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Method for producing rocket kerosene by coal tar

A coal tar and rocket technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., to achieve the effect of low raw material, excellent performance and improved selectivity

Active Publication Date: 2015-07-22
GUANGHAN TIANZHOU AERO ENGINE FUEL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no high-selectivity conversion of coal tar into cis-decalin to obtain rocket kerosene production methods

Method used

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  • Method for producing rocket kerosene by coal tar
  • Method for producing rocket kerosene by coal tar
  • Method for producing rocket kerosene by coal tar

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Step (1): The hydrocracking catalyst Z-863 is broken into small particles with a particle diameter of 50 μm, mixed with the 300° C.-450° C. fraction of coal tar, and the addition amount of the catalyst is 1.5% (weight). The 300°C-450°C fraction mixed with the catalyst is pumped into the fluidized bed reactor with a high-pressure pump, and mixed with hydrogen before the raw material enters the reactor. Raw material coal tar and hydrogen at a reaction temperature of 480°C, a pressure of 8MPa, and a liquid hourly space velocity of 0.5h -1 , Hydrogen oil volume ratio under the condition of 2000 to react. After gas-liquid and liquid-solid separation of the hydrocracking reaction product, hydrocracking product oil is obtained, and its properties are shown in Table 3.

[0055] Step (2): Mix the hydrocracking product oil obtained in step (1) with the 190°C-300°C fraction of coal tar at a ratio of 2:1, and use it as a fixed-bed hydrorefining reaction feed. The self-made cataly...

Embodiment 2

[0062] Step (1): Same as step (1) in Example 1.

[0063] Step (2): same as step (2) of Example 1, wherein the change is the loading volume of the catalyst, the purpose is to reduce the fluid linear velocity to investigate the reaction effect under different linear velocity. The self-made catalyst 1 was broken into 40-60 mesh catalyst particles, which were packed in a fixed-bed hydrogenation reactor with a loading volume of 70 mL. Reaction condition is the same as embodiment 1 step (2). After calculation, the linear velocity of oil flow under this condition is 1mm / s, and the actual linear velocity of hydrogen under the reaction pressure is 2.6mm / s.

[0064] Step (3): Fractional distillation of the hydrorefined product oil in step (2) to obtain fractions at 190-280° C., the properties of which are shown in Table 4.

[0065] As shown in Table 4, the density of the 190-280°C distillate of hydrorefined product oil is 0.832kg / m 3 , the volumetric calorific value is 35.17MJ / L, and...

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Abstract

The invention provides a method for producing rocket kerosene by coal tar. The method comprises the following steps: cutting a fraction with the boiling point of 190-300 DEG C from the coal tar; hydrorefining the fraction with the boiling point of 190-300 DEG C in a fixed bed to obtain a hydrorefined product, wherein the reaction conditions of hydrorefining are that the reaction temperature is 300-400 DEG C, the reaction pressure is 8-20 MPa, the liquid hour space velocity is 0.2-2.0 h<-1>, the volume ratio of hydrogen to oil is (1000-4000):1, the linear rate of flow of an oil product is above 0.15 mm / s, and the linear rate of flow of gas in an actual state is above 2 mm / s under the reaction pressure; fractionating the hydrorefined product and collecting a fraction with the boiling point of 190-280 DEG C to obtain a final product. According to the method provided by the invention, the coal tar can be highly and selectively converted into the rocket kerosene, the produced rocket kerosene has a higher calorific value and specific gravity, and the content of cis-decaline is high.

Description

technical field [0001] The invention relates to the field of coal tar processing, in particular to a method for producing rocket kerosene from coal tar. Background technique [0002] Rocket kerosene usually requires high density and specific impulse, while specific impulse and calorific value have a strong positive correlation. Therefore, the development of kerosene with high density and high calorific value is a hot spot in the field of rocket fuel. [0003] With the decrease of oil resources in the world, the protection of national defense security from the energy point of view has attracted more and more attention from all countries, among which the development of alternative energy technologies based on coal-based liquid fuels has gradually received attention. [0004] Coal-based liquid fuels can be divided into three categories: one is coal direct liquefied oil, the other is coal indirect liquefied oil, and the third is coal tar fuel oil. The investment of coal direct...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 吴建明
Owner GUANGHAN TIANZHOU AERO ENGINE FUEL TECH CO LTD
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