Method for producing micro crystal wax

A technology of microcrystalline wax and hydrogenation method, applied in petroleum wax refining and other directions, can solve the problems of increasing hydrogen consumption, increasing equipment investment and operating costs, reducing the processing capacity of hydrogenation catalysts, etc., so as to reduce hydrogen consumption and equipment investment. and operating costs, the effect of easy long-term stable operation

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrogen is circulated separately in two stages, thus increasing equipment investment and operating costs
In addition, the process of hydrogenation first and then dewaxing is adopted. Since the raw material contains a large amount of oily substances, the processing capacity of the hydrogenation catalyst is reduced and the hydrogen consumption is increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The soft microcrystalline wax raw material containing 4.11% oil is used, and the properties are shown in Table 1. Two reactors are used, and the same hydrorefining catalyst is used. The properties of the catalyst are shown in Table 2. Catalyst A.

[0022] The oil-hydrogen mixture heated to a certain temperature first enters the first reaction section, and under the action of the catalyst, by controlling the appropriate reaction conditions, mainly undergoes hydrodesulfurization, denitrogenation, and deoxygenation reactions; the material flowing out of the first reaction section passes through After cooling down, it enters the second reaction section. Under the action of the catalyst, by controlling the appropriate reaction conditions, the aromatic hydrocarbon saturation reaction is mainly carried out; after the material flows out of the second reactor, it is white after gas-liquid separation and vacuum deodorization Soft microcrystalline wax product. The process conditio...

Embodiment 2

[0024]The raw material used in this embodiment is oil-containing 3.06% soft microcrystalline wax raw material (referring to Table 1), and the catalyst is the same as in Example 1, and the loading amount (body) is one reverse: the two reverse is 2: 3, and the process conditions and product properties are respectively See Tables 3 and 4.

Embodiment 3

[0026] The used raw material of this implementation is the soft microcrystalline wax raw material (referring to table 1) that contains oil 2.21%, two bed layers are filled in a reactor, and two bed layers use identical hydrorefining catalyst, and catalyst properties are shown in table 2 Catalyst A, cold hydrogen is pumped between the two beds to reduce the temperature of the material. The process conditions and product quality are shown in Tables 3 and 4, respectively.

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PUM

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Abstract

The present invention discloses the hydrogenation process of producing white soft micro crystal wax. The said process has hydrodesulfurizing, dentrifying, deoxygenation and arene saturating reaction in optimal conditions to produce high quality white soft micro crystal wax product for food product and cosmetics. Compared with available technology, the said process is simple, long in operation period, and flexible in operation.

Description

1. Technical field [0001] The invention relates to a production method of white (Saybolt chroma greater than +20) soft microcrystalline wax, in particular to a method for directly producing high-quality white soft microcrystalline wax products by hydrogenation. 2. Background technology [0002] White soft microcrystalline wax is a special microcrystalline wax product, which has no national standard or industry standard. But it is an important raw material for the production of pharmaceuticals, daily chemicals and other fine chemical products. The purpose of refining the white soft microcrystalline wax is to remove impurities and aromatics, so that the product quality can meet hygienic standards. [0003] The microcrystalline wax fraction obtained from petroleum fractions contains more sulfur, nitrogen, oxygen, unsaturated hydrocarbons and other non-ideal components. The traditional refining methods include clay refining and medium-pressure hydrogenation, etc. The quality of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/42
Inventor 袁平飞李殿昭刘慧青胡伟龙赵启明蔡立王士新
Owner CHINA PETROLEUM & CHEM CORP
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