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WO2017021977A1 - Atomiseur de liquide multi-étages pour craquage catalytique fluidisé - Google Patents

Atomiseur de liquide multi-étages pour craquage catalytique fluidisé Download PDF

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Publication number
WO2017021977A1
WO2017021977A1 PCT/IN2016/050182 IN2016050182W WO2017021977A1 WO 2017021977 A1 WO2017021977 A1 WO 2017021977A1 IN 2016050182 W IN2016050182 W IN 2016050182W WO 2017021977 A1 WO2017021977 A1 WO 2017021977A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid feed
liquid
flow
conduit
nozzle assembly
Prior art date
Application number
PCT/IN2016/050182
Other languages
English (en)
Inventor
Madan Kumar K
Praveen Kumar Singh
Pramod Kumar
Venkata Chalapathi Rao PEDDY
Venkateswarlu Choudary Nettem
Sriganesh Gandham
Original Assignee
Hindustan Petroleum Corporation Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hindustan Petroleum Corporation Limited filed Critical Hindustan Petroleum Corporation Limited
Publication of WO2017021977A1 publication Critical patent/WO2017021977A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1818—Feeding of the fluidising gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1818—Feeding of the fluidising gas
    • B01J8/1827—Feeding of the fluidising gas the fluidising gas being a reactant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0458—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00796—Details of the reactor or of the particulate material
    • B01J2208/00893—Feeding means for the reactants
    • B01J2208/00902—Nozzle-type feeding elements

Definitions

  • the present subject matter relates, generally, to liquid spray nozzles, and more particularly, to a spray nozzle for atomizing and spraying a liquid feed to a fluidized catalytic cracking riser reactor.
  • fluidized catalytic cracking (FCC) process is used in petroleum refineries to convert high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefin gases, and other products.
  • FCC fluidized catalytic cracking
  • higher boiling fractions of crude oil is first atomized and then fed to a FCC riser reactor.
  • the atomization process generally involves interaction of pressurized liquid feed, such as higher boiling fractions of crude oil, and gas, such as steam, that breaks the liquid into very fine droplets.
  • the atomized droplets are discharged into the FCC riser reactor for the cracking reactions.
  • a high pressure atomization device is one of important hardware used for the FCC process.
  • a spray nozzle is used to carry out the high pressure atomization process.
  • the high pressure atomization process involves the pressurized liquid feed with high jet velocities to be discharged into low pressure gas/liquid atmosphere through orifices. Due to differential pressure, pressure energy is converted to kinetic energy leading to liquid atomization.
  • Figure 1 illustrates a schematic representation of a spray nozzle assembly in accordance with the present invention mounted within the wall of a riser of a catalytic cracking reactor.
  • Figure 2 illustrates a schematic representation of an enlarged longitudinal section of the spray nozzle assembly.
  • Figure 3 illustrates a schematic representation of an enlarged transverse section of the spray nozzle taken at an impingement plate of the spray nozzle.
  • the present subject matter relates to a spray nozzle assembly to be used in Fluidized Catalytic Cracking Process (FCC).
  • Conventional spray nozzles typically include a conduit which defines a mixing chamber.
  • Liquid feed for example, higher boiling fractions of crude oil
  • pressurized gas for example, steam
  • an impingement pin is used. The impingement pin extends into the mixing chamber and defines liquid impingement surface on a center line of the mixing chamber in diametrically opposed relation to a liquid inlet.
  • the liquid inlet is provided to allow a pressurized liquid stream to enter the mixing zone.
  • the pressurized liquid stream impinges against the impingement pin, and is transversely dispersed.
  • a pressurized gas stream from a gas inlet is directed. Interaction between the liquid stream and the gas stream causes shearing of the liquid into fine droplets. Force of the gas stream further causes the sheared liquid droplets within the mixing chamber to flow outwardly through an elongated tubular barrel.
  • the elongated tubular barrel is commonly disposed within a wall of the catalytic reactor riser, such that a spray tip nozzle at a downstream end of the elongated tubular barrel discharges the liquid in a predetermined pattern within the catalytic reactor riser.
  • the liquid may get discharged in a flat fan spray pattern.
  • a catalyst is mixed with the atomized liquid droplet to cause a FCC process.
  • the spray tip nozzle must spray the liquid as very fine liquid droplets.
  • the gas stream For effective break up of the liquid in very fine liquid droplets, the gas stream must be of a very high volume and high pressure, approximately around 110 psi, and further, even the liquid pressure must be kept at the same or greater pressure than the gas stream pressure to create differential pressure within the mixing zone.
  • Such spray nozzles are designed such that liquid flow, for example liquid hydrocarbon flow, must travel through the mixing chamber before impacting the impingement pin. Traveling distance is half of a diameter of the mixing chamber. For example, a spray nozzle with the mixing chamber of diameter of about four inches, liquid hydrocarbon flow has to travel the mixing chamber about two inches. In such nozzles with a large diameter of the mixing zone, the liquid hydrocarbon flow stream may tend to impact the impingement surface of the impingement pin partially. A reason behind the partial impact is that the liquid hydrocarbon flow has to travel significant distance through the mixing chamber, and it is subjected to heavy cross flow of the stream before impacting the impingement surface.
  • the heavy cross flow of the stream further causes a shift in the liquid flow stream away from a center of the impingement surface.
  • Magnitude of the shift depends upon the velocities of the pressurized stream and liquid flow streams for a particular spray nozzle.
  • the shift prevents the liquid hydrocarbon flow from fully impacting the impingement pin, and the magnitude of the shift determines the portion of the liquid hydrocarbon flow that will impact the impingement pin.
  • the partial impingement results in larger droplet size of the liquid hydrocarbon that adversely affects the spray performance.
  • pressure of the liquid flow may be increased. To increase the pressure, process pumps with larger and higher pressure handling capacity are required. Such pressure pumps, however, are expensive to operate.
  • the spray nozzle assembly includes two conduits, referred as an inner conduit and an outer conduit.
  • the inner conduit is a tubular member to provide a passageway to a pressurized liquid flow there through.
  • the inner conduit includes a liquid inlet to allow the pressurized liquid feed flow to enter into the inner conduit from a liquid feed supply.
  • the liquid inlet may be fixedly mounted on an upstream end of the inner conduit.
  • the liquid inlet may be an integral part of the inner conduit.
  • the inner conduit further includes an annulus which is an elongated tubular hollow section to provide a passageway for the liquid flow.
  • annulus which is an elongated tubular hollow section to provide a passageway for the liquid flow.
  • the annulus then directs the liquid feed flow in axial direction towards the downstream end.
  • another tubular hollow section is attached, referred as an accelerating zone.
  • the accelerating zone is a tubular zone which is extension of the annulus and extended towards the downstream end of the inner conduit.
  • the accelerating zone is of a smaller diameter than the annulus. Therefore, the accelerating zone increases velocity of the liquid flow coming out of the annulus.
  • a second set of orifices is disposed at a downstream end of the accelerating zone to allow discharger of a part of the accelerated liquid flow. In one example, a diameter of the second set of orifices is smaller than a diameter of the first set of orifices.
  • Remaining part of the accelerated liquid feed flow forms a streamline flow which gets discharged through a third set of orifices disposed at a closed downstream end of the inner conduit.
  • a diameter of the third set of orifices is smaller than the diameter of the second set of orifices.
  • the liquid feed flow while passing through the annulus and the accelerating zone, gains velocity and then gets discharged through a plurality of sets of discharge orifices. Increased velocity and discharger of the liquid flow through small orifices results in reduction in size of droplets of the liquid feed flow, achieving a first level of atomization thereby. Discharged droplets are discharged in a mixing zone of the outer conduit of the spray nozzle to achieve a second level of atomization.
  • the outer conduit is an elongated tubular member enclosing the inner conduit.
  • the outer conduit defines the mixing zone which is a hollow tubular section that provides a passageway where the droplets of the liquid feed flow discharged from the discharge orifices can interact with a pressurized gas stream.
  • a gas inlet is placed at an upstream end of the outer conduit to allow the pressurized gas stream to enter inside the mixing zone.
  • the gas inlet is fixedly mounted on an outer side of a wall of the spray nozzle.
  • the gas inlet is an integral part of the outer conduit formed at outer side of the wall of the outer conduit.
  • one or more jet tubes are placed within the mixing zone, particularly, between an outer side wall of the inner conduit and an inner side wall of the outer conduit to form a passage for the pressurized gas stream coming from the gas inlet in order to increase velocity of the gas stream.
  • discharged droplets from the plurality of sets of discharge orifices are dispersed in the mixing zone for sufficient residence time for proper mixing of the liquid feed and the gas stream and for further shearing of the droplets of the liquid feed.
  • the shearing of the droplets results in reduction in size of the droplets, and thus, achieving the second level of atomization of the liquid feed.
  • the atomized liquid flow is then directed to an impingement wall for further atomization.
  • the impingement wall is a ring placed perpendicular to the surface of the outer conduit.
  • the impingement wall includes slit type discharge orifices.
  • a plurality of discharge orifices is rectangular in shape having sharp inner edges to shear off the liquid droplets further prior to final atomization.
  • the impingement wall provides a third level of atomization.
  • the atomized liquid flow is directed towards a spray nozzle tip which is a downstream end of the spray nozzle.
  • a plurality of discharge orifices is disposed at the spray nozzle tip in predetermined manner. The plurality of orifices at the spray nozzle tip discharges the atomized liquid droplets, resulting in further atomization of the droplets.
  • a fourth level of atomization is achieved.
  • the fourth level of atomization enables discharger of the finest droplets of the liquid in a predetermined pattern.
  • the plurality of sets of discharge orifices where diameter of each set of the discharge orifices is predetermined, are disposed at respective specific location at a certain angle to increase velocity of the liquid feed flow in predetermined manner, and to discharge droplets of predetermined size, where the discharger results in reduction in size of the droplets.
  • the mixing results in reduction of viscosity of the mixed flow. Due to the reduced viscosity, the droplets of the liquid feed can be sheared effectively, in turn, achieving further reduction in the size of the droplets.
  • the impingement results in yet further reduction in size of the droplets.
  • the discharge orifices with sharp inner edges shears the droplets further, reducing the droplets significantly.
  • the discharge orifices at the spray nozzle tip shears the droplets to achieve final reduction in the size of the droplets.
  • FIG. 1 illustrates a schematic of a spray nozzle assembly 10 in accordance with the conventional mounting of the spray nozzle at an insulated wall 11 of a fluidized catalytic reactor.
  • the spray nozzle assembly 10 is of a tubular shape and fixed in a tubular sleeve 12.
  • the tubular sleeve 12 is vertically fixed within the insulated wall 11 at an acute angle to the insulated wall 11.
  • a vertical column is provided to discharge atomized liquid feed upwardly into a riser.
  • a support flange 15 is attached to an outwardly extending flange 14 of the tubular sleeve 12. The support flange 15 is to secure the spray nozzle assembly 10.
  • FIG. 1 illustrates a spray nozzle assembly 10.
  • the spray nozzle assembly includes an inner conduit 50 which is a tubular hollow part that extends in direction of a downstream end of the spray nozzle along a central axis 51 for providing a passageway for a liquid feed flow.
  • the inner conduit 50 may have an upstream outwardly extending annular flange 55 which is clamped between a shoulder defined by an annular end 38 of a fitting 40 and the downstream end of a liquid inlet orifice 45 mounted within the fitting 40.
  • the inner conduit includes a liquid inlet 22 mounted at an upstream end of the inner conduit 50 to let the liquid feed enter into the inner conduit and flow there through.
  • the liquid inlet 22 may be fixedly mounted on the inner conduit 50.
  • the liquid inlet 22 may form an integral part of the inner conduit 50.
  • the liquid inlet 22 includes the liquid inlet orifice 45 of a predetermined diameter.
  • the liquid inlet 22 is mounted such that a liquid feed supply is connected to an upstream end of the liquid inlet 22, and the supplied liquid feed then passes through the orifice member 45.
  • the orifice member 45 is to provide a liquid inlet passage through which the liquid feed is accelerated.
  • the orifice member 45 may have a conical entry section that accelerates the pressurized liquid feed stream through an orifice member passage 46.
  • the inner conduit 50 has an annulus 52, a tubular member that provides a passageway to the liquid feed entered from the liquid inlet 22.
  • the annulus 52a has a diameter larger than a diameter of the liquid inlet orifice 45 so that unimpeded flow of the liquid feed can enter into the inner conduit 50. Flow of the liquid feed passing through the annulus is directed with increased velocity towards the downstream end of the annulus.
  • a first set of discharge orifices is disposed at the downstream end of the annulus to discharge droplets of liquid feed into the mixing zone 20.
  • the first set of discharge orifices 57 extends radially outwardly with an angle about 30-90 ⁇ to the central axis 51 of the mixing zone 20.
  • the increased velocity of the flow and small discharge passage of the first set of discharge orifice 57 cause reductions in size of the droplet of the liquid feed, achieving a first level of atomization.
  • the unimpeded flow of remaining droplets of the liquid feed flow is then channeled into a smaller passage section, referred as an accelerated zone 52b.
  • the unimpeded flow from the annulus 52a enters into the accelerating zone 52b.
  • the accelerating zone increases velocity of the unimpeded flow further in direction of a downstream end of the accelerating zone.
  • the second set of discharge orifices 58 is disposed at the downstream end of the accelerating zone 52b and extends radially outwardly with an angle about 30-90 ⁇ to the central axis 51 of the mixing zone 20. A part of the accelerated liquid feed flow, passing through the accelerating zone 52b, is discharged through the second set of discharge orifices 58.
  • Accelerated velocity and small discharge passage of the second set of discharge orifice 58 cause reductions in size of the droplets of the accelerated liquid feed, achieving a first level of atomization of the accelerated liquid feed.
  • impeded droplets of the liquid feed flow with increased velocity are discharged through the first set of the discharge orifices, and further, the unimpeded droplets of the accelerated liquid flow with further increased velocity are discharged through the second set of the discharge orifices. After discharging, remaining droplets of the liquid flow form a streamline flow which is discharged through a third set of discharge orifices 54.
  • the third set of discharge orifices 54 is disposed at a closed downstream end of the accelerating zone 52b for discharging the droplets of the streamlined liquid flow.
  • the droplets discharged through the plurality of sets of the discharge orifices achieve significant reduction in size.
  • the liquid feed flow achieves the first level of atomization on discharger of the droplets through the plurality of sets of the discharge orifices.
  • the spray nozzle assembly 10 further includes an elongated tubular member 17, referred as an outer conduit.
  • the outer conduit defines the mixing zone 20 and has a gas inlet 21.
  • the outer conduit is further provisioned with an elongated barrel extension zone 24 that communicates with the mixing zone 20.
  • a spray tip 25 has a plurality of discharge orifices and is supported at a downstream end of the outer conduit 17 within the insulated wall 11 for discharging and directing the atomized liquid spray.
  • the liquid inlet 22 is also attached to the outer conduit 17 at its upstream end for securing the spray nozzle assembly 10.
  • the liquid inlet 22 also includes the fitting 40.
  • the fitting 40 has a mounting flange 41 to secure a supply line 42.
  • An upstream end of the supply line 42 is coupled to the liquid feed supply, and a downstream end of the supply line 42 is coupled to a downstream cylindrical section 44.
  • the downstream cylindrical section 44 secures an upstream axial end of the outer conduit 17. Ends of the fitting 40 and the outer conduit 17 are welded for securement.
  • the gas inlet 21 is disposed at a side wall of the outer conduit 17.
  • the gas inlet 21 is provided to allow a gas stream, for example, steam, to enter into the mixing zone 20.
  • the gas inlet 21 is fitted on the side wall of the outer conduit using a fitting 30.
  • the fitting 30 includes a mounting clamp 31 to secure a supply line 32.
  • An upstream end of the supply line 32 is coupled to a steam or gas supply and a downstream end of the supply line 32 is coupled to a counter bore section 34 which fits within an opening 35 of the outer conduit 17.
  • the counter bore section 34 is formed with an inwardly tapered conical side wall for securing the fitting 30 at the side wall of the outer conduit 17 by appropriate welding.
  • the fitting 30 provides a central flow passageway 36 with a steam inlet passage section 36a.
  • the gas stream is mixed with the liquid feed discharged from the plurality of sets of the discharge orifices in the mixing zone 20.
  • a plurality of jet tubes 80 is placed within the mixing zone to increase velocity of the gas stream. Diameter of the jet tubes is smaller than diameter of the gas inlet, specifically, 1/8* to half of the diameter of the gas inlet.
  • the mixing zone 20 provides sufficient residence time for proper mixing of the liquid feed and the gas stream that result in effective shearing of the droplets of the liquid feed. The shearing of the droplets results in significant reduction in the size of the droplets. Thus, the droplets of the liquid flow achieve a second level of atomization.
  • the mixed flow of the gas stream and the liquid feed is then directed towards an impingement wall 64 for further atomization.
  • the impingement wall 64 is a ring placed about perpendicular to the surface of the outer conduit.
  • the droplets discharged through the third set of discharge orifices are mixed with the gas stream in the mixing zone, and further are directed towards an impact surface 66 of the impingement wall 64.
  • the impingement wall 64 includes slit type discharge orifices 65.
  • the plurality of discharge orifices 65 is rectangular in shape having sharp inner edges to shear off the liquid droplets further prior to the final atomization.
  • the impingement wall 64 provides a third level of atomization.
  • the atomized liquid flow is directed towards a spray nozzle tip which is a downstream end of the spray nozzle.
  • a plurality of discharge orifices is disposed at the spray nozzle tip 25 in predetermined manner.
  • the plurality of orifices 26 at the spray nozzle tip discharges the atomized liquid droplets, resulting in further atomization of the droplets.
  • a fourth level of atomization is achieved.
  • the fourth level of atomization enables discharger of the finest droplets of the liquid in a predetermined pattern.
  • Figure 3 illustrates a cross section of the spray nozzle taken at an impingement wall of the spray nozzle.
  • the impingement wall 64 forms an outer circular boundary to accommodate a plurality of discharge orifices 65.
  • the plurality of discharge orifices are of rectangular slit type shape having sharp inner edges to shear off the droplets of the droplet passing through the plurality of discharge orifices 65.
  • An impact surface 66 forms a center of the impingement wall 64.
  • decreasing size of the diameter of the inner conduit in direction of the liquid feed flow increases velocity of the liquid feed flow.
  • utilization of the jet tubes having relatively smaller diameter than the gas inlet significantly increases velocity of the gas stream.
  • the gas inlet 21 is aligned precisely with the plurality of sets of discharge orifices (57, 58, 54) such that the gas inlet directs the gas stream over the liquid feed flow for direct shearing and atomizing the liquid feed flow effectively. Combination of the increased velocities of the streams and energy of the gas stream reduces the viscosity of the mixed flow.
  • the present embodiment increases atomization efficiency by enabling the spray nozzle assembly to be operated at low liquid pressure, such as 60 psi, which is nearly 60 -70% of the pressure requirement of conventional catalytic cracking spray nozzle assemblies.
  • the concentration and the focused direction of the gas stream passing through the jet tubes reduce quantity of the pressurized gas energy required for effective atomization.
  • the present embodiment is effective for breaking up even heavier crude oils, such as petroleum bottoms and resides, without clogging or plugging of the nozzle components.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nozzles (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

La présente invention concerne un ensemble de buses de pulvérisation (10) permettant d'utiliser une atomisation multi-étages d'une charge d'alimentation liquide pour procédé de craquage catalytique fluidisé. L'ensemble comprend un conduit interne (50) comprenant une entrée de liquide (22) pour laisser entrer un flux de charge d'alimentation liquide à travers cette dernière et un passage pour fournir un passage au flux de charge d'alimentation liquide. Le conduit interne comprend une pluralité d'ensembles d'orifices d'évacuation disposés à des emplacements spécifiques du conduit interne afin d'évacuer des gouttelettes du flux de charge d'alimentation liquide. L'ensemble (10) comprend en outre un conduit extérieur (17), comprenant une entrée de gaz (21) pour laisser entrer un courant de gaz dans le conduit extérieur. Le conduit extérieur définit une zone de mélange (20), dans laquelle la charge d'alimentation liquide et le courant de gaz sont mélangés pour obtenir l'atomisation. Le flux mélangé est évacué à travers des orifices (26) de l'embout de buse de pulvérisation.
PCT/IN2016/050182 2015-08-06 2016-06-10 Atomiseur de liquide multi-étages pour craquage catalytique fluidisé WO2017021977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2978MU2015 2015-08-06
IN2978/MUM/2015 2015-08-06

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Publication Number Publication Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018172473A1 (fr) * 2017-03-24 2018-09-27 Total Raffinage Chimie Dispositif d'injection de charge d'une unite fcc a perte de charge limitee
WO2018211531A1 (fr) * 2017-05-18 2018-11-22 Hindustan Petroleum Corporation Limited Atomiseur de fluide, unité de craquage catalytique fluidisé et procédé de craquage de combustible hydrocarboné lourd
CN108889243A (zh) * 2017-07-30 2018-11-27 李先富 一种双旋流三流喷枪
CN109663546A (zh) * 2019-02-21 2019-04-23 南京科技职业学院 一种乙酰苯胺合成专用反应器
CN111699035A (zh) * 2018-02-08 2020-09-22 道达尔炼油化学公司 Fcc设备的进料注入装置
RU2757289C2 (ru) * 2017-03-24 2021-10-12 Тотал Раффинаж Шими Улучшенное нагнетательное устройство для впрыска для установки крекинга с флюидизированным катализатором

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5948241A (en) * 1997-08-05 1999-09-07 Owen; Hartley Orifice plate feed nozzle and atomization process
US20010043888A1 (en) * 1999-08-26 2001-11-22 Ito Jackson I. Fluid atomization process
WO2015042283A1 (fr) * 2013-09-20 2015-03-26 Spraying Systems Co. Ensemble buse de pulvérisation pour craquage catalytique à haut rendement/basse pression
CN204281687U (zh) * 2014-11-21 2015-04-22 洛阳明远石化技术有限公司 一种进料喷嘴及提升管反应器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5948241A (en) * 1997-08-05 1999-09-07 Owen; Hartley Orifice plate feed nozzle and atomization process
US20010043888A1 (en) * 1999-08-26 2001-11-22 Ito Jackson I. Fluid atomization process
WO2015042283A1 (fr) * 2013-09-20 2015-03-26 Spraying Systems Co. Ensemble buse de pulvérisation pour craquage catalytique à haut rendement/basse pression
CN204281687U (zh) * 2014-11-21 2015-04-22 洛阳明远石化技术有限公司 一种进料喷嘴及提升管反应器

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018172473A1 (fr) * 2017-03-24 2018-09-27 Total Raffinage Chimie Dispositif d'injection de charge d'une unite fcc a perte de charge limitee
FR3064196A1 (fr) * 2017-03-24 2018-09-28 Total Raffinage Chimie Dispositif d'injection de charge d'une unite fcc a perte de charge limitee.
US10807057B2 (en) 2017-03-24 2020-10-20 Total Raffinage Chimie FCC unit charge injection device with limited pressure drop
RU2757289C2 (ru) * 2017-03-24 2021-10-12 Тотал Раффинаж Шими Улучшенное нагнетательное устройство для впрыска для установки крекинга с флюидизированным катализатором
RU2757285C2 (ru) * 2017-03-24 2021-10-12 Ифп Энержи Нувелль Нагнетательное устройство для впрыска для установки крекинга с флюидизированным катализатором с ограниченным перепадом давления
WO2018211531A1 (fr) * 2017-05-18 2018-11-22 Hindustan Petroleum Corporation Limited Atomiseur de fluide, unité de craquage catalytique fluidisé et procédé de craquage de combustible hydrocarboné lourd
CN108889243A (zh) * 2017-07-30 2018-11-27 李先富 一种双旋流三流喷枪
CN108889243B (zh) * 2017-07-30 2020-09-29 李先富 一种双旋流三流喷枪
CN111699035A (zh) * 2018-02-08 2020-09-22 道达尔炼油化学公司 Fcc设备的进料注入装置
CN109663546A (zh) * 2019-02-21 2019-04-23 南京科技职业学院 一种乙酰苯胺合成专用反应器
CN109663546B (zh) * 2019-02-21 2022-09-06 南京科技职业学院 一种乙酰苯胺合成专用反应器

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