Sökning: "chemical industry"

Visar resultat 11 - 15 av 429 uppsatser innehållade orden chemical industry.

1. 11. Evaluation of Excess Heat Driven Carbon Capture Integrated at a Swedish Pulp Mill

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Frida Nilsson; [2023]
   Nyckelord :CCS; BECCS; pulp and paper industry; pulp mill; excess heat; MEA; HPC; AMP; DMSO; chemical engineering; environmental engineering; Technology and Engineering;

   Sammanfattning : As the atmospheric carbon dioxide keeps increasing, bioenergy with carbon capture and storage (BECCS) is getting increased attention as a measure to reduce the emissions of carbon dioxide. It is especially interesting in Sweden where the extensive paper and pulp industry constitutes point sources of biogenic carbon dioxide. LÄS MER

3. 12. Investigation of Milled Wood Lignin Extraction Using Enzymatic Hydrolysis for Application in Hydrophobic Barriers in the Food Packaging Industry

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Anna Wagne; [2023]
   Nyckelord :Lignin; extraction; hydrophobicity; chemical engineering; Technology and Engineering;

   Sammanfattning : The objective of this report is twofold: to optimise the extraction method of lignin from spruce altering a few process parameters and to investigate the use of lignin as a hydrophobic barrier in food applications. The process used was STEX (steam explosion) pretreatment followed by enzymatic hydrolysis and MWL (milled wood lignin) extraction using a mixture of dioxane-water. LÄS MER

4. 13. Construction and Control of a 3-axisAutomated Liquid Sampling UnitUtilizing Hybrid Stepper Motors

   Master-uppsats, KTH/Mekatronik och inbyggda styrsystem

   Författare :Arvid Bergvall; Pontus Lundman; [2023]
   Nyckelord :Mechatronics; Gantry; Stepper motor; Control; Linear Quadratic Regulator; Adaptive LQI; PID; Mekatronik; Gantry; Stegmotor; Reglerteknik; LQR; Adaptiv LQI; PID;

   Sammanfattning : High accuracy autonomous positioning systems are becoming increasingly important in today’s chemical industry because they can obtain precise experiment results automatically and hence allow lab technicians to focus on other tasks concurrently. One time consuming process is the process of sampling chemical test results into the correct container, especially when the tests are many and infrequent. LÄS MER

5. 14. Recommendations for Improving the Use of Risk Matrices in Coarse Risk Analyses

   Master-uppsats, Lunds universitet/Riskhantering (CI); Lunds universitet/Avdelningen för Riskhantering och Samhällssäkerhet

   Författare :Olga Selitski; Esko Roos; [2023]
   Nyckelord :Risk Matrix; Coarse Risk Analysis; Risk Assessment; Probability-Consequence Diagram; Guidance; Guidelines; Recommendations; Improvement.; Technology and Engineering;

   Sammanfattning : Risk matrices are tables with rows representing consequences, and columns representing frequencies. The risk matrix is considered a simple and convenient tool for visualizing risk. However, it has faced critique from the scientific community. LÄS MER

7. 15. Mathematical Modeling and Simulation of Cryogenic Liquid Hydrogen Storage

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Gusten Zandler Andersson; [2023]
   Nyckelord :Modeling; Simulation; Liquid Hydrogen; Storage tank; Modelica; Chemical engineering; Technology and Engineering;

   Sammanfattning : Liquid hydrogen is an attractive alternative to fossil fuels in the aviation industry, but storing it both before and during flights introduces many challenges pertaining to the cryogenic liquid conditions required. Having reliable models to predict the dynamical behavior inside the storage tank is therefore of great interest. LÄS MER