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Diesel oil deep-hydro-desulfurizing-dearomatizing method

A technology of deep hydrogenation and diesel oil, which is applied in refining to remove heteroatoms, etc., can solve the problems of unsuitable refining equipment, complex equipment structure, and difficulty in production and maintenance operation control.

Inactive Publication Date: 2004-04-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some other exothermic reaction processes in the chemical industry, the commonly used cooling method is internal heat exchange, etc., but this method makes the equipment structure complex, making maintenance and operation control difficult, and is not suitable for large-scale oil refining units

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0011] Embodiment 1~5 and comparative example 1~3

[0012] This test mainly investigates the hydrogenation effect and stability of the hydrogenation process of the present invention and the existing countercurrent hydrogenation process. Take diesel desulfurization and dearomatization as an example. The physical and chemical properties of the catalyst used in this test are shown in Table-1, and the properties of the feedstock oil are shown in Table-2. In this test, the hydrogenation reaction was carried out on a continuous test device. The operating conditions are hydrogen oil (feed) volume ratio: 300, reaction pressure: 6.0MPa, feed oil inlet temperature: 360°C, feed space velocity: 1.5h -1 . The catalyst in the embodiment is: non-precious metal catalyst (A): precious metal catalyst (B) (V: V) = 55: 45, and the non-precious metal catalyst (A) is loaded on the upper layer of the precious metal catalyst (B). Examples are shown in Table-3, and comparative exa...

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PUM

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Abstract

The present invention relates to a diesel oil counter-current overhydro-desulfurizing and dearenizing method. The lies in that it uses low-temperature diesel oil fraction, specially the diesel oil fraction obtained by cooling said invented liquid-phase product as cooling raw material of reaction system. As compared with existent technology said invention can effectively regulate the gas-liquid flow distribution in the diesel oil counter-current hydrogenation treatment reactor, and can effectively reduce flow rate of material flow which is easy to produce flooding area, can make equipment operation more stable and can effectively raise product quality.

Description

1. Technical field [0001] The invention relates to a process method for hydrogenation treatment of hydrocarbons, in particular to a method for deep hydrogenation desulfurization and dearomatization of gas, liquid and solid three-phase diesel oil. 2. Background technology [0002] At present, the diesel hydrogenation process mostly adopts a fixed-bed hydrogenation process in which hydrogen and hydrocarbon raw materials flow side by side, contact with the catalyst bed and carry out catalytic reaction, but the hydrogen sulfide, ammonia and hydrocarbons generated during the reaction process are small. Molecules will have a greater inhibitory effect on the further reactions of the process, such as desulfurization, denitrogenation, aromatics saturation and hydrocracking, which will reduce the reaction rate. Therefore, the gas-liquid countercurrent hydrogenation process has increasingly become the focus of research in the field of petroleum refining. This process can increase the h...

Claims

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Application Information

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IPC IPC(8): C10G45/02
Inventor 韩保平方向晨曾榕辉晋梅孙洪江宋若霞
Owner CHINA PETROLEUM & CHEM CORP
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