GB845771A - Fluidized bed contacting process - Google Patents

Fluidized bed contacting process

Info

Publication number
GB845771A
GB845771A GB22661/57A GB2266157A GB845771A GB 845771 A GB845771 A GB 845771A GB 22661/57 A GB22661/57 A GB 22661/57A GB 2266157 A GB2266157 A GB 2266157A GB 845771 A GB845771 A GB 845771A
Authority
GB
United Kingdom
Prior art keywords
solids
catalyst
level
zone
bed
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
GB22661/57A
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 GB845771A publication Critical patent/GB845771A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J8/24—Chemical 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
    • 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
    • B01J8/24—Chemical 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
    • B01J8/34—Chemical 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
    • 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
    • B01J2208/00823—Mixing elements
    • B01J2208/00831—Stationary elements
    • B01J2208/0084—Stationary elements inside the bed, e.g. baffles

Landscapes

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

Abstract

A method of contacting gasiform material and finely divided solids in a fluidised bed of solids, such as a catalyst, in a contacting zone wherein solids entrainment with upflowing gasiform material is relatively high and more solids are removed from said bed than are introduced with the gasiform material, comprises separating entrained solids from the entraining gasiform material, passing the separated solids to a stripping zone, maintaining the level of solids in said stripping zone higher than the level of solids in said fluidised bed of solids in said contacting zone and returning solids from said stripping zone to said fluid bed in the contacting zone to maintain a desired level of solids in the fluid bed. In an example applied to the catalytic cracking of naphtha, kerosene, light or heavy <PICT:0845771/III/1> virgin gas oils, catalytic cycle gas oil, thermally cracked gas oil, deasphalted oil, solvent treated oil or reduced crude, the preheated oil is introduced into reaction vessel 10 through a line 12 and is admixed with catalyst from a regenerated catalyst stand pipe 14 having a control valve 16, and the mixture passes through a distribution grid 20 and into a short cylindrical member 22 which forms the reaction zone and is concentric with the main vessel 10. The velocity of the hydrocarbon vapours is such that catalyst is drawn over into stripping zone 24 and the vapours pass into cyclones 38 and 48 and then through outlet 56 to fractionating equipment. The level in the catalyst bed 30 is controlled by means of a differential pressure controller 72 which is operated in conjunction with pipes 74 and 76. Similarly the level of stripped catalyst 42 is controlled by controller 78 operating in conjunction with pipes 75 and 77, as a result of which slide valve 70 is appropriately adjusted.
GB22661/57A 1956-08-14 1957-07-17 Fluidized bed contacting process Expired GB845771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US845771XA 1956-08-14 1956-08-14

Publications (1)

Publication Number Publication Date
GB845771A true GB845771A (en) 1960-08-24

Family

ID=22185859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22661/57A Expired GB845771A (en) 1956-08-14 1957-07-17 Fluidized bed contacting process

Country Status (1)

Country Link
GB (1) GB845771A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207204A1 (en) 2011-05-13 2012-11-15 Bucherer Montres S.A. Balance spring i.e. helical spring, for clock i.e. mechanical clock, has masses made of two materials such that arrangement of materials is asymmetric with respect to rotation around axis, and focus of masses does not laid on axis
US11459515B2 (en) 2020-10-02 2022-10-04 Saudi Arabian Oil Company Process for upgrading hydrocarbon feedstock utilizing low pressure hydroprocessing and catalyst rejuvenation/regeneration steps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207204A1 (en) 2011-05-13 2012-11-15 Bucherer Montres S.A. Balance spring i.e. helical spring, for clock i.e. mechanical clock, has masses made of two materials such that arrangement of materials is asymmetric with respect to rotation around axis, and focus of masses does not laid on axis
US11459515B2 (en) 2020-10-02 2022-10-04 Saudi Arabian Oil Company Process for upgrading hydrocarbon feedstock utilizing low pressure hydroprocessing and catalyst rejuvenation/regeneration steps

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