935results about "Treatment apparatus corrosion/fouling inhibition" patented technology

A process for upgrading whole crude oil utilizing a recovery fluid, depressurizing an extracted whole crude oil / recovery fluid mixture in a step-wise fashion, and subsequently contacting at least a portion of the whole crude oil with supercritical water fluid to produce high value crude oil having low sulfur, low nitrogen, and low metallic impurities for use as hydrocarbon feedstock.

The invention provides a water-soluble imidazoline amide corrosion inhibitor, a preparation method thereof and a using method thereof, and belongs to the technical field of oil refining. The corrosion inhibitor consists of the following components in percentage by mass: 10 to 30 percent of water-soluble imidazoline amide, 0 to 15 percent of ethylene diamine, 0 to 20 percent of ammonia water with a mass concentration of 25 to 28 percent, 0 to 20 percent of ethanol and 40 to 90 percent of water, wherein the water-soluble imidazoline amide is prepared by the amidation reaction and the ring-closing reaction of polyethylene polyamines, glacial acetic acid and fatty acid serving as raw materials and toluene serving a solvent. When the corrosion inhibitor is continuously added to the top part of a primary distillation tower, the top part of a atmospheric distillation tower, the top part of a vacuum distillation tower or the top part of a hydrogenation fractional distillation tower of an oil refinery, the corrosion of a HCL-H2S-H2O medium on the top part of the tower is inhibited, and simultaneously, the quality of products on the top part of the tower is not affected. In the method for preparing the corrosion inhibitor, water is used as the solvent, so that the method has the advantages of being safely used, having low cost and facilitating the addition of a neutralizing agent.

The invention discloses a agglomerating inhibiting agent, preparing method and application thereof. The agglomerating inhibiting agent is selected from one or more hydrogenizating upgrading products of hydrocarbon mixture of coal oil, ethylene tar oil, catalytic crackingre cycle stock, catalytic crackingre slurry oil, catalytic crackingre heavy oil, catalytic crackingre extract oil and coking hydrowax, which contain 65-100 wt% of cyclane and arene, boilingpoint is 150 DEG C to 500 DEG C. The agglomerating inhibiting agent is used for preventing, slowing and removing agglomerating of apparatus and pipilines in process of petroleum refining and petrochemical processing.

A process to reduce the acidity of acidic crude oils for preventing corrosion during processing of the crude oils, including transferring through pipe lines, tanker ships and tank vehicles. Crude oil having substantial amount of organic acid, in particular, naphthenic acid compounds is contacted with supercritical water and a catalyst for deacidification. A treated crude oil product has lower amounts of organic acid compounds than the original crude oil.

The disclosure relates to new surfactants of bis-N-alkyl polyether, bis-N-alkenyl polyether, bis-N-cycloalkyl polyether, bis-N-aryl polyether bis-beta or alpha-imino acids or their salts, process for obtaining and using mainly as multifunctional corrosion inhibitors, which protect and prevent corrosion of ferrous metals exposed to acidic, basic and neutral when transporting or storing crude oil and liquid fuels, or to the equipment and pipes used in cooling systems industry petroleum and petrochemical industries. Gemini surfactants have the structural formula:where:R1 is a radical represented by —H or —CH3,R2 is an alkyl or alkenyl chain, or cycloalkyl or aryl;R3 is a radical represented by —H, —CH3, —CH═CH—CH3, or —COOX;R4 is a radical represented by —H, —CH3, or —CH2—COOX;R5 is a radical represented by —H, an alkyl or alkenyl, cycloalkyl or aryl group, or a metal;R6 is a radical represented by an alkyl, alkenyl, cycloalkyl or aryl group;n and m can have values from 1 to 250, depending on the molecular weight of polyether used; andi can have values of 0 and 1:In the radical —COOX used in R3 and R4, X is represented by:—H, an alkyl, alkenyl group, a cycloalkyl or aryl group, or a metal.

A method of inhibiting fouling and viscosity increase in hydrocarbon streams including ethylenically unsaturated monomers is disclosed. The method includes the step of adding to the hydrocarbon stream an effective amount of one or more quinone methides of the formula: wherein R1, R2, and R3 are independently selected from the group consisting of H, —OH, —SH, —NH2, alkyl, cycloalkyl, heterocyclo, and aryl.

A continuous process to upgrade heavy crude oil for producing more valuable crude feedstock having high API gravity, low asphaltene content, and high middle distillate yield, low sulfur content, low nitrogen content, and low metal co teat without external supply of hydrogen and / or catalyst. Heavy crude oil having substantial amount of asphaltene and heavy components is mixed with highly waxy crude oil having large amount of paraffinic components and water to decompose asphaltene compounds and remove sulfur, nitrogen, and metal containing substances under supercritical conditions. Product has higher API gravity, lower asphaltene content, high middle distillate yield, lower sulfur content, lower nitrogen content, and lower metal content to be suitable for conventional petroleum refining process.