| 摘要 |
An effective amount of at least one antifoulant may be added into a hydrocarbon fluid having at least one potentially fouling causing-component for reducing the fouling by the potentially fouling causing-component(s) as compared to an otherwise identical hydrocarbon fluid absent the antifoulant(s). The hydrocarbon fluid may be present within a location, such as but not limited to an ebullated bed hydrocracking unit feed, a separator, a vacuum distillation column, an atmospheric distillation column, and combinations thereof. The antifoulant(s) may have or include a hydrocarbon backbone attached to at least a first functional group. The hydrocarbon backbone may be or include, but is not limited to, an poly(alpha-olefin), a polyisobutylene, an ethylene-propylene copolymer, a styrene-butadiene copolymer, a polymethyl acrylate, a polyacrylate, and combinations thereof. The first functional group(s) may be polar functional group(s). |
| 主权项 |
1. A method comprising:
adding an effective amount of at least one antifoulant into a hydrocarbon fluid at a location selected from the group consisting of directly into an ebullated bed hydrocracking unit feed, into a separator, into a vacuum distillation column, into an atmospheric distillation column, and combinations thereof; wherein the hydrocarbon fluid comprises at least one potentially fouling causing-component; wherein the at least one antifoulant comprises a hydrocarbon backbone and at least a first functional group; wherein the hydrocarbon backbone is selected from the group consisting of a poly(alpha-olefin), a polyisobutylene, an ethylene-propylene copolymer, a styrene-butadiene copolymer, a polyacrylate, and combinations thereof; wherein the at least first functional group is a polar group, wherein the at least one antifoulant is selected from the group consisting of polyisobutylene succinic anhydride, polyalkylene maleic anhydride copolymers, polyalkylene succinate esters, polyalkylene phosphonic acids, polyalkylene thiophosphonic acids, polyalkylene thiophosphonic esters, polyalkylene phosphonate esters, polyalkylene phenols, polyalkylene dodecylbenzene sulfonic acid, ammonia neutralized dodecylbenzene sulphonic acid, alkylaryl sulphonic acids, tall oil imidazoline, alkylamide-imidazolines, magnesium oxide overbase, carbonated magnesium oxide overbase, fatty acid amides ethoxylates, alkylphenol/aldehyde resins, a sterically-hindered phenol, a nonylphenol, an ethoxy-propoxylated phenol, a formaldehyde resin, a phenol-formaldehyde resin, a reaction product between a sterically-hindered phenol with an amine, a reaction product between a sterically-hindered phenol with a polyamine, a reaction product between a sterically-hindered phenol with an imidazoline, and combinations thereof; and reducing the fouling by the at least one potentially fouling causing-component within the hydrocarbon fluid as compared to an otherwise identical hydrocarbon fluid absent the at least one antifoulant. |
