GB1435793A - Rotary furnace of the plasma-arc heating type - Google Patents

Rotary furnace of the plasma-arc heating type

Info

Publication number
GB1435793A
GB1435793A GB4483173A GB4483173A GB1435793A GB 1435793 A GB1435793 A GB 1435793A GB 4483173 A GB4483173 A GB 4483173A GB 4483173 A GB4483173 A GB 4483173A GB 1435793 A GB1435793 A GB 1435793A
Authority
GB
United Kingdom
Prior art keywords
gas
chamber
plate
enclosure
curtain
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
GB4483173A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1435793A publication Critical patent/GB1435793A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F27D11/04—Ohmic resistance heating with direct passage of current through the material being heated
    • 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
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/34—Arrangements of heating devices

Abstract

1435793 Rotary furnaces; preventing admission of air COMMISSARIAT A L'ENERGIE ATOMIQUE 25 Sept 1973 [6 Oct 1972] 44831/73 Heading F4B [Also in Division H5] In a rotary plasma arc furnace comprising a moving enclosure 2 within a stationary enclosure 1, leakage of foreign gas into the moving enclosure is prevented by a chamber 20 and a continuous gas curtain in a gap between a plate 16 attached to the end of the moving enclosure and a means 23 for forming the gas curtain, the plate defining one end of chamber 20. The gas curtain is produced by gas introduced into the gap between toroidal tube 23 and annular concave depression 24 in plate 16 through holes 25. Torus 23 is rigidly mounted on cylinder 22 attached to wall 19 of the stationary enclosure. Cylinder 22, wall 19 and plate 16, define chamber 20. The effectiveness of the gas curtain may be enhanced, either by splines 31 between the holes in tube 23 or by second, radially outer toroidal tube 23<SP>1</SP> with a flexible wall 32 that is inflated by pressure of gas in use, to co-operate with a second annular concave depression 24<SP>1</SP> in plate 16. The gas used for the curtain and which fills chamber 20 may be the process gas or one compatible therewith. The pressure in chamber 20 is maintained above ambient. The toroidal tube may be elliptical in crosssection (Fig. 2b, not shown).
GB4483173A 1972-10-06 1973-09-25 Rotary furnace of the plasma-arc heating type Expired GB1435793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7235622A FR2202583A5 (en) 1972-10-06 1972-10-06

Publications (1)

Publication Number Publication Date
GB1435793A true GB1435793A (en) 1976-05-12

Family

ID=9105324

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4483173A Expired GB1435793A (en) 1972-10-06 1973-09-25 Rotary furnace of the plasma-arc heating type

Country Status (7)

Country Link
US (1) US3830950A (en)
AU (1) AU6093373A (en)
BE (1) BE805312A (en)
CA (1) CA995984A (en)
DE (1) DE2349926A1 (en)
FR (1) FR2202583A5 (en)
GB (1) GB1435793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149629A (en) * 1983-11-07 1985-06-12 Skf Steel Eng Ab Sealing means for burner/reactor

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE806181A (en) * 1973-10-17 1974-02-15 Soudure Autogene Elect PROCESS FOR PRIMING A COLUMN OF PLASMA INSIDE AN ENCLOSURE AND ROD-ELECTRODE FOR THE EXECUTION OF THE SAID PROCESS
CA1060929A (en) * 1975-04-16 1979-08-21 Robert S. Segsworth Extended arc furnace and process for melting particulate charge therin
US4217479A (en) * 1977-04-29 1980-08-12 Swiss Aluminium Ltd. High temperature reactor
CH616348A5 (en) * 1977-04-29 1980-03-31 Alusuisse
US4443186A (en) * 1982-04-14 1984-04-17 The United States Of America As Represented By The United States Department Of Energy Solar heated rotary kiln
US5382002A (en) * 1993-10-08 1995-01-17 Evans; Marvin Apparatus for heat treating a particulate material
US5798496A (en) * 1995-01-09 1998-08-25 Eckhoff; Paul S. Plasma-based waste disposal system
US5808267A (en) * 1995-01-09 1998-09-15 Eckhoff; Paul S. Plasma gun with gas distribution plug
CN114440622B (en) * 2022-01-17 2024-01-26 上海应用技术大学 Rotary kiln body and method for reducing NOx of rotary cement kiln by adopting fuel reburning technology

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1488206A (en) * 1963-04-11 1967-07-13 Centre Nat Rech Scient Improvements made to furnaces, especially those for treating materials at high temperature
US3697660A (en) * 1970-03-16 1972-10-10 Jury Fedorovich Frolov Device for sealing gap between electrode and lining of electric arc furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149629A (en) * 1983-11-07 1985-06-12 Skf Steel Eng Ab Sealing means for burner/reactor

Also Published As

Publication number Publication date
BE805312A (en) 1974-01-16
US3830950A (en) 1974-08-20
FR2202583A5 (en) 1974-05-03
AU6093373A (en) 1975-04-10
DE2349926A1 (en) 1974-04-11
CA995984A (en) 1976-08-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees