Material flow direction of hydrogenation reactor
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Does the light hydrocarbon material in the hydrogenation reactor flow from top to bottom or from the lower phase to top? When the catalyst is activated, does air flow up from the lower phase or down from the upper phase?
The flow direction of materials is from top to bottom, and the same is true during activation. However, depending on the catalyst, some use wet activation, some use dry activation, and some require the introduction of hydrogen.
Materials and hydrogen flow from bottom to top
Materials flow from bottom to top. Depending on the catalyst, hydrogen generally flows from bottom to top during hydrogenation.
The intermittent hydrogenation reactor uses composite propeller stirring, and the hydrogen moves from top to bottom.； Material moves from bottom to top!
The hydrogenation reactor is a fixed-bed reactor, and the material flow direction is from top to bottom. The flow direction during catalyst activation is the same as that during normal production reaction. The resistance overcome in this way is relatively small in all aspects. If it flows from bottom to top, when the liquid phase fills the reactor, the resistance will be very large when hydrogen is passed in, making production impossible. It seems that only catalytic cracking material flows from bottom to top in the reactor, but its products are in the gas phase.
The hydrogenation reactor is a fixed-bed reactor, and the material flow direction is from top to bottom. The flow direction during catalyst activation is the same as that during normal production reaction. The resistance overcome in this way is relatively small in all aspects. If it flows from bottom to top, when the liquid phase fills the reactor, the resistance will be very large when hydrogen is passed in, making production impossible. It seems that only catalytic cracking material flows from bottom to top in the reactor, but its products are in the gas phase.
The flow direction of materials is from top to bottom, and the same is true for hydrogen. Since hydrogenation is a fixed-bed reactor, the flow direction of residual oil is from bottom to top.
Hydrogenation reactors are divided into upflow and downflow types, depending on the gas-liquid ratio of the reactor inlet feed. Usually, most hydrogenation processes use downflow reactors. Reactors for hydrogenation and deep dearomatization are available in the upflow type. The air flow direction during catalyst regeneration is the same as during production. Processes cannot be changed.
Residual ebullating bed hydrogenation and suspended bed hydrogenation use upflow reactors.
The hydrogen flow direction of the fluidized bed hydrogenation reactor is from top to bottom.