Process for hot briquetting of organic solid materials
AssigneeVoest-Alpine Aktiengesellschaft
InventorAlois Janusch
Life of this patent
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Abstract
For the purpose of briquetting organic solid materials, such as brown coal or bituminous coal, the materials are heated by hot water and/or steam and under super-atmospheric pressure to temperatures exceeding 160.degree. C. After discharging the organic solid materials, which have become dried to a great extent, the generated steam is separated by sucking off the steam without substantially cooling effect, bitumen-forming substances present within the organic solid materials thereby rapidly becoming homogeneously distributed. These homogeneously distributed binding agents give the compressed briquettes obtained a high strength and good mechanical properties when using substantially reduced compacting pressures as compared with known briquetting processes.
Claims10
In a process for hot briquetting particulate organic solid materials selected from the group consisting of brown coal and bituminous coal which includes drying and heating the materials in a treatment zone under superatmospheric pressure by treatment at temperatures exceeding 160.degree. C. with a fluid selected from the group consisting of hot water and steam thereby generating steam, discharging the materials from the treatment zone, separating steam from the materials and pressing the materials into briquettes while maintaining a temperature exceeding 160.degree. C., the improvement comprising exposing the materials after discharging from the treatment zone and before pressing to sub-atmospheric pressure to thereby separate steam from the materials and sucking off the steam.
Dependencies are inferred from the claim text.