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Method for producing diesel by hydrogenating anthrancene oil

A diesel and anthracene oil technology, applied in the field of coal chemical industry, can solve the problems of failing to meet the national standard requirements, and achieve the effects of prolonging life and increasing cetane number

Inactive Publication Date: 2011-03-30
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, anthracene oil hydrogenation to diesel oil adopts one-stage series hydrogenation or two-stage hydrogenation. For example, Chinese patents: a method for hydrocracking anthracene oil (200610059031.X) and a method for hydrogenation conversion of anthracene oil (200610067501.7) disclose The series process of hydrogen refining and hydrocracking, but the cetane number of the hydrogenated diesel product produced by the series process is 35-42, which does not meet the national standard requirements (the standard cetane number of -20# low-condensation light diesel oil in GB252-2000 greater than 45)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. After the mixed anthracene oil is heated and dehydrated, it is mixed with dephenolized phenolic oil and heavy washing oil at a volume ratio of 8.5:0.5:1.0 and then mixed into the raw material oil buffer tank. The raw material oil buffer tank is used as fuel gas (by-product petroleum gas) gas seal up.

[0040] The mixed anthracene oil density 1.15g / cm 3 , Distillation range 220~510℃; Density of the dephenolized phenol oil is 0.95~0.98g / cm 3 , distillation range 170~240℃; density of the heavy wash oil is 1.05~1.07g / cm 3 , Distillation range 260 ~ 320 ℃.

[0041] 2. After the raw oil from the raw oil buffer tank is pressurized to 15MPa by the hydrogenation feed pump, it is mixed with hydrogen at a volume ratio of hydrogen to oil ratio of 1500:1, and heated by the reaction feed heating furnace after heat exchange to 300°C To 360 ° C, enter the pre-hydrogenation reactor and react with the refined catalyst (FF26). The pre-hydrogenation reactor is equipped with a protec...

Embodiment 2

[0049] 1. After the mixed anthracene oil is heated and dehydrated, it is mixed with dephenolized phenolic oil and heavy washing oil at a ratio of 8.5:0.5:1.0 and then mixed into the raw material oil buffer tank. The raw material oil buffer tank is sealed with fuel gas (by-product petroleum gas) .

[0050] The mixed anthracene oil density 1.15g / cm 3 , Distillation range 220~510℃; Density of the dephenolized phenol oil is 0.95~0.98g / cm 3 , Distillation range 170 ~ 240 ℃. The density of the heavy washing oil is 1.05~1.07g / cm 3 , Distillation range 260 ~ 320 ℃.

[0051] 2. After the raw oil from the raw oil buffer tank is pressurized to 15MPa by the hydrogenation feed pump, it is mixed with hydrogen at a hydrogen-oil ratio of 1500:1, and then heated to 300°C by the reaction feed heating furnace. 380°C, enter the pre-hydrogenation reactor to react with the refined catalyst. The pre-hydrogenation reactor is equipped with a residual oil hydrodemetallization catalyst (FZC) protec...

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Abstract

The invention belongs to the technical field of coal chemical industry, particularly relating to a method for producing diesel by hydrogenating anthrancene oil. The diesel produced by the method of the invention has high cetane number, which meets a national standard. The method of the invention is as follows: A, the anthrancene oil, light distillate oil and heavy absorber oil are mixed to obtain mixed oil; B, the mixed oil and hydrogen are mixed and reacted for pre-hydrogenation; C, the hydrogen is supplemented to the pre-hydrogenated product in step B and then the hydrogenation is carried out again, the unreacted hydrogen is separated from reaction effluent, and the separation of oil-water-gas is carried out to obtain oil liquid; D, the oil liquid in step C is rectified to obtain diesel fraction; E, the diesel fraction is mixed with the hydrogen and then enters an upgrading reactor to react, the unreacted hydrogen is separated from the reaction effluent, and the separation of oil-water-gas is carried out again to obtain upgraded diesel; and F, a cetane number improver is added in the upgraded diesel to obtain the diesel. By using the method, the jam of a pipeline caused by anthrancene oil crystals can be avoided, thereby prolonging the service life of a catalyst; and the prepared product meets national standard requirements.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a method for preparing diesel oil through hydrogenation of anthracene oil. Background technique [0002] At present, anthracene oil hydrogenation to diesel oil adopts one-stage series hydrogenation or two-stage hydrogenation. For example, Chinese patents: a method for hydrocracking anthracene oil (200610059031.X) and a method for hydrogenation conversion of anthracene oil (200610067501.7) disclose The series process of hydrogen refining and hydrocracking, but the cetane number of the hydrogenated diesel product produced by the series process is 35-42, which does not meet the national standard requirements (the standard cetane number of -20# low-condensation light diesel oil in GB252-2000 greater than 45). In addition, the aforementioned two patented methods are easy to block the process pipeline in production practice. The inventor of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/04C10G67/02C10L1/23C10L10/12
Inventor 罗义文方懿张初永李应海刘燕
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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