GB788293A - Improvements in or relating to apparatus for contacting gases with finely divided solids - Google Patents

Improvements in or relating to apparatus for contacting gases with finely divided solids

Info

Publication number
GB788293A
GB788293A GB22091/54A GB2209154A GB788293A GB 788293 A GB788293 A GB 788293A GB 22091/54 A GB22091/54 A GB 22091/54A GB 2209154 A GB2209154 A GB 2209154A GB 788293 A GB788293 A GB 788293A
Authority
GB
United Kingdom
Prior art keywords
vessel
catalyst
diplegs
gas
lift
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.)
Expired
Application number
GB22091/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB788293A publication Critical patent/GB788293A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/34Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with stationary packing material in the fluidised bed, e.g. bricks, wire rings, baffles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/38Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it
    • B01J8/384Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only
    • B01J8/388Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only externally, i.e. the particles leaving the vessel and subsequently re-entering it

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In apparatus for hydroforming hydrocarbons in the presence of a dense fluidized mass of finely-divided catalyst 12, Fig. 1, the feed and catalyst are introduced at 18 into vessel 10, catalyst is removed at 28, and one or more cyclone separators 36, 54 arranged in the upper part of the vessel are provided with diplegs 38, 56 leading to U-bends 40, 58 from which risers 42, 63 extend upwardly; gas is introduced at 44, 62 to fluidize the catalyst in the diplegs and risers, and additional gas enters at 48, 66 to reduce the density of the fluidized mass in the risers. This arrangement permits the height of the vessel above the fluidized bed to be reduced and provides seals in the diplegs between the cyclones and the fluidized bed to prevent reversal of flow of catalyst in the diplegs. Catalyst is withdrawn from vessel 10 through reservoir 24 into which stripping gas enters at 32. The gases <PICT:0788293/IV (b)/1> <PICT:0788293/IV (b)/2> leaving the bed 12 pass in series through the separators 36, 54 and leave the vessel at 70. In a modification, Fig. 2, the U-bends are replaced by lift pots 154, 184. The dipleg from primary separator 136 leads to seal pot 142 into which gas is introduced at 144 and from which catalyst overflows into bed 112. Dipleg 152 from secondary separator 148 extends into lift pot 154 from which riser 158 extends upwardly; aerating gas is fed in at 172 and additional gas is introduced into riser 158 through pipe 164. Pipe 182 from tertiary separator 174 extends outside the vessel 110 to lift pot 184 which operates in the same way as lift pot 154. The apparatus will operate with varying levels of the fluidized bed, e.g. at 114 or 176. Each catalyst separation stage may comprise more than one cyclone, with the diplegs leading to a common lift-pot. An alumina-molybdenum oxide catalyst may be used and hydroforming carried out at a pressure of 100-300 p.s.i.g. and a temperature of 850-950 DEG F.ALSO:<PICT:0788293/III/1> <PICT:0788293/III/2> In apparatus for effecting contact between a gas and a dense fluidized mass of finely-divided solids 12, Fig. 1, gas and solids are introduced at 18 into vessel 10, solids are removed at 28, and one or more cyclone separators 36, 54 arranged in the upper part of the vessel are provided with diplegs 38, 56 leading to U-bends 40, 58 from which risers 42, 63 extend upwardly; gas is introduced at 44, 62 to fluidize the solids in the diplegs and risers, and additional gas enters at 48, 66 to reduce the density of the fluidized mass in the risers. This arrangement permits the height of the vessel above the fluidized bed to be reduced and provides seals in the diplegs between the cyclones and the fluidized bed to prevent reversal of flow of solids in the diplegs. Solids are withdrawn from vessel 10 through reservoir 24 into which stripping gas enters at 32. The gases leaving the bed 12 pass in series through the separators 36, 54 and leave the vessel at 70. In a modification, Fig. 2, the U-bends are replaced by lift pots 154, 184. The dipleg from primary separator 136 leads to seal pot 142 into which gas is introduced at 144 and from which solid overflows into bed 112. Dipleg 152 from secondary separator 148 extends into lift pot 154 from which riser 158 extends upwardly; aerating gas is fed in at 172 and additional gas is introduced into riser 158 through pipe 164. Pipe 182 from tertiary separator 174 extends outside the vessel 110 to lift pot 184 which operates in the same way as lift pot 154. The apparatus will operate with varying levels of the fluidized bed, e.g. at 114 or 176. Each solid separation stage may comprise more than one cyclone, with the diplegs leading to a common lift-pot. The apparatus may be used for catalytic cracking in the presence of silicaalumina catalyst, for hydroforming in the presence of alumina-molybdenum oxide catalyst, or for catalyst regeneration with air. Reference is also made to processes of thermal cracking, coking and adsorption.
GB22091/54A 1953-08-05 1954-07-28 Improvements in or relating to apparatus for contacting gases with finely divided solids Expired GB788293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US788293XA 1953-08-05 1953-08-05

Publications (1)

Publication Number Publication Date
GB788293A true GB788293A (en) 1957-12-23

Family

ID=22146453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22091/54A Expired GB788293A (en) 1953-08-05 1954-07-28 Improvements in or relating to apparatus for contacting gases with finely divided solids

Country Status (3)

Country Link
BE (1) BE530780A (en)
GB (1) GB788293A (en)
NL (1) NL248970A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110041967A (en) * 2018-04-25 2019-07-23 新能能源有限公司 The second level whirlwind feed back and afterheat utilizing system of high temperature and high pressure flue gas
CN114405418A (en) * 2022-02-25 2022-04-29 北京石油化工工程有限公司 System and method for producing methyl methacrylate by using methanol and methyl propionate as raw materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110041967A (en) * 2018-04-25 2019-07-23 新能能源有限公司 The second level whirlwind feed back and afterheat utilizing system of high temperature and high pressure flue gas
CN110041967B (en) * 2018-04-25 2023-12-22 新能能源有限公司 Secondary cyclone return material and waste heat utilization system for high-temperature and high-pressure flue gas
CN114405418A (en) * 2022-02-25 2022-04-29 北京石油化工工程有限公司 System and method for producing methyl methacrylate by using methanol and methyl propionate as raw materials
CN114405418B (en) * 2022-02-25 2023-04-14 北京石油化工工程有限公司 System and method for producing methyl methacrylate by using methanol and methyl propionate as raw materials

Also Published As

Publication number Publication date
NL248970A (en)
BE530780A (en)

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