00000nam 2200000za 4500 9.840342 CaOODSP 20221107151822 cr ||||||||||| 170726s1967 onca ob f000 0 eng d CaOODSP eng n-cn--- M38-8/37E-PDF M38-8/37 Lee, G. K. Control of oil-ash slagging by an additive [electronic resource] / G.K. Lee and E.R. Mitchell, Fuels and Mining Practice Division. Ottawa : Queen's Printer, 1967. p. 103-106 : ill. Reprint series ; RS 37 Cover title. "Reprinted from Pulp and Paper Magazine of Canada, Technical Section, Vol. 68, N. C Convention 1967." Historical publication digitized from print 2017 [by Natural Resources Canada]. Includes bibliographical references. "Conventional cleaning methods were found to be inadequate for removing slag deposits from high-temperature heat-transfer surfaces of oil-fired boilers. The research project described in this paper first established that minute interconnecting voids in slag deposits were sufficiently large to allow penetration by water treated with a suitable surfactant. From this was developed a practical water washing procedure that has been adopted as routine maintenance in certain marine boilers. Subsequently, fundamental combustion studies established that the mechanism of deposition for indigenous oil-ash constituents is primarily one of molecular diffusion. This finding indicates that new and radical burner and boiler design concepts are needed to overcome operational problems when untreated high-vanadium fuel oils are burned. Also described is a program of research on fuel oil additives to alleviate the superheater slagging problem. This includes the evaluation of many additive materials in a laboratory combustion rig and the development of a particular magnesia-alumina formulation that has promise as a practical and effective additive. Several large power utility boilers are now operating regularly on additive formulations developed through this research program, and preliminary reports indicate a high degree of success"--p. 103. gccst Heating gccst Petroleum Mitchell, E. R. Canada. Natural Resources Canada. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Reprint series - Dept. of Energy, Mines and Resources, Mines Branch ; RS 37 (CaOODSP)9.834843 PDF 2.96 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-37-eng.pdf 300116