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Liquid phase hydrofining system device and method

A system device, liquid-phase hydrogenation technology, applied in separation methods, hydrotreating processes, chemical instruments and methods, etc., can solve the problems of high hydrogenation pressure, affecting the service life of catalysts, reducing reaction efficiency, etc.

Active Publication Date: 2021-09-10
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above method strengthens the liquid-phase hydrogenation process through the micro-interface, there are still the following deficiencies: first, the diameter of the hydrogen microbubbles in the diesel liquid phase is still large and the distribution is not uniform, and the hydrogenation pressure is high; second, a large number of bubbles in the catalyst bed The gap between the layers is easy to gather to produce a local liquid phase short circuit, which reduces the reaction efficiency and affects the service life of the catalyst

Method used

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  • Liquid phase hydrofining system device and method
  • Liquid phase hydrofining system device and method
  • Liquid phase hydrofining system device and method

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Experimental program
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Embodiment 1

[0073] This embodiment provides a system device for liquid-phase hydrotreating, such as figure 1 As shown, the system device includes a filter unit, a mixing unit, a reaction unit, a condensation unit and a separation unit connected in sequence;

[0074] The filter unit includes a gas filter device 1 whose filter element is a sintered filter element made of stainless steel and a liquid filter device 2 whose filter element is a sintered filter element made of stainless steel; the gas filter device 1 and the liquid filter device 2 are independent Ground is connected with mixing unit; Said mixing unit comprises gas-liquid mixing device 3;

[0075] Such as figure 2As shown, the gas-liquid mixing device 3 includes a device housing 12, the two ends of the device housing 12 are provided with a liquid phase inlet 11 and a diffusion outlet 10, and the side wall of the device housing 12 is provided with a gas phase inlet 16, wherein the diffusion outlet 10 Including trumpet-shaped di...

Embodiment 2

[0084] This embodiment provides a system device for liquid-phase hydrotreating, the system device includes a filter unit, a mixing unit, a reaction unit, a condensation unit and a separation unit connected in sequence;

[0085] The filter unit includes a gas filter device whose filter element is a filter element and made of brass and a liquid filter device whose filter element is a filter element and made of brass; the gas filter and the liquid filter are independent ground is connected with the mixing unit; the mixing unit includes a gas-liquid mixing device;

[0086] The gas-liquid mixing device includes a device housing, the two ends of the device housing are provided with a liquid phase inlet and a diffusion outlet, and the side wall of the device housing is provided with a gas phase inlet, wherein the diffusion outlet includes horn-shaped diffusion channels and The outlet provided on the device shell, the inner diameter of the diffusion channel increases continuously alon...

Embodiment 3

[0095] This embodiment provides a system device for liquid-phase hydrotreating, the system device includes a filter unit, a mixing unit, a reaction unit, a condensation unit and a separation unit connected in sequence;

[0096] The filter unit includes a gas filter device whose filter core is a folded filter element made of titanium alloy and a liquid filter device whose filter core is a folded filter element made of aluminum alloy; the gas filter device and the liquid filter device are independently connected with each other. The mixing unit is connected; the mixing unit includes a gas-liquid mixing device;

[0097] The gas-liquid mixing device includes a device housing, the two ends of the device housing are provided with a liquid phase inlet and a diffusion outlet, and the side wall of the device housing 12 is provided with a gas phase inlet 16, wherein the diffusion outlet includes trumpet-shaped diffusion outlets arranged in sequence. channel and the outlet arranged on th...

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Abstract

The invention provides a liquid phase hydrofining system device and method. The system device comprises a filtering unit, a mixing unit, a reaction unit, a condensation unit and a separation unit which are sequentially connected, the filtering unit comprises a gas filtering device and a liquid filtering device, the gas filtering device and the liquid filtering device are respectively and independently connected with the mixing unit, the mixing unit comprises a gas-liquid mixing device, the gas-liquid mixing device can efficiently generate microbubbles with uniform sizes, so that the solubility of hydrogen in a liquid phase reaches supersaturation, meanwhile, a quasi-homogeneous flow containing the microbubbles with the uniform sizes is formed, gas-liquid mixing is more efficient and uniform, and the gas-liquid mixing device is matched with a hydrogenation reactor with a regular void structure catalyst pore structure; and the raw oil hydrofining method carried out in the system device enables hydrogen to efficiently participate in a raw oil hydrogenation reaction, so that the reaction pressure is reduced, the operation energy consumption and material consumption are reduced, and the desulfurization rate of the raw oil is improved.

Description

technical field [0001] The invention relates to the technical field of a gas-liquid two-phase mixing device and hydrogenation, in particular to a liquid-phase hydrogenation refining system device and a method thereof. Background technique [0002] The gas-liquid two-phase mixing process widely exists in petrochemical, fine chemical, wastewater treatment and other production, and the gas-liquid mixing efficiency has an important impact on the reaction process. The essence of strengthening gas-liquid two-phase mixing is to increase the specific surface area of ​​the gas-liquid two-phase contact, thereby enhancing the mass transfer process at the phase interface. Microbubbles have the characteristics of large specific surface area, high gas holdup, stable existence, and fast dissolution rate, which can significantly enhance gas-liquid mixing and mass transfer efficiency. Usually, a gas-liquid mixing device is used to disperse the gas phase in the liquid phase to generate micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/00B01D35/01C10G67/14
CPCB01D36/003B01D36/006B01D36/001C10G67/14C10G2300/202Y02P30/20
Inventor 苏梦军吴青辛靖杨国明张海洪卢德庆陈禹霏王连英朱元宝宋宇韩龙年陈松
Owner CHINA NAT OFFSHORE OIL CORP