摘要:
Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.
摘要:
Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.
摘要:
Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.
摘要:
Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.
摘要:
A novel multiple stage separator (MSS) vessel is disclosed wherein the vessel includes at least first and second stages or decks of separation cyclones, the stages arranged for operation in series. Each stage or deck includes an upper and lower tube sheet on which a plurality of cyclones are installed, solid particles in the gas stream being separated from the stream and dispensed between the tube sheets as the stream passes through each stage. The vessel has an inlet to receive a gas stream containing the particulates, and the flow travels typically downwardly, first passing through the first stage, then passing through at least a second stage. When implemented downstream of a fluid catalytic cracking (FCC) unit, the MSS has been found to remove a surprisingly increased amount of particulates over a conventional third stage separator (TSS), which contains a single stage separator.
摘要:
A system for distributing particulate material into a particulate vessel includes a particulate material distributor for introducing the particulate material into the particulate vessel. The particulate material distributor includes a declined header that defines a plurality of orifices that are spaced along a length of the declined header for accommodating flow of particulate material from the declined header. The system also includes a vessel level controller for controlling a level of the particulate material in the particulate vessel. The vessel level controller controls flow of the particulate material through one or more of the orifices in the declined header through adjustment of the level of particulate material in the particulate vessel between the plurality of orifices in the declined header. A FCC unit including the system is also provided, along with a method for distributing particulate material into a particulate vessel using the system.
摘要:
One exemplary embodiment can be a process for fluid catalytic cracking The process can include providing a mixture of a fuel gas and at least one of steam and nitrogen to a catalyst stripping zone of a reaction zone. Usually, the fuel gas is added in an amount effective to add heat duty to a regeneration zone for a catalyst of the reaction zone.
摘要:
The present invention is directed to the in vivo use of compounds which prevent the generation of, effectively scavenge, or detoxify a reactive oxygen metabolite that mediates a toxic effect of rhabdomyolysis and myoglobinuria. The compounds of the invention can be used to prevent or reduce rhabdomyolysis-induced renal damage, and include but are not limited to free radical scavengers, iron chelators, oxidizable compounds, enzymes which metabolize reactive oxygen metabolites or their precursors, and biosynthetic precursors thereof.
摘要:
One exemplary embodiment may be a process for fluid catalytic cracking. The process can include providing a stream through a plurality of distributors to a riser terminating in a reaction vessel. Often, the plurality of distributors includes a first distributor set having at least two distributors positioned around a perimeter of the riser, a second distributor set having at least two distributors positioned around the perimeter of the riser, and a third distributor set having at least two distributors positioned around the perimeter of the riser.
摘要:
One exemplary embodiment may be a process for fluid catalytic cracking. The process can include providing a stream through a plurality of distributors to a riser terminating in a reaction vessel. Often, the plurality of distributors includes a first distributor set having at least two distributors positioned around a perimeter of the riser, a second distributor set having at least two distributors positioned around the perimeter of the riser, and a third distributor set having at least two distributors positioned around the perimeter of the riser.