40results about How to "Increase contact reaction area" patented technology

The invention relates to a cavitation-microbiological fuel cell reactor and a method thereof for processing wastewater. The reactor comprises a reactor body (1), a raw water tank (2), a water inlet pump (3), cavitation generators (4), a microbiological fuel cell assembly (5), a water inlet (6), a water distribution clapboard (7) and a water outlet (8), wherein wastewater to be processed enters the bottom of the cavitation-microbiological fuel cell reactor from the raw water tank through the water inlet pump, the transferring of electrons in the wastewater is increased through the action of multiple groups of cavitation generators arranged on the bottom, then, the wastewater is subjected to the action of the upper microbiological fuel cell to remove organic matters in sewage, the COD (Chemical Oxygen Demand) removal rate of the processed wastewater is higher than 94.5%, and the removal rate of total nitrogen is higher than 95.3%.

The invention relates to a hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel, which can be used for an electro-catalysis hydrogen evolution reaction in alkaline solution and is capable of simultaneously loading base metals and a preparation method thereof, and belongs to the technical fields of material science and hydrogen production by electro-catalysis. The technical problem to be solved is to provide the composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and a preparation method thereof. A method of plating a composite coating on an electro-mechanical surface is adopted, and copper and cobalt are electro-plated on the three-dimensional foamed nickel in sequence, so that the composite hydrogen evolution electrode is prepared. The prepared electrode has high catalytic activity, is non-toxic, and can keep stable structure and chemical activity under an alkaline condition. In addition, the preparation process of the composite hydrogen evolution electrode is simple, and is suitable for large-scale production.

An industrial flue gas membrane method dust collector and desulfurizer comprises a casing, an air inlet and an exhaust outlet are arranged on the casing; a flow stabilizer is arranged in the casing, and the flow stabilizer is located directly in front of the air inlet; the casing The upper and / or the flow stabilizer is provided with a negatively charged film bubble applicator, and the lower part of the casing is a dust collecting hopper. The invention can effectively solve the problem of collecting and trapping fine dust (aerosol PM2.5) with strong penetrating power, and can effectively remove fine dust (aerosol PM10 and PM2.5) and SO2 in the flue gas of industrial enterprises, So as to effectively complete the dust collection and desulfurization.

The invention discloses a method for dedusting, desulfurization, denitration and dioxin removal of boiler flue gas. The method comprises the following steps: extracting flue gas having a temperature of 250-350 DEG C from a boiler, injecting bicarbonate with a size of 600-700 meshes into the flue gas, and carrying out a reaction; and adding a reducing agent into the reacted flue gas, and allowing the flue gas to enter a denitration-dedusting composite device for denitration, dioxin removal and dust removal. The denitration-dedusting composite device comprises a shell, a partition plate and a plurality of basalt fiber filter cartridges, wherein the partition plate is arranged on a cross section of the shell and divides the shell into a first chamber and a second chamber; the sidewall of the shell of the first chamber is provided with a flue gas inlet; the sidewall of the shell of the second chamber is provided with a flue gas outlet; each basalt fiber filter cartridge is a hollow tube body, and basalt fiber cotton is bonded with a catalyst; each basalt fiber filter cartridge is mounted on the partition plate, and the basalt fiber filter cartridges are all located in the first chamber; and the opening of each basalt fiber filter cartridge is in communication with the second chamber.

The invention discloses a method for reducing large-scale calcium-aluminate inclusions in steel. The method is to control Al 2 o 3 ‑Decarburization depth of C-quality submerged nozzle refractory material, to achieve the purpose of reducing large-scale calcium-aluminate inclusions; the continuous casting refractory involved is a tundish submerged nozzle, and the main component of the submerged nozzle refractory material is oxidation Aluminum and carbon; in steelmaking production, by controlling Al 2 o 3 ‑Decarburization depth of C-quality submerged nozzle refractory materials to reduce large-scale calcium-aluminate inclusions. The steel type produced by the method of the invention can greatly reduce the quantity of large-size calcium-aluminate and improve the quality of steel products.

The invention relates to the field of negative electrode materials for lithium-ion batteries, and discloses a silicon@carbon / MXene ternary composite material for lithium-ion batteries and a preparation method thereof. The silicon@carbon / MXene ternary composite material is a ternary composite material obtained by performing a self-polymerization reaction of dopamine hydrochloride on the surface of a silicon material to form a polydopamine layer, and then mixing and cross-linking with MXene in a liquid phase, followed by high-temperature treatment. In this method, the secondary amine group of polydopamine on the surface of the silicon material can undergo a crosslinking reaction with the hydroxyl group on the surface of the MXene to form a covalent bond or a hydrogen bond, thereby inhibiting the agglomeration of the silicon material and MXene and improving the electrochemical performance of the silicon material. Among them, the size of the silicon material is 20-500nm, the thickness of the carbon coating layer is 3-10nm, and the mass ratio of silicon to MXene is (0.5-4):1. The resulting silicon@carbon / MXene ternary composite has a pore volume of 0.05‑0.3 cm 3 / g, the specific surface area is 60‑120m 2 / g. The silicon@carbon / MXene ternary composite material is used as the anode material of lithium-ion batteries, showing excellent cycle performance and rate performance.