HYDROGEN RECOVERY FROM GAS MIXTURES USING METAL HYDRIDES SUSPENDED IN SLURRY
The recovery of hydrogen from producer gas obtained by air gasification is a key process for a viable methanol from biomass route. The present available technology is less feasible for the hydrogen recovery from producer gas and therefore a new method is proposed. This method is based on the absorption of hydrogen in a slurry containing finely dispersed particles of metal hydride in an inert liquid. The method has several attractive features such as easy continuous operation, improved heat transfer to metal particles and reduction of problems known to occur in discontinuously operated fixed beds, which is the conventional way of operation. Under the present contract, a start has been made from just an idea of the new continuous hydrogen recovery process up to the pilot plant scale. Experimental results for a LaNi-5 - silicone oil slurry system are presented. It is shown that the system is very reactive and the conversion rates per unit volume reactor can be at least as high as in dry systems with other conditions similar. The chemical absorption of hydrogen in a slurry appears to be controlled by the diffusion of hydrogen through the liquid film and the possibility of chemical enhancement of the mass transfer process is discussed. The continuous pilot plant designed under the contract and the experimental programme is described.
Bibliographic Reference: EUR 9687 EN (1985) MF, 40 P., BFR 150, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123053700 / Last updated on: 1987-01-01
Available languages: en