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Process for unloading of silver catalyst reactor and its apparatus

A silver catalyst and unloading device technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as low efficiency and poor effect, and achieve the effect of reducing unloading time, reducing losses, and facilitating recycling and reuse.

Inactive Publication Date: 2006-01-25
BEIJING UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

This method is inefficient and ineffective

Method used

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  • Process for unloading of silver catalyst reactor and its apparatus
  • Process for unloading of silver catalyst reactor and its apparatus
  • Process for unloading of silver catalyst reactor and its apparatus

Examples

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, describe in detail an embodiment belonging to the present invention:

[0024] For the specific structure of this embodiment, see figure 2 , the device used is as follows:

[0025] 1. One high-pressure air pump, the maximum theoretical air flow is 0.25m 3 / min, the maximum outlet pressure is 8MPa, which provides continuous high-pressure gas;

[0026] 2. High-pressure gas delivery pipe 2 adopts Φ8×12mm polyethylene pipe, 20m long;

[0027] 3. The high-pressure gas pipe 4 inserted into the catalyst reaction tube adopts one Φ5×8mm polyethylene pipe, and the length is 10m;

[0028] 4. The silver catalyst reaction tube 6 is a steel pipe with an outer diameter of Φ34mm, an inner diameter of Φ28mm, and a length of 10m;

[0029] 5. A vacuum cleaner with two functions of suction and recovery, model CB60-2, is used as suction equipment and recovery filter device;

[0030] 6. One common air valve is used to control the on-off of...

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Abstract

A material unloading method and apparatus for the silver catalyst reaction tube is disclosed. Said method features that the high-pressure gas is introduced to the catalyst reaction tube and a sucking unit is installed to the top of reaction tube to carry the silver catalyst from reaction tube to the filtering and recovering unit. Its apparatus is composed of high-pressure gas pump, high-pressure gas delivering tube, valve, high-pressure gas tube, and said sucking unit and filtering and recovering unit.

Description

technical field [0001] The invention is applied to the unloading of catalyst reaction equipment in petrochemical enterprises, and belongs to the field of chemical machinery. Background technique [0002] Ethylene oxide (EO) is an important petrochemical raw material. Ethylene oxide (EO) is mainly used to produce ethylene glycol (EG). Over the years, it has consumed about 60% of the world's total ethylene oxide (EO) above. EG is mainly used in the production of Polyurethane and automotive antifreeze. At present, all EO in the world is produced by direct oxidation of ethylene with silver catalyst. [0003] The schematic diagram of the ethylene oxide reaction tank is shown in the attached picture Figure 5 As shown, the ethylene oxide reaction tank 15 is equipped with upper and lower two-layer tube sheets 17, and the catalyst reaction tube 6 is welded between the two-layer tube sheets 17. The service life of the catalyst is about 2 years. When it fails, discharge Workers ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/06
Inventor 杨文通林卫华刘强刘志峰
Owner BEIJING UNIV OF TECH
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