46results about How to "Reduce competitive adsorption" patented technology

The invention provides a method for deep removal of solid particles in oil slurry by heat treatment centrifugal sedimentation-electrostatic method, which mainly includes the following two steps: (1) directly pumping the oil slurry thrown out of the catalytic cracking unit into a centrifugal settling tank for heat treatment Centrifugal sedimentation; (2) Pump the 60-99% oil slurry in the upper layer after heat treatment and centrifugal sedimentation directly into the electrostatic tower for electrostatic desolidification. The invention preliminarily improves the properties of the oil slurry before electrostatic treatment, can effectively improve the electrostatic desolidification efficiency, and thereby achieves the purpose of deep desolidification of the oil slurry. The solid content of the treated oil slurry can be reduced to 100μg·g ‑1 Within, to meet the solid content requirements of raw materials for high value-added products.

The invention provides a preparation method of a hydrogenation catalyst. According to the method, a part of active metal components and an organic complexing agent are introduced in a carrier moldingprocess, a carrier is molded through a certain calcining treatment procedure, and then a subsequent active metal soaking step is performed to obtain the hydrogenation catalyst. According to the hydrogenation catalyst prepared with the method provided by the invention, active metals are dispersed uniformly; the preparation method is simple and feasible, and is particularly suitable for an ultra-deep hydrodesulfurization reaction of diesel oil.

The invention discloses a method for manufacturing a Ag2Se quantum dot-dye co-sensitization solar energy cell. According to the method, mercaptopropionic acid is taken as a surface stabilizing agent, polyvinylpyrrolidone or triammonium citrate is taken as a dispersant, a silver source and a selenium source are utilized to synthesize Ag2Se quantum dot in aqueous phase through a co-deposition method, and the synthesized Ag2Se quantum dot is dispersed in absolute ethyl alcohol to acquire a Ag2Se quantum dot absolute ethyl alcohol solution; a photo anode is sequentially dipped into the Ag2Se quantum dot absolute ethyl alcohol solution and a dye solution for sensitization to acquire a quantum dot-dye co-sensitization photo anode; an electrolyte layer and a counter electrode are prepared on the quantum dot-dye co-sensitization photo anode, and the Ag2Se quantum dot-dye co-sensitization solar energy cell is acquired. The method is advantaged in that the Ag2Se quantum dot is introduced into a dye sensitization cell, wider absorption spectrum is realized, through application to photoelectric devices, the photoelectric devices are made to keep relatively high photoelectric performance and photoelectric conversion efficiency.

The invention belongs to the technical field of medicines, and relates to the new technology for extracting Chinese magnoliavine fruit lignanoid. A preparation process comprises the following steps of: crushing Chinese magnoliavine fruit, adding 60 to 100 percent of methanol or ethanol and 0.5 to 5 percent of surfactant, performing reflux extracting for 1 to 2 times, and mixing extract, wherein the reflux extracting is performed for 1 to 2 hours every time; concentrating the extract under reduced pressure, removing the methanol or the ethanol, adding ester organic solvent for extracting; and concentrating an extract phase to recover the ester organic solvent, dissolving in proper amount of water, and purifying by adopting adsorbent resin, and eluting by 30 to 90 percent of ethanol to obtain the Chinese magnoliavine fruit lignanoid with 70 to 98 percent of lignanoid. The new technology has the characteristics that: after the surfactant is added, the extraction efficiency can be improved by over 30 percent, the extracting time can be reduced, clarified solution can be obtained, and an upper absorption column is not blocked due to ester insoluble substances; and by adding the ester organic solvent, pigment impurities can be removed effectively, the competitive adsorption of pigment on the absorption column can be reduced, and the purity of final products can be improved.

The invention provides an indoor VOCs purification material for a high humidity environment and a preparation method thereof. The preparation method comprises: preparing high porosity and adsorption effect phenolic aerogel, preparing a silver-doped nano-titanium dioxide photocatalyst, and producing hydrophobic ring crosslinked polyphosphazene microspheres through a polymerization reaction of hexachlorocyclotriphosphazene and bisphenol AF, wherein during the microsphere formation, the photocatalyst is uniformly dispersed on the surface of the aerogel to obtain the indoor VOCs purification material for a high humidity environment. Compared with the conventional purification material, the indoor VOCs purification material can reduce the competitive adsorption of water molecules and VOCs by supporting the photocatalyst on the superhydrophobic surface, and can improve the adsorption amount and adsorption rate of VOCs, can improve photocatalytic degradation efficiency of VOCs and is especially suitable for the adsorption and degradation of indoor VOCs in a high humidity environment.

The invention belongs to the technical field of uranium conversion, and particularly relates to a processing method of tail gas leacheate produced by UF6. The processing method includes steps of selecting waste water generated from tail gas spraying process of the UF6 technique as a processing object; preparing 15-20% of sodium hydroxide solution by mass for neutralizing bicarbonate radical ion in the technical waste water, and making it transform to be carbanion, and reducing the competitive absorption of HCO3- to the metal uranium; adding the prepared sodium hydroxide solution in the technical waste water tank, and stirring the solution evenly by pressure air; pumping the prepared alkali uranium-bearing liquid waste to the filter by a centrifugal pump driven by magnetic force to filter and remove suspended particle impurities; pressing the waste liquid to an ion exchange pillar by compression air to absorb; filling strong basicity anion exchange resin to the ion exchange pillar; after the absorption and saturation of the ion exchange resin, using the mixed solution of 2 mol / L sodium chloride and 5% of sodium carbonate as desorption agent to desorb the ion exchange resin; settling the desorption liquid by solid sodium hydroxide, and recycling the metal uranium therein.

The invention provides a preparation method of a hydrogenation catalyst. According to the method, part of an active metal component and an organic acid complexing agent are introduced in a supporter forming process, a supporter is formed by a certain baking process, and then a subsequent active metal impregnation step is performed to obtain the hydrogenation catalyst. The hydrogenation catalyst provided by the invention has active metal uniformly dispersed, is simple and easy to prepare and is especially suitable for ultra-deep hydrodesulfurization reaction of diesel oil.

The invention discloses a rare earth-supporting hybrid metal organic skeleton material preparation method, which comprises: (1) adding 1,4,5,8-naphthalene tetracarboxylic acid and a copper source into a solvent, mixing uniformly, carrying out first ultrasonic treatment, adding a soluble starch aqueous solution when a precipitate appears, and continuously carrying out second ultrasonic treatment; (2) filtering the obtained mixture, placing the solid obtained through the filtering into an acetone aqueous solution containing an ammonium salt, stirring, filtering, carrying out water washing, and drying to obtain a hybrid metal organic skeleton material; and (3) loading a rare earth metal inorganic salt onto the metal organic skeleton material so as to obtain the rare earth-supporting hybrid metal organic skeleton material. According to the present invention, the hybrid metal organic skeleton material prepared through the method has characteristics of strong thermal stability, suitable pore structure, more activity sites and good spatial symmetry, and can be used for the adsorption and desulfurization process of gasoline, diesel oil, and other fuel oils.