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Discrete constant pressure system for staging solid-vapor compounds

  • US 5,263,330 A
  • Filed: 12/20/1991
  • Issued: 11/23/1993
  • Est. Priority Date: 07/07/1989
  • Status: Expired due to Term
First Claim
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1. An apparatus comprising:

  • a plurality of two or more reaction chambers each of said chambers having a different compound therein comprising a solid reactant adsorbent and a gaseous reactant adsorbed thereon, each of said compounds having a different gaseous reactant vapor pressure, substantially independent of the concentration of the gaseous reactant therein, wherein said gaseous reactant is selected from the group consisting of ammonia, water, carbon dioxide, sulfur dioxide, a lower alkanol, alkylamine, polyamine, phosphine and polar refrigerant having at least one free electron pair, and said solid reactant is an inorganic salt selected from the group consisting of a metal oxide, halide, carbonate, oxalate, nitrate, nitrite, sulfide, and sulfate, wherein said metal is selected from the group consisting of alkali metal, alkaline earth metal, transition metal, aluminum, zinc. cadmium, and tin, or a double metal chloride of metals selected from the group consisting of an alkali metal, alkaline earth metal, aluminum, manganese, iron, nickel and cobalt,heating means for introducing heat into at least one of said chambers, means for supplying a heat transfer fluid to and from said reaction chambers, and means for directing the heat transfer fluid through said reaction chambers in thermal communication with said compounds therein whereby heat from an exothermic reaction is directed to a reaction chamber for driving an endothermic reaction,flow directing means for directing relatively heated gaseous reactant from one or more desorbing reaction chambers to receiving means and directing relatively cool gaseous reactant from receiving means to one or more adsorbing reaction chambers, anda heat exchanger cooperating with said flow directing means for transferring heat between said heated gaseous reactant and said relatively cool gaseous reactant.

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