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Preparation of low aromatic and low viscosity narrow fraction injection liquid paraffine

A narrow-cut, white oil technology, applied in the field of low-aromatic and low-viscosity narrow-cut injection white oil, can solve the problems of low oil viscosity, instability, poor performance stability of injection white oil, etc., and achieve single product components and stable performance. The effect of good performance and narrow distillation range

Inactive Publication Date: 2009-07-08
江苏联东化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of carbon atoms is too small, the viscosity of the oil is too low, it is easy to break the emulsion during the vaccine preparation process and make the product performance unstable, so the carbon number distribution must be more reasonable
[0004] At present, the general production and production of injection white oil in our country is made by acid-base or deep hydrogenation of lubricating oil base oil with corresponding viscosity. At present, lubricating oil base oil is basically blended according to certain physical properties such as viscosity and flash point. Therefore, the performance stability of the injection white oil prepared by it is poor, and the performance of the vaccine produced is also unstable.

Method used

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  • Preparation of low aromatic and low viscosity narrow fraction injection liquid paraffine
  • Preparation of low aromatic and low viscosity narrow fraction injection liquid paraffine
  • Preparation of low aromatic and low viscosity narrow fraction injection liquid paraffine

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The present embodiment adopts paraffin wax raw material, through the following technological process (see attached figure 1 ) to obtain the injected white oil finished product:

[0024] 1. Preparation of raw materials

[0025] The paraffin base is distilled by a distillation method, and the distilled fraction at 270-320° C. is used as the white oil raw material for injection.

[0026] 2. Remove impurities from raw materials

[0027] The hydrogen and white oil raw materials are simultaneously fed into the hydrogenation reactor at a volume ratio of 500 to carry out the first-stage hydrogenation reaction. The hydrogen passes through the reaction bed in the hydrogen reactor and is separated by a high-pressure separator for recycling. A typical Ni-Mo-W hydrogenation catalyst is used in the hydrogenation reaction, the pressure is controlled at 15.5MPa, the temperature is controlled at 230°C, and the volume space velocity is 1.0h -1 , through this segment of hydrogenation r...

Embodiment 2

[0038] Wooden embodiment adopts intermediate base crude oil as raw material, by following technological process (please refer to appendix figure 1 ) to obtain the injected white oil finished product:

[0039] 1. Preparation of raw materials

[0040] The intermediate crude oil base is distilled by distillation method, and the distilled fraction at 279-312° C. is used as the white oil raw material for injection.

[0041] 2. Remove impurities from raw materials

[0042] The hydrogen and white oil raw materials are simultaneously fed into the hydrogenation reactor at a volume ratio of 750 to carry out the first-stage hydrogenation reaction. The hydrogen passes through the reaction bed in the hydrogen reactor and is separated by a high-pressure separator for recycling. A typical Ni-Mo-W hydrogenation catalyst is used in the reaction, the pressure in the hydrogenation reaction is controlled at 16.0MPa, the temperature is controlled at 260°C, and the volume space velocity is 0.8h ...

Embodiment 3

[0053] The present embodiment adopts paraffin wax raw material, through the following technological process (see attached figure 1 ) to obtain the injected white oil finished product:

[0054] 1. Preparation of raw materials

[0055] The paraffin-based oil is distilled by distillation, and the distilled fraction at 270-320°C is used as the raw material for white oil for injection.

[0056] 2. Remove impurities from raw materials

[0057] The hydrogen and white oil raw materials are simultaneously fed into the hydrogenation reactor at a volume ratio of 1000 to carry out the first-stage hydrogenation reaction. The hydrogen passes through the reaction bed in the hydrogen reactor and is separated by a high-pressure separator for recycling. A typical Ni-Mo-W hydrogenation catalyst is used in the reaction, the pressure in the hydrogenation reaction is controlled at 16.5MPa, the temperature is controlled at 290°C, and the volume space velocity is 0.5h -1 , through this segment of ...

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Abstract

The invention relates to a method for injection preparation of low-aromatic low-viscosity narrow fraction. The method has the advantages that the method comprises the steps of: 1) the preparation of a raw material, in which a related petroleum product is distilled to obtain fraction with a temperature of between 270 and 320 DEG C to serve as an injection white oil raw material; 2) the impurity removal of the raw material, in which hydrogen and the raw material are added into a hydrogenation reactor according to the volume ratio of 500: 1000 for a first-stage hydrogenation reaction to obtain impurity-removed white oil; 3) deep dearomatization, in which the hydrogen and the impurity-removed white oil are added into the hydrogenation reactor according to the volume ratio of 300: 500 for a second-stage hydrogenation reaction to obtain dearomatized white oil with the content of aromatic hydrocarbon less than 50ppm; and 4) adsorption refining, in which the dearomatized white oil is removed with foreign odor and mechanical impurities through an adsorptive reactor with 13X as an adsorbent under the condition that the pressure is normal pressure, the temperature is between 115 and 125 DEG C, and the volume space velocity is between 0.5 and 1.0h, and is refined to obtain injection white oil. The method has the advantages that the method adopts the narrow fraction, and has relatively single product components and good performance stability; and the content of the aromatic hydrocarbon of the injection white oil prepared by adopting two-step hydrogenation and adsorption refining is less than 50ppm, and is lower than those of import white oil and domestic white oil, so a product almost has no toxicity.

Description

technical field [0001] The invention relates to a production method of injection white oil, in particular to a method for injection white oil with low aroma, low viscosity and narrow fraction. Background technique [0002] Injection white oil and emulsifier are the main raw materials for the production of inactivated vaccines. At present, white oil for injection in my country is mainly replaced by No. 10 food-grade white oil, and the viscosity at 40°C is generally 7.9-13mm. 2 / s, the content of aromatics is generally about 170ppm, and the carbon number distribution is also wide, so the inactivated vaccine (water-in-oil) prepared with it is often viscous, which makes injection difficult and has strong toxic and side effects (allergies). It causes redness, swelling and suppuration at the injection site, and the erythema at the injection site of the animal cannot be eliminated. After slaughter, it will affect the quality and appearance of the meat, and even affect food safety....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/06
Inventor 陈锡武刘卫星薛家兵张笑意
Owner 江苏联东化工有限公司
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