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A diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system

A hydrogenation reaction and deep desulfurization technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc., can solve the problems of low sulfur adsorbent, easy penetration, complex regeneration system, etc.

Active Publication Date: 2022-02-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the method of adsorption desulfurization to achieve deep desulfurization, but there are many problems in adsorption desulfurization, such as low sulfur capacity of the adsorbent, easy penetration, frequent regeneration, complex regeneration system, and high regeneration energy consumption.
[0007] To sum up, it is difficult to achieve deep desulfurization or ultra-deep desulfurization of diesel oil with the existing liquid-phase hydrogenation process, and in non-hydrodesulfurization methods, such as oxidative desulfurization methods, there are oxidant residues in the oil that affect the oxidation stability of desulfurized oil The extraction desulfurization method introduces new solvents into the system and the recovery rate of oxidative desulfurization oil is low; the adsorption desulfurization has problems such as low adsorption sulfur capacity and short service life of the adsorbent, which make these non-hydrogenation deep desulfurization methods in There are many problems in the actual application process, and it is difficult to realize industrialization

Method used

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  • A diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system
  • A diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system
  • A diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system

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Effect test

Embodiment 1

[0051] Attached figure 1 The method, wherein the amount of hydrogen in the hydrogenation reactor is 0.405% of the mass of the raw material oil (the sum of fresh raw material oil and circulating oil), and the reaction conditions of the fixed bed hydrogenation reactor are as follows: the reaction temperature is 310-355 ℃, the reaction pressure is 6.0MPaG, and the liquid hourly volume space velocity is 4.5h -1 . The sulfur content in the feedstock oil after fixed-bed hydroupgrading was 576 μg / g.

[0052] The feedstock oil after fixed-bed hydrotreating enters the deep hydrodesulfurization unit, which includes three “U-shaped” tubular reactors connected in series, in which the membrane tube micro-disperser disperses hydrogen into 50nm hydrogen bubbles, nano The amount of hydrogen injected per micron is 0.128% of the mass of the raw oil ("U-shaped" tubular reactor feed); the reaction conditions in the hydrogenation reaction section are as follows: the reaction temperature is 310-3...

Embodiment 2

[0055] Attached figure 1 The method, wherein the amount of hydrogen in the hydrogenation reactor is 0.389% of the mass of the raw material oil (the sum of fresh raw material oil and circulating oil), and the reaction conditions of the fixed bed hydrogenation reactor are as follows: the reaction temperature is 320-360 ℃, the reaction pressure is 6.0MPaG, and the liquid hourly volume space velocity is 5.0h -1 . The sulfur content in the feedstock oil after fixed-bed hydroupgrading was 355 μg / g.

[0056] The feedstock oil after fixed-bed hydrotreating enters the deep hydrodesulfurization unit, which includes five “U-shaped” tubular reactors connected in series in sequence, in which the membrane tube microdisperser disperses hydrogen into 500nm hydrogen bubbles, and the nano The amount of hydrogen injected per micron is 0.152% of the mass of raw oil ("U-shaped" tubular reactor feed); the reaction conditions in the hydrogenation reaction section are as follows: the reaction tempe...

Embodiment 3

[0059] Attached figure 1 The method, wherein the amount of hydrogen in the hydrogenation reactor is 0.402% of the mass of the raw material oil (the sum of fresh raw material oil and circulating oil), and the reaction conditions of the fixed bed hydrogenation reactor are as follows: the reaction temperature is 320-360 ℃, the reaction pressure is 6.0MPaG, and the liquid hourly volume space velocity is 5.0h -1 . The sulfur content in the feedstock oil after fixed-bed hydroupgrading was 47 μg / g.

[0060] The feedstock oil after fixed-bed hydrotreating enters the deep hydrodesulfurization device, which includes seven "U-shaped" tubular reactors connected in series, in which the membrane tube microdisperser disperses hydrogen into 50nm hydrogen bubbles, and the nano The amount of hydrogen injected per micron is 0.164% of the mass of the feedstock oil (feed to the "U-shaped" tubular reactor); the reaction conditions in the hydrogenation reaction section are as follows: the reaction...

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Abstract

The invention discloses a diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system. The ultra-deep desulfurization device consists of multiple "U-shaped" tubular reactors connected in series, and adjacent tubular reactors are connected through arc-shaped tubes; the shape of the tubular reactors is "U-shaped", including straight The pipe section and the bottom are connected to the horizontal section of the straight pipe sections on both sides; the diesel hydrogenation reaction system includes a fixed bed hydrogenation reactor and multiple "U-shaped" tubular reactors connected in series. The present invention can continuously generate H from the reaction process 2 S, NH 3 Wait for the gas to be removed from the reaction system, increase the hydrogenation reaction rate, maintain the continuous efficiency of the hydrogenation reaction process, and realize deep hydrodesulfurization and ultra-deep desulfurization.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and specifically relates to a diesel ultra-deep desulfurization device and a diesel hydrogenation reaction system. Background technique [0002] With the improvement of people's awareness of environmental protection and the increasingly stringent environmental regulations, the requirements for sulfur content in diesel are becoming more and more stringent. At present, the more advanced diesel hydrodesulfurization technology adopts the method of liquid-phase hydrogenation. The core of the theoretical basis is the solubility of hydrogen in liquid. High temperature and high pressure are the direct driving force for the solubility and dissolution rate of hydrogen. The higher the temperature / pressure, the The greater the solubility and dissolution rate, the more conducive to the hydrogenation reaction and the long-term operation of the catalyst. Compared with the traditional fixed-bed gas / liquid / ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/06C10G45/08
CPCB01J8/06C10G45/08C10G2300/202C10G2300/205C10G2400/04
Inventor 杨秀娜于淼阮宗琳王昊辰金平
Owner CHINA PETROLEUM & CHEM CORP
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