4results about How to "Raw material stability" patented technology

The application discloses a synthesis method of C3-substituted quinoxaline ketone derivatives and application thereof. A series of C3-substituted quinoxaline ketone derivatives with both terpene and quinoxaline ketone biological activity skeletons are obtained by using N-alkoxy phthalimide and quinoxaline ketone as starting substrates, under the catalysis of a photocatalyst and visible light irradiation, and at a temperature of 55-65 DEG C for 10-15 h. The application has the advantages of stable and easy-to-prepare raw materials, mild reaction conditions, simple experimental operation, good chemical selectivity and functional group tolerance, and is a green chemical synthesis method with good application prospect. The activity experiment results show that the synthesized C3-substituted quinoxaline ketone derivatives have good inhibiting effect on the growth of plant pathogenic fungi.

The utility model relates to the technical field of blast furnace coal injection, and provides a blast furnace coal injection device which comprises a feeding cover and a plurality of bottom frames, the bottom frames are all fixed to the bottom of the feeding cover, a feeding pipeline is arranged on the outer side of the feeding cover, a feeding assembly is arranged in the feeding cover and the feeding pipeline, and the feeding assembly is arranged in the feeding cover and the feeding pipeline. The air inlet assembly is arranged at the inner bottom of the feeding cover, the feeding assembly comprises a spiral auger, the spiral auger is installed in a feeding pipeline, a dispersing cover is arranged on the periphery of the interior of the feeding cover, the feeding pipeline is communicated with the interior of the dispersing cover, a plurality of inlets are formed in the periphery of the bottom of the dispersing cover, and a pair of sliding rails is arranged at the top of the dispersing cover; a rotating cover is slidably connected to the sliding rail, a plurality of pushing plates are arranged on the bottom face of the rotating cover, and a protruding layer is arranged on the surface of the rotating cover. By means of the technical scheme, the technical problems that in the prior art, due to the technical bottlenecks of uneven feeding and excessive internal residues, the pulverized coal conveying efficiency is low, and combustion is insufficient are solved.

This invention belongs to the field of traditional Chinese medicine, specifically relating to a traditional Chinese medicine composition for treating rosacea, its preparation method, and its application. This invention provides a traditional Chinese medicine composition for treating rosacea, comprising dandelion, purslane, sophora flavescens, sophora japonica flower, and rhubarb. The traditional Chinese medicine composition of this invention has the effects of clearing heat and detoxifying, reducing inflammation and antibacterial properties, cooling blood and promoting blood circulation, and repairing the skin barrier. It can be used to treat erythematous rosacea, relieving erythema, telangiectasia, papules, itching, and burning sensation on the skin, and reducing the risk of recurrence.

The application belongs to the field of new energy materials, and provides a preparation method of stannous iodide, which comprises the following steps: adding hydriodic acid into ultrapure water to configure a solution A; adding a tin source into pure water, and then adding an antioxidant to form a solution B; adding the solution A into the solution B, heating and reacting, and then adding a reaction catalyst, stirring, and obtaining an orange-red solid; separating the orange-red solid from a liquid, washing, and vacuum drying to obtain a crude stannous iodide; performing a first heating process on the crude stannous iodide to separate the stannous iodide from oxidized impurities; and then performing a second heating process to obtain stannous iodide for perovskite batteries through high-temperature purification; wherein the tin source contains divalent tin ions. The preparation method has mild reaction conditions, simple raw material acquisition and preservation, high reaction efficiency, and the prepared finished product has high quality and high purity and is not easy to be oxidized, and is used in narrow-bandgap perovskite solar cells and laminated solar cells, and the photoelectric conversion efficiency is significantly improved.