8results about How to "Increase concentration difference" patented technology

The invention discloses a method for improving alkaline water electrolysis hydrogen production efficiency by using electrolyte concentration difference, and belongs to the technical field of water electrolysis hydrogen production. The method comprises the following steps: adding KOH electrolyte with the concentration of 30wt% into the cathode region on one side of the diaphragm, and adding KOH electrolyte with the concentration of 35wt% into the anode region on the other side of the diaphragm; and electrifying the electrolytic bath, controlling the temperature to be 80-90 DEG C, and carrying out electrolytic reaction on the water under the action of the electric field. The hydrogen production efficiency of alkaline electrolyzed water is improved by utilizing the electrolyte concentration difference, the hydrogen production efficiency and the hydrogen purity can be improved, the energy consumption and the equipment cost can be reduced, the reliability and the durability of the system are improved, meanwhile, the environmental influence is reduced, and a positive role is played in promoting the production and the application of green hydrogen.

This invention provides a partition wall, a partition wall assembly, and an electrolytic cell that can suppress gas accumulation even when the partition wall separating the anode and cathode chambers of the electrolytic cell has recesses. The partition wall (8) of the electrolytic cell has a first main surface (20) and a second main surface (22) located on the side opposite to the first main surface (20). The first main surface (20) includes a first flat portion (24) and a plurality of first recesses (36) that are recessed from the first flat portion (24). The edges (40) of the first recesses (36) are rounded. The second main surface (22) includes a second flat portion (30) and a plurality of second recesses (42) that are recessed from the second flat portion (30). The edges (46) of the second recesses (42) are rounded.

The invention discloses an absorption enhancer and preparation method for improving the oral bioavailability of polypeptides, relates to the field of biological health care technology, including arginine grafted hyaluronic acid complex, enzyme inhibitor, and promotion auxiliary agent; the mass fraction of arginine grafted hyaluronic acid complex in the absorption enhancer for improving the oral bioavailability of polypeptides is 60-65%; the mass fraction of enzyme inhibitor in the absorption enhancer for improving the oral bioavailability of polypeptides is 5-8%; the rest are: promotion auxiliary agent; the enzyme inhibitor is pepstatin; the absorption enhancer for improving the oral bioavailability of polypeptides prepared by the method of the present invention is remarkable for the absorption effect of polypeptide oral liquid. The absorption enhancer prepared by the present invention is mainly capable of improving the absorption of components such as protein polypeptides by the gastrointestinal tract, making it easier to enter the physiological system circulation through the physiological barrier of the intestinal tract, improving absorption efficiency, and then improving oral bioavailability.

This invention discloses a method for preparing a TNTs / NiO@CoPi array electrode (TNCP) for photoelectrocatalytic water splitting, belonging to the field of photoelectrocatalytic new energy materials technology. The invention first prepares a highly ordered anatase TiO2 nanotube array (TNTs) using secondary anodic oxidation, then loads Ni nanoparticles onto the surface and inside the nanotubes via constant current electrodeposition, followed by high-temperature calcination to generate p-type NiO, constructing a TNTs / NiO p-n heterojunction (TN). Finally, it uses AM 1.5 simulated sunlight to selectively deposit an amorphous CoPi cocatalyst, where the CoPi only coats the NiO nanospheres without blocking the TiO2 mass transfer channels. This invention utilizes the p-n heterojunction to broaden the full-spectrum light absorption from 250 to 800 nm, and CoPi acts as a hole-trapping layer to suppress electron-hole recombination, significantly reducing interfacial charge transport impedance; the steady-state photocurrent of the TNCP deposition sample reaches 0.06 mA·cm⁻. 2 It is three times that of pure TNTs. This process involves no precious metals or highly toxic corrosive solvents, and the reaction conditions are mild. The electrodes produced can be used for photoelectric water splitting to produce hydrogen, photoelectric oxidation of organic pollutants, and ethylene glycol photoelectric fuel cells. They exhibit excellent cycle stability and have promising prospects for large-scale industrial applications.

The invention provides a high-purity crocin extraction and separation method and application thereof, and relates to the field of industrial dyestuff, the high-purity crocin extraction and separation method comprises the following steps: S1, raw material preparation, S2, device preparation, S3, crude extraction for later use, S4, preliminary purification and S5, advanced purification. The industrial dye is prepared from the following components in parts by weight: 0.3 to 0.7 part of high-purity crocin, 3 to 6 parts of ethanol, 0.1 to 0.3 part of citric acid, 3 to 5 parts of urea, 5 to 7 parts of table salt, 0.03 to 0.06 part of vitamin C, 0.04 to 0.07 part of sodium benzoate, 1.2 to 1.5 parts of natural plant color fixing agent, 1.2 to 1.5 parts of bio-based color fixing agent and the balance of deionized water. By using a multi-stage dynamic countercurrent ultrasonic extraction technology, crocin in a crushed gardenia raw material can be efficiently extracted, the concentration difference between a solvent and the raw material is gradually increased, the extraction efficiency is improved through multi-stage extraction, full contact of the solvent and the raw material is ensured, the extraction efficiency is improved through dynamic stirring, and plant cell walls are destroyed; ultrasonic-assisted acceleration of release of effective components is realized, and extraction efficiency is improved.

The utility model belongs to the technical field of chemical equipment, and particularly relates to an efficient dissolving device which comprises a dissolving kettle and a solvent kettle connected with the dissolving kettle, a dissolving kettle outlet in the bottom of the dissolving kettle is connected with a first inlet in the top of the solvent kettle through a connecting pipe, and a branch pipe and a siphon are further arranged on the connecting pipe. The branch pipe is connected with the top of the dissolving kettle, the siphon is connected with the dissolving kettle, and the branch pipe is also connected with a condenser. The solvent in the dissolving kettle can be periodically and automatically updated, so that the concentration difference in the dissolving process is improved, the large-scale continuous dissolving of materials is realized, and the dosage of the dissolving solvent is reduced.

The invention discloses a method for improving the electrolyte infiltration efficiency of a large-size power battery, and belongs to the technical field of power batteries, and the method comprises the following steps: carrying out surface micro-oxidation treatment on conductive carbon, so that the contact angle between the conductive carbon and an electrolyte used by a selected battery model is reduced to meet a preset requirement, and obtaining surface micro-oxidation conductive carbon; the surface micro-oxidation conductive carbon is assembled into a large-size power battery according to a selected battery model; liquid injection is performed twice in batches, a pure solvent is injected for the first time, and a high-concentration electrolyte is injected for the second time; and after packaging, standing at 45 DEG C to finish the infiltration process. Only a small amount of conductive carbon on the electrode plate is optimized, then electrolyte with different concentrations is used for step-by-step liquid injection, and surface micro-oxidation can be completed only in 5-30 min. The existing battery production process does not need to be greatly changed, and the input cost is relatively low. More efficient electrolyte infiltration is realized, the production time is shortened, and the production cost is reduced.

The fire cover comprises a plurality of first ignition holes which are formed in the circumferential direction of the fire cover, the first ignition holes are formed upwards in an inclined mode from inside to outside in the radial direction of the fire cover, and the tail ends of the first ignition holes are arranged on the inner side of the wall of the fire cover. The side wall of the fire cover is provided with a concave area which is concave towards the interior of the fire cover, the concave area comprises an upper wall face and a lower wall face, the plane where the upper wall face is located intersects with the plane where the lower wall face is located, and the upper wall face and the lower wall face both extend to the first fire hole, so that the concave area is communicated with the first ignition hole. The concave area is arranged on the fire cover, the collision violence degree and the secondary mixing degree of the gas mixture and air are different due to different distances from the spraying position of the gas mixture of different first ignition holes to the upper wall face of the concave area, concentration difference is formed, the disturbance degree of gas in the ignition area is improved, and the ignition effect is improved. And the ignition capability is enhanced.