10results about How to "Reduce entrainment" patented technology

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The utility model relates to a kind of for prothioconazole oxidation synthesis light heavy component automatic separation device, belong to chemical production technical field, including prothioconazole oxidation synthesis component phase tank, mixed liquor regulating valve, light component regulating valve, heavy component regulating valve, flowmeter, mixed liquor regulating valve, light component regulating valve, heavy component regulating valve, flowmeter are all set to prothioconazole oxidation synthesis component phase tank, prothioconazole oxidation synthesis component phase tank is provided with mixed liquor feed inlet, light phase outlet, heavy phase outlet, blow-off, the utility model, optimization tank body structure realizes unpowered high-efficiency separation, reduce equipment cost, improve separation precision and product purity, by phase tank stratification structure optimization, light / heavy phase outlet height difference design and valve control, to effectively reduce entrainment rate, interface height and flow are monitored in real time, dynamically regulate valve opening, when heavy component proportion increases, automatically increase heavy component valve opening, to effectively reduce artificial dependence.

The present application relates to a kind of vane and impeller with the vane, vane includes vane body, the front end of the vane body is vane leading edge, rear end is vane trailing edge;The thickness of the vane body is gradually increased thick gradually decreasing from vane leading edge to vane trailing edge, and form a smooth vane body;The maximum camber position of the cross section of the vane body is located at 25%-75% of vane chord length.The vane of the present application can effectively save material and reduce noise by changing the maximum camber position of vane cross section and using front bending and rear sweep form.

The application relates to the technical field of wastewater treatment, and particularly discloses a high-efficiency recovery and biochemical carbon source method for sodium acetate in acephate wastewater. The high-efficiency recovery and biochemical carbon source method for sodium acetate in acephate wastewater comprises the following steps: solvent recovery, high-temperature hydrolysis, methanol recovery and evaporation concentration are performed on acephate wastewater to obtain a salt-containing concentrated mother liquor and condensate water A; the salt-containing concentrated mother liquor is subjected to centrifugal separation to separate out a mixed salt containing sodium sulfate and sodium phosphate, and a salt-separated mother liquor is obtained; the salt-separated mother liquor is continuously cooled and crystallized to obtain a crystal slurry containing sodium acetate crystals; the crystal slurry containing the sodium acetate crystals is subjected to centrifugal separation to obtain a sodium acetate product and a crystallization mother liquor; part of the crystallization mother liquor is returned to a sodium acetate crystallization system to adjust the solid content of the crystal slurry, and the other part is subjected to drying treatment to obtain a mixed salt and condensate water B; the condensate water A and the condensate water B are sent to a biochemical system for treatment, and treated water is obtained.

This utility model relates to the field of esterification reaction technology, and more particularly to a reactive distillation column for esterification. The technical solution includes a column body with multiple inspection ports on the front for subsequent maintenance. Each inspection port has a closure door on its front. The column body contains multiple trays for providing a gas-liquid interface. Each tray has multiple gas riser holes on its surface. The top of each tray has multiple trapezoidal protrusions to increase the mass transfer area. Above the trays are multiple sets of arc-shaped baffles to reduce mist entrainment. Each set of trapezoidal protrusions has gas-phase injection holes inclined at 45 degrees on both sides. This utility model, through the arrangement of trapezoidal protrusions, gas-phase injection holes, and arc-shaped baffles, can force intense turbulence between the gas and liquid phases within the gaps between the protrusions, increasing the mass transfer area and improving separation efficiency. Simultaneously, it can utilize the principle of inertial collision to capture the liquid phase in the gas phase, reducing mist entrainment and improving product purity.

The utility model relates to a kind of energy storage box-type substation, including box, top of box is provided with top cover, fan is provided in top cover, top cover is opened with air outlet, first air inlet is opened on the side plate of box, dustproof box is located in the first air inlet side and is attached to the dustproof box inside wall in box is provided, vertical baffle is provided in dustproof box, baffle will dustproof box internal space be divided to form with first air guide cavity and second air guide cavity, the lower part of the side plate of dustproof box close to the inner wall of box is opened with second air inlet, so that first air guide cavity is communicated with first air inlet, third air inlet is opened in the upper portion of baffle, which is communicated with first air guide cavity and second air guide cavity, the lower part of the side plate of dustproof box away from the inner wall of box is opened with fourth air inlet, so that second air guide cavity is communicated with the inside of box. This energy storage box-type substation reduces the accumulation of dust in the box by the dustproof effect of dustproof box, ensures the long-term normal operation of the power distribution equipment in the box, and the dustproof structure has low cost and does not need maintenance.

This application relates to the field of phosphoric acid preparation technology, and more particularly to a method for preparing industrial-grade phosphoric acid based on hydrochloric acid decomposition of phosphate rock. The method includes: pulping phosphate rock to obtain a phosphate rock slurry; acidifying the phosphate rock slurry with hydrochloric acid to obtain an acid-hydrolyzed slurry; filtering the acid-hydrolyzed slurry to obtain an intermediate filter material; extracting the intermediate filter material using a composite extractant to obtain calcium chloride product and a supported organic phase; and reverse-extracting the supported organic phase with water to obtain dicalcium phosphate product and industrial-grade phosphoric acid. The extraction is performed in a rotary microchannel device. The composite extractant comprises a mixed organic phase of trioctylamine, tributyl phosphate, and triethylamine in decreasing mass concentrations. This method, through the synergistic effect of multi-stage gradient impurity removal throughout the entire process and deep purification by a core innovative unit, improves the purity and yield of phosphoric acid produced by wet acid hydrolysis from three dimensions: pre-removal of impurities at the source, selective separation of core soluble impurities, and precise interception of trace impurities at the terminal stage, while achieving full recovery of phosphate rock.

This invention discloses a high-pressure gas-liquid separation and return device, comprising a first high-pressure tank and a second high-pressure tank. The first high-pressure tank has an inlet pipe at its top, extending to its bottom. Inside the first high-pressure tank, from top to bottom, are arranged a three-stage gradient sintered filter element, a baffle plate, and a flow deflector. The upper part of the first high-pressure tank is connected to the second high-pressure tank via a gas pipe. The second high-pressure tank has a fiber filter surface, an outlet at its top, and a liquid return port at its bottom. This device has a compact structure, can operate efficiently under high pressure, exhibits excellent separation efficiency, significantly reduces liquid entrainment, and meets the high-pressure gas-liquid separation requirements of many fields such as chemical engineering and energy.

The application relates to a low-temperature concentration method for reducing crystallization entrainment. The low-temperature concentration method for reducing crystallization entrainment described in the application introduces small-molecule gas to form hydrate crystal nuclei or small crystals to serve as the crystal seeds of the freeze concentration before the stage of the freeze concentration crystallization phase change, can reduce the freeze concentration crystallization supercooling degree, and promotes the freeze concentration to occur. In the stage of the freeze concentration phase change, the gas is continuously introduced to enhance the heat transfer, increase the nucleation points, promote the crystallization to occur, form more small ice crystals, effectively reduce the generation of large ice crystals, and reduce the entrainment rate. Compared with single freeze concentration, the low-temperature concentration method for reducing crystallization entrainment adopting the embodiment of the application saves time by more than 10%, reduces the ice crystal entrainment rate by more than 10%, and improves the quality by more than 15%.

The invention relates to a method for preparing potassium sulfate and sodium sulfate by fully utilizing lithium extraction residual liquid. The method comprises the following steps: (1) performing first evaporation concentration crystallization on the lithium extraction residual liquid to obtain an anhydrous sodium sulfate product and first crystallization filtrate; (2) cooling and crystallizing the first crystallization filtrate obtained in the step (1) to obtain mirabilite and a second crystallization filtrate; (3) carrying out second evaporation concentration crystallization on the second crystallization filtrate obtained in the step (2) to obtain a crude potassium sulfate product and a third crystallization filtrate; (4) mixing the crude potassium sulfate product obtained in the step (3), a calcium additive and water, and carrying out precipitation reaction to obtain double salt precipitate and post-precipitation liquid; and (5) mixing the double salt precipitate obtained in the step (4) with water, carrying out a dissolution reaction, filtering after the reaction to obtain a filtrate and a calcium precipitate, and carrying out third evaporation, concentration and crystallization on the filtrate to obtain a high-purity potassium sulfate product. According to the method, full-quantitative recovery of sodium and potassium in the lithium extraction residual liquid and preparation of high-value products are realized, and the economic value is good.