Method for producing aviation kerosene and co-producing clean fuels from coal tar

A technology for aviation kerosene and low-temperature coal tar, applied in the field of coal tar hydrogenation, can solve the problems of high hydrogen consumption, low yield and high raw material cost in deoxygenation reaction, and achieve the effects of low cost, reduced hydrogen consumption and low freezing point

Pending Publication Date: 2020-11-24
NORTHWEST UNIV(CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] All of the above patents can produce No. 3 jet fuel that meets the standards, but there are problems such as high raw material cost, low yield, high hydrogen consumption in the deheteroatom deoxygenation reaction, and by-products need to be processed to produce gasoline and diesel. Therefore, it is necessary to find low-cost raw materials. , Reasonable and reliable process to produce No. 3 jet fuel

Method used

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  • Method for producing aviation kerosene and co-producing clean fuels from coal tar
  • Method for producing aviation kerosene and co-producing clean fuels from coal tar
  • Method for producing aviation kerosene and co-producing clean fuels from coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In low-temperature coal tar as the raw material, often under reduced pressure distillation cut 200 ℃ ~ 400 ℃ fraction, and the addition amount of 40wt% high temperature coal tar anthracene oil complex segment, to obtain purified raw material, mixed with hydrogen in the hydrofining reactor, followed by purification of commercial hydrogenation protecting agent and a catalyst bed temperature of 380 deg.] C in the hydrogenation, pressure of 10 MPa or, the hydrogen oil 1200:1 volume ratio, the volume of the liquid space velocity was 0.4h -1 , Hydrorefining reaction, the resulting product was saturated deep hydrogenation reactor, hydrogenation of doing business with a saturation catalyst bed, at a temperature of 420 ℃, the hydrogenation pressure is 14MPa, the hydrogen oil ratio 1500:1 volume, liquid volume space velocity of 0.3h -1 , Saturated depth hydrogenation reaction, the resulting product is used in the hydroisomerization reactor, with business hydroisomerization catalyst b...

Embodiment 2

[0046] Coal tar as the raw material to neutralize the low temperature, vacuum distillation process is often cut -1 , A hydrotreating reactor in the hydrogenation reactor is saturated in depth hydrotreating reactor product business with saturated deep hydrogenation catalyst bed at a temperature of 420 ℃, the hydrogenation pressure is 14MPa, the hydrogen oil ratio was 1500 by volume :1, the volume of the liquid space velocity was 0.3h -1 , Saturated depth hydrogenation reaction, the resulting product is used in the hydroisomerization reactor, with business hydroisomerization catalyst bed, at a temperature of 360 deg.] C, a pressure 8MPa hydrogenation, the hydrogen oil volume ratio 1100:1, liquid space velocity of 0.5h -1 Hydroisomerization reaction, the resulting product of the fractionator, fractionation obtained 3 jet fuel, gasoline and diesel products.

[0047] After analysis, the No. 3 of the present embodiment, jet fuel yield of 65wt%

Embodiment 3

[0049] In low-temperature coal tar as the raw material, often under reduced pressure distillation cut 200 ℃ ~ 400 ℃ fraction, and the addition amount of 35wt% high temperature coal tar anthracene oil complex segment, to obtain a purified material, the hydrogen mixed in the hydrofining reactor, followed by purification of commercial hydrogenation protecting agent and a catalyst bed temperature of 380 deg.] C in the hydrogenation, pressure of 10 MPa or, the hydrogen oil 1200:1 volume ratio, the volume of the liquid space velocity was 0.4h -1 , A hydrotreating reactor in the hydrogenation reactor is saturated in depth hydrotreating reactor product business with saturated deep hydrogenation catalyst bed at a temperature of 420 ℃, the hydrogenation pressure is 14MPa, the hydrogen oil ratio was 1500 by volume :1, the volume of the liquid space velocity was 0.3h -1 , Saturated depth hydrogenation reaction, the resulting product is used in the hydroisomerization reactor, with business hyd...

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Abstract

The invention relates to a method for producing aviation kerosene and co-producing clean fuels from coal tar. The medium-low-temperature coal tar is used as a raw material, heavy ends are selected, acertain proportion of high-temperature coal tar anthracene oil or anthracene oil generated from coal liquefaction is compounded, a commercial protective agent, a refining agent, a saturant and an isomerism catalyst are adopted, the aviation kerosene is produced through a hydrofining-deep hydrogenation saturation-hydroisomerization three-stage coupling hydrogenation system, and naphtha and diesel oil products can be obtained through product fractionation. Compared with a traditional technology, the method for producing the aviation kerosene and co-producing the clean fuels from the coal tar hasthe advantages that the heavy ends are fully used, the problem that heavy ends are mostly used for producing low-value-added products and for being exported directly can be solved to a certain extent, and high-value-added use of the anthracene oil is improved. By adopting the three-stage coupling hydrogenation system and by adopting a specific hydrofining catalyst, an S heteroatom removal rate, an N heteroatom removal rate and an O heteroatom removal rate can all reach 95% or above. By means of the method for producing the aviation kerosene and co-producing the clean fuels from the coal tar,in the premise of transforming the heavy ends into the aviation kerosene furthest, certain amounts of the naphtha and diesel oil products are co-produced, and hydrogen consumption is reduced at the same time, so that the cost is low.

Description

Technical field [0001] The present invention relates to coal tar hydrogenation technology, and particularly relates to a method for the production of low-temperature coal tar as the raw material of gasoline and diesel aviation kerosene cogeneration. Background technique [0002] With the continuous improvement of my country's aviation industry to pursue, increasing the area of ​​defense and national defense radius, increasing the strategic and tactical aviation aircraft demand, requiring institutions with the ability to better aircraft design, engine design capability and high performance fuel design capabilities, development of new high-performance fuel is the source of our power to protect aviation industry to continue moving forward. No. 3 jet fuel which is the main driving force of my country's jet engine aviation fuel, but the class No. 3 jet fuel is a major source of oil resources, and the kerosene fraction accounted for only 4% to 8% of the total crude oil, therefore, as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/08C10L1/04
CPCC10G65/043C10G65/08C10G2300/202C10G2400/02C10G2400/04C10L1/04C10L2270/04
Inventor 田育成李冬刘杰田丰范晓勇刘介平董环郭青朱永红周秋成杜崇鹏
Owner NORTHWEST UNIV(CN)
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