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Low-cost hydrogenation process method

A process method, low-cost technology, applied in the field of fixed-bed three-phase hydrogenation process

Inactive Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These patents are characterized by a high ratio of hydrogen to oil, so the hydrogen circulation link and the circulation hydrogen compressor are necessary

Method used

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Effect test

Embodiment 1

[0021] Gasoline feedstock was desulfurized by hydrotreating at 230°C, and the catalyst was FDS-4A catalyst developed and produced by Fushun Petrochemical Research Institute. The chemical hydrogen consumption of the reaction and the dissolved hydrogen in the system are tested first, and then the method process of the present invention is carried out. The reaction pressure is 3.0MPa, and the volumetric space velocity of the reaction raw material oil is 4h -1 . The volume ratio of hydrogen to oil is based on the reaction chemical hydrogen consumption plus twice the amount of dissolved hydrogen in the system, and the circulation ratio (circulation oil volume: fresh raw material volume) is 2:1. The reaction result is a desulfurization rate of 99.7%, which is basically equivalent to the reaction effect under the existing high hydrogen-to-oil ratio operating conditions, and the stability of the catalyst activity is equivalent to that under ordinary conditions.

Embodiment 2

[0029] Aviation coal is desulfurized by hydrotreating at 290°C, and the catalyst is FH-40A catalyst developed and produced by Fushun Petrochemical Research Institute. The chemical hydrogen consumption of the reaction and the dissolved hydrogen in the system are tested first, and then the method process of the present invention is carried out. The reaction pressure is 4.0MPa, and the volume space velocity of the reaction raw material oil is 2h -1 . The volume ratio of hydrogen to oil is based on the reaction chemical hydrogen consumption plus 1.5 times the dissolved hydrogen in the system, and the circulation ratio (circulation oil volume: fresh raw material volume) is 0.3:1. The reaction result is a desulfurization rate of 99.5%, which is basically equivalent to the reaction effect under the existing high hydrogen-to-oil ratio operating conditions, and the stability of the catalyst activity is equivalent to that under ordinary conditions.

Embodiment 3

[0031] Diesel feedstock is hydrorefined at 350°C for desulfurization and denitrogenation, and the catalyst is FHDS-6 catalyst developed and produced by Fushun Petrochemical Research Institute. The chemical hydrogen consumption of the reaction and the dissolved hydrogen in the system are tested first, and then the method process of the present invention is carried out. The reaction pressure is 4.0MPa, and the volumetric space velocity of the reaction raw material oil is 1.9h -1. The volume ratio of hydrogen to oil is based on the reaction chemical hydrogen consumption plus 0.8 times the amount of dissolved hydrogen in the system, and the circulation ratio (circulation oil volume: fresh raw material volume) is 2:1. The reaction results show that the desulfurization rate is 99.9%, and the denitrification rate is 99.6%, which are basically equivalent to the reaction effect under the existing high hydrogen-to-oil ratio operating conditions, and the stability of the catalyst activi...

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Abstract

The invention discloses a low-cost hydrogenation process method, which comprises the following steps of: mixing base oil with hydrogen; allowing the mixture to pass through a catalyst bed under the condition of a hydrogenation process; and mixing and recycling partial hydrotreating products without setting a hydrogen circulating system, wherein the using amount of the hydrogen is 1 to 10 times that of the hydrogen which is dissolved by a reaction system under the condition of adding a reaction condition based on the chemical hydrogen consumption during the reaction. The low-cost hydrogenation process method is a hydrogenation process of gas, liquid and solid phases with a low hydrogen-oil ratio; due to the low hydrogen-oil ratio, the hydrogen circulating system in the conventional hydrogenation process can be removed to greatly reduce the equipment investment and the operation cost; the reaction can be ensured to perform successfully by properly maintaining a little gas-phase hydrogen; and proper hydrotreating product circulation can ensure that the operation is stably performed for a long-time circle.

Description

technical field [0001] The invention relates to a fixed-bed three-phase hydrogenation process, which does not need a hydrogen circulation link and a hydrogen circulation compressor. Background technique [0002] The fixed-bed hydrogenation process is usually a catalytic reaction process for removing impurities such as sulfur, nitrogen, oxygen, and metals from crude oil raw materials, or reducing the size of raw material molecules. The hydrogenation process itself needs to consume a certain amount of hydrogen to saturate aromatics, olefins and other unsaturated components and remove impurities, which is called the chemical hydrogen consumption of the hydrogenation reaction. The hydrogenation process of different raw materials has different chemical hydrogen consumption, which can be measured by experiment or calculated by empirical formula. It is generally believed that in the hydrogenation process, it is necessary to operate under the condition of hydrogen gas much higher t...

Claims

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Application Information

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IPC IPC(8): C10G45/02
Inventor 方向晨郭蓉杨成敏孙万付李扬宋永一
Owner CHINA PETROLEUM & CHEM CORP
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