Method of hydrotreating wax and process for producing fuel base
A hydrotreating and hydrocracking technology, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, chemical instruments and methods, etc., can solve the problems of poor fluidity at low temperature, difficulty in direct use, restrictions on commodity use, etc., and achieve improvement The effect of catalytic activity
Active Publication Date: 2009-04-15
NIPPON OIL CO LTD
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Problems solved by technology
For example, in light oil, if the n-paraffin content is too high, the low-temperature fluidity will deteriorate, and when the low-temperature fluidity deteriorates, the use as a commodity will be limited.
Since light oil produced in FT synthesis is almost all n-alkanes, it is difficult to use it directly
Method used
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Embodiment 1
FT wax (carbon number 20-80, n-paraffin content: 96% by mass) was prepared as a raw material for hydrocracking. In addition, USY zeolite, silica-alumina (alumina content: 17 mol%) and alumina binder were mixed according to a mass ratio of 3:57:40, and formed into a cylindrical shape with a diameter of about 1.5 mm and a length of 3 mm. , and calcined at 500°C for 1 hour to obtain a catalyst carrier. It should be noted that, as the above-mentioned USY zeolite, a molar ratio of silica to alumina in the USY zeolite was 37, and a USY zeolite having an average particle diameter of 0.82 μm was used. The obtained catalyst support was impregnated with an aqueous solution of dichlorotetraammine platinum (II), dried at 120° C. for 3 hours, and then calcined at 500° C. for 1 hour, thereby preparing a load of 0.8 on the basis of the total amount of catalyst on the catalyst support. A hydrocracking catalyst formed by mass % platinum.
[0042] Next, 300 ml of the catalyst was filled in a f...
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Abstract
A method of hydrotreating a wax, characterized by comprising: a step in which a wax produced by FT synthesis is used as a raw material and the wax is hydrocracked in the presence of hydrogen with a catalyst comprising a support comprising zeolite and, deposited thereon, a metal in Group VIII of the Periodic Table; a step in which the raw material is temporarily switched from the wax to a distillate oil obtained by distillating a mixture of the product of wax hydrocracking obtained in the first step and the product of hydrocracking of an intermediate fraction produced by FT synthesis, and the distillate oil is hydrocracked in the presence of hydrogen at a reaction temperature of 160-330 DEG C; and a step in which the raw material is switched from the distillate oil to the wax and the wax is hydrocracked in the presence of hydrogen.
Description
technical field [0001] The present invention relates to a method for hydrotreating wax and a method for producing fuel substrates. Background technique [0002] In recent years, from the standpoint of environmental protection, restrictions on the sulfur content in liquid fuels such as gasoline and light oil have rapidly become stricter. Therefore, there is an increasing expectation for clean liquid fuels with low sulfur or aromatic content. One of the methods for producing such a clean fuel is a Fischer-Tropsch (FT) synthesis method using carbon monoxide and hydrogen obtained by gasification of coal or pitch or reforming of natural gas as raw materials. [0003] The fuel base material obtained by the FT synthesis method is mainly composed of normal alkanes, and also contains a part of oxygen-containing compounds. Therefore, it is difficult to use it directly as a fuel. Isomerization of paraffins into isoparaffins. In addition, the FT synthesis method will simultaneously g...
Claims
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IPC IPC(8): C10G47/14C10G45/64C10G49/06C10G49/08C10G65/10B01J23/42B01J38/58
CPCB01J29/126C10G47/18C10G2300/1022C10G2300/4006
Inventor 关浩幸东正浩
Owner NIPPON OIL CO LTD