Aviation kerosene production method

A technology for aviation kerosene and diesel oil, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve problems such as increasing the complexity of the process, and achieve low sulfur and nitrogen content, high hydrogen consumption, and high utilization rate. Effect

Active Publication Date: 2016-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the method disclosed in CN102304387B, when the feed is hydrotreated, it is successively carried out in...

Method used

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  • Aviation kerosene production method
  • Aviation kerosene production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] The feed oil A used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 1.

[0096] This embodiment is carried out in two fixed-bed reactors, wherein the hydrofinishing catalyst is filled in the first fixed-bed reactor; the hydrogenation catalyst is filled in the second fixed-bed reactor sequentially based on the flow direction of the liquid feed Cracking catalysts and make-up hydrofinishing catalysts. The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and make-up hydrofinishing catalyst is 60:40:10.

[0097] Both the hydrofinishing catalyst and the make-up hydrofinishing catalyst were prepared as follows.

[0098] With 3000 grams of SilicaGel955 commercial silica gel (U.S. DavisonChemical company product, SiO 2 The content is 99.8% by weight) and 75 grams of scallop powder are evenly mixed, and then mixed with 84 milliliters of nitric acid (concentration 65-68 weight percent, analytically pure, pro...

Embodiment 2

[0108] Adopt the same method as Example 1 to produce aviation kerosene, the difference is that the hydrofinishing catalyst used and the added hydrofinishing catalyst used are prepared by the following method:

[0109] With 200 ml of dilute ammonia solution containing 21.9 g of ammonium paramolybdate (NH 3 The concentration is 10% by weight) to impregnate 200 grams of silica carrier S for 2 hours, then dry at 120° C. for 4 hours, and then bake at 460° C. for 4 hours to obtain a molybdenum-containing carrier loaded with molybdenum oxide. Then, the molybdenum-containing support was impregnated with 156 ml of an aqueous solution containing 13.3 g of cobalt nitrate and 4.4 g of nickel nitrate for 2 hours, followed by drying at 120° C. for 4 hours, and then at 470° C. for 4 hours to obtain the hydrofinishing catalyst. The composition of the catalyst was determined by X-ray fluorescence spectrometry, wherein, MoO 3 The content of NiO is 8.0% by weight, the content of NiO is 0.6% by ...

Embodiment 3

[0112] Adopt the same method as Example 1 to produce aviation kerosene, the difference is that the hydrocracking catalyst used is prepared by the following method:

[0113] With 185.7 grams of pseudo-boehmite (the product of Changling Branch of China Petrochemical Corporation, the dry basis is 70% by weight) and 93.3 grams of USY zeolite (the product of Changling Branch of China Petrochemical Corporation, the unit cell constant is 24.50 angstroms, crystallinity is 88%, sodium oxide content is 0.8% by weight, and dry basis is 75% by weight) mixed, extruded into a trilobal bar with a circumscribed circle diameter of 1.6 mm, and the wet bar is dried at 120 ° C for 3 hours, then Baking was carried out at 450° C. for 4 hours to obtain a carrier DZ1.

[0114] With 88 ml of ammonium metatungstate (in WO 3 meter, the concentration is 422 g / L), ammonium molybdate (as MoO 3 24.3 g / L) and nickel nitrate (69.8 g / L in terms of NiO) mixed aqueous solution impregnated 100 g of carrier DZ1 ...

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Abstract

The present invention discloses an aviation kerosene production method, which comprises that (1) hydrogen, raw material oil adopted as a fed liquid material, and a hydrorefining catalyst are subjected to a contact reaction; (2) aviation kerosene and diesel fuel are separated from the effluent obtained in the step (1); (3) at least partial diesel fuel obtained in the step (2), hydrogen and a hydrocracking catalyst are subjected to a contact reaction; and (4) the effluent obtained in the step (3) is conveyed into the step (1), and the effluent obtained in the step (3) and the raw material oil are adopted as the fed liquid material, wherein the aromatic hydrocarbon content in the raw material oil is more than or equal to 40 wt%, and the saturation rate of the total aromatic hydrocarbon in the fed liquid material is 75-95 wt% through the reaction condition in the step (1). According to the present invention, the catalytic cracking diesel fuel can be adopted as the raw material, the high density aviation kerosene meeting the GJB1603 6# jet fuel standard can be produced in the high yield manner, and the new process technology route is provided for production of the high value product from the low value catalytic cracking diesel fuel.

Description

technical field [0001] The present invention relates to a method for producing aviation kerosene, in particular to a method for processing hydrocarbon oil in the presence of hydrogen to produce aviation kerosene. Background technique [0002] Large specific gravity aviation kerosene, also known as high-density jet fuel, is a type of high-density (generally 0.835g / cm 3 Above), high volume calorific value (generally 35.8MJ / m 3 above) aviation kerosene. Compared with ordinary aviation kerosene (the density is generally 0.77-0.81g / cm 3 ) compared with high-density aviation kerosene can increase the calorific value per unit volume of the fuel, and when the volume of the fuel tank is constant, it can effectively increase the energy of the fuel carried by the fuel tank, which is an important guarantee for the high-speed and long-range flight of aerospace vehicles. For example: the density is 845kg / m 3 (Volume calorific value is about 36×10 3 MJ / m 3 ) fuel with a density of 78...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 任亮张毓莹蒋东红胡志海梁家林龙湘云辛靖
Owner CHINA PETROLEUM & CHEM CORP
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