Hydrogenation catalyst as well as preparation method and application thereof

A catalyst and hydrofining technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as product quality not meeting requirements, achieve increased dispersion, improve product quality, and improve operation Effects of Stability Issues

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above existing paraffin hydrogenation technologies generally have the problem

Method used

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  • Hydrogenation catalyst as well as preparation method and application thereof
  • Hydrogenation catalyst as well as preparation method and application thereof
  • Hydrogenation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] (1) Roast kaolin raw soil in a high-temperature furnace at a temperature of 600°C and keep the temperature for 4 hours. After cooling, weigh 30g and put it into a container, add 150mL of 2mol / L nitric acid and 150mL of 2mol / L citric acid, and heat for reaction. The reaction temperature is 60°C, and the reaction time is 8h.

[0025] (2) Add 30g of Y-type molecular sieve to the modified kaolin slurry, then add 700mL of distilled water, the solid content in the slurry is 6wt%, and heat to 70°C. The prepared concentration is 46gAl 2 o 3 / L of sodium metaaluminate and a concentration of 15gAl 2 o 3 / L of aluminum sulfate solution was added to the modified kaolin slurry in parallel, and the pH was controlled to be 8.5, and the temperature was maintained at 70°C during the gelation process. Add 40mL of the condensation product of alkylphenol and propylene oxide (OP-10), an organic pore-enlarging agent, after gel formation. The aging time was 40 minutes,...

Example Embodiment

[0028] Example 2

[0029] Other conditions are the same as in Example 1, except that the amount of the mixture of ethyl acetoacetate and acetic acid is changed to 80 g (including 20 g of ethyl acetoacetate and 60 g of acetic acid). The finished product number of the catalyst is B, and the properties of the catalyst are shown in Table 1. Example 3

Example Embodiment

[0011] (3) adding an adhesive to the silicon-containing alumina powder prepared in step (2), and obtaining a silicon-containing alumina carrier after extrusion molding, drying and roasting;

[0030] Other conditions are with embodiment 1, just replace ethyl acetoacetate with butyl acetoacetate, replace acetic acid with succinic acid. The finished product number of the catalyst is C, and the properties of the catalyst are shown in Table 1.

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Abstract

The invention discloses a preparation method of a hydrogenation refining catalyst. The method comprises the following steps: (1) performing high-temperature calcination on original clay, enabling the calcinated clay to react with mixed acid, and pulping so as to form a serous fluid, wherein the mixed acid is the mixture of strong acid and weak acid; (2) adding a Y-shaped molecular sieve into the serous fluid obtained in the step (1), uniformly stirring, adding an acid solution containing aluminum and an alkaline solution in a concurrent flow manner to carry out a gelatinizing reaction, and aging, filtering, washing and drying, so as to obtain alumina powder containing silicon; (3) adding an adhesive into the alumina powder containing silicon, which is prepared in the step (2), and performing extrusion molding, drying and calcination, so as to obtain an alumina carrier containing silicon; (4) preparing a nickel-tungsten active-component solution which contains grease and an organic acid, adding the carrier prepared in the step (3) into the nickel-tungsten active-component solution to dip, and drying and calcinating, so as to obtain the hydrogenation catalyst. Appropriate bonding force is generated between the catalyst carrier and active components, and the degree of dispersion of the active components is moderate. The catalyst is applied in a paraffin hydrorefining reaction, and has the advantages of high stability, high quality of paraffin hydrorefining products, and the like.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and its preparation method and application, in particular to a paraffin hydrorefining catalyst and its preparation method and application. Background technique [0002] With the heavy and inferior quality of crude oil and the continuous increase in the number of imported crude oil, the sources of raw materials for paraffin hydrorefining are diversified, coupled with the use of various additives in the oil recovery process and fluctuations in the production process of some refineries, paraffin wax The downward trend of raw material quality is becoming more and more obvious. At the same time, with the birth of the new paraffin wax standard, the smell of food-grade paraffin wax has been reduced from 1 to 0 in the original standard. Some refineries use clay for supplementary refining or pre-refining, resulting in an increase in processing costs and a decrease in product yield. At the same time, waste clay ...

Claims

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Application Information

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IPC IPC(8): B01J29/16C10G73/44
Inventor 张艳侠付秋红包洪洲段日霍稳周陈明乔凯
Owner CHINA PETROLEUM & CHEM CORP
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