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3878 Uppsatser om Pulp and paper mills - Sida 3 av 259
Ekonomiska konsekvenser av förändrad röttolerans vid Bravikens Pappersbruk :
The competition for Norway spruce pulp wood in Central Sweden increases, forcing the supply-structure of Holmen to face two important challenges. Firstly, it is of the outmost strategically importance to secure the long-term supply of Norway spruce pulp wood to the industries. Secondly, Holmen desires to increase the obtainable volume of Norway spruce pulp wood. This would enable the company to choose volumes in the lower price-segments and thereby decrease the dependency of costly marginal volumes.
As this work shows, one part in managing these challenges could be to lower the quality standards concerning root rot (Heterobasidium annosum).
Facts presented in the work shows that:
1. Technically, the TMP-industry of Braviken can handle a much more rotted pulp wood than that used today, although the cost of refinement increases.
Patent och företags storlek - finns det en tröskel till inträde?
Several studies have investigated the relationship between different measures of innovative activity, such as patent statistics and R&D expenditures and some have looked deeper into the differences between large and small firms regarding number of patents issued per employee or per R&D dollar. In this paper, the objective is to find out if there are any indications of a barrier to entry (due to economical factors, lack of knowledge etc) for small firms to get into the field of patent handling. The approach is to first set up a hypothesis based on some simple assumptions about how firms would make decisions about whether to apply for a patent or not and thereafter use econometric methods in an empirical investigation. The data used for this study are figures on number of employees, number of patents granted and R&D expenditures for the Swedish firms in the pulp and paper industry. The main conclusion is that, based on the analysis of the data from this rather limited group of firms, no such barrier can be seen..
Energieffektivisering av aerbo reningsprocess : Tillsats av biprodukter i skogsindustriellt avloppsvatten
In the production of pulp, paper and cardboard, a large amount of water is used daily. The water has to be purified in the internal purifying plant before it reaches the receiving body of water. In the biological purifying stage at the Stora Enso Skoghall mill, an aerated basin is used where the microorganisms, using oxygen, oxidize the organic material to carbon dioxide. The air is pumped from the bottom of the basin and the oxygen can then be transported from the air bubbles to the water through diffusion. The problem with aeration of waste water from the forest industry is that wood residues, such as fatty acids, are making the transport of oxygen in water more difficult.
Analysis of eucalyptus plantations on the Iberian Peninsula
This thesis analyses the prerequisites, profitability and competitiveness of eucalyptus plantation on the Iberian Peninsula and in Brazil. The thesis has a macro perspective and analyses a typical hectare of eucalyptus in each studied region.
A survey methodology was used as a strategy to cover a broad perspective using expert respondents.
The regions studied on the Iberian Peninsula were the ones found suitable for eucalyptus plantations from an economic point of view. The studied regions were Huelva in the South West of Spain, Galicia in the North West of Spain and Portugal.
Pelletering av tallspån : grundläggande studier
Wood pellets are an upgraded product of residuals from several wood processing industries, for example saw mills and pulp industries. The pellets are produced by pressing the milled and dried sawdust to cylindrical units with a higher density than the initial raw material. Pellets have great benefits compared to the raw material: high energy per volume, good transport and storage properties and homogeneity.
Several parameters collaborate in the whole process, which makes it complex. Wood is a heterogeneous material, chemically and structurally dependent on wood parts, habitat and storage procedures.
THE ROLE OF MERCHANDISER IN MANAGING THE SUPPLY CHAIN
This research project is based on observing and Analyzing the Role of a textile merchandiser in managing the supply chain of the Home Textiles In The Buying or retailing, in the Mill and with the Agents. The project also "highlights the comparative analysis of the practices by Followed merchandisers into the retailer side, mills and Those In The Agents', on the basis of the Functions Which Supports the supply chain. In the discussion, We Have highlighted Importance Of The Role Played by an agent and by the merchandisers of Buyer and Supplier in Different situation. By our research work we find out The Challenges face by merchandisers And Then we come up with sometime suggestions.This Research Project Has Been Developed by Contacting and Visiting Hemtex, Brink Textiles, by interviewing the merchandisers working in the Industries like Al-Abid Silk Mill . By Analyzing the data & the data through the visits and the interviews, this Research Project Has Been Combined to give in-depth knowledge about the Activities Which merchandisers performer in a mill and into buying a house..
Förhållandet mellan COD och TOC i skogsindustriella avlopp
Under tillverkningsprocessen i massa- och pappersindustrin bildas avloppsflöden i flera olika steg. Ett av de miljöbelastande utsläppen utgörs av organiskt material. Organiskt material kan mätas som biokemisk syreförbrukning (BOD), kemisk syreförbrukning (COD) eller som totalt organiskt kol (TOC). Analys av COD inkluderar ofta miljöfarliga ämnen (till exempel kvicksilver). Naturvårdsverket har under flera år aviserat att analysen kan komma att förbjudas och därmed blir analys av TOC allt mer vanligt.
"211 år kvar till jämställdhet" : Föräldraförsäkringens roll för ett jämställt Sverige
Det här är en uppsats om svenskt jämställdhetsarbete. Under lång tid har Sverige haft en familjepolitik med höga mål. Ett av de viktigaste målen idag handlar om jämställdhet mellan män och kvinnor. Uppsatsens syfte är att med hjälp av Mills problemuppdelning i allmänna problem och personliga bekymmer analysera föräldraförsäkringens roll för ett jämställt Sverige och huruvida föräldraförsäkringen kan leda till ökad jämställdhet.Vi har använt oss av Tillys teori om kategoriell ojämlikhet, Elias teori om etablerade och outsiders, Giddens struktureringsteori och Mills allmänna problem och personliga bekymmer. Vi har använt oss av en kvalitativ textanalys av lagen om föräldraledighet, tidigare forskning och statistik.Resultatet vi har kommit fram till är att föräldraförsäkringen är ett medel för att lösa ett allmänt problem, men att brister i dess utformning skapar personliga bekymmer hos föräldrarna.
Oförutsägbar fiktion : Narratologiska brott och kontraster i Quentin Tarantinos Pulp Fiction
Hösten 1753 utlyste drottning Lovisa Ulrikas Witterhetsakademi en tävling där de deltagande skulle skriva om ett (eller flera) av tre ämnen: en historisk uppsats på prosa, en skönlitterär behandling på prosa, och ett ?Poeme öfwer Konung Carl Gustafs Tåg med sin Krigshär öfwer Bälterna år 1658?. Ett av de bidrag som kom in till tävlingen, om än för sent för att delta, var Hedvig Charlotta Nordenflychts bidrag Konung Carl Gustafs tog öfwer Bält 1658.1 Hedvig Charlotta Nordenflycht var 1700-talets mest kända kvinnliga författare och känd för bland annat Den sörjande Turtur-Duvan, Fruentimrets försvar och Tankar om lovskrifter över de Döde, men allt hon skrev har inte fallit litteraturhistorikerna på läppen. Ett sådant exempel är Konung Carl Gustafs tog öfwer Bält, som sågats ganska grundligt..
Fire impact in the wood quality and a fertilization experiment in Eucalyptus plantations in Guangxi, southern China
Chinas government has a multifunctional program for a more sustainable forestry since 2000. This six key forest programs goal is to develop a more sustainable forest sector but also take environment consideration. The state forest administration in China has decided to create 5.8 million hectare of fast growing and high yield forest. Eucalyptus has showed to have good properties for pulp and timber production and therefore Eucalyptus plantations are under development in costal areas in southern China. By adding extra nutrients, growth can be enhanced in Eucalyptus plantations.
Analys av massapumps- och mixerarbete vid Metsä Board Sverige AB, Husums Fabriker : Energibesparingsåtgärder vid blekeri 4 & 5 med jämförelse mot ny utrustning
Husums plant has a selection of different pulp pumps at bleaching plant 4 and 5. The displacement- (HC-pump, Sund Defibrator PTD-60) and centrifugalpumps (MC-pump, MCA 42-200, MCP 30/20) are of interest in this report. The centrifugal pumps are controlled by throttle valves, which result in an energy loss. Chemical mixers are used to mix ClO2 into the pulp before proceeding into a holding tower where the bleaching process occurs.The energy demand of the different positions has been measured or calculated to be used in comparisons against new equipment. Quotations were requested and delivered from Valmet and Sulzer.
Förbränning av pellets framställda av defibrerad granråvara :
Fuel pellets are in Sweden mainly produced from sawdust and cutter shavings. Before the pelletising process the raw material is dried to attain consistent moisture content and ground up in a hammer mill. In the densification process (pelletising) the ground material is forced through holes in a rotating die. This heats up the wood particles which cause them to soften and self bond. After the process the pellets are cooled, sieved and bagged.
The milling process creates a wide range of particle sizes.
Vindpark Vänern : Fundamentteknik och Logistik
An analysis of a specific application of anaerobic wastewater treatment at a pulp and board mill, Stora Enso Skoghall, was carried out. A literature study was done and effluent wastewater from CTMP pulp production was analyzed. The analysis consisted of a broad constituent analysis and an anaerobic treatment trial. Results from these test where used to calculate the treatment effectiveness and resulting energy potential at the mill.The literature study and constituent analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial.
Kundlönsamhetsanalys som avbildande kalkyl och medskapande praktik: En fallstudie av Billerud
In recent years, customer profitability has become a focal point of academic discussions on business performance. However, researchers remain divided as to how evaluation of customers ought to be conducted, resulting in uncertainty of how accounting systems should be adapted to prevailing conditions. This paper aims to investigate the application of customer accounting techniques and the role they play in the organisational and commercial context in which they take place. In a case study of Billerud, a Swedish company providing materials and services for packaging solutions, the interplay between customer accounting techniques and customer relationship characteristics has been examined through the application of a theoretical framework developed by Lind and Strömsten. Particular emphasis has been put on deviations from the prescribed pattern of the framework.
Simulering av valkar i pappersrullar : och analys av de slappa stråk som uppkommer
A baggy paper web has parts that are longer than neighboring parts. One of the assumed reasons for bagginess is thickness variations of the paper. In the roll the thicker streaks then add up to form a ridge. In the ridges the paper is strained and during storage the strain may become permanent. When the paper unreeled it is then baggy.