GB723653A - Improved method and apparatus for controlling a fluidised solid mass - Google Patents

Improved method and apparatus for controlling a fluidised solid mass

Info

Publication number
GB723653A
GB723653A GB2775351A GB2775351A GB723653A GB 723653 A GB723653 A GB 723653A GB 2775351 A GB2775351 A GB 2775351A GB 2775351 A GB2775351 A GB 2775351A GB 723653 A GB723653 A GB 723653A
Authority
GB
United Kingdom
Prior art keywords
mass
container
level
density
electrode
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
GB2775351A
Inventor
Desmond Fitzgerald
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.)
National Coal Board
Original Assignee
National Coal Board
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 National Coal Board filed Critical National Coal Board
Priority to GB2775351A priority Critical patent/GB723653A/en
Publication of GB723653A publication Critical patent/GB723653A/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
    • B01J8/1809—Controlling processes
    • 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
    • B01J2208/00008—Controlling the process
    • B01J2208/00584—Controlling the density
    • 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
    • B01J2208/00008—Controlling the process
    • B01J2208/0061—Controlling the level
    • 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
    • B01J2208/00008—Controlling the process
    • B01J2208/00654—Controlling the process by measures relating to the particulate material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

723,653. Automatic liquid level and density control systems. NATIONAL COAL BOARD. Nov. 27, 1952 [Nov. 27, 1951], No. 27753/51. Class 38 (4). [Also in Group XXXVI] Apparatus for determining the level of a fluidized mass in a metal container or its density, by measuring the capacity between the container and an electrode located above the mass, for determining the level, or immersed in the mass, for determining the density, in a bridge circuit wherein the unbalance current is utilized to control the rate of entry of the constituents of the container. For measuring and controlling the level 8 of the fluidized mass 9 in metal container 1 the capacity between the container and an insulated electrode 6 protruding into the container just above the normal level 8 is determined in a bridge circuit 10, the unbalance current energizing a relay 12, whereby a spring-loaded armature 14 causes compressed air to move a piston 19 attached to a slide valve 21 having a bore 22, to vary the rate at which the container is being discharged. The electrode 6 is maintained clean by a jet of inert gas. For controlling the density of the mass 9, the electrode 6 extends vertically through the mass, and the slide valve 21 controls the entry of fluidizing gas at 3. In a further embodiment a plurality of electrodes 6 are assembled at different heights in the mass 9, each indicating via a bridge circuit the density of the mass at that level.
GB2775351A 1951-11-27 1951-11-27 Improved method and apparatus for controlling a fluidised solid mass Expired GB723653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2775351A GB723653A (en) 1951-11-27 1951-11-27 Improved method and apparatus for controlling a fluidised solid mass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2775351A GB723653A (en) 1951-11-27 1951-11-27 Improved method and apparatus for controlling a fluidised solid mass

Publications (1)

Publication Number Publication Date
GB723653A true GB723653A (en) 1955-02-09

Family

ID=10264708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2775351A Expired GB723653A (en) 1951-11-27 1951-11-27 Improved method and apparatus for controlling a fluidised solid mass

Country Status (1)

Country Link
GB (1) GB723653A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038217B (en) * 1955-12-27 1958-09-04 Exxon Research Engineering Co Method and apparatus for controlling a catalytic hydrocarbon conversion system
US2888945A (en) * 1955-12-21 1959-06-02 Robertshaw Fulton Controls Co Capacity level control and improved probe
EP0093801A2 (en) * 1982-05-11 1983-11-16 KRW Energy Systems Inc. Control of bed height in a fluidized bed gasification system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888945A (en) * 1955-12-21 1959-06-02 Robertshaw Fulton Controls Co Capacity level control and improved probe
DE1038217B (en) * 1955-12-27 1958-09-04 Exxon Research Engineering Co Method and apparatus for controlling a catalytic hydrocarbon conversion system
EP0093801A2 (en) * 1982-05-11 1983-11-16 KRW Energy Systems Inc. Control of bed height in a fluidized bed gasification system
EP0093801A3 (en) * 1982-05-11 1984-10-03 Westinghouse Electric Corporation Control of bed height in a fluidized bed gasification system

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