tank cleaning tank cleaning jami123 (Chemical) (OP) 29 Jan 17 12:29 please help me to find a good procedure tank cleaning tank is filled with heavy cycle oil(almost solid ) we want remove it without any cutting RE: tank cleaning LittleInch (Petroleum) 29 Jan 17 19:31 At the top of the page ther eis a search bar. Type "tank cleaning" into this and click on the results - this has been discussed many times. Please define "heavy cycle oil" - do mean asphalt? please be a bit more precise Why would you need to cut it? Please also provide some more background information otherwise all you will get is general responses, so things like: Product ( be as precise as possible) Is the tank fixed roof or floating? Can you get entry into using manholes - if so how many and size What is size of tank? Is there a clean out door or specificed area to cut Is the tank lined? Are the contents dangerous to health or could create an explosive atmosphere? Where in the world are you? What have you done before to clean it? Are you the owner, operator, supervisr or contractors? How long has it been in service? Why clean it now? All helps us to help you... Remember - More details = better answers Also: If you get a response it's polite to respond to it. RE: tank cleaning jami123 (Chemical) (OP) 30 Jan 17 07:00 currently used to store fcc column bottom product having dia 24.4m height 17.1m total gross capacity 7990m3 40-50% sludge & catalyst fine particles.material is highly viscous and heavy. tank is fixed cone roof and inverted cone bottom.Tank claddes with 40mm insulation externally. RE: tank cleaning geesamand (Mechanical) 10 Feb 17 12:27 Is this a one-time issue or is it recurring? Sounds like a mixer of appropriate design might be the key to avoiding this settled condition in the first place. The list of mixer manufacturers who can manage extremely high viscosity materials is quite short. This is a specialized mixing application and a lab test is probably in order.