CN204097412U - The system of gasoline, diesel oil and pitch is produced in a kind of crude oil with poor quality lighting - Google Patents
The system of gasoline, diesel oil and pitch is produced in a kind of crude oil with poor quality lighting Download PDFInfo
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- CN204097412U CN204097412U CN201420209760.9U CN201420209760U CN204097412U CN 204097412 U CN204097412 U CN 204097412U CN 201420209760 U CN201420209760 U CN 201420209760U CN 204097412 U CN204097412 U CN 204097412U
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- 239000010779 crude oil Substances 0.000 title claims abstract description 70
- 239000003502 gasoline Substances 0.000 title claims abstract description 29
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 27
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 74
- 238000012545 processing Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 39
- 239000010426 asphalt Substances 0.000 claims abstract description 30
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 11
- 230000023556 desulfurization Effects 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 58
- 238000000926 separation method Methods 0.000 claims description 24
- 238000000638 solvent extraction Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000011295 pitch Substances 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 5
- 239000010771 distillate fuel oil Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 73
- 239000002994 raw material Substances 0.000 description 23
- 239000000047 product Substances 0.000 description 17
- 230000003197 catalytic effect Effects 0.000 description 14
- 239000002002 slurry Substances 0.000 description 14
- 229910021536 Zeolite Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 8
- 238000002203 pretreatment Methods 0.000 description 8
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
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- 239000000470 constituent Substances 0.000 description 4
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- 230000008929 regeneration Effects 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
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- 239000004615 ingredient Substances 0.000 description 2
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- 239000004113 Sepiolite Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
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- 239000002737 fuel gas Substances 0.000 description 1
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- -1 polynite Chemical compound 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 229910000275 saponite Inorganic materials 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model discloses the system that gasoline, diesel oil and pitch are produced in a kind of crude oil with poor quality lighting, crude oil with poor quality pretreatment unit, heavy feed stock processing unit, catalysis lighting unit and gas desulfurization unit organic assembling are got up by this system, crude oil with poor quality can be converted into greatest extent the light Fuel oil product (gasoline and diesel oil) of high-quality and the high-grade heavy traffic paving asphalt of wide market, meet multi-field development need, and the technical process of this system simplification, reduce overall energy consumption.
Description
Technical field
The utility model belongs to oil refining, petrochemical complex, coal chemical technology, relate to a kind of system of crude oil with poor quality lighting, specifically by the lighting system of crude oil with poor quality pretreatment unit, heavy feed stock processing unit, catalysis lighting unit and gas desulfurization unit organic assembling.
Background technology
Along with worldwide oil property becomes heavy, becomes bad, and the requirement of sustained economic development and the increasingly stringent of environmental regulation, the demand of people to light clean fuel is increasing, these all require to improve existing oil Refining Technologies, produce satisfactory product with minimum cost processing crude oil with poor quality.
Because crude oil with poor quality viscosity is high, higher than great, heavy metal and sulphur content and colloid, bituminous matter, utilize existing oil Refining Technologies to carry out crude oil with poor quality processing, the unfavorable factor such as there is gasoline and diesel yield is low, and heat energy loss is large, and facility investment is high.According to the feature of crude oil with poor quality, employ new technology, crude oil with poor quality is changed into light-end products to greatest extent, and simplification of flowsheet, reduce overall energy consumption, China's sustained economic development is of great importance.
Along with developing by leaps and bounds of automobile industry of China and motorway, the total quantity consumed of China's heavy traffic paving asphalt also presents and increases substantially.Current domestic heavy traffic paving asphalt also needs a large amount of import, and utilizing crude oil with poor quality to produce heavy traffic paving asphalt has definite meaning to meeting China's Economic development.
Patent CN1746265A discloses a kind of complete processing of poor-quality oil catalytic cracking.The solar oil cut Returning catalyticing cracking device that inferior oil material obtains through catalytic cracking carries out freshening, and the heavy gas oil cut obtained carries out solvent extraction, the heavy aromatics extracted as product, Returning catalyticing cracking device freshening of raffinating oil.This processing method is abundant not to crude oil with poor quality lighting, does not make full use of catalytically cracked oil.
Existing system is abundant not to crude oil with poor quality lighting, does not make full use of catalytically cracked oil, and, be difficult to carry out fully effective utilization to vacuum residuum, high-grade heavy traffic paving asphalt can not be produced.
Summary of the invention
The purpose of this utility model is on prior art basis, there is provided a kind of by the lighting system of crude oil with poor quality pre-treatment, heavy feed stock process, catalysis lighting and gas desulfurization unit organic assembling, to greatest extent crude oil with poor quality is changed into the high-grade heavy traffic paving asphalt of light-end products and China's urgent need, simplification of flowsheet, reduces overall energy consumption.
The purpose of this utility model is achieved in the following ways:
A system for gasoline, diesel oil and pitch is produced in crude oil with poor quality lighting, and this system comprises crude oil with poor quality pretreatment unit, gas sweetening unit, heavy feed stock processing unit and catalysis lighting unit;
Crude oil with poor quality pretreatment unit is connected with heavy feed stock processing unit, catalysis lighting unit and gas sweetening unit respectively by pipeline;
Heavy feed stock processing unit is connected with catalysis lighting unit by pipeline;
Catalysis lighting unit is connected with gas sweetening unit by pipeline.
Crude oil with poor quality pretreatment unit comprises stock oil storage tank, electrical desalter, interchanger, process furnace and atmospheric fractional tower; Multiple outlets of the atmospheric fractional tower of crude oil with poor quality pretreatment unit connect gas sweetening unit, catalysis lighting unit and heavy feed stock processing unit respectively by pipeline; The entrance of atmospheric fractional tower connects process furnace.
Heavy feed stock processing unit comprises solvent extraction apparatus and mixing asphalt device.
Catalysis lighting unit comprises reactor, catalyst regenerator and separation column; Multiple outlets of the atmospheric fractional tower of crude oil with poor quality pretreatment unit connect the gas desulphurisation plant of gas sweetening unit, the catalyticreactor of catalysis lighting unit, the solvent extraction apparatus of heavy feed stock processing unit respectively by pipeline.
The outlet of the solvent extraction apparatus in heavy feed stock processing unit is connected by the entrance of pipeline with the reactor of catalysis lighting unit, the entrance of solvent extraction apparatus is connected with the outlet of the separation column of catalysis lighting unit, and the mixing asphalt device in heavy feed stock processing unit is connected with the outlet of the separation column of catalysis lighting unit.
The separation column of catalysis lighting unit is connected by the gas desulphurisation plant of pipeline with gas desulfurization unit, and the entrance of the separation column of catalysis lighting unit connects the outlet of catalyticreactor.
Steam heating coil is established in described stock oil storage tank.
Said system can realize the method that gasoline, diesel oil and pitch are produced in crude oil with poor quality lighting, and the method comprises crude oil with poor quality pre-treatment, heavy feed stock process, catalysis lighting and gas sweetening process, and concrete steps are as follows:
The pre-treatment of (a) crude oil with poor quality: crude oil with poor quality is carried out wash, desalination, dehydration and de-solid, heat exchange is to 200 DEG C ~ 240 DEG C, be heated to 360 DEG C ~ 390 DEG C by process furnace again, enter separation column: isolate gas, gasoline, diesel oil, 330 DEG C ~ 350 DEG C atmospheric gas oils and > 350 DEG C of residual oil;
(b) heavy feed stock process: > step (a) obtained 350 DEG C of residual oil are in harmonious proportion through solvent extraction and pitch and obtain catalysis lighting raw material and asphalt for high grade road;
(c) catalysis lighting: 330 DEG C ~ 350 DEG C atmospheric gas oils that catalysis lighting raw material step (b) obtained and step (a) obtain, under the effect of catalyzer, cracking reaction occur, thus obtain dry gas, liquefied gas, gasoline, diesel oil and catalytic slurry; Catalytic slurry carries out the heavy feed stock process of step (b);
(d) gas sweetening: the dry gas that the isolated gas of step (a) and step (c) obtain carries out desulfurization respectively.
Above-mentioned crude oil with poor quality is paraffinic base crude oil with poor quality or middle coalite tar or the paraffinic base crude oil with poor quality containing middle coalite tar.Above-mentioned paraffinic base crude oil with poor quality is the paraffinic base crude oil with poor quality that at the original reservoir temperature, degas oil viscosity is 10000 ~ 50000mPa.s, relative density is greater than 0.93, sulphur content is greater than 2.0%; The pyrolysis temperature of described middle coalite tar is respectively 700 DEG C ~ 900 DEG C and 500 DEG C ~ 700 DEG C.
In the utility model step (b), solvent extraction adopts conventional hybrid C 4 to make solvent, and adopt lower working pressure, extraction temperature is 90 DEG C ~ 140 DEG C, and extraction pressure is 2.8MPa ~ 4.2MPa, and solvent ratio is 4:1 ~ 7:1.Deasphalted oil yield reaches 70 ~ 85%, and carbon residue is low to moderate 1.8 ~ 2.5%, and Ni, V content is low; Solvent recuperation adopts supercritical process, and recycling design temperature is high, and plant energy consumption is low.If pitch attemperation apparatus, make pitch mediation raw material with catalytic slurry, during the pitch obtained 25 DEG C, penetration degree is 40 ~ 140 (0.1mm), and softening temperature is 40 ~ 55 DEG C, ductility > 150cm when 15 DEG C.
The catalyzer adopted in step (c) is one or more in molecular sieve, heat-resistant inorganic oxide, molecular sieve and clay composition, heat-resistant inorganic oxide and clay composition, molecular sieve, heat-resistant inorganic oxide and clay composition; Preferred catalyst is one or more in molecular sieve.Molecular screening is self-contained or do not contain the y-type zeolite of rare earth element, contain or do not contain ultrastable Y－type zeolite, the supersiliceous zeolite with five-membered ring structure, the β zeolite of rare earth element, one or more in mordenite, omega zeolite, the supersiliceous zeolite preferably with five-membered ring structure is ZSM-5 zeolite or ZRP zeolite; Heat-resistant inorganic oxide is selected from one or more in aluminum oxide, silicon oxide, amorphous silicon aluminium, zirconium white, titanium oxide, boron oxide and alkaline earth metal oxide; Clay is selected from one or more in kaolin, halloysite, polynite, diatomite, halloysite, saponite, tired de-soil, sepiolite, attapulgite, hydrotalcite and boron-moisten soil.Preferred molecular sieve cracking catalyst, its activity is high, and green coke amount is few, and gasoline yield is high, transformation efficiency is high.
In step (c), cracking reaction condition is: temperature of reaction 470 DEG C ~ 550 DEG C, regeneration temperature 600 DEG C ~ 800 DEG C, the mass ratio 3 ~ 18 of catalyzer and stock oil, reaction times 0.5s ~ 5s, pressure 0.1MPa ~ 0.5MPa.
First crude oil with poor quality dewatered under 80 DEG C ~ 140 DEG C conditions in step (a), carry out again after solid settlement washing, desalination, dehydration and de-solid.
Aforesaid method step (a) because of colloid in crude oil with poor quality, asphalt content high, light constituent is few, described crude oil with poor quality pretreatment unit adopts " stove one tower " flow process, is made up of major equipments such as stock oil storage tank, electrical desalter, interchanger, process furnace and atmospheric fractional towers.Crude oil with poor quality is heated to 80 ~ 140 DEG C in stock oil storage tank, enter electrical desalter, after washing, desalination, dehydration and de-solid with processed oil heat exchange to 200 ~ 240 DEG C (1.2 ~ 1.7MPa) with being pumped to process furnace, be heated to 360 ~ 390 DEG C and enter atmospheric fractional tower.Isolated gas enters gas sweetening unit, and isolated gasoline and diesel oil deliver to hydro-refining unit as outside product; Isolate 330 ~ 350 DEG C of atmospheric gas oils and enter catalysis lighting unit, isolated >350 DEG C residual oil enters heavy feed stock processing unit.Distill difference with conventional atmospheric to be to add 330 ~ 350 DEG C of atmospheric gas oils and >350 DEG C of residual oil separation function, last running is divided into catalysis lighting raw material and heavy feed stock process stock oil.The basis meeting catalysis lighting ingredient requirement reduces the treatment capacity of heavy feed stock processing unit, reaches the object of saving process cost and energy consumption.
The utility model heavy feed stock processing unit is made up of solvent extraction apparatus and mixing asphalt device, and colloid, bituminous matter, through solvent extraction, are deviate from by >350 DEG C of residual oil, obtain catalysis lighting raw material and de-oiled asphalt.Catalysis lighting unit sent into by catalysis lighting raw material, and de-oiled asphalt enters mixing asphalt device, makes pitch mediation raw material, the asphalt for high grade road of production wide market with catalytic slurry.
The utility model catalysis lighting unit is primarily of reactor, catalyst regenerator, and separation column forms.Fcc raw material enters reactor, under the effect of catalyzer, cracking reaction occurs, and macromole is cracked into small molecules, long-chain is fractured into short chain.Reaction product enters separation column, obtains dry gas, liquefied gas, gasoline, diesel oil and catalytic slurry through fractionation.Dry gas enters gas sweetening unit, and liquefied gas, gasoline, diesel oil go out device as product, and catalytic slurry enters heavy feed stock processing unit.Catalyzer enters catalyst regenerator after participating in reaction, turns back to reactor and continue to use after coke burning regeneration.
Gas sweetening unit is all sent in crude oil with poor quality pre-treatment in the utility model, catalysis lighting unit institute aerogenesis body.Gas sweetening processed gas that unit produces is used as furnace fuel or sells as product, and the ethene in dry gas can be used for synthesizing styrene etc.Crude oil with poor quality quality examination is according to (the mensuration potentiometric titration of GB/T18609-2011 acid value for crude oil; The mensuration of wax, colloid, asphalt content in SY/T7550-2012 crude oil; GB/T17280-2009 crude distillation standard test methods 15-theoretical stage distillation column; GB/T17280-2009 crude distillation standard test methods 15-theoretical stage distillation column) to carry out, the equipment that the utility model is not described in detail and working method all can realize according to this area general knowledge.
The beneficial effects of the utility model compared with the prior art:
(1) crude oil with poor quality pre-treatment, heavy feed stock process, catalysis lighting and gas desulfurization unit organic assembling are got up by the utility model, crude oil with poor quality can be converted into greatest extent the light Fuel oil product (gasoline and diesel oil) of high-quality and the high-grade heavy traffic paving asphalt of wide market.Product category is many, can meet multi-field development need, and can simplification of flowsheet, reduces overall energy consumption.
(2) crude oil with poor quality pretreatment unit adds 330 ~ 350 DEG C of atmospheric gas oils and >350 DEG C of residual oil separation function, last running is divided into catalysis lighting raw material and heavy feed stock process raw material.The basis meeting catalysis lighting ingredient requirement reduces the treatment capacity of heavy feed stock processing unit, reaches the object of saving process cost and energy consumption.
(3) last running is fractionated into 330 ~ 350 DEG C of atmospheric gas oils and >350 DEG C of residual oil by crude oil with poor quality pretreatment unit.330 ~ 350 DEG C of atmospheric gas oils enter catalysis lighting unit, the >350 DEG C of residual oil that should not be used as catalysis lighting raw material is used further to catalysis lighting unit raw material after heavy feed stock processing unit processes, both improved the yield of gasoline, diesel oil, and again reduced the technical difficulty of catalysis lighting and extend the operational cycle of catalysis lighting unit.
(4) heavy constituent of catalysis lighting unit is delivered to heavy feed stock processing unit, the treated condensed ring deviating to contain and polycyclic aromatic hydrocarbons, add the raw material of catalysis lighting unit, simultaneously, the condensed ring that the heavy constituent of catalysis lighting unit contains and polycyclic aromatic hydrocarbons enter in pitch, improve the quality of pitch.
(5) heavy feed stock processing unit establishes mixing asphalt device, and make pitch mediation raw material with catalytic slurry, improve the quality of pitch, the asphalt for high grade road of production wide market, adds product category.
(6) crude oil with poor quality pre-treatment, catalysis lighting unit institute aerogenesis body all enter thionizer, can be used as furnace fuel, at utmost make use of system internal product after deviating from H2S.
(7) crude oil with poor quality pre-treatment, heavy feed stock process, catalysis lighting and gas desulfurization unit cooperation, both reduced investment, turn improves full factory heat utilization ratio.
Accompanying drawing explanation
Fig. 1 is the system schematic that gasoline, diesel oil and pitch are produced in the lighting of the utility model crude oil with poor quality.
Wherein, 1, stock oil storage tank, 2, electrical desalter, 3, interchanger, 4, process furnace, 5, atmospheric fractional tower, 6, solvent extraction apparatus, 7, mixing asphalt device, 8, reactor, 9, catalyst regenerator, 10, separation column, 11, gas desulphurisation plant, 12, crude oil with poor quality pretreatment unit, 13, heavy feed stock processing unit, 14, catalysis lighting unit, 15, gas sweetening unit.
Embodiment
Below in conjunction with accompanying drawing, method provided by the utility model is further described.
As shown in Figure 1, the system of gasoline, diesel oil and pitch is produced in a kind of crude oil with poor quality lighting, and this system comprises crude oil with poor quality pretreatment unit 12, gas sweetening unit 15, heavy feed stock processing unit 13 and catalysis lighting unit 14;
Crude oil with poor quality pretreatment unit comprises stock oil storage tank 1, electrical desalter 2, interchanger 3, process furnace 4 and atmospheric fractional tower 5; Multiple outlets of the atmospheric fractional tower 5 of crude oil with poor quality pretreatment unit connect gas sweetening unit, catalysis lighting unit and heavy feed stock processing unit respectively by pipeline; The entrance of atmospheric fractional tower 5 connects process furnace 4.
Heavy feed stock processing unit comprises solvent extraction apparatus 6 and mixing asphalt device 7.
Catalysis lighting unit comprises reactor 8, catalyst regenerator 9 and separation column 10; Multiple outlets of the atmospheric fractional tower 5 of crude oil with poor quality pretreatment unit connect the gas desulphurisation plant 11 of gas sweetening unit, the catalyticreactor 8 of catalysis lighting unit, the solvent extraction apparatus 6 of heavy feed stock processing unit respectively by pipeline.
The outlet of the solvent extraction apparatus 6 in heavy feed stock processing unit is connected by the entrance of pipeline with the reactor 8 of catalysis lighting unit, the entrance of solvent extraction apparatus 6 is connected with the outlet of the separation column 10 of catalysis lighting unit, and the mixing asphalt device 7 in heavy feed stock processing unit is connected with the outlet of the separation column 10 of catalysis lighting unit.
The separation column 10 of catalysis lighting unit is connected with the gas desulphurisation plant 11 of gas desulfurization unit by pipeline, and the entrance of the separation column 10 of catalysis lighting unit connects the outlet of catalyticreactor 8.
Steam heating coil is established in described stock oil storage tank 1.
Above-mentioned crude oil with poor quality produces the method for gasoline, diesel oil and pitch, specifically comprises the steps:
Store from the first incoming stock oil tank of the crude oil with poor quality outside device, deliver to electrical desalter afterwards, carry out washing, desalination, enter interchanger after dehydration and de-solid, with enter process furnace after processed oil heat exchange and heat, enter atmospheric fractional tower afterwards, atmospheric fractional tower isolates gas, gasoline, diesel oil, 330 DEG C ~ 350 DEG C atmospheric gas oils and >350 DEG C of residual oil successively.Wherein gas enters gas sweetening unit, and gasoline and diesel oil deliver to hydro-refining unit as outside product, and 330 DEG C ~ 350 DEG C atmospheric gas oils enter catalysis lighting unit, and >350 DEG C of residual oil enters heavy feed stock processing unit.
First 330 DEG C ~ 350 DEG C of residue oil fractions enter the reactor of catalysis lighting unit, carry out catalysis lighting reaction, used catalyzer enters the rear Returning reactor reuse of catalyst regenerator regeneration, reaction product enters separation column, isolates dry gas, liquefied gas, gasoline, diesel oil and catalytic slurry successively.Wherein dry gas enters gas sweetening unit, and liquefied gas, gasoline and diesel oil go out device as product; Catalytic slurry enters heavy feed stock processing unit, and catalytic slurry is divided into two portions, and a part enters solvent extraction apparatus as the raw material of heavy feed stock processing unit, and a part enters pitch attemperation apparatus as pitch mediation raw material.
>350 DEG C of residual oil and a part of catalytic slurry enter the solvent extraction apparatus of heavy feed stock processing unit, obtain catalysis lighting raw material and de-oiled asphalt after removing colloid, bituminous matter.The catalysis lighting raw material obtained enters the reactor of catalysis lighting unit, and the de-oiled asphalt obtained enters pitch attemperation apparatus, finally obtains asphaltic products..
The gas that atmospheric fractional tower obtains and the dry gas that separation column obtains enter gas sweetening unit, obtain fuel gas and sell as the fuel of process furnace or as product after removing H2S.
Below by specific embodiment, the method that the utility model provides is described further, but does not therefore limit the utility model.Embodiment raw material used is crude oil with poor quality, and its character is as shown in table 1, and operational condition is as shown in table 2.
Embodiment adopts the lighting processing method of crude oil with poor quality pre-treatment, heavy feed stock process, catalysis lighting and process of desulfurizing gases organic assembling.Crude oil with poor quality enters atmospheric fractional tower after electric desalting, heat exchange, process furnace heating, isolates gas, gasoline, diesel oil, 330 ~ 350 DEG C of atmospheric gas oils and >350 DEG C of residual oil successively.Gas enters gas sweetening unit, and gasoline and diesel oil deliver to hydro-refining unit as outside product, and 330 ~ 350 DEG C of atmospheric gas oils remove catalysis lighting unit, >350 DEG C of residual oil duplicate removal raw material processing unit.
330 ~ 350 DEG C of atmospheric gas oils enter reactor, and reaction product enters separation column, isolate dry gas, liquefied gas, gasoline, diesel oil and catalytic slurry successively.Dry gas degass body desulfurization unit, and liquefied gas, gasoline and diesel oil go out device as product, catalytic slurry duplicate removal raw material processing unit, and a part enters solvent extraction apparatus, and a part is used as pitch and is in harmonious proportion raw material and enters pitch attemperation apparatus.
>350 DEG C of residual oil enters solvent extraction apparatus, and isolated catalysis lighting raw material removes catalysis lighting unit, isolates de-oiled asphalt and enters pitch attemperation apparatus, after being in harmonious proportion, obtains high-grade heavy traffic paving asphalt with catalytic slurry.
The gas that crude oil with poor quality pretreatment unit and catalysis lighting unit produce degass body desulfurization unit, goes process furnace to sell as the fuel of process furnace or as product after removing H2S.
As can be seen from table 3,4, the light constituents such as the gasoline that this technique obtains and diesel oil are many, and the asphalt quality obtained is good, is transformed to greatest extent by crude oil with poor quality in order to light-end products and high-grade heavy traffic paving asphalt.
Table 1 crude oil with poor quality character
| ? | Crude oil with poor quality 1 | Crude oil with poor quality 2 |
| Density 20 DEG C, g/cm 3 | 0.9334 | 0.9385 |
| C content, m% | 87.11 | 87.07 |
| H content, m% | 12.3 | 11.83 |
| S content, m% | 2.1 | 2.3 |
| N content, m% | 0.3 | 0.25 |
| Carbon residue, m% | 6.2 | 7.4 |
| Metal (Ni+V), μ g/g | 30.4 | 27.6 |
| Colloid, m% | 16.0 | 15.6 |
| Bituminous matter, m% | 0.1 | 0.4 |
| Acid number, mgKOH/g | 2.8 | 3.7 |
| K value | 11.9 | 11.5 |
| Boiling range | ? | ? |
| 15～200℃ | 7.51 | 6.31 |
| 200～350℃ | 24.55 | 21.88 |
| 350～500℃ | 32.44 | 32.70 |
| >500℃ | 35.5 | 39.11 |
Table 2 operational condition
| ? | Embodiment 1 | Embodiment 2 |
| (1) crude oil with poor quality pretreatment unit | ? | ? |
| Stock oil storage tank heat temperature, DEG C | 100 | 90 |
| With temperature after processed oil heat exchange, DEG C | 230 | 220 |
| With pressure after processed oil heat exchange, MPa | 1.65 | 1.6 |
| Furnace outlet temperature, DEG C | 390 | 380 |
| (2) heavy feed stock processing unit | ? | ? |
| Extraction temperature, DEG C | 125 | 130 |
| Extraction pressure, MPa | 3.2 | 3.4 |
| Solvent ratio | 6:1 | 6:1 |
| (3) catalysis lighting unit | ? | ? |
| Temperature of reaction, DEG C | 500 | 505 |
| Regeneration temperature, DEG C | 720 | 720 |
| Reaction times, s | 1.5 | 1.5 |
| Agent-oil ratio | 8 | 8 |
| Reaction pressure, MPa | 0.28 | 0.28 |
Table 3 product slates
| ? | Embodiment 1, % | Embodiment 2, % |
| Gas | 6.72 | 4.14 |
| Liquefied gas | 6.94 | 9.84 |
| Gasoline | 33.70 | 32.40 |
| Diesel oil | 36.85 | 38.32 |
| Pitch | 15.78 | 15.28 |
| Loss | 0.01 | 0.02 |
Table 4 asphaltic nature
| ? | Embodiment 1 | Embodiment 2 |
| Penetration degree (25 DEG C), 0.1mm | 87 | 83 |
| Ductility (15 DEG C), cm | >150 | >150 |
| Softening temperature, DEG C | 50 | 46 |
Claims (7)
1. a system for gasoline, diesel oil and pitch is produced in crude oil with poor quality lighting, it is characterized in that this system comprises crude oil with poor quality pretreatment unit, gas sweetening unit, heavy feed stock processing unit and catalysis lighting unit;
Crude oil with poor quality pretreatment unit is connected with heavy feed stock processing unit, catalysis lighting unit and gas sweetening unit respectively by pipeline;
Heavy feed stock processing unit is connected with catalysis lighting unit by pipeline;
Catalysis lighting unit is connected with gas sweetening unit by pipeline.
2. system according to claim 1, is characterized in that, crude oil with poor quality pretreatment unit comprises stock oil storage tank (1), electrical desalter (2), interchanger (3), process furnace (4) and atmospheric fractional tower (5); Multiple outlets of the atmospheric fractional tower (5) of crude oil with poor quality pretreatment unit connect gas sweetening unit, catalysis lighting unit and heavy feed stock processing unit respectively by pipeline; The entrance of atmospheric fractional tower (5) connects process furnace (4).
3. system according to claim 1, is characterized in that, heavy feed stock processing unit comprises solvent extraction apparatus (6) and mixing asphalt device (7).
4. system according to claim 1, is characterized in that, catalysis lighting unit comprises reactor (8), catalyst regenerator (9) and separation column (10); Multiple outlets of the atmospheric fractional tower (5) of crude oil with poor quality pretreatment unit connect the gas desulphurisation plant (11) of gas sweetening unit respectively by pipeline, the catalyticreactor (8) of catalysis lighting unit, the solvent extraction apparatus (6) of heavy feed stock processing unit.
5. system according to claim 1, it is characterized in that, the outlet of the solvent extraction apparatus (6) in heavy feed stock processing unit is connected by the entrance of pipeline with the reactor (8) of catalysis lighting unit, the entrance of solvent extraction apparatus (6) is connected with the outlet of the separation column (10) of catalysis lighting unit, and the mixing asphalt device (7) in heavy feed stock processing unit is connected with the outlet of the separation column (10) of catalysis lighting unit.
6. system according to claim 1, it is characterized in that, the separation column (10) of catalysis lighting unit is connected with the gas desulphurisation plant (11) of gas desulfurization unit by pipeline, and the entrance of the separation column (10) of catalysis lighting unit connects the outlet of catalyticreactor (8).
7. system according to claim 2, is characterized in that establishing steam heating coil in described stock oil storage tank (1).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176579B (en) * | 2015-10-10 | 2016-09-28 | 中石化南京工程有限公司 | Decompression residuum/coal tar lighting and the method and the device thereof that produce heavy traffic paving asphalt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176579B (en) * | 2015-10-10 | 2016-09-28 | 中石化南京工程有限公司 | Decompression residuum/coal tar lighting and the method and the device thereof that produce heavy traffic paving asphalt |
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