EP0323297A1 - Wirbelschichtverfahren zur Kohlenwasserstoffumwandlung - Google Patents
Wirbelschichtverfahren zur Kohlenwasserstoffumwandlung Download PDFInfo
- Publication number
- EP0323297A1 EP0323297A1 EP88403153A EP88403153A EP0323297A1 EP 0323297 A1 EP0323297 A1 EP 0323297A1 EP 88403153 A EP88403153 A EP 88403153A EP 88403153 A EP88403153 A EP 88403153A EP 0323297 A1 EP0323297 A1 EP 0323297A1
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- European Patent Office
- Prior art keywords
- hydrocarbons
- temperature
- reaction zone
- catalyst
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 77
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 77
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000008569 process Effects 0.000 title claims abstract description 23
- 239000004215 Carbon black (E152) Substances 0.000 title abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 52
- 239000002245 particle Substances 0.000 claims abstract description 34
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 26
- 238000004230 steam cracking Methods 0.000 claims abstract description 24
- 238000004523 catalytic cracking Methods 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000003208 petroleum Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 22
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000000571 coke Substances 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 15
- 238000009835 boiling Methods 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 238000009834 vaporization Methods 0.000 claims description 10
- 230000008016 vaporization Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004821 distillation Methods 0.000 claims description 9
- 230000001174 ascending effect Effects 0.000 claims description 8
- 238000005194 fractionation Methods 0.000 claims description 8
- 229920006395 saturated elastomer Polymers 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- 238000006384 oligomerization reaction Methods 0.000 claims description 5
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000005292 vacuum distillation Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 description 13
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000004227 thermal cracking Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- 235000013844 butane Nutrition 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 asphaltenes Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 235000019577 caloric intake Nutrition 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- LGPMBEHDKBYMNU-UHFFFAOYSA-N ethane;ethene Chemical compound CC.C=C LGPMBEHDKBYMNU-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004231 fluid catalytic cracking Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005829 trimerization reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/14—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts
- C10G11/18—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised-bed" technique
Definitions
- the present invention relates to a conversion process and device allowing, in the same reaction zone, catalytic cracking from heavy hydrocarbon charges and the simultaneous production of olefins, in particular olefins comprising from 2 to 4 atoms of carbon, by gentle steam cracking of light hydrocarbon charges.
- hydrocarbon cracking processes are commonly used by the petroleum and oil services industries; they consist in dividing, by increasing the temperature, hydrocarbon molecules into smaller molecules.
- thermal cracking and catalytic cracking, which involve either the only influence of temperature or the active sites of a catalyst.
- thermocracking reaction which is a globally endothermic reaction, takes place mainly in the part of the tubes receiving the maximum heat flux.
- the temperature of these tubes is determined by the nature of the hydrocarbons to be cracked (they are generally either ethane or liquefied petroleum gases or LPG, or gasolines, naphthas, or finally sometimes diesel). Whatever the nature of the load, this temperature is always very high and greater than 700 ° C; it is however limited to a maximum of the order of 850 ° C. by the conditions of implementation of the method and by the complexity of operation of the ovens which use auxiliary heating energy.
- a catalytic cracking unit in a conventional fluidized bed in English Fluid Catalytic Cracking, or FCC process
- the hydrocarbon charge generally composed of gas oils or heavier charges such as distillation
- a cracking catalyst which is kept in suspension in the vapors of the feed.
- the catalyst is separated from the products obtained, stripped, regenerated by combustion of the coke formed, then brought back into contact with the charge to crack.
- This catalytic cracking reaction takes place in a temperature range generally between 450 and 550 ° C. It is implemented so that the cracking unit is in thermal equilibrium without using energy annexed to the heating.
- the supply of hot catalyst regenerated by combustion of the coke deposited during the reaction must be such that it can meet the various thermal requirements of the reaction section, namely, in particular: - preheating of the liquid charge, - the vaporization of this charge, - the calorie intake required by the reactions involved, which are generally endothermic.
- the present invention relates to a method and a device for carrying out, in the same reaction zone, in dilute fluidized phase, of essentially ascending or descending type, on the one hand, a thermal cracking reaction with water vapor of light hydrocarbon feedstocks, which may include saturated light gases or cuts ranging from gasolines to diesel fuels, and, on the other hand, a catalytic cracking reaction of heavy hydrocarbon feedstocks, including a substantial part of the range d boiling is above 500 ° C.
- the present invention aims to use this feature of heavy loads to produce coke, not only to provide the catalyst, during the combustion of coke, the energy necessary for the vaporization of the heavy load, but also to provide energy to the catalyst. additional and thus create, in the upstream part of the reaction zone, the conditions required for carrying out a gentle steam cracking of lighter hydrocarbons, comprising in particular ethane, propane, butane, light gasolines, naphthas and gas oils .
- the present invention therefore relates to a process for converting petroleum hydrocarbons, in the presence of catalyst particles in the fluidized phase, in a tubular reaction zone with essentially ascending or descending flow, this process comprising at least one step of steam cracking of at least one cut of light hydrocarbons, in the upstream part of the reaction zone, and a catalytic cracking step of at least one cut of heavy hydrocarbons, in the downstream part of said reaction zone, a step of ballistic separation of the spent catalyst particles, a step of regenerating this catalyst in at least one zone for burning the coke deposited on these particles and a step of recycling the regenerated particles to the supply of the reaction zone, this process being characterized in what: the steam cracking is carried out by bringing into contact, in a fluidized bed, the particles of catalyst, said light hydrocarbons and an amount of water vapor equal to at least 20% by weight and preferably between 30 and 50% by weight of the quantity of light hydrocarbons, the temperature resulting from said contacting being between 650 and 850 ° C and
- Light hydrocarbons intended for steam cracking may be introduced into the reaction zone using one or more injection lines, depending on the nature of the hydrocarbons to be steam cracked.
- the various cuts of hydrocarbons capable of being injected will be introduced one after the other from upstream to downstream in said reaction zone by Ascending of their boiling temperature, the lightest cup being introduced into the hottest area.
- the steam cracking zone may be subdivided into as many zones, operating with decreasing severity, as there are sections of light saturated hydrocarbons intended for steam cracking.
- the quantity of water vapor injected into the upstream part of the reaction zone is here significant compared to the usual cracking conditions in a fluidized bed. However, it remains appreciably lower than the values practiced in the conventional steam cracking process, in particular because the process described here accommodates without problem the possible formation of a certain amount of coke. Indeed, the amount of water vapor will usually be between 20 and 60% and, preferably, between 30 and 50% by weight, relative to the amount of hydrocarbons to be converted by steam cracking.
- a first advantage of the process according to the invention is linked to the fact that the steam cracking reaction, in the upstream part of the reactor, requires significant amounts of calories due, essentially, to the very high endothermicity of this reaction (5 to 10 times higher than that of the catalytic cracking reaction).
- This significant absorption of calories, in the upstream part of the reactor acts as a heat sink, which is reflected, as in any catalytic cracking unit, by an increased flow rate of the catalyst circulation.
- the catalytic cracking reaction will be carried out with a ratio of quantity of catalyst to quantity of filler to be cracked (generally called "C / O ratio") much higher than according to the prior art (see for this purpose the European patent No. 208.609), with the consequence of a significant improvement in the yield of petrol and diesel compared to the quantity of heavy load to be cracked.
- this C / O ratio may advantageously be between 4 and 12 in the downstream part of the reaction zone.
- a second advantage of the process according to the invention resides in the fact that it makes it possible to convert into ethylene, propylene and butenes, light cuts of low recovery, such as ethane or certain gasoline cuts, and this under selectivity conditions superior to conventional steam cracking.
- the cracking unit will comprise a device for fractionating the reaction effluents making it possible to selectively fractionate, in a manner known per se, the abovementioned hydrocarbons as well as light gases and hydrocarbons with two, three or four carbon atoms.
- the gentle steam cracking will be carried out in the upstream part of the reactor in at least two zones of decreasing severity, by injection in the presence of water vapor of at least two separate cuts: a cut containing mainly ethane, but also possibly propane and butane, then a cut containing light essences, then possibly naphtas or gas oils.
- the production of propylene can also be significantly increased by judicious reuse of the hydrocarbons with two carbon atoms produced during the reaction.
- the mixture of ethylene ethane coming from the fractionation zone of a type known per se, and to send this mixture to a trimerization or oligomerization reactor of the ethylene, for example of the type described by the prior art (for this purpose refer to European patents 12 685, 24 971, 215 609 or to American patent 4 605 807), to recover, after fractionation of the effluents: -
- the unreacted ethane which will be recycled at the inlet of the upstream part of the reaction zone, in accordance with the present invention.
- An additional advantage arising from the present invention resides in the fact that the hydrogen necessarily produced by steam cracking in the upstream part of the reactor is capable of reacting under the reaction conditions of the downstream part of the reactor and, therefore, of improving the yield effluents from the conversion unit into the best valued products.
- the steam cracked hydrocarbon fractions usable according to the present invention therefore comprise saturated light gases, such as ethane, propane or butanes, or heavier hydrocarbons, saturated or not, such as light gasolines, naphthas or gas oils, or even certain cuts with a higher boiling point but highly paraffinic, such as paraffins or slack wax.
- saturated light gases such as ethane, propane or butanes
- heavier hydrocarbons saturated or not, such as light gasolines, naphthas or gas oils, or even certain cuts with a higher boiling point but highly paraffinic, such as paraffins or slack wax.
- These hydrocarbon fractions can come either from different refinery units, such as atmospheric distillation, visbreaking, hydrocracking, oil manufacturing or olefin oligomerization units, or effluents from the unit of conversion itself.
- the main charge injected downstream of the mild steam cracking zone could be a standard charge of a catalytic cracking unit, but with the possibility, compared to the known precedents, of also using heavier charges.
- These fillers may, if necessary, have received a preliminary treatment, such as, for example, a hydrotreatment. They may, in particular, contain fractions rich in asphaltenes and having a Conradson carbon content. equal to or greater than 10%.
- These charges can be diluted or not by conventional lighter cuts, can include cuts of hydrocarbons having already undergone a cracking operation and which are recycled, such as cracked gas oils, LCOs or HCOs Finally, these charges can be preheated in a temperature range generally between 100 and 400 ° C.
- the injection of hydrocarbons into the downstream part of the reaction zone is carried out using high-performance sprayers, such as nozzle sprayers of the venturi type, so as to give the droplets of liquid the smallest possible diameter. , generally less than 100 microns and preferably less than 50 microns.
- This fine spray allows the droplets formed to be vaporized almost instantaneously, when they are brought into contact with the catalyst flow at high temperature.
- the temperature for mixing the charge with the catalyst particles may be as high as necessary to obtain complete vaporization of all the constituents of the charge, while remaining independent of the final catalytic cracking temperature of the zone located further downstream, thanks to the injection, downstream of the residual main charge, of another cut of hydrocarbons, such as a cut HCO or LCO liquid, the latter cut being injected at a temperature and in an amount such that the temperature prevailing in the rest of the reaction zone can be adjusted, so that the catalytic cracking is carried out under optimal conditions.
- another cut of hydrocarbons such as a cut HCO or LCO liquid
- the device will include means for regulating the feed rate of the recycle so that the final reaction temperature is maintained equal to a set value adapted to the load to be cracked, to the cracking conditions and to the type of market sought (for example, petrol market: final temperature 500-530 ° C, or diesel market: final temperature 480-510 ° C).
- a set value adapted to the load to be cracked, to the cracking conditions and to the type of market sought (for example, petrol market: final temperature 500-530 ° C, or diesel market: final temperature 480-510 ° C).
- the mixing temperature of the vaporized charge to be cracked and the catalyst can thus be maintained above the dew point of the charge, while adapting the cracking temperature to the selectivity desired for the cracking effluents.
- the present invention therefore also relates to a device for converting fluidized catalytic phases of petroleum fractions, this device comprising a reaction zone for bringing petroleum fractions at high temperature into contact with catalyst particles in a tubular type reactor with essentially flow ascending or descending, means for ballistic separation of said particles and cracked cuts, means for stripping the catalyst particles, means for regenerating them by combustion of the coke deposited on these particles, and means for recycling the particles cells regenerated at the supply to said reactor, said device being characterized in that it comprises means for injecting at least one section of light hydrocarbons such as saturated light gases, gasolines or gas oils in the upstream part of the tubular reactor in the presence of water vapor in an amount equal to at least 20% by weight and, preferably, comprised e between 30 and 50% by weight relative to the amount of hydrocarbons, so that the resulting mixture is kept at a temperature between 650 and 850 ° C in a diluted fluidized bed, and in that it comprises in the downstream part of the tubular reactor first means for spraying at least
- This temperature of the conversion effluents will in particular be kept constant between 475 and 550 ° C. by spraying, downstream of the injection zone of the heavy load, with a determined quantity of LCO or HCO.
- This spraying like that of the heavy load to be catalytically cracked, will be carried out using injectors of a type known per se, making it possible to obtain, at the outlet of the injector (s), droplets of which at least 80% have a diameter less than 100 microns.
- the ratio between the flow rate of heavy hydrocarbon feed introduced into the downstream part and the flow of lighter hydrocarbons (in particular ethane and petrol) introduced into the upstream part can vary in significant proportions, for example in a ratio of between 0.20 and 1.50 by weight.
- catalysts having catalytic cracking capacities can be used to carry out the process according to the present invention.
- a particularly advantageous category is that of catalysts having porous structures in which molecules can be brought into contact with active sites located in the pores; in this class, there are in particular silicates or aluminosilicates.
- catalysts containing zeolite are commercially available with supports containing a variety of metal oxides and combinations of said oxides, in particular silica, alumina, magnesia, oxides of titanium, barium, and mixtures of these substances, as well as mixtures of said oxides with clays, bridged or not.
- the catalyst composition can naturally contain one or more agents promoting one or the other step of the process.
- the catalyst may therefore, in particular, contain agents promoting the combustion of coke during regeneration.
- the upward fluidized phase conversion device shown in this figure essentially comprises a column 1, called a load elevator, or riser. It is supplied at its base by line 2 with particles of regenerated catalyst particles, in a quantity regulated by a valve 3. The regenerated particles are fluidized by injection of steam or gas arriving by line 4 at the base of the riser , using a diffuser 5.
- Light saturated gases comprising in particular ethane are then introduced into the column using the diffuser 7 supplied by line 6 with additional steam supplied by line 10.
- a gasoline or diesel cut injected by a diffuser 8 supplied by the line 9, can in turn be cracked at a lower temperature level, of the order of 150 to 750 ° C.
- a complement of steam can also be supplied by line 10 ′.
- the load of hydrocarbons heavier than diesel is then introduced into the reactor using one or more injectors 11 supplied by line 12, in an amount such that the temperature prevailing in this part of column 1 is higher or equal to the vaporization temperature of said charge. It is then necessary to reduce the mixing temperature to a value more conducive to catalytic cracking, that is to say of the order of 475 to 550 ° C., by spraying with hydrocarbons such as light diluents (LCO) or heavy (HCO), using line 13 which supplies the injector (s) 14.
- LCO light diluents
- HCO heavy
- Column 1 opens at its top into an enclosure 15, which is for example concentric with it and in which, on the one hand, the separation of the cracked charge takes place and, on the other hand, the stripping of the used particles.
- the ballistic separation system cyclonic or not, is housed in the enclosure 15 and the effluent hydrocarbons are evacuated by an evacuation line 16, provided at the top of the enclosure 15, while the used catalytic particles descend to the base.
- enclosure 15 where a line 17 supplies stripping gas (generally steam) to diffusers 18 regularly arranged at the base of this enclosure 15.
- the particles thus stripped are evacuated towards the regenerator, via of a duct 19, on which a regulating valve 20 is provided.
- the regenerator shown in this figure here comprises a first combustion zone 21, in the presence of oxygen, of the coke deposited on the catalyst particles.
- the coke is thus mainly burnt using air, injected into the regenerator bar by a line 22, which feeds the diffuser 23.
- the combustion gas is separated from the catalyst grains in the cyclone 24, whence the combustion gas is evacuated via a line 25, while the partially regenerated catalytic particles are transferred to the second stage 26 by the central duct 27, supplied with air by the line 28.
- the base of the stage 26 can also be supplied with air by the diffuser 29, supplied by the line 30.
- the grains of this regenerated catalyst are discharged laterally in a buffer enclosure 31 and recycled through line 2 to the supply to the elevator 1.
- the combustion gases discharged at the upper part of the chamber 26 are treated in a cyclone 32, which is here external to the chamber and from the base of which the particles of the catalyst are returned via the conduit 33 into the chamber 26, while the combustion gases are evacuated via line 34.
- reaction effluents leaving the stripping zone via line 16 are sent to a fractionation device schematically represented at 35, making it possible to separate: - by line 36, light gases or dry gases, (composed in particular of hydrogen, methane, ethane, ethylene, C3 to C5 hydrocarbons of NH3 and H2S), which can be then treated in another fractionation device 37, making it possible, in a manner known per se, to separate ethane and ethyl via line 38 and the C3 to C5 hydrocarbons which exit through line 39; - via line 40, the gasoline section, the boiling range of which generally extends from section C5 to around 160-220 ° C; - by line 41, the diesel cut, often also called LCO, whose boiling range generally extends from 160-220 ° C (start of cut) until around 320-380 ° C (end of cut); - via line 42, the heavy thinner cut, often also called HCO, which is less well valued (low viscosity fuel base) and whose
- the ethane and the ethylene coming from line 38 are introduced into an oligomerization reactor 44.
- a fractionation device 45 then makes it possible to evacuate via line 46 unreacted ethane and ethylene, while light olefinic gasolines (whose boiling temperature is generally between 30 and 100 ° C) are extracted by line 47.
- Line 46 then allows to return the ethane thus recovered in the upstream part of the reactor by line 6, while the light gasolines can either be recovered as such, or steam cracked by recycling in line 9, in order, for example, to maximize the production of propylene.
- part of the HCO from the fractionation zone 35 is here recycled by line 42 to line 13 to regulate the reaction temperature downstream of column 1.
- This regulation is done using a valve 48, the flow rate of which is for example adjusted as a function of the temperature measured using a probe preferably located at the outlet of the reactor.
- valves 49 and 50 make it possible to regulate the quantities of light hydrocarbons introduced by lines 9 and 6 into the upstream part of the reaction zone, as a function of the temperature measured in this part, so that this temperature , between 650 and 850 ° C, allows to ensure steam cracking, in accordance with the present invention.
- a commercial catalyst comprising ultra-stabilized zeolites and a matrix capable of cracking the heaviest hydrocarbon molecules.
- the conditions of this test in which ethane and petrol are successively injected into the upstream part of the reaction zone, then successively the charge A and a determined quantity of HCO in the downstream part, are as follows: Upstream riser area: Ethane injection - Regenerated catalyst temperature (° C) : 800 - Flow rate of regenerated catalyst (t / h) : 720 - Steam flow at 320 ° C (t / h) : 40 - Ethane flow (t / h) : 5 - Mixing temperature (° C) : 785 Fuel injection - Steam flow at 320 ° C (t / h) : 1 - Fuel flow at 150 ° C (t / h) : 20 - Mixing temperature (° C) : 725
- Downstream riser area Charge injection - Steam flow at 320 ° C (t /
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8718375 | 1987-12-30 | ||
FR8718375A FR2625509B1 (fr) | 1987-12-30 | 1987-12-30 | Procede et dispositif de conversion d'hydrocarbures en lit fluidise |
CN89100052A CN1020344C (zh) | 1987-12-30 | 1988-12-30 | 流化床烃类转化方法和装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0323297A1 true EP0323297A1 (de) | 1989-07-05 |
EP0323297B1 EP0323297B1 (de) | 1991-06-19 |
Family
ID=36699186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88403153A Expired - Lifetime EP0323297B1 (de) | 1987-12-30 | 1988-12-12 | Wirbelschichtverfahren zur Kohlenwasserstoffumwandlung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0323297B1 (de) |
JP (1) | JP2509314B2 (de) |
CN (1) | CN1020344C (de) |
DE (1) | DE3863352D1 (de) |
ES (1) | ES2022682B3 (de) |
FR (1) | FR2625509B1 (de) |
GR (1) | GR3002175T3 (de) |
ZA (1) | ZA889689B (de) |
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WO1991003527A1 (fr) * | 1989-09-01 | 1991-03-21 | Compagnie De Raffinage Et De Distribution Total France | Procede et dispositif de vapocraquage d'hydrocarbures en phase fluidisee |
FR2655053A1 (fr) * | 1989-11-24 | 1991-05-31 | Inst Francais Du Petrole | Procede et dispositif de regulation des conditions de fonctionnement d'un reacteur de craquage catalytique utilisant une source de rayonnements ionisants. |
FR2658833A1 (fr) * | 1990-02-26 | 1991-08-30 | Inst Francais Du Petrole | Procede de craquage a l'etat fluide d'une charge d'hydrocarbures. |
FR2659346A1 (fr) * | 1990-03-09 | 1991-09-13 | Inst Francais Du Petrole | Procede de craquage avec oligomerisation ou trimerisation des olefines presentes dans les effluents. |
EP0849347A2 (de) * | 1996-12-17 | 1998-06-24 | Exxon Research And Engineering Company | Katalytische Krackverfahren für das wieder Kracken von katalytischem Naphta zur Erhöhung der Ausbeute von leichten Olefinen |
JP2786287B2 (ja) * | 1989-09-01 | 1998-08-13 | トータル、ラフィナージュ、ディストリビュシオン、ソシエテ、アノニム | 流動相で炭化水素を蒸気クラッキングする方法および装置 |
WO1999055801A1 (en) * | 1998-04-28 | 1999-11-04 | Exxon Research And Engineering Company | Fluid catalytic cracking process for converting a plurality of feeds |
EP1046696A2 (de) * | 1999-04-23 | 2000-10-25 | China Petrochemical Corporation | Verfahren zur katalytischen Umwandlung zum Herstellen von mit Isobutan und Isoparaffinen angereichertem Benzin |
US6447671B1 (en) | 1999-03-25 | 2002-09-10 | Institut Francais Du Petrole | Process for converting heavy petroleum fractions, comprising an ebullated bed hydroconversion step and a hydrotreatment step |
WO2006071771A1 (en) * | 2004-12-23 | 2006-07-06 | Abb Lummus Global Inc. | Processing of different feeds in a fluid catalytis cracking unit |
EP1970427A2 (de) | 2007-03-12 | 2008-09-17 | Ivanhoe Energy, Inc. | Verfahren und Systeme zur Herstellung von verringerten Rückständen und bodenlosen Produkten für schwere Kohlenwasserstoffeinsätze |
WO2013083883A1 (fr) | 2011-12-07 | 2013-06-13 | IFP Energies Nouvelles | Procede d'hydroconversion de charges petrolieres en lits fixes pour la production de fiouls a basse teneur en soufre |
WO2014096703A1 (fr) | 2012-12-20 | 2014-06-26 | IFP Energies Nouvelles | Procédé integré de traitement de charges petrolieres pour la production de fiouls a basse teneur en soufre |
WO2014096704A1 (fr) | 2012-12-20 | 2014-06-26 | IFP Energies Nouvelles | Procédé avec separation de traitement de charges petrolieres pour la production de fiouls a basse teneur en soufre |
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CN1056595C (zh) * | 1997-10-20 | 2000-09-20 | 中国石油化工总公司 | 多种进料烃类直接转化制烯烃方法 |
WO2001000750A1 (en) * | 1999-06-23 | 2001-01-04 | China Petrochemical Corporation | Catalytic converting process for producing prolifically diesel oil and liquefied gas |
US7029571B1 (en) * | 2000-02-16 | 2006-04-18 | Indian Oil Corporation Limited | Multi stage selective catalytic cracking process and a system for producing high yield of middle distillate products from heavy hydrocarbon feedstocks |
DE60101338T2 (de) * | 2000-07-12 | 2004-09-09 | Shell Internationale Research Maatschappij B.V. | Standrohreinlass zur verbesserung der zirkulation von partikelförmigen feststoffen für petrochemische oder andere verfahren |
KR100939503B1 (ko) | 2002-04-26 | 2010-01-29 | 차이나 페트로리움 앤드 케미컬 코포레이션 | 하향류 접촉분해 반응기 및 이의 용도 |
DE10260738A1 (de) * | 2002-12-23 | 2004-07-15 | Outokumpu Oyj | Verfahren und Anlage zur Förderung von feinkörnigen Feststoffen |
JP2006063290A (ja) * | 2004-08-30 | 2006-03-09 | Ebara Corp | 高分子炭化水素の利用システムおよび方法 |
FR2894849B1 (fr) * | 2005-12-20 | 2008-05-16 | Inst Francais Du Petrole | Nouveau reacteur a deux zones reactionnelles fluidisees avec systeme de separation gaz/solide integre |
FR2895413B1 (fr) | 2005-12-27 | 2011-07-29 | Alstom Technology Ltd | Installation de conversion d'hydrocarbures petroliers a installation de combustion integree comprenant une capture du dioxyde de carbone |
US8658023B2 (en) * | 2010-12-29 | 2014-02-25 | Equistar Chemicals, Lp | Process for cracking heavy hydrocarbon feed |
FR2981659B1 (fr) | 2011-10-20 | 2013-11-01 | Ifp Energies Now | Procede de conversion de charges petrolieres comprenant une etape d'hydroconversion en lit bouillonnant et une etape d'hydrotraitement en lit fixe pour la production de fiouls a basse teneur en soufre |
AU2012369895B2 (en) * | 2012-02-14 | 2015-11-12 | Reliance Industries Ltd. | A process for catalytic conversion of low value hydrocarbon streams to light olefins |
MY173254A (en) * | 2012-08-09 | 2020-01-09 | Linde Ag | Method for preparing olefins by thermal steam-cracking |
FR2999600B1 (fr) | 2012-12-18 | 2015-11-13 | IFP Energies Nouvelles | Procede de raffinage d'une charge hydrocarbonee lourde mettant en oeuvre un desasphaltage selectif |
US9896627B2 (en) * | 2015-10-14 | 2018-02-20 | Saudi Arabian Oil Company | Processes and systems for fluidized catalytic cracking |
EP3945066B1 (de) * | 2020-07-28 | 2024-10-30 | TotalEnergies OneTech | Verfahren zur durchführung einer dampfcrackreaktion in einem wirbelschichtreaktor |
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US4422925A (en) * | 1981-12-28 | 1983-12-27 | Texaco Inc. | Catalytic cracking |
US4432863A (en) * | 1981-07-20 | 1984-02-21 | Ashland Oil, Inc. | Steam reforming of carbo-metallic oils |
EP0171460A1 (de) * | 1984-06-13 | 1986-02-19 | Ashland Oil, Inc. | Verfahren zur katalytischen Spaltung von Residualölen mit Trockengas als Auftriebgas in einem Steigrohrreaktor |
EP0208609A1 (de) * | 1985-07-10 | 1987-01-14 | Total Raffinage Distribution S.A. | Verfahren und Einrichtung für das katalytische Kracken von Kohlenwasserstoffen mit Kontrolle der Reaktionstemperatur |
-
1987
- 1987-12-30 FR FR8718375A patent/FR2625509B1/fr not_active Expired - Lifetime
-
1988
- 1988-12-12 EP EP88403153A patent/EP0323297B1/de not_active Expired - Lifetime
- 1988-12-12 ES ES88403153T patent/ES2022682B3/es not_active Expired - Lifetime
- 1988-12-12 DE DE8888403153T patent/DE3863352D1/de not_active Expired - Lifetime
- 1988-12-28 JP JP63335711A patent/JP2509314B2/ja not_active Expired - Lifetime
- 1988-12-28 ZA ZA889689A patent/ZA889689B/xx unknown
- 1988-12-30 CN CN89100052A patent/CN1020344C/zh not_active Expired - Fee Related
-
1991
- 1991-06-24 GR GR91400858T patent/GR3002175T3/el unknown
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Publication number | Priority date | Publication date | Assignee | Title |
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US4432863A (en) * | 1981-07-20 | 1984-02-21 | Ashland Oil, Inc. | Steam reforming of carbo-metallic oils |
US4422925A (en) * | 1981-12-28 | 1983-12-27 | Texaco Inc. | Catalytic cracking |
EP0171460A1 (de) * | 1984-06-13 | 1986-02-19 | Ashland Oil, Inc. | Verfahren zur katalytischen Spaltung von Residualölen mit Trockengas als Auftriebgas in einem Steigrohrreaktor |
EP0208609A1 (de) * | 1985-07-10 | 1987-01-14 | Total Raffinage Distribution S.A. | Verfahren und Einrichtung für das katalytische Kracken von Kohlenwasserstoffen mit Kontrolle der Reaktionstemperatur |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2786287B2 (ja) * | 1989-09-01 | 1998-08-13 | トータル、ラフィナージュ、ディストリビュシオン、ソシエテ、アノニム | 流動相で炭化水素を蒸気クラッキングする方法および装置 |
WO1991003527A1 (fr) * | 1989-09-01 | 1991-03-21 | Compagnie De Raffinage Et De Distribution Total France | Procede et dispositif de vapocraquage d'hydrocarbures en phase fluidisee |
AU641367B2 (en) * | 1989-09-01 | 1993-09-23 | Total Raffinage Distribution S.A. | Method and device for vapor-cracking of hydrocarbons in fluidized phase |
FR2655053A1 (fr) * | 1989-11-24 | 1991-05-31 | Inst Francais Du Petrole | Procede et dispositif de regulation des conditions de fonctionnement d'un reacteur de craquage catalytique utilisant une source de rayonnements ionisants. |
FR2658833A1 (fr) * | 1990-02-26 | 1991-08-30 | Inst Francais Du Petrole | Procede de craquage a l'etat fluide d'une charge d'hydrocarbures. |
FR2659346A1 (fr) * | 1990-03-09 | 1991-09-13 | Inst Francais Du Petrole | Procede de craquage avec oligomerisation ou trimerisation des olefines presentes dans les effluents. |
DE4107043B4 (de) * | 1990-03-09 | 2005-10-20 | Inst Francais Du Petrole | Verfahren für das thermische oder katalytische Kracken eines Kohlenwasserstoff-Einsatzprodukts |
EP0849347A2 (de) * | 1996-12-17 | 1998-06-24 | Exxon Research And Engineering Company | Katalytische Krackverfahren für das wieder Kracken von katalytischem Naphta zur Erhöhung der Ausbeute von leichten Olefinen |
EP0849347A3 (de) * | 1996-12-17 | 1998-12-09 | Exxon Research And Engineering Company | Katalytische Krackverfahren für das wieder Kracken von katalytischem Naphta zur Erhöhung der Ausbeute von leichten Olefinen |
WO1999055801A1 (en) * | 1998-04-28 | 1999-11-04 | Exxon Research And Engineering Company | Fluid catalytic cracking process for converting a plurality of feeds |
US6447671B1 (en) | 1999-03-25 | 2002-09-10 | Institut Francais Du Petrole | Process for converting heavy petroleum fractions, comprising an ebullated bed hydroconversion step and a hydrotreatment step |
EP1046696A2 (de) * | 1999-04-23 | 2000-10-25 | China Petrochemical Corporation | Verfahren zur katalytischen Umwandlung zum Herstellen von mit Isobutan und Isoparaffinen angereichertem Benzin |
EP1046696A3 (de) * | 1999-04-23 | 2001-01-03 | China Petrochemical Corporation | Verfahren zur katalytischen Umwandlung zum Herstellen von mit Isobutan und Isoparaffinen angereichertem Benzin |
JP2008525597A (ja) * | 2004-12-23 | 2008-07-17 | エービービー ルマス グローバル インコーポレイテッド | 流動接触分解ユニットにおける異質流体の処理 |
WO2006071771A1 (en) * | 2004-12-23 | 2006-07-06 | Abb Lummus Global Inc. | Processing of different feeds in a fluid catalytis cracking unit |
US8986617B2 (en) | 2004-12-23 | 2015-03-24 | Lummus Technology Inc. | Processing of different feeds in a fluid catalytic cracking unit |
US7682501B2 (en) | 2004-12-23 | 2010-03-23 | Abb Lummus Global, Inc. | Processing of different feeds in a fluid catalytic cracking unit |
AU2005322126B2 (en) * | 2004-12-23 | 2011-09-15 | Abb Lummus Global Inc. | Processing of different feeds in a fluid catalytis cracking unit |
CN101087865B (zh) * | 2004-12-23 | 2014-05-07 | Abb拉默斯环球有限公司 | 流化床催化裂化单元中不同进料的处理 |
KR101145196B1 (ko) * | 2004-12-23 | 2012-05-25 | 루머스 테크놀로지 인코포레이티드 | 유동성 촉매분해시설에서의 별개의 피드의 프로세싱 |
US8377287B2 (en) | 2007-03-12 | 2013-02-19 | Ivanhoe Energy, Inc. | Methods and systems for producing reduced resid and bottomless products from heavy hydrocarbon feedstocks |
EP1970427A3 (de) * | 2007-03-12 | 2012-05-09 | Ivanhoe Energy Inc. | Verfahren und Systeme zur Herstellung von verringerten Rückständen und bodenlosen Produkten für schwere Kohlenwasserstoffeinsätze |
US8808632B2 (en) | 2007-03-12 | 2014-08-19 | Ivanhoe Energy Inc. | Methods and systems for producing reduced resid and bottomless products from hydrocarbon feedstocks |
EP1970427A2 (de) | 2007-03-12 | 2008-09-17 | Ivanhoe Energy, Inc. | Verfahren und Systeme zur Herstellung von verringerten Rückständen und bodenlosen Produkten für schwere Kohlenwasserstoffeinsätze |
US9434888B2 (en) | 2007-03-12 | 2016-09-06 | Ivanhoe Htl Petroleum Ltd. | Methods and systems for producing reduced resid and bottomless products from heavy hydrocarbon feedstocks |
WO2013083883A1 (fr) | 2011-12-07 | 2013-06-13 | IFP Energies Nouvelles | Procede d'hydroconversion de charges petrolieres en lits fixes pour la production de fiouls a basse teneur en soufre |
WO2014096703A1 (fr) | 2012-12-20 | 2014-06-26 | IFP Energies Nouvelles | Procédé integré de traitement de charges petrolieres pour la production de fiouls a basse teneur en soufre |
WO2014096704A1 (fr) | 2012-12-20 | 2014-06-26 | IFP Energies Nouvelles | Procédé avec separation de traitement de charges petrolieres pour la production de fiouls a basse teneur en soufre |
Also Published As
Publication number | Publication date |
---|---|
DE3863352D1 (de) | 1991-07-25 |
CN1020344C (zh) | 1993-04-21 |
ES2022682B3 (es) | 1991-12-01 |
JPH01294794A (ja) | 1989-11-28 |
FR2625509B1 (fr) | 1990-06-22 |
EP0323297B1 (de) | 1991-06-19 |
GR3002175T3 (en) | 1992-12-30 |
JP2509314B2 (ja) | 1996-06-19 |
CN1034949A (zh) | 1989-08-23 |
ZA889689B (en) | 1989-09-27 |
FR2625509A1 (fr) | 1989-07-07 |
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