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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

Active Publication Date: 2012-04-11
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, in the existing literature or patents, there are still some shortcomings in the research of adsorption ultra-deep desulfurization: 1. The adsorption selectivity and adsorption capacity of the adsorbent for sulfide are low; 2. In the hydrogenation reaction During adsorption, the octane number loss caused by the saturation of olefins and aromatics exceeds 1 unit; 3. The operating conditions are harsh, with high hydrogen consumption, high energy consumption, and high operating costs

Method used

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  • Gasoline desulfurization adsorbent and preparation and application thereof
  • Gasoline desulfurization adsorbent and preparation and application thereof
  • Gasoline desulfurization adsorbent and preparation and application thereof

Examples

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Effect test

Embodiment 1

[0018] Preparation of desulfurization adsorbent in the present invention.

[0019] As an illustrative example, the sulfur storage agent is prepared as follows: Weigh 3.20 g of nickel nitrate hexahydrate, 3.20 g of aluminum nitrate hexahydrate, and 7.35 g of zinc nitrate hexahydrate and dissolve them in 200 ml of distilled water, add 8.10 g of urea and stir fully at 90°C for 24 hours to make The precipitating agent was completely hydrolyzed, filtered and washed with deionized water to obtain a wet filter cake, which was then vacuum-dried to obtain a green solid, which was calcined at 500°C for 4 hours, and the sample number was A.

Embodiment 2

[0021] The preparation of octane recovery agent in the present invention.

[0022] As an illustrative example, the octane recovery agent is prepared as follows: weigh 32.5g Hβ, 17.5g pseudo-boehmite, grind and mix them evenly, add 1mL 63% concentrated HNO 3 and 37mL of distilled water, and grind into a moderately suitable powder cake. Extrude on a extruder into rods with a diameter of 2 mm. After air drying at room temperature, it was dried at 120° C. for 10 hours, and calcined at 500° C. for 4 hours to prepare a catalyst carrier. Weigh 0.8227 g of ammonium molybdate and add 4 mL of distilled water to dissolve it, and add 3 mL of distilled water containing 0.5 mL of 85% phosphoric acid into the ammonium molybdate solution. Add 10 grams of catalyst carrier into the above mixed solution, soak for 24 hours, dry at 120°C for 12 hours, and then bake at 500°C for 4 hours. The sample number is B.

Embodiment 3

[0024] The invention prepares the mixed adsorbent containing sulfur storage agent and octane recovery agent.

[0025] Mix the wet filter cake obtained in Example 1 with 2g Hβ and 1g pseudo-boehmite evenly, put it in an oven and dry it at 60°C for 1 hour, then add 3ml of 3% nitric acid aqueous solution and knead it and extrude it; After drying, it was dried at 120° C. and calcined at 500° C. to obtain a calcined sample; and then carried molybdenum and phosphorus on the above calcined sample in the same manner as in Example 2 to obtain catalyst C.

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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.

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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Application Information

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IPC IPC(8): B01J20/18B01J20/30C10G25/00
Inventor 蒋宗轩李灿杨永兴张玉良兰玲鞠雅娜
Owner PETROCHINA CO LTD
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