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A system device and method for liquid-phase hydrorefining

A system device, liquid-phase hydrogenation technology, applied in separation methods, hydrotreating processes, chemical instruments and methods, etc., can solve the problems of affecting the service life of catalysts, large diameter of hydrogen microbubbles, and reducing reaction efficiency, etc. Simple, low cost, enhanced effect of gas-liquid mixing and mass transfer process

Active Publication Date: 2022-07-12
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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  • A system device and method for liquid-phase hydrorefining
  • A system device and method for liquid-phase hydrorefining
  • A system device and method for liquid-phase hydrorefining

Examples

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 comprises a filtering 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 and is made of stainless steel, and a liquid filter device 2 whose filter element is a sintered filter element and is made of stainless steel; the gas filter device 1 and the liquid filter device 2 are independent of each other. connected to the mixing unit; the mixing unit includes a gas-liquid mixing device 3;

[0075] like figure 2As shown, the gas-liquid mixing device 3 includes a device casing 12, the two ends of the device casing 12 are provided with a liquid phase inlet 11 and a diffusion outlet 10, and the side wall of the device casing 12 is provided with a gas phase inlet 16, wherein the diffusion outlet 10 It incl...

Embodiment 2

[0084] The present embodiment provides a liquid-phase hydrorefining system device, 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 screen-type filter element and is made of brass, and a liquid filter device whose filter element is a screen-type filter element and is made of brass; the gas filter device and the liquid filter device are independent of each other. is connected to the mixing unit; the mixing unit includes a gas-liquid mixing device;

[0086] The gas-liquid mixing device comprises a device casing, both ends of the device casing are provided with a liquid phase inlet and a diffusion outlet, and a gas phase inlet is arranged on the side wall of the device casing, wherein the diffusion outlet comprises a trumpet-shaped diffusion channel and a diffusion outlet arranged in sequence. The outlet is arran...

Embodiment 3

[0095] The present embodiment provides a liquid-phase hydrorefining system device, 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 element is a pleated filter element and is made of titanium alloy and a liquid filter device whose filter element is a pleated filter element and is made of aluminum alloy; the gas filter device and the liquid filter device are independently connected with each other. The mixing units are connected; the mixing unit includes a gas-liquid mixing device;

[0097] The gas-liquid mixing device comprises a device casing, the two ends of the device casing are provided with a liquid phase inlet and a diffusion outlet, and the side wall of the device casing 12 is provided with a gas phase inlet 16, wherein the diffusion outlet comprises a trumpet-shaped diffusion outlet arranged in sequence. The channe...

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Abstract

The present invention provides a liquid-phase hydrorefining system device and a method thereof. The system device includes a filter unit, a mixing unit, a reaction unit, a condensation unit and a separation unit connected in sequence, and the filter unit includes a gas filter device and a liquid filter unit. A filter device, the gas filter device and the liquid filter device are independently connected with a mixing unit, the mixing unit includes a gas-liquid mixing device, and the gas-liquid mixing device can efficiently generate microbubbles of uniform size, so that the hydrogen gas in the liquid phase The solubility reaches supersaturation, and at the same time, a pseudo-homogeneous phase flow containing uniform size micro-bubbles is formed, which makes the gas-liquid mixing more efficient and uniform. The method of hydrorefining the raw oil in the system device enables hydrogen to efficiently participate in the hydrogenation reaction of the raw oil, reduces the reaction pressure, reduces the energy consumption and material consumption of the operation, and improves the desulfurization rate of the raw oil.

Description

technical field [0001] The invention relates to a gas-liquid two-phase mixing device and the technical field of hydrogenation, in particular to a liquid-phase hydrorefining system device and a method thereof. Background technique [0002] The gas-liquid two-phase mixing process widely exists in the production of petrochemical, fine chemical, wastewater treatment, etc. The gas-liquid mixing efficiency has an important influence on the reaction process. The essence of enhancing the 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-bubbles....

Claims

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Application Information

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Patent Type & Authority Patents(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