FIELD: chemistry.
SUBSTANCE: method of complex processing of vegetable biomass includes hydrothermomechanical processing of destructed vegetable biomass in liquid medium and separation of obtained pulp into target products in form of separate fractions. At the first stage pulp, obtained by mixing of water and vegetable wastes, is processed by mechanical impact in device, causing self-heating of pulp components, at the second stage after processing of pulp at temperature of self-heating 40+/-5°C part of liquid fraction is discharged from pulp, at the third stage water is added and hydrothemomechanical processing is repeated, providing self-heating of mixture to 120+/-5°C or hydrothermomechanical processing is carried out at temperature not higher than 200°C by said self-heating and additional heating, in the process of the following mixture cooling separated are solid phase dispersed in pulp cellulose fraction at reduction of pulp temperature to 100±5°C, lignine fraction, deposited at reduction of pulp temperature to 40±5°C, - liquid fraction in form of mixture of water and low molecular organic or inorganic compounds, which are soluble in water and/or precipitate at temperatures lower than 40±5°C, with hydrothermomechanical processing being carried out in water at ratio of water/biomass from 20:80 to 80:20.
EFFECT: method is environmentally friendly, is characterised by high degree of target product extraction, which results in obtaining fractions, suitable for further application.
4 cl, 5 tbl, 4 ex
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Authors
Dates
2015-02-20—Published
2014-02-05—Filed