Production process of food-grade white oil

A production process, food-grade technology, applied in the field of food-grade white oil production process, can solve the problems of demanding production process, high requirements for the operation of the reaction system, limited cutting precision of fractions, etc., and achieve good stability, flexible operation, Satisfy the effect of long-term operation

Inactive Publication Date: 2020-08-11
CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The production process of white oil is mainly the process of removing sulfhydryl, aromatics and other impurities. The traditional hydrogenation method generally uses multi-stage hydrogenation, which is costly, requires high catalysts, and may leave heavy metals. The production process is complex and the reaction system operation The requirements are high, and the cutting precision of the fractionation system is limited, especially with the continuous improvement of the high-grade white oil standard, the requirements for the production process are becoming more and more stringent

Method used

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  • Production process of food-grade white oil
  • Production process of food-grade white oil
  • Production process of food-grade white oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of production technology of food-grade white oil, comprises the following steps:

[0025] S1. Enter the reaction system: mix the raw material oil with hydrogen, and after being heated by the heating furnace 1, enter the reactor I 2 equipped with a hydrogenation catalyst, protective agent and ceramic balls, and the reactor with a hydrogenation catalyst and ceramic balls Hydrofining is carried out in II 3, and the unsaturated hydrocarbons in it are subjected to an addition reaction; the reactant passes through the high-pressure separator 4 and the low-pressure separator 5 for gas-liquid separation and then enters the fractionation system; the reactor I 2 and the reactor II 3 adopt The single-stage series form forms a series reaction zone.

[0026] Wherein, described raw material oil, hydrogenation catalyst and reaction condition are as follows:

[0027] 1) Raw oil properties:

[0028]

[0029] 2) Catalyst and filler:

[0030] Reactor I is filled with ceramic ...

Embodiment 2

[0044] A kind of production technology of food-grade white oil, comprises the following steps:

[0045] S1. Enter the reaction system: mix the raw material oil with hydrogen, and after being heated by the heating furnace 1, enter the reactor I 2 equipped with a hydrogenation catalyst, protective agent and ceramic balls, and the reactor with a hydrogenation catalyst and ceramic balls Hydrofining is carried out in II 3, and the unsaturated hydrocarbons in it are subjected to an addition reaction; the reactant passes through the high-pressure separator 4 and the low-pressure separator 5 for gas-liquid separation and then enters the fractionation system; the reactor I 2 and the reactor II 3 adopt The single-stage series form forms a series reaction zone.

[0046] Wherein, described raw material oil, catalyzer and reaction condition are as follows:

[0047] 1) Raw oil properties:

[0048]

[0049] 2) Catalyst and filler:

[0050] Reactor I is filled with ceramic balls ∅3~∅20,...

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Abstract

The invention provides a production process of food-grade white oil. Lubricating oil base oil, industrial white oil, hydrocracked tail oil, hydroisomerized and dewaxed tail oil and the like are used as raw oil, a noble metal catalyst is adopted, a reaction product is obtained through one-stage series hydrogenation, the reaction product is subjected to high-pressure and low-pressure gas-liquid separation and then subjected to vacuum fractionation and side steam stripping, and food-grade white oil products with different viscosity marks are obtained. Compared with the prior art, the method has the advantages that the process flow is simple, the separation precision is high, a reaction system and a fractionation system are reasonably designed and optimally adjusted, the same set of device canbe used, the raw materials with various viscosity grades are fed and produced in a switching manner, and food-grade white oil products with different grades can be obtained according to market requirements.

Description

technical field [0001] The invention belongs to the technical field of food-grade white oil, in particular to a production process of food-grade white oil. Background technique [0002] White oil is an ultra-deeply refined special mineral oil, which is a component of lubricating oil. The composition of white oil is mainly saturated hydrocarbons (naphthenes and alkanes), and its impurity content such as sulfur, nitrogen, oxygen, and aromatics is extremely low, and it has good chemical inertness and excellent light and heat stability. White oil has a wide range of uses, such as textile and chemical fiber production, food demoulding, dairy product processing, pharmaceutical defoaming, lipstick, skin care oil production, etc. [0003] White oil is mainly removed by sulfonation or hydrofining to remove impurities such as sulfur, nitrogen, oxygen, aromatics, and heavy metals in the oil to obtain a colorless, odorless, and non-corrosive high-quality petroleum product. Due to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2400/10
Inventor 倪嵩波郭超岳昌海韩国耀兰乐意朱忆宁秦凤祥吴丹
Owner CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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