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New technology for refining Fischer-Tropsch synthesis light fraction oil

A technology of light distillate oil and Fischer-Tropsch synthesis, which is applied in the fields of multi-stage series refining process treatment, petroleum industry, and hydrocarbon oil treatment. It can solve the problems of multiple equipment, complicated processes, and large investment, and achieve improved separation efficiency. , Improve the extraction effect, reduce the effect of material volatilization loss

Inactive Publication Date: 2017-05-31
LUOYANG HEMENG TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] The method for separating oxygen-containing compounds and 1-hexene from Fischer-Tropsch synthetic oil provided by patent CN105777467A is to use Fischer-Tropsch synthetic oil as raw material, cut the C6 distillate stream in the pre-cut tower, and use two extraction agents to enter The material operation is to obtain the oxygen-rich compound stream and the crude C6 hydrocarbon stream after removing the oxygenate in the extraction tower; then use the third extractant to further remove the oxygenate in the crude C6 hydrocarbon stream; the process is complicated and has many equipments. big investment

Method used

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Embodiment

[0027] Using Fischer-Tropsch synthetic light distillate produced by Inner Mongolia First Coal Chemical Company as raw material, the main component is C4-C21, the density is 737 kg / m3, the acid value is 65mgKOH / 100ml, mainly normal olefins and normal alkanes, and the olefin content is up to 55%-60% (more than 90% are alpha olefins), metal ion impurities are mainly trace iron impurities, very trace amounts of sulfur, nitrogen, and aromatics.

[0028] The pilot plant of the new Fischer-Tropsch synthetic light distillate refining process includes: φ100×800mm 4A molecular sieve adsorption column and φ100×800mm alkaline nut shell activated carbon adsorption column, 5L extractant compounder, 30L304 stainless steel stirring extraction refining kettle, 30L cone 304 stainless steel static separator at the bottom; the composite extractant solution is made by adding 600ml of 5% NAOH aqueous solution to 3000ml of analytically pure sulfinyl bis-methane and mixing uniformly; negative pressure in...

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Abstract

The invention relates to a new technology for refining Fischer-Tropsch synthesis light fraction oil. The new technology comprises solid-phase adsorption, extraction refining, separation and extraction agent refining and a recycling unit. In the new technology for refining Fischer-Tropsch synthesis light fraction oil provided by the invention, Fischer-Tropsch synthesis light fraction oil is used as a raw material; metal ion impurities and oxygenated compounds in the Fischer-Tropsch synthesis light fraction oil are removed by the technology unit while the recycled refined extraction agent is circularly utilized. The new technology for refining Fischer-Tropsch synthesis light fraction oil provided by the invention has the advantages of simple process, high recycling efficiency, recycling and cyclic utilization of extraction agent, low cost of extraction agent, small investment, and the like.

Description

Technical field [0001] The invention relates to a new process for refining Fischer-Tropsch synthetic light distillate oil, and belongs to the Fischer-Tropsch synthesis technical field of coal chemical industry. Background technique [0002] With the exploitation of oil resources by countries in the world, oil resources are becoming less and less. Many countries rely heavily on imports for oil, which not only carries a heavy economic burden, but also jeopardizes the country’s own energy security. This is especially true for many countries where oil resources are already scarce, such as China. The development of carbon-based raw materials other than oil such as coal and natural gas New technologies for producing liquid fuels, such as coalbed methane, have received widespread attention. The reaction of using synthesis gas to generate hydrocarbons under the action of a catalyst is called the Fischer-Tropsch synthesis reaction. The sources of synthesis gas are very wide. It can be de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/08
CPCC10G53/08C10G2300/1022C10G2300/202C10G2300/205
Inventor 李绍通
Owner LUOYANG HEMENG TECH CO LTD
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