Gasoline desulfurization method
A technology for gasoline and light gasoline, which is applied in the field of gasoline desulfurization and can solve problems such as gasoline octane loss
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[0048] 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.
[0049] According to the present invention, etherification treatment refers to the C 5 The following low-carbon hydrocarbons (such as isopentene and cyclopentene) are etherified with alcohols to generate high-octane etherified oils. For example, the etherification treatment step may include: The second light gasoline fraction and the second desulfurization product are contacted with alcohols, so that the olefins in the second light gasoline frac...
Embodiment 1
[0059] The gasoline fraction used in Example 1 is refinery stable gasoline A, and its properties are listed in Table 1. Such as figure 1As shown, the stable gasoline A is distilled in the gasoline raw material cutting tower 1, cut into the first light gasoline fraction and the first gasoline heavy fraction, and the final boiling point of the first light gasoline fraction is controlled to be 65-70 ° C (according to ASTM D86 standard conduct). Wherein, the first light gasoline fraction obtained by the distillation of stable gasoline A is denoted as LCN-A-1, and the first heavy gasoline fraction is denoted as HCN-A-1, and the properties are listed in Table 2; the first heavy gasoline fraction HCN-A- 1 into the first set of fluidized reactor 4 to contact with the desulfurization catalyst FCAS and carry out the first desulfurization reaction in the state of hydrogen, the reaction conditions are listed in Table 4, the reaction product obtained from the top of the reactor is cooled ...
Embodiment 2
[0061] The operation of Example 2 is basically the same as that of Example 1, except that the temperature of the second desulfurization reaction is controlled to be 410° C. to obtain a gasoline product, whose properties are shown in Table 5.
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