Controlling temperature within a catalyst bed in a reactor vessel
OwnerJeffrey N. Dailyinventor
Life of this patent
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Abstract
A quenching medium is delivered directly to selected regions or locations within a catalyst bed in a hydroprocessing reactor vessel in order to control the reactivity of a hydroprocess occurring in the selected regions or locations separately from other regions or locations. Temperature sensors for providing temperature indications and conduits for delivering the quench medium are distributed throughout the catalyst bed. One or more conduits can be selected for delivery of the quenching medium to selected regions or locations so that separate control of the level of reactivity in each of various regions or locations throughout the bed can be achieved.
Claims20
A method of controlling temperature within a catalyst bed in a hydroprocessing reactor vessel, comprising:
- observing temperature within a catalyst bed disposed within a reactor vessel while reacting a hydrocarbon feed within the catalyst bed;
- and
- based on the observed temperature, selectively delivering a quench medium to a first region within the catalyst bed through a first conduit delivery port embedded within the catalyst in the first region of the catalyst bed separately from delivering the quench medium to a second region within the catalyst bed through a second conduit delivery port embedded within the catalyst in the second region of the catalyst bed to separately control a level of reactivity in each of the first and second regions.
A method, comprising:
- observing temperature within a catalyst bed in which a first multipoint thermocouple device is deployed while reaction of a hydrocarbon is occurring in the catalyst bed, the first multipoint thermocouple device having a longitudinal sheath containing a plurality of first junction points to provide respective indications of temperature within the catalyst bed;
- based at least in part on the temperature indications, controlling separate delivery of a quench medium to each of a plurality of regions within the catalyst bed to control reactivity of the hydrocarbon reaction within each region separately from the other regions,
- wherein a delivery port of each of a plurality of quench conduits for transporting the quench medium is embedded within the catalyst in a corresponding region of the plurality of regions of the catalyst bed, and wherein controlling separate delivery of the quench medium comprises selectively enabling each of the quench conduits to deliver the quench medium to its corresponding region through its corresponding delivery port.
A system, comprising:
- a first multipoint thermocouple deployed within a reactor vessel to observe temperature within a catalyst bed while a hydrocarbon reaction is occurring, the first multipoint thermocouple having a plurality of first sensing points to provide indications of the temperature at corresponding first unique locations within the catalyst bed;
- a first conduit having a first delivery port disposed within the catalyst of a first region of the catalyst bed to deliver a quenching medium directly within the first region;
- and
- a control system, responsive to the temperature indications, to control delivery of the quenching medium through the first delivery port of the first conduit to the first region to control reactivity of the hydrocarbon reaction throughout the catalyst bed in a desired manner.
Dependencies are inferred from the claim text.