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A kind of gas phase hydrogenation desulfurization process method of diesel oil

A diesel oil and hydrogenation treatment technology, applied in refining to remove heteroatoms, etc., can solve the problems of high equipment investment cost, high reaction pressure, etc., and achieve the effect of high reaction pressure and high vaporization rate

Active Publication Date: 2017-06-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of high reaction pressure and high equipment investment cost in the existing diesel hydrotreating process, and provide a diesel hydrotreating process with high vaporization rate, low reaction pressure and large hydrogen-oil ratio operation to produce low-sulfur diesel oil craft

Method used

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  • A kind of gas phase hydrogenation desulfurization process method of diesel oil
  • A kind of gas phase hydrogenation desulfurization process method of diesel oil
  • A kind of gas phase hydrogenation desulfurization process method of diesel oil

Examples

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Effect test

Embodiment 1

[0035] In this example, the reaction temperature is 350℃ and the space velocity is 1.5h -1 Under the conditions, the hydrodesulfurization effect of reaction pressure 6MPa and reaction pressure 3MPa. The hydrogen-to-oil ratio selected for the high-pressure 6MPa process is 600:1. According to the established model, the vaporization rate of the selected raw materials and the vaporization factors of three typical sulfides under this condition are calculated. Calculate the results of the vaporization rate of the raw materials and the vaporization factors of three typical sulfides with the ratio of hydrogen to oil at a low pressure of 3MPa. According to the analysis of the thermodynamic properties of the raw materials at 350℃, 4,6-dimethyldibenzothiophene is used as the global sulfide Substitutes. Such as figure 2 , Make the reaction pressure 6MPa, hydrogen-oil ratio 600:1, the product of reaction pressure and 4,6-dimethyldibenzothiophene vaporization factor and reaction pressure 3M...

Embodiment 2

[0037] In this example, the reaction temperature is 350℃ and the space velocity is 1.5h -1 Under the conditions, the hydrodesulfurization effect of reaction pressure of 7MPa and reaction pressure of 3.5MPa. The hydrogen-to-oil ratio selected for the high-pressure 7MPa process is 600:1. According to the established model, the vaporization rate of the selected raw materials and the vaporization factors of three typical sulfides under this condition are calculated. Calculate the results of the vaporization rate of raw materials and the vaporization factors of three typical sulfides with the hydrogen-oil ratio under low pressure 3.5MPa. According to the analysis of the thermodynamic properties of raw materials at 350℃, 4,6-dimethyldibenzothiophene was used as a global sulfide substitute. Such as image 3 Under the conditions of reaction pressure of 7MPa and hydrogen-oil ratio of 600:1, the product of reaction pressure and 4,6-dimethyldibenzothiophene vaporization factor is equal to...

Embodiment 3

[0039] In this example, the reaction temperature is 350℃ and the space velocity is 1.5h -1 Under the conditions, the reaction pressure is 8MPa and the reaction pressure is 4MPa. The hydrogen-to-oil ratio selected for the high-pressure 8MPa process is 600:1. According to the established model, the vaporization rate of the selected raw materials and the vaporization factors of three typical sulfides under this condition are calculated. Calculate the results of the vaporization rate of the raw material and the vaporization factor of three typical sulfides with the hydrogen-oil ratio at a low pressure of 4MPa. According to the analysis of the thermodynamic properties of raw materials at 350℃, 4,6-dimethyldibenzothiophene was used as a global sulfide substitute. Such as Figure 4 , Make the reaction pressure 8MPa, hydrogen-oil ratio 600:1, the product of reaction pressure and 4,6-dimethyldibenzothiophene vaporization factor and reaction pressure 4MPa, hydrogen-oil ratio n conditions...

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Abstract

The invention discloses a method for hydrogenation treatment of diesel oil with high vaporization rate and low pressure and large hydrogen-to-oil ratio. Belonging to the technical field of diesel processing, the steps of the processing method of the present invention are: (1) analyzing the properties of processed diesel raw materials, establishing a suitable calculation model for the vaporization rate and determining calculation parameters according to the results; (2) calculating the raw material at a constant temperature T, hydrogen Oil ratio, the effect of pressure change on the vaporization rate of raw materials and typical sulfide vaporization factors under higher pressure conditions; (3) Calculate the influence of pressure changes on the vaporization rate of raw materials and typical sulfide vaporization factors under lower pressure conditions; (4) According to the thermodynamic properties of raw materials under the reaction temperature conditions under investigation, select alternative sulfides that can represent global sulfides; (5) Make the vaporization factors of alternative sulfides equal under high pressure and low pressure conditions, and then determine the hydrogen oil for low pressure diesel hydrogenation Compare.

Description

Technical field [0001] The invention relates to the technical field of diesel hydrotreating, in particular to a diesel hydrotreating process method under the condition of high vaporization rate. Background technique [0002] With the increasingly stringent environmental regulations, the production of low-sulfur diesel or even ultra-low-sulfur diesel has become a major problem faced by the refining industry in the new era. In addition, the world's crude oil is showing a trend of heavy and inferior quality. The quality of secondary processed products such as catalytic diesel (LCO) has declined, and the content of impurities such as sulfur has increased. Therefore, improving existing processes and developing new processes have become the focus of more and more attention. [0003] At present, the hydrotreating process is one of the most important means to produce clean oil products. Patent 201010508146.9 discloses a hydrotreating method for producing ultra-low sulfur diesel. It disso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/02
Inventor 柴永明刘晨光闫晓洋刘宾左萌李奕川赵晋翀杜健程杰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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