooling of flash oil water cooler, and flash oil water cooler adopts low pressure recycle water to cool.
The industrial binder pitch product softening temperature 110 DEG C of its synthesis, β resin content is 20%, coking value 58%.
Embodiment 3
From the pitch that asphalt tower is sent here, temperature about 340 DEG C, the bitumen level of adjustment reactor, liquid level general control reactor volume 2/3 (volume of reactor is 20m
3), controlling the reaction times is 5 hours, adjusting reactor temperature by gas heating furnace reacting by heating still is 360 DEG C, meanwhile, start agitator, adjustment rotating speed is at 150 revs/min, carry out high temperature polycondensation, at the same time, after the mixed gas (oxygen volume content is 5%) of nitrogen and oxygen is heated to 350 DEG C by steam heater, coutroi velocity is 40m
3/ h enters reactor through mixed gas distribution injector bottom reactor.Described mixed gas injector is circular tube structure, and caliber is 25mm, and size is 60% of reactor internal diameter, is set in bottom in reactor by closure plate flange, the lower surface of ring pipe is arranged with two mixed gas inlet mouths, from injector bottom inflow.Ring pipe is evenly laid with the production well in less than 300 microns, multiple aperture.The oxygen contained in mixed gas in reaction process can by the free-radical oxidn in pitch, and improve the molecular weight of pitch, the lightweight component in pitch is taken out of by remaining mixed gas lentamente, is namely referred to as flash oil.The flash oil component of being taken out of by mixed gas enters flash oil groove and collects after the cooling of flash oil water cooler, and flash oil water cooler adopts low pressure recycle water to cool.
The industrial binder pitch product softening temperature 150 DEG C of its synthesis, β resin content is 26%, coking value 66%.
To sum up, the present invention is by regulating the parameter such as temperature of reaction kettle and fine setting mixed gas flow, can the softening temperature of asphaltic products. be controlled at 100 ~ 150 DEG C, β resin content can control more than 18%, coking value can control more than 56%, is easy to the first grade controlled by asphalt quality in national standard.
Claims (10)
1. the production technique of an infant industry binder pitch, it is characterized in that: pitch is sent in reactor, turn on agitator, controlling reactor temperature is 300 ~ 360 DEG C, carry out high temperature polycondensation compound probability binder pitch, simultaneously by the mixed gas spraying into nitrogen and oxygen bottom reactor in reactor, oxygen in reaction process in mixed gas is by the free-radical oxidn in pitch, improve the molecular weight of pitch, lightweight component in pitch is taken out of by remaining mixed gas, is namely referred to as flash oil.
2. the production technique of infant industry binder pitch according to claim 1, is characterized in that: the mixing speed of agitator controls at 50 ~ 150 revs/min.
3. the production technique of infant industry binder pitch according to claim 1, is characterized in that: in described mixed gas, the volumn concentration of oxygen is 0.05% ~ 5%.
4. the production technique of infant industry binder pitch according to claim 1, it is characterized in that: described flash oil component of being taken out of by mixed gas enters flash oil groove and collects after the cooling of flash oil water cooler, flash oil water cooler adopts low pressure recycle water to cool.
5. the production technique of infant industry binder pitch according to claim 1, is characterized in that: in described reactor pitch Liquid level reactor volume 60% ~ 70%.
6. the production technique of infant industry binder pitch according to claim 1, is characterized in that: described in the mixed gas temperature that passes into be 300 ~ 360 DEG C, by the flow of Flow-rate adjustment valve regulation mixed gas at 30 ± 10 m
3/ h.
7. the production technique of infant industry binder pitch according to claim 1, it is characterized in that: described mixed gas sprays into reactor by mixed gas distribution injector, described mixed gas injector is circular tube structure, the lower surface of ring pipe is arranged with two mixed gas inlet mouths, from injector bottom inflow, ring pipe is evenly distributed with multiple production well.
8. the production technique of infant industry binder pitch according to claim 7, is characterized in that: the pipe diameter size of described mixed gas distribution injector is 60% of reactor internal diameter, is set in bottom in reactor by closure plate flange.
9. the production technique of infant industry binder pitch according to claim 7, is characterized in that: described production well aperture is below 300 microns.
10. the production technique of infant industry binder pitch according to claim 1, is characterized in that: by controlling the inflow velocity of pitch in described technique, controlling the reaction times of pitch in reactor is 4 ~ 5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241924.5A CN104830362B (en) | 2015-05-13 | 2015-05-13 | A kind of industrial binder pitch production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241924.5A CN104830362B (en) | 2015-05-13 | 2015-05-13 | A kind of industrial binder pitch production technology |
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| CN104830362A true CN104830362A (en) | 2015-08-12 |
| CN104830362B CN104830362B (en) | 2017-08-29 |
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| CN201510241924.5A Active CN104830362B (en) | 2015-05-13 | 2015-05-13 | A kind of industrial binder pitch production technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106520166A (en) * | 2015-09-10 | 2017-03-22 | 神华集团有限责任公司 | Preparation method of asphalt material, asphalt material prepared by the same and application thereof |
| CN106563404A (en) * | 2015-10-12 | 2017-04-19 | 江苏创新石化有限公司 | Production system for detergent for residue oil hydrotreating device |
| CN109282611A (en) * | 2018-11-20 | 2019-01-29 | 潍坊市精华粉体工程设备有限公司 | A kind of heating furnace for the processing of mesophase pitch oxidative stabilization |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031570A1 (en) * | 1995-04-07 | 1996-10-10 | Neste/Wright Asphalt Products Co. | Process for liquefying tire rubber and product thereof |
| RU2349625C1 (en) * | 2007-09-19 | 2009-03-20 | Общество с ограниченной ответственностью "НОВОБИТ" | Method of making road asphalt |
| CN201433191Y (en) * | 2009-06-21 | 2010-03-31 | 中国矿业大学 | Kettle-type asphalt air oxidation device |
| CN102965136A (en) * | 2012-12-14 | 2013-03-13 | 济宁碳素集团有限公司 | Production method of coal pitch |
-
2015
- 2015-05-13 CN CN201510241924.5A patent/CN104830362B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031570A1 (en) * | 1995-04-07 | 1996-10-10 | Neste/Wright Asphalt Products Co. | Process for liquefying tire rubber and product thereof |
| RU2349625C1 (en) * | 2007-09-19 | 2009-03-20 | Общество с ограниченной ответственностью "НОВОБИТ" | Method of making road asphalt |
| CN201433191Y (en) * | 2009-06-21 | 2010-03-31 | 中国矿业大学 | Kettle-type asphalt air oxidation device |
| CN102965136A (en) * | 2012-12-14 | 2013-03-13 | 济宁碳素集团有限公司 | Production method of coal pitch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106520166A (en) * | 2015-09-10 | 2017-03-22 | 神华集团有限责任公司 | Preparation method of asphalt material, asphalt material prepared by the same and application thereof |
| CN106563404A (en) * | 2015-10-12 | 2017-04-19 | 江苏创新石化有限公司 | Production system for detergent for residue oil hydrotreating device |
| CN109282611A (en) * | 2018-11-20 | 2019-01-29 | 潍坊市精华粉体工程设备有限公司 | A kind of heating furnace for the processing of mesophase pitch oxidative stabilization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104830362B (en) | 2017-08-29 |
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Effective date of registration: 20240109 Address after: 437300 Chibi High Quality Development Research Institute, Building 33, High tech Zone Beautiful Health Industrial Park, Zhonghuopu Town, Chibi City, Xianning City, Hubei Province Patentee after: Hubei Haoke Carbon Material Technology Co.,Ltd. Address before: 430081 Peace Avenue 947 Qingshan District, Wuhan City, Hubei Province Patentee before: WUHAN University OF SCIENCE AND TECHNOLOGY |