Abstract:
Described herein are systems and methods for evaluating and mitigating the fouling potential of a given crude oil. The system and methods enable the refiner to rapidly and readily identify the particular mechanisms by which a crude oil may foul, and to select the optimal chemical treatment and/or crude blend to mitigate fouling potential.
Abstract:
System for safe on-line pigging of a tube coil (103) in a furnace (102) in a delayed coking system (116, 117) and which also permits on-line spalling operations.
Abstract:
An apparatus has a surface exposable to a byproduct carbonaceous material formation environment and comprising a perovskite material having an ABO 3 perovskite structure and being of formula A a B b 0 3-δ , wherein 0.9
Abstract:
A composition useful in methods and apparatuses for inhibiting the buid-up byproduct carbonaceous material includes a perovskite material or a precursor therefor; and a yttrium doped ceria or a precursor therefor.
Abstract:
One exemplary embodiment can be a process for treating a hydroprocessing fraction. The process can include obtaining a bottom stream from a fractionation zone, and passing at least a portion of the bottom stream to a film generating evaporator zone for separating a first stream containing less heavy polynuclear aromatic compounds than a second stream.
Abstract:
One exemplary embodiment can be a process for treating a hydroprocessing fraction. The process can include obtaining a bottom stream from a fractionation zone, and passing at least a portion of the bottom stream to a film generating evaporator zone for separating a first stream containing less heavy polynuclear aromatic compounds than a second stream.
Abstract:
Methods and apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing the pyrolysis oil stream and providing the hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are introduced into a reaction zone. Deposits form adjacent to a pyrolysis oil outlet of the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of a particulate cracking catalyst in the reaction zone. During catalytic cracking, the pyrolysis oil deposits adjacent the pyrolysis oil outlet of the pyrolysis oil stream are removed, such as with a cleaning head.
Abstract:
The present disclosure provides for processes including a coke catcher that may be emptied during normal operation or steam standby, thereby overcoming the deficiencies in the prior design as discussed above, the coke catchers and process flows disclosed herein protecting the secondary transfer line exchanger from foulant while not limiting the time between heater cold shutdowns. The designs consider the impact of decoking options, such as when decoking to a firebox as opposed to a decoking drum. Further, flow and cost considerations are addressed in various embodiments; for example, decoke valves are fairly expensive, and process flows disclosed herein may provide for relocation of the decoke valve to facilitate coke catcher operations while not adding an expensive valve to the overall operating flow scheme.