Patent Number: 043024190
Section: claims

1. In a recombiner system in which first and second components of a gas mixture are combined in a reactor, the improvement comprising: a first component gas analyzer for providing an indication of the amount of said first component in an inlet gas stream upstream from the reactor;  a gas flow passage from the first component gas analyzer to a downstream mixing point where an amount of said second component is introduced into the gas stream, the gas flow passage providing a delay time T for the gas stream;  electronic control circuitry responsive to the first component indication to provide a second component signal indicative of the amount of said second component which must be introduced into the gas stream to provide a predetermined ratio of the first and second components; and  second component flow rate control means responsive to the second component control signal for introducing a second component gas flow into the gas stream at the mixing point, the time required to change the second component flow in response to a change in the first component at the gas analyzer closely matching the delay time T. 2. The improvement in a recombiner system as claimed in claim 1 further comprising a second component gas analyzer for providing an indication of the amount of the second component in the gas stream, the first component indication serving as a remote set point for the second component indication in the electronic control circuitry. 3. The improvement in a recombiner system as claimed in claim 2 wherein the second component gas analyzer is downstream of the mixing point. 4. The improvement in a recombiner system as claimed in claim 1, 2 or 3 further comprising an excess component analyzer for providing an indication of one of the gas components in an outlet stream from the catalytic reactor, the electronic control circuitry providing a second component control signal to maintain the excess indication at a predetermined set point. 5. The improvement in a recombiner system as claimed in claim 4 wherein the first component is hydrogen, the second component is oxygen and the excess component is oxygen. 6. The improvement in a recombiner system as claimed in claims 1, 2 or 3 wherein the first component is hydrogen and the second component is oxygen. 7. The improvement in a recombiner system as claimed in claim 6 further comprising a moisture separator in the output stream for removing water from the gas stream. 8. The improvement in a recombiner system as claimed in claim 6 further comprising, in the catalytic reactor, a permeable layer of silver zeolite upstream of the catalyst. 9. The improvement in a recombiner system as claimed in claim 1 wherein the primary component of the inlet stream is an inert gas. 10. The improvement in a recombiner system as claimed in claim 1 wherein the primary component of the inlet stream is nitrogen.