Method of bringing gases into contact with compostible material

Details Method of bringing gases into contact with compostible material Method of bringing gases into contact with compostible material

1984-06-06

1990-08-28

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Bacterial

71 13, 71 14, C05F 700, C05F 904

Patent

active

049522302

ABSTRACT:
A method for bringing gases into contact with compostible or partially composted material, in which the material placed in the form of a mass on a layer of particulate material and gas, preferably air, is passed through the material, the air being introduced into the mass through gas-distributing means embedded in or covered by the layer of particulate material, and in which the layer comprises a first part-layer of relatively coarse particulate material intended to serve as protection for the gas-distributing means and as a distributing filter for the through-flowing gas, and a second part-layer arranged upon the first part-layer and comprising relatively fine particulate material, the second part-layer being intended to distribute the through-flowing gas before the gas is introduced into the compostible or partially composted material. The second part-layer of the layer comprises a mixture of the relatively fine particulate material, as ballast material, and a binding agent and has such a particle size distribution and the ingredients are present in such mixing proportions that the second part-layer obtains an open porous structure having a pressure drop suitable for uniform gas distribution while, at the same time, being able to withstand the weight of heavy vehicles.

REFERENCES:
patent: 3138449 (1964-06-01), Renfro
patent: 4317671 (1982-03-01), Willisch

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