Two-stage catalytic gasoline upgrading method for increasing gasoline yield and producing ultra-low sulfur gasoline
A technology for catalytic gasoline and catalytic cracking gasoline, which is applied in the fields of hydrocarbon oil treatment products, petroleum industry, and hydrocarbon oil treatment. It can solve the problems of large gasoline yield loss and achieve small octane loss and no loss of gasoline yield or increased effect
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Embodiment 1~4
[0036] The composition of the raw oil is a mixture of 85% by volume of full-cut FCC gasoline and 15% by volume of C4 liquefied gas. Fill the alkylation section with 5mL nanometer Hβ-γ-Al 2 o 3 Catalyst, obtained by modifying the catalyst with 0.5mol / L citric acid in a water bath at 85°C for 3 hours, filled with 5mL Co-Mo / ZSM-5-MCM-41 in the fixed bed of the hydrodesulfurization / aromatization section, and the carrier ZSM-5 / MCM The mass ratio of ZSM-5 to MCM-41 in -41 composite molecular sieve is 7:3, the active components CoO, MoO 3 The loading amounts were 2.0% and 5.0% of the carrier mass, respectively. The reaction conditions in the alkylation section are bed temperature 90°C, hydrogen to oil volume ratio 10, system pressure 1.5MPa, liquid hourly space velocity 2h -1 ;The reaction conditions of hydrodesulfurization / aromatization section are hydrogen oil volume ratio 300, system pressure 1.5MPa, liquid hourly space velocity 2h -1 , and the bed temperatures were 410°C, 390...
Embodiment 5
[0041] Change the hydrogen oil volume ratio in the hydrodesulfurization / aromatization section to 240, and other conditions and parameters are the same as in Example 1 to obtain oil sample 5.
Embodiment 6
[0043] Change the hydrogen oil volume ratio in the hydrodesulfurization / aromatization section to 360, and other conditions and parameters are the same as in Example 1 to obtain oil sample 6.
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