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Three-metal reforming catalyst, preparation method and application

A technology for reforming catalysts and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, naphtha catalytic reforming, etc. Poor problems, achieve good industrial application prospects, reduce production costs, and good catalytic activity

Pending Publication Date: 2016-03-30
BEIJING ENERGY ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, platinum is an expensive metal, and tests have shown that in Pt-Re catalysts, when the Pt content is lower than 0.17% by weight, the catalytic performance of the catalyst will be significantly worse
And because the platinum content cannot be too low, and the introduction of various high-purity additive metal components increases the manufacturing cost of the catalyst, which causes the price of the reforming catalyst to remain high

Method used

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  • Three-metal reforming catalyst, preparation method and application
  • Three-metal reforming catalyst, preparation method and application
  • Three-metal reforming catalyst, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0052] Preparation example 1 of this carrier is to use HP dry rubber powder as raw material to prepare strip-shaped γ-Al 2 o 3 carrier

[0053] Get 500 grams of HP dry rubber powder (produced by Nanjing Catalyst Factory) and dry mix evenly with 14 grams of Tianqing powder, use 360 ​​milliliters of deionized water, 12 milliliters of concentrations are 68 weight percent nitric acid (AR grade), 14 milliliters of concentrations are 32 weight percent % of acetic acid (AR grade), 15 grams of citric acid (AR grade) mixed solution, added to the HP dry rubber powder mixed with Tianqing powder, wet mixed, rolled, and then extruded with a cylindrical orifice plate with a diameter of Φ1.6mm Molding, curing at 30-60°C for 16 hours, drying at 120°C for 8 hours, cutting to a length of 3-8mm, and roasting at 630°C for 6 hours to obtain strip-shaped γ-Al 2 o 3 Carrier (referred to as HP-γ-Al 2 o 3 ).

preparation example 2

[0055] Prepare the carrier according to the method of carrier preparation example 1, the difference is that the raw material used is SB dry rubber powder (produced by German Condea company), and the strip-shaped γ-Al 2 o 3 Carrier (referred to as SB-γ-Al 2 o 3 ).

[0056] Wherein, the analytical data of the alumina carriers of carrier preparation example 1 and carrier preparation example 2 are shown in Table 1.

[0057] Catalyst preparation example 1

[0058] Be that 0.0075 gram Pt / ml chloroplatinic acid solution 13.4 milliliters, solid palladium chloride 0.504 gram, concentration be 0.0165 gram Re / milliliter perrhenic acid solution 12.2 milliliters, 1:1 (HCl:H at concentration 2 (volume ratio of O) concentration of dilute hydrochloric acid 8.5 milliliters, 140 milliliters of deionized water preparations in the solution to be impregnated, drop into the gamma-Al that 100 gram embodiment 1 prepares 2 o 3 The carrier (volume ratio of liquid to solid is 1.2:1), after impreg...

preparation example 2-5

[0060] Catalysts are prepared according to the method of catalyst preparation example 1, the difference is that different predetermined amounts of chloroplatinic acid, palladium chloride, perrhenic acid and the same amount of hydrochloric acid, deionized water are used to prepare impregnation solutions to prepare different Pt, Pd, Re Catalyst B, C, D, E of the molar ratio of content, composition sees Table 2.

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PUM

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Abstract

The invention provides a three-metal reforming catalyst, and a preparation method and application thereof. The catalyst comprises a carrier, and metal compositions and a halogen supported by the carrier, and the metal compositions comprise Pt, Pd and Re with the molar ratio of 1:(0.9-5):(1.1-2.1). The catalyst is low in platinum content, and the production cost of the catalyst is substantially reduced. Also, the catalyst possesses good catalytic activity, selectivity, activity stability and carbon-deposition resistance, and possesses extremely good industrial application prospect.

Description

technical field [0001] The present invention relates to a three-metal reforming catalyst, a method for preparing the three-metal reforming catalyst and the application of the three-metal reforming catalyst in catalytic reforming, in particular to a catalyst loaded on a carrier Trimetallic reforming catalyst containing platinum palladium rhenium and its preparation method and application. Background technique [0002] Catalytic reforming is an important process for the production of high-octane gasoline components and aromatics from naphtha fractions, and the by-product hydrogen is also used as the main source of hydrogen for hydrogen processing units. As society's demand for reformed products and hydrogen continues to rise, people continue to improve reforming processes and catalysts. [0003] In recent years, the production capacity of catalytic reforming units in the world has increased rapidly, among which continuous reforming technology has been widely used due to its l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/13C10G35/09
Inventor 曲良龙孙作霖轩丽伟
Owner BEIJING ENERGY ENG TECH
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