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JP4630546B2 |
In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling in a coker...
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JP4607870B2 |
Thiol-substituted carboxylic acids or their derivatives are used as feed additives for protecting the metal walls of refinery units from corrosion by naphthenic acids . A method for protecting the metal walls of a refinery unit from corr...
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JP2010538148A |
Corrosion may be inhibited in a separation unit by treating at least one surface of the separation unit with a corrosion inhibitor. The corrosion inhibitors are those having a general formula: wherein each R is the same or different; eac...
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JP4583173B2 |
A method to quantify the conjugated dienes in a feedstream including the steps of dissolving 4-methyl-1,2,4-trazoline-3,5-dione (MTAD) in said feedstream, and determining the molar concentration of said conjugated dienes and/or the carbo...
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JP4547745B2 |
The process comprises the separation of a petrol cut containing sulfur into light and heavy fractions, the cut-off point being chosen to maximize the olefin content in the light fraction, hydrodesulfuration of the light fraction using a ...
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JP2010100779A |
To provide a method for preventing stain, by which the formation of insoluble carbonaceous substances is suppressed when hydrocarbon oil containing pyrolysis oil, in particular, a straight-run kerosene-gas oil fraction containing pyrolys...
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JP4443419B2 |
The present invention relates to a method for determining the source of fouling in petroleum thermal conversion process units. More particularly, the invention distinguishes whether fouling occurs due to feed entrainment of small feed dr...
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JP4410856B2 |
The present invention includes a method for blending two or more petroleum feedstreams, petroleum process streams, or combination thereof, at least one of which includes the solute asphaltenes so that the asphaltenes remains a solute. Th...
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JP2010501333A |
HSP crude oil is used as process stream in crude oil storage tanks to address sludge levels both by cleaning sludge accumulations and preventing any significant sludge build up when used on a regular basis. HSP crude oil is also used to ...
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JP2010501667A |
A high solvent power (HSP) crude oil is added to a blend of incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSP component dissolves asphaltene precipitates before coking affects heat exchan...
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JP4372243B2 |
A method for enhancing the protection of high temperature alloys containing iron, nickel and chromium against high temperature corrosion by carburization or metal dusting comprising: (a) deposition of a thin layer of a metal selected fro...
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JP4278514B2 |
An improved centrifugally-cast tube is provided, along with a related method and apparatus of making the tube. The tube includes a plurality of grooves and bosses that are mechanically machined into an interior surface of the tube, such ...
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JP4280415B2 |
A method is disclosed for mitigating fouling and reducing viscosity in primary fractionators and quench sections of ethylene plants by adding to a hydrocarbon stream a mono and/or a polyalkyl-substituted phenol-formaldehyde resin having ...
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JP4238948B2 |
An Anti-gelling agent for a hydrocarbon mixture containing a conjugated diene, which comprises (a) at least one compound selected from the group consisting of compounds having an NO radical in the molecule, and precursor compounds capabl...
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JP2008266518A |
To efficiently remove hard carbon formed in a vessel to be when the reforming operation of a heavy oil reformer is halted.The heavy oil reformer is of such a system that a mixed fluid of water and heavy oil under high temperature and hig...
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JP4170984B2 |
A method for mitigating fouling in a wash unit used in a hydrocarbon cracking process wherein the fouling is due to the presence of polymers and deposits thereof formed by condensation of carbonyl compounds contained within a feed stream...
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JP4142501B2 |
To supply a proper amount of an oxidant for oxidizing, decomposing, and removing coke deposited in a heavy oil reforming apparatus by measuring the supply timing of the oxidant, in producing a reformed fuel from a heavy oil by mixing and...
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JP4115034B2 |
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JP4047776B2 |
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JP2008007721A |
To provide a method for processing of the cleaning treatment oil in the distillation column in the heavy oil thermal cracking apparatus.The method for processing of the cleaned treatment oil after cleaning of the produced oil by thermal ...
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JP2007537345A |
A method for upgrading heavy oils by contacting the heavy oil with an inhibitor additive and then thermally treating the inhibitor additized heavy oil. The invention also relates to the upgraded product from the inhibitor enhanced therma...
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JP2007537347A |
A method for upgrading heavy oils by contacting the heavy oil with an inhibitor additive and then thermally treating the inhibitor additized heavy oil. The invention also relates to the upgraded product from the inhibitor enhanced therma...
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JP2007537346A |
A method for upgrading heavy oils by contacting the heavy oil with an inhibitor additive and then thermally treating the inhibitor additized heavy oil. The invention also relates to the upgraded product from the inhibitor enhanced therma...
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JP2007302875A |
To provide a system and a method for removing coke deposits from a wall of high-temperature passage in which a hydrocarbon fuel exists. The coke deposits are removed from the wall of the high-temperature passage of a heat exchanger 16 or...
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JP2007532745A |
Method of combating the corrosion caused by naphthenic acids to the metal walls of a refining unit, comprising the use of a polysulphide having an alkyl radical containing between 2 and 5 carbon atoms.
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JP3974188B2 |
A catalytic reforming process using a halided zeolite catalyst containing platinum in a metal-coated reactor system where, prior to catalyst loading and reforming, halide acid is removed from the catalyst. The process comprises providing...
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JP3962919B2 |
To provide a metal anticorrosive with which the corrosion of device metal in a vapor generation device or a petroleum refining/petroleum chemical process can sufficiently be prevented even if its amount to be added is small and to provid...
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JP2007520631A |
A metal dusting resistant composition comprises an alloy capable of forming a thermally stable titanium carbide coating on its surface when exposed to a carbon supersaturated environment and, a protective coating on the alloy surface com...
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JP2007520611A |
Inhibition of corrosion, due to the presence of naphthenic acids, in crude petroleum oils in refinery plant is achieved by addition of alkyl mercaptan(s) in which the mercaptan function is adjacent to a tertiary carbon. Inhibition of cor...
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JP2007092077A |
To provide an improved technology of catalytic reforming under conditions of low sulfur.A method for reforming hydrocarbons comprises coating a part of a reactor system with a material more resistant to carburization, reacting the materi...
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JP2007508437A |
Naphthenic acid corrosivity of hydrocarbon feedstocks is correlated with the chemical composition of naphthenic acids, and especially with a ratio between an alpha fraction and a beta fraction of naphthenic acids. Contemplated plants, co...
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JP2007504358A |
A composite tube having a corrosion resistant member and a load-bearing member is provided. The corrosion resistant member is a Cu—Al alloy and has a wall thickness of at least 0.5 mm, while the load-bearing member is a Fe, Ni or Co ba...
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JP3847771B2 |
To provide a more effective method for decreasing acidity and corrosivity of whole crude oil or fractions thereof so as to reduce material treating problems accompanied with treatment of acidic crude oil and to decrease emulsion formatio...
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JP3847837B2 |
To inhibit the corrosion of a piping or the like by a high temperature naphthenic acid-contg. hydrocarbons, by adding a corrosion-inhibiting amount of each of a phosphate ester expressed by a specific formula and an org. polysulfide to t...
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JP3846632B2 |
To provide an antifoulant which can efficiently prevent the production of fouling in an installation for treating a hydrocarbon, such as a crude oil-preheating apparatus system, in a small addition amount at a low treatment cost without ...
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JP3839849B2 |
PCT No. PCT/US96/13688 Sec. 371 Date Sep. 15, 1998 Sec. 102(e) Date Sep. 15, 1998 PCT Filed Aug. 23, 1996 PCT Pub. No. WO97/08270 PCT Pub. Date Mar. 6, 1997The invention relates to processes for treating acidic crudes of fractions thereo...
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JP3832305B2 |
To obtain an antifouling agent free from amines, with which fouling is effectively prevented with a small amount of its addition at a low treating cost in hydrocarbon-treating apparatus such as a crude oil pre-heater. This antifouling ag...
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JP2006241181A |
To provide a method for preventing fouling in a heat exchanger by inhibiting the precipitation of sediment in the heat exchanger for cooling the residual oil of a hydrogenation-desulfurizing decomposition process, containing a large amou...
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JP3819431B2 |
PCT No. PCT/US96/13688 Sec. 371 Date Sep. 15, 1998 Sec. 102(e) Date Sep. 15, 1998 PCT Filed Aug. 23, 1996 PCT Pub. No. WO97/08270 PCT Pub. Date Mar. 6, 1997The invention relates to processes for treating acidic crudes of fractions thereo...
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JP3745973B2 |
To provide a fuel additive for preventing a slagging caused by an ash in a fuel such as coals or oil cokes, on burning and a method for burning the fuel using the same. This fuel additive consisting of a composition obtained by dispersin...
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JP2006504867A |
A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0-15 Si 0-6 Mg 0-6 one or more of the gr...
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JP3692449B2 |
To provide a hydrogen chloride production-preventing agent in a crude oil atmospheric pressure distillation unit by preventing the production of hydrogen chloride itself, not by neutralizing the produced hydrogen chloride and without exh...
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JP2005213369A |
To provide a fouling prevention agent and a fouling prevention method which exhibit a sufficient fouling prevention effect even on the feedstock oil containing a large amount of polymerizable olefins in petroleum refining and petrochemic...
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JP2005523378A |
The levels of iron sulfide present in a conduit, such as a pipeline, are reduced by contacting the conduit, on an inner surface, with a composition obtained from an aqueous solution containing at least one compound of Formula (I) and at ...
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JP2005519188A |
A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0-15 Si 0-6 Mg 0-6 one or more of the gr...
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JP3625949B2 |
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JP2005048175A |
To provide a method for effectively preventing a heat exchanger which is used in a petrochemical plant or polyolefin production plant, from fouling, and suppressing decrease of performance, stably operatable for long time without a sacri...
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JP3597770B2 |
A composition for an anti-scale-forming agent includes oil-based polyalkylenes, amines phosphorous and oxygen in a polymer for providing dispersivity and anti-oxidation and having the following formula:By integrating both characteristics...
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JP2004252781A |
To form modeling data with high accuracy which reflect a nonlinear relation between a corrosion velocity and an input variable even when the term to acquire a corrosion velocity and a term to acquire an input variable are widely differen...
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JP2004231679A |
To provide a method for heating a hydrocarbon with which sticking of stains is suppressed even when a monomer component or a chloride is contained and a method for preventing the stains from sticking when the hydrocarbon is heated in rel...
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