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A kind of reforming catalyst and preparation method thereof

A technology for reforming catalysts and compounds, which can be used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. The effect of charcoal

Active Publication Date: 2021-11-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The main purpose of the present invention is to provide a reforming catalyst and a preparation method thereof, so as to overcome the problem of easily generating coke and carbon deposition caused by catalytic reforming side reactions in the prior art

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  • A kind of reforming catalyst and preparation method thereof
  • A kind of reforming catalyst and preparation method thereof

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preparation example Construction

[0035] The present invention provides a kind of preparation method of reforming catalyst, and this preparation method comprises the following steps:

[0036] Step 1, preparing a tin-containing alumina carrier;

[0037] Step 2, impregnating the carrier of step 1, the impregnating solution includes platinum-containing compounds, light rare earth compounds, competing adsorbents and ammonium salts; and

[0038] Step 3, drying, activating and reducing the carrier impregnated in step 2 to obtain a reforming catalyst;

[0039] Wherein, based on the total mass of the alumina carrier on a dry basis, the reforming catalyst includes 0.1-0.4 mass % of platinum, 0.1-0.6 mass % of tin, 0.01-1 mass % of light rare earth and 0.3-3.0 mass % of chlorine .

[0040] In the present invention, the steps of preparing the tin-containing alumina carrier are not particularly limited, as long as the requirements of the present invention can be met. The shape of the alumina carrier can be strip-shaped...

Embodiment 1

[0057] Take 100 grams of pseudo-boehmite (manufactured by Sasol) and an appropriate amount of deionized water with a liquid / solid mass ratio of 2, and stir at room temperature for 0.5 hour slurrying. Then add 3 milliliters of nitric acid, and a predetermined amount of stannous chloride hydrochloric acid solution, so that the Sn content in the solution is 0.30% by mass relative to the alumina on a dry basis, and acidify for 2 hours. Then drop the ball into the oily ammonia column, solidify the wet ball in ammonia water for 1 hour, then filter, wash with deionized water three times, dry at 60°C for 6 hours, dry at 120°C for 2 hours, and bake at 650°C for 4 hours in a flowing air atmosphere. Hours, the Sn-containing alumina pellet carrier was obtained.

[0058] Prepare an impregnating solution containing chloroplatinic acid, cerous chloride, hydrochloric acid, and ammonium chloride according to a predetermined amount, and the content of platinum, cerium, HCl and ammonium salt in ...

Embodiment 2

[0060] Catalyst B is prepared according to the method of Example 1, except that the light rare earth compound is praseodymium chloride in the impregnation solution, and the specific steps are as follows:

[0061] Take 100 grams of pseudo-boehmite (manufactured by Sasol) and an appropriate amount of deionized water with a liquid / solid mass ratio of 2, and stir at room temperature for 0.5 hour slurrying. Then add 3 milliliters of nitric acid, and a predetermined amount of stannous chloride hydrochloric acid solution, so that the Sn content in the solution is 0.30% by mass relative to the alumina on a dry basis, and acidify for 2 hours. Then drop the ball into the oily ammonia column, solidify the wet ball in ammonia water for 1 hour, then filter, wash with deionized water three times, dry at 60°C for 6 hours, dry at 120°C for 2 hours, and bake at 650°C for 4 hours in a flowing air atmosphere. Hours, the Sn-containing alumina pellet carrier was obtained.

[0062]An impregnating ...

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Abstract

The invention provides a reforming catalyst and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a tin-containing alumina carrier; step 2, impregnating the carrier in step 1, wherein the impregnating solution includes a platinum compound, a light Rare earth compound, competing adsorbent and ammonium salt; and step 3, drying, activating, and reducing the carrier impregnated in step 2 to obtain a reforming catalyst; wherein, based on the total mass of the dry-based alumina carrier, the reforming catalyst includes 0.1-0.4 mass % of platinum, 0.1-0.6 mass % of tin, 0.01-1 mass % of light rare earth and 0.3-3.0 mass % of chlorine. The catalyst of the invention is used for catalytic reforming reaction of hydrocarbons, has few hydrogenolysis products and cracking products, and has high selectivity of aromatic hydrocarbons and isoparaffins.

Description

technical field [0001] The invention is a reforming catalyst and its preparation method, in particular, a light rare earth-containing reforming catalyst and its preparation method. Background technique [0002] Catalytic reforming is one of the important production processes in petroleum processing, and its main purpose is to produce high-octane gasoline, BTX aromatics and cheap hydrogen. With the upgrading of gasoline and diesel quality and the rapid development of hydrogenation technology, catalytic reforming plays an increasingly important role in the refining and chemical industry. At present, the most commonly used reforming catalyst in industry is Pt-Re / Al for semi-regenerative reforming process 2 o 3 Catalyst and Pt-Sn / Al for Continuous Regenerative Reforming Process 2 o 3 . [0003] At present, the development trend of the reforming process is to develop in a thermodynamically favorable direction, that is, to reduce the reaction pressure, increase the reaction t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135B01J37/02B01J37/08B01J37/18C10G35/09
CPCB01J27/135B01J37/0207B01J37/08B01J37/18C10G35/09B01J35/393B01J35/23
Inventor 潘晖华韩晓琳胡长禄龚奇菡崔佳
Owner PETROCHINA CO LTD
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