EP1508609A1 - Procédé de traitement d'une fraction intermédiaire issue d'effluents de vapocraquage - Google Patents
Procédé de traitement d'une fraction intermédiaire issue d'effluents de vapocraquage Download PDFInfo
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- EP1508609A1 EP1508609A1 EP04291954A EP04291954A EP1508609A1 EP 1508609 A1 EP1508609 A1 EP 1508609A1 EP 04291954 A EP04291954 A EP 04291954A EP 04291954 A EP04291954 A EP 04291954A EP 1508609 A1 EP1508609 A1 EP 1508609A1
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004230 steam cracking Methods 0.000 title claims description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000047 product Substances 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 239000003350 kerosene Substances 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 12
- 238000005194 fractionation Methods 0.000 claims abstract description 11
- 239000012467 final product Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims description 36
- 239000003502 gasoline Substances 0.000 claims description 32
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 29
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 26
- 238000004821 distillation Methods 0.000 claims description 24
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 23
- 238000000197 pyrolysis Methods 0.000 claims description 20
- 229910052717 sulfur Inorganic materials 0.000 claims description 20
- 239000011593 sulfur Substances 0.000 claims description 20
- 229910052763 palladium Inorganic materials 0.000 claims description 14
- 150000001336 alkenes Chemical class 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 8
- 239000000295 fuel oil Substances 0.000 claims description 7
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000004523 catalytic cracking Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 125000003118 aryl group Chemical group 0.000 description 8
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 8
- 238000004064 recycling Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 241000894007 species Species 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229910003294 NiMo Inorganic materials 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 235000021183 entrée Nutrition 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 229910003296 Ni-Mo Inorganic materials 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- DDTIGTPWGISMKL-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Mo] DDTIGTPWGISMKL-UHFFFAOYSA-N 0.000 description 1
- 150000005673 monoalkenes Chemical class 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
- C10G65/06—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps at least one step being a selective hydrogenation of the diolefins
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
- C10G65/08—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps at least one step being a hydrogenation of the aromatic hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/14—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural parallel stages only
- C10G65/16—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural parallel stages only including only refining steps
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G69/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process
- C10G69/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only
- C10G69/06—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of thermal cracking in the absence of hydrogen
Definitions
- the present invention relates to a method for treating effluents from steam cracking of hydrocarbons.
- the steam cracking process is a process well-known petrochemicals, at the base of the production of the major intermediaries, particularly ethylene and propylene. Steam cracking produces, in addition to ethylene and propylene, significant quantities of co-products less recoverable, including aromatic pyrolysis gasoline, which is noticeable amount when you love propane or butane, and more when you crack naphtha or diesel.
- the crude pyrolysis gasoline is often hydrotreated in two stages, with a intermediate fractionation to typically produce a C5 cut, a cut C6-C7-C8, and a C9 + cut.
- a Cn cut is a cut composed essentially of hydrocarbons with n carbon atoms
- a Cn + cut is a section composed essentially of hydrocarbons having at least n carbon atoms.
- Pyrolysis gasolines also typically have sulfur contents especially that of the C9 + cut, which is often of the order of 300 ppm weight. However, this sulfur content becomes incompatible with the evolution of the standards the maximum sulfur content of gasoline which tends to fall below 50 ppm, or 30 ppm or even 10 ppm weight.
- the object of the invention is to find a technically simple solution to the problem above, by requiring a minimum or no modification of the existing units, and allowing a high valuation of products.
- the charge rate of the unit HD3 is limited, and / or the degree of saturation of aromatics in this unit, so that hydrogen consumption in HD3 is less than or equal to the amount of excess hydrogen produced by steam cracking, and that the hydrogen feeding HD3 (and preferably hydrogen feeding HD1, HD2 and HD3) is provided in full by this hydrogen surplus.
- the invention therefore makes it possible to move away from the conventional technical philosophy of preserving the aromatics of the pyrolysis gasoline, to use Excess hydrogen from the steam cracker to change the spectrum of co-products steam cracker, and produce one or more new products for recovery high, which are no longer gasoline, and which remove the technical problem related to the amount of sulfur contained in the pyrolysis gasoline.
- a solvent or a solvent base at the outlet of HD3. having not less than 60% by volume of naphthenes, not more than 5%, and preferably not more than 3% % of aromatics, and at most 10 ppm by weight of sulfur.
- a kerosene or a light diesel fuel or a kerosene base or diesel having less than 30%, or less than 20%, of aromatics, not more than 300 ppm weight of sulfur, and a distillation interval (ASTM) included inside of the range [120 ° C-310 ° C].
- a domestic fuel oil in aromatics generally less than 50% by volume, or 30% by volume or even at 20% volume, with a sulfur content typically less than 300 ppm by weight, ASTM distillation interval typically within the range [120 ° C-310 ° C].
- the unit HD3 uses at least one catalyst comprising platinum and palladium deposited on a support. It has been found that such catalysts, used in the refinery, but not in the steam cracking industry, effective and compatible with the specific compounds present in the species pyrolysis.
- the unit HD3 uses at least one catalyst comprising 0.1 to 0.30% by weight of platinum, and 0.2 to 1% and preferably 0.4 at 0.7% by weight of palladium, deposited on a fluorinated alumina, comprising from 1 to 5% by weight of fluorine.
- This catalyst makes it possible to operate at high speeds hourly space velocities (VVH), including between 1 and 6 on these charges pyrolysis species.
- VVH hourly space velocities
- hydrorefining catalysts in HD3 such as Ni-Mo, Co-Mo (for example type CoMo HR406, HR306C (marketed by Axens) with a guard bed of NiMo type catalyst LD145 (marketed by Axens).
- a catalyst at least partially saturating the olefins for example for example a CoMo hydrodesulfurization catalyst on alumina.
- Residual content of olefins products derived from HD3, according to the invention, in particular solvent, or kerosene, or gas oil, or heating oil, or the base of any of these products, may be reduced to less than 5% by weight, or preferably less than 1% by weight, or very preferred less than 0.5% by weight, or even substantially zero.
- the intermediate fraction produced in step a), and the charge of the HD3 unit are not limited to the essence of pyrolysis, and may have an ASTM endpoint between 230 and 310 ° C, and preferably between 250 and 280 ° C.
- the charge, also called intermediate fraction, according to the invention is fed by line 1 and treated in a hydrotreatment unit HD1 to realize in particular a preliminary dediénisation.
- the dedienized charge circulates through line 2 and is fractionated in a distillation column 3 into a fraction C5 flowing through line 4, typically recycled to steam cracking, and a C6 + section flowing through line 5.
- This C6 + cut is split in the column 6 in a C6-C8 fraction (C6-C7-C8), feeding via line 7 a second hydrotreatment unit HD2 which carries out a thorough desulfurization of the C6-C8 cut, and a deep conversion of olefins.
- the C6-C8 cut treated, evacuated via line 9 may have for example less than 1 ppm weight of sulfur and less than 50 ppm by weight of olefins.
- the C9 + cut coming out of the bottom of the column 6 by the line 8 then feeds a third hydrotreatment unit HD3 to produce a desulphurized section at low aromatic content evacuated by line 11.
- the cut produced is according to the invention typically is a kerosene or a diesel fuel (or a kerosene base or diesel), the aromatic content of which is less than 30% by volume, generally less than 20% by volume, either a solvent or a solvent base, Aromatic content is less than 5% volume.
- a solvent or solvent base
- This may optionally include substantial amounts of C6-C8 hydrocarbons also fed to the HD3 unit via the line 10.
- the cut produced at the output of HD3 can also be a fuel domestic fuel oil or base, of aromatic content typically less than 50% volume, generally less than 30% volume, or even less than 20% volume.
- the C9 + cut fed by line 8 is added with a recycled fraction of hydrotreated product, circulating in line 8f, and a stream of recycle gas rich in hydrogen, circulating in line 8c.
- This stream includes hydrogen booster powered by a line not shown.
- the overall current from the mixture then feeds the hydrotreating reactor R3.
- the effluent of R3 circulates in the line 8a or it is cooled by means not shown, and enters the balloon separator S3.
- the gas separated in S3 is mainly recycled by line 8c, a fraction being purged by the line 8d.
- the liquid product from S3 circulates in the line 8b, to be partially recycled by line 8e and partially evacuated by the line 11.
- Some of the recycled liquid in the line 8e is injected interbed in the reactor R3, as a quenching liquid.
- the unit HD3 comprises at least one catalyst enabling to achieve very efficiently, in a single unit the specifications in sulfur and sought after aromatics.
- the catalyst of the unit HD3 comprises in particular at least one bed of platinum / palladium catalyst on a support of the type fluorinated alumina.
- the support can be composed essentially of gamma-alumina and comprise from 1 to 10, preferably from 1 to 7, and very preferably from 3 to and 5% by weight of fluorine.
- the unit HD3 can therefore include such a catalyst on fluorinated alumina support arranged in one or more beds and optionally first bed, or guard bed with a conventional catalyst of Ni / Mo type acting in pretreatment.
- This platinum / palladium catalyst may preferably comprise between 0.10 and 0.30%, preferably between 0.15 and 0.30%, and very preferably between 0.20 and 0.30% by weight of platinum, as well as usually from 0.2 to 1.0%, and preferably between 0.4 and 0.7% by weight of palladium.
- the molar ratio of palladium to platinum can in particular be between 3 and 8, preferably between 3.5 and 6.
- the end point of the cut treated is modified, and increased compared to a conventional cut of pyrolysis gasoline, the end point is often between 205 and 220 ° C.
- the end point of the cut treated in this variant of the invention may be higher because the C9 + cut is then typically intended to be transformed into products other than gasoline. Indeed, some solvents, as well as fractions kerosene, diesel or fuel oil, may have final distillation points (ASTM distillation) above 220 ° C.
- the fraction treated can therefore be a long fraction going beyond gasoline, having a final distillation point greater than 220 ° C, for example between 230 and 310 ° C, especially between 240 and 280 ° C.
- This can be achieved by modifying the fractionation of steam cracking effluents in primary distillation, the cutting point between the petrol fraction and the fuel fraction of pyrolysis, to leave fractions boiling above about 220 ° C in the so-called "gasoline” fraction, which becomes an intermediate fraction "gasoline + middle distillate".
- Steam cracking effluents of naphtha are fractionated in a plant of treatment of these effluents, comprising a primary distillation, to produce including a pyrolysis gasoline cut, including the C5 cut and heavier hydrocarbons to an ASTM endpoint of 210 ° C.
- This pyrolysis gasoline charge is treated according to the process scheme described in Figure 1.
- the feed fed to the hydrotreating unit HD3 is the C9 + feed, without C6 / C8 cutting from HD2, line 10 not being used.
- Catalyst palladium on alumina catalyst, comprising 0.30% by weight of palladium.
- Hydrogen content (total reactor inlet gas): 90 Nm 3 of hydrogen / m 3 of feedstock.
- the unused gas is separated and sent as an add-on to the second unit HD2.
- Recycle rate of the load 2 (we recycle 2 volumes of hydrotreated product leaving of HD1 for a fresh charge volume fed to HD1, to limit the increase in temperature due to the exothermicity of the reaction).
- Recycling rate of the unit 5 (recycling of liquid effluent in mass ratio by relation to the charge). 90% of the recycling is mixed with the load, and 10% is injected in catalytic inter-beds in order to adjust the thermal profile. Recycling liquid is indeed required by the heat released during hydrogenation.
- Example 1 is repeated but with a long charge, end point ASTM 250 ° C. This is achieved by modifying the operating parameters of the effluent treatment of steam cracking, so that the fractionation leaves with the pyrolysis gasoline fractions a little heavier than gasoline.
- Recycle hydrogen content including make-up hydrogen (hydrogen-rich total gas: inlet + quench): 400 Nm 3 / m 3 of charge of unit HD3.
- Recycling rate liquid effluent recycling with the load and between beds to adjust the thermal profile: 3 en masse, of which 0.45 in inter-beds.
- the invention may also use other hydrotreatment catalysts, and / or other operating conditions, or other undescribed characteristics but obvious to the skilled person.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
- Soit on produit une coupe C6-C8 utilisée comme base de production d'aromatiques, et l'on a évidemment intérêt à préserver au maximum ces aromatiques,
- Soit on produit une coupe C6-C8, ou C5+, ou C6+ utilisée comme base d'essence, et il faut également préserver au maximum les aromatiques pour maximiser l'indice d'octane de l'essence.
- un solvant (ou une base de solvant), d'intervalle de distillation ASTM typiquement compris à l'intérieur, environ, de l'intervalle [65°C-250°C], ou de l'intervalle [90°C-240°C] ou de l'intervalle [130°C-230°C], de taux d'aromatiques très bas, généralement inférieur à 5% volume, ou à 3% volume ou même à 1% volume, de teneur en soufre typiquement inférieure à 10 ppm poids, voire à 5 ppm ou même à 1 ppm.
- un kérosène ou un gazole (ou une base de kérosène ou de gazole), d'intervalle de distillation ASTM typiquement compris à l'intérieur de l'intervalle [120°C-310°C], ou de l'intervalle [130°C-280°C], ou de l'intervalle [140°C-250°C], de taux d'aromatiques très bas, généralement inférieur à 30% volume, ou même à 20% volume, de teneur en soufre typiquement inférieure à 300 ppm poids, notamment inférieure à 50 ppm poids, voire inférieure à 10 ppm poids,
- un fuel domestique (ou une base de fuel domestique), d'intervalle de distillation ASTM typiquement compris à l'intérieur de l'intervalle [120°C-310°C], ou de l'intervalle [130°C-280°C], ou de l'intervalle [140°C-250°C], de taux d'aromatiques généralement inférieur à 50% volume, ou à 30% volume ou même à 20% volume, de teneur en soufre typiquement inférieure à 300 ppm poids, notamment inférieure à 50 ppm poids.
Claims (10)
- Procédé de traitement d'effluents de vapocraquage d'hydrocarbures, comprenant:et produire en sortie de HD3 au moins un produit final du groupe constitué par les solvants comprenant moins de 5% d'aromatiques, les coupes kérosène, ou gazole, ou fuel domestique, ou les bases pour la fabrication de ces produits.a) la séparation de ces effluents pour produire une fraction intermédiaire comprenant la plus grande partie au moins de l'essence de pyrolyse comprise dans ces effluents, et composée pour sa plus grande partie de composés ayant au moins 5 atomes de carbone et un point d'ébullition final inférieur à 310 °C,b) un premier hydrotraitement de cette fraction intermédiaire dans une unité HD1,c) un fractionnement d'une partie au moins de l'effluent de l'unité HD1, pour produire une coupe C5 et une coupe C6+,d) un fractionnement d'une partie au moins de la coupe C6+, pour produire une coupe C6-C8 et une coupe C9+,e) un deuxième hydrotraitement d'une partie au moins de la coupe C6-C8 dans une unité HD2, pour produire une coupe C6-C8 hydrotraitée,f) un troisième hydrotraitement d'une charge comprenant une partie au moins de la coupe C9+, et optionnellement une partie au moins de la coupe C6-C8 ou de la coupe C6-C8 hydrotraitée, dans une unité HD3 pour saturer au moins 20% volume des aromatiques compris dans la charge de l'unité HD3 avec, en partie ou en totalité, de l'hydrogène excédentaire produit par ledit vapocraquage,
- Procédé selon la revendication 1 dans lequel on limite le débit de charge de l'unité HD3, et/ou le degré de saturation des aromatiques dans cette unité, pour que la consommation d'hydrogène dans HD3 soit inférieure ou égale à la quantité d'hydrogène excédentaire produit par le vapocraquage, et que l'hydrogène alimentant HD3 soit pourvu en totalité par cet hydrogène excédentaire.
- Procédé selon l'une des revendications 1 et 2, dans lequel on produit en sortie de HD3 un solvant ou une base de solvant ayant au moins 60% volume de naphtènes, au plus 5% volume d'aromatiques, et au plus 10 ppm poids de soufre.
- Procédé selon l'une des revendications 1 et 2, dans lequel on produit en sortie de HD3 un kérosène ou un gazole ou une base de kérosène ou de gazole ayant moins de 30% volume d'aromatiques, au plus 300 ppm poids de soufre, et un intervalle de distillation ASTM compris à l'intérieur de l'intervalle [120°C-310°C].
- Procédé selon l'une des revendications 1 et 2, dans lequel on produit en sortie de HD3 un fuel domestique ou une base de fuel domestique ayant moins de 50% volume d'aromatiques, au plus 300 ppm poids de soufre, et un intervalle de distillation ASTM compris à l'intérieur de l'intervalle [120°C-310°C].
- Procédé selon l'une des revendications 1 à 6, dans lequel l'unité HD3 utilise au moins un catalyseur comprenant du platine et du palladium déposés sur un support.
- Procédé selon la revendication 6, dans lequel L'unité HD3 utilise au moins un catalyseur comprenant de 0,10 à 0,30 % poids de platine et de 0,2 à 1 % poids de palladium déposés sur une alumine fluorée, comprenant de 1 à 5 % poids de fluor.
- Procédé selon l'une des revendications 1 à 6, dans lequel la fraction intermédiaire produite à l'étape a), et la charge de l'unité HD3 ont un point final ASTM compris entre 230 et 310°C.
- Procédé selon l'une des revendications précédentes, dans lequel ledit produit final a une teneur en oléfines inférieure à 1% poids.
- Produit final du groupe constitué par les solvants comprenant moins de 5% d'aromatiques, les coupes kérosène, ou gazole, ou fuel domestique, ou les bases pour la fabrication de ces produits, ce produit final ayant été obtenu par le procédé selon l'une des revendications 1 à 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0310028A FR2858981B1 (fr) | 2003-08-19 | 2003-08-19 | Procede de traitement d'une fraction intermediaire issue d'effluents de vapocraquage |
| FR0310028 | 2003-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1508609A1 true EP1508609A1 (fr) | 2005-02-23 |
| EP1508609B1 EP1508609B1 (fr) | 2008-10-22 |
Family
ID=34043784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20040291954 Expired - Lifetime EP1508609B1 (fr) | 2003-08-19 | 2004-07-29 | Procédé de traitement d'une fraction intermédiaire issue d'effluents de vapocraquage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1508609B1 (fr) |
| DE (1) | DE602004017261D1 (fr) |
| FR (1) | FR2858981B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948441B (zh) * | 2006-10-08 | 2010-05-12 | 广东省茂名华粤集团有限公司 | 石油烃裂解碳九馏分加氢工艺 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913692B1 (fr) | 2007-03-14 | 2010-10-15 | Inst Francais Du Petrole | Procede de desulfuration de fractions hydrocarbonees issues d'effluents de vapocraquage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1315477A (fr) * | 1961-02-20 | 1963-01-18 | Exxon Research Engineering Co | Procédé de conversion des hydrocarbures |
| US3271297A (en) * | 1960-12-15 | 1966-09-06 | Bayer Ag | Recycle of monoolefines to a hydrocarbon pyrolysis process |
| US4138325A (en) * | 1977-12-22 | 1979-02-06 | Gulf Research & Development Company | Process for conversion of gas oil to ethylene and needle coke |
| US4244808A (en) * | 1978-09-21 | 1981-01-13 | Linde Aktiengesellschaft | Method of processing a high-boiling fraction obtained in the cracking of hydrocarbons |
| US20030141220A1 (en) * | 2002-01-31 | 2003-07-31 | O'rear Dennis J. | Upgrading fischer-tropsch and petroleum-derived naphthas and distillates |
-
2003
- 2003-08-19 FR FR0310028A patent/FR2858981B1/fr not_active Expired - Fee Related
-
2004
- 2004-07-29 EP EP20040291954 patent/EP1508609B1/fr not_active Expired - Lifetime
- 2004-07-29 DE DE200460017261 patent/DE602004017261D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3271297A (en) * | 1960-12-15 | 1966-09-06 | Bayer Ag | Recycle of monoolefines to a hydrocarbon pyrolysis process |
| FR1315477A (fr) * | 1961-02-20 | 1963-01-18 | Exxon Research Engineering Co | Procédé de conversion des hydrocarbures |
| US4138325A (en) * | 1977-12-22 | 1979-02-06 | Gulf Research & Development Company | Process for conversion of gas oil to ethylene and needle coke |
| US4244808A (en) * | 1978-09-21 | 1981-01-13 | Linde Aktiengesellschaft | Method of processing a high-boiling fraction obtained in the cracking of hydrocarbons |
| US20030141220A1 (en) * | 2002-01-31 | 2003-07-31 | O'rear Dennis J. | Upgrading fischer-tropsch and petroleum-derived naphthas and distillates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948441B (zh) * | 2006-10-08 | 2010-05-12 | 广东省茂名华粤集团有限公司 | 石油烃裂解碳九馏分加氢工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2858981A1 (fr) | 2005-02-25 |
| EP1508609B1 (fr) | 2008-10-22 |
| DE602004017261D1 (de) | 2008-12-04 |
| FR2858981B1 (fr) | 2006-02-17 |
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