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A temperature and pressure control method for a hydrogenation process and its design method and application

A pressure control and process technology, applied in the petroleum industry, hydrocarbon oil cracking, processing hydrocarbon oil, etc., can solve the problem of no better solution.

Active Publication Date: 2018-03-06
CATECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above step 3 is the difficulty of dealing with temperature and overpressure, and there is no better solution at present

Method used

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  • A temperature and pressure control method for a hydrogenation process and its design method and application

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Embodiment Construction

[0024] In order to further illustrate the specific features of the present invention, we will combine figure 1 To illustrate, this example introduces the pressure relief process of the oil-coal slurry bed (with internal circulation structure) hydrogenation process, including such as figure 1 Reactor 15 connected by the connection shown in the connection method, high heat fraction 1, high temperature fraction 2, cold high fraction 3, hot low fraction 4, temperature low fraction 5, cold low fraction 6, and the materials at each stage indicated in the figure are respectively Reaction product 7, cold oil 8, pressure relief line 9, cold high gas phase product 10, cold low gas phase product 11, cold low liquid phase product 12, waste water 13, temperature and low oil phase product 14.

[0025] The pressure relief point is set at the outlet of the cold high point 3, respectively valve A and valve B, set in parallel, the valve is a two-position valve, and its pressure relief speed is 6ba...

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Abstract

Disclosed are a temperature and pressure control method for a hydrogenation process, a design method therefor and the use thereof. A pressure relief point is arranged at an outlet of a separation system after a reactor, or at a downstream device or pipeline connected thereto, with the temperature at the pressure relief point being 30-220C. Two control points are arranged, wherein when control point I is exceeded, i.e., temperature 440C / pressure 19 MPa, the pressure reduction rate is 3-10 bar / min; and when control point II is exceeded, i.e., temperature 460C / pressure 21 MPa, the pressure reduction rate is 10-25 bar / min. By using this control method, a high-pressure device can be made more stable during a pressure relief process.

Description

Technical field [0001] The invention relates to a temperature and pressure control method of a hydrogenation process, a design method and application thereof, and belongs to the fields of petrochemical industry and coal chemical industry. Background technique [0002] The slurry-bed hydrogenation process can effectively utilize heavy oil resources and coal resources, remove impurities such as sulfur, nitrogen, and heavy metals in the raw materials, while improving the yield and quality of light oil, which poses challenges to traditional refining technologies. At the same time, due to its low price, which improves the economic benefits of processing enterprises, the slurry bed processing technology has become a research hotspot in the petrochemical industry in recent years. The slurry-bed hydrogenation reactor is the core equipment of the process, which is related to the success of the entire plant. [0003] The hydrogenation reaction is a strong exothermic reaction. The temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/26
CPCC10G47/26C10G2300/4006C10G2300/4012
Inventor 李苏安邓清宇王坤朋
Owner CATECH TECH
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