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Device system for hydrogenation reaction by using reboiling furnace as start-up furnace and start-up method

A technology of hydrogenation reaction and reaction device, which is applied in the fields of hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of low thermal energy utilization efficiency and complicated procedures, so as to improve process integration, save investment costs, The effect of saving floor space

Active Publication Date: 2022-04-01
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology

[0008] Aiming at the problems of low thermal energy utilization efficiency and complicated procedures in the start-up method of hydrogenation reaction existing in the prior art, the present invention proposes a device system and start-up method in which a reboiler is used as a start-up furnace for a hydrogenation reaction. Realize hydrogenation catalyst vulcanization and raw material preheating, the start-up process can be realized without building a new start-up furnace, reducing the equipment footprint and one-time investment cost

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  • Device system for hydrogenation reaction by using reboiling furnace as start-up furnace and start-up method
  • Device system for hydrogenation reaction by using reboiling furnace as start-up furnace and start-up method

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Embodiment 1

[0114]This embodiment provides a hydrogenation reaction using a reboiler as a start-up furnace device system, specifically a 2 million tons / year diesel hydrogenation device, the hydrogenation reaction uses a reboiler as a start-up furnace start-up system device For the hydrogenation reaction in the above-mentioned specific embodiment, a device system using a reboiler as a start-up furnace is used. The 2 million tons / year diesel hydro-upgrading unit uses straight-run diesel oil as raw material. The main products are heavy naphtha that meets the feedstock of the reforming unit and refined diesel oil that meets the National VI quality standard. The by-products are light naphtha and sulfur-containing liquefaction Gas, low-fraction gas and sulfur-containing dry gas; the operating flexibility of the device is 60-110%, and the annual operating hours are 8,400 hours; the device is composed of a reaction part and a fractionation part. According to the information provided by the cataly...

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Abstract

The invention provides a device system using a reboiler furnace as a start-up furnace for hydrogenation reaction and a start-up method, the start-up method uses the reboiler furnace to realize a process of hydrogenation catalyst prevulcanization and raw material start-up heating, distillate oil heated by the reboiler furnace is used as a heating medium to heat recycle hydrogen or hydrogen-mixed oil during start-up, and the reboiler furnace is used as the start-up furnace to heat the recycle hydrogen or hydrogen-mixed oil during start-up. And the device system does not contain a start-up furnace, and the start-up process of hydrogenation reaction is completed by using a reboiling furnace, so that the one-time investment cost of equipment is saved, and the overall occupied area of the equipment is reduced.

Description

technical field [0001] The invention belongs to the field of petroleum and petrochemical technology, and in particular relates to a device system and a start-up method for a hydrogenation reaction using a reboiler as a start-up furnace. Background technique [0002] Hydrotreating and hydrocracking units are generally equipped with reaction feed furnace and reboiler. Hydrogenation reactions mainly include olefin saturation, aromatics saturation, hydrodesulfurization, hydrodenitrogenation, cycloalkane ring opening, alkane cracking and other reactions, and the overall performance is exothermic reaction. The heat of reaction has a great relationship with the composition of raw materials, the target product and the depth of reaction. Part of the hydrogenation unit has a large reaction heat generation, and the temperature difference between the reaction product temperature and the hydrogen-mixed oil entering the reaction unit is high. The hydrogen-mixed oil can be heated to the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
Inventor 王振华李义一费翔陈相宁段晓磊
Owner CHINA NAT OFFSHORE OIL CORP
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