30 results about "Petroleum chemistry" patented technology

The invention discloses a three-phase self-foaming water-plugging agent, and belongs to the field of petroleum chemistry. The provided water-plugging agent comprises the following components: solid particles, a foaming agent, a foam stabilizing agent, a crosslinking agent, a delaying agent, and a gas producing agent. Compared with the prior art, the provided water-plugging agent has the advantages of high foam quality and good stability, the gel crosslinking and gas production can be achieved at the same time, the water-plugging agent can tolerate high temperature, has a strong residue blocking performance and a long water-plugging period, and can achieve efficient plugging and depth profile control. Moreover, the preparation technology of the provided water-plugging agent is simple, the injection cost is low, and the water-plugging agent is safe and reliable, thus has a good market prospect and high economic value, and is especially suitable for the development of high temperature heavy oil steam stimulation wells.

The invention provides a new method for preparing a friction-resistant material by taking lignin as a modifying raw material. The new method is used for preparing the friction-resistant material by taking the solvent type lignin as the modifying raw material. The method can utilize the renewable lignin and has the advantages of strong chemical activity, high purity and the like, the solvent type lignin is taken for replacing phenols for preparing lignin-modified phenolic resin, and the resin has more polar groups in comparison with the traditional phenolic resin and stronger affinity in comparison with other components for preparing the friction-resistant material, thereby not only improving the performances of the friction-resistant material, but also fully utilizing the renewable resource and reducing the consumption of petroleum chemicals; simultaneously, the method can reduce the cost of preparing the friction-resistant material, save energy, reduce emission and produce great social benefits; furthermore, the process for preparing the friction-resistant material is simple and easy to implement and can produce good effects.

The invention provides an asymmetric metal filter core and a preparation method thereof. The asymmetric metal filter core is prepared by carrying out composite sintering on powder and comprises a tubular skeleton layer and an operational layer. The operational layer is covered above an external surface of the skeleton layer; the metal filter core has a dimension of d*l* delta equal to phi (30-100)*(100-2000)*(1.7-5.5)mm, wherein d*l* delta respectively represent an external diameter, a length and a wall thickness of the metal filter core; the skeleton layer of the metal filter core has an average aperture of 5-35 mum; the asymmetric metal filter core has an aperture of 0.1-10 mum and an amount of porosity of 25-60%; and the aperture of the skeleton layer is 5-25 mum larger than that of the operational layer. Compared with a homogeneous filter core with a same aperture, the asymmetric powder composite filter core has advantages of high permeability, good regeneration performance and long service life, etc., applies to gas-solid separation and liquid-solid separation and has good application prospects in the fields of gas purification, petroleum chemistry and energy and environmental protection, etc.

The invention relates to a catalyst carrier used for generating gas pulse in a reactor. The outer shape of the catalyst carrier is in a circular cake shape (flying saucer shape). The catalyst carrier is composed of a plurality of unit holes. The structure of each unit hole is that two ends of unit hole are prismoids and the middle portion of the unit hole is a hollow neck (weir groove), wherein the prismoids are preferably triple prismoids, quadruple prismoids or pentagonal prismoids, hexagonal prismoids, regular circular truncated cones, etc. The catalyst carrier is made of chemical ceramic materials. The chemical ceramic materials comprise the following raw materials of, by weight, gibbsite, 25-35 parts of kaolin, 10-20 parts of Guizhou soil, 5-10 parts of talcum, 8-12 parts of feldspar and 8-12 parts of alkali metal oxide. The catalyst carrier is suitable for being used as a carrier for the catalyst of the field of petroleum chemistry or as filling materials in the reactor. The carrier with the structure enhances a mass transfer effect and a heat transfer effect between gas and liquid, and further increases catalytic effect of the catalyst and reaction rate. The catalyst carrier has high hardness, high strength, large specific surface area, good high temperature resistance and good acid and alkali resistance.

The invention provides a treatment system for organic matters in petrochemical sewage reverse osmosis concentrated water and a treatment method thereof. The system comprises a softening tank, a flocculating tank, a settling pond, a pH regulation tank and a multi-element catalytic oxidation device which are sequentially communicated, wherein the settling pond is communicated with the softening tank through a sludge return pump, and a softening tank stirrer and a flocculating tank stirrer are respectively arranged in the softening tank and the flocculating tank. The method comprises the following steps: sequentially softening, flocculating and settling the petrochemical sewage reverse osmosis concentrated water; inputting the water into the pH regulation tank, and regulating the pH value to 4-5; inputting the water into the multi-element catalytic oxidation device through a multi-element catalytic oxidation water inlet pump, and performing multi-element catalytic oxidation treatment; and discharging the water after reaching the standard. The actual treatment effect proves that when the petrochemical sewage reverse osmosis concentrated water is treated by the multi-element catalytic oxidation device, the COD (chemical oxygen demand) in the reverse osmosis concentrated water can be reduced from 76-116mg / L to 31-42 mg / L, and the requirements of Emission Standard of Pollutants for Petroleum Chemistry Industry (GB 31571-2015) are met.

The invention discloses a synthesis method of an alkyl block polyether quaternary ammonium salt surfactant, and mainly belongs to the field of petroleum chemistry. The synthesis method comprises the following steps of: making alkyl block polyether react with alkali to obtain alkyl block polyether sodium salt or alkyl block polyether potassium salt; adding 1, 2-dichloroethane, and reacting for 4-5 hours to obtain chloroethyl alkyl block polyether; and recovering the unreacted 1, 2-dichloroethane, adding tertiary amine of which the molar weight is 1-1.2 times of the molar weight of the alkyl block polyether, adding a NaOH aqueous solution when the conversion rate of the tertiary amine reaches 70-75%, raising the reaction temperature to 100 DEG C, and continuously reacting for 6-7 hours. The product obtained by the method of the invention has the advantages of strong compounding capacity, good emulsifying property, temperature resistance, salt resistance and corrosion resistance.

The invention discloses a heat treatment method for ultra-low temperature high-strength steel used in compressors. On the basis of the existing heat treatment process of 25Cr2Ni3Mo steel, that is, normalizing, quenching and tempering, the normalizing temperature, quenching temperature and times, cooling medium, tempering Fire times and cooling medium, improve, and increase quenching times, tempering times and cryogenic treatment, make the material tensile strength of the 25Cr2Ni3Mo steel after the treatment of the present invention, yield strength can improve 5%, plasticity improves 10%, low temperature The impact toughness can be increased by more than 30%, which can meet the requirements of the standard API 617 petroleum, chemical and gas industry centrifugal compressors for the strength, plasticity, especially impact toughness of ultra-low temperature high-strength steel.

The invention discloses a waste heat electricity-water coproduction system. The water heat electricity-water coproduction system comprises a low-temperature Rankine cycle power generation system and a steam exhaust seawater desalting system. An energy staircase-type utilization system for generating the electric power by utilizing the primary waste heat and desalting the seawater by utilizing the secondary waste heat can be realized by utilizing a great amount of exhaust steam and smoke discharged from enterprises such as iron and steel, cement and petroleum chemistry. The waste heat electricity-water coproduction system is characterized in that the low-temperature seawater desalting technology for establishing a vacuum environment by utilizing the water column height and sucking the seawater by utilizing the capillary force is combined with the low-temperature Rankine cycle power generation. In the seawater desalting system, the discharge of the concentrated salty water utilizes a siphon effect, and the seawater replenishment utilizes the capillary suction force, so that no additional pump power input is needed for operating the desalting system. According to the technical scheme, a seawater desalting evaporator is used for substituting the traditional Rankine circulating condenser, so that the Rankine circulation low-temperature exhaust steam is further recycled, not only is the electricity-water coproduction realized, but also the problem of the low heat efficiency in a waste heat power generation system can be solved, and energy conservation and emission reduction can be realized.

The invention discloses a three-phase self-foaming water-plugging agent, and belongs to the field of petroleum chemistry. The provided water-plugging agent comprises the following components: solid particles, a foaming agent, a foam stabilizing agent, a crosslinking agent, a delaying agent, and a gas producing agent. Compared with the prior art, the provided water-plugging agent has the advantages of high foam quality and good stability, the gel crosslinking and gas production can be achieved at the same time, the water-plugging agent can tolerate high temperature, has a strong residue blocking performance and a long water-plugging period, and can achieve efficient plugging and depth profile control. Moreover, the preparation technology of the provided water-plugging agent is simple, the injection cost is low, and the water-plugging agent is safe and reliable, thus has a good market prospect and high economic value, and is especially suitable for the development of high temperature heavy oil steam stimulation wells.

The invention provides a method for recycling impurity salts generated in industrial wastewater treatment. The method comprises the following steps: (1) calcining impurity salts generated in an industrial wastewater treatment process, cooling, dissolving in pure water, and obtaining a high-concentration sodium chloride solution; (2) performing solid-liquid separation, and removing residual organisms in the solution; (3) successively removing sulfate radicals and calcium ions, adjusting the pH of the solution to neutral, and obtaining a high-purity sodium chloride solution; and (4) crystallizing the high-purity sodium chloride solution obtained in step (3), obtaining a sodium chloride crystal product, and washing to obtain the high-purity sodium chloride crystal product. By adopting the method, the effective treatment and recycling of impurity salts generated in the industrial wastewater zero emission process of electric power, petroleum chemistry, coal chemistry and the like; moreover, the method is simple in treatment process and moderate in operation conditions, and is a high-efficiency and stable impurity salt recycling method; and a final product sodium chloride is high in recycling rate and purity.

This invention discloses a tetrafluoro complex sealed shim and its facture. In the shim is the tooth-rushing steel disk upward and downward alternatively. The colophony around is suppressed and sintered under the high temperature from 370 deg. C to 430 deg. C. This invention is suitable for all kinds of pressure container and pipe flange airproof, especially the industries such as the FI chemistry, medical chemistry, biological pharmacy, and petroleum chemistry under the mid-pressure 2.0MPa~10.0MPa, the temperature of minus 196 deg. C~250 deg. C, and has good effect of airproof.

Devices and methods for preparing oxygen-containing liquid fuel by bio-oil catalytic conversion. A device includes a biomass fast thermal cracking system for preparing bio-oil, a bio-oil oil-water separating system for separating the bio-oil into oil phase bio-oil and water phase bio-oil that is output to an oil phase bio-oil chemical chain hydrogen production system, and a water phase bio-oil catalytic hydrogenation system. The hydrogen production system outputs produced hydrogen to the water phase bio-oil catalytic hydrogenation system to prepare a liquid fuel. A method includes the steps: thermally cracking the biomass to prepare bio-oil, separating the water phase and the oil phase, producing hydrogen from the oil phase bio-oil through a chemical chain method so as to provide a hydrogen source for the water phase bio-oil to carry out two-stage catalytic hydrogenation in a slurry bed, and separating and purifying the hydrogenated products to obtain an oxygen-containing liquid fuel.

The invention belongs to the field of petroleum chemistry, and relates to a two-stage reaction process of hydro-aromatization of C4 liquefied gas in a fixed bed reactor. The reaction process is mainly formed by a butene low-temperature aromatization reactor and an iso-butane selective aromatization reactor, so that the C4 liquefied gas can be processed into gasoline fraction with high octane value and a steam cracking material. The operation flexibility can be improved due to two-stage reactors, the quality of the gasoline product with high octane value and the steam cracking material can be guaranteed, and dry gas, coke and other side products can be reduced; the two reactors are under a hydrogenating condition, so that the one-way operation cycle and total service life of the catalyst can be prolonged.

A process for cracking an olefin-rich hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising contacting a hydrocarbon feedstock containing olefins having a first composition of one or more olefinic components with a crystalline silicate catalyst to produce an effluent having a second composition of one or more olefinic components, the feedstock and the effluent having substantially the same olefin content by weight therein as the feedstock.

A method and apparatus for generating electrical energy from combustion of biomass is provided. The present invention provides both liquid-phase and gas-phase fuel to an internal combustion engine that is designed to run on both types of fuel. Scrubbing syngas generated in an updraft gasifier with a first petrochemical-based liquid fuel reduces the concentration of tars in the syngas stream and also enables absorption of tars from the syngas into the first liquid fuel. After absorption, the tars form a second liquid fuel that is suitable for direct use in the internal combustion engine. As a result, the syngas provided to the engine is substantially free of tars and the volume of liquid fuel available to the engine is increased.

The invention relates to a preparation process of an unsaturated aldehyde in the field of petroleum chemistry, and in particular relates to a preparation method of the unsaturated aldehyde by aldehyde condensation. The method comprises the following steps: performing chromatographic separation after a reaction mixed substance leaves a reaction region; separating the water phase containing a catalyst from an organic phase; and distilling and separating the organic phase in a distillation region so as to reduce the possibility that the mixed substance circularly undergoes a side reaction, namely cannizzaro reaction, in the process and lighten the load of the distillation region. According to the preparation method of the unsaturated aldehyde by aldehyde condensation, the water phase containing the catalyst is separated from the organic phase, so that the possibility that the mixed substance circularly undergoes the side reaction, namely cannizzaro reaction, is reduced, the reaction mixed substance is subjected to chromatographic separation before entering the distillation region, and only the organic phase is fed into the distillation region for distillation and separation, so that the load of the distillation region is lightened.

The invention relates to a catalyst carrier used for generating gas pulse in a reactor. The outer shape of the catalyst carrier is in a circular cake shape (flying saucer shape). The catalyst carrier is composed of a plurality of unit holes. The structure of each unit hole is that two ends of unit hole are prismoids and the middle portion of the unit hole is a hollow neck (weir groove), wherein the prismoids are preferably triple prismoids, quadruple prismoids or pentagonal prismoids, hexagonal prismoids, regular circular truncated cones, etc. The catalyst carrier is made of chemical ceramic materials. The chemical ceramic materials comprise the following raw materials of, by weight, gibbsite, 25-35 parts of kaolin, 10-20 parts of Guizhou soil, 5-10 parts of talcum, 8-12 parts of feldspar and 8-12 parts of alkali metal oxide. The catalyst carrier is suitable for being used as a carrier for the catalyst of the field of petroleum chemistry or as filling materials in the reactor. The carrier with the structure enhances a mass transfer effect and a heat transfer effect between gas and liquid, and further increases catalytic effect of the catalyst and reaction rate. The catalyst carrier has high hardness, high strength, large specific surface area, good high temperature resistance and good acid and alkali resistance.