A kind of processing method of gasoline
A processing method and technology for gasoline, which are applied to hydrocarbon oil processing products, processing hydrocarbon oil, and processing with moving solid particles, etc., can solve problems such as the loss of gasoline octane number, improve octane number, reduce investment costs, and reduce gasoline The effect of vapor pressure
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Embodiment approach
[0043] A specific embodiment, based on the dry weight of the adsorption desulfurization catalyst and based on the weight of oxides, the zinc oxide in the adsorption desulfurization catalyst accounts for 10-90% by weight, and the silicon dioxide accounts for 5-85% by weight. %, aluminum oxide accounts for 5-30% by weight; based on the dry basis weight of the adsorption desulfurization catalyst and calculated by element weight, the content of the desulfurization active metal in the adsorption desulfurization catalyst is 5-30% by weight.
[0044] According to the present invention, the adsorption desulfurization catalyst may also contain 1-10% by weight of coke-like substances. Industrial practice shows that the carbon content on the adsorption desulfurization catalyst has an impact on the desulfurization efficiency of the adsorption desulfurization catalyst and the loss of gasoline octane number. With the increase of the carbon content of the adsorption desulfurization catalyst, ...
specific Embodiment approach
[0046] A specific embodiment, the preparation process of the molecular sieve with MFI structure can include ammonia exchange, phosphorus modification, metal component modification and roasting treatment steps, more specifically, the molecular sieve with MFI structure obtained by conventional crystallization The sodium type molecular sieve according to the molecular sieve: ammonia salt: H 2 The weight ratio of O=1:(0.1-1):(5-10) is exchanged at room temperature to 100° C. for 0.3-1 hour and then filtered to introduce phosphorus-containing compounds and compounds selected from Fe, Co, Ni, Zn, Mn, The molecular sieve is modified by one or more compounds of Ga and Sn, and then calcined at 400-800° C. for 0.5-8 hours, wherein the calcining process can also be carried out under a water vapor atmosphere. Furthermore, for the molecular sieve with MFI structure provided by the present invention, the molecular sieve can be modified by impregnation or ion exchange during the preparation ...
Embodiment 1
[0063] Put a fresh aromatization catalyst named OTAZ-C-3 into a dense-phase fluidized bed reactor, and continuously age it for 8 hours at an aging temperature of 780°C and 100% steam to obtain an aged OTAZ-C-3 catalyst , the microreaction activity was 43.
[0064] Stable gasoline raw material A contacts with the mixed catalyst that comprises adsorption desulfurization catalyst FCAS and aged aromatization catalyst OTAZ-C-3 (OTAZ-C-3 accounts for 7% of catalyst gross weight) in small continuous fluidized bed reactor, carries out Adsorptive desulfurization and aromatization reactions. The operating conditions are: the reaction temperature is 400°C, the reactor pressure is 2.1MPa, and the weight hourly space velocity of the gasoline feedstock is 6 hours -1 , the volume ratio of hydrogen to gasoline feedstock is 75. The desulfurization and aromatization products obtained from the top of the reactor are cooled and separated to obtain tail gas and gasoline fractions. The regenerat...
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Abstract
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