Method and apparatus of adsorbing desulfurization of catalytically cracked gasoline
A technology for catalytic cracking gasoline and adsorption desulfurization, which is applied in the field of production equipment and catalytic cracking gasoline adsorption desulfurization, which can solve the problems of increased catalyst cost and shortened catalyst life, and achieves the effects of simple structure, high production efficiency and wide selection range
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Embodiment 1
[0060] Such as figure 2 Shown is a process schematic diagram of the countercurrent contact between the reactant and the catalyst.
[0061] Catalytic cracking gasoline raw material 1 and hydrogen 7 are heated to 200-600°C by heating device 9 and then enter from the bottom of axial moving bed reactor 3, and the adsorption desulfurization catalyst regenerated and reduced in moving bed regeneration system 2 is lifted through pipeline 4 To the top of the reactor 3 and enter the reactor, the catalyst is controlled to move downward at a speed of 0.02 to 1.00m / hr (preferably 0.05 to 0.50m / hr) in the reactor 3, and the catalyst that enters from the bottom and flows upward Catalytic cracking gasoline raw material 1 and hydrogen 7 are contacted in countercurrent to generate adsorption desulfurization reaction, the reaction temperature is controlled at 120-600°C (preferably 350-480°C), and the reaction pressure is 0.4-7.2MPa (preferably 1.0-3.5MPa), Weight hourly space velocity 0.1~100h...
Embodiment 2
[0064] Such as image 3 Shown is a process schematic diagram of the downstream contact between the reactant and the catalyst.
[0065] After the adsorption desulfurization catalyst is regenerated and reduced in the moving bed regeneration system 2, the regenerated and reduced adsorption desulfurization catalyst is lifted from the bottom of the regeneration system 2 through the pipeline 4 to the top of the axial moving bed reactor 3. At the same time, the catalytic The cracked gasoline raw material 1 and the hydrogen gas 7 are heated to 200-600°C by the heating device 9, and then enter from the top of the reactor 3, so that the catalytic cracked gasoline raw material and the catalyst are in downstream contact with the reactor, and the adsorption desulfurization reaction occurs simultaneously, and the catalyst is controlled in the reactor. In 3, move downward at a speed of 0.02~1.00m / hr (the preferred value is 0.05~0.50m / hr), control the reaction temperature at 120~600°C (the pr...
Embodiment 3
[0068] Such as Figure 4 Shown is a schematic diagram of the cross-flow contact between the reactant and the catalyst.
[0069] In the figure, the radially moving bed reactor 3 is cylindrical, and a center pipe 32, an inner annular gap cylinder and an outer annular gap cylinder are arranged radially outward from its central axis, and the inner annular gap formed between the inner annular gap cylinder and the central pipe The annulus 33 is a catalyst passage as a fluidized bed of catalyst, which communicates with the catalyst inlet, and the outer annulus 31 formed between the outer annulus cylinder and the inner annulus cylinder is a reactant passage communicated with the reactant inlet, and the center pipe 32 is The product channel communicates with the product outlet, and the inner and outer cylinder walls serving as the inner ring space 33 of the catalyst moving bed are provided with sieve holes 34 through which reactants and products can pass.
[0070] FCC gasoline 1 and h...
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