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A kind of special white oil for polystyrene and preparation method thereof

A polystyrene and white oil technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrogenation process, etc., can solve the problem of difficult and effective processing of high-viscosity PS white oil, limited cycloalkane content, and limited PS white oil performance To achieve the effects of ensuring application performance and safety, increasing the content of naphthenes, and excellent light and heat stability

Active Publication Date: 2018-01-26
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by this, the common polystyrene white oil naphthenes content is limited, C N The value is generally lower than 40%, which affects the compatibility between PS white oil and polystyrene, limits the use performance of PS white oil, and easily causes opaque polystyrene particles, which affects the appearance
[0005] Chinese patent CN 101392186 B ​​discloses a technology for producing PS white oil by sulfonation of sulfur trioxide gas. It is difficult to process high-viscosity PS white oil effectively

Method used

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  • A kind of special white oil for polystyrene and preparation method thereof
  • A kind of special white oil for polystyrene and preparation method thereof
  • A kind of special white oil for polystyrene and preparation method thereof

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Effect test

Embodiment 1

[0060] The naphthenic crude oil minus the second-line distillate 1 produced by the atmospheric and vacuum unit is used as raw material (the properties of the raw material are shown in Table 1), and the refined hydrocarbon oil is obtained by solvent refining process. The refined solvent is furfural, and the refined hydrocarbon oil is used as the raw material of the hydrogenation unit , the refined hydrocarbon oil passes through the hydrotreating section, the catalytic dewaxing section, the hydrofining section and the deeply saturated aromatics section in turn, and then is cut by distillation, and the fraction higher than 340°C is collected as PS white oil. Among them, the hydrogenation section adopts LH-23 hydrogenation catalyst, the reaction temperature is 340°C, the hydrogen partial pressure is 15.0MPa, and the space velocity is 1.0h -1 , the volume ratio of hydrogen to oil is 1000:1; the catalytic dewaxing section adopts SLD-821 isomerization dewaxing catalyst, the reaction t...

Embodiment 2

[0064] The naphthenic crude oil minus the second-line distillate 2 produced by the atmospheric and vacuum unit is used as raw material (the properties of the raw material are shown in Table 1), and the refined hydrocarbon oil is obtained by using a solvent refining process. The refined solvent is furfural, and the refined hydrocarbon oil is used as the raw material of the hydrogenation unit , the refined hydrocarbon oil passes through the hydrotreating section, the catalytic dewaxing section, the hydrofining section and the deeply saturated aromatics section in turn, and then is cut by distillation, and the fraction higher than 340°C is collected as PS white oil. Among them, the hydrogenation section adopts RL-1 hydrogenation catalyst, the reaction temperature is 345°C, the hydrogen partial pressure is 15.0MPa, and the space velocity is 1.5h -1 , the volume ratio of hydrogen to oil is 1000:1; the catalytic dewaxing section adopts RDW-1 hydrogen decondensation catalyst, the reac...

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Abstract

The invention discloses special white oil for polystyrene and a preparation method of the special white oil. The preparation method of the special white oil for the polystyrene comprises the following steps: 1) carrying out solvent refining on fraction oil of naphthenic base crude oil in an extraction tower; obtaining an extracted solution at the tower bottom of the extraction tower, and obtaining a refined solution at the tower top of the extraction tower; recycling a solvent to obtain refined oil; 2) carrying out a hydrogenation process and distillation and cutting on the refined oil to obtain the special white oil for the polystyrene, wherein the hydrogenation process comprises the steps of hydrogenation treatment, catalytic dewaxing, hydrogenation refining and hydrogenation to deeply saturate aromatic hydrocarbon in sequence. By adopting the preparation method disclosed by the invention, a feeding condition of a hydrogenation device can be effectively improved and operation conditions of the hydrogenation device are alleviated; the content of cycloparaffin in the PS white oil is effectively increased; harmful substances including the aromatic hydrocarbon and the like in an oil product can be deeply removed through a plurality of sections of hydrogenation processes, and application performance and safety of the PS white oil are guaranteed. The special white oil for the polystyrene, disclosed by the invention, exceeds an existing product level; meanwhile, the preparation method is stable and reliable and has moderate operation conditions.

Description

technical field [0001] The invention relates to a special white oil for polystyrene and a preparation method thereof, belonging to the field of petrochemical industry. Background technique [0002] Polystyrene is a polymer obtained by polymerization of styrene, including general-purpose polystyrene, foamed polystyrene, high-impact polystyrene, etc. Due to the high molecular weight of polystyrene, a certain amount of mineral oil needs to be added during processing to improve the processing performance and improve the performance of polystyrene resin. In the process of polystyrene processing, in order to reduce mechanical wear, energy consumption, increase production capacity, and reduce melt viscosity as much as possible, the most effective way is to use an effective lubricant-polystyrene special white oil (referred to as "PS white oil") "). The addition of special white oil for polystyrene can improve the fluidity of the melt, reduce the adhesion of the melt to machine par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14C08L25/06C08L91/00
CPCC08L25/06C10G67/14C08L91/00
Inventor 田义斌马莉莉朱玉龙许海龙蔡烈奎张翠侦焦祖凯刘淑芝秦一鸣杨琅
Owner CHINA NAT OFFSHORE OIL CORP
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