CN103160303A - Adjusting device for coal tar pitch quality - Google Patents
Adjusting device for coal tar pitch quality Download PDFInfo
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- CN103160303A CN103160303A CN2011104277077A CN201110427707A CN103160303A CN 103160303 A CN103160303 A CN 103160303A CN 2011104277077 A CN2011104277077 A CN 2011104277077A CN 201110427707 A CN201110427707 A CN 201110427707A CN 103160303 A CN103160303 A CN 103160303A
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Abstract
The invention relates to an adjusting device for coal tar pitch quality. The device is connected with a distillation tower (17) through pipe lines (18). The adjusting device for the coal tar pitch quality is characterized in that the distillation tower (17) is connected with one end of a pitch vapour phase outlet (1) which is arranged at the upper end of the device. The other end of the pitch vapour phase outlet (1) is connected with a tank body (2). A pitch inlet (13) and a pitch outlet (14) are respectively arranged on one side of the tank body (2). Heat preservation cottons (4) are arranged outside the bottom of the tank body (2). Steam pipes (3) are arranged on the outer side of the tank body (2). According to the adjusting device for the coal tar pitch quality, the device is provided to enable the pitch to be in an auto-agglutination reaction so as to enable a pitch TI and coking values to be improved. Before 360 DEG C, distilling off is reduced. A softening point (SP) can be adjusted so as to enable beta resin contents of the pitch to be improved. Performances of a cohesive property, a coking value and the like can be improved. Product quality can be improved.
Description
Technical field
The present invention relates to coal chemical technology, particularly, relate to a kind of setting device, more specifically, relate to a kind of coal asphaltene amount adjusting apparatus.
Background technology
Pitch (asphalt), the chocolate complex mixture by hydrocarbon polymer and the nonmetal derivative thereof of different molecular weight forms is in a liquid state, semi-solid state or solid-state, is a kind of waterproof and dampproof and rot-resistant organic gel gel material.Be used for the industry such as coating, plastics, rubber and surfacing etc.
Pitch mainly can be divided into three kinds of coal tar pitch, petroleum pitch and rock asphalts.
Wherein, coal tar pitch (claiming again coal-tar pitch) is the byproduct of coking, namely remains in the atrament in still kettle after tar distillation.Along with the raising of China's coal tar output and the development of coal tar processing technology, China's coal tar processing industry will form the situation of cut-throat competition.Thereby, more and more come into one's own as the Application and Development of the pitch of coal tar processing bulk product.Coal-tar pitch is that present Carbon Materials is produced unique alternative binding agent, and development and production and the Carbon Materials industrial expansion of the quality of its quality to the high-performance carbon material plays vital effect.
Coal-tar pitch character changes with the mode of removing of coal tar source and low molecular composition thing, condensed aromatics is the main ingredient in coal-tar pitch, be that the coal-tar pitch component is comprised of the aromatic nucleus condensation with the aliphatics substituted radical, its molecular weight distribution extremely wide (200～2000).Due to complicated component, changeable, common solvent proximate analysis method is separated into different several families components with coal-tar pitch: toluene insolubles (TI, be once called as uncombined carbon), close with the α component, molecular-weight average is 1200～2100, be that the coal-tar pitch roasting forms the burnt main ingredient of bonding, mainly play the bonded bridge effect, affect the character such as density, intensity and electric conductivity of Carbon Materials; Quinoline insolubles (QI) claims again macromolecule resin, and molecular-weight average 1800～2600 is divided into primary QI and secondary QI; β resin (TI-QI) is the condensed-nuclei aromatics of middle and high relative molecular weight, molecular weight 1000～1800, and cohesiveness is good, and coking behavior is good, is conducive to improve Carbon Materials intensity and electric conductivity.
Wherein, the factor that affects the coal-tar pitch quality mainly comprises: the softening temperature of coal-tar pitch (SP), and the viscosity of major effect coal-tar pitch, mobility determine carbon product plasticity and kneading temperature; Distillate before 360 ℃, affect the important indicator of asphalt volatile constituents, coking value, the too high meeting of its value produces exhaust gas volumn in the subsequent production process large, and loss also increases; And toluene insolubles (TI) etc.
At present, the coal tar TI of many coal chemical enterprise productions or buying is on the low side, simultaneously due to the restriction of production technique, causes the TI of the mid-temperature pitch produced or modified pitch also on the low side, thereby affect cohesiveness, coking value of binder pitch etc., the performance of carbon product is had certain impact.
The technique that coal tar distillation is produced mid-temperature pitch mainly contains air distillation and atmospheric and vacuum distillation technique etc.The coal-tar pitch quality depends primarily on quality and the production technique of coal tar, and wherein the QI of coal tar and TI content are affected by the factor such as granularity, recovery process of coal, coking system, coal mainly.The TI of the mid-temperature pitch of bibliographical information raising at present mainly realizes by measures such as screening raw material, raising heating-furnace bore temperature, raising coal tar pitch soften points, but can increase energy consumption or produce coking, its application is subject to certain restrictions.
For addressing the above problem, at present domesticly mainly there is a following scheme:
A, utilize pitch at high temperature to have the principle of autohemagglutination effect, design a toluene insolubles regulator, make a part of lower-molecular-weight component in pitch be converted into the relatively high condensed-nuclei aromatics of molecular weight.Use this regulator that the toluene insolubles of pitch is effectively increased, the β resin content of pitch is improved, the performances such as cohesiveness, coking value improve, thereby improve the quality of products.But because the vapour phase thing after asphalt pyrolysis can not effectively be derived, thus regulating effect be there is no to distillating before pitch softening point (SP), 360 ℃, thus can not reach more effective adjusting to asphalt quality.
B, application number: 03133782.1, title: a kind of modifying asphalt and production method thereof.This patent documentation discloses a kind of modifying asphalt and production method thereof, selectively with the volatilizable composition of γ resin, converts the β resin to as far as possible, reduces α resin content in pitch.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.Yet, in the method that this patent documentation provides, must add the aldehyde polymer modification, add the acid catalyst reaction and with the alkali neutralization, increased Na content, and the method steps that this patent documentation provides is many, has increased production cost, use restricted.
Summary of the invention
for solving the problem of above-mentioned existence, the object of the present invention is to provide a kind of coal asphaltene amount adjusting apparatus, described device makes at high temperature self-polymeric reaction of pitch, a part of lower-molecular-weight component in pitch (γ component) is converted into the relatively high condensation condensed-nuclei aromatics of molecular weight (β resin), pitch TI and coking value are increased, distillate reduction before 360 ℃, softening temperature (SP) is adjusted, thereby the underproof phenomenon of mid-temperature pitch TI content of producing when avoiding tar TI content low, the β resin content of pitch is improved, cohesiveness, the performances such as coking value improve, improve the quality of products.
For achieving the above object, the present invention adopts following technical scheme:
A kind of coal asphaltene amount adjusting apparatus, described device is connected with distillation tower by pipeline, it is characterized in that: described distillation tower is connected by pitch vapor phase exit one end of pipeline with the upper end setting of described device, the described pitch vapor phase exit the other end is connected with tank body, described tank body one side is respectively arranged with pitch import and pitch outlet, described tank base arranged outside has insulating cotton, and described tank body arranged outside has vapour pipe.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that a described tank body side relative to the pitch import is provided with manhole.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described insulating cotton lower end is provided with support component.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described support component is fixed in the tank body inboard by fixing part.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described distillation tower is connected with the pitch import by the first threeway cock.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that the outlet of described pitch is by pipeline be linked in sequence successively two-way cock and the second threeway cock.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described tank body outside surface is disposed with heat-conducting daub, thermal insulation layer and shell.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described vapour pipe two ends are respectively arranged with steam inlet and vapour outlet.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be, described the first threeway cock be connected the threeway cock and connect by pipeline.
According to a kind of coal asphaltene amount adjusting apparatus provided by the present invention, employing be that described fixing part is bolt.
The beneficial effect of a kind of coal asphaltene amount adjusting apparatus provided by the present invention is:
1, by the pitch vapor phase exit is set, makes the vapour phase thing that produces after the coal-tar pitch pyrolysis effectively to derive, thereby distillate before pitch softening point (SP), 360 ℃, coking value etc. plays regulating effect;
2, by vapour pipe and insulating cotton are set, make coal-tar pitch still keep higher temperature in tank body, thereby guarantee that coal-tar pitch carries out autohemagglutination smoothly in the optimal temperature scope;
3, by the first threeway cock, the second threeway cock and two-way cock are set, when the TI of tar and mid-temperature pitch content is higher, can be without setting device provided by the invention, thus reduce polymerization time;
4, by manhole is set, make described setting device when stopping work, can clear up the coal-tar pitch and the residue that accumulate in tank body.
Description of drawings
Fig. 1 is the structural representation of a kind of coal asphaltene amount adjusting apparatus provided by the present invention.
Fig. 2 is that the A-A of Fig. 1 is to vertical view.
Fig. 3 is that the B-B of Fig. 1 is to vertical view.
Fig. 4 is the use scheme of installation of a kind of coal asphaltene amount adjusting apparatus provided by the present invention.
In figure, 1, pitch vapor phase exit 2, tank body 3, vapour pipe 4, insulating cotton 5, support component 6, fixing part 7, the first threeway cock 8, two-way cock 9, the second threeway cock 10, manhole 11, heat-conducting daub 12, thermal insulation layer 13, pitch import 14, pitch outlet 15, steam inlet 16, vapour outlet 17, distillation tower 18, pipeline 19, shell.
Embodiment
Below in conjunction with accompanying drawing, a kind of coal asphaltene amount adjusting apparatus provided by the present invention is further explained explanation.
The composition member of a kind of coal asphaltene amount adjusting apparatus provided by the present invention is as follows:
as shown in Figure 1, pitch vapor phase exit 1 one ends are connected with tank body 2, described tank body 2 one sides are respectively arranged with pitch import 13 and pitch outlet 14, described tank body 2 side relative to pitch import 13 is provided with manhole 10, described tank body 2 bottom outside are provided with insulating cotton 4, described tank body 2 arranged outside have vapour pipe 3, insulating cotton 4 lower ends are provided with support component 5, described support component 5 is fixed in tank body 2 inboards by fixing part 6, described tank body 2 outside surfaces are disposed with heat-conducting daub 11, thermal insulation layer 12 and shell 19, described vapour pipe 3 two ends are respectively arranged with steam inlet 15 and vapour outlet 16.
Wherein, described vapour pipe 3 is wound in tank body 2 outsides, is connected with superheated vapour in described vapour pipe 3; Described fixing part 6 is bolt, and support component 5 is fixed support, is used for supporting insulating cotton 4, and fixed support is bolted in tank body 2 inside bottom, is convenient to dismounting; Described shell 19 materials are color steel, aluminium skin or cover waterproof layer; The effect that described manhole 10 is set is, when described setting device is stopped work, opens manhole 10, can clear up the coal-tar pitch and the residue that accumulate in tank body 12.
Described heat-conducting daub 11 can adopt the high thermal conductivity functional materialss take graphite as base-material such as JM-600 inorganic type or SDRS high temperature resistant type, thermal conductivity 〉=12w/mK.During construction, its bonding force is strong, is easy to moulding, and constructability solidifies rapidly afterwards in intensification, and bubbling, do not come off, not efflorescence, and matter is close, heat resistant.
Described insulating cotton 4 can adopt rock cotton board or compound silicate board, requires apparent density 50-150kg/m
3, maximum operation (service) temperature 〉=600 ℃, thermal conductivity 0.03-0.05w/mK.
Described thermal insulation layer 12 can adopt waterproof rock-wool board or hydrophobic type compound silicate board, requires apparent density 60-150kg/m
3, maximum operation (service) temperature 〉=600 ℃, thermal conductivity 0.025-0.050w/mK, Fibre diameter 4-7 μ m, hydrophobic rate 〉=98%.It has, and thermal conductivity is low, and use temperature is high, and fire prevention is not fired, construction facility and cost performance ratio.
Mode of connection is as follows in use for a kind of coal asphaltene amount adjusting apparatus provided by the present invention:
As shown in Figure 4, described pitch vapor phase exit 1 is connected with distillation tower 17 by pipeline 18, pitch outlet 14 is connected with two-way cock 8 by pipeline 18, described pitch import 13 by pipeline 18 order successively and the first threeway cock 7 be connected threeway cock 9 and be connected, a port of described the first threeway cock 7 is connected with distillation tower 17 by pipeline 18, and described two-way cock 8 the other ends are connected with a port of the second threeway cock 9 by pipeline 18.
The use-pattern of a kind of coal asphaltene amount adjusting apparatus provided by the present invention is as follows:
open distillation tower 17, the coal-tar pitch of needs being adjusted quality enters tank body 2 (at this moment from the first threeway cock 7, the port that the first threeway cock 7 is connected with distillation tower 17 and the port that is connected with pitch import 13 are communicated with, close with the port that the second threeway cock 9 is connected), and the flowing full that makes progress from the position near tank body 2 bottoms, then export 14 through two-way cock 8 from pitch, enter again the second threeway cock 9 (at this moment, the port that the second threeway cock 9 is connected with two-way cock 8 and the port that is not connected with the first threeway cock 7 are communicated with, close with the port that the first threeway cock 7 is connected), thereby make the coal-tar pitch after adjusting flow out tank body 2.
in this process, (be insulating cotton 4 due to good steam tracing (being the superheated vapour in vapour pipe 3) and the insulation construction of itself being arranged around tank body 2, heat-conducting daub 11 and thermal insulation layer 12), the temperature that makes superheated vapour is 380～550 ℃, the coal-tar pitch of 350～370 ℃ of therefore drawing in the distillation tower 17, still keep higher temperature (350～375 ℃) in tank body 2, coal-tar pitch has the autohemagglutination effect at this temperature, through 20min～60min thermopolymerization, make a part of lower-molecular-weight component (γ component) in coal-tar pitch be converted into the relatively high condensed-nuclei aromatics of molecular weight (β resin).The small-molecule substance that coal-tar pitch pyrolysis, condensation reaction generate and the vapor species that volatilizes due to pressure decreased are got back in tower, thereby make pitch SP and growth to some extent, distillate reduction before 360 ℃.
Yet, when the TI of tar and mid-temperature pitch content is higher, can be without described setting device tank body 2, and make coal-tar pitch from the first threeway cock 7 (at this moment, the port that the first threeway cock 7 is connected with distillation tower 17 and the port that is connected with the second threeway cock 9 are communicated with, close with the port that pitch import 13 is connected) directly enter the second threeway cock 9 (at this moment, the second threeway cock 9 is closed with the port that two-way cock 8 is connected, all the other two ports are communicated with,), then enter next process, thereby reduce polymerization time.
Embodiment
The below provides the use-case of a kind of coal asphaltene amount adjusting apparatus provided by the present invention:
The structure of coal asphaltene amount adjusting apparatus as shown in Figure 1, wherein heat-conducting daub 11 models are the SDRS high temperature resistant type, thermal conductivity is 15w/mK.Insulating cotton 4 adopts rock cotton board, apparent density 140kg/m
3, 700 ℃ of maximum operation (service) temperatures, thermal conductivity 0.030w/mK.Thermal insulation layer 12 adopts hydrophobic type complex magnesium aluminum silicate plate, apparent density 60kg/m
3, 600 ℃ of maximum operation (service) temperatures, thermal conductivity 0.040w/mK, Fibre diameter 4～6 μ m, hydrophobic rate 98%.There is fixed support in insulating cotton 4 outsides, and spacing is 180mm, have bolt to fix on fixed support, are convenient to dismounting.Thermal insulation layer 12 is laid, tightened around tank body 2 case peripheral wall, alclad skin or cover waterproof layer again around thermal insulation layer 12.Superheat steam temperature in vapour pipe 3 is 500 ℃, draw the coal-tar pitch of 370 ℃ in the distillation tower 17, still keep 375 ℃ of higher temperature in this tank body 2, pitch has the autohemagglutination effect at this temperature, through the 30min thermopolymerization, make a part of lower-molecular-weight component (γ component) in pitch be converted into the relatively high condensed-nuclei aromatics of molecular weight (β resin).The TI of pitch improves 1.5%, SP and improves 2 ℃, distillates before 360 ℃ and reduces by 3%.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates purpose of the present invention, and be not as limitation of the invention, as long as in essential scope of the present invention, all will drop in the scope of claim of the present invention variation, the modification of the above embodiment.
Claims (10)
1. coal asphaltene amount adjusting apparatus, described device is connected with distillation tower (17) by pipeline (18), it is characterized in that: described distillation tower (17) is connected by pitch vapor phase exit (1) one end of pipeline (18) with the upper end setting of described device, described pitch vapor phase exit (1) the other end is connected with tank body (2), described tank body (2) one sides are respectively arranged with pitch import (13) and pitch outlet (14), described tank body (2) bottom outside is provided with insulating cotton (4), described tank body (2) arranged outside has vapour pipe (3).
2. a kind of coal asphaltene amount adjusting apparatus according to claim 1, it is characterized in that: described tank body (a 2) side relative to pitch import (13) is provided with manhole (10).
3. a kind of coal asphaltene amount adjusting apparatus according to claim 1 is characterized in that: described insulating cotton (4) lower end is provided with support component (5).
4. according to claim 1 or 3 described a kind of coal asphaltene amount adjusting apparatus is characterized in that: described support component (5) is fixed in tank body (2) inboard by fixing part (6).
5. a kind of coal asphaltene amount adjusting apparatus according to claim 1 is characterized in that: described distillation tower (17) is connected with pitch import (13) by the first threeway cock (7).
6. a kind of coal asphaltene amount adjusting apparatus according to claim 1 is characterized in that: described pitch outlet (14) is by pipeline (18) be linked in sequence successively two-way cock (8) and the second threeway cock (9).
7. a kind of coal asphaltene amount adjusting apparatus according to claim 1, it is characterized in that: described tank body (2) outside surface is disposed with heat-conducting daub (11), thermal insulation layer (12) and shell (19).
8. a kind of coal asphaltene amount adjusting apparatus according to claim 1 is characterized in that: described vapour pipe (3) two ends are respectively arranged with steam inlet (15) and vapour outlet (16).
9. according to claim 1,5 or 6 described a kind of coal asphaltene amount adjusting apparatus is characterized in that: described the first threeway cock (7) be connected threeway cock (9) and connect by pipeline (18).
10. a kind of coal asphaltene amount adjusting apparatus according to claim 4, it is characterized in that: described fixing part (6) is bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110427707.7A CN103160303B (en) | 2011-12-19 | 2011-12-19 | Adjusting device for coal tar pitch quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110427707.7A CN103160303B (en) | 2011-12-19 | 2011-12-19 | Adjusting device for coal tar pitch quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103160303A true CN103160303A (en) | 2013-06-19 |
| CN103160303B CN103160303B (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110427707.7A Expired - Fee Related CN103160303B (en) | 2011-12-19 | 2011-12-19 | Adjusting device for coal tar pitch quality |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106152098A (en) * | 2016-07-01 | 2016-11-23 | 时建华 | A kind of distributed extensive oil tank heating system |
| CN107446605A (en) * | 2017-08-21 | 2017-12-08 | 宣化钢铁集团有限责任公司 | With addition of the coking mixed coal and coke making and coal blending method of reworked material |
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| JPS59227975A (en) * | 1983-06-08 | 1984-12-21 | Sumikin Coke Co Ltd | Heating of tar in tar distillation process |
| CN1570026A (en) * | 2003-07-24 | 2005-01-26 | 鞍山科技大学 | Modified asphalt and its production method |
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| CN101775304A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Modified asphalt and method for preparing same at medium temperature |
| 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 |
| CN101993705A (en) * | 2010-12-21 | 2011-03-30 | 沈阳东方钛业有限公司 | Asphalt pretreatment tower |
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2011
- 2011-12-19 CN CN201110427707.7A patent/CN103160303B/en not_active Expired - Fee Related
Patent Citations (9)
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| GB850880A (en) * | 1957-10-16 | 1960-10-12 | Gelsenkirchener Bergwerks Ag | Process and apparatus for the continuous production of pitch |
| JPS59227975A (en) * | 1983-06-08 | 1984-12-21 | Sumikin Coke Co Ltd | Heating of tar in tar distillation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152098A (en) * | 2016-07-01 | 2016-11-23 | 时建华 | A kind of distributed extensive oil tank heating system |
| CN107446605A (en) * | 2017-08-21 | 2017-12-08 | 宣化钢铁集团有限责任公司 | With addition of the coking mixed coal and coke making and coal blending method of reworked material |
| CN107446605B (en) * | 2017-08-21 | 2021-06-08 | 宣化钢铁集团有限责任公司 | Coking blending coal added with reclaimed material and coking blending method |
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| Publication number | Publication date |
|---|---|
| CN103160303B (en) | 2014-08-20 |
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