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在各类火灾中，自燃火灾有一定的特殊性。能够自燃的物质很多，自燃的起因也不尽相同，如某些植物油会吸氧放热自燃，赛璐珞可以分解放热自燃，丙烯会聚合放热自燃等等。其中，植物的发酵放热自燃较为常见，如稻草、烟叶、中药材等的自燃就属这一类。一、植物自燃的过程与条件
In various types of fires, spontaneous combustion has certain characteristics. There are many substances that can self-ignite, and the causes of spontaneous combustion are also different. For example, some vegetable oils will ignite spontaneously by heat and oxygen. The cellulite can be divided into liberation heat and spontaneous combustion. The propylene will polymerize and exothermal spontaneous combustion and so on. Among them, the spontaneous exothermic combustion of the plant is more common, such as the spontaneous combustion of rice straw, tobacco leaves, and Chinese herbal medicines. First, the process and conditions of spontaneous combustion of plants