11results about How to "Improve the capture effect" patented technology

The invention discloses multi-adsorption-site nitrogen-doped porous carbon, a preparation method and application in iodine adsorption, and the preparation method comprises the following steps: carrying out primary calcination on a zeolite imidazate framework material, mixing with potassium hydroxide, and then carrying out secondary calcination to obtain the multi-adsorption-site nitrogen-doped porous carbon. According to the invention, a zeolite imidazate framework material is used as a precursor, potassium hydroxide is introduced for high-temperature calcination activation treatment, the obtained product inherits a rhombic dodecahedron framework of ZIF-8, a continuous through pore system and a nitrogen-doped carbon material with high pyrrole nitrogen content are formed, and the static adsorption capacity of the nitrogen-doped carbon material to iodine can reach 7.99 g / g.

This application relates to the field of cold trap technology for freeze dryers, and provides an external two-stage cold trap for freeze dryers capable of secondary water capture. The cold trap includes a freeze-drying chamber, a water vapor capture system, and a vacuum system. The vacuum system includes a vacuum pump, and the water vapor capture system includes a primary cold trap and a secondary cold trap. The freeze-drying chamber is sealed to the primary cold trap, the primary cold trap is sealed to the secondary cold trap, and the vacuum pump is sealed to the secondary cold trap. The advantages of this invention are: the external two-stage cold trap structure significantly improves water vapor capture efficiency through two-stage condensation, reduces the load on the vacuum pump, the parallel lower-positioned cold trap layout saves space and facilitates maintenance, the optimized airflow path design makes water vapor distribution more uniform, avoids local frost and blockage, the vertical pipe connection enhances system sealing, reduces energy consumption, and extends equipment lifespan.

The invention discloses a range hood which comprises an exhaust fume collecting hood and a fan system, the fan system further comprises an upper air inlet, a lower air inlet, an exhaust fume collecting hood, an exhaust fume collecting hood and an exhaust fume collecting hood, and the upper air inlet is formed in a shell of the fan system, penetrates through the shell of the fan system and is communicated with the air inlet end of a fan of the fan system; the flow guide cover is arranged in the upper air inlet in a penetrating manner, an outlet of the flow guide cover corresponds to a fan air inlet end of the fan system, the flow guide cover extends in the height direction of the range hood, and an inlet of the flow guide cover extends outwards from a shell of the fan system; the driving part is arranged on the shell and used for driving the flow guide cover to do reciprocating motion in the height direction of the extractor hood, the calculation formula of the ratio coefficient of the flow of the upper air inlet to the total flow of the extractor hood is shown in the specification, delta is the ratio of the flow of the upper air inlet to the total flow of the extractor hood, and delta is the ratio of the flow of the upper air inlet to the total flow of the extractor hood. S is the stroke of the inlet of the flow guide cover in the height direction of the range hood.

This invention discloses a highly regenerable absorbent for capturing carbon dioxide, its preparation method, and its application, relating to the field of gas separation and purification technology. The absorbent comprises a main absorbent component, a co-absorbent component, an active component, an antioxidant, an auxiliary agent, and water. The absorbent provided by this invention, by introducing the antioxidant 2,6-di-tert-butyl-4-methoxyphenol with a specific structure and the auxiliary agent 1-isopropyl-3-pyrrolidone, synergistically combines with the main absorbent component, the co-absorbent component, the active component, and the solvent water. It exhibits excellent absorption and desorption rates and low-temperature capture performance during CO2 capture, significantly reducing capture energy consumption and improving capture efficiency, thereby reducing operating costs. It is suitable for the capture and treatment of CO2-containing waste gas.

The application relates to a turbocharging auxiliary dust collection method for a machining center, which comprises the following steps: S1, providing a turbocharging auxiliary dust collection device; S2, when cutting is carried out, the main shaft of the machining center drives the rotation of a turbine body, and a negative pressure airflow is formed in the circumferential direction of the turbine body through a first groove and a fluid channel during the rotation; S3, the dust generated in the machining area of the machining center and the airflow first enter an air inlet area through a separator cover, and are guided and dispersed by guide ribs and turbulence ribs arranged in the circumferential direction of the separator cover before entering the first groove; S4, the airflow and the dust carried by the airflow after being adjusted by the guide ribs and the turbulence ribs enter the first groove and are distributed to each fluid channel, and the airflow is accelerated in the fluid channel through a converging flow channel structure; and S5, the airflow carrying the dust and the chips is sprayed to the outside space of the turbine body at an angle of 30 DEG to 55 DEG relative to the rotation axis when leaving the fluid channel through the acceleration of the airflow.

The utility model provides a kind of Raymond mill dust removal flow guide device, belong to flow guide device technical field, the Raymond mill dust removal flow guide device includes: dust removal flow guide cylinder, top collecting cover, bottom support seat, cyclone separator, flow guide vane assembly and sealing connecting ring;Dust removal flow guide cylinder is conical platform shape, dust removal flow guide cylinder is fixedly installed above the discharge port of Raymond mill by support seat;Collecting cover is hemispherical structure;Cyclone separator is arranged at the center position inside dust removal flow guide cylinder, annular passage is formed between the outer wall of cyclone separator and the inner wall of dust removal flow guide cylinder;Flow guide vane assembly includes multiple flow guide vanes, another end of flow guide vane and the inner wall of dust removal flow guide cylinder keep preset gap;Sealing connecting ring is arranged at the connecting position of dust removal flow guide cylinder and Raymond mill discharge port, solve the dust separation efficiency low in existing Raymond mill dust removal system, cause environmental pollution and resource waste, affect the air quality of production workshop problem.

This utility model belongs to the field of grinding and dust removal technology, specifically relating to an explosion-proof wet dust collector. It includes a dust removal chamber, with a mounting frame on the top of the chamber to fix a fan. The fan's inlet connects to the inside of the chamber, and its outlet connects to the exhaust port. A dust extraction pipe is installed on the side wall of the chamber, passing through a water extraction pipe and connecting to a circulating water pump. The bottom, top, and middle sections of the chamber are equipped with bottom, upper, and middle partitions at an angle. A liquid seal is formed by submerging the bottom partition by 3mm to 5mm, which, combined with the oblique and reverse airflow channels formed by the multiple partitions, promotes thorough mixing of dust and liquid and condensation of water vapor. The circulating water pump delivers the liquid through a pipe to the nozzle at the inlet of the dust extraction pipe, flushing the inner wall to prevent dust accumulation. This design combines explosion-proof performance with high-efficiency dust removal capabilities, has a compact structure, and low cost, making it suitable for small-scale operating environments such as small and medium-sized processing plants.

The invention discloses an interstage cooling and separating integrated device for a vapor compression system, and belongs to the technical field of cooling and separating. The device comprises a shell, an atomization system, a modular demisting unit and a silk screen self-cleaning unit, a partition plate is arranged in the shell and divides the shell into an upper cavity and a lower cavity, an isolation silk screen is arranged on the partition plate, and the atomization system comprises an atomization nozzle; the device further comprises a separation cavity, the separation cavity is arranged at an inlet of the air outlet pipe through flexible connection, and the modular demisting unit comprises a separation silk screen; the silk screen self-cleaning unit comprises a sliding cavity, a sliding block and a thin plate, the thin plate can move upwards when blown by airflow, the sliding block can be driven to move up and down in the sliding cavity to generate vibration, and liquid drops on the separation silk screen are separated. According to the invention, the functions of interstage cooling and gas-liquid separation are integrated, the number and occupied area of equipment are reduced, the separation silk screen can vibrate along with the separation cavity, liquid drops gathered on the separation silk screen are separated from the separation silk screen due to vibration, the cleaning capability is excellent, and the service life of the silk screen can be prolonged.

The invention discloses a hydropower station gas pipeline monitoring system based on multi-source data, and belongs to the technical field of monitoring analysis. The method is used for solving the technical problem of poor robustness of a monitoring system in an existing scheme. Through space-time two-dimensional correlation filtering, a dynamic characteristic matrix is fused with time domain difference and frequency domain dominant frequency components, and a sensor weight dynamic adjustment mechanism, data reliability under extreme working conditions is ensured. Through recursive estimation of a pressure fluctuation coefficient alpha and self-adaptive adjustment of a leakage risk index lambda, full life cycle pressure change accurate tracking of start-stop impact-stable operation-aging fluctuation is carried out on a hydropower station pipeline, and the problem of misinformation of single parameter monitoring is solved. Through combined input of the pressure fluctuation coefficient alpha, the leakage risk index lambda and the dynamic characteristics, the capturing capability of the LSTM on the pressure fluctuation-leakage risk coupling relation is improved, and the fault identification accuracy can be effectively improved.

The application discloses an online detection method for volatile organic compounds based on gas chromatography, and relates to the technical field of gas chromatography analysis.The method is characterized in that: the air to be detected is introduced into a pretreatment pipeline with a built-in spiral condenser for low-temperature enrichment, and then the concentrate is transferred to a resolution chamber through instantaneous heating.Subsequently, the carrier gas carries the resolved material into a gas chromatography separation column, and the components are separated in time sequence through programmed temperature rising.The separated components are detected by a flame ionization detector to generate an original spectrum containing retention time and peak area data.Finally, the original spectrum data are compared with a pre-stored volatile organic compound fingerprint feature library, the target species are matched according to the retention time, and the concentration is directly calculated by using the standard peak area response coefficient in the library to output the detection result.The method improves the enrichment and resolution efficiency through spiral condensation and instantaneous thermal resolution, realizes rapid qualitative and quantitative analysis by using the fingerprint feature library, and improves the automation level and analysis efficiency of online monitoring.

The application provides a polishing device for a curved workpiece, and multiple cleaning and dust collecting components in a ring array are arranged on the outer peripheral edge of a grinding wheel, each of the cleaning and dust collecting components comprising a dust collecting part and a detection part. The detection part can first roll against the curved surface to be polished and move along the axial direction of the grinding wheel according to the profile of the curved surface, and the dust collecting part is synchronously adjusted by a first transmission part, so that the dust collecting end rotates correspondingly while moving along the axial direction of the grinding wheel, so that the position and orientation of the dust collecting end can be adaptively adjusted according to the curvature of the curved surface, the dust collecting port is always close to the polishing area and the dust flying area, the dust collecting efficiency is improved, and the influence of the secondary falling of dust on the polishing quality of the curved surface is reduced.