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Jet fuel production method

A technology for jet fuel and feedstock oil, applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve problems such as increasing process complexity, achieve low sulfur content and nitrogen content, reduce carbon deposition rate, and economic benefits. low effect

Active Publication Date: 2016-03-23
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 the expanded bed hydrotreating reactor and the fixed bed reactor, which increases the complexity of the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] The feed oil A used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 1.

[0109] This example is carried out in two fixed-bed reactors, and the first fixed-bed reactor is filled with a hydrofining catalyst; based on the flow direction of the liquid material, the second fixed-bed reactor is sequentially filled with a hydrocracking catalyst And replenish the hydrotreating catalyst. The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and make-up hydrofinishing catalyst is 40:60:10.

[0110] Both the hydrofinishing catalyst and the make-up hydrofinishing catalyst were prepared as follows.

[0111] 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, product of Shantou Xilo...

Embodiment 2

[0121] Jet fuel was produced in the same manner as in Example 1, except that the hydrofinishing catalyst used and the make-up hydrofinishing catalyst used were prepared as follows:

[0122] 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 weight, and the content of C...

Embodiment 3

[0125] Adopt the same method as embodiment 1 to produce jet fuel, the difference is that the hydrocracking catalyst used is prepared by the following method:

[0126] 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.

[0127] 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 for 1 ...

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Abstract

The present invention discloses a jet fuel production method, which comprises that (1) hydrogen gas, raw material oil and a hydrorefining catalyst are subjected to a contact reaction; (3) the effluent of the hydrorefining catalyst and a hydrocracking catalyst are directly subjected to a contact reaction, or after the gas phase stream is separated, a contact reaction is performed with a hydrocracking catalyst; (4) the effluent of the hydrocracking catalyst is separated to obtain a jet fuel and diesel oil; and (5) at least partial diesel oil and the raw material oil are mixed, or at least partial diesel oil and the feeding liquid of the hydrocracking catalyst are mixed, wherein the aromatic hydrocarbon content of the raw material oil is more than or equal to 40 wt%, the contact reaction condition of the step (1) makes the bicyclic aromatic hydrocarbon saturation rate in the raw material oil be 70-90%, and the contact reaction conditions of the step (3) makes the monocyclic aromatic hydrocarbon saturation rate in the feeding liquid of the step (3) be 75-95%. According to the present invention, the catalytic cracking diesel oil can be used as the raw material so as to achieve the high yield production of the high density jet fuel meeting the GJB1603 6# jet fuel standard.

Description

technical field [0001] The present invention relates to a method of producing jet fuel and, in particular, to a method of treating hydrocarbon oils in the presence of hydrogen to produce jet fuel. Background technique [0002] High-density jet fuel, also known as high-density jet fuel, is a type of jet fuel with high density (generally 0.835g / cm 3 Above), high volume calorific value (generally 35.8MJ / m 3 above) jet fuel. Compared with ordinary jet fuel (the density is generally 0.77-0.81g / cm 3 ) compared with high-density jet fuel can increase the calorific value per unit volume of the fuel. 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 780kg / m 3 (Volume calorific value is about 33×10 3 M...

Claims

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Application Information

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IPC IPC(8): C10G67/02
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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