Synthetic hydrocarbon base oil prepared through coal-based alpha olefin

A technology of coal-to-olefins and hydrocarbon synthesis, which is applied in the production of liquid hydrocarbon mixtures and the petroleum industry, and can solve problems such as complex components, difficult separation of alkanes and olefins, and poor quality of PAO

Inactive Publication Date: 2014-01-22
上海纳克润滑技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another method is the preparation of olefins by wax thermal cracking, which contains a large amount of alpha olefins and internal olefins. The composition is complex, and the quality of the synthesized PAO is poor, which cannot fully meet the needs of high-quality lubricating oils.
[0008] Low-molecular-weight olefins produced by high-temperature Fischer-Tropsch synthesis process have a continuous carbon number distribution and are mixed with normal alkanes of the same carbon number, making it difficult to effectively separate alkanes and olefins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] A dry 1-liter four-necked round-bottom glass flask equipped with a motor-driven stirrer was placed in a cooling water bath to control the reaction temperature. Add 30-60g of C 6 ~C 14 The alkane solvent is placed in a four-necked bottle, and 3 to 4 grams of AlCl are added 3 and Accelerator A in the amount calculated as above.

[0082] Stir the materials in the flask, and slowly add 200g of coal liquefied C 6 ~C 13 Mix the olefin solution for 3.5-5 hours, and keep stirring for 0.5 hours after the dropwise addition is completed, and the whole process is carried out under the protection of nitrogen. After the reaction is completed, the material in the above reactor is added to an equal volume of deionized water at 60-70°C, so that the catalyst AlCl 3 Decomposition followed by separation of the oil layer from the water layer. The separated oil layer is distilled under reduced pressure (while adding about 1%~3% white clay and about 0.3~0.6% anhydrous Na 2 CO 3 ) to r...

Embodiment 2

[0084] Operating procedure is identical with embodiment 1, and difference is that the solvent used is C 9 ~C 16 alkanes, the alkenes used are coal liquefaction C 9 ~C 16 mixed olefins. The product thus obtained had a pour point of -40°C, a flash point of 293°C, a viscosity of 41.43 cSt at 100°C and a viscosity index of 162.

Embodiment 3

[0087] Operation procedure is identical with embodiment 1, and difference is that used AlCl 3 The amount of accelerator A is 5-7g and the amount calculated according to the above. The product thus obtained had a pour point of -30°C, a flash point of 303°C, a viscosity of 100.2 cSt at 100°C and a viscosity index of 175.

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Abstract

The invention provides a method for preparing synthetic hydrocarbon through coal-based olefin. The method comprises the following steps that a coal chemical industry byproduct light oil part in the coal-based olefin is provided and comprises alpha olefin and alkane; a synthetic hydrocarbon base oil product used as high-quality lubricating oil is prepared with olefin component AlCl3 catalysts and one or more accelerants in high-temperature Fischer-Tropsch coal chemical industry byproduct light oil.

Description

technical field [0001] The invention relates to the downstream development and application of Fischer-Tropsch synthetic coal-to-oil products, in particular to the deep processing application of alpha olefins in the light oil part of Fischer-Tropsch synthetic coal-to-oil products. Background technique [0002] For a long time, my country is not only a big coal producing country but also a big coal consuming country, while the application of coal chemical industry is relatively small. Changing the structure and trend of coal consumption, vigorously promoting the coal chemical industry, and enhancing the comprehensive level of coal utilization have become the direction of development and utilization. [0003] The current Fischer-Tropsch synthesis (F-T) process is divided into two categories: high-temperature Fischer-Tropsch synthesis and low-temperature Fischer-Tropsch synthesis. Among them, the high-temperature Fischer-Tropsch synthesis process uses Fe-based catalysts at a te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/02
Inventor 洪显宗刘中文李鹏飞
Owner 上海纳克润滑技术有限公司
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