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Catalyst loading method and apparatus

A technology of catalyst particles and catalytic materials, which is applied in chemical instruments and methods, bulk chemical production, chemical/physical processes, etc., and can solve problems such as equipment immobility

Inactive Publication Date: 2003-03-26
HALDOR TOPSOE AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fall distance of the particles from the brush to the bottom of the pipe is not controlled and the particles may also become wedged between the brush and the wall of the pipe so that the equipment cannot move in the pipe

Method used

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  • Catalyst loading method and apparatus
  • Catalyst loading method and apparatus
  • Catalyst loading method and apparatus

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Embodiment Construction

[0020] With the method according to the invention, the risk of fragmentation of catalyst particles falling from too high a height is avoided. Skilled loading personnel are also able to carry out the loading work much faster than conventional loading eg using the sock method.

[0021] A highly uniform loading density is obtained by this method without hammering the reactor tubes.

[0022] It is also possible to obtain a uniform pressure drop and thus a uniform flow through the reactor tubes. The result is a reduced tendency to form hot spots and increased tube life.

[0023] The device of the invention comprises several equally sized duct sections with a helically formed body secured to the inner wall. The pipe sections may be connected to and inserted into the reformer pipe to form a long loading pipe, as will be apparent from the following description with reference to the accompanying drawings.

[0024] In order to control the amount of catalyst entering the loading pipe,...

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PUM

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Abstract

The invention concerns a method of loading particulate catalytic material into a reactor tube and a loading apparatus for use in the method. The method comprises providing a loading tube through which catalyst particles pass in a damped motion. The dampening means are provided by mounting a spirally formed body on the inner wall of each tube section. The spirally formed body is formed from a rod having an arbitrarily shaped cross-section and a maximum dimension in any direction of the cross-section of 1 / 25- 1 / 2 of the diameter of the tube section. The spirally formed body in each section has a pitch, with respect to the diameter of the tube section, in the interval of 2-8.

Description

technical field [0001] The present invention relates to methods and apparatus for loading granular material into reactor tubes. More specifically, the invention relates to the loading of particulate catalytic material into reactor tubing, such as tubular steam reformers employed in ammonia, hydrogen and methanol plants. Background technique [0002] Typically a sock method is used to load particulate catalytic material into tubular reactors. In this method, an elongated sock made of flexible plastic material is filled with catalyst particles and lowered into the reactor tube by means of a wire to which the sock is attached. Upon reaching the bottom of the reactor, the thread is jerked, thereby opening the sock and releasing the particles into the reactor. [0003] When using this method, uneven and uneven loading of the reactor leads to void formation due to premature opening of the sock breaking the particles, or to bridge formation by the particles. The formation of voi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01J8/00B01J8/06B01J19/00
CPCB01J2208/00778B01J8/003B01J2208/00752B01J8/06B01J19/00
Inventor M·贝N·埃里克斯特鲁普
Owner HALDOR TOPSOE AS
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