摘要:
Certain Mannich reaction products formed from the reaction of an alkyl substituted catechol, a polyamine, and an aldehyde are used to deactivate copper metal species contained in hydrocarbon fluids. Left untreated, such copper species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.
摘要:
Alkoxylated Mannich product compositions and methods of use of same as process antifoulants are disclosed. The alkoxylated Mannich products deactivate metals and inhibit oxygen promoted polymerization in hydrocarbons and petrochemicals.
摘要:
Certain Mannich reaction products (i.e., alkylated phenol, polyamine, and an aldehyde) are used to deactivate first row transition metal species contained in hydrocarbon fluids. Left untreated, such metals lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.
摘要:
This invention relates to processes and compositions for color stabilized distillate fuel oils which comprises an effective color stabilizing amount of (a) a tertiary amine having the formula ##STR1## wherein R and R' are the same or different alkyl groups having one to about six carbon atoms, and (b) a hydroxylamine having the formula ##STR2## wherein R and R' are the same or different and are hydrogen, alkyl, alkaryl or aralkyl groups, wherein the weight ratio of (a):(b) is from about 1:1 to about 99.7:0.3. Preferably, the alkyl, alkaryl and aralkyl groups of the hydroxylamine have from one to about twenty carbon atoms. It is further preferred that (a) is N,N-dimethylcyclohexylamine and (b) is N,N-diethylhydroxylamine.
摘要:
The present invention is directed to a method of reducing fouling and corrosion in furnaces during the thermal cracking of hydrocarbons. The method generally comprises adding to the hydrocarbon an effective amount of boron or boron compounds. The preferred boron materials are the oxides, borates, borate esters, peroxyborates, boranes, organoboranes, borazine and salts of boron oxides. The oxides, borates or salts thereof, are preferable in non-mono-alcohol solvents.
摘要:
The present invention is directed to antioxidant materials and their use in petroleum and petrochemical processes to reduce and/or control fouling problems specifically as regards hydrocarbons having a bromine number of greater than 10 and containing oxygen. The inventive antioxidant materials are composed of non-hindered or partially hindered phenols in combination with a strongly basic material such as an organo amine.
摘要:
The present invention is directed to a method of inhibiting the formation of coke during the elevated temperature cracking of hydrocarbons. The method generally comprises adding to the hydrocarbon an effective amount of an ammonium borate, particularly ammonium biborate and ammonium pentaborate. Preferably, the ammonium borates are in a glycollic solvent or water.
摘要:
This invention relates to methods and compositions for color stabilized distillate fuel oils which comprise adding an effective stabilizing amount of a combination of (a) a boron hydride-amine compound and (b) an organic silicon compound.
摘要:
The present invention is directed to an antioxidant material and its use in petroleum and petrochemical processes to reduce and/or control fouling problems specifically as regards hydrocarbons having a bromine number of 10 or less and containing oxygen. The inventive antioxidant material is 1-(2-aminoethyl) piperazine.
摘要:
Methods and compositions are provided for inhibiting the formation and deposition of pyrolytic coke on metal surfaces in contact with a hydrocarbon feedstock undergoing pyrolytic processing. Coke inhibition is achieved by adding a coke inhibiting amount of a combination of a boron compound and a dihydroxybenzene compound.