Heat storage material for process for preparing propylene by propane dehydrogenation and preparation method of heat storage material

A technology for heat storage materials and propane, applied in the direction of heat exchange materials, chemical instruments and methods, hydrocarbons, etc. The reduction can not be very uniform and other problems, to achieve the effect of low cost, reduce device energy consumption, and improve selectivity

Inactive Publication Date: 2021-05-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in bed pressure drop caused by inconsistent loading of fixed bed catalysts or the material flow caused by incompletely symmetrical process piping layout, the te

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019]Example 1

[0020]Preparation of 20 wt% Cuo / Sio by impregnation method2The heat storage material, which weighs a certain amount of nitrate is soluble in deionized water in a chemical formula, and then adds to a columnar SiO.2In the carrier, the solution was evaporated at 80 ° C with stirring, and the obtained material was dried overnight at a 100 ° C oven. The heat storage material was baked at 600 ° C for 3 hours after the drying was dried.

Example Embodiment

[0021]Example 2

[0022]Preparation of 10 wt% CuO / Sio by impregnation method2The heat storage material, which weighs a certain amount of nitrate is soluble in deionized water in a chemical formula, and then adds to a columnar SiO.2In the carrier, the solution was evaporated at 80 ° C with stirring, and the obtained material was dried overnight at a 100 ° C oven. The heat storage material was baked at 1000 ° C for 3 hours after drying.

Example Embodiment

[0023]Example 3

[0024]Preparation of 10 wt% CO by impregnation method3O4 / Al2O3The heat storage material is weighed in a chemical formula to solurate the deionized water, stirred for 25min, add to the shape of columnar.2O3In the carrier, the solution was evaporated at 80 ° C with stirring, and the obtained material was dried overnight at a 100 ° C oven. The heat storage material was baked at 1000 ° C for 3 hours after drying.

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Abstract

The invention discloses a heat storage material for a process for preparing propylene through catalytic dehydrogenation of propane and a preparation method of the heat storage material.The heat storage material is a supported composite metal oxide xMaOb/carrier, M is one or more of Ba, Mg, Mn, Zr, Ca, Ce, Bi, Cu, Co, Mo, Fe, Ni, Na, Nb and Sb, a is equal to 1-3, b is equal to 1-3, x is the loading amount of the composite metal oxide, and the value of x is 10-30 wt%. The synthesized heat storage material is mixed with a catalyst to be used in a reaction process for preparing propylene through the catalytic dehydrogenation of the propane, and thus, the selectivity can be improved under the condition that the conversion rate of the catalyst is not changed, heat is released in a reduction stage and an air regeneration stage, and bed temperature distribution is more uniform; and the heat storage material is expected to prolong the service life of the catalyst in industrial application reduce regenerated air inlet temperature or regenerated air flow and reduce energy consumption of a device.

Description

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Claims

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Application Information

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Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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