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Method and device for dissolving gas in liquid-phase circulating hydrodesulfurization system

A liquid-phase circulating hydrogenation and desulfurization system technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment, and can solve problems such as high cost, poor mixing effect, and complex system

Active Publication Date: 2013-10-16
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The primary technical problem to be solved by the present invention is to solve the problems of complex system, high cost and poor mixing effect in the existing hydrogenation oil-gas mixing process, and provide a new oil-gas mixing method

Method used

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  • Method and device for dissolving gas in liquid-phase circulating hydrodesulfurization system
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  • Method and device for dissolving gas in liquid-phase circulating hydrodesulfurization system

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Effect test

Embodiment 1

[0054] In a 200,000-ton / year liquid-phase circulation hydrogenation unit, the oil-gas mixing process is reformed according to the present invention.

[0055] Process flow:

[0056] Specific process such as figure 2 As shown, the raw material parameters are shown in Table 1 below, and the main operating conditions are shown in Table 2 below:

[0057] Table 1

[0058]

[0059] Table 2

[0060]

[0061] Technical effect:

[0062] Because the mixing effect of the pump improves the mixing degree of oil and gas before entering the reactor, and the recirculating hydrogen mixture material retains a certain reaction heat, which can greatly improve the hydrogenation reaction efficiency. Compared with other gas-liquid mixing methods, the gas-liquid mixing pump is used as a mixing method, and can also be used as a circulation pump in the system at the same time, which simplifies the system and saves costs. The adoption of this method can produce huge economic benefits.

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Abstract

The invention relates to a method and a device for dissolving gas in a liquid-phase circulating hydrodesulfurization system, and provides a method for dissolving gas in a liquid-phase circulating hydrodesulfurization system, which comprises the following steps of: introducing new hydrogen, raw oil and circulating saturated oil refluxed from a hydrogenation reactor into a gas-liquid mixing pump, and fully mixing under the strong turbulence state; introducing the mixed materials into a gas-liquid separation tank, collecting big bubbles, removing the big bubbles, and introducing the mixed materials into the hydrogenation reactor for hydrogenation; and introducing the circulating saturated oil refluxed from the hydrogenation reactor into the gas-liquid mixing pump again, mixing with the raw oil and the new hydrogen entering the gas-liquid mixing pump, and introducing the mixture into the hydrogenation reactor again. The invention also provides a device for dissolving gas in the liquid-phase circulating hydrodesulfurization system.

Description

technical field [0001] The invention belongs to the field of petrochemical industry and environmental protection, and relates to a method for optimizing and reforming the oil-gas mixing process link in the field of liquid-phase hydrogenation by adopting gas-liquid mixing pump technology, which is suitable for treating the liquid-phase circulating hydrogenation process. Specifically, the invention provides an optimization method and device for dissolving gas in a liquid-phase circulating hydrodesulfurization system. Background technique [0002] At present, the deep hydrotreating of diesel mainly adopts single-stage and two-stage process technologies of hydrogen circulation. These technologies have defects in investment costs and economic benefits, so it is urgent to develop diesel oil deep hydrogenation technology with low equipment investment and low operating costs. The liquid phase circulation hydrogenation technology does not need to set up a hydrogen circulation system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 王剑刚汪华林杨强沈其松吕文杰谢嘉李志明李琛
Owner EAST CHINA UNIV OF SCI & TECH
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