Solid acid alkylation reaction method, alkylation reaction device and system
An alkylation reaction and an alkylation reactor technology are applied in the field of solid acid alkylation reaction methods and devices, which can solve the problems of easy deactivation of solid acid catalysts, reduce the frequency and total amount, slow down deactivation, The effect of improving regeneration efficiency
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[0063] Preparation of Alkylation Catalyst B:
[0064] Roll the platinum-supported solid acid obtained after the above-mentioned vacuum low-temperature evaporation into balls while spraying water on the rolling ball forming equipment, and then further dry at 120°C for 4 hours and roast at 550°C for 2 hours to obtain a spherical catalyst with an average diameter of 0.9mm .
[0065] The isoparaffin raw material is mainly isobutane, purchased from Beijing Huayuan Gas Chemical Co., Ltd., and its composition is listed in Table 1.
[0066] The olefin raw material is the carbon four components after the etherification process, which is taken from the MTBE unit of the refinery of Yanshan Branch of Sinopec Co., Ltd., and its composition is listed in Table 1.
Embodiment 1
[0081] The solid acid alkylation unit used is shown in the appendix figure 1 , as attached figure 1 As shown, the alkylation raw material enters the alkylation reactor 2 through the pipeline 1, the alkylation reactor 2 is in the form of a moving bed, and the solid acid catalyst is introduced into the reactor through the pipeline 22, and is mixed with the alkylation reaction material from bottom to top. Countercurrent contact, the apparent flow velocity of the liquid phase material is 0.02m / s, the liquid material and the solid acid catalyst are separated by gravity sedimentation, the separated alkylation product is discharged through the pipeline 3, and the separated solid acid catalyst is passed through The pipeline 4 enters the shallow regeneration unit and the deep regeneration unit respectively, wherein the shallow regeneration unit includes a gas-phase hydrogen regenerator 7 and a regeneration medium flusher 11, and the solid acid catalyst regenerated by gas-phase hydrogen...
Embodiment 2
[0088] Compared with Example 1, the difference of Example 2 is that the flushing fluid is isobutane raw material, the flushing temperature is 145°C, the system operating pressure is 3.8MPa, the isobutane is in a supercritical state, and the volumetric space velocity of the flushing fluid relative to the catalyst is 40h -1 . Other operating conditions are with embodiment 1.
[0089] The operation results of the solid acid catalyst are shown in Table 2, and the properties of the alkylate product after removing components below C4 are shown in Table 3.
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