摘要:
A reactor for thermocracking a fluid comprising a heat exchanger means (12) having at least one tube (14) for conveying the fluid stream from a respective tube inlet (16) to a tube outlet (18) while contacting the at least one tube with a high temperature medium to effect heat transfer to the fluid stream sufficient to cause thermocracking of the fluid. A quench means is provided for discharging a quench liquid so as to be positioned within the thermocracked fluid stream exiting the tube outlet during a cracking operation to immediately lower the temperature of the thermocracked fluid stream sufficient to terminate further thermocracking of the fluid as it emerges from the tube outlet thereby preventing carbon deposition downstream.
摘要:
A process for pretreating residual oil by thermal regenerative vaporizing and pretreatment at short residence times and catalytically cracking the pretreated effluent from the thermal regenerative pretreatment process.
摘要:
A fluid coking process is provided in which a carbonaceous feed (10) is first coked in a dense fluidized bed first coking zone (12) and the effluent of the dense bed is passed as a suspension through a transferline second coking zone (18). A major portion of the solids is separated from the effluent of the upper end of the transferline and passed to a third coking zone (34) which is operated at a higher temperature than the other coking zones and in which the first (12) and second coking zones (18) are positioned.
摘要:
The invention provides a novel process for concurrently carrying out production of reduced iron and thermal cracking of heavy oils in which the reaction of thermal cracking is performed in a fluidized state with the fine iron ore as the fluidized medium and the particles of the iron ore become coated with deposits of the carbonaceous by-product material. The fine iron ore with the carbon deposited thereon is introduced in a fluidized-bed reducing furnace and there reduced into reduced iron by contacting with a reducing gas which is produced in a gas reformer from the cracked gas or the residual oil separated from the products of the thermal cracking. In an improvement of the above process, the gas reformer is operated as a fluidized-bed reactor with the reduced iron as the fluidized medium and acting as the reforming catalyst. The reduced iron partially re-oxidized in the reforming reaction is again reduced to completely reduced iron either by recycling into the fluidized-bed reducing furnace or by introducing into a second fluidized-bed reducing furnace.