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1. WO2004058918 - FOUR DE TRAITEMENT À DOUBLE CHAUFFE ET COLONNE À DOUBLE PIVOTEMENT POUR LEDIT FOUR

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1. Dual-fired processing furnace (1) for thermally treating feedstocks, said furnace including:
a ceiling (11) and base (12);
a radiant heating chamber (2), inside which there is a continuous coil of radiation exchange tubes for allowing said feedstock to follow a path back and forth inside the tubes (10) in the radiant heating chamber (2);
a main support means (4), said main support means supporting the radiation exchange tubes (10) of the coil of radiation exchange tubes, and comprising an upper bearing means and a lower bearing means;
an upper guide means (8) fixed to the ceiling (11), to which the upper bearing means of the main support means (4) is connected;
a lower support means (6) secured to the base (12), to which the lower bearing means of the main support means (4) is connected;
said connections being such as to allow thermal expansion of said main support means (4) without transmitting excessive stress to the ceiling (11).

2. Fumace according to claim 1 , wherein said lower bearing means of said main support means (4) is pivotable with respect to the lower support means (6) to which it is connected.

3. Fumace according to claim 1 or 2, wherein said upper bearing means of said main support means (4) is pivotable with respect to the upper guide means (8) to which it is connected.

4. Fumace according to any one of claims 1 to 3, wherein said upper bearing means of said main support means (4) is translatable in the generally vertical direction with respect to the upper guide means (8) to which it is connected.

5. Furnace according to claim 4, wherein said upper bearing means is translatable with respect to the upper guide means (8) by the use of a generally vertically directed elongate hole (27).

6. Furnace according to claim 5, wherein said elongate hole (27) fomis part of said upper guide means (8) and said upper bearing means further comprises an upper connecting component (7) installed in an upper housing (30A, 30B) of said main support means (4), said upper connecting component (7) being inserted into said elongate hole (27) for movement therein in the generally vertical direction.

7. Furnace according to any one of claims 1 to 6, wherein said lower support means (6) comprises a housing (32) and said lower bearing means further comprises a lower connecting component (5) installed in a lower housing (31 A, 3 IB) of said main support means (4), said lower connecting component (5) being inserted into said housing (32) to enable pivotal movement of said main support means (4) relative to said lower support means (6).

8. Fumace according to claim 6 or 7, further comprising a catch (5 A,

7A) and a securing ring (23, 28) provided at opposite ends of said connecting component (5, 7) to prevent longitudinal movement of said connecting component (5, 7) along its longitudinal axis.

9. Fumace according to any one of claims 1 to 8, wherein said main support means (4) comprises lateral reinforcement means (26A, 26B) for
strengthening the main support means against buckling due to compression applied generally vertically.

10. Fumace according to any one of claims 1 to 9, wherein said main support means (4) comprises a plurality of holes (19) to support the radiation exchange tubes (10) of the coil of radiation exchange tubes.

11. Fumace according to any one of claims 1 to 10, wherein a plurality of main support means (4), lower support means (6) and upper guide means (8) are provided to support the radiation exchange tubes (10) in the radiant heating chamber (2).

12. Fumace according to any one of claims 1 to 11, further comprising:
a convection chamber (3), inside which a number of convection exchange tubes (14) are installed, inside which the feedstock to be heated can flow, the convection exchange tubes (14) resting upon intermediate bearings (13) fixed to a side wall structure (33) of the convection chamber (3) to form a continuous coil of convection exchange tubes, allowing the feedstock to follow a continuous path back and forth inside the convection chamber (3)

13. Furnace according to claim 12, further comprising:
a flexible pipe piece (17) to interconnect the lower end of the coil of convection exchange tubes to the upper end of the coil of radiation exchange tubes; an input nozzle (16) to which the end of the first convection exchange tube

(14) of the coil of convection exchange tubes is connected;
an output nozzle (18) to which the last radiation exchange tube (10) of the coil of radiation exchange tubes is connected.

14. An industrial plant for coke production using the delayed coking process comprising a fumace according to any one of claims 1 to 13.

15. A support column for use in carrying tubes inside a processing fumace for thermally treating feedstocks, said support column comprising:- a support component (25) extending longitudinally for supporting a plurality of tubes;
an upper connecting component (7) installed inside an upper housing (30 A,

30B) positioned at the upper end of the support component (25), said upper connecting component (7) presenting a generally arcuate surface for coupling to an upper guide means (8); and
a lower coimecting component (5) installed inside a lower housing (31 A, 3 IB) positioned at the lower end of the support component (25), said lower connecting component (5) presenting a generally arcuate surface for coupling to a lower support means (6).

16. A support column according to claim 15, further comprising an upper guide means (8) having an elongate hole (27) into which the generally arcuate surface of said upper connecting component (7) is inserted so that said upper guide means (8) may pivot and translate with respect to said main support means (4).

17. A support column according to claim 15 or 16, further comprising a lower support means (6) having a housing (32) into which the generally arcuate surface of said lower connecting component (5) is inserted so that said lower support means (6) may pivot with respect to said main support means (4).

18. A support column according to any one of claims 15 to 17, further comprising lateral reinforcement means (26A, 26B).