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首页> 外文期刊>Anaesthesia: Journal of the Association of Anaesthetists of Great Britain and Ireland >The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
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The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration

机译：非加压化学氧气反应生成容器和呼吸系统的开发和评估，可长时间提供紧急氧气

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摘要

The objective was to develop a sodium percarbonate/water/catalyst chemical oxygen generator that did not require compressed gas. Existing devices utilising this reaction have a very short duration of action. Preliminary experiments with a glass reaction vessel, water bath and electronic flowmeter indicated that many factors affected oxygen production rate including reagent formulation, temperature, water volume and agitation frequency. Having undertaken full-scale experiments using a stainless steel vessel, an optimum combination of reagents was found to be 1 litre water, 0.75 g manganese dioxide catalyst, 60 g sodium percarbonate granules and 800 g of custom pressed 7.21 (0.28) g sodium percarbonate tablets. This combination of granules and slower dissolution tablets produced a rapid initial oxygen flow to 'purge' an attached low-flow breathing system allowing immediate use, followed by a constant flow meeting metabolic requirements for a minimum of 1 h duration.
机译：目的是开发不需要压缩气体的过碳酸钠/水/催化剂化学氧气发生器。利用这种反应的现有装置作用时间很短。用玻璃反应器，水浴和电子流量计进行的初步实验表明，影响氧气产生速率的因素很多，包括试剂配方，温度，水量和搅拌频率。使用不锈钢容器进行了大规模实验，发现试剂的最佳组合是1升水，0.75 g二氧化锰催化剂，60 g过碳酸钠颗粒和800 g定制压制的7.21（0.28）g过碳酸钠片剂。这种颗粒和较慢的溶解片剂的结合产生了快速的初始氧气流，以“吹扫”附着的低流量呼吸系统，使之可以立即使用，然后持续不断的流量满足代谢要求，持续至少1小时。

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