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Tubular reactor

A tube-and-tube reactor and reactor technology, applied in the field of reactors, can solve problems affecting the safety of reactors, affecting the reaction performance of chemical production processes, and difficult heat transfer

Active Publication Date: 2015-02-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, it has been found that even for newly loaded reactors, the pressure drop of the vertical shell-and-tube catalytic reactor is relatively high, and there is a lot of room for improvement in the industrial effect of the reactor.
[0006] In addition, in terms of heat transfer, if high-pressure water and steam are used to obtain heat, due to the influence of the lower tube wall, a large-area gas film will be formed on the outer surface of the vertical tubes, that is, the problem of gas attachment.
As a result, the heat is not easily transmitted, which will eventually not only affect the reaction performance of the chemical production process, but also affect the safety of the reactor

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0060] Embodiment 1. Select 10m-long, 5.15cm stainless steel tubes in the tube-and-tube reactor, and make it have an included angle of 30° with the horizontal direction during the reaction.

Embodiment 2

[0061] Example 2. Select a stainless steel tube with a length of 10 m and an inner diameter of 5.15 cm in the tube-and-tube reactor, and make it have an included angle of 45° with the horizontal direction during the reaction.

Embodiment 3

[0062] Example 3. In the tubular reactor, a stainless steel tubular tube with a length of 10 m and an internal diameter of 5.15 cm was selected, and during the reaction, it had an angle of 60° with the horizontal.

[0063] Wherein embodiment 1-3 makes the mode that column tube is inclined can be realized by adopting the reactor provided by the present invention also can adopt the assembly method provided by the present invention to realize, gained reaction result is listed in Table 1, can find out that the present invention It has obvious advantages in reducing the pressure drop at both ends of the reaction equipment.

[0064] Table 1

[0065]

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PUM

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Abstract

The invention discloses a tubular reactor which comprises a reactor cabinet and a plurality of tubulations arranged in the reactor cabinet at intervals, wherein the reactor cabinet comprises a cabinet body and a horizontal base fixed at the bottom of the cabinet body, and the reactor cabinet is also provided with a reaction material inlet and a reaction product output which are communicated with the plurality of tubulations, wherein at least one tubulation is obliquely arranged relative to the horizontal base. As at least one tubulation in the tubular reactor provided by the invention is obliquely arranged relative to the horizontal base, in the process of filling catalyst, the catalyst can slowly slide in the tubulations with the help of the weight of the catalyst relatively, so that the uniformity of catalyst filler can be provided, the fluidity of the reaction fluid can be improved, the pressure drop can be reduced, the problem of gas attachment generated in the operation of exothermic reaction can be solved, and the heat transfer of the tubulations can be improved, and then the security and reliability of the reactor can be ensured.

Description

technical field [0001] The invention relates to the field of reactors, in particular to a tube-and-tube reactor, and more specifically to a tube-and-tube fixed-bed catalytic reactor. Background technique [0002] In the chemical industry, a fixed bed reactor refers to a device in which a fluid undergoes a chemical reaction through a fixed bed formed of a solid catalyst. Fixed-bed catalytic reactors are widely used in industrial production, for example, synthesis of ammonia, hydrogenation of distillate oil, and hydrogenation of residual oil. However, for chemical processes with large heat release, such as FT synthesis, aniline hydrogenation to cyclohexylamine, ethylene oxidation to ethylene oxide, sulfur dioxide oxidation to sulfur trioxide, synthesis gas to methanol, acetylene chlorination to vinyl chloride, benzene Oxidation to maleic anhydride, ortho-xylene to phthalic anhydride, etc., in order to facilitate heat extraction and stable control during the reaction process, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/06
CPCB01J8/008B01J8/06
Inventor 侯朝鹏夏国富孙霞王奎吴玉晋超阎振楠李明丰徐润胡志海聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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