FIELD: machine building.
SUBSTANCE: present invention relates to a method for heating a hydraulic boiling boiler, such as a single-vessel hydraulic boiling boiler, which has an upper separator, a level of chips and a liquid phase higher than the level of chips. Method includes at least the following stages: a. feeding chips into liquor to produce a suspension having a first temperature, b. feeding the chips suspension into the boiling pot through the upper separator, c. supply of direct vapour into liquid phase between chip level and upper separator with heating of suspension to second temperature for impregnation step, where steam is supplied using at least one steam injector having a plurality of steam release openings, and d. heating the suspension to the third temperature and pulping the chips in the boiling zone and removing the boiled pulp from the bottom part of the boiling boiler.
EFFECT: present invention relates also to boiling boiler system.
13 cl, 5 dwg
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