Iron-series deoxidizing agent

Abstract

The invention discloses an iron-series deoxidizing agent. The agent is prepared from raw materials comprising, by weight, 45-65% of reductive iron powder, 0.2-2% of activated carbon, 1.5-3.5% of electrolyte, 12.5-43% of fillers, 0.2-2% of polyacrylic acid-series super absorbent resin, 0-5% of alkali compounds and 9-16% of tap water. The iron-series deoxidizing agent is stable and reliable in performance, easy and convenient to process and operate, low in cost and more suitable for large-package use, and can be widely applied to storage of grain like rice, japonica rice, corn and flour.

Description

technical field [0001] The invention relates to a deoxidizer, in particular to a deoxidizer in modified atmosphere packaging of grain depots. Background technique [0002] Deoxidizer is also called oxygen scavenger. It removes the free oxygen in the packaging or container through the rapid chemical reaction between the deoxidizer and oxygen, so that the stored product is in an oxygen-free environment, inhibits the harm of aerobic microorganisms and insect pests, and prevents the quality of oxidative fission. For safe storage purposes. Deoxidizers are divided into two categories: deoxidizers formed of inorganic materials and deoxidizers formed of organic materials. In recent years, the series of inorganic substances has developed rapidly. In terms of cost and safety, iron-based deoxidizers of inorganic materials are the most widely used deoxidizers in controlled atmosphere storage. [0003] Existing inorganic iron-based deoxidizers are generally realized by increasing the c...

AI Technical Summary

Problems solved by technology

[0004] 1. If the content of activated carbon as a catalyst is increased, the catalytic reaction speed will be greatly increased, resulting in the accumulation of heat, resulting in the evaporation of internal water, which in turn restricts the oxygen absorption reaction, resulting in unstable performance of the deoxidizer; at the same time, it will affect the production The ingredients and packaging process in the process have high technical requirements; the subcontracting time of the product in the process of putting into the modified atmosphere packaging is shortened, and the operation difficulty is increased

[0005] 2. If the content of iron powder is increased, the total oxygen absorption capacity will be increased, but due to the smaller particle size and higher density of iron powder, the overall density of the formula will be too large

[0006] To sum up, when the content of catalyst and reduced iron powder in the deoxidizer formula is relatively high, the performance of the deoxidizer will be unstable, the processing operation will be complicated, the cost of raw materials will be high, and it will not be suitable for large packaging.