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Method for refining Fischer-Tropsch synthetic oil

A refining method and Fischer-Tropsch synthesis technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrogenation process, etc., can solve the problems of adverse effects of fixed-bed hydrogenation catalysts and many oxygen-containing compounds, so as to reduce the degree of adverse effects, The effect of reducing the amount of generation

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a kind of refining method of Fischer-Tropsch synthetic oil on the basis of prior art, more specifically, is a kind of hydrofinishing method of high-temperature Fischer-Tropsch synthetic oil, what to be solved is high-temperature Fischer-Tropsch synthetic oil There are too many oxygen-containing compounds in the Tropical synthetic oil, which will adversely affect the subsequent fixed-bed hydrogenation catalyst

Method used

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  • Method for refining Fischer-Tropsch synthetic oil
  • Method for refining Fischer-Tropsch synthetic oil
  • Method for refining Fischer-Tropsch synthetic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 1 part of high temperature condensate and 2.5 parts of low temperature condensate as oil for experiment.

[0021] The low-temperature condensate was taken, mixed fully according to the oil-water ratio of 2:1, and the washing temperature was 20°C. After natural sedimentation, the water phase was separated to obtain the low-temperature condensate after washing. The properties of the low-temperature condensate after washing are shown in Table 2.

[0022] Mix 1 part of the high-temperature condensate and the low-temperature condensate after washing with water, and the obtained mixed oil B is used as the raw material for hydrofining. The properties of the mixed oil B are shown in Table 2.

[0023] From the data in Table 1 and Table 2, it can be seen that the oxygen content of the low-temperature condensate after water washing is reduced from 4.28% by weight to 3.12% by weight, and the oxygen removal rate reaches 27%; the oxygen content of the mixed oil is reduced from 4....

Embodiment 2

[0027] Take 1 part of high-temperature condensate and 2.5 parts of low-temperature condensate as experimental oil.

[0028] Take the low-temperature condensate, fully mix it according to the oil-water ratio of 2:1, wash with water at 20°C, separate the water phase after natural sedimentation, and obtain the low-temperature condensate after the first water wash, and then add the low-temperature condensate after the first water wash with 2: The oil-water ratio of 1 was fully mixed, and the washing temperature was 20°C. After natural sedimentation, the water phase was separated. The properties of the low-temperature condensate after the second washing are shown in Table 4.

[0029] Mix 1 part of the high-temperature condensate with the low-temperature condensate after the second water washing, and the obtained mixed oil C is used as the raw material for hydrorefining. The properties of the mixed oil C are shown in Table 4.

[0030] From the data in Table 1 and Table 2, it can be ...

Embodiment 3

[0048]The mixed oil C is used as the raw material for hydrofining. The catalyst is RTF-1 developed by the Research Institute of Petroleum and Chemical Industry. Speed ​​2.0h -1 . The refined oil was sampled at different operating times to analyze its oxygen content. The results are shown in Table 6.

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Abstract

The invention relates to a method for refining Fischer-Tropsch synthetic oil, which comprises the following steps of: separating synthetic oil which comes from a high-temperature Fischer-Tropsch synthesis device to obtain a high-temperature condensate and a low-temperature condensate; washing the low-temperature condensate, and mixing the washed low-temperature condensate and the high-temperaturecondensate to obtain mixed oil; and refining the mixed oil by a hydrogenation process. Part of oxygen-containing compounds are removed from the high-temperature Fischer-Tropsch synthetic oil by a simple and low-cost washing method, the amount of generated water in the subsequent hydrogenation process is reduced, and the adverse effect of an overlarge amount of the generated water on a hydrogenation catalyst is reduced.

Description

technical field [0001] The invention belongs to a refining method of Fischer-Tropsch synthetic oil under the condition of hydrogen existence, more specifically, a refining method of high-temperature Fischer-Tropsch synthetic oil. Background technique [0002] The rapid development of my country's national economy has a strong demand for energy. Since my country became a net importer of oil in 1993, the gap between oil supply and demand has expanded year by year, and the dependence on foreign crude oil has increased year by year. In 2006, the foreign dependence of crude oil was 43%. It is more than 46% in 2020 and is expected to reach 60% in 2020. Fluctuations and changes in the international oil market will directly affect the security and stability of our country's economy and politics. Solving the supply and demand problem of liquid fuels by synthesizing liquid fuels through non-petroleum routes not only meets the national energy strategic security requirements, but also p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
Inventor 吴昊胡志海聂红李猛徐润董松涛
Owner CHINA PETROLEUM & CHEM CORP