×

Production of non-toxic gas by combustion of solid propellant

  • US 3,964,256 A
  • Filed: 10/10/1973
  • Issued: 06/22/1976
  • Est. Priority Date: 10/17/1972
  • Status: Expired due to Term
First Claim
Patent Images

1. A process for the rapid production of a substantial volume of non-toxic gas at a moderate temperature, which comprises the steps of:

  • a. effecting combustion of a pyrotechnic charge consisting of a composite solid propellant having a high content of inorganic non-nitrogenous oxidant in excess of 80 percent said inorganic oxidant being selected from the group consisting of alkali metal and alkaline earth metal perchlorates and a low content of a carbonaceous, oxygen-containing, binder not exceeding 17 percent, said binder being selected from the group consisting of cellulose triacetate and silicone resins, the remaining ingredients being free of nitrogenous compounds;

    in a combustion chamber to produce a substantial volume of combustion gases at an elevated temperature,b. passing the hot combustion gases through a first cooling phase in which the hot combustion gases are diluted with oxygen obtained by the thermal decomposition of an oxygen-containing inorganic compound which has a low thermal stability and liberates, in gaseous form, only oxygen, whereby the combustion gases are cooled to a temperature of from 225°

    to 700°

    C, andc. passing the gaseous mixture from step (b) to a second cooling phase in which the gas mixture from the first cooling phase is cooled by contact with cooling means to the temperature of utilization.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×