System and method for preparing high-octane gasoline, jet fuel, and naphthenic base oil from full-hydrogen coal tar

A high-octane gasoline and naphthenic base oil technology, which is applied in chemical instruments and methods, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as inability to make full use of resources, low cetane number, and large investment

Active Publication Date: 2017-05-03
王树宽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the hydrorefining process effectively prolongs the operation cycle through catalyst grading and process control, due to the complexity of the coking precursors of coal tar, the rapid rise in bed pressure of the first reactor for tar refining affects the operation cycle. Deep refining, hydrogenation isomerization, and post-refining are divided into two stages, and high-pressure equipment such as circulating hydrogen compressors, heating furnaces, high / low fractionation, and high-pressure feed pumps are added, resulting in excessive investment and high operating costs.
At the same time, the cut 180-280 ℃ after hydrofining is used as diesel oil, the freezing point is lowered, but the cetane number is low, and it cannot meet the national V diesel oil standard
[0008] Patent 201310103189.2 The method for producing fuel oil and lubricating oil base oil by hydrogenation of full fraction coal tar can produce naphthenic lubricating oil base oil with high viscosity index while producing fuel oil, but the product solution is limited and cannot be based on the market Make the best use of its own characteristics

Method used

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  • System and method for preparing high-octane gasoline, jet fuel, and naphthenic base oil from full-hydrogen coal tar
  • System and method for preparing high-octane gasoline, jet fuel, and naphthenic base oil from full-hydrogen coal tar
  • System and method for preparing high-octane gasoline, jet fuel, and naphthenic base oil from full-hydrogen coal tar

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Experimental program
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Effect test

Embodiment 1

[0068] In the system of this embodiment, the output port of the coal tar refining device 1 is connected to the input port of the deep refining of distillate oil, isomerization depressurization and post-refining device 4 through the intermediate tank 3 of medium and low temperature distillate oil and the intermediate tank 2 of high temperature distillate oil respectively. Pass.

[0069] The method for preparing high-octane gasoline, jet fuel and naphthenic base oil by adopting above-mentioned system is realized by following steps:

[0070] (1) Coal tar refining

[0071] After deslagging, dehydration, and desalination pretreatment, the whole distillate medium-low temperature coal tar is heated to 220°C by the tar heating furnace 1-1 after hydrogen mixing, and then enters the tar primary reactor 1-2 and the tar heat exchanger 1- 3. Tar secondary reactor 1-4, tar tertiary reactor 1-5, generated oil high pressure separator 1-6, generated oil atmospheric fractionation tower 1-7, ge...

Embodiment 2

[0098] In the system of this embodiment, the output port of the coal tar refining device 1 is connected to the input port of the deep refining of distillate oil, isomerization depressurization and post-refining device 4 through the intermediate tank 3 of medium and low temperature distillate oil and the intermediate tank 2 of high temperature distillate oil respectively. Pass.

[0099] The method steps of adopting above-mentioned system to prepare high-octane gasoline, jet fuel and naphthenic base oil are as follows:

[0100] (1) Coal tar refining

[0101] After pretreatment of deslagging, dehydration and desalination, the whole distillate medium-low temperature coal tar and the hydrogen-mixed raw material are heated to 260°C by the tar heating furnace 1-1, and then enter the tar primary reactor 1-2 and the tar heat exchanger in turn 1-3, tar secondary reactor 1-4, tar tertiary reactor 1-5, produced oil high pressure separator 1-6, produced oil atmospheric fractionation tower...

Embodiment 3

[0128] In the system of this embodiment, the output port of the coal tar refining device 1 is connected to the input port of the deep refining of distillate oil, isomerization depressurization and post-refining device 4 through the intermediate tank 3 of medium and low temperature distillate oil and the intermediate tank 2 of high temperature distillate oil respectively. Pass.

[0129] Adopt above-mentioned system to prepare high-octane gasoline, jet fuel and naphthenic base oil method steps as follows:

[0130] (1) Coal tar refining

[0131] After deslagging, dehydration, and desalination pretreatment, the whole distillate medium-low temperature coal tar is heated to 240°C by the tar heating furnace 1-1 after hydrogen mixing, and then enters the tar primary reactor 1-2 and the tar heat exchanger 1- 3. Tar secondary reactor 1-4, tar tertiary reactor 1-5, generated oil high pressure separator 1-6, generated oil atmospheric fractionation tower 1-7, generated oil vacuum fraction...

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Abstract

The invention relates to a system and method for preparing high-octane gasoline, aviation kerosene and naphthenic base oil with total-hydrogen-type coal tar. The system is formed by a coal tar refining device, a distillate oil deep refining, isomerization-visbreaking and post-refining device and a naphtha dehydrogenizing and aromatic extraction device. The method includes the steps that coal tar serves as a raw material, is subjected to hydrorefining, deep refining, isomerization visbreaking and post-refining treating, and then is subjected to a naphtha dehydrogenizing technology and an aromatic extraction technology, and the high-octane gasoline, the aviation kerosene and the naphthenic base oil are obtained. Meanwhile, a mass of hydrogen is generated to serve as supplemented hydrogen of coal tar hydrogenation, the obtained product oil is good in quality, and after detecting is carried out according to the national standard, various detected indexes meet the national standard.

Description

technical field [0001] The invention belongs to the field of coal tar hydrogenation, and in particular relates to the preparation of high-octane gasoline and aviation fuel by hydrogenation of full-fraction medium-low temperature coal tar, partial medium-low temperature coal tar fraction oil, high-temperature coal tar fraction oil or anthracene oil before 510°C and naphthenic base oil process systems, catalyst grading schemes and processing methods. Background technique [0002] Coal tar is a liquid product of coal pyrolysis, containing a large amount of polycyclic and heterocyclic aromatic hydrocarbons such as oxygen, nitrogen, sulfur, and metals, and colloids and asphaltenes account for more than 50%, nitrogen content exceeds 1.2%, and oxygen exceeds 6 %, the molecular structure and composition are complex, and the content of metal ions, especially iron, calcium, and magnesium ions, is high. Coal tar hydrogenation technology is to remove metals, sulfur, nitrogen and other c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00B01J27/19B01J27/135B01J23/888B01J29/85B01J23/62
CPCB01J23/628B01J23/8885B01J27/135B01J27/19B01J29/005B01J29/44B01J29/85C10G67/00C10G2400/02
Inventor 杨占彪王树宽
Owner 王树宽
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