SYSTEM FOR CLEANING OF TANKS FOR STORAGE AND TRANSFER OF OIL PRODUCTS Russian patent published in 2014 - IPC B08B9/08 

FIELD: process engineering.

SUBSTANCE: invention relates to cleaning of tanks for storage and transportation of oil products and can be used in oil, chemical industries, etc. Proposed system comprises means for preparation of flushing solution, hydrodynamic cleaning, discharge of residual contaminants, power supplies and control unit. In compliance with this invention, additional means for cleaning and recovery of oil product residues, those of detergents and contaminants. Said means are composed of mobile modules connected by pipelines. First module comprises first accumulation tank to prepare and use flushing solution and first pump to feed said flushing solution via flexible pipeline to second module inlet. It includes, mainly, flushing and intake devices integrated in one unit to be placed in the tank to be cleaned via upper neck. Third module comprises second accumulation tank equipped with vacuum unit for application of flushing solution. Its inlet is connected via flexible pipeline with intake device outlet while its outlet is connected via second pump with the fourth module inlet. Fourth module comprises coarse filter, settling tank with floating oil product intake and pipes at its central and bottom parts for discharge of used flushing solution and sludge. Fifth module comprises third pump with inlet connected with floating intake outlet. Outlet is connected via precleaner and fine filter with third accumulation tank inlet. Sixth module comprises fourth pump with inlet connected with pipe at settling tank mid part and outlet connected via coalescing and adsorption filters with fourth accumulation tank for cleaned flushing solution to be connected via pipeline with the first accumulation tank. Seventh module comprises container for sludge recovery with inlet connected with settling tank bottom pipe. The plant comprises also power supplies and control unit.

EFFECT: higher efficiency of cleaning and recovery.

1 dwg