Low energy consumption and long period hydrogenation process for producing diesel oil

A long-cycle, low-energy-consumption technology, applied in hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of high energy consumption and affecting the operation cycle of the device, etc.

Active Publication Date: 2020-06-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] To sum up, in the prior art, since diesel raw materials contain a large amount of sulfur in the form of organic sulfur, the hydrodesulfurization process requires a certain reaction temperature, especially after long-term operation in order to maintain the removal rate of sulfur. Temperature raising operation consumes a lot of energy and affects the operation cycle of the device

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  • Low energy consumption and long period hydrogenation process for producing diesel oil
  • Low energy consumption and long period hydrogenation process for producing diesel oil
  • Low energy consumption and long period hydrogenation process for producing diesel oil

Examples

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Embodiment Construction

[0042] The following examples will further illustrate the process and effect of the hydrogenation process of the present invention with low energy consumption and long-term production of ultra-low sulfur diesel oil, wherein the first hydrogenation reaction zone selects a hydrogenation reactor, and the second hydrogenation reaction zone selects a hydrogenation reactor Hydrogenation reactor, but the following examples do not constitute a limitation to the method of the present invention.

[0043] Such as figure 1 The specific implementation of the hydrogenation process for the production of ultra-low sulfur diesel oil with low energy consumption and long period of the present invention is as follows: the heavy distillate feedstock oil 1 is pressurized by the first feedstock oil pump to obtain the pressurized heavy distillate feedstock oil 3, The heavy distillate feed oil 3 after pressing continues to mix with circulating hydrogen and then enters the first hydrogenation reactor 4...

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Abstract

The invention discloses a low energy consumption and long period hydrogenation process for producing ultralow-sulfur diesel oil. The hydrogenation process comprises the following steps: (a) fractionating diesel raw oil to obtain two fractions, namely a light fraction and a heavy fraction; (b) carrying out a hydro-desulfurization reaction on the heavy fraction diesel raw oil obtained in the step (a) in a first hydrogenation reaction zone under the action of a hydro-desulfurization catalyst; (c) reacting the material flow obtained in the step (b) with the light fraction diesel raw oil obtained in the step (a) in a second hydrogenation reaction zone under the action of a hydro-desulfurization catalyst; and (d) separating the material flow obtained in the step (c) into a gas phase and a liquidphase, and separating the liquid phase to obtain gas, naphtha and diesel oil products. The hydrogenation process has the advantages of low energy consumption, long operation period and the like.

Description

technical field [0001] The invention belongs to a hydrogenation process in oil refining technology, in particular to a hydrogenation process for producing diesel oil with low energy consumption and long period. Background technique [0002] At present, the energy on a global scale mainly comes from fossil energy, among which petroleum is the most important source of motor fuel. With the continuous development of the world economy and the increasingly stringent environmental regulations, it is necessary to produce a large amount of light and clean motor fuel, all of which require the improvement and improvement of the existing refining technology. As an important motor fuel, diesel quality requirements are getting higher and higher, especially for indicators such as sulfur content, density, cetane number and polycyclic aromatic hydrocarbons. [0003] Diesel hydrogenation technology is the most important means to improve the quality of diesel products. CN102465021A discloses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/202C10G2300/4006C10G2300/4012C10G2400/04
Inventor 刘涛李扬郭兵兵牛世坤徐彤刘继华乔凯
Owner CHINA PETROLEUM & CHEM CORP
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