Purification material and purification bed layer for chemical oxygen generator

Abstract

The invention relates to a purification material and a purification bed layer for a chemical oxygen generator, and belongs to the technical field of gas purification. The total mass of the purification material finished product is 100%, and the purification material finished product comprises the following components in percentage by mass: 50%-95% of a carbon monoxide purifying material; 5%-50% of an acid gas purification material; the carbon monoxide purification material comprises a noble metal catalyst taking platinum and palladium as active components, the acid gas purification material is more than one of soda lime, quick lime and calcium hydroxide; the purification bed layer is provided with a top-layer solid filter material, and more than one layer of carbon monoxide purification material and more than one layer of acid gas purification material are arranged below the top-layer solid filter material. The purification material can improve the quality of gas generated by the chemical oxygen generator; the purification bed layer can increase the path length of gas generated by the chemical oxygen generator and improve the purification effect on impurity gas.

Description

technical field [0001] The invention relates to a purification material and a purification bed for a chemical oxygen generator, belonging to the technical field of gas purification. Background technique [0002] The chemical oxygen generator is a device that generates oxygen through the decomposition of chemical substances (chlorate or perchlorate), and is widely used in underwater, manned deep diving, aviation, aerospace, mining, escape, chemical defense, etc. field. When the manned submersible dives into the deep sea and the oxygen supply is insufficient, the chemical oxygen generator is usually used as the life support equipment for emergency oxygen supply, supplying oxygen to the personnel to deal with the failure or waiting for rescue, so as to ensure the life safety of the divers. When a commercial aircraft depressurizes the cabin at high altitude, it is necessary to provide emergency oxygen sources for passengers. Usually, chemical oxygen generators are used to relea...

AI Technical Summary

Problems solved by technology

However, this solution needs to add more filter materials to make it run through the middle of the entire drug core, which has strict requirements on the production of the drug core and is difficult to process and implement.

It is relatively difficult to achieve simultaneous purification of two types of impurity gases, acid gas and carbon monoxide, in the same filter material, and the effective filter material length gradually shortens with the generator reaction, which affects the gas quality in the later stage of work

Images