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Method for producing white microcrystalline wax by one-step hydrogenation

A microcrystalline wax and white technology, which is applied in the refining of petroleum wax, can solve the problems of inability to use paraffin wax hydrogenation device, difficult operation, and production of microcrystalline wax, so as to reduce equipment investment and operating costs, operate flexibly, and produce low cost effect

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of this patent is that the process is long and the operation is difficult, and the existing paraffin hydrogenation unit cannot be used to produce microcrystalline wax

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The microcrystalline wax raw material containing 3.11w% oil is used, the properties are shown in Table 1, and the catalyst is Catalyst A in Table 2.

[0017] The mixture of microcrystalline wax and hydrogen heated to a certain temperature enters the reactor, and under the action of the catalyst, by controlling the appropriate reaction conditions, hydrodesulfurization, denitrogenation, deoxygenation and aromatic hydrocarbon saturation reactions are carried out; after the material flows out of the reactor, it passes through After gas-liquid separation and vacuum deodorization, it is a white microcrystalline wax product. The process conditions and product properties are shown in Tables 3 and 4. The products in Table 4 meet the quality requirements for cosmetic grade paraffin wax (SH0009-90), and the polycyclic aromatic hydrocarbons meet the requirements of the food paraffin wax standard.

Embodiment 2

[0019] The raw material used in this embodiment is oil-containing 2.56% microcrystalline wax raw material (referring to Table 1), and the catalyst is the same as in Example 1, and the process conditions and product properties are shown in Tables 3 and 4 respectively.

Embodiment 3

[0021] The used raw material of this implementation is the oil-containing 2.02% microcrystalline wax raw material (referring to Table 1). Process conditions and product quality are shown in Tables 3 and 4 respectively.

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PUM

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Abstract

The invention offers a method for making white microcrystalline wax of high quality through hydrogenation. The invention takes poor microcrystalline wax as raw material, adopts single high pressure hydrogenation method, and the oil-hydrogen mixture from the reactor is treated by separation, deodor to get the white microcrystalline wax products under the condition of 10MPaí½18MP and 270í½ 340íµ and through the catalytic bed with proper bore construction. In the said invention, hydrogenation desulfuration, denitrification and aromatics saturation proceed in one reactor, and it could be used to produce white microcrystalline wax products for food and cosmetics. The invention is characterized on short process flow, simple operation, etc, therefore, we can use the present ceresin wax hydrogenation devices to produce refining microcrystalline wax.

Description

technical field [0001] The invention describes a production method of high-quality white (Saybolt color greater than +20) microcrystalline wax, especially a method for producing a white microcrystalline wax product by one-stage hydrogenation. Background technique [0002] Microcrystalline wax is an important raw material for medicine, daily chemical industry and other fine chemical products. The purpose of its refining is to remove impurities such as sulfur, nitrogen, oxygen, and non-ideal components such as saturated aromatic hydrocarbons, and improve the color so that the product quality can meet the required product standards. [0003] Unrefined microcrystalline wax contains a large amount of impurities such as sulfur, nitrogen, oxygen, and non-ideal components such as aromatic hydrocarbons. Methods such as medium-pressure hydrogenation refining and clay refining have problems such as low product yield and poor quality; clay refining also has Environmental protection iss...

Claims

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Application Information

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IPC IPC(8): C10G73/44
Inventor 李殿昭袁平飞王士新刘平蔡立
Owner CHINA PETROLEUM & CHEM CORP
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