Test rig design to simulate ashlock valve erosion in coal gasification systems

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dc.contributor.advisorBall, Anthonyen_ZA
dc.contributor.authorWillmott, Simon Spenceren_ZA
dc.date.accessioned2016-09-25T16:11:04Z
dc.date.available2016-09-25T16:11:04Z
dc.date.issued1984en_ZA
dc.description.abstractThe erosion of ashlock hopper valves in coal gasification systems, and the maintainance downtime resulting from this erosion, is a cause of considerable concern to the coal conversion industry. After an assessment of the factors considered relevant to solid particle erosion as presented in literature, a design for a laboratory test apparatus to closely simulate the in-service problem was proposed. A test rig prototype, reproducing service conditions of temperature, pressure and geometry, was constructed and preliminary testing conducted. Various problems impairing the efficient operation of the test facility became apparent and these, together with the proposed solutions and modifications to the prototype rig, are discussed. Both room temperature and elevated temperature (400°C) erosion tests were conducted on the hardfacing seat material presently used on site as well as a on selection of common engineering materials. Optical and scanning electron microscopy (SEM) studies revealed a close correlation between in-situ and laboratory erosion damage, suggesting that the test apparatus is a valid simulation of the service problem.en_ZA
dc.identifier.apacitationWillmott, S. S. (1984). <i>Test rig design to simulate ashlock valve erosion in coal gasification systems</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/21861en_ZA
dc.identifier.chicagocitationWillmott, Simon Spencer. <i>"Test rig design to simulate ashlock valve erosion in coal gasification systems."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1984. http://hdl.handle.net/11427/21861en_ZA
dc.identifier.citationWillmott, S. 1984. Test rig design to simulate ashlock valve erosion in coal gasification systems. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Willmott, Simon Spencer AB - The erosion of ashlock hopper valves in coal gasification systems, and the maintainance downtime resulting from this erosion, is a cause of considerable concern to the coal conversion industry. After an assessment of the factors considered relevant to solid particle erosion as presented in literature, a design for a laboratory test apparatus to closely simulate the in-service problem was proposed. A test rig prototype, reproducing service conditions of temperature, pressure and geometry, was constructed and preliminary testing conducted. Various problems impairing the efficient operation of the test facility became apparent and these, together with the proposed solutions and modifications to the prototype rig, are discussed. Both room temperature and elevated temperature (400°C) erosion tests were conducted on the hardfacing seat material presently used on site as well as a on selection of common engineering materials. Optical and scanning electron microscopy (SEM) studies revealed a close correlation between in-situ and laboratory erosion damage, suggesting that the test apparatus is a valid simulation of the service problem. DA - 1984 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1984 T1 - Test rig design to simulate ashlock valve erosion in coal gasification systems TI - Test rig design to simulate ashlock valve erosion in coal gasification systems UR - http://hdl.handle.net/11427/21861 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21861
dc.identifier.vancouvercitationWillmott SS. Test rig design to simulate ashlock valve erosion in coal gasification systems. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1984 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21861en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMaterials Engineeringen_ZA
dc.titleTest rig design to simulate ashlock valve erosion in coal gasification systemsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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