desulphurization and upgrading of oil to produce bunker fuels for use in the shipping industry; treatment of materials, namely, the desulphurization of refinery bottoms, intermediate streams, heavy oil, oil shale and bitumen; treatment of materials to remove of metals and acids from oil and to increase the API gravity of oil

'acid':41 'api':48 'bitumen':32 'bottom':24 'bunker':8 'desulphur':1,21 'fuel':9 'graviti':49 'heavi':27 'increas':46 'industri':15 'intermedi':25 'materi':18,35 'metal':39 'name':19 'oil':5,28,29,43,51 'produc':7 'refineri':23 'remov':37 'shale':30 'ship':14 'stream':26 'treatment':16,33 'upgrad':3 'use':11

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