초록 ▼

Deposit formation on the contact surfaces of structures containing heated hydrocarbon fluids such as refinery units, particularly units associated with the distilling process such as preheating stages, is inhibited by incorporating in the feed stock from 0.0001 to 0.01 weight percent of the combinat

Deposit formation on the contact surfaces of structures containing heated hydrocarbon fluids such as refinery units, particularly units associated with the distilling process such as preheating stages, is inhibited by incorporating in the feed stock from 0.0001 to 0.01 weight percent of the combination of thiophene-containing polycondensed aromatic/naphthenic compounds of number average molecular weight (n) from 200 to 1000 and a macrocyclic polyamine of 2 to 8 nitrogen atoms per molecule and, if desired, at least one other additive such as an oil-soluble dispersant, antioxidant, antipolymerant, anti-foulant and mixtures thereof into said hydrocarbon stream.

대표청구항 ▼

A method for inhibiting deposit formation on the contact surfaces of structures confining heated hydrocarbon fluids comprising the step of introducing into said hydrocarbon fluids at least an inhibiting amount of thiophene-containing polycondensed aromatic/naphthenic compounds of number average mole

A method for inhibiting deposit formation on the contact surfaces of structures confining heated hydrocarbon fluids comprising the step of introducing into said hydrocarbon fluids at least an inhibiting amount of thiophene-containing polycondensed aromatic/naphthenic compounds of number average molecular weight (n) from 200 to 1,000 and a macrocyclic polyamine having 2 to 8 nitrogen atoms per molecule.