Process for preparing poly metal reforming catalyst

A reforming catalyst and catalyst technology, applied in the catalytic reforming of naphtha, etc., can solve the problems of rare earth metal loss, reduced catalytic effect, and low rare earth metal content, and achieve the effect of uniform distribution and preventing loss

Active Publication Date: 2006-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to evenly distribute the VIII metals in the carrier, it is often necessary to add a competitive adsorbent to the impregnation solution containing the VIII metals, and the competitive adsorbent is an acidic compound, and its acidity can easily cause the loss of rare earth metals, resulting in the loss of rare earth metals in the catalyst. The content is less than the predetermined amount, and the catalytic effect is reduced

Method used

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  • Process for preparing poly metal reforming catalyst
  • Process for preparing poly metal reforming catalyst

Examples

Experimental program
Comparison scheme
Effect test

example 1～4

[0037] (1) Preparation of tin-containing alumina carrier

[0038] Prepare the carrier according to the method of example 1 in CN1150169A, get 100 grams of SB aluminum hydroxide powder (Germany, produced by Condea company) and an appropriate amount of deionized water, make the liquid / solid mass ratio 2.0, stir to make it slurry. Add the nitric acid that volume ratio is 1: 1, and its addition is 7.5 milliliters / 100 gram SB powders, adds the tin chloride of 30 gram urea and predetermined amount simultaneously, and the content of Sn is 0.30 mass % (calculated with dry basis alumina Standard, hereinafter the same), stirred for 1 hour, then added 30 grams of kerosene and 3 grams of fatty alcohol polyoxyethylene ether and stirred for 1 hour, then dropped the ball into the oily ammonia column for molding. The wet bulb is solidified in ammonia water for 1 hour, then filtered, rinsed with deionized water for 2 to 3 times, dried at 60°C for 6 hours, dried at 120°C for 10 hours, and calci...

example 5

[0049] Prepare the aluminum oxide carrier SC that contains tin and cerium by the method for example 1 (1), difference is when adding urea, replace tin chloride with tin chloride and cerium chloride, control the content of Sn to be 0.30 quality %, The content of cerium was 0.2% by mass. The carrier SC contains 0.3% by mass of Sn and 0.2% by mass of Ce.

[0050] Get 100 grams of carrier SC, impregnate with a solution containing 180 milliliters of diethylamine, HCl and chloroplatinic acid, the content of HCl in the impregnating solution is 2.5 mass %, and the platinum content is 0.30 mass % (both based on dry base alumina ), the ratio of the amount of diethylamine to HCl is 0.2, the soaking time is 24 hours, the mother liquor is separated from the solid with an acid-resistant filter funnel, the solid is dried at 120 ° C for 5 hours, and the solid is dried at 510 ° C in H 2 The O / HCl molecular ratio is 40: 1 water chlorine activation treatment in the air for 3 hours, the active c...

example 6

[0052] Catalyst PSR-8 was prepared according to the method of Example 5, except that the ratio of the amount of diethylamine to HCl in the impregnation solution was 0.4. The content of active components of PSR-8 is shown in Table 2. It can be seen from Table 2 that the rare earth Ce no longer dissolves during the impregnation process, and the platinum content in the catalyst decreases slightly.

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Abstract

The polymetal catalyst for reforming includes high temperature inorganic oxide carrier and the active components, including VIII metal in 0.01-2.0 wt% of the carrier, IVA metal in 0.01-5.0 wt% of the carrier, RE metal in 0.01-2.0 wt% of the carrier and halogen in 0.1-10.0 wt% of the carrier. The preparation process of the catalyst includes first introducing IVA metal and RE metal into the high temperature inorganic oxide carrier, the subsequent soaking of the carrier inside the soaking liquid comprising water soluble compound of VIII metal, monobasic acid and organic amine, and final drying and roasting of the soaked solid. The said preparation process can avoid the loss of RE metal in soaking VIII metal to raise the activity stability of the catalyst.

Description

technical field [0001] The invention is a method for preparing a multi-metal reforming catalyst, in particular, a method for preparing a multi-metal reforming catalyst by impregnation. Background technique [0002] Catalytic reforming is one of the important petroleum processing processes to produce high-octane gasoline, aromatics and cheap hydrogen. The reforming catalyst must have both the acidic function of isomerization and the function of hydrogenation-dehydrogenation. The acidic function of the catalyst is generally provided by porous acidic inorganic oxide supports, such as alumina and halogens, and the hydrogenation-dehydrogenation function is provided by Group VIII metal components. In addition, the commonly used metal promoters Sn or Re in catalysts mainly modify the above two functions. 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 Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/06
Inventor 潘锦程马爱增王国成
Owner CHINA PETROLEUM & CHEM CORP
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