Optimal batch hydroliquefaction of sulcis coal

✍ Scribed by Mauro Moresi; Galliano Variali

• Book ID: 103090833
• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 474 KB
• Volume: 64
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(85)90054-7

✦ Synopsis

The hydroliquefaction of a high-sulphur, high-ash Italian coal (Sulcis, Sardinia) was studied in a 1 .5dm3 batch autoclave at different levels of coal size (89--664pm), catalyst/coal ratio (O-24 mg 9-l) and temperature (300--4Oo"C), by using a factorial technique. The yields of this process werefound to be mainly dependent on temperature and, to a minor extent on catalyst/coal ratio. By using the only statistically significant factors, it was possible not only to express the observations with a mean standard error < 13% by means of quadratic equations but also to determine a set of alternative conditions yielding 90% coal liquefaction with 50% oil yield and 3040%asphalteneyields; sulphur removal as H,S > 80% and sulphur residua in the asphaltene and liquid fractions virtually zero.