Integrated Fischer-Tropsch synthetic oil hydrogenation purification

An integrated cost-effective, hydro-upgrading technology, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of stability and operation cycle adverse effects, poor product quality, etc., to improve the utilization rate and The effect of life cycle, less equipment, lower investment and operating costs

Active Publication Date: 2008-05-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Due to the higher content of olefins and nitrogen in Fischer-Tropsch oil, direct contact with isomerization cracking catalysts has adverse effects on its stability and operating cycle, and the product quality is poor

Method used

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  • Integrated Fischer-Tropsch synthetic oil hydrogenation purification

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Experimental program
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Embodiment

[0039] The catalysts and operating conditions used in the test are listed in Table 2, the properties of the product naphtha fraction are listed in Table 3, and the properties of the product diesel fraction are listed in Table 4.

[0040] As can be seen from the data in the table, adopting the method provided by the present invention at a hydrogen partial pressure of 6.4MPa, a hydrofining reaction temperature of 300°C, a hydroisomerization cracking reaction temperature of 363°C, and a total volume space velocity of 2.0h -1 , Processing Fischer-Tropsch synthetic full distillate oil under the condition of hydrogen oil volume ratio of 800v / v can fully convert the wax oil fraction into naphtha and diesel products. The yield of diesel product is relatively high, 83.6% by weight, and its cetane number is 80, which can be blended with low cetane number diesel fraction; naphtha fraction is mainly composed of alkanes, which is a good raw material for steam cracking to ethylene .

[004...

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Abstract

A kind of integrated hydrogenation improving quality method for the oil fractions from Fishcher-Tropsch synthesis process, it is used to gain high quality middle fraction oil. The all fractions and hydrogen contact with hydrofining catalyst, the middle fraction oil gained after isolation, naphtha and tail oil will be mixed by the reactant liquor of hydrofining and the reactant liquor of hydrocracking reactant liquor, the tail oil and hydrogen will be mixed and then circulate to isocracking reacktor and contact with hydrocracking and isocracking catalyst. The yield of the diesel oil is higher than 80% by the method, and the cetane number will be as high as 80, The water produced by hydrofining process can be prevented to go into the isocracking reacktor by this method, the availability and using periodic can also be improved. Moreover, the technological process of this method is high integrated; the equipment needed is fewer, so the cost of investment and operation can be decreased.

Description

technical field [0001] The present invention pertains to a method for treating hydrocarbon oils using multiple hydrotreating processes, more particularly to a method for treating Fischer-Tropsch synthetic oils using a hydrotreating process and a cracking process in the presence of hydrogen. technical background [0002] At present, the main source of fuel used by various means of transportation in the world is petroleum, and various derivatives of petroleum provide a strong driving force for economic and social development. However, petroleum, as a non-renewable energy source, is facing the crisis of depletion day by day, and the quality of crude oil is getting worse and worse, and the content of non-ideal components such as polycyclic aromatic hydrocarbons, sulfur, nitrogen, etc. Before becoming a fuel commodity, it needs to go through an increasingly complex processing process to remove components that affect the environment, resulting in a substantial increase in producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/12
Inventor 胡志海李毅熊震霖孟勇新门卓武聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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