Paraffin-hydrogenating refining process

A technology of hydrofining and paraffin wax, which is applied in the direction of petroleum wax refining, etc., can solve the problems of brittleness without improvement, poor toughness of paraffin products, and inability to improve the quality of poor paraffin hydrofining products, etc., to achieve easy hydrogenation reaction Operation, improving the effect of poor toughness of paraffin wax and easy catalyst loading

Active Publication Date: 2007-04-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The technology does not improve the quality of poorer quality paraffin hydrofinishing products
The above process does not improve the problems of poor toughness and brittleness of paraffin wax products

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0019] The β molecular sieve in the β molecular sieve-containing catalyst used in the process of the present invention is obtained by a new synthetic modification method, and the main steps of modification include:

[0020] (1) The beta molecular sieve slurry after crystallization is directly subjected to ammonium exchange, filtration, washing, drying and roasting;

[0021] (2) The β molecular sieve after roasting and deammonification carries out acid treatment;

[0022] (3) The acid-treated β molecular sieve is subjected to hydrothermal treatment.

[0023] The above crystallized β molecular sieve is generally synthesized by using organic ammonium (such as tetraethylammonium hydroxide) as a template by hydrothermal crystallization. Its SiO 2 / Al 2 o 3 The weight ratio is generally 25-30, Na 2 The content of O is 3.0wt%-4.0wt%. The crystallized β molecular sieve slurry is directly exchanged with ammonium salt, the concentration of ammonium salt in the slurry is 0.5-5.0mol...

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PUM

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Abstract

The invention disclosed a method of ozocerite hydrogenation refinement, which adopts ozocerite hydrogenation refining catalyst and hydrogenation isomerizing catalyst as the two main catalysts. Under the ozocerite hydrogenation refining conditions, the ozocerite contacts the two catalysts one by one. The invention can not only get refined ozocerite products with low sulphur and nitrogen content, low polycyclic aromatic hydrocarbon content, it can also decrease the content of ortho- diolefine in the ozocerite and overcome the defects of poor tenacity and brittleness. The ozocerite produced according to the invention can be used in food, medicine and cosmetics.

Description

technical field [0001] The invention relates to a method for hydrofinishing of paraffin wax, in particular to a method for hydrofining of improving the toughness of paraffin wax products. Background technique [0002] Paraffin wax is an important chemical raw material separated from petroleum fractions. It needs to be refined during the production process to remove a small amount of sulfur nitrogen compounds and condensed ring aromatics, so as to ensure that it is harmless to the human body during use. Hydrofining is a commonly used refining method. However, the refining method of paraffin wax including ordinary hydrofining does not improve the toughness of paraffin wax products much. Due to the shortcomings of poor toughness and brittleness of hard paraffin wax, it affects its use in many fields such as moisture-proof, insulation, and sealing. [0003] The paraffin hydrofining process generally needs to be carried out at a lower temperature, and high temperature will lead ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/44
Inventor 王士新袁平飞李殿昭刘平蔡立
Owner CHINA PETROLEUM & CHEM CORP
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