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一、前言除氧剂用于食品,药材,精密仪器等方面的密封除氧保存在国内外已很普遍。但除氧剂在大堆粮食密封中应用,国外尚无报导。究其原因可能是粮堆体积大,用量多,增大产品成本;再就是操作应用技术没有很好解决。近年来国内有些单位已对铁型除氧剂在粮食密封除氧方面进行了不同规模的研究,均取得明显效果。选用铁型除氧剂的理由是因为它具有制造简易,使用方便,价格低廉,效果好且不污染粮食等优点。虽然如此,但粮食储藏毕竟具有粮堆体积大、数量多的特点,所需用的除氧剂也必然相应地增大用量和费用,据报道,苏州市第1603粮库应用铁型除氧剂进行10万斤糯米除氧试验每万斤除氧剂费用为6.60元,嗣后航天部8511研究所在制备工序方面进行改进,制成粮食专用型铁粉除氧剂,成本大为下降,该所与南京集合村粮库进行了30万斤高桩大垛除氧试验,每万斤费用下降到4.03元。该项产品已于85年8月通过部级鉴定。
I. Introduction Oxygen scavenger for food, medicine, precision instruments and other aspects of the preservation of oxygen storage has been very common at home and abroad. However, oxygen scavengers in a large pile of grain seal applications, there is no report abroad. The reason may be the large size of the grain piles, the amount of more, increasing product costs; then the operation of the application of technology is not well resolved. In recent years, some domestic units have made iron oxide oxygen scavengers in food research conducted on different scales, have achieved remarkable results. Iron-based oxygen scavenger reason is because it has the advantages of easy manufacture, easy to use, low cost, good effect and does not pollute the food. Nonetheless, grain storage, after all, has the characteristics of large volume and large quantity of grain piles. The required oxygen scavengers also inevitably increase the dosage and costs accordingly. It is reported that the iron oxide scavenger For 100,000 kg of oxygen deoxygenation test kilos per kilogram of oxygen scavenger costs 6.60 yuan, later Institute of Space 8511 in the preparation process to improve, made of food-specific iron oxide oxygen scavenger, the cost dropped significantly, the Institute And Nanjing village set up grain storage 30 kg high pile piles oxygen test, the cost per kilogram down to 4.03 yuan. This product passed the ministry appraisal in August of 85 years.