THIN-LAYER TREATMENT DEVICE
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United States of America Patent
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Jun 13, 2024
app pub date -
Feb 13, 2024
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Jun 12, 2019
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Abstract
A method for producing a cellulose solution with a solvent from a cellulose suspension in the solvent and a volatile non-solvent, including the introduction of the suspension into an inlet of a thin-film treatment apparatus, application and distribution of the suspension in a film-like form on a housing casing, temperature-controlled using a heat exchanger, by sweeper elements rotating about a common axis in a process housing of the treatment apparatus, evaporation of volatile non-solvent so that the cellulose is dissolved, and output of the solution of cellulose from the treatment apparatus through an outlet, wherein at least a part of the sweeper elements cause the cellulose to be advanced in the direction of the outlet so that the discharge at the outlet is between 300 kg/h and 600 kg/h cellulose solution per m2 of the temperature-controlled surface of the housing casing.
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