CN202482271U - Novel tar distillation tower - Google Patents
Novel tar distillation tower Download PDFInfo
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- CN202482271U CN202482271U CN2012200443082U CN201220044308U CN202482271U CN 202482271 U CN202482271 U CN 202482271U CN 2012200443082 U CN2012200443082 U CN 2012200443082U CN 201220044308 U CN201220044308 U CN 201220044308U CN 202482271 U CN202482271 U CN 202482271U
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- tar distillation
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Abstract
The utility model relates to a novel tar distillation tower. By the aid of the novel tar distillation tower, bi-anthracene oil can be obtained while medium-temperature pitch is manufactured in a tar distillation process. The novel tar distillation tower comprises a tower body, a raw material inlet, a tower-top carbolic oil gas-phase outlet, a carbolic oil liquid-phase reflux inlet, a naphthalene oil extracting outlet, a gas absorber oil extracting outlet, a mono-anthracene oil extracting outlet, a bi-anthracene oil extracting outlet, tower plates and a medium-temperature pitch discharge outlet. The novel tar distillation tower is characterized in that the quantity of the power plates of the tar distillation tower ranges from 62 to 75, the bi-anthracene oil extracting outlet is positioned on a side of the tower body, and the medium-temperature pitch discharge outlet is positioned on the lower portion of a tower kettle. The bi-anthracene oil extracting outlet is arranged between the sixtieth tower plate and the seventy-first tower plate according to an arrangement sequence from the top to the bottom of the distillation tower. The novel tar distillation tower has the advantages that the height of the tower is increased, the bi-anthracene oil extracted at a liquid-phase extracting position under the condition of steady operation is increased, light compositions in pitch are removed in advance, accordingly, the bi-anthracene oil is manufactured while the medium-temperature pitch is directly manufactured in the tar distillation process, extra heat load does not need to be increased, earth pitch extracting devices are omitted, occupied area is reduced, and investment is saved.
Description
Technical field
The utility model relates in the tar distillation and coal tar to be carried out the process of fractionation by distillation, thereby in coal tar, obtains products such as anthracene oil and mid-temperature pitch.
Background technology
Tar distillation is an ordinary method of under industrial condition, cutting apart tar cuts.Normally constitute by chemical engineering unit operations such as a whole set of heating, evaporation, fractionation and condensation coolings.At present domestic and international enterprise adopts usually, the reliable tar distillation technology of technical comparative maturity has air distillation, atmospheric and vacuum distillation and several kinds of technologies of underpressure distillation.
The flow process that wherein reduces pressure has with Japan and turned to the flow process of representative in new day and be the flow process of representative with Australian Kao Baisi.
New daily use chemicals reduced pressure distillation process flow process by tar dewater in advance, dehydration and underpressure distillation form.Dehydrated tar is cut and viscid bitumens such as tar light oil, carbolic oil, naphtalene oil, washing oil, carbolineum through fractionation by distillation.Major equipment has dehydration tower, king-tower (being the cut tower), process furnace and heat exchanger etc., and its still-process is accomplished by single tower, mainly produces viscid bitumen at the bottom of the distillation Tata.The eighties initial stage Baosteel is introduced this flow process, because viscid bitumen is a raw material of producing needle coke (or pitch coke) in the follow-up workshop section, so all produce viscid bitumen in the tar distillation process.But China's pitch is mainly used in the production modified pitch, and the viscid bitumen that adopts this technology to obtain also needs further processing to obtain mid-temperature pitch, as the starting material of modified pitch.
Kao Baisi reduced pressure distillation process flow process is heated up in a steamer tower eventually by dehydration tower, coke tar distillation tower, Wood creosote tower and pitch and is formed, and wherein coke tar distillation tower, Wood creosote tower and pitch heat up in a steamer tower be underpressure distillation end.Behind the coke tar distillation tower extraction mixing naphtalene oil, at Wood creosote tower extraction lightweight Wood creosote and middle matter Wood creosote, pitch heats up in a steamer extraction heavy Wood creosote in the tower, final production hard pitch at the bottom of the tower eventually at pitch at the bottom of the tower.This technology is to be the production technique of purpose to produce hard pitch with carbon black oil, and technical process is long, energy consumption height, the situation of the not too suitable further deep processing of tar.
The present invention is in order to solve the problem that the asphaltic products. produced in the new daily use chemicals reduced pressure distillation process can not the direct production modified pitch; For improving the equipment effective rate of utilization; Need carry out technical renovation to the coke tar distillation tower of original device, thereby above problem is effectively solved.
Summary of the invention
The purpose of the utility model provides a kind of novel coke tar distillation tower; This device is through increasing the technical indicator that liquid phase extraction mouth changes bottom product under the steady state operation; Remove the lightweight component in the viscid bitumen in advance, thereby the light component in the liquid-phase product at the bottom of the tar distillation Tata is separated; Removed the drawback that bottom product repeats to process from.
For realizing above-mentioned purpose, the utility model is realized through following technical scheme:
Novel coke tar distillation tower; Comprise tower body, feed(raw material)inlet, cat head carbolic oil gaseous phase outlet, carbolic oil liquid-phase reflux inlet, naphtalene oil extraction mouth, washing oil extraction mouth, a carbolineum extraction mouth, anthracene oil extraction mouth, column plate, mid-temperature pitch relief outlet; It is characterized in that; Described coke tar distillation tower tower body bottom has increased stage number, and anthracene oil extraction mouth is positioned at the tower body sidepiece; The mid-temperature pitch relief outlet is positioned at tower still bottom.
The column plate quantity of described coke tar distillation tower is the 62-75 piece; Described liquid phase material extraction mouth is arranged at apart from tar distillation column overhead 60-71 piece column plate place.
Compared with prior art, the beneficial effect of the utility model is:
1) need not extra increase thermal load, simple to operate;
2) increase device relatively with independent, significantly reduced floor space, saved investment the lightweight component extracting in the viscid bitumen;
3) the mid-temperature pitch technical indicator that obtains in the production is good;
4) thus improve and to obtain the preparation that the anthracene oil product is widely used in oil fuel and aseptic production.
Description of drawings
Fig. 1 is the structural representation of prior art coke tar distillation tower;
Fig. 2 is the utility model coke tar distillation tower structural representation.
Among the figure: mid-temperature pitch products export 6-tower body 7-naphtalene oil outlet 8-washing oil outlet 9-one carbolineum outlet 10-column plate 11-anthracene oil outlet at the bottom of the 5-tower of 1-carbolic oil gaseous phase outlet 2-carbolic oil liquid-phase reflux inlet 3-tar inlet tube furnace 4-dehydrated tar feed(raw material)inlet
Embodiment
See Fig. 1; Existing coke tar distillation tower; Dehydrated tar extracts after remaining moisture content and the light oil through dehydration tower, gets into the tar distillation tower bottom through the tube furnace heating, and cat head is produced carbolic oil and cooled off the back simultaneously as refluxing; The tower body side line is extraction naphtalene oil, washing oil (moderate heavy oil), a carbolineum successively, extraction soft pitch at the bottom of the tower.Naphtalene oil is apart from 16～20 tower trays of cat head; Washing oil is apart from 32～38 tower trays of cat head; 1 carbolineum is apart from 48～52 tower trays of cat head, and full tower has 54 of column plates.And produce viscid bitumen at the bottom of the tower, also need further flash distillation extracting if need to produce modified pitch in the follow-up workshop section.
See Fig. 2, the utility model has been done improvement to the tar distillation tower structure in the tar distillation workshop section, and the lightweight component that can remove in advance in the viscid bitumen becomes the preparation of anthracene oil product for use in oil fuel and aseptic production, and the input that reduces extras cuts down the consumption of energy.
Novel coke tar distillation tower (Fig. 2) comprises asphaltic products. outlet 5 at the bottom of carbolic oil gaseous phase outlet 1, carbolic oil liquid-phase reflux inlet 2, dehydrated tar feed(raw material)inlet 4, the tower, tower body 6, naphtalene oil outlet 7, washing oil outlet 8, one carbolineum outlet 9, column plate 10, anthracene oil outlet 11.In novel coke tar distillation tower; The tower body bottom has increased stage number; Column plate quantity is the 62-75 piece, sets up liquid phase material anthracene oil outlet 11 at novel coke tar distillation tower sidepiece, apart from 60～71 blocks of column plates of cat head; Through the liquid phase produced quantity of control column bottom temperature and anthracene oil outlet 11, make that liquid-phase product becomes mid-temperature pitch by viscid bitumen at the bottom of the tower.Meanwhile, the tower side line is produced carbolineum and anthracene oil simultaneously.
The concrete operations parameter of the utility model is following:
1) tar at the bottom of the dehydration tower with dehydration tower at the bottom of extractor pump extract out, through the pitch heat exchanger, carry out heat exchange with the pitch that comes at the bottom of the king-tower tower, be warmed up to about 240 ℃ of entering process furnace;
2) tar is heated to about 370 ℃ through process furnace convection tubes and radiator tube;
3) tar through process furnace heating entering king-tower distillates carbolic oil from cat head, and the king-tower distillation is a decompression operation, and the top of tower pressure-controlling is regulated by the nitrogen amount that feeds vacuum tank at 26KPa;
4) be about 180 ℃ from side line extraction naphtalene oil successively;
5) the side line washing oil is about 230 ℃;
6) side line 1 carbolineum is about 280 ℃;
7) side line 2 carbolineums are about 320 ℃;
8) remaining at the bottom of the tower is the about 85 ℃ mid-temperature pitch of softening temperature, and its extraction temperature is about 360 ℃.
Claims (2)
1. novel coke tar distillation tower; Comprise tower body, feed(raw material)inlet, cat head carbolic oil gaseous phase outlet, carbolic oil liquid-phase reflux inlet, naphtalene oil extraction mouth, washing oil extraction mouth, a carbolineum extraction mouth, anthracene oil extraction mouth, column plate, mid-temperature pitch relief outlet; It is characterized in that; The column plate quantity of described coke tar distillation tower is the 62-75 piece, and anthracene oil extraction mouth is positioned at the tower body sidepiece; The mid-temperature pitch relief outlet is positioned at tower still bottom.
2. novel coke tar distillation tower according to claim 1 is characterized in that, described anthracene oil extraction mouth is arranged at apart from 60-71 piece column plate place, distillation tower top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200443082U CN202482271U (en) | 2012-02-10 | 2012-02-10 | Novel tar distillation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200443082U CN202482271U (en) | 2012-02-10 | 2012-02-10 | Novel tar distillation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482271U true CN202482271U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200443082U Expired - Lifetime CN202482271U (en) | 2012-02-10 | 2012-02-10 | Novel tar distillation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202482271U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433762A (en) * | 2016-09-09 | 2017-02-22 | 武汉钢铁股份有限公司 | Production method of coal-series fuel oil |
| CN109355082A (en) * | 2018-12-04 | 2019-02-19 | 中冶焦耐(大连)工程技术有限公司 | A kind of material filling type coke tar distillation tower |
| CN113559541A (en) * | 2021-08-09 | 2021-10-29 | 中冶焦耐(大连)工程技术有限公司 | Process and system for recovering light components in heavy benzene by using waste heat of medium-temperature asphalt |
| CN114015468A (en) * | 2021-11-30 | 2022-02-08 | 宝钢化工湛江有限公司 | Method and system for producing modified asphalt and carbon black oil from coal tar |
-
2012
- 2012-02-10 CN CN2012200443082U patent/CN202482271U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433762A (en) * | 2016-09-09 | 2017-02-22 | 武汉钢铁股份有限公司 | Production method of coal-series fuel oil |
| CN109355082A (en) * | 2018-12-04 | 2019-02-19 | 中冶焦耐(大连)工程技术有限公司 | A kind of material filling type coke tar distillation tower |
| CN109355082B (en) * | 2018-12-04 | 2024-03-19 | 中冶焦耐(大连)工程技术有限公司 | Packing type tar distillation tower |
| CN113559541A (en) * | 2021-08-09 | 2021-10-29 | 中冶焦耐(大连)工程技术有限公司 | Process and system for recovering light components in heavy benzene by using waste heat of medium-temperature asphalt |
| CN114015468A (en) * | 2021-11-30 | 2022-02-08 | 宝钢化工湛江有限公司 | Method and system for producing modified asphalt and carbon black oil from coal tar |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
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| CX01 | Expiry of patent term |