37results about How to "Suitable for long cycle operation" patented technology

The invention relates to a high-carbon pulverized coal ash / coal slag decarbonization and classification method and device and provides a high-carbon pulverized coal ash / coal slag decarbonization and classification method. The method comprises the following steps of 1 mixing coal ash / coal slag with water, utilizing solid-liquid rotational flows to remove large particles in coal slag and obtain coal ash / coal slag subjected to pre-deslagging treatment; 2 adding a collector agent into the coal ash / coal slag subjected to pre-deslagging treatment, performing ore pulp pretreatment, performing even stirring, feeding the mixture into a flotation column for flotation, recovering floating carbon powder, and discharging out the coal ash / coal slag; 3 performing classified whirling on the coal ash / coal slag deposited in the flotation column, collecting first-grade pulverized coal ash, discharging out second-grade pulverized coal ash and third-grade pulverized coal ash; 4 performing dehydration treatment on the large particles obtained in the step 1, the carbon powder obtained in the step 2 and the pulverized coal ash obtained in the step 3 and recovering water for recycle. The invention further provides a high-carbon pulverized coal ash / coal slag decarbonization and classification device.

The invention relates to a method and a device for absorbing and whirling waste gas, providing a method for absorbing and whirling the waste gas. The method comprises the steps of: subjecting hydrophilic gas-containing waste gas and absorptive detergent to countercurrent contact for turbulent mixing of gas and liquid phases; subjecting mixed gas to fair current washing for removing hydrophilic gas; and subjecting waste gas including the absorptive detergent to whirling separation for removing the absorptive detergent included in the waste gas. The invention also provides the device for absorbing and whirling the waste gas.

The invention relates to a crude oil processing unit containing an electro-desalted sewage oil remover, and a method of the crude oil processing unit. The crude oil processing unit includes an electrical desalter and a primary tower, wherein the electrical desalter is provided with a crude oil inlet, an oil outlet and a water drain outlet; the primary tower is provided with an oil phase inlet; and the oil outlet of the electrical desalter is communicated with the oil phase inlet of the primary tower. The crude oil processing unit is characterized in that the electrical desalter is further connected with the primary tower through a centrifugal separation unit so as to separate water and oil in electro-desalted sewage; and the centrifugal separation unit includes an inlet, an oil phase outlet and a water phase outlet, wherein the inlet of the centrifugal separation unit is connected with the water drain outlet of the electrical desalter, and the oil phase outlet of the centrifugal separation unit is communicated with the oil phase inlet of the primary tower. The crude oil processing unit and the method thereof overcome the defects that the present electro-desalted sewage oil removing method and equipment are complicated to operate, have poor effects, good separation effect and high separation speed, are convenient to operate and suitable for long-period operation, realize on-site oil removal of the electro-desalted sewage and recycle of the dirty oil, and have high applicability and high impact resistance.

The invention relates to a method and device for recovering caprolactam in benzene distillation residue, and provides a method for recovering caprolactam in the benzene distillation residue. The method comprises the following steps: (a) respectively feeding the benzene distillation residue and water obtained by distilling in a benzene distillation column into a centrifugal extractor; (b) enabling the benzene distillation residue and water to fully mix and be subjected to mass transfer in the centrifugal extractor, in order to extract caprolactam in benzene distillation residue into the water; (c) performing liquid-liquid separation on the mixed solution of the benzene distillation residue and water through the centrifugal extractor in order to separate out an aqueous solution rich in caprolactam and the benzene distillation residue in which the caprolactam is removed; and (d) recycling the aqueous solution rich in caprolactam, separated out in step (c), and treating the benzene distillation residue in which the caprolactam is removed, by incineration. The invention also provides the device for recovering the caprolactam in the benzene distillation residue.

The invention provides a novel straight-run diesel oil deacidification method. The method comprises the step of carrying out extraction separation on diesel oil in an alkali washing and deacidification process by utilizing a centrifugal extraction separator so that the acidity of the diesel oil is less than 1.5mg / (100ml), and the mass fraction of oil in alkali slag is less than 2%. The invention also provides a straight-run diesel oil deacidification device. By the method and device provided by the invention, the separation efficiencies of alkali washing and water washing in the diesel oil deacidification process are improved, separation time is reduced, investment is small, and applicability is strong. The method and device provided by the invention are suitable for extraction separation occasions which have the requirements of small two-phase density difference, large viscosity, short separation time and the like in a petrochemical industry.

The invention relates to a method and a device for hydrocracking mineralized refuse cracked oil and provides the method for hydrocracking the mineralized refuse cracked oil. The method comprises the following steps: (a) breaking and pyrolyzing mineralized refuse to obtain arene and alkane precursor biomass oil; (b) hydrogenizing the arene and alkane precursor biomass oil obtained in the step (a) and separating an obtained hydrocrackate to obtain arene and alkane; and (c) purifying, recovering and optimizing the arene and the alkane obtained in the step (b), and deeply processing to produce naphtha, jet fuel, light diesel oil and heavy diesel oil. The invention further provides the device for hydrocracking the mineralized refuse cracked oil.

The invention relates to a method and device for removing salts in crude oil by using cyclone technology, which is characterized in that crude oil injected with water and demulsifier is separated into oil phase and For oily sewage, the oil phase is settled and separated by the settling tank, and enters the downstream device; the oily sewage is settled and separated into dirty oil and salty sewage by the settling tank, the dirty oil enters the dirty oil tank, and the salty sewage is discharged. One-stage, two-stage or multi-stage cyclone desalting devices can be determined according to the actual salt content of crude oil and the required separation effect. The device can reduce the salt content of crude oil to less than 3mg / L, and the water content in the oil can be reduced to 0.1% (volume ratio), which can replace the traditional thermochemical sedimentation dehydrator and electric dehydrator, and is suitable for popularization and use in the petrochemical industry .

The invention relates to a cyclone-filtering-membrane combined recycle hydrogen purifying method and a device, providing the cyclone-filtering- membrane combined recycle hydrogen purifying method. The method comprises the following steps: performing cyclone separation on recycle hydrogen raw material gas to remove drops in the recycle hydrogen; filtering the recycle hydrogen raw material gas subject to cyclone separation to further remove fine drops in the recycle hydrogen; and performing membrane separation on the filtered recycle hydrogen raw material gas to remove impure gases in the recycle hydrogen so as to obtain concentrated hydrogen. The invention also provides the cyclone-filtering-membrane combined recycle hydrogen purifying device.

The invention discloses a propane and propylene separation device, which comprises a first dryer, a second dryer and a third dryer. A first flow control valve is arranged at a downstream position of the first dryer, a second flow control valve is arranged at a downstream position of the second dryer, and a third flow control valve is arranged at a downstream position of the third dryer. Outlets ofthe first flow control valve and the second flow control valve are mixed prior to entering a membrane component, and an outlet of the third flow control valve is connected with the membrane component. A pressure gauge and a pressure regulating valve are arranged at a downstream position of an outlet of the membrane component, a fourth flow control valve is arranged at a downstream position of theother outlet of the membrane component, and the fourth flow control valve is connected with a soap bubble flow meter and a gas chromatograph. The propane and propylene separation device is simple inoperation, low in maintenance demand and suitable for long-period operation, and efficient separation of propane / propylene mixed gas can be realized under a condition of low energy consumption.

Provided are a method and a device for separating spent caustic soda from cyclohexane oxidation liquid by using swirl coalescence series combination technology. By combining the gravity settling tank, the cyclone separator and the coalescence separator to carry out the three-step separation of the spent caustic soda of the cyclohexane oxidation solution, the problem of incomplete separation of the spent caustic solution of the cyclohexane oxidation unit in the prior art can be effectively solved, The invention overcomes the disadvantages of the unsatisfactory effect of the existing gravity sedimentation method and the frequent flushing of the coalescence separation method, greatly prolongs the effective production time of the alkane distillation tower, thereby significantly reducing the production cost.

The invention discloses a method for reducing the sodium salt content in crude alcohol and ketone materials containing lye. The method uses a desalination device to desalt the crude alcohol and ketone materials containing lye; the desalination device includes a mixing tank connected by pipelines, a two-phase Separator and salt extraction tower, after the crude alcohol and ketone material containing lye is mixed in the mixing tank, it is pumped into the two-phase separator to separate the organic phase of alcohol and ketone from the water phase of lye; the water phase of lye is separated from the two-phase The bottom of the separator is discharged; the alcohol and ketone organic phase enters the lower part of the salt extraction tower from the top of the two-phase separator, and is countercurrently contacted with the process water entering the upper part of the salt extraction tower for water washing, and the obtained alcohol and ketone material is discharged from the top of the salt extraction tower, and the obtained The washing liquid is discharged from the bottom of the salt extraction tower. This method can reduce the sodium ion content in the lye-containing alcohol and ketone material below 10mg / kg, and save process water by 0.2-2m 3 / h, reduce the stagnation of water in the device, and reduce the energy consumption of the device.

The invention relates to the denitrification of refinery hydrogen streams, and provides a method and a device for denitrifying a refinery hydrogen stream. The method comprises the steps: not carrying out denitrifying treatment on the stream when the nitrogen content of the hydrogen stream is relatively low; feeding the nitrogen-containing hydrogen stream into the denitrifying device for denitrifying treatment when the nitrogen content of the hydrogen stream reaches a certain value, wherein the hydrogen stream requires to be fed to a compressor for pressurization after denitrification due to pressure drop caused during the denitrification. The nitrogen content is subjected to correlated measurement by using a monitoring device, and is used as a criterion for starting denitrifying operation. According to the method and the device, the hydrogen stream comprises a circulating hydrogen stream and a discharge stream of a hydrogen by-production device. The method can be used for optimizing equipment of the existing methods so as to increase the utilization ratio of byproduct hydrogen. The invention further provides the hydrogen stream denitrifying device.

The invention relates to a method and device for extracting hexahydrobenzoic acid from a rearrangement reaction liquid, and provides the method for extracting hexahydrobenzoic acid from the rearrangement reaction liquid. The method comprises the steps of: (a) conveying the rearrangement reaction liquid from a rearrangement reactor to a heavy phase inlet of a centrifugal extractor, conveying n-hexane to a light phase inlet of the centrifugal extractor, carrying out sufficient mixing and mass transfer on the rearrangement reaction liquid and n-hexane between a high-speed rotating inner drum and a stationary outer drum of the centrifugal extractor, thus extracting hexahydrobenzoic acid from the rearrangement reaction liquid to n-hexane; (b) carrying out liquid-liquid separation on the mixed liquid of the rearrangement reaction liquid and n-hexane with the centrifugal extractor to form a light phase rich in hexahydrobenzoic acid and a heavy phase with hexahydrobenzoic acid removed; and (c) conveying the obtained heavy phase to a hydrolysis reactor for hydrolyzing, then conveying to a sedimentation tank, and directly conveying the obtained light phase to the sedimentation tank. The invention also provides the device for extracting hexahydrobenzoic acid from the rearrangement reaction liquid.

The invention relates to an efficient separation recycling method for solid particles of terephthalic acid oxidized mother liquor. The method comprises the following steps of: (1) initially separating the terephthalic acid oxidized mother liquor by using a solid-liquid micro-cyclone separator to obtain solid particles with large diameter size; (2) filtering and separating the oxidized mother liquor that is initially separated by the solid-liquid micro-cyclone separator by using a corrosion-resisting efficient metal porous membrane tube; and (3) putting the filtered clear liquid into a distillation column to recycle a solvent, pulping the solid particles in a recycled material storage tank and then putting the pulped solid particles in a material distribution unit for utilization. According to the method disclosed by the invention, the solid and liquid separation efficiency is improved, the post treatment of the oxidized mother liquor in the production process of the terephthalic acid is reduced, efficient recycle of fine solid particles in the oxidized mother liquor can be realized, and the production cost is reduced.

The invention discloses a solid vortex centrifugal separation device and an oil spillingskim separating method thereof. The solid vortex centrifugal separation device comprises an outer support, a columnar rotary drum, an inlet pipeline, a pre-rotary guide vane, gratings, a central fixing shaft, a water phase overflow weir, an oil phase overflow weir, a water phase outlet pipe, an oil phase outlet pipe and a gas phase outlet pipe, wherein the inlet pipeline and the columnar rotary drum are coaxial, the pre-rotary guide vane is arranged at the tail end of the inlet pipeline, and the columnar rotary drum is divided into a plurality of mutually independent fan-shaped separation zones by the gratings. The columnar rotary drum is driven to rotate and produce a centrifugal force by adopting an electric motor so as to perform gradual water phase and oil phase separation, a separated oil phase flows into the oil phase outlet pipe through the oil phase overflow weir and is discharged into an oil storage cabin of an oil spilling chip. Water reaching the standard is directly discharged out through the water phase overflow weir and the water phase outlet pipe. Theseparation device is small in size, good in applicability, stable in operation and high in separation efficiency, can achieve efficient oil and water separation without any reagent and meets the requirements of oily water separating devices for oil spilling ships, and the separation efficiency can be up to 99%.