CN101676365A - Method for directly producing road asphalt by mild cracking super-heavy crude oil - Google Patents
Method for directly producing road asphalt by mild cracking super-heavy crude oil Download PDFInfo
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- CN101676365A CN101676365A CN200810222391A CN200810222391A CN101676365A CN 101676365 A CN101676365 A CN 101676365A CN 200810222391 A CN200810222391 A CN 200810222391A CN 200810222391 A CN200810222391 A CN 200810222391A CN 101676365 A CN101676365 A CN 101676365A
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Abstract
The invention discloses a method for directly producing high-grade road asphalt by super-heavy crude oil, comprising the following steps: the super-heavy crude oil is heated by a heat exchanger and then enters a dehydrating tower, then enters a heating furnace after a small amount of water-containing gasoline is separated by the dehydrating tower; after being heated to 380-430 DEG C, the super-heavy crude oil is heated by the heating furnace, then enters a mild-cracking reactor and stays in the reactor for 20-120min; the viscosity of the super-heavy crude oil is controlled to be 100-600mm<2>/sat 100 DEG C after mild cracking; and the super-heavy crude oil after mild cracking enters a distillation tower, the temperature is controlled at 410-430 DEG C to separate gasoline, diesel oil and gas oil, and then the high-grade road asphalt is obtained. The yield of light weight oil is increased to 18%, the flash point of asphalt is enhanced to 245 DEG C, the evaporation of asphalt is reduced by 0.8%, the paradox between small needle penetration and high soft softening point of asphalt can not occur again, and all performance indexes of asphalt can meet GB/T15180 index.
Description
Technical field:
The present invention relates to the method for the asphalt for high grade road used by high viscous crude direct production highway in a kind of petroleum refining process.
Background technology:
High viscous crude is meant that density is at 980～1010kg/m
3The very big heavy crude of viscosity is the Liaohe Oil Field in the main place of production of China simultaneously, and the viscous crude of other field produces does not all have this oil property.High viscous crude belongs to doctor negative naphthenic base crude inferior, have than great, viscosity is big, acid number is high, colloid and evident characteristics such as asphalt content height, carbon residue and metals content impurity height, in forming, crude oil do not contain gasoline substantially, only contain a spot of diesel oil, wherein the residual oil more than 90% all belongs to bitumen, but does not reach various bituminous national standards or industry standard.Because the poor quality of this crude oil is exploitation, carry, process all very difficulty.The Liaohe Oil Field has been verified the high viscous crude resource in the seventies in last century, but because oil recovery technique falls behind, the steam flooding production technique occurred up to the nineties in last century, and this crude oil is emersion ground, the early production period this crude oil can only burn as emulsified fuel oil.Find after deliberation, because the wax content of this raw material is low, bituminous matter and gum level height, should can be used as bituminous resource preferably, but with the pitch of traditional technology direct production, flash-point is low, penetration degree is little, softening temperature is high, vaporization losses is big, can't satisfy the industry standard and the national standard requirement of asphalt product, therefore, a spot of the mixing different substances together of this crude oil can only be produced standard compliant pitch in other pitch resources of production.But, developed direct coking process production refinery coke and vapour, diesel oil afterwards, but vapour, diesel oil and the refinery coke produced all compare poor quality, have wasted these valuable pitch resources of production along with the continuous expansion of resource exploitation.Produce bituminous technology and mainly contain distillation method, solvent deasphalting method, residual oil oxidation style and harmonic method, back three kinds of methods can not realize high viscous crude direct production asphalt for high grade road at all, adopt distillation method to produce pitch, and its result is exactly result mentioned above.Therefore, how to develop a kind of new Technology, realize the crude resources of poor quality being made good use of, be necessary very much by high viscous crude direct production asphalt for high grade road.
In recent years, along with the development of national economy, road construction and urban construction development are rapid, and the particularly high-grade bituminous usage quantity of road bitumen is increasing year by year, and the resources of production of road asphalt have not satisfied the demand in domestic pitch market.China all wants a large amount of pitch of import (1/4) every year, is to find suitable crude resources owing to produce the bituminous prerequisite, and the research of various countries thinks that all the naphthenic base crude of low wax is to produce the better raw material of bituminous.The naphthenic base crude resource accounts for about 2% of world's crude oil reserves, low wax just still less, this high viscous crude that the Liaohe Oil Field produces just possessed these characteristics.But when adopting traditional distillation method to produce asphalt for high grade road, because its light, middle component is few, the pitch flash-point of production is low, penetration degree is little, the softening temperature height, and vaporization losses is big, does not satisfy the request of national standard of GB/T15180 asphalt for high grade road.So purpose of the present invention, make full use of the rarer in the world pitch resources of production, seek a new Technology and a route that is suitable for high viscous crude direct production asphalt for high grade road series product, overcome distillation method and produce the contradiction of all many-sides such as the flash-point of pitch existence, penetration degree, softening temperature, vaporization losses, maximally utilise domestic resource and produce the needed asphalt for high grade road of highway division, to satisfy the needs of national economy high speed development.
Summary of the invention:
The objective of the invention is the shallow degree cracking of high viscous crude, select low temperature, long residence time, perhaps high temperature, short residence time(SRT), reach the purpose that realizes that the pitch medium molecular substance increases, control the shallow degree cracked of the super viscous crude degree of depth, guaranteeing to choose shallow degree cracked condition under the qualified prerequisite of the every performance index of pitch.
The method of directly producing road asphalt by mild cracking super-heavy crude oil of the present invention is to enter dehydration tower after high viscous crude is heated through interchanger, after dehydration tower is isolated a small amount of moisture gasoline, enters into process furnace; After the process process furnace is heated to 380～430 ℃, enter shallow degree cracking case, stop 20～120min in reactor, 100 ℃ of viscosity are at 100～600mm after the shallow degree cracking of control high viscous crude
2/ s; Enter distillation tower then, controlled temperature 410-430 ℃ isolate gasoline, diesel oil and gas oil after, obtain asphalt for high grade road.
The effect of invention:
High viscous crude is when each trade mark series product of asphalt for high grade road that shallow degree cracking distillation is produced, and the temperature cut point of crude oil can be brought up to 420 ℃ from 350 ℃.Yield of light oil can bring up to 18% from 8%, economic benefit can improve greatly in the course of processing, the bituminous flash-point can be from bringing up to below 230 ℃ more than 245 ℃ simultaneously, bituminous vaporization losses is from having dropped to more than 1.3% below 0.8%, the contradiction that penetration degree is little, softening temperature is high no longer appears in pitch, and the every performance technologies index of pitch satisfies every performance index of GB/T15180 asphalt for high grade road fully.
Description of drawings:
Fig. 1 is the process flow sheet of the shallow degree cracking of high viscous crude direct production asphalt for high grade road.
Wherein: 1, high viscous crude pipe 2, moisture fuel dispensing outlet 3, boiler tube import 4, process furnace 5, outlet pipe 6, outlet 7, shallow degree cracking case 8, import 9, fuel dispensing outlet 10, diesel oil outlet 11, gas oil outlet 12, distillation tower 13, pitch export 14 imports 15, outlet 16, dehydration tower 17, import 18, interchanger
Embodiment
The device of directly producing road asphalt by mild cracking super-heavy crude oil of the present invention is to be made of interchanger 18, dehydration tower 16, process furnace 4, shallow degree cracking case 7 and distillation tower 12; High viscous crude 1 pipe is connected with the import 17 that is positioned at the dehydration tower middle part by interchanger 18, the dehydration tower top is provided with moisture fuel dispensing outlet 2, the dehydration tower outlet at bottom is connected with process furnace 4 boiler tube imports 3, furnace outlet pipe 5 is connected with the import 14 that is positioned at shallow degree cracking case 7 bottoms, shallow degree cracking case outlet 6 is positioned at the top, be connected with the import 8 that is positioned at distillation tower 12 middle parts by pipe connecting, fuel dispensing outlet 9 is positioned at the distillation tower cat head, diesel oil outlet 10 and gas oil outlet 11 are positioned at the distillation tower side, and pitch outlet 13 is positioned at the distillation tower bottom.
As can be seen from the figure, high viscous crude is through behind the interchanger, after dehydration tower is isolated a small amount of moisture gasoline, enter into process furnace, after the process process furnace is heated to 380～430 ℃, enter shallow degree cracking case, after in reactor, being docked to 20～120min, advance distillation tower, isolate gasoline, diesel oil and gas oil after, control the operation of distillation tower well, remaining residual oil is exactly asphalt for high grade road.
Embodiment 1-5:
It is raw material that table 1 has been listed the high viscous crude of producing with the Liaohe Oil Field, under the technical process of Fig. 1, according to the experimental result that the condition of the differing temps in the above-mentioned explanation, the residence time is carried out, listed the main character after the shallow degree cracking of high viscous crude in the table and the main character of the asphalt for high grade road produced by the distillation back.Table 2 has been listed the character that full scale plant adopts the product that this technology produces, and the technical requirements of asphalt for high grade road is satisfied in the requirement of contrast GB/T15180 fully.
The shallow degree cracking of table 1 Liaohe River high viscous crude direct production asphalt for high grade road laboratory study example
The shallow degree cracking of table 2 Liaohe River high viscous crude direct production asphalt for high grade road examples of industrial application and national standard
Claims (1)
1. the method for a directly producing road asphalt by mild cracking super-heavy crude oil is characterized in that: enter dehydration tower after high viscous crude is heated through interchanger, after dehydration tower is isolated a small amount of moisture gasoline, enter into process furnace; After the process process furnace is heated to 380～430 ℃, enter shallow degree cracking case, stop 20～120min in reactor, 100 ℃ of viscosity are at 100～600mm after the shallow degree cracking of control high viscous crude
2/ s; Enter distillation tower then, controlled temperature 410-430 ℃ isolate gasoline, diesel oil and gas oil after, obtain asphalt for high grade road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810222391A CN101676365A (en) | 2008-09-18 | 2008-09-18 | Method for directly producing road asphalt by mild cracking super-heavy crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810222391A CN101676365A (en) | 2008-09-18 | 2008-09-18 | Method for directly producing road asphalt by mild cracking super-heavy crude oil |
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| Publication Number | Publication Date |
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| CN101676365A true CN101676365A (en) | 2010-03-24 |
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| CN200810222391A Pending CN101676365A (en) | 2008-09-18 | 2008-09-18 | Method for directly producing road asphalt by mild cracking super-heavy crude oil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839009A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing heavy traffic road asphalt by using super heavy oil |
| CN102839015A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN102839017A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt |
| CN103045281A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for increasing content of asphaltene in low-asphaltene raw materials |
| CN103865557A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Building asphalt preparation method |
-
2008
- 2008-09-18 CN CN200810222391A patent/CN101676365A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045281A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for increasing content of asphaltene in low-asphaltene raw materials |
| CN103045281B (en) * | 2011-10-17 | 2014-08-06 | 中国石油天然气股份有限公司 | Method for increasing content of asphaltene in low-asphaltene raw materials |
| CN102839009A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing heavy traffic road asphalt by using super heavy oil |
| CN102839015A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN102839017A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt |
| CN102839015B (en) * | 2012-09-18 | 2014-10-15 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN102839017B (en) * | 2012-09-18 | 2015-05-13 | 中国石油天然气股份有限公司 | Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt |
| CN103865557A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Building asphalt preparation method |
| CN103865557B (en) * | 2012-12-10 | 2015-10-28 | 中国石油天然气股份有限公司 | A kind of preparation method of building asphalt |
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Application publication date: 20100324 |