High activity deoxidant, and its preparing method

Abstract

The invention discloses a highly active deoxidizer and a preparation method thereof. The deoxidizer is composed of an active component and a supporting carrier, wherein the active component is a low-valent oxide of Mn and Fe; the supporting carrier is one of cement, gypsum, kaolin, sheepskin, alumina and diatomaceous earth or a mixture of several. The present invention adopts manganese ore and iron ore with rich domestic resources as raw materials, and the cost price is lower than the existing manganese type, copper type and nickel type deoxidizers, and has stronger market competitiveness; the deoxidizer of the present invention deoxidizes Large deoxidizing capacity, high deoxidizing precision, high mechanical strength, high heat-resistant temperature, and long service life per unit weight of deoxidizer bring convenience to operation and save resources and funds. It can be used for deep deoxidation of general gases such as N2, H2, CO, etc.; organic gases such as CH4, C2H4, C3H6, etc., so that the residual oxygen content in the gas is ≤0.1×10-6V / V. This product can be regenerated by heating with hydrogen and used repeatedly.

Description

Technical field [0001] The present invention relates to a high-activity deoxidizer and a preparation method thereof. More specifically, the present invention relates to a high-activity deoxidizer that uses bimetal oxide as an active component and is particularly suitable for removing oxygen from gaseous or liquid materials. Agent and its preparation method. Background technique [0002] As early as 1925, the British Mande and others prepared a deoxidizer composed of iron powder, iron sulfate and hygroscopic substances in order to prevent the transformer from catching fire and explosion. In the 1960s, there were reports of synthesis gas deoxygenation catalysts abroad. The active component of these catalysts is MoS 2 -CoS, Cu, Pb, Pt, Pa, and the carrier is mostly Al 2 O 3 , Activated carbon, silica gel, molecular sieve and diatomaceous earth, etc. Among these catalysts, noble metals, mainly Pt and Pa, have high catalytic deoxygenation activity, but this kind of catalyst is expensi...

AI Technical Summary

Problems solved by technology

[0007] The Shanxi Coal Chemical Institute of the Chinese Academy of Sciences has developed a deoxidation catalyst JHO-2 in high-concentration carbon monoxide synthesis gas. This catalyst has two characteristics, namely, low-temperature activity is poor, and when the temperature is high, it will cause the sintering of the copper-based catalyst, which will shorten the service life.

In addition, when the temperature is high, the disproportionation reaction of Co accelerates, resulting in carbon deposition on the surface of the catalyst, which also shortens the life of the catalyst.