CN102703102A - Combined process for producing asphalt by Lvda crude oil - Google Patents
Combined process for producing asphalt by Lvda crude oil Download PDFInfo
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- CN102703102A CN102703102A CN2012101480524A CN201210148052A CN102703102A CN 102703102 A CN102703102 A CN 102703102A CN 2012101480524 A CN2012101480524 A CN 2012101480524A CN 201210148052 A CN201210148052 A CN 201210148052A CN 102703102 A CN102703102 A CN 102703102A
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Abstract
The invention discloses a combined process for producing asphalt by Lvda crude oil. The method comprises the steps of (1) heating the crude oil to 360-370 DEG C by a normal pressure furnace, and adding the crude oil to a normal pressure tower to obtain naphtha, regular-first-line oil, regular-second-line oil and regular-third-line oil by separation; remaining normal pressure residual oil at the bottom of the tower; (2) adding the normal pressure residual oil to a visbreaking heating furnace; when warming to 400-425 DEG C, adding the normal pressure residual oil to a visbreaking reactor; reacting for 50-70 minutes to obtain oil generated by visbreaking; (3) adding the oil generated by visbreaking in to a visbreaking fractionating column, cooling the temperature of the fluid in at the bottom of the tower to 365 DEG C, separating to obtain the naphtha and visbreaking line detection oil, and remaining the visbreaking residual oil at the bottom of the tower; and (4) adding the normal pressure residual oil to a vacuum furnace, heating up to 375-386 DEG C, adding the residual oil to a vacuum tower, separating out vacuum cut 1 oil, vacuum cut 2 oil, vacuum cut 3 oil and vacuum cut 4 oil to obtain asphalt at the bottom of the vacuum tower. Compared with the prior asphalt production process, with the adoption of the combined process, the reaction time is shortened to 50-70 minutes, the yield of the light oil is improved by 6-8% and asphalt with different types can be flexibly produced by regulating the visbreaking temperature.
Description
Technical field
The present invention relates to a kind of PRODUCTION OF PITCH technology, relate in particular to a kind of combination process that adopts Luda crude production petroleum pitch.
Background technology
Along with rapid economy development, the doctor negative crude resources of lightweight is more and more deficienter, the deep processing of heavy high-sulfur crude oil with make full use of the pressing problem that becomes the necessary solution of oil refining enterprise institute.With the ocean naphthenic base crude is that raw material production pitch mainly is directly to pull out technology through normal decompression to obtain at present, but can produce naphthenic base Crude oil from CNOOC qualified, high softening point bitumen through this technology has only Suizhong crude oil.Luda crude oil is a kind of low-sulfur naphthenic base crude; The pitch softening point that this crude oil directly pulls out explained hereafter through normal decompression is low, penetration degree is high, can't satisfy the various indexs of high-quality bituminous, therefore is of limited application; Low in economic efficiency, this also is a kind of great waste to limited petroleum resources.Therefore, improving the bituminous quality through improving PRODUCTION OF PITCH technology, thereby enlarge the asphalt stock resource, is the important channel of realizing Luda crude oil comprehensive development and utilization.
" a kind of wax drop method that is used for petroleum pitch production " of application number 201010511479.7 discloses a kind of normal pressure fractionation-wax drop processing-vacuum fractionation combination process that a kind of mode through wax drop improves asphalt quality.Compare with common process, the pitch wax drop effect of this technology gained is obvious, and quality also has improvement.Yet still there are some problems in this technology: the reactor volume of (1) this wax drop process using is huge, is easy to generate the reaction dead angle, and it is insufficient to cause wax drop to be handled; (2) because the wax drop reactor volume is huge, cause the wax drop process treatment time to reach 1.5-4 hour, processing efficiency is low, thereby has influenced treatment capacity and economic benefit; (3) temperature of this technology wax drop reaction is low, and the lightweight oil mass of generation is less, and the visbreaking separation column that the lightweight oil that produces in the wax drop reaction is separated is not set, and the yield of lightweight oil does not obviously improve; (4) because wax drop splitting gas and a small amount of light constituent separate through separation column promptly gets into vacuum distillation tower and can cause the fluctuation of reduced vacuum degree; Cause the vacuum distillation tower operation unstable; Influence the vacuum distillation tower deep drawing; And the residence time of wax drop reaction is long, therefore is difficult to produce the pitch of multiple model flexibly, to satisfy many-sided demand.
Summary of the invention
The present invention is directed to the problem in the process for preparing asphalt, a kind of combination process that adopts Luda crude production petroleum pitch be provided, this process makes full use Luda crude resources, improved the bituminous quality, and further increased economic benefit.
Technical scheme of the present invention: a kind of employing Luda crude production bituminous combination process may further comprise the steps:
(1) crude oil is heated to 360-370 ℃ through atmospheric pressure kiln, gets into atmospheric tower, separates to obtain petroleum naphtha, normal line oil, normal two wires oil and atmosphere 3rd side cut oil, and long residuum is stayed at the bottom of the tower;
(2) long residuum gets into the visbreaking process furnace, when temperature rises to 400-425 ℃, gets into the visbreaking reactor drum, and reaction is 50-70 minute under 400-425 ℃ temperature condition, obtains the visbreaking reaction and generates oil;
(3) the visbreaking reaction generates oil and directly gets into the visbreaking separation column, goes into quenching oil in the tower rising pouring, and the bottom stream temperature is reduced to about 365 ℃, separates obtaining visbreaking petroleum naphtha and visbreaking side line oil, and visbreaking residue is stayed at the bottom of the tower;
(4) vacuum residuum gets into vacuum furnace, is heated to 375-386 ℃, gets into vacuum distillation tower, isolates first vacuum side stream, second line of distillation oil, subtracts third fractional oil and subtracts four lines oil, and VACUUM TOWER BOTTOM is pitch.
Preferably, when the temperature of said step (2) visbreaking reaction was 405-410 ℃, gained pitch was 90#.
Preferably, when the temperature of said step (2) visbreaking reaction was 410-420 ℃, gained pitch was 70#.
Preferably, when the temperature of said step (2) visbreaking reaction was 420-425 ℃, gained pitch was 50#.
Beneficial effect of the present invention is, compares with existing process for preparing asphalt, and the improvement of following several respects is arranged: the upflow visbreaking reactor drum of short band sieve tray of the residence time is adopted in (1), and material is evenly distributed, and shortens the reaction times to 50-70 minute.(2) temperature of visbreaking reaction is brought up to 400-425 ℃ and produced a certain amount of lightweight oil, and set up the visbreaking separation column and separate, the output of lightweight oil has been improved 6-8%.(3) visbreaking temperature of reaction 400-425 ℃ condensation reaction also takes place when cracking reaction takes place, and condensation reaction has increased the content of pitch medium pitch matter, can realize with Luda crude oil being the heavy duty road asphalt of the multiple model of raw material production through the decompression deep drawing.(4) isolate the load that visbreaking petroleum naphtha, visbreaking side line oil can effectively reduce vacuum distillation tower through the visbreaking separation column is set, guarantee vacuum distillation tower vacuum tightness and stable operation.(5) the visbreaking stove takes to annotate the remarkable gear coking of compound scorch retarder technology, the promotion cracking that is re-dubbed by stopper, dispersion agent, hydrogen supply agent, improves the coking temperature more than 10 ℃, prolongs on-stream time, realizes the LP continuous production.
Embodiment
Embodiment 1
A kind of employing Luda crude production bituminous combination process may further comprise the steps:
(1) crude oil is heated to 360 ℃ through atmospheric pressure kiln, gets into atmospheric tower, separates to obtain petroleum naphtha, normal line oil, a normal line oil and atmosphere 3rd side cut oil, and long residuum is stayed at the bottom of the tower;
(2) long residuum gets into the visbreaking process furnace, when temperature rises to 405-410 ℃, gets into the visbreaking reactor drum, and reaction is 50-60 minute under 405-410 ℃ temperature condition, obtains the visbreaking reaction and generates oil;
(3) the visbreaking reaction generates oil and directly gets into the visbreaking separation column, goes into cold oil in the tower rising pouring, and the bottom stream temperature is reduced to about 365 ℃, separates obtaining visbreaking petroleum naphtha and visbreaking side line oil, and visbreaking residue is stayed at the bottom of the tower;
(4) vacuum residuum gets into vacuum furnace, is heated to 375-378 ℃, gets into vacuum distillation tower, isolates first vacuum side stream, second line of distillation oil, subtracts third fractional oil and subtracts four lines oil, and VACUUM TOWER BOTTOM is 90# pitch.
Embodiment 2
A kind of employing Luda crude production bituminous combination process may further comprise the steps:
(1) crude oil is heated to 365 ℃ through atmospheric pressure kiln, gets into atmospheric tower, separates to obtain petroleum naphtha, normal line oil, normal two wires oil and atmosphere 3rd side cut oil, and long residuum is stayed at the bottom of the tower;
(2) long residuum gets into the visbreaking process furnace, when temperature rises to 410-420 ℃, gets into the visbreaking reactor drum, and reaction is 55-65 minute under 410-420 ℃ temperature condition, obtains the visbreaking reaction and generates oil;
(3) the visbreaking reaction generates oil and directly gets into the visbreaking separation column, goes into cold oil in the tower rising pouring, and the bottom stream temperature is reduced to about 365 ℃, separates obtaining visbreaking petroleum naphtha and visbreaking side line oil, and visbreaking residue is stayed at the bottom of the tower;
(4) vacuum residuum gets into vacuum furnace, is heated to 378-382 ℃, gets into vacuum distillation tower, isolates first vacuum side stream, second line of distillation oil, subtracts third fractional oil and subtracts four lines oil, and VACUUM TOWER BOTTOM is 70# pitch.
Embodiment 3
A kind of employing Luda crude production bituminous combination process may further comprise the steps:
(1) crude oil is heated to 368 ℃ through atmospheric pressure kiln, gets into atmospheric tower, separates to obtain petroleum naphtha, normal line oil, normal two wires oil and atmosphere 3rd side cut oil, and long residuum is stayed at the bottom of the tower;
(2) long residuum gets into the visbreaking process furnace, when temperature rises to 420-425 ℃, gets into the visbreaking reactor drum, and reaction is 60-70 minute under 420-425 ℃ temperature condition, obtains the visbreaking reaction and generates oil;
(3) the visbreaking reaction generates oil and directly gets into the visbreaking separation column, goes into cold oil in the tower rising pouring, and the bottom stream temperature is reduced to about 365 ℃, separates obtaining visbreaking petroleum naphtha and visbreaking side line oil, and visbreaking residue is stayed at the bottom of the tower;
(4) vacuum residuum gets into vacuum furnace, is heated to 382-386 ℃, gets into vacuum distillation tower, isolates first vacuum side stream, second line of distillation oil, subtracts third fractional oil and subtracts four lines oil, and VACUUM TOWER BOTTOM is 50# pitch.
The yield contrast table of table 1 common process and each component of combination process
The performance perameter of main operational condition of table 2 combination process and asphaltic products.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| The pitch model | 90# | 70# | 50# |
| The atmospheric pressure kiln temperature/℃ | 360 | 365 | 368 |
| The vacuum furnace temperature/℃ | 375 | 380 | 386 |
| The visbreaking furnace temperature/℃ | 405-410 | 410-420 | 420-425 |
| Yield of light oil raising/% | 5.8 | 7.4 | 8.1 |
| Pitch softening point/℃ | 44.5-46.5 | 46.3-46.7 | ＞48.1 |
| Pitch penetration degree/0.1mm | 80-96 | 71-78 | 60 |
Claims (4)
1. one kind is adopted Luda crude production bituminous combination process, it is characterized in that: may further comprise the steps:
(1) crude oil is heated to 360-370 ℃ through atmospheric pressure kiln, gets into atmospheric tower, separates to obtain petroleum naphtha, normal line oil, normal two wires oil and atmosphere 3rd side cut oil, and long residuum is stayed at the bottom of the tower;
(2) long residuum gets into the visbreaking process furnace, when temperature rises to 400-425 ℃, gets into the visbreaking reactor drum, and reaction is 50-70 minute under 400-425 ℃ temperature condition, obtains the visbreaking reaction and generates oil;
(3) the visbreaking reaction generates oil and directly gets into the visbreaking separation column, separates obtaining visbreaking petroleum naphtha and visbreaking side line oil, and visbreaking residue is stayed at the bottom of the tower;
(4) visbreaking residue gets into vacuum furnace, is heated to 375-386 ℃, gets into vacuum distillation tower, isolates first vacuum side stream, second line of distillation oil, subtracts third fractional oil and subtracts four lines oil, and VACUUM TOWER BOTTOM is pitch.
2. a kind of employing according to claim 1 Luda crude production bituminous combination process is characterized in that: when the temperature of said step (2) visbreaking reaction was 405-410 ℃, gained pitch was 90#.
3. a kind of employing according to claim 1 Luda crude production bituminous combination process is characterized in that: when the temperature of said step (2) visbreaking reaction was 415-420 ℃, gained pitch was 70#.
4. a kind of employing according to claim 1 Luda crude production bituminous combination process is characterized in that: when the temperature of said step (2) visbreaking reaction was 420-425 ℃, gained pitch was 50#.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101480524A CN102703102A (en) | 2012-05-15 | 2012-05-15 | Combined process for producing asphalt by Lvda crude oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101480524A CN102703102A (en) | 2012-05-15 | 2012-05-15 | Combined process for producing asphalt by Lvda crude oil |
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| CN102703102A true CN102703102A (en) | 2012-10-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105504837A (en) * | 2015-11-26 | 2016-04-20 | 佛山高富中石油燃料沥青有限责任公司 | Improved low temperature resistant asphalt and making method thereof |
| CN105694492A (en) * | 2016-02-24 | 2016-06-22 | 佛山高富中石油燃料沥青有限责任公司 | Hard asphalt and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260583A (en) * | 2010-05-31 | 2011-11-30 | 王延海 | Combined process for refining base oil through recycle of waste machine oil |
| CN102358846A (en) * | 2011-09-19 | 2012-02-22 | 中国石油天然气股份有限公司 | Visbreaking-coking combined process method by hydrogen generated from heavy oil |
-
2012
- 2012-05-15 CN CN2012101480524A patent/CN102703102A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260583A (en) * | 2010-05-31 | 2011-11-30 | 王延海 | Combined process for refining base oil through recycle of waste machine oil |
| CN102358846A (en) * | 2011-09-19 | 2012-02-22 | 中国石油天然气股份有限公司 | Visbreaking-coking combined process method by hydrogen generated from heavy oil |
Non-Patent Citations (1)
| Title |
|---|
| 刘振清等: "利用混合原油减渣生产100号甲道路沥青技术开发", 《山东化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105504837A (en) * | 2015-11-26 | 2016-04-20 | 佛山高富中石油燃料沥青有限责任公司 | Improved low temperature resistant asphalt and making method thereof |
| CN105694492A (en) * | 2016-02-24 | 2016-06-22 | 佛山高富中石油燃料沥青有限责任公司 | Hard asphalt and production method thereof |
| CN105694492B (en) * | 2016-02-24 | 2018-05-29 | 佛山高富中石油燃料沥青有限责任公司 | A kind of hard grades of bitumen and its production method |
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Application publication date: 20121003 |