Abstract

An arrangement (2) of a coke drum unit (4) and of a coke crushing unit (4) according to the present invention is for use in a closed, gas-tight system (102) for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit (4). It comprises coke drum unit (4) containing solidified petroleum coke; a coke crushing unit (12) for crushing the petroleum coke into sellable petroleum coke pieces arranged below the coke drum unit (4); a lower funnel (10) connected to the coke crushing unit (12) and having an upper end portion; a upper funnel (8) connected to the lower end of the coke drum unit (4) and having a lower end portion with a smaller diameter than the upper end portion of the lower funnel (20); the lower end portion of the upper funnel (8) extending into the upper end portion of the lower funnel (10); and at least one circumferential sealing element providing a gas-tight sealing between the upper funnel (8) and the lower funnel (10) and allowing for an axial and radial movement of the upper funnel (8) with respect to the lower funnel (10).

IPC Classes  ?

• C10B 33/00 - Discharging devices for coke ovensCoke guides
• C10B 1/04 - Vertical retorts
• C10B 33/14 - Coke guides

Abstract

Coke crusher (100) for crushing petroleum coke having a main housing (102) and a pair of crushing rolls (104, 106) arranged in said main housing (102) for rotation about parallel axes (108, 110), said crushing rolls (104, 106) having a predetermined diameter (d) and a predetermined spacing (W) there between from each other defining a crushing window (112). Each of said crushing rolls (104, 106) being cylindrical shaped and toothed comprising on its surface (118, 120) seizing teeth (114) and crushing teeth (116). Said teeth are arranged in a predetermined tooth pattern and project radially with a maximum height of up to half of the predetermined spacing (W) such that the crusher (100) is operateable to nip and drag coke chunks into said crushing window (112) by means of said seizing teeth (114) and to shatter and disintegrate the coke chunks by compression between said crushing rolls (104, 106) into coke pieces of a predetermined maximum size, wherein the seizing teeth (114) and crushing teeth (116) respectively comprise a tip configuration with beveled compression surfaces providing for a wedge effect so that coke chunks are disintegrated in the crushing window (112) primarily by splitting or cleaving. Further, a delayed coking system (2) comprises at least such a coke crusher (100) or such coke crusher (100) may be used in a delayed coking system (2) with an associated coke drum (4) having a bottom outlet that is coupleable to the upstream inlet (128) of the coke crusher (100).

IPC Classes  ?

• B02C 4/08 - Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers

Abstract

A closed system (2) for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit (4, 8), comprises a coke drum unit (4, 8) containing solidified petroleum coke; a coke crushing unit (6, 10) for crushing petroleum coke into sellable petroleum coke pieces; a closed slurry pipe (12) leading petroleum coke slurry to a closed slurry pit (14); a dewatering bin unit (18, 20) for receiving petroleum coke slurry from the slurry pit (14), for collecting the sellable petroleum coke pieces and for leading filtered water and petroleum coke fines out of it; a closed drain water pit (24), separate from the slurry pit (14), for receiving the filtered water and the petroleum coke fines from the dewatering bin unit (18, 20); a water settling tank (28) receiving the filtered water and the petroleum coke from the drain water pit (24) and for separating the petroleum coke fines from the water such that the petroleum coke fines collect in the bottom part of the water settling tank (28), and for leading the petroleum coke fines into the slurry pit (14) where they mix with the petroleum coke slurry; a clean water tank (29) for receiving the purified water from the upper part of the water settling tank (28); and a removal unit (52) for removing the sellable petroleum coke pieces from the dewatering bin unit (18, 20).

IPC Classes  ?

• C10B 33/00 - Discharging devices for coke ovensCoke guides
• C10B 39/04 - Wet quenching
• C10B 55/00 - Coking mineral oils, bitumen, tar or the like, or mixtures thereof, with solid carbonaceous materials