Temperature and pressure control method for hydrogenation process and design method and application of temperature and pressure control method

A technology of pressure control and process, applied in the petroleum industry, hydrocarbon oil cracking, hydrocarbon oil treatment, etc., can solve problems such as no better solution

Active Publication Date: 2017-07-18
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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  • Temperature and pressure control method for hydrogenation process and design method and application of temperature and pressure control method

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Embodiment Construction

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

[0025] The pressure relief point is set at the outlet of Leng Gaofen 3, which are respectively valve A and valve B, which are set in parallel. The valves are two-position valves, and the pressure relie...

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Abstract

The invention relates to a temperature and pressure control method for a hydrogenation process and a design method and application of the temperature and pressure control method. A pressure relief point is arranged at an outlet of a separation system behind a reactor or downstream equipment or pipeline connected with the outlet; the pressure in a reaction system is gradually released through opening the pressure relief point, wherein the temperature of the pressure relief point is 30-220 DEG C; two control points are sequentially arranged from low to high; when the temperature exceeds the control point I, the pressure reduction rate is 3-10bar / min; when the temperature exceeds the control point II, the pressure reduction rate is 10-25bar / min; the temperature of the control point I is greater than or equal to 440 DEG C and / or the pressure is greater than or equal to 19MPa; and the temperature of the control point II is greater than or equal to 460 DEG C and / or the pressure is greater than or equal to 21MPa. The invention provides emergency treatment measures such as over-temperature and overpressure of a set of hydrogenation reaction system; the pressure relief point is arranged behind a separator, especially a cold high-pressure separator; and through a new ideal of designing the pressure relief rate and the steps, high-pressure devices such as the reactor and the high-pressure separator can be more stable in the 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 an application thereof, belonging to the fields of petrochemical and coal chemical industries. 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 raw materials, and improve the yield and quality of light oil at the same time, which poses challenges to traditional refining technologies At the same time, due to its low price, which can improve 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 whole device operation. [0003] The hydrogenation reaction is a strong exothermic rea...

Claims

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Application Information

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Patent Type & Authority Applications(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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