Chinese officials said the explosion was due to improper injections of desulfurizer , part of the oil-refining process .

中国官方称爆炸的原因是注入含有强氧化剂的原油脱硫剂，属原油提炼加工过程。

A government investigation found the desulfurizer had been strongly oxidizing and that workers had failed to follow standard safety protocols , the new york times reported . As they give off oxygen , oxidizing agents can lead other substances , such as oil , to combust .

《纽约时报》报道称：一项政府调查报告显示工人没有遵照安全标准，过量注入含有强氧化剂的原油脱硫剂，当释放氧气时，氧化剂会导致石油等其它物质燃烧，甚至爆炸。