54results about "Refining with aqueous alkaline solutions" patented technology

The present disclosure relates to a method for processing of liquefied waste plastics (LWP). The method includes subjecting a liquefied waste plastic-based feedstock to heat treatment (HT processing) in an aqueous solution containing alkali metal hydroxide and / or alkaline earth metal hydroxide to form a heat treated effluent, transferring the heat treated effluent to a separator, subjecting the heat treated effluent to phase separation to isolate at least an oil phase including treated LWP and an aqueous phase including contaminated material, and recycling at least a part of the aqueous phase back to the HT processing.

The present invention relates to a process for refining pyrolysis oil and a unit for carrying out the process. The present invention further relates to refined pyrolysis oil that can be obtained or obtained by the process.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The utility model relates to the technical field of waste oil regeneration, and discloses a waste white oil alkali washing device which comprises a tank body, a heating assembly is installed on the periphery of the tank body, a sleeve, a servo motor and a feeding pipe are sequentially and fixedly connected to the top of the tank body from left to right, and a liquid discharging pipe is fixedly connected to the bottom of the tank body. A stirring assembly is installed in the tank body, a top ring is slidably connected to the middle of a sleeve, a filtering barrel is fixedly connected to the bottom of the top ring, a connecting pipe is fixedly connected to the top of the top ring, an elastic assembly is installed in the middle of the top ring, a clamping block is slidably connected to the middle of the top ring, and a clamping groove is formed in the middle of the sleeve; and the middle part of the sleeve is slidably connected with a push rod. According to the utility model, firstly, waste white oil is input through the connecting pipe, and larger impurities can be filtered under the action of the filtering barrel at the bottom of the connecting pipe, so that the mixing efficiency of the waste white oil and a sodium hydroxide aqueous solution is ensured, and the impurities are prevented from blocking the pipeline.

A treatment composition for being added to petroleum based liquids for reducing total sulfur content in the petroleum based liquids, comprising: sodium sulfide and at least one hydroxide compound. A dosage of the treatment composition may be added to liquids containing sulfur, including crude oil and distillates of crude oil and then allowed to react with such liquids over a period of time, e.g., hours or days. By such reaction total sulfur content of the liquids may be reduced by more than 50%.

The invention relates to a process for treating biomass oil comprising: (a) a step of supplying biomass oil selected from biomass pyrolysis oil, biomass hydrothermal liquefaction oil, lignin oil, and mixtures thereof; (b) a step of oxidizing the biomass oil supplied in step (a) in the presence of an oxidizing agent at a temperature of 90 °C or lower, this step producing an effluent containing at least partially oxidized biomass oil and water; (c) a step of distilling the effluent from step (b) under reduced pressure, separating a distillate containing water from a residue under vacuum to form a stabilized biomass oil with a reduced water content. Figure 1

Aqueous treatment compositions for crude oil and / or petroleum distillates to remove sulfur compounds therefrom and treatment methods using such compositions are disclosed. The composition has less than 0.5% wt / wt di- or tri-benzohydroxy compound, a strong base, less than 1% wt / wt divalent metal gluconate, a balance of water, and a pH that is 9 or greater. The treatment method includes adding said treatment composition to crude oil or a petroleum distillate to form a mixture having 0.001% to 0.02% wt di- or tri-benzohydroxy compound / wt oil and 0.001% to 0.03% wt divalent metal gluconate / wt oil and mixing the same together.

The present invention relates to the field of re-refining or regeneration of used lubricating compositions. More specifically, the present invention relates to a process for purifying lubricating oils, optionally at least partially re-refined by basic treatment under microwave irradiation, making it possible to obtain a lubricating oil having, in particular, a reduced silicon content, suitable for use as a base oil for the formulation of a new lubricating composition.

A problem arises when purifying a triglyceridic and / or free fatty acid feedstock for renewable hydrocarbon production, where such feedstock comprises C2-C6 aliphatic oxygenates, as they are transferred to the aqueous wastewater during the course of the purification, and which contributes to the degree of pollution of the aqueous wastewater measured as the chemical oxygen demand. The aqueous wastewater is extracted with the purified feedstock for renewable hydrocarbon production, which reduces the chemical oxygen demand of the aqueous wastewater by extracting the C2-C6 aliphatic oxygenates therefrom, while maintaining the purified feedstock for renewable hydrocarbon production in a quality that can be directly processed in a hydrotreating step, where the extracted C2-C6 aliphatic oxygenates are also converted to valuable hydrocarbons.

A novel process for making steam cracker feedstocks from contaminated pyrolysis oil, e.g., derived from waste plastics. The process utilizes an alkali hydroxide hydrolysis to clean the pyrolysis oil. The clean pyrolysis oil is then sent to an isocracking section to prepare high quality steam cracker feedstock. Some products can be sent to a steam cracker as feedstocks, while others can be recycled back into the system to improve feedstock yield. This recycling can also be done for better heat management.

Embodiments of the present disclosure relate to hydrocarbon purification, in particular waste plastic purification using alkali wash.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The utility model relates to a treatment device for extracting crude phenol from phenol-containing distillate oil and realizing zero discharge of wastewater, which comprises an alkali preparation tank, an extraction pipeline at the top of a crystallizer is connected with the alkali preparation tank, the alkali preparation tank is respectively connected with the upper part of an alkaline washing tower, the upper part of a regenerator and the upper part of an adsorption tower, and the lower part of the alkaline washing tower is connected with a phenol-containing distillate oil pipeline; the bottom of the alkaline tower is connected with the upper part of the stripping tower through a pipeline; the bottom of the stripping tower is connected with the decomposition tower through a pipeline; the decomposition tower is connected with the upper part of the extraction machine; an extraction pipeline at the top of the extraction machine is connected with the lower part of the regenerator; a bottom extraction pipeline of the regenerator is connected with the decomposition tower, a bottom extraction pipeline of the adsorption tower is connected with the upper part of the complexing tank, a regeneration outlet of the adsorption tower is connected with the decomposition tower, and the complexing tank is connected with the crystallizer. The device provided by the utility model can realize extraction of crude phenol from carbolic oil and zero discharge of wastewater, and thoroughly solves the environmental protection problem in the process of acid-base phenol extraction from coal tar.

The present invention relates to a process for purifying a pyrolysis oil comprising an extraction step prior to a thermal treatment step, a production unit for carrying out said process and a purified pyrolysis oil obtained or obtainable by said process.

Post-treatment process for crude biodiesel containing residual monoacylglycerol (MAG) and comprising contacting said crude biodiesel with a concentrated alkaline solution, double counter-current washing each followed by a phase separation and drying. The process is economical in chemicals and washing water.

Embodiments of the present disclosure are directed towards hydrocarbon purification and specifically waste plastic purification utilizing a caustic wash.

The utility model relates to a treatment device for extracting crude phenol from phenol-containing distillate oil and realizing zero discharge of wastewater, which comprises an alkali preparation tank, a top extraction pipeline of a crystallizer is connected with the alkali preparation tank, a dilute alkali outlet of the alkali preparation tank is connected with the upper part of an alkaline washing tower and the upper part of an adsorption tower, the lower part of the alkaline washing tower is connected with a phenol-containing distillate oil pipeline, and the bottom of the alkaline washing tower is connected with the upper part of a stripping tower through a pipeline; a sodium salt solution outlet of the decomposition tower is connected with the upper part of the extraction tower through a pipeline; the lower part of the extraction tower is connected with an extraction agent supply pipeline; a top extraction pipeline of the extraction tower is connected with the upper part of the regeneration tower; a bottom extraction pipeline of the extraction tower is connected with the top of the adsorption tower; a top extraction pipeline of the regeneration tower is connected with an extraction agent supply pipeline, a bottom extraction pipeline of the adsorption tower is connected with the upper part of the complexing tank, a regeneration outlet of the adsorption tower is connected with the decomposition tower, and the complexing tank is connected with the crystallizer. The device provided by the utility model can realize extraction of crude phenol from carbolic oil and zero discharge of wastewater, and thoroughly solves the environmental protection problem in the process of acid-base phenol extraction from coal tar.

The application belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil and gas field oil production and a preparation method thereof. The desulfurizer for oil and gas field oil production comprises the following raw materials: N-octadecyl-1,3-propanediamine, an ionic liquid-organic copper mixture, ammonium molybdate, sodium lysine, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate, and water as the balance. The desulfurizer for oil and gas field oil production uses water as a solvent, and N-octadecyl-1,3-propanediamine, the ionic liquid-organic copper mixture and ammonium molybdate in the raw materials as main desulfurization components to remove inorganic sulfur and organic sulfur, and sodium lysine, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added to enhance the stability and permeability of the system, so that the raw materials synergize to achieve efficient removal of inorganic sulfur and organic sulfur in oil and gas field oil production.

The utility model discloses an oil liquid waste treatment device which comprises a treatment barrel, a stirring sleeve is arranged in the treatment barrel, a plurality of stirring rods are fixedly connected to the surface of the stirring sleeve and are evenly distributed, a setting shell is fixedly connected to the top end of the treatment barrel, and the setting shell is fixedly connected to the top end of the treatment barrel. The upper end of the stirring sleeve penetrates through the treatment barrel and extends into the arrangement shell, a driving rod is movably connected to the inner side of the upper end of the stirring sleeve, a plurality of protrusions are arranged on the surface of the driving rod, and the protrusions are evenly distributed. According to the structure, the stirring sleeve, the driving rod and the limiting sleeve are arranged, so that the driving rod rotates to drive the stirring sleeve to rotate, and the reciprocating plate reciprocates up and down while the stirring sleeve rotates; and under the limiting effect of the limiting sleeve, the stirring sleeve is driven to drive the stirring rod to rotate and stir and move up and down at the same time, so that the stirring effect is better, and the treatment efficiency of the waste oil liquid is greatly improved.

To provide a technique capable of purifying a thermal decomposition product obtained from a waste plastic to a level capable of being supplied to an ethylene apparatus.SOLUTION: The apparatus 1 for purifying a pyrolysis product includes a deaerator 10 for deaerating waste plastic, a pyrolysis furnace 12 for pyrolyzing the deaerated waste plastic to produce a pyrolysis gas, a condenser 15 for condensing the pyrolysis gas to produce a light gas and an oil-water mixture, an oil-water separator 19 for separating the oil-water mixture into oil and water, a first impurity removing device 23 for removing impurities including at least acidic gas from the light gas to produce a pyrolysis purified gas, and a second impurity removing device 31 for removing impurities including at least organic chlorine from the oil to produce a pyrolysis purified oil.SELECTED DRAWING: Figure 1

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

A device for purifying a pyrolysis product (1) is provided with: a degassing device (10) for degassing waste plastic; a pyrolysis furnace (12) for generating a pyrolysis gas by pyrolyzing the degassed waste plastic; a condensation device (15) for condensing the pyrolysis gas to generate a light gas and an oil-water mixture; an oil-water separator (19) for separating the oil-water mixture into oil and water; a first impurity removal device (23) for generating pyrolysis purified gas by removing impurities including at least acidic gas from the light gas; and a second impurity removal device (31) for generating pyrolysis purified oil by removing impurities including at least organic chlorine from the oil.

The present invention relates to an improved method for treating liquefied waste plastic, comprising: providing a volume of oil based on liquefied waste plastic; heat treating the volume of LWP-based oil; phase-separating the resulting heat-treated mixture volume into a first aqueous phase volume and a first oil phase volume; separating out a first aqueous phase volume; adjusting the pH of the first aqueous phase volume to a pH 9.0 or less; and separating the pH-adjusted volume phase into at least a second aqueous phase volume and a second oil phase volume.

The present technology provides a method that includes contacting a composition with a caustic solution to produce a caustic-treated composition; combining the caustic-treated composition with silica particles to produce a slurry; and removing the silica particles from the slurry to produce a treated composition; wherein the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil and the composition includes: at least about 10 wppm of total metals, at least about 8 wppm of phosphorus, at least about 10 wppm of chlorine, at least about 10 wppm of sulfur, at least about 20 wppm of nitrogen, at least about 5 wt.% of free fatty acids; and has an acid number from about 10 mg KOH / g to about 150 mg KOH / g, and the silica particles has a particle size from about 10 microns to about 50 microns, a BET surface area from about 200 m2 / g to about 1000 m2 / g.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

Embodiments of the present disclosure relate to hydrocarbon purification, in particular plastic pyrolysis oil purification using alkali wash.