What is the difference between compressed oxygen self rescuer and chemical oxygen self rescuer

What is the difference between compressed oxygen self rescuer and chemical oxygen self rescuer, let me introduce you

The compressed oxygen self rescuer is like bai is a small oxygen cylinder du, which can store a certain amount of oxygen for people to breathe.

The oxygen generating tank of the chemical oxygen self rescuer is equipped with 500g of sodium superoxide and has radiating fins to dissipate the heat generated during the reaction. There is a mesh composed of metal wire mesh and glass wool on the upper and lower sides of the medicine to filter the dust of the medicine between the meshes. When you feel insufficient oxygen generation when wearing the mask, you can use a quick-start device to pull the nylon rope to make the sulfuric acid react with the starter block to generate oxygen immediately to make up for the insufficient oxygen generation state when you start to wear the mask.

It can be seen from the above characteristics that the advantage of the compressed oxygen self rescuer is that it is convenient to use, but the oxygen storage is small. The chemical oxygen self rescuer has the advantage of large oxygen storage, but there are redundant operations when using it, which is very inconvenient when working in mines and other operating locations. The above are their respective advantages. In addition, there is a filter-type self-rescuer, but it does not produce oxygen and is low in price. Domestic workers generally use it.