Temperature control for hydrogenation reactions
AssigneeLummus Crest, Inc.
InventorsMario Baldasarri, William R. Adams, John Caspers
Life of this patent
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Abstract
Temperature is controlled in a hydrogenation reactor without changing the flow rate of feed into the reactor to maintain a pre-determined temperature in the reactor. In one embodiment, the firing rate of a fuel fired furnace for heating feed to the reactor is controlled in response to the temperature sensed in the reactor to maintain a pre-determined temperature. In another embodiment, the flow rate of a quenching stream for cooling feed to the reactor is controlled in response to temperature sensed in the reactor to maintain a pre-determined temperature in the reactor.
Claims15
A process for hydrogenating a feed in a reactor, comprising:
- heating at least one of a feed to the reactor or a gas containing hydrogen in a fuel fired furnace prior to introduction into the reactor;
- sensing the temperature at different height levels in the reactor;
- and controlling the flow rate of fuel to the fuel fired furnace in response to an average temperature in the reactor as determined from the temperatures sensed at different levels in the reactor to maintain a pre-set temperature in the reactor.
In a process for hydrogenating an effluent from a previous hydrogenation reactor in a subsequent hydrogenation reactor, the improvement comprising:
- quenching the effluent from the previous hydrogenation reactor with at least one quench stream, prior to introduction into the subsequent hydrogenation reactor;
- sensing the temperature at different height levels in the subsequent reactor;
- and controlling the flow rate of at least one quench stream in response to an average temperature in the subsequent reactor as determined from temperatures sensed at different levels in the subsequent reactor to maintain a pre-set temperature in the subsequent reactor.
Dependencies are inferred from the claim text.