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Hydrofining process integration method

A technology of hydrofining and combined process, which is applied in the direction of refined hydrocarbon oil and petroleum industry, etc. It can solve problems such as difficulty in use, achieve the effect of reducing operation, good application prospects, saving one-time investment equipment and equipment and land occupation

Active Publication Date: 2009-06-03
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

[0007] Although this method proposes a method for multiple hydrogenation units to share a circulation system, this method is only applicable to the case where the hydrogen partial pressure of the hydrogenation reaction is the same. For the current diesel hydrotreating reaction, the hydrogen partial pressure is mostly higher than that of kerosene hydrogenation. Difficulties in using this method

Method used

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Embodiment 1

[0033] The 600,000 tons / year aviation kerosene hydrofining unit of an oil refinery and the 4.1 million tons / year diesel hydrofining unit form a combined unit.

[0034] After the feedstock oil of the aviation kerosene hydrorefining unit is filtered, heat-exchanged step by step, heated up, and boosted, it enters the heating furnace for heating, with a temperature of 245℃ and a pressure of 3.3MPa; the hot flue gas produced by the heating furnace enters the diesel through the flue The waste heat recovery system of the hydrorefining unit performs heat recovery; the raw oil is mixed with hydrogen and enters the hydrorefining reactor to carry out chemical reactions such as mercaptan removal. The reaction temperature is 245℃, the reactor inlet pressure is 2.7MPa, and the reactor inlet hydrogen oil Ratio ≥50, the hydrogen used comes from the first stage outlet of the supplementary hydrogen compressor of the diesel hydrofining unit in the combined unit, and the hydrogen is mixed with the fe...

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Abstract

The invention provides a hydrofining process integration method, which comprises: (1) a jet fuel hydrofining device is not provided with a hydrogen gas compressor and uses hydrogen from other hydrofining device which is arranged by a hydrogen pipe network or combination; hydrogeneous gas obtained by hydrogenation reaction enters into the other hydrofining device; (2) the product of the jet fuel hydrofining device - stripping tower uses hot oil of the other hydrofining device as heat source to strip air. Aiming at the characteristic that the jet fuel hydrofining device often makes up a combination unit with the other hydrofining device, the jet fuel hydrofining device has small relative handing capacity and low hydrogen consumption, the method rationally uses devices and heat energy resources of the combination unit, optimizes flow proposal of the jet fuel hydrofining device, and has the advantages of conserving energy, lowering consumption, reducing investment outlay, etc.

Description

Technical field [0001] The invention relates to a process method for hydrofining in crude oil processing, in particular to a process method combining aviation kerosene hydrofining and diesel hydrofining. Background technique [0002] Aviation kerosene hydrogenation is a common hydrogenation refining process in petroleum refining, and the hydrogen process and heat exchange process are usually set independently. [0003] The existing aviation kerosene hydrogenation process is divided into a one-pass process and a hydrogen circulation process. For the one-pass process, the hydrogen comes from a hydrogen pipe network of 2.0~3.0Mpa, is mixed with the raw oil, heat exchanged, heated to the temperature required for the reaction, enters the hydrogenation reactor, and the reacted product enters the gas-liquid separation after heat exchange The hydrogen is discharged from the top of the separator. For the hydrogen circulation process, the supplementary hydrogen comes from the 1.0-1.2Mpa hy...

Claims

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Application Information

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IPC IPC(8): C10G45/00
Inventor 李浩孙丽丽郭志雄薛楠潘伟吴德飞
Owner CHINA PETROCHEMICAL CORP
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