Production method of vaseline

Abstract

The invention discloses a production method of vaseline. The method comprises the following steps: 1, blending HVI650 cerate, reduced pressure distillate oil base oil and selective reduced pressure residual oil light removal cerate which are treated as raw materials; 2, hydrotreating the obtained blended mixture through first-stage series hydrofinishing with a fixed bed; and 3, allowing the blended mixture to go through a first reactor and a second reactor under hydrofinishing conditions, wherein the first reactor is filled with a hydroisomerizing catalyst and a hydrofinishing catalyst, and the second reactor is filled with a hydrofinishing catalyst. The method of the invention allows high quality vaseline products to be obtained by treating raw materials which cannot be vaseline raw materials in the prior art as the vaseline raw materials, blending the raw materials with a proper process and hydrogenating the raw materials, so the vaseline raw material source is enlarged, the HVI650 cerate utilization approach is widened, and economic benefits are improved.

Description

technical field [0001] The invention relates to a method for producing petrolatum, in particular to a production method which can expand the source of petrolatum raw materials and obtain high-quality petrolatum products. Background technique [0002] Vaseline is an ointment-like petroleum product with certain properties. The conventional vaseline production process is to firstly blend the raw materials to make the physical properties of the blend meet the product requirements; then refine the blend to remove non-ideal chemical components such as sulfur, nitrogen, oxygen and condensed ring aromatics contained in the blend . [0003] The traditional vaseline blending components are vacuum distillate oil base oil and vacuum residue light dewaxing paste. The base oil can be flexibly used in various brands and varieties, while the light dewaxing paste has few varieties and low output, thus The raw material source of petroleum jelly is limited. [0004] CN1061678C introduces a ...

AI Technical Summary

Problems solved by technology

[0003] The traditional vaseline blending components are vacuum distillate oil base oil and vacuum residue light dewaxing paste. The base oil can be flexibly used in various brands and varieties, while the light dewaxing paste has few varieties and low output, thus The source of Vaseline raw materials is limited

[0004] CN1061678C introduces a method for refining petroleum jelly by hydrogenation. The method adopts a series hydrogenation process of two catalyst beds, which can be used at a hydrogen partial pressure of 10-16MPa and a volumetric space velocity of 0.1-0.5h. -1 , Hydrogen oil volume ratio 300-1400, first bed temperature 320-420°C, second bed temperature 240-320°C to produce high-quality petrolatum products, but this patented technology fails to solve the problem of expanding the source of petrolatum raw materials question

Affected by this, the technology of HVI650 wax paste to prepare vaseline has not been implemented in industrial production

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