129 results about "Refinery" patented technology

Systems, assemblies, and methods to enhance extraction of pyrophoric materials from a refinery apparatus may include supplying a pressurized fluid to a plurality of vacuum generators, and generating, via the plurality of vacuum generators using the pressurized fluid, a vacuum flow. A manifold may provide a flow path for the vacuum flow, and pyrophoric material may be extracted from the refinery apparatus via the vacuum flow to a material collector through which the vacuum flow passes, depositing at least a portion of the extracted pyrophoric material in the material collector. One or more of inert gas or a cooling medium may be supplied to the material collector.

The invention belongs to the technical field of desulfurization gas purification, and particularly relates to a desulfurizing agent and a preparation method thereof. The desulfurizing agent is an iron-zinc-calcium composite oxide material with a hierarchical porous structure, and the preparation method of the desulfurizing agent comprises the following steps: performing amination modification on xanthan gum, then mixing the modified xanthan gum with nano cellulose, and then preparing slurry with a metal salt solution containing Fe, Zn and Ca; performing two-way temperature gradient freezing casting and freeze drying to obtain a precursor; and finally, roasting and activating under programmed temperature control. According to the preparation method, nano-scale dispersion of active components is realized by virtue of strong coordination of aminated xanthan gum and metal ions, and a high-strength and through hierarchical pore framework is constructed by virtue of nanocellulose enhancement and freezing casting. The obtained desulfurizer has ultrahigh one-time sulfur capacity, high mechanical strength and excellent structural stability, is complete in form after being used, is convenient for resource recovery, and is suitable for efficient removal of hydrogen sulfide in industrial gases such as refinery gas.

The invention discloses a refinery production scheduling optimization method and device. The method comprises the following steps: constructing a refinery production scheduling optimization model based on a refinery production scheduling expert rule and a pre-established refinery production scheduling mathematical model, wherein the production scheduling expert rule is formulated according to the actual production process of the refinery; inputting the actual production parameters of the refinery plant into the refinery plant production scheduling optimization model and solving to obtain a model solving result; and obtaining a refinery production scheduling business result based on a model solving result. According to the method, the production process of the refinery plant can be optimized and scheduled more reasonably and scientifically under the constraint of the production scheduling expert rule, the executability of the production scheduling of the refinery plant is improved, and the working efficiency of the production scheduling and scheduling of the refinery plant is improved.

The invention belongs to the technical field of petrochemical anticorrosion, and provides a multifunctional water-soluble corrosion inhibitor for an oil refining device and a preparation method of the multifunctional water-soluble corrosion inhibitor, and the corrosion inhibitor is a functionalized grafted copolymer obtained by a ring-opening reaction of a succinimide ring on a polysuccinimide intermediate and a plurality of amino-containing compounds; the amino-containing compound at least comprises gemini imidazoline quaternary ammonium salt with a corrosion inhibition function; a polyaspartic acid chain segment precursor with scale inhibition and dispersion functions; the organic amine compound has targeted chelating and pH buffering functions and contains sulfonic acid groups and carboxyl groups; according to the invention, double-anchored gemini imidazoline quaternary ammonium salt is taken as a corrosion inhibition core, and a polysuccinimide ring-opening grafting process is combined, so that chain segments with corrosion inhibition, scale inhibition, targeted buffering and temperature-sensitive self-repairing functions are covalently integrated into a same polymer main chain, and multi-functional efficient protection of a single agent in an oil refining device water phase system is realized.

Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3 olefin / paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

This invention pertains to the field of hydrogen energy, specifically a high-carbon, low-hydrogen pressure swing adsorption (PSA) purification process system and method. The system, along the gas flow direction, sequentially includes a carbon-based conversion unit, a heat exchange-cooling-gas-liquid separation unit, a compressor, at least two switchable decarbonization and desulfurization towers, a fine desulfurization tower, a PSA unit, a desorbed gas buffer tank, a desorbed gas compressor, and a fuel gas tank. This invention increases the hydrogen fraction in the feed gas from 30-50% to 50-70% through carbon-based conversion, then removes total sulfur to ≤0.1ppm through multi-stage desulfurization and decarbonization, finally producing fuel cell-grade hydrogen with a purity of ≥99.97% via PSA. Simultaneously, the desorbed gas is pressurized, buffered, and then divided into two stages for reuse. This invention effectively improves hydrogen recovery rate and desorbed gas utilization rate, solving the problems of high energy consumption and adsorbent poisoning in the purification of high-carbon, low-hydrogen by-product gases. It is applicable to various feed gases such as coke oven gas, refinery gas, and methanol tail gas.

The invention relates to the field of refining and chemical degradation-resistant wastewater treatment, in particular to a ceramic membrane with a surface-pore channel concerted catalysis structure, a preparation method and application. According to the method, aluminum oxide, a high-temperature-resistant catalyst (manganese dioxide / CuO) and calcium carbonate are mixed and prepared into a green body, then the green body is sintered to obtain a ceramic membrane matrix, and a gel-sol method is further adopted to prepare the efficient catalytic separation layer. According to the method, a surface and membrane pore confinement synergistic catalysis structure can be formed through induction in the sintering process of the ceramic membrane, the binding force between components of the ceramic membrane is strengthened, and the mechanical strength of the membrane is remarkably improved; meanwhile, by adopting a gel-sol method, regulating and controlling the thickness of the separation layer and preparing the separation layer, the surface separation layer is degraded and separated, free radicals in a reaction system can be enriched through the space confinement effect of matrix membrane holes, the concentration of active species in the membrane holes is improved, and then the oxidation removal efficiency on pollutants is enhanced.

Disclosed is a process of utilising ferruginous laterite (14) in bauxite mining. The process may include providing a laterite source and a bauxite source (16) from a bauxite mine (12), and separating the laterite source into a first laterite fraction (24) that is enriched with a non-magnetic bauxite-like material and a second laterite fraction (22) that is iron enriched laterite. The second laterite fraction (22) may be directed to an iron refinery (44). A bauxite mine (12), Bayer plant (26), and iron refinery (44) configured to implement the process are also disclosed.

The invention belongs to the technical field of oil sludge treatment, and particularly provides an oil sludge wastewater innocent treatment process which comprises thermal refining, solid-liquid separation, oil-water separation, PAM removal, wastewater treatment and solid-phase innocent treatment. The harmless treatment of the oily sludge wastewater has the advantages of simple process, mild conditions, environmental friendliness and the like, is suitable for oily sludge treatment scenes of oil fields, refineries and the like, and has remarkable industrial application value and environmental protection benefits.

Carbon capture for industrial applications, such as power plants, municipal solid waste facilities, cement production, iron & steel, petrochemicals, desalination and refineries, is disclosed herein. Embodiments employ a cryogenic system and process to capture carbon dioxide, ensuring efficient and effective capture, while also maximizing solvent recovery. This advancement enables a capability to meet the demands of diverse industries with a solution that reduces energy penalties and enhances overall operational efficiency. The approach is scalable, modular, and compact, while minimizing energy consumption.

When using spectroscopic diode lidar to detect a gas of interest such as methane (CH4), detecting high concentration pathlength (CPL) values of the gas of interest may not actually indicate a plume or leak. In areas such as a refinery, where ambient gas levels may be routinely high, absorption from ambient gas measured over a long pathlength may produce the same CPL value as a much closer gas leak, leading to a false positive. By collecting and using lidar distance information in tandem with the CPL values determined from the lidar system spectroscopic measurements, the statistical properties of the dataset can be evaluated, and ambient concentrations of the gas estimated. A lidar dataset with revised values of CPL that adjusts for these measurements of ambient concentration may be created to provide better reliability for analysis and in for triggering alarms for potentially dangerous gas concentrations and leaks.

The application discloses a kind of steel plate materials resistant to 700 DEG C, wet hydrogen sulfide environment, component includes by weight percentage: C:0.07-0.13%, Si:0.20-0.50%, Mn:0.30-0.60%, Cr:7.0-9.0%, Mo:1.00-1.20%, W:1.50-2.00%, Nb:0.06-0.10%, V:0.15-0.25%, N:0.040-0.100%.Its preparation method includes: smelting, casting, heating, rolling, heat treatment is normalized heat treatment after martensite is decomposed again, then stabilization treatment is carried out.The steel plate material prepared by the application has high-temperature tensile strength of 410-450 MPa at 700 DEG C, transverse elongation after fracture of 31.0-34.0%, and longitudinal elongation after fracture of 33.0-35.0%.

The present application belongs to the field of refinery dry gas utilization, and discloses a system and method for preparing propylene by disproportionation of refinery dry gas. The system comprises a raw material pretreatment unit, a disproportionation reaction unit and a product separation unit. The raw material pretreatment unit comprises, in sequence, an alkali washing package, a dry gas compressor, a dry gas absorption tower, a first desorption tower, a second desorption tower and a circulating carbon four cooler. The disproportionation reaction unit comprises a disproportionation reactor inlet-outlet heat exchanger, a disproportionation reactor and a reaction outlet cooler. The product separation unit comprises a deethanizer, a propylene rectification tower, a reaction separation tail gas absorption tower and a remaining carbon four cooler. The system and method can reduce the consumption of carbon four raw material, improve the recovery rate of ethylene in refinery dry gas and reduce consumption.

Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3-C4 olefin / paraffin mixture, and optionally naphtha, is recovered from the hydrocracking unit and passed to a steam cracker to make ethylene A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

The application provides a crude oil pipeline transportation differentiation control method considering the differences between the stoppable pipeline and the non-stoppable pipeline, and comprises the following steps: S1, collecting pipeline transportation end parameters, upstream end parameters and downstream end parameters, and performing pretreatment; S2, defining the constraints and rules of the top layer framework of differentiation control; S3, scene judgment and classification processing: based on the collected real-time parameters, judging whether the pipeline transportation network is currently in a regular scene or a sudden scene; S4, executing corresponding differentiation control strategies for the regular scene or the sudden scene. The application realizes the deep cooperation between pipeline transportation control and oil depots and refineries, completely solves the problems of "pressure holding" and "oil shortage for volume adjustment" caused by the disconnection between supply and demand in the prior art, and improves the supply-demand matching degree M of the whole link to more than 95%.

The invention discloses an oil refinery production optimization method and device, a medium and electronic equipment, and the method comprises the steps: carrying out the refinery region division and refinery type division in an interactive interface according to the equipment installation position of a refinery device; on the basis of the divided refinery plant areas, determining product prices corresponding to the refinery plant areas by using a pre-trained profit optimization model; the optimization model is established by taking profit data maximization of the oil refinery as a target; determining equipment configuration information of the refinery plant device and raw material distribution proportion information of each piece of equipment; selecting and inputting at least one type of raw materials from the database samples; and based on all selected and input target production parameter information, optimizing the profit of a single refinery plant device and the comprehensive profit of the oil refinery by using an optimization model. According to the method, the complex process of the refinery is simplified, the optimization model covering the properties and types of various raw materials is established, a reverse raw material screening function is provided for the refinery, and the raw material with the highest cost performance is selected.

Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery FCC unit. A liquid petroleum gas C3 olefin / paraffin mixture is recovered from the FCC unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene.

The application discloses a dry gas deep desulfurization process. The process comprises the following steps: (1) removing hydrogen sulfide from refinery dry gas through a first-stage amine liquid absorption tower; (2) removing organic sulfur from tail gas of the first-stage amine liquid absorption tower in a low-temperature absorption tower; (3) sequentially exchanging heat between the absorption tail gas and raw dry gas, and between the absorption tail gas and hydrolysis tail gas, and then heating the absorption tail gas, and then inputting the absorption tail gas into a hydrolysis reactor to convert carbonyl sulfur into hydrogen sulfide; and (4) inputting the hydrolysis tail gas into a second-stage amine liquid absorption tower, and countercurrently absorbing the hydrolysis tail gas with lean amine liquid in the tower to remove hydrogen sulfide in the dry gas. The application can purify and remove sulfides in the dry gas, reduce the content of organic sulfur and hydrogen sulfide in the gas, reduce the content of SO2 in flue gas discharged from a heating furnace of each subsequent device, and ensure safe, environmentally-friendly and efficient and stable operation of the heating furnace of the whole plant.

Catalyst beds in refinery reactors require periodic change out due to build-up of contamination and loss of activity. The instant invention mists a liquid chemical solvent in nitrogen carrier gas to solubilize oils and heavy hydrocarbons and to further desorb light hydrocarbons and remove hydrogen sulfide (H2S), to effect decontamination. This process can be advantageously combined with nitrogen cool-down processes in preparation for catalyst unloading.

This invention belongs to the field of oil refining and chemical engineering, and discloses a saturated light hydrocarbon recovery and purification system and method. The method includes: recovering mercaptan-containing product gas from refinery process feedstock treated with MDEA using an absorption-desorption method; optionally, the method further includes removing mercaptan from the mercaptan-containing product gas; the mercaptan-containing product gas is mercaptan-containing C2 enrichment gas and / or mercaptan-containing crude liquefied petroleum gas; the refinery process feedstock includes refinery rich gas feed and crude hydrocarbon feed. When recovering C2 as a feedstock for ethylene cracking, this invention can remove only hydrogen sulfide and carbon dioxide from the recovered product without removing mercaptan, thus meeting the purity and mercaptan content requirements of the recovered product, reducing repeated desulfurization and sulfur injection processes in the ethylene cracking process, and lowering investment and energy consumption.

There is provided a stable blend of a petroleum atmospheric tower bottoms (ATB) feedstock and 1-20% by weight of a plastic, based on the weight of the blend, where the plastic comprises polyethylene and / or polypropylene, and the plastic in the blend comprises finely dispersed microcrystalline particles having an average particle size of from 10 microns to less than 100 microns. A process for preparing a stable blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and / or polypropylene and heating the mixture above the melting point of the plastic, but less than 500 DEG F. The plastic melt and petroleum feedstock liquid blend is then cooled to a temperature below the melting point of the plastic using mixing.

This specification relates to the field of oil and gas exploration and development technology, and in particular to a method, apparatus, and equipment for optimizing crude oil production scheduling in a proportional manner. It includes: acquiring sample data of crude oil production scheduling ratios and constructing a production scheduling optimization equation based on a pre-set refinery production scheduling optimization plan; setting linear expansion points for nonlinear constraint terms in the production scheduling optimization equations and constructing a linearized residual equation; then obtaining the iterative values ​​corresponding to the linear expansion points; transforming and linearizing the nonlinear constraint terms in the production scheduling optimization equations to obtain a production scheduling optimization linear equation and constructing a linear programming model; based on the iterative values ​​corresponding to the linear expansion points and the sample data, iteratively training and solving the linear programming model to obtain the target production output; updating the iterative values ​​of the linear expansion points; and iteratively training the linear programming model using a backpropagation algorithm to obtain the production scheduling optimization method. This can improve the efficiency and accuracy of solving the crude oil production scheduling optimization method in a proportional manner.

The application discloses a refinery gas composition determination method and related device, and relates to the field of gas analysis. The absolute correction factor of nitrogen and the relative correction factor corresponding to each stable gas are determined, and the absolute correction factor of the stable gas with relatively stable content in air is determined. Similarly, the absolute correction factor of each alkane is determined according to the absolute correction factor of methane and the relative correction factor of each alkane relative to methane, and the absolute correction factor of hydrogen is determined according to the content of hydrogen in the production sample containing hydrogen and the chromatographic peak area of hydrogen, wherein the chromatographic peak area of hydrogen is obtained by processing the production sample by a thermal conductivity detector. The determination of the absolute correction factor of each gas component is realized, and on the basis, the concentration of each component in the sample can be determined by combining the detection of the chromatographic peak area of each component of the refinery gas sample, thereby providing a reliable reference for subsequent resource utilization.

The invention discloses an oil refining model generation method and a visual display method and device. The method comprises the following steps: creating a single device model for each device based on a molecular database and a chemical reaction rule base in the oil refining field; according to the cutting condition output by the single device model, constructing a logistics connection model with a downstream single device model; according to the whole-process technological processes of the historical production schemes in different time periods, the logistics connection model is connected with a downstream single device model, and a whole-process model of each historical production scheme is constructed; and according to historical raw material information, performing simulation calculation on the whole-process model of each historical production scheme to obtain and store a result log, and based on this, providing a whole-process display function of the historical production scheme for a user through a visual UI, so that the user can visually understand the process of different production schemes in different time periods of refinery equipment, and the user experience is improved. Historical process data can be conveniently traced, and production schemes and process changes can be tracked.

The invention discloses a molecular oil refining simulation method and an internet-of-things steady-state data extraction method and device for molecular oil refining simulation. The simulation method comprises the following steps: preprocessing original internet-of-things data; carrying out production scheme identification on the basis of the preprocessed Internet of Things data so as to identify steady-state data in a plurality of production schemes; performing simulation parameter data extraction of each device on the steady state data in the plurality of production schemes; and simulating the multi-scheme molecular oil refining model based on the extracted simulation parameter data of each device so as to optimize the multi-scheme molecular oil refining model. According to the method, the steady-state internet-of-things data is accurately obtained, so that the modeling efficiency and the accuracy of the molecular oil refining model are improved, and comprehensive simulation of a refinery process is realized.

This invention discloses a liquefied petroleum gas (LPG) hydrotreating process for olefin removal and desulfurization. The feedstock consists of one or more types of LPG derived from refinery catalytic cracking, coking, or other units, as well as light hydrocarbons derived from oil and gas fields. After removing hydrogen sulfide from the LPG in a desulfurization tower, the feedstock is pressurized by a feed pump, mixed with hydrogen, and then heated and vaporized in a heat exchanger and furnace. It then enters a hydrorefining reactor for olefin saturation, removal of mercaptans and other impurities, and then enters a desulfurization reactor to remove hydrogen sulfide generated during the hydrotreating reaction. The refined desulfurized LPG is then cooled by heat exchange and enters a low-pressure separator. The refined LPG after gas-liquid separation is sent to a LPG separation unit. This process yields refined LPG products with low olefin and low sulfur content.

The present disclosure relates to a modified bitumen composition comprising: (a) at least two refinery residues; and (b) a sulphur additive comprising: (i) sulphur; (ii) at least one H2S suppressant; (iii) at least one smell masking agent; and (iv) bitumen, wherein the sulphur and the at least one H2S suppressant is in the weight ratio range of 4:1 to 100:1. The present disclosure also discloses a process of preparing a modified bitumen composition and a process of preparing an asphalt pavement comprising a modified bitumen composition. Also provided herein use of a modified bitumen composition as an additive for waterproofing and road construction.

The application discloses a kind of prospective crude oil alternative scheme planning methods, according to the property value of supply interruption crude oil, several alternative crude oils are screened, then the property value of alternative crude oil and purchase price are input into mixed crude oil proportioning calculation model to calculate, so that a plurality of mixed crude oil proportions are obtained, and a group of crude oil mixing schemes are obtained.In addition, in order to combine the crude oil mixing scheme calculated by the mixed crude oil proportioning calculation model with the actual refinery production work, a linear digital simulation model is established according to the actual refinery device, the yield and related property values of the products extracted from the side line of the crude oil mixing scheme output by the mixed crude oil proportioning calculation model are calculated under the actual production state, the best crude oil mixing scheme is selected according to the yield and related property values of the products extracted from the side line of the crude oil mixing scheme and the price of the mixed crude oil, and then the alternative crude oil is purchased according to the best crude oil mixing scheme.

The invention relates to a system and a method for estimating the carbon emission of a full-life-cycle petrochemical product based on adaptive parameter optimization. The system comprises a data acquisition module, a database module, a carbon emission calculation model module, a parameter adaptive adjustment module and a visualization module. The data acquisition module acquires raw material energy consumption, process parameters, energy consumption data and waste treatment mode data, and the data in the data acquisition module is allowed to be customized by a user according to actual working conditions. The database module stores crude oil types, carbon emission factors, basic energy and material information. The carbon emission calculation model is used for calculating the carbon emission of the petrochemical product in each stage of the full life cycle, and each stage of the full life cycle comprises crude oil exploitation, crude oil transportation, refinery processing, oil product transportation and oil product consumption stages. And system parameters are updated and optimized in real time through the parameter self-adaptive adjustment module. Compared with the prior art, the method has the advantages of wide application range, high real-time performance, high accuracy and the like.

The invention relates to the technical field of railway transportation oil loading and unloading automation, and provides a railway tank car intelligent checking system and method.The method comprises the steps that after incoming oil related data is obtained, in-place state information of a tank car is obtained through recognition equipment, and a car number image of the tank car is collected according to image recognition equipment and converted into character information; comparing the character information with the car number information of the tank car of the corresponding batch in a refinery incoming oil information if the comparison is passed, starting metering data acquisition, and obtaining the metering data of the oil product in the tank car through a portable measuring instrument; performing comparative analysis on the acquired metering data, the theoretical data of the refinery incoming oil information base and the historical data of the railway tank car metering database by using a preset intelligent algorithm: if the comparison is passed, performing verification according to the car number, the in-place state and the metering data, and generating an automatic oil unloading instruction after the verification is passed; and the railway oil unloading automatic control system receives the automatic oil unloading instruction, and intelligent checking of the railway tank car is completed.