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Alternative Design of Cooler Tower Inlet
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In order to cool gases from melting processes an evaporative gas cooling tower can be used. The gas is cooled by evaporated water droplets that are injected by nozzles. This method is suitable for high temperature gas and gases that contains high amount of dust particles. The problem with sulphuric acid is also diminished using this method. The current design of the tower redirects the gas a total of 235° and guide vanes at the top of the tower helps redirecting the gas so an even velocity distribution of the gas can be obtained which is important for the cooling and in order to avoid dust from clogging the system. Problems with the guide vanes do exist in form of dust build-up on the vanes which requires cleaning on a regular basis which might lead to high maintenance costs. In order to reduce these problems, Outotec initiated a redesign of the tower inlet which does not need the guide vanes or a design that are less dependent of them but still keeps an even velocity distribution. It does also discuss the impact of the water injection on the gas flow. This was realized by using Computational Fluid Dynamics as a tool for the investigations. After exploring some alternative geometries with different guide vanes configurations it was concluded that the present configuration of the tower has the best performance and that the water injection do have an impact on the flow.

Place, publisher, year, edition, pages
2016.
Keyword [en]
Technology
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-54588Local ID: b8849d2e-5216-4cec-8e2a-39ee887a38afOAI: oai:DiVA.org:ltu-54588DiVA: diva2:1027970
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Supervisors
Examiners
Note
Validerat; 20160516 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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