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FOERFARANDE FOER FOERBAETTRING AV EFTERANVAENDNINGEN AV VID TILVERKNINGSPROCESSEN FOER SLIPMASSA ALTSTRAD VAERMEENERGI
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Title:
FOERFARANDE FOER FOERBAETTRING AV EFTERANVAENDNINGEN AV VID TILVERKNINGSPROCESSEN FOER SLIPMASSA ALTSTRAD VAERMEENERGI
Author:
AARIO MATTI
;
MAIJALA ARI
Subjects:
BLASTING
;
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
;
HEAT EXCHANGE IN GENERAL
;
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
;
HEATING
;
LIGHTING
;
MECHANICAL ENGINEERING
;
METHODS OF STEAM GENERATION
;
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
;
STEAM BOILERS
;
STEAM GENERATION
;
TEXTILES
;
WEAPONS
Description:
A method of improving the utilization of the heat energy produced in a wood grinding process when wood is ground in a grinding space (3) under a pressure exceeding atmospheric pressure, and warm shower water (G) is sprayed into the grinding space. Steam (H) is separated from the groundwood pulp (A) discharged from the grinding space in a steam separator wherein the groundwood pulp is allowed to expand from its inlet pressure to atmospheric pressure in at least two steam separators (11,14) by releasing steam from the groundwood pump in each steam separator by decreasing the pulp pressure. The amount of steam (H1,H2) released in the separate steam separators is adjusted according to the proportions in which steam is needed for utilizations purposes. Thus the heat energy of the pressure grinding process can be recovered in separate steam fractions the amount and pressure of which correspond to the requirements of the utilization purposes. It is preferable to heat the shower water by steam of such a volume and pressure that the temperature of the shower water increases to a desired degree, preferably above 100 DEG C.
Creation Date:
1982
Language:
Finnish
Source:
esp@cenet
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