Naphtha reforming catalyst, and preparation method thereof

A technology of catalyst and naphtha, which is applied in the field of naphtha reforming catalyst and its preparation, can solve problems such as poor regeneration performance, corrosion of free chloride ion equipment, catalyst deactivation, etc. Structured reaction activity and reformed liquid yield, enhanced adsorption effect

Active Publication Date: 2017-02-15
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional catalytic reforming technology is widely used in the processing of crude naphtha, when it is used to process lean naphtha (such as FT naphtha), since lean naphtha is mainly composed of paraffins, and paraffin dehydrogenation Cyclization to aromatics is the slowest reaction on conventional naphtha reforming catalysts, making it difficult to convert to high-octane reformate without significant liquid yield loss, thus sparking criticism based on Pt/Cl - /Al 2 o 3 Research on Alternative Reforming Catalysts of Catalysts
[0006] The existing reforming catalysts mainly have the following problems: ① During the use of the reforming catalyst

Method used

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  • Naphtha reforming catalyst, and preparation method thereof
  • Naphtha reforming catalyst, and preparation method thereof
  • Naphtha reforming catalyst, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1. Two dipping according to method b

[0057] The Pt / KL catalyst was prepared according to the method of the control example. The Pt / KL catalyst was immersed in a glucose solution with a pH of 12 (the pH value was adjusted with potassium hydroxide), and the volume ratio of the glucose solution to the KL molecular sieve was 2.0 After standing for 2 hours, filtered and dried at 120°C, calcined at 350°C for 6 hours to obtain a C / Pt / KL catalyst with 1.0% by weight of C and 0.6% by weight of Pt.

Embodiment 2

[0058] Example 2. Two dipping according to method a

[0059] The KL molecular sieve is immersed in a glucose solution with a pH of 12 (the pH value is adjusted with potassium hydroxide), the volume ratio of the glucose solution to the KL molecular sieve is 2.0, filtered, dried at 120°C for 12 hours, and then roasted at 350°C 6h, get a C / KL sample with 1.0% C weight percentage; then immerse the C / KL sample in a platinum dichlorotetraammine solution with a pH value of 12, with a liquid-to-solid ratio of 2.0, stand for 24h, and filter After drying at 120°C for 12 hours, and calcining at 350°C for 6 hours, a Pt / C / KL catalyst was obtained. The weight percentage of Pt was 0.6% and the weight percentage of C was 1.0%.

Embodiment 3

[0060] Example 3. One time immersion

[0061] The KL molecular sieve was immersed in a mixed solution of platinum dichlorotetraammine and glucose with a pH of 12, left standing for 24 hours, filtered, dried at 120°C for 12 hours, and calcined at 350°C for 6 hours to obtain a PtC / KL catalyst. The weight percentage content of Pt is 0.6%, and the weight percentage content of C is 1.0%.

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Abstract

The invention discloses a naphtha reforming catalyst, and a preparation method thereof. The naphtha reforming catalyst comprises, by mass, 93.0 to 99.9 parts of a carrier, 0.1 to 2.0 parts of a metal, 0 to 5.0 parts of carbon, wherein the mass amount of carbon is higher than 0. According to the preparation method, a certain amount of a monosaccharide is added in preparation process of the Pt-KL reforming catalyst, so that metal Pt dispersion is improved, carbon deposition rate of the catalyst in reaction process is reduced, and Pt-KL catalyst reforming reaction performance is improved; the naphtha reforming catalyst possesses relatively high paraffin aromatization reaction activity and reforming liquid yield; when active metal component Pt is introduced in the preparation method, a dipping liquid is alkaline, pH value is controlled to be 10 to 13, adsorption effect of Pt precursor ion with carrier KL molecular sieve is improved, so that it is beneficial for dispersion of metal Pt.

Description

Technical field [0001] The invention relates to a naphtha reforming catalyst and a preparation method thereof. Background technique [0002] With the rapid growth of my country’s car ownership, the consumption of motor gasoline has also increased substantially. The apparent consumption of motor gasoline has increased from 5.2475×10 in 2006. 7 t surged to 9.365×10 in 2013 7 t. On the other hand, the issue of environmental governance has become a global consensus. The impact of exhaust emissions on air pollution is increasing. The quality of oil is an important factor affecting exhaust emissions. The upgrading of refined oil quality is bound to become a long-term issue for the global oil refining industry. The development trend and accelerating the upgrading of oil quality is an important means to reduce exhaust emissions and prevent haze weather. [0003] At present, the quality of motor gasoline produced in China is still far behind the world fuel regulations and the new domestic ...

Claims

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Application Information

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IPC IPC(8): B01J29/62C10G35/095
CPCB01J29/62C10G35/095
Inventor 黄丽华杨永陈骁赵春利陶智超杨勇李永旺
Owner SYNFUELS CHINA TECH CO LTD
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