Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
  • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
• • 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
  • B01J8/005—Separating solid material from the gas/liquid stream
  • B01J8/0055—Separating solid material from the gas/liquid stream using cyclones
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
  • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
  • B04C5/24—Multiple arrangement thereof
  • B04C5/26—Multiple arrangement thereof for series flow
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
• • 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
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
  • B01D46/16—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces arranged on non-filtering conveyors or supports

Definitions

• the present disclosed subject matter relates to cyclone assemblies, and particularly stabilizer assemblies to secure and stabilize cyclone assemblies within a multi-phase reaction bed vessel.
• Fluid catalytic cracking (FCC) processes are used for petroleum and petrochemical conversion processes. These processes can provide efficient and selective catalytic cracking of hydrocarbon-containing feedstock. For example, small catalyst particles can be fluidized and mixed with a feedstock by intimate contact under thermally active conditions to generally produce lower molecular weight“cracked” products. FCC processes are beneficial due at least in part to the ability to continuously recycle and regenerate the spent catalysts and to process large volumes of hydrocarbon-containing feedstock.
• fluidized catalytic cracking reactor riser and reactor vessel designs can be utilized.
• certain fluidized catalytic cracking reactors utilize a short contact-time cracking configuration. With this configuration, the catalyst contacts the fluidized catalytic cracker feedstream for a limited time in order to reduce excessive cracking, which can result in the increased production of less valued products such as light hydrocarbon gases, as well as increased coking deposition on the cracking catalysts.
• Certain fluidized catalytic cracking configurations utilize a reactor riser cracking configuration wherein the catalyst can contact the fluidized catalytic cracker feedstock in a reactor riser, and the catalyst and the hydrocarbon reaction products can be separated shortly after the catalyst and hydrocarbon mixture flows from the reactor riser into the fluidized catalytic cracking reactor.
• Many different fluidized catalytic cracking reactor designs are known. For example, certain designs utilize mechanical cyclones internal to the reactor to separate the catalyst from the hydrocarbon reactor products. This separation process can reduce post-riser reactions between the catalyst and the hydrocarbons as well as separate the cracked hydrocarbon products for further processing from the spent catalyst, which can be regenerated and reintroduced into the reaction process.
• Mechanical cyclone assemblies generally can include a plurality of cyclones joined together and secured to the pressure vessel of the reactor.
• An insufficiently balanced and supported cyclone system can produce a vibration frequency, which can promote metal fatigue and lead to mechanical failure.
• a plurality of flat plate hanger straps typically are utilized to support one or more of the cyclones to the pressure vessel.
• the conventional hanger strap support system can be challenging to engineer, particularly to provide support points for uniformly balancing the cyclone system.
• An unbalanced cyclone system can cause an axial tilt of one or more cyclones, which can depreciate the overall cyclone system stability and performance during the system run cycle.
• an increased length of the hanger straps can lead to increased thermal expansion during system operation.
• Hanger straps exceeding a desired length can lead to over-expansion of one or more of the cyclones, which can cause an axial tilt of the cyclone system and thus inefficiencies.
• Cyclone systems can be further stabilized from vibration by restraining the dipleg conduits of the cyclones from movement.
• cyclone pairs can be joined to other cyclone pairs by one or more braces.
• braces can be used to join three cyclones in a triangular fashion.
• certain cyclone arrangements can be unsuitable for such a triangular integration, for example if fewer than three cyclones are employed.
• space limitations and interference from other hardware can restrict the area available to form a desired bracing arrangement.
• non- uniform thermal movement between the pressure vessel shell and the cyclone system can reduce the effectiveness of such a bracing arrangement.
• the disclosed subject matter includes an integrated cyclone stabilizer assembly.
• the assembly includes an upper annular ring to be disposed at an upper portion of the cyclone, a lower annular ring to be disposed at a lower portion of the cyclone, and a plurality of struts extending between the upper annular ring and the lower annular ring.
• the upper annular ring has a plurality of hinge members extending radially therein to support the upper portion of the cyclone therefrom.
• the lower annular ring has a plurality of hinge members extending radially therein to support the lower portion of the cyclone therefrom.
• the upper ring can be disposed proximate an upper end of the conduit, and the lower ring can be disposed proximate a lower end of the conduit.
• the upper ring can have a cross dimension at least about 30% greater than a cross dimension of the lower ring.
• the plurality of hinge members can include one or more flat plate hinges.
• Three hinge members can extend radially inward from the upper ring. Additionally or alternatively, three hinge members can extend radially inward from the lower ring.
• the hinge members of the upper ring can be aligned with corresponding hinge members of the lower ring.
• each strut can extend from and can be joined to one of the plurality of hinge members of the upper ring and to one of the plurality of hinge members of the lower ring.
• the upper ring can include three hinge members
• the lower ring can include three hinge members and three struts can extend between the upper ring and the lower ring.
• the assembly can include at least one connecting member to couple at least one of the upper and lower rings to a corresponding annular ring of a similarly-configured stabilizer assembly for another cyclone.
• the upper ring can include two connecting members extending tangentially to an upper ring of the similarly-configured stabilizer assembly
• the lower ring can include two connecting members extending tangentially to a lower ring of the similarly-configured stabilizer assembly.
• a cyclone assembly can include a primary cyclone, a primary cyclone assembly, a secondary cyclone and a secondary cyclone assembly.
• the primary stabilizer assembly includes an upper annular ring disposed at an upper portion of the primary cyclone, and a lower annular ring disposed at a lower portion of the primary cyclone.
• the upper annular ring has a plurality of hinge members extending radially therein to support the upper portion of the primary cyclone therefrom.
• the lower annular ring has a plurality of hinge members extending radially therein to support the lower portion of the primary cyclone therefrom.
• the secondary stabilizer assembly includes an upper annular ring disposed at an upper portion of the secondary cyclone, and a lower annular ring disposed at a lower portion of the secondary cyclone.
• the upper annular ring has a plurality of hinge members extending radially therein to support the upper portion of the secondary cyclone therefrom.
• the lower annular ring has a plurality of hinge members extending radially therein to support the lower portion of the secondary cyclone therefrom.
• a plurality of struts extend between the upper annular ring and the lower annular ring. At least one connecting member couples at least one of the upper and lower rings of the primary stabilizer assembly to a corresponding annular ring of the secondary stabilizer assembly.
• the secondary cyclone can include an outlet tube extending therefrom.
• the primary cyclone can be operatively coupled with the secondary cyclone.
• the outlet tube can have a cross dimension and length and can be configured to be secured to a pressure vessel closure head to support the secondary cyclone therefrom.
• the primary cyclone can have a tubular support member extending therefrom. The tubular support member can be aligned substantially parallel with and can have a length similar to the outlet tube of the secondary cyclone and can be configured to be joined to the pressure vessel closure head to support the primary cyclone therefrom.
• FIG. 1 is a partial cross-sectional view illustrating a conventional cyclone assembly for purpose of illustration and comparison to the disclosed subject matter.
• FIG. 2 is a partial cross-sectional top view illustrating the cyclone assembly taken along line 2-2 of FIG. 1.
• FIG. 3 is an elevated perspective view illustrating an exemplary integrated cyclone stabilizer assembly according to the disclosed subject matter.
• FIG. 4 is a side view of the cyclone stabilizer assembly of FIG. 3.
• FIG. 5 is a cross-sectional side view illustrating an exemplary cyclone assembly in a reactor bed vessel according to the disclosed subject matter.
• FIG. 6 is a detail side view of a lower portion of the cyclone stabilizer assembly of FIG. 3.
• FIG. 7 is an enlarged detail perspective view of region 7 of FIG. 6.
• FIG. 8 is a partial perspective view of the cyclone stabilizer assembly of FIG. 3, with portions removed.
• FIG. 9 is a partial elevation view of an exemplary integrated primary and secondary cyclone assembly according to another aspect of the disclosed subject matter.
• FIG. 10 is a partial cross-sectional side view of the conventional cyclone assembly of FIG. 1, for purpose of comparison with the exemplary integrated primary and secondary cyclone assembly of FIG. 9.
• FIG. 11 is a partial cross-sectional side view of the exemplary integrated primary and secondary cyclone assembly of FIG. 9.
• FIG. 12 is a partial detail perspective view of a portion of the exemplary integrated primary and secondary cyclone assembly of FIG. 9.
• FIG. 13 is a cross-sectional view of another exemplary integrated primary and secondary cyclone assembly according to the disclosed subject matter.
• the apparatus and methods presented herein can be used for securing and/or stabilizing any of a variety of suitable cyclone systems, including any cyclone dust separator systems utilizing a support and/or stabilizer system to overcome operating conditions in a reactor bed pressure vessel.
• the reactor bed vessel can be a fluidized bed reactor or a packed bed reactor having one or more cyclone systems for use in separating hydrocarbons from a catalyst. Additional details regarding fluidized bed reactors and other aspects of fluidized catalytic cracking (FCC) processes are provided in U.S. Patent No. 8,349,170 and U.S. Patent Application Publication Nos. 2011/0240526 and
• the integrated cyclone stabilizer assembly generally includes an upper annular ring to be disposed at an upper portion of the cyclone, a lower annular ring to be disposed at a lower portion of the cyclone, and a plurality of struts extending between the upper annular ring and the lower annular ring.
• the upper annular ring has a plurality of hinge members extending radially therein to support the upper portion of the cyclone therefrom.
• the lower annular ring has a plurality of hinge members extending radially therein to support the lower portion of the cyclone therefrom.
• FIGS. 3-8 exemplary embodiments of the cyclone assembly in accordance with the first aspect of the disclosed subject matter are shown in FIGS. 3-8. While the present disclosed subject matter is described with respect to cyclone assemblies for a bed reactor in a fluid catalytic cracking process, one skilled in the art will recognize that the disclosed subject matter is not limited to the illustrative embodiment, and that the stabilizer assembly can be used to secure and/or stabilize any suitable component of a suitable chamber.
• the conventional cyclone assembly 10 includes a plurality of similarly- configured primary cyclone 100 and secondary cyclone 200 pairs systematically joined. Each pair of the primary cyclone 100 and secondary cyclone 200 can be suspended from an upper portion of the pressure vessel, wherein each primary cyclone 100 and secondary cyclone 200 can include a dipleg conduit 300, 400, respectively. Operating conditions within the vessel, including vibration due to cyclone operation and thermal movements due to heating and cooling can cause the cyclone assembly 10 to sway off its natural axis.
• the dipleg conduit 300 of a primary cyclone 100 can be joined to the dipleg conduit 400 of two secondary cyclones 200 using braces 500 in a triangular bracing pattern.
• FIG. 2 illustrates a bracing pattern utilized to brace a cyclone assembly of four pairs of primary and secondary cyclone dipleg conduits 300, 400.
• this technique is ineffective, for example if the system includes fewer than three cyclone pairs.
• the primary cyclone 100 and the secondary cyclone 200 can be integrated, for example, by weld-sealing, which can establish a continuous fluid process connection between the primary cyclone 100 and the secondary cyclone 200.
• the secondary cyclone 200 is supported by its conventional outlet tube 450 through an opening in the plenum chamber floor 650, as illustrated in FIGS. 10 and 13.
• the primary cyclone 100 is conventionally supported by a plurality of flat hanger straps 350 disposed proximate the exterior cyclone barrel of the primary cyclone 100 and joined to the nearest pressure vessel hardware surfaces, which can include one or more of the plenum skirt 550 and the plenum chamber floor 650.
• an integrated cyclone stabilizer 600 for a cyclone assembly 20 is provided.
• the integrated cyclone stabilizer 600 can be utilized to integrate a single pair of primary and secondary cyclones 100, 200.
• the integrated cyclone stabilizer 600 can overcome vibration due to operating cycle frequencies and can provide uniform thermal movement.
• the integrated cyclone stabilizer 600 according to the disclosed subject matter thus can be shop fabricated and can be made free of attachments to neighboring cyclone assemblies or the pressure vessel shell 120.
• integrated cyclone stabilizer 600 can be formed from flat plate, rolled plate and/or standard straight pipe of suitable materials, such as carbon steel or stainless steel plate, and assembled together using suitable techniques, such as welding or the like. Multiple subassemblies 700 can be formed concentric to each cyclone 100, 200, and can be further joined to form a robust architecture, as discussed further herein.
• each subassembly 700 can include an upper annular ring 1000, a lower annular ring 1005 and a plurality of struts 800 extending therebetween.
• each annular ring 1000, 1005, one or more hinge members 900 can extend between and be secured to the annular ring and the dipleg conduit 300, 400 of the corresponding cyclone 100, 200.
• each subassembly 700 can include three equally-spaced apart hinge members 900 associated with each annular ring.
• top ring 1000 can have a diameter approximately 30% larger, and in some embodiments up to about 40% larger, than bottom ring 1005.
• flat hinge plates 900 can be substantially equal in size at least for each ring assembly, or throughout the subassembly as appropriate.
• tripod struts 800 can be sized and evenly spaced to join to the upper and lower rings 1000, 1005.
• struts 800 can be substantially aligned with hinges 900 of each ring 1000, 1005, as shown for example in FIG. 6.
• the tripodal configuration of the struts 800 thus are configured to restrict or prevent the offset of the dipleg conduits 300, 400 from their central axis.
• a pair of subassemblies 700, 1100 can be combined to form the integrated cyclone stabilizer 600.
• a pair of subassemblies 700, 1100 can be combined to form the integrated cyclone stabilizer 600.
• a similarly-configured subassembly 1100 is formed about dipleg conduit 300 of the primary cyclone 100.
• Each of subassemblies 700, 1100 can be attached to its respective dipleg 300, 400.
• the pair of subassemblies 700, 1100 can be joined together, such as by one or more connecting members 1300.
• two connecting members 1300 can be formed from straight horizontal pipe and welded at points tangential to each of the adjacent rings 1000, 1005 of the subassemblies 700, 1100.
• the integration of the subassemblies 700, 1100 forming the integrated cyclone assembly 600 provides an additional level of rigid architecture, to further prevent axial deviation of the cyclone diplegs 300, 400 but allow for thermal radial and downward expansion movement thereof.
• the integrated cyclone stabilizer according to the disclosed subject matter provides a compact architecture to integrate a pair of primary and secondary cyclone bodies and their respective dipleg conduits without the need for additional supports.
• the stabilizer can join the cyclone assembly in a manner that can restrict or prevent axial movement at the end of the diplegs while allowing for overall downward movement due at least in part to thermal expansion.
• the integrated cyclone stabilizer according to the disclosed subject matter can be provided free of attachment to the pressure vessel shell or any other supports points or brace attachment points. As such, the integrated cyclone stabilizer can provide a self- contained union of a single primary and secondary cyclone pair.
• the integrated cyclone stabilizer can be entirely shop fabricated and pre-assembled in the cyclone system prior to installation into the pressure vessel.
• the integrated cyclone stabilizer can also be formed so as to not impede customary fabrication techniques of the pressure vessel or impact normal internal vessel inspection access or limit maintenance procedures.
• the compact design of the integrated cyclone stabilizer can be integrated to avoid internal hardware interferences.
• the reduced mechanical complexity of the integrated cyclone stabilizer can reduce fabrication, installation, and unit maintenance and material costs.
• an integrated primary and secondary cyclone assembly includes a secondary cyclone having an outlet tube extending therefrom and a primary cyclone operatively coupled with the secondary cyclone.
• the outlet tube has a cross dimension and length and is configured to be secured to a pressure vessel closure head to support the secondary cyclone therefrom.
• the primary cyclone has a tubular support member extending therefrom. The tubular support member is aligned substantially parallel with and has a length similar to the outlet tube of the secondary cyclone and is configured to be joined to the pressure vessel closure head to support the primary cyclone therefrom.
• the integrated cyclone assembly 20 includes primary and secondary cyclones 100, 200 joined to the pressure vessel 120.
• the secondary cyclone 200 is supported by its outlet tube 450 extending from the secondary cyclone 200 and secured to the pressure vessel closure head through an opening in the plenum chamber floor 650.
• the primary cyclone 100 does not include such an outlet tube.
• a tubular support member 750 is provided extending from the primary cyclone 100 and coupled to a proximate surface of the plenum chamber floor 650, if provided.
• the assembly herein can likewise be used in a vessel with no internal plenum.
• the tubular support member 750 can have a central axis 752 aligned along the concentric axis 754 of the primary cyclone 100. Furthermore, and as described below, the tubular support 750 is selected of a size and material to mirror that of the outlet tube 450 of the secondary cyclone 200. In this manner, the support for each cyclone 100, 200 will generally act in union with regard to vibration and thermal expansion.
• the integrated cyclone assembly 20 with the tubular support member 750 can thus provide suitable support for the integrated primary and secondary cyclones 100, 200, and can allow for improved thermal movement of the cyclones while utilizing less material.
• the conventional cyclone assembly 10 of FIG. 1 is shown side-by-side with the integrated cyclone assembly 20 of FIG. 9 according to the disclosed subject matter for purpose of illustration and comparison.
• the conventional assembly 10 and the integrated cyclone assembly 20 are each joined to the pressure vessel closure head 850, for example in a pressure vessel 120 that does not utilize an internal plenum chamber.
• hanger straps 350 are welded to the primary cyclone 100 and to the pressure vessel closure head 850.
• the integrated cyclone assembly 20 includes the tubular support 750 secured to the pressure vessel closure head 850.
• the tubular support 750 is sized to allow for improved thermal movement of the cyclones while utilizing less material, as discussed further herein.
• the tubular support member 750 can be welded to the inside surface of the pressure vessel closure head 850. Additionally, the pressure vessel closure head 850 can include refractory insulation formed from materials that are common in industry practice to prevent elevated material temperatures at the attachment point of the tubular support member 750.
• the conventional cyclone assembly 10 of FIG. 10 can be compared with the integrated cyclone assembly 20 as depicted in FIG. 12, for purpose of illustration and comparison of additional features of the disclosed subject matter.
• the use of conventional hanger straps 350 requires configurations where the actual hanger strap 350 length A is greater than a desired hanger strap 350 length B. That is, a desired hanger strap 350 length B can be measured between the cross-over duct 1050 of the primary cyclone 100 and the support surface of the pressure vessel 850, and thus such a desired length can be within a range of about 12 inches to 24 inches.
• the tubular support member 750 can have a length C that is approximately equal in length to the outlet tube 450 configured to support the secondary cyclone 200 within the vessel shell 120.
• the integrated primary and secondary cyclones 100, 200 can have a similar, parallel movement due to thermal expansion of the tubular support member 750 and the outlet tube, and thus can have improved stability and support during operation of the cyclones.
• the tubular support member 750 can have a cross-dimension c1 that is approximately equal to a cross-dimension c2 of the outlet tube 450 of the secondary cyclone.
• the tubular support member 750 can be formed from a material having a similar coefficient of thermal expansion as that of the outlet tube 450.
• the member 750 and the vessel shell 120 are formed from the same material to avoid uneven thermal expansion and contraction between these components.
• a tubular support member 755 can join the primary cyclone 100 to the plenum skirt 550 of the pressure vessel 125 using a flexible hinge 950 of suitable material, such as stainless steel or carbon steel.
• suitable material such as stainless steel or carbon steel.
• Such a configuration can be utilized, for example and without limitation, to provide a tubular support member 755 for the primary cyclone 100 in a pressure vessel having a reduced diameter D1, wherein the tubular support member 755 cannot be joined directly to the pressure vessel head 850.
• the smaller diameter plenum chamber can allow for reduced costs in material, fabrication, installation and operational expenses.
• the tubular support members 750, 755 can be fabricated, for purpose of illustration and not limitation, from a standard pipe or a metal sheet rolled to form the desired diameter and cut to the desired length. Furthermore, and as embodied herein, the tubular support members 750, 755 can be formed having a wall thickness that is similar to the wall thickness of the outlet tube 450. In this manner, the tubular support members 750, 755 can be entirely shop fabricated and pre-assembled to the cyclone assembly 20, 25 prior to installation in to the pressure vessel 120, 125.
• the reduced size of the tubular support members 750, 755 compared to hanger straps 350 can allow for increased space within the pressure vessel 120, 125, for example to provide increased space for inspection access and/or maintenance procedures.
• the compact design of the tubular support members 750, 755 can be integrated to avoid internal hardware interferences.
• the reduced mechanical complexity of the tubular support members 750, 755 can reduce fabrication, installation, and unit maintenance and material costs.
• the assembly described herein can be utilized in any reactor system or process for petroleum refinement or petrochemical refinement utilizing fluid bed technology and cyclone systems. It is contemplated that the presently disclosed subject matter may, for example, be used in connection with various fluid bed technologies utilizing cyclone systems including but not limited to (i) the preparation of at least one of phthalic anhydride, vinyl acetate, acrylonitrile, ethylene dichloride, chloromethane, maleic anhydride, polyethylene, polypropylene and o-cresol; (ii) Fischer-Tropsch synthesis; (iii) resid cat cracking; (iv) the conversion of at least one methanol to olefins (MTO), methanol to aromatics (MTA), methanol to paraxylene (MTP), methanol to gasoline (MTG), Methanol to diesel (MTD), syngas to olefins, syngas to aromatics, syngas to paraxylene, coal to olef
• Embodiment 1 An integrated cyclone stabilizer assembly for a cyclone having a body and a conduit extending therefrom, the assembly comprising: an upper annular ring to be disposed at an upper portion of the cyclone, the upper annular ring having a plurality of hinge members extending radially therein to support the upper portion of the cyclone therefrom; a lower annular ring to be disposed at a lower portion of the cyclone, the lower annular ring having a plurality of hinge members extending radially therein to support the lower portion of the cyclone therefrom; and a plurality of struts extending between the upper annular ring and the lower annular ring.
• Embodiment 2 The assembly of Embodiment 1, wherein the upper ring is disposed proximate an upper end of the conduit, and the lower ring is disposed proximate a lower end of the conduit.
• Embodiment 3 The assembly according to anyone of Embodiments 1 or 2, wherein the upper ring has a cross dimension at least about 30% greater than a cross dimension of the lower ring.
• Embodiment 4 The assembly according to anyone of Embodiments 1-3, wherein the plurality of hinge members comprise one or more flat plate hinges.
• Embodiment 5 The assembly according to anyone of Embodiments 1-4, wherein three hinge members extend radially inward from the upper ring.
• Embodiment 6 The assembly according to anyone of Embodiments 1-5, wherein three hinge members extend radially inward from the lower ring.
• Embodiment 7 The assembly according to anyone of Embodiments 1-6, wherein the hinge members of the upper ring are aligned with corresponding hinge members of the lower ring.
• Embodiment 8 The assembly of Embodiment 7, wherein each strut extends from and is joined to one of the plurality of hinge members of the upper ring and to one of the plurality of hinge members of the lower ring.
• Embodiment 9 The assembly of Embodiment 8, wherein the upper ring includes three hinge members and the lower ring includes three hinge members, and further wherein three struts extend between the upper ring and the lower ring.
• Embodiment 10 The assembly according to anyone of Embodiments 1-10, further comprising at least one connecting member to couple at least one of the upper and lower rings to a corresponding annular ring of a similarly-configured stabilizer assembly for another cyclone.
• Embodiment 11 The assembly of Embodiment 10, wherein the upper ring includes two connecting members extending tangentially to an upper ring of the similarly-configured stabilizer assembly, and the lower ring includes two connecting members extending tangentially to a lower ring of the similarly-configured stabilizer assembly.
• a cyclone assembly comprising: a primary cyclone; a primary stabilizer assembly comprising: an upper annular ring disposed at an upper portion of the primary cyclone, the upper annular ring having a plurality of hinge members extending radially therein to support the upper portion of the primary cyclone therefrom; a lower annular ring disposed at a lower portion of the primary cyclone, the lower annular ring having a plurality of hinge members extending radially therein to support the lower portion of the primary cyclone therefrom; and a plurality of struts extending between the upper annular ring and the lower annular ring; a secondary cyclone; a secondary stabilizer assembly comprising:an upper annular ring disposed at an upper portion of the secondary cyclone, the upper annular ring having a plurality of hinge members extending radially therein to support the upper portion of the secondary cyclone therefrom; a lower annular ring disposed at a lower portion of
• Embodiment 13 The cyclone assembly of Embodiment 12, wherein the secondary cyclone has an outlet tube extending therefrom, the outlet tube having a cross dimension and length, the outlet tube configured to be secured to a pressure vessel closure head to support the secondary cyclone therefrom; and wherein the primary cyclone is operatively coupled with the secondary cyclone, the primary cyclone having a tubular support member extending therefrom, the tubular support member aligned substantially parallel with and having a length similar to the outlet tube of the secondary cyclone and configured to be joined to the pressure vessel closure head to support the primary cyclone therefrom.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Combustion & Propulsion (AREA)
• General Chemical & Material Sciences (AREA)
• Cyclones (AREA)
• Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

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• 2013
  • 2013-12-05 US US14/097,631 patent/US9266123B2/en not_active Expired - Fee Related
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