Patent application number | Description | Published |
20100126842 | HIGH TEMPERATURE NAPHTHENIC ACID CORROSION INHIBITION USING ORGANOPHOSPHOROUS SULPHUR COMPOUNDS AND COMBINATIONS THEREOF - The present invention relates to the field of processing hydrocarbons which causes corrosion in the metal surfaces of processing units. The invention addresses the technical problem of high temperature naphthenic acid corrosion and sulphur corrosion and provides a solution to inhibit these types of corrosion. The composition formed by reacting high reactive polyisobutylene (HRPIB) with phosphorous pentasulphide in presence of catalytic amount of sulphur provides high corrosion inhibition efficiency in case of high temperature naphthenic acid corrosion inhibition and sulphur corrosion inhibition. The invention is useful in all hydrocarbon processing units, such as, refineries, distillation columns and other petrochemical industries. | 05-27-2010 |
20110160405 | EFFECTIVE NOVEL POLYMERIC ADDITIVE FOR INHIBITING NAPTHENIC ACID CORROSION AND METHOD OF USING THE SAME - The present invention relates to the field of inhibition of metal corrosion in hot acidic hydrocarbons, wherein acidity is derived from presence of naphthenic acid. More particularly, it relates to a polymeric additive for inhibiting high temperature napthenic acid corrosion, wherein said polymeric additive is polymeric phosphate ester of polyisobutylene succinate ester or oxide derivative of polymeric phosphate ester of polyisobutylene succinate ester. A polymeric phosphate ester of polyisobutylene succinate ester which is capable of acting as naphthenic acid corrosion inhibitor by inhibiting naphthenic acid corrosion in crude oil/feedstock/hydrocarbon streams containing naphthenic acid, and demonstrating higher thermal stability at elevated temperature varying from about 200° C. to about 400° C. [about 400° F. to about 750° F.] is disclosed. | 06-30-2011 |
20110214980 | NEW ADDITIVE FOR INHIBITING ACID CORROSION AND METHOD OF USING THE NEW ADDITIVE - The present invention relates to the field of corrosion inhibition in hydrocarbon fluid processing units. The present invention comprises a new additive for inhibiting acid corrosion comprising polymeric thiophosphate ester, which is obtained by reaction of a polymer compound having mono, di or poly hydroxyl group, preferably polymer compound which is hydroxyl-termination, more preferably said polymer compound comprising hydroxyl-terminated polyisobutylene or polybutene and phosphorous pentasulphide. Said polymeric thiophosphate ester is further reacted with any oxide selected from group consisting of ethylene oxide, butylenes oxide or propylene oxide or such other oxide, preferably ethylene oxide, capably forming ethylene oxide derivative of thiophosphate ester. The invention is useful effecting acid corrosion inhibition on the metal surfaces of a distillation unit, distillation column, trays, packing and pump around piping. | 09-08-2011 |
20120045361 | Effective Novel Non-Polymeric and Non-Fouling Additive for Inhibiting High-Temperature Naphthenic Acid Corrosion and Method of Using the Same - The present invention relates to inhibition of high temperature naphthenic acid corrosion occurring in hydrocarbon processing units. The invention provides an effective novel non-polymeric and non-fouling additive for inhibiting high-temperature naphthenic acid corrosion, comprising an effective corrosion-inhibiting amount of a second phosphate ester wherein said second phosphate ester is obtained by reacting a first phosphate ester with an oxirane compound selected from the group consisting of butylene oxide, ethylene oxide, propylene oxide or any other oxirane compound or a combination thereof, preferably with butylene oxide, capably yielding said second phosphate ester, having a structure A or B, | 02-23-2012 |
20120055848 | Method of scavenging hydrogen sulfide from hydrocarbon stream - The invention is related to hydrogen sulfide scavenging additive, capable of scavenging hydrogen sulfide in hydrocarbons by forming water soluble scavenged products which are capable of getting separated from hydrocarbon even at acidic pH without causing fouling and decomposition problems, consisting of aldehyde or aldehyde and polyethylene glycol [PEG], and wherein said aldehyde is glyoxylic acid. The invention is also related to a method of scavenging hydrogen sulfide employing present scavenging additive. | 03-08-2012 |
20120285865 | Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate - An additive capable of avoiding formation of impurities and capable of removing or dissolving impurities formed and accumulated at the interphase of organic and aqueous layers on reaction between calcium naphthenate and sulfur compound including H | 11-15-2012 |
20130233770 | Additive and Method for Removal of Calcium from Crude Oils Containing Calcium Naphthenate - There is provided an additive and method for removal of calcium from crude oil or its blends containing calcium naphthenate at low pH as well as at high pH. Particularly, there is also provided an additive and method for removal of calcium from crude oil or its blends containing calcium naphthenate under basic or alkaline conditions and at low pH as well as at high pH varying from about 5 to 11. | 09-12-2013 |
20130240409 | Additive Composition and Method for Scavenging Hydrogen Sulfide in Hydrocarbon Streams - The present invention relates to hydrogen sulfide scavenging additive composition comprising glyoxal and a polymer compound which is polymer made from propylene oxide, which is capable of scavenging or removing hydrogen sulfide in hydrocarbons or hydrocarbon streams without causing any problem. The present invention is also relates to a method of scavenging hydrogen sulfide employing present scavenging additive composition comprising glyoxal and a polymer compound which is polymer made from propylene oxide. The present invention is also relates to a method of using hydrogen sulfide scavenging additive composition comprising glyoxal and a polymer compound which is polymer made from propylene oxide. | 09-19-2013 |
20140183102 | Additive and Method for Removal of Calcium from Crude Oils Containing Calcium Naphthenate - There is provided an additive and method for removal of calcium from crude oil or its blends containing calcium naphthenate at low pH as well as at high pH varying from 5 to 11, preferably from 6 to 11, more preferably from 7 to 11, wherein the additive is glyoxal and said pH is of the wash water for crude oil processing systems. | 07-03-2014 |
20140200375 | Additive Composition for Control and Inhibition of Polymerization of Styrene, and Method of Preparation and Use Thereof - The present invention relates to additive composition for control and inhibition of polymerization of styrene, wherein the composition comprises amine and quinone methide, and wherein the amine is polymerization non-inhibitor amine. In one embodiment, the present invention relates to method of preparation and use of additive composition to control and inhibit polymerization of styrene, wherein the composition comprises amine and quinone methide, and wherein the amine is polymerization non-inhibitor amine. In another embodiment, the present invention relates to additive composition for control and inhibition of polymerization of styrene, wherein the composition comprises oxide treated derivative of amine and quinone methide, and wherein the amine is polymerization non-inhibitor amine, and to the method of preparation and use thereof. | 07-17-2014 |
20140316172 | Amine Based Additive Composition for Control and Inhibition of Polymerization of Styrene, and Method of Use Thereof - The present invention relates to amine based additive composition for controlling and inhibition of polymerization of aromatic vinyl monomers including styrene comprising (a) one or more of nitroxide (i.e. nitroxyl) compounds; and (b) one or more of aromatic nitro compounds, characterized in that the said composition further comprises one or more of (c) amines, wherein said amine is selected from a group comprising (i) hydroxyl alkyl tertiary amines, (ii) tertiary alkyl amines, (iii) hydroxyl alkyl primary amine; and (iv) mixture thereof. In one embodiment, the present invention also relates to method of using presently provided composition. In another embodiment, the present invention also relates to method of controlling and inhibiting polymerization of aromatic vinyl monomers including styrene by employing presently provided composition. In still another embodiment, the present invention also relates to method of preparation of presently provided composition. | 10-23-2014 |
20140350313 | Additive Composition for Control and Inhibition of Polymerization of Aromatic Vinyl Monomers, and Method of Use Thereof - The present invention relates to an improved additive composition for control and inhibition of polymerization of aromatic vinyl monomers including styrene comprising one or more of aromatic nitro compounds and one or more of aliphatic tertiary amines. In one embodiment, the present invention also relates to method of use of presently provided composition. In another embodiment, the present invention also relates to method of controlling and inhibiting polymerization of aromatic vinyl monomers including styrene by employing presently provided composition. In still another embodiment, the present invention also relates to method of preparation of presently provided composition. | 11-27-2014 |
20140364660 | Amine and Nitroxide Based Additive Composition for Control and Inhibition of Polymerization of Styrene, and Method of Use Thereof - The present invention relates to additive composition for controlling and inhibition of polymerization of aromatic vinyl monomers including styrene comprising (a) one or more of nitroxide (i.e. nitroxyl) compounds, and characterized in that the said composition further comprises one or more of (b) aliphatic amines selected from a group comprising tertiary amines, secondary amines and primary amines. In one embodiment, the present invention also relates to method of use of presently provided composition. In another embodiment, the present invention also relates to method of controlling and inhibiting polymerization of aromatic vinyl monomers including styrene by employing presently provided composition. In still another embodiment, the present invention also relates to method of preparation of presently provided composition. | 12-11-2014 |
20140364662 | Amine Based Additive Composition for Control and Inhibition of Polymerization of Aromatic Vinyl Monomers, and Method of Use thereof - The present invention relates to an improved amine based additive composition for control and inhibition of polymerization of aromatic vinyl monomers including styrene comprising one or more of the quinone methide or derivatives thereof, one or more of nitroxide compounds and further comprising one or more of aliphatic tertiary amines. In one embodiment, the present invention also relates to method of use of presently provided composition. In another embodiment, the present invention also relates to method of controlling and inhibiting polymerization of aromatic vinyl monomers, particularly of styrene by employing presently provided composition. In still another embodiment, the present invention also relates to method of preparation of presently provided composition. | 12-11-2014 |