13 results about "Petrochemistry" patented technology

The utility model provides a biomass methanol sewage treatment device which comprises the following steps: S1, gasification wastewater, ground flushing water, methanol rectification wastewater, test wastewater and domestic sewage are generated in a biomass methanol production process; carrying out oil removal, two-stage air flotation reaction, deamination reaction, coagulation cyanogen breaking and Fenton pre-oxidation treatment on the gasified wastewater to obtain pretreated gasified wastewater; s2, performing comprehensive treatment on the ground flushing water, the methanol rectification wastewater, the test wastewater, the domestic sewage and the pretreated gasification wastewater. The biomass methanol wastewater treatment system has the beneficial effects that the high-concentration gasified wastewater is pretreated by adopting classified and quality-divided treatment, the pretreated wastewater is biodegradable wastewater, and a comprehensive treatment process which mainly adopts biochemical treatment and is high-grade oxidation security is adopted, so that the treatment cost of the biomass methanol wastewater is reduced, and the effluent is ensured to reach the emission standard of pollutants in the petrochemical industry.

The invention relates to the field of petrifaction and discloses a Mo-W heteronuclear bimetallic composite carrier catalyst as well as a preparation method and application thereof. The Mo-W heteronuclear bimetallic composite carrier catalyst comprises an Al2O3-SiO2 composite carrier with a three-dimensional ordered macroporous structure, and Mo-W heteronuclear bimetallic which is uniformly dispersed and loaded on the composite carrier in situ, wherein Mo and W are respectively combined with the surface of the composite carrier through Mo-O-Si and W-O-Al to form charge gradient polarization sites, the valence state of Mo is + 4 to + 6, and the valence state of W is + 4 to + 6. The catalyst provided by the invention has a good mass transfer effect, can give consideration to both acidic site density and metal dispersibility, and has high conversion rate, high selectivity and strong carbon deposition resistance when being applied to toluene disproportionation, aromatic hydrocarbon transalkylation, heavy aromatic hydrocarbon lightening and other reactions.

The present invention relates to an insert for a heat exchanger tube (10) for improving the heat transfer efficiency and / or reducing the fouling of the heat exchanger tubes of industrial units, for example units used in the fields of petroleum refining, petrochemistry or chemistry in general. The insert comprises a rotatably movable element in the form of a spring (1) having a pitch p1 that is smaller at the inlet of the tube (10) as compared with the rest of the movable element.

The method according to the invention comprises the following steps: (a) a stripping step in a stripping vessel (1); (b) a first liquid-liquid extraction step in the first extraction vessel (2), wherein an aprotic solvent is used as the extraction medium; and (c) a second liquid-liquid extraction step in a second extraction vessel (3), in which a protic solvent is used as the extraction medium, in which steps (a)-(c) can be applied in any order. The use of this process allows for the purification of the hydrocarbon composition to such an extent that the content of chlorine-containing compounds can be reduced to less than 1 ppm by weight. This low chlorine content is desirable for processing of hydrocarbon compositions in a number of different chemical processing operations, such as steam cracking operations. The presence of higher levels of chlorine-containing compounds may lead to equipment corrosion during these processes, which may lead to, for example, a reduction in time between equipment failure and / or equipment maintenance cycles. In view of the significant influence on the economical efficiency of the method, the existence of chlorine-containing compounds is obviously expected to be avoided to any extent.

The present invention relates to an insert (300) for a heat exchanger tube (100) for improving the heat transfer efficiency and / or reducing the fouling of the heat exchanger tubes of industrial units, for example units used in the fields of petroleum refining, petrochemistry or chemistry in general. The insert comprises a rotatably movable element having a rotary drive part (30) connected to a rigid helical winding of a metal rod comprising several turns (10). The drive part (30) comprises a shaft (3a) coaxial with the winding and provided with at least two blades (30b) secured to the shaft.

The invention relates to a method for decontaminating a petrochemical composition, comprising the steps of: (i) subjecting a hydrocarbon composition (A) comprising an inorganic and / or polar contaminant to a water washing treatment, preferably wherein the inorganic and / or polar contaminant is a chlorine-containing contaminant, to obtain a washed product (B); and (ii) subjecting the product (B) obtained from step (i) to a nitrogen gas bubbling treatment to obtain a product (C). Such methods allow for the purification of hydrocarbon compositions, such as pyrolysis oil products obtained from the processing of waste plastic compositions, such that such hydrocarbon compositions may be suitable for processing in petrochemical and / or refinery operations.

The invention relates to a method and a system for nuclear production of petrochemicals. Some such systems include a nuclear reactor that generates thermal energy; a dehydrogenation plant adapted to produce petrochemicals using some thermal energy; a power generation device adapted to generate electricity and produce steam using some thermal energy; an electric steam methane reforming furnace for producing hydrogen using the generated electric power; and a cracking reactor adapted to combust hydrogen. Some such processes include using thermal energy generated by nuclear energy in a dehydrogenation plant to add the thermal energy to a dehydrogenation process to produce petrochemicals; using heat energy generated by nuclear energy in a power generation device to generate electricity and produce steam; energizing an electric steam methane reforming (SMR)-based hydrogen plant with the generated power to produce hydrogen, and processing a hydrocarbon feed in a cracking reactor to produce petrochemicals.

The present invention relates to a low-friction fastening device for a rotationally movable insert for a heat exchanger tube. Such inserts are used to improve the heat transfer efficiency and / or reduce the fouling of the heat exchanger tubes of industrial units, for example units used in the fields of petroleum refining, petrochemistry or chemistry in general. The fastening device comprises a fastening support forming a bearing (130) for a journal (120), and at least one reduced-friction anti-wear part (150) having a longitudinal section with a shape adapted to reduce the friction with a head (14', 141) of the journal and / or an additional anti-wear part, the longitudinal section being circular, semi-circular, or frustoconical.

The present invention relates to biodegradable biofoams and methods of making biodegradable biofoams, such as the claimed biofoams. The foams provide a product comprising organic materials that can be naturally broken down in compost or soil, or can be used for bioenergy. The present invention eliminates or reduces any dependence on fossil fuels and provides a biofoam that is completely free of petrochemicals. The biofoam can be made almost entirely from plant-based and / or renewable materials. The biofoam can comprise green fillers, additives, and structural components to replace petrochemical compounds.

FIELD: petrochemistry.SUBSTANCE: invention can be used for lubricating oils to improve their tribotechnical properties when used in marine equipment. An anti-wear additive is proposed, comprising micelles based on molecules of a solid plastic lubricant of iron oxide Fe3O4 doped with cobalt Co (II), with surrounding molecules of oleic acid. The anti-wear additive additionally contains fullerene nanomodifiers in the form of polyhedral carbon clusters C60 and C70 and a powdered metal filler in the form of a copper nanopowder.EFFECT: improvement of tribotechnical characteristics of lubricating oils.1 cl, 1 dwg, 1 tbl

FIELD: gas combustion burners.SUBSTANCE: burners in which gaseous fuel is mixed with air before the combustion zone, used in the oil, chemical, petrochemical and other industries where high-temperature heating of hydrocarbon raw materials is required, or a high-temperature chemical reaction is carried out due to the heat released during the combustion of natural and oil refinery gases. A gas burner with incomplete preliminary mixing of gas and air, comprising a gas supply pipe connected by means of a flange joint to a gas chamber, a primary air mixing unit located inside the burner, having a space for the injection process and channels for supplying primary air, characterized in that the primary air mixing unit is a tightly fitting rim with rectangular openings located at an equal distance from each other outside the burner around the mixing unit, with a primary air supply regulator fixed on top of the rim, inside which, in a circle at an equal distance from each other, eight blades for mixing the primary air and gas are located, fixed on the inner rim; the blades are attached by means of a hook-and-eye connection to the surface of the adjustment rim and are connected to an adjustment mechanism consisting of an L-shaped plate located outside and fixed to a fixed support flange; a flame arrester is installed inside the burner, consisting of ribbed plates fixed on top of a hollow sleeve mounted on a flame gap regulator, which is a tube located in the center and passing inside through the entire surface of the burner, fixed on one side, and at the outlet of the burner connected to a disk distributor with an angle of inclination of 70°, on the outside of the burner there is a secondary air regulator, which is a metal rim located around the burner with protrusions for fixation, inside there are twenty-four blades located at an equal distance from each other, in the upper part of the secondary air regulator there is an opening for the passage of the gas supply pipe to the pilot burner through it, at the outlet of the gas supply pipe to the pilot burner there is a flame stabilizer installed.EFFECT: operational safety and improved gas-air mixing.4 cl, 7 dwg

The present invention relates to an insert for a tube (10) of a heat exchanger tube, in particular a two-phase heat exchanger, for improving the heat transfer efficiency and optionally reducing the fouling of the heat exchanger tubes of industrial units, for example units used in the fields of petroleum refining, petrochemistry or chemistry in general. The insert has an element which can be static or, preferably, rotatably movable and comprises several successive series of a first portion (S1) in the form of a spring and a second portion (S2) in the form of a straight rod.

The invention relates to the field of petrifaction, and discloses a preparation method and application of a heavy metal adsorbent. The preparation method comprises the following steps: 1) mixing a thiolated alumina microsphere dispersion liquid with AlOOH sol; mixing the obtained compound with urea and water, and performing heating reaction to obtain an aluminum oxide microsphere compound; 2) mixing the alumina microsphere compound, charcoal, Span-80, lauryl sodium sulfate and sodium bicarbonate in a sodium alginate solution, dripping the obtained mixed solution into a calcium chloride solution containing copper ions and zinc ions, reacting, and cross-linking through glutaraldehyde to obtain a calcium alginate coated composite material; and 3) mixing water, alum and ethanol, adding the calcium alginate coated composite material, fly ash coal, charcoal, clay and zeolite, and granulating to obtain the heavy metal adsorbent. Through compounding of the charcoal, fly ash, clay, zeolite, the calcium alginate coated composite material and the like, the prepared heavy metal adsorbent can efficiently remove various heavy metals in naphtha.