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Method for drying catalyst formed materials

A drying method and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of material cracking strength, low production efficiency, large space occupation, etc. The effect of shortening production time and improving production efficiency

Active Publication Date: 2013-05-15
ZIBO QIMAO CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the molded material is directly dried in a drying oven, the appearance and shape of the material will change due to the uneven water loss rate between the surface and the interior, and the material will crack and its strength will decrease, and the product yield will be low.
[0003] The disadvantage of this method is that the production efficiency is low and it takes up a lot of space.
For some special materials, the shortcomings of this method are more obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Wrap and seal the tray containing the molding material with a polyethylene woven bag. The weaving density of the woven bag is 32×32 pieces / 100mm. materials in direct contact. The temperature in the oven is controlled at 100°C, and the drying time is controlled at 16 hours. In the early stage of drying, do not check the materials in the woven bag at will, otherwise the materials will be deformed due to changes in high temperature and high humidity conditions.

Embodiment 2

[0016] Wrap and seal the tray containing the molding material with a polypropylene woven bag, the weaving density of the woven bag is 40×40 pieces / 100mm, after wrapping, place it neatly on the oven car to ensure that the hot air will not enter the woven bag and the material from the woven bag mouth direct contact. The temperature in the oven is controlled at 120°C, and the drying time is controlled at 20 hours. In the early stage of drying, do not check the materials in the woven bag at will, otherwise the materials will be deformed due to changes in high temperature and high humidity conditions.

Embodiment 3

[0018] Wrap and seal the tray containing the molding materials with a polypropylene woven bag with a weaving density of 48×48 pieces / 100mm. After wrapping, place them neatly on the oven car to ensure that hot air will not enter the woven bag and the material from the woven bag mouth direct contact. The temperature in the oven is controlled at 140°C, and the drying time is controlled at 24 hours. In the early stage of drying, do not check the materials in the woven bag at will, otherwise the materials will be deformed due to changes in high temperature and high humidity conditions.

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Abstract

The invention provides a method for drying load catalyst formed materials. The method comprises the following steps of: wrapping and sealing the formed materials by using a woven bag prepared from high-temperature material which is resistant to a high temperature of over 100 DEG C to ensure that the formed materials do not contact hot air directly, and drying by using a drying box directly. The method is particularly suitable for the shaped materials of large dimensions, and the dissipation speed of moisture on surfaces of the materials and the moisture inside the materials are uniform in thedrying process to prevent the deformation of the formed materials, so that the preparation process for a large-scale load catalyst is simplified.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for drying a molded material of a supported catalyst. Background technique [0002] At present, the drying method for special-shaped materials with large appearance size in the catalyst preparation industry is mainly the health drying method. Under normal conditions, the molded material is placed in a relatively closed space or in a cool and ventilated environment for 5-7 days, so that the moisture inside the molded material is slowly lost, and then dried in a drying oven. If the molded material is directly dried in a drying oven, the appearance and shape of the material will change due to the uneven rate of water loss on the surface and inside, and the material will crack and its strength will decrease, and the product yield will be low. [0003] The disadvantage of this method is that the production efficiency is low and it takes up a lot of space. For some specia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/08
Inventor 宫钰于国王红彬
Owner ZIBO QIMAO CATALYST
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