Process for recycling and reutilizing waste, in particular solid

Details Process for recycling and reutilizing waste, in particular solid Process for recycling and reutilizing waste, in particular solid

1989-09-13

1991-04-23

Medley, Margaret B.

Fuel and related compositions

Consolidated solids

Consolidation process using specified condition or technique

44595, 44596, C10L 506

Patent

active

050096729

ABSTRACT:
Process for recycling and recovering solid urban waste and the like, consisting in subjecting solid urban waste (SUW), after the removal of any ferromagnetic material present therein, to high-pressure compression inside a screening press or the like, so as to separate the putrescible organic material from the dry material intended to form the combustible material, then subjecting the organic material to a process of anaerobic fermentation in a sealed and dry environment, so as to allow to extract, at the end of the fermentation cycle, the biogas thus produced, which can be used directly for producing electric power or for other uses, the residuals of fermentation in the form of humus being subsequently subjected to refining and then to screening to recover the light materials; sifting, within a known rotary screen, the dry material so as to separate the combustible components, such as paper, fabrics, wood, plastics, leather and rubber, from the inert ones, such as glass, non-ferrous metals and any organic parts; the combustible components being then brought to a size suitable for a subsequent briquetting operation in order to obtain a stockable solid fuel.

REFERENCES:
patent: 3506414 (1970-04-01), Skendrovic
patent: 3790091 (1974-02-01), Law et al.
patent: 3910775 (1975-10-01), Jackman
patent: 4026678 (1977-05-01), Livingston
patent: 4135888 (1979-01-01), Waltrip
patent: 4445906 (1984-05-01), Riemann et al.
patent: 4561860 (1985-12-01), Gulley et al.
patent: 4859211 (1989-08-01), Moore
McGraw-Hill Series in Chemical Engineering, The Chemical Process Industries, Shreve, 2nd Ed., McGraw-Hill Book Co. Inc., N.Y., 1956, pp. 664-666.

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