GB1304782A - - Google Patents

Info

Publication number
GB1304782A
GB1304782A GB4205770A GB4205770A GB1304782A GB 1304782 A GB1304782 A GB 1304782A GB 4205770 A GB4205770 A GB 4205770A GB 4205770 A GB4205770 A GB 4205770A GB 1304782 A GB1304782 A GB 1304782A
Authority
GB
United Kingdom
Prior art keywords
retort
furnace
recycling
tube
return
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
GB4205770A
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 filed Critical
Publication of GB1304782A publication Critical patent/GB1304782A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/28—Moving reactors, e.g. rotary drums
    • 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
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/19—Fluorine; Hydrogen fluoride
    • C01B7/191—Hydrogen fluoride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/19—Fluorine; Hydrogen fluoride
    • C01B7/191—Hydrogen fluoride
    • C01B7/192—Preparation from fluorspar
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Processing Of Solid Wastes (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1304782 Rotary retort furnaces ALLIED CHEMICAL CORP 2 Sept 1970 [19 Dec 1969] 42057/70 Heading F4B A slightly inclined rotary retort furnace is provided with internal means for recycling part of the material therein back towards the upstream end of the furnace. Reactant materials from screw feeder 42 and pipe 44 are introduced into the inner retort tube, which is surrounded by a jacket 20 through which controlled quantities of partially recirculated combustion products from an associated combustion chamber flow (Fig. 1, not shown). An annular dam 12 midway down the furnace, causes a build up of solid product material part of which is recirculated, the remainder passing on for discharge past a gastight star valve at the other end of the furnace (Fig. 1, not shown). The recycling means comprises either one or more openended return feed tubes 100 -helically wound around the retort tube inner wall, and/or screw recycling means 60 comprising a return tube having a pair of return flight elements mounted within it, which is mounted within the retort tube to rotate therewith, and is fed by opposed scoops 70 (and see Fig. 3, not shown) which also rotate with the retort tube. When used to produce HF drawn off through flue 52, pipe 44 supplies sulphuric acid and feeder 42 fluorspar, the recycling means recycling predetermined quantities of by product calcium sulphate from upstream of the annular dam 12.
GB4205770A 1969-12-19 1970-09-02 Expired GB1304782A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88661369A 1969-12-19 1969-12-19
CH165271A CH548003A (en) 1969-12-19 1971-02-04 Lathes.

Publications (1)

Publication Number Publication Date
GB1304782A true GB1304782A (en) 1973-01-31

Family

ID=25688278

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4205770A Expired GB1304782A (en) 1969-12-19 1970-09-02
GB798272A Expired GB1304783A (en) 1969-12-19 1970-09-02

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB798272A Expired GB1304783A (en) 1969-12-19 1970-09-02

Country Status (7)

Country Link
US (1) US3607121A (en)
CA (1) CA951091A (en)
CH (1) CH548003A (en)
DE (1) DE2048226C3 (en)
FR (1) FR2072724A5 (en)
GB (2) GB1304782A (en)
NL (1) NL7017062A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805406A (en) * 1971-09-03 1974-04-23 A Castonoli Interchangeable path drying apparatus
US3741717A (en) * 1971-12-27 1973-06-26 L Triplett Grain treating apparatuses and processes of operation thereof
US3809528A (en) * 1973-09-04 1974-05-07 Fuller Co Apparatus for cooling solid particulate material
DE2435512A1 (en) * 1974-07-24 1976-02-05 Bayer Ag PROCESS FOR THE PRODUCTION OF HYDROFUEL AND CALCIUM SULFATE
US4031191A (en) * 1975-01-30 1977-06-21 E. I. Du Pont De Nemours And Company Process for producing hydrogen fluoride
DE2914964A1 (en) * 1979-04-12 1980-10-16 Bayer Ag TURNTUBE REACTOR FOR HEAT TREATING GOODS AND METHOD USING THIS TURNTUBE REACTOR
US4288217A (en) * 1980-04-28 1981-09-08 Gte Products Corporation Rotary calciner feed spiral
FI66338C (en) * 1982-12-09 1984-10-10 Ahlstroem Oy the bioreactor
US4639216A (en) * 1985-04-25 1987-01-27 Schnupp's Grain Roasting, Inc. Grain roasting machine and method
US4881947A (en) * 1988-06-28 1989-11-21 Parker Thomas H High efficiency gasifier with recycle system
US5217578A (en) * 1989-05-22 1993-06-08 Alberta Oil Sands Technology And Research Authority Dry thermal processor
US5078836A (en) * 1989-07-21 1992-01-07 Hogan Jim S Method and apparatus for retorting material
US5091157A (en) * 1990-04-30 1992-02-25 Rollins Environmental Services (Tx) Inc. Recycle conduit insulation assembly
US5851361A (en) * 1996-11-25 1998-12-22 Hogan; Jim S. Apparatus for processing an organic solid
JP4599673B2 (en) 2000-07-10 2010-12-15 ダイキン工業株式会社 Hydrogen fluoride production apparatus and production method
US7520018B2 (en) * 2001-07-25 2009-04-21 The Libman Company Mop with attached wringer
DE102008038570B4 (en) * 2008-08-20 2010-08-19 Universität Kassel Reactor with an Archimedean screw conveyor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986457A (en) * 1957-11-26 1961-05-30 Arthur J Jones Iron ore reduction
US3396953A (en) * 1965-12-22 1968-08-13 United States Steel Corp Kiln

Also Published As

Publication number Publication date
CA951091A (en) 1974-07-16
US3607121A (en) 1971-09-21
DE2048226A1 (en) 1971-06-24
NL7017062A (en) 1971-06-22
GB1304783A (en) 1973-01-31
DE2048226B2 (en) 1980-04-30
CH548003A (en) 1974-04-11
DE2048226C3 (en) 1980-12-18
FR2072724A5 (en) 1971-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee