Optimizacija tehnološkega procesa izdelave kartona z uvajanjem CO[sub]2 v papirno pulpo

diplomsko delo

Branka Viltužnik (Author), Aleksandra Lobnik (Mentor), Mojca Poberžnik (Co-mentor)

Abstract

V diplomskem delu smo se posvetili izboljšanju tehnološkega procesa izdelave kartona. Eksperimentalno raziskavo smo opravili v realnem okolju kartonažne tovarne skozi daljše obdobje. S povečanim deležem uporabe recikliranih vlaken ter z uvajanjem zaprtih krožnih procesov papirna industrija sicer zmanjša stroške in vplive na okolje, vendar so to tudi glavni vzroki za povečanje mikrobiološke aktivnosti. Kakovost kartona se zmanjša zaradi prisotnosti mikroorganizmov, ki povzročijo nihanja pH vrednosti in neenakomerno raztapljanje CaCO3, ki se zadnje čase vedno bolj uporablja tudi kot polnilo. Izsledki raziskave so pokazali, da se z uvajanjem CO2 v papirno pulpo stabilizirajo pogoji za ohranjanje karbonatnega ravnotežja v mokrih fazah, posledično se zmanjša mikrobiološka aktivnost in poraba kemikalij, stabilizira se pH vrednost; vse skupaj pa pripomore k zanesljivejši proizvodnji in boljši kakovosti izdelka.

Keywords

karton;papirna pulpa;CO2;karbonatno ravnotežje;odvodnjavanje;retencija;alkaliteta;

Data

Language:	Slovenian
Year of publishing:	2009
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	[B. Viltužnik]
UDC:	676.026(043.2)
COBISS:	13774614
Views:	3158
Downloads:	629
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Abwasserreinigung mit Biodisk
Secondary abstract:	In the dissertation we focused on the improvement of technological process in cardboard production. The experimental research was performed in realistic environment of cardboard factory through longer period. Using increased share of recycled fibres and by introducing of closed circular processes, the paper industry reduces costs and impacts on the environment; however, these are also the main causes for microbiological activity enlargement. The quality of paperboard is reduced due to the presence of microorganisms, which cause changes in pH values and uneven dissolving of CaCO3 that is nowadays increasingly used as a filler. The research results indicated, that the introduction of CO2 to paper pulp stabilizes the conditions for keeping the carbonate equilibrium in wet phases constant. Consequently, the microbiological activity and consumption of chemicals is reduced, and pH value is stabilized; all this contributes to more reliable production and better product quality.
Secondary keywords:	cardboard;paper pulp;carbonate balance;dewatering;retention;alkality;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za strojništvo, Tekstil
Pages:	X, 72 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;various industries;trades and crafts;razne industrije;obrti in rokodelstva;pulp;paper and board industry;industrija celuloze;papirja in kartona;
ID:	987559