A method of obtaining a catalyst carrier

 

(57) Abstract:

Use: petrochemical industry, in particular, the production of carriers for catalysts. The inventive medium is obtained by forming a viscous mass containing palygorskite or bentonite 50,0 - 65,0 wt. , %; formaldehyde and 0.2 - 0.5 wt.%; sawdust of 4.8 and 9.0 wt.% and water the rest, at 60 - 80oC. Next, the extrudates provalivajut air dried to remove moisture. Calcined carrier at 500 - 550oC.

The invention relates to the production of catalysts carriers, in particular, to methods for their manufacture, and can be used in the petrochemical industry.

A known method of manufacturing a catalyst carrier, comprising forming a viscous mass, based on the clay, drying and calcination [1]

However, the known method does not provide the required quality (specific porosity, strength, etc.,) of the final product catalyst carrier.

The aim of the invention is to improve the quality of the final product.

This objective is achieved in that in the method of manufacturing a catalyst carrier, comprising forming a viscous mass on the basis of clay and drying with the use of the th mass at 20-30aboutWith, carry out drying at 100aboutC and calcined at 500-550aboutC.

In addition, as a viscous mass of a mixture on the basis of palygorskite or bentonite in the following ratio, wt. Palygorskite or bentonite 50-65 Formaldehyde and 0.2-0.5 sawdust 4,8-9 Water the Rest

Due to the proposed temperature mode, each operation of the method in the manufacture of catalyst carrier is provided by the high quality of the final product, which was confirmed by practical construction of an experimental batch of catalyst carriers. The use of a mixture on the basis of palygorskite or bentonite also improves the quality of the final product, due to the technological properties of the mixture.

The method is as follows.

Prepared viscous mass on the basis of palygorskite or bentonite is formed into, for example, by means of press-forms, with 60-80aboutC. and Then molded to withstand the weight outdoor (provalivajut) at 20-30aboutWith until it reaches a certain strength. Then carry out the drying, for example, in a drying chamber at 100aboutTo completely remove moisture from the catalyst carrier. The final stud the proposed method is determined empirically and depends on several factors, including on several factors, including the size of the catalyst carrier.

Viscous mass, intended for the manufacture of the carrier prepared in accordance with the above formulation by mixing (for example, in the mixer with the mixer).

P R I m m e R. Viscous mass containing, by weight. of palygorskite 58; formaldehyde 0,21; sawdust 4; water 37,79, carefully mix in the mixer. Then the specified weight molded by extrusion through a mouthpiece cell shape at 65aboutC. Cut molded mass to elements with a length of 100-300 mm, then provalivajut outdoors at 20aboutC for 2 hours After that carry out the drying in a drying chamber at a temperature of 100aboutC for 2 h to remove moisture from the carrier. At the final stage, the carrier calcined at 550aboutC for 1 h

The obtained catalyst carrier has the following composition, wt. Palygorskite 93,2 Formaldehyde 0,4 sawdust 6,4

Laboratory studies made catalyst carrier showed that the specific porosity increased on average by 25.2% and strength by 12% which confirms the improvement of the quality of the final product of the way the media catalization, drying and calcination, wherein forming a viscous mass is carried out at 60 - 80oWith, the calcination is carried out at 500 - 550oWith and as a viscous mass of a mixture of the following composition, wt. %:

Palygorskite or bentonite - 50,0 - 65,0

Formaldehyde - 0,2 - 0,5

Sawdust - 4,8 - 9,0

Water - The Rest

 

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