Gasoline desulfurization adsorbent and preparation and application thereof

An adsorbent and gasoline technology, which is applied in the field of gasoline desulfurization adsorbent and its preparation and application, can solve the problems of low adsorption selectivity and adsorption capacity, harsh operating conditions and high operating cost, and achieves low production cost, low operating cost and raw material. easy-to-get effect
CN102407094AActive Publication Date: 2012-04-11PETROCHINA CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2012-04-11

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Abstract

The invention relates to a gasoline desulfurization adsorbent and preparation and application thereof. A preparation method of the gasoline desulfurization adsorbent comprises the following steps of: mixing a zinc salt, a VIII family non-precious metal salt, other salts and a precipitant in a proton-containing polar solvent, and undergoing a precipitation reaction at the temperature ranging from the room temperature to 15 DEG C to obtain a sulfur storing agent; and soaking a soluble salt containing a VIB and / or VIII family transition metal into a molecular sieve carrier containing gamma-Al2O3to obtain an octane number restorative, wherein the gasoline desulfurization adsorbent comprises 5-50 percent by mass of molecular sieve, 5-80 percent by mass of zinc oxide, 1-30 percent by mass of VIB and / or VIII family non-precious metal and 5-50 percent of other bonding agents; the sulfur storing agent and the octane number restorative can be combined for using by mixing, soaking, performing deposition sedimentation and co-precipitating, and can be used separately; and the absorbent can be used for adsorbing almost all sulfides in gasoline to obtain ultra-low-sulfur even sulfur-free gasoline while the octane number is kept to be constant or be increased slightly.
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Description

technical field

[0001] The invention relates to a gasoline ultra-deep desulfurization adsorbent and its preparation and application. Background technique

[0002] IRVAD developed by Black & Veatch Pritchard, Inc. and Alco Industrial Chemicals (USP5730860) TM The process adopts a brand-new desulfurization idea. They apply the concept of selective adsorption to gasoline ultra-deep desulfurization. The whole operation process does not consume hydrogen, and there is no loss of octane number. It can desulfurize catalytic (FCC) gasoline or coker gasoline with a sulfur content of 1276ppm to below 120ppm. However, the adsorption capacity of the desulfurization adsorbent used in this process is low, so the regeneration is frequent, which limits the industrial application of this technology.

[0003] The S-Zorb process (USP: 6531053, 6346190, 6056871, 6184176, 6254766, etc.) developed by Conoco Phillips Petroleum Company can desulfurize FCC gasoline with a sulfur content of 775ppm...

Claims

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