Method for preparing inactive filler for EO/EG device

Abstract

The invention provides a method for preparing inert filler for EO / EG devices, which is characterized in that the inert filler consists of the following raw materials by weight percentage: 10-50 percent of industrial alumina, 7-25 percent of kaolin, 8-20 percent of industrial silicon dioxide, 15-45 percent of ordinary clay, 5-15 percent of bauxite, 2-10 percent of bentonite and 1-10 percent of calcium carbonate; the raw materials are ground respectively, added with a certain amount of adhesive to help mold and dried to be a blank which is to be subjected to high-temperature firing and is in the spherical shape with holes or no holes; and the dried blank is calcined for 1 to 12 hours at a high temperature between 1,000 and 1,600 DEG C, and is preferably calcined for 2 to 8 hours at a high temperature between 1,200 and 1,500 DEG C.

Description

technical field [0001] The invention relates to catalytic carrier technology, which is a preparation method of an inert filler for an EO / EG device. Background technique [0002] The inert filler used in the reaction, conversion, adsorption and other devices in petrochemical industry plays the role of bottom, covering, support, interlayer and heat insulation. [0003] Ethylene oxide is a large-yield and very important basic organic raw material. The reaction of ethylene and molecular oxygen to generate ethylene oxide is an important organic reaction. Under the action of silver catalyst, the reaction of ethylene and molecular oxygen mainly generates ethylene oxide At the same time, side reactions will occur to form carbon dioxide and water. In industrial EO / EG devices, inert balls are generally used to support and cover the catalyst, and if the quality of the inert filler product is unqualified and has a certain activity, it will cause ethylene oxide isomerization under the c...

AI Technical Summary

Problems solved by technology

In industrial EO / EG devices, inert balls are generally used to support and cover the catalyst, and if the quality of the inert filler product is unqualified and has a certain activity, it will cause ethylene oxide isomerization under the conditions of ethylene epoxidation reaction A part of the produced aldehyde can be further deeply oxidized to generate carbon dioxide and water under the action of a silver catalyst; while the other part will enter the next step and remain in the product, resulting in a decline in product quality. At the same time, this part of the aldehyde can also be Converted to acid in the absorption tower, causing corrosion to equipment pipelines