Automatic control system of sludge discharge interval for oil purifier

• Published in: JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN Vol. 27; no. 5; pp. 409 - 414
• Main Authors: Moriguchi, Masahiro, Tanaka, Yasuhisa
• Format: Journal Article
• Language: Japanese
• Published: The Japan Institute of Marine Engineering 1992
• ISSN: 0388-3051; 1884-4758
• DOI: 10.5988/jime1966.27.409

Oil Purifier has been so far the most important marine auxiliary machine and has played the role of purifying the fuel oil and lubricating oil of main engines and generators. By the way, when we consider the condition of oil to be treated by Oil Purifier, we find that the content of demand for recent petroleum products is greatly changing. In order to cope with this situation, it is the present codition that we have made best efforts for improvement and betterment of petroleum refinery technique and consequently a deterioration of heavy fuel oil used in vessels has been brought about. Giving an example of the main things of the deterioration of heavy fuel oil, the followings are cited; 1: Increased viscosity (maximum: 700 cSt/50°C) 2: High density (the density of some heavy fuel oil exeeds 1.0g/l) 3: High concentration sludge 4: Mixing of FCC catalyst In consideration of these conditions, not to mention betterment of Oil Purifier, the developement of heavy fuel oil treating dystem based on the new idea combining various systems including the Oil Purifier is urgently needed. On the one hand, regarding the lubricationg oil, with the change of quality of fuel oil and increased output of main engine, a further superior detergency and oxidation stability are demanded and as a result of this, various additives are developed and used. Moreover, in order to improve an economy in connection with shipping service, a shipping service by small number persons as represented by pioneership is now becoming a mainstream. Judging from this point of view, a further improved reliability and labor saving of maintenance work are strongly demanded. As mentioned in the above, the environment surrounding Oil Purifier is getting more harsh in comparisons with the former times. However, among various countermeasures now being taken to these problems, as the system which we are now developing is considered to display a great power in improving the reliability and the labor saving of the inside work in vessels, we would like to present to you our new system 'The Oil Purifier Sludge Discharge Intaval Automatic Setting System'.