12 results about "Co detection" patented technology

The invention discloses a CO detection device for a monorail crane diesel engine, and relates to the technical field of gas detection equipment, the CO detection device comprises a mounting box, a detection assembly is arranged on one side in the mounting box, the detection assembly comprises a detection box, a gas chamber is arranged in the detection box, a laser detector is arranged in the gas chamber, and the laser detector is arranged in the detection box. One end of the air chamber is fixedly connected with an air inlet filtering assembly, and one side of the detection assembly is provided with a back-flushing cleaning assembly used for cleaning the air inlet filtering assembly; one end of the mounting box is rotationally connected with a butt joint used for being in butt joint with an exhaust pipe of the diesel engine. Sampled flue gas is filtered through the gas inlet filtering assembly, high-pressure flue gas is stored through the high-pressure gas storage cavity, the high-pressure flue gas is discharged to the gas inlet filtering assembly when needed through control of the backflushing electromagnetic valve, filter material carbon deposition is removed through gas reverse impact force, and the trouble of frequent manual replacement and maintenance is avoided.

When the sensor triggers a dynamic event, transient response data segments are captured with high resolution, dynamic fingerprints reflecting different gas physicochemical property differences are extracted from the transient response data segments, then gas types are classified, gas identity probability distribution is obtained, and on the basis, the carbon monoxide sensor is obtained. The final CO concentration is calculated in combination with the transient response data segment, and risk assessment is performed based on the concentration to quantify the interference alarm level. Through the mode, the risk of missing report of a traditional electrochemical CO sensor under cross interference is solved, and the accuracy, robustness and intelligent level of CO detection are remarkably improved.

This invention relates to the field of cement production technology and discloses a method for evaluating the combustion state of a cement kiln based on sulfur detection. The method includes the following steps: S1, within a set time period, obtaining a fixed amount of hot raw meal from the feed pipe of the final preheater and a fixed amount of clinker from the clinker hopper; S2, detecting the mass percentage of sulfur in the obtained hot raw meal and clinker, and determining the sulfur circulation ratio M within the cement kiln based on the ratio of the mass percentage of sulfur in the hot raw meal to the mass percentage of sulfur in the clinker; S3, evaluating the combustion state at a set process location within the cement kiln based on the sulfur circulation ratio, and identifying process locations with unreasonable combustion states. This method overcomes the limitations of traditional methods that rely solely on CO detection at the kiln tail and smoke chamber, which cannot accurately reflect the fuel combustion state. Therefore, it can more accurately and promptly evaluate the fuel combustion state within the kiln system and quickly determine process locations that need adjustment.

The invention discloses CO detection equipment based on an unmanned aerial vehicle, a NiCo2O4 / Ti3C2MXene composite material contained in the CO detection equipment and a preparation method of the NiCo2O4 / Ti3C2MXene composite material, and belongs to the technical field of gas sensors. According to the invention, a novel NiCo2O4 / Ti3C2MXene heterostructure is developed through a hydrothermal synthesis method, the novel NiCo2O4 / Ti3C2MXene heterostructure is used for high-sensitivity carbon monoxide (CO) detection, the response to 100 ppm of CO at 110 DEG C reaches 139.5%, and the response time is 39 seconds. The performance improvement is derived from the synergistic effect between NiCo2O4 and MXene, the density functional theory (DFT) calculation reveals the reduction of CO adsorption energy, and the in-situ Raman spectrum directly observes the reversible CO chemical adsorption / desorption process at the heterogeneous interface. Then, the sensor is integrated on a miniature unmanned aerial vehicle platform, and drawing of a real-time three-dimensional gas distribution diagram is completed within 3 minutes.

This invention discloses a carbon monoxide sensor and its filter preparation method. The filter comprises an activated carbon cloth layer and a thin film layer formed by slurry printing; the slurry contains, by mass, 20-60 parts of metal oxide, 5-10 parts of binder, 8-15 parts of dispersant, 40-80 parts of carrier, and 50-80 parts of solvent. In the preparation process, the metal oxide and dispersant are first mixed in ultrapure water, dried at 135°C, and crushed. Then, the mixture is ball-milled with the binder, carrier, and solvent to obtain the slurry. Finally, the slurry is printed onto a breathable substrate using a steel mesh or screen printing process to form a film. This sensor utilizes the activated carbon cloth to preferentially adsorb most organic vapors. Simultaneously, the metal oxide, after modification with the dispersant, has increased surface active sites, which can further catalyze the oxidation or chemical adsorption of residual organic vapors, effectively suppressing their poisoning or cross-interference on the electrochemical electrode. The printed thin film is dense and uniform, and combined with the ball milling composite process, it significantly improves the resistance to organic vapor interference, ensuring the selectivity and long-term stability of CO detection.

The utility model relates to the technical field of energy conservation and emission reduction in metallurgy, in particular to a solid-state treatment system for reducing gas consumption of a pellet reduction furnace. A gas inlet is formed in the bottom of the reduction heating electric furnace, and a CO inlet and an N2 inlet are formed in a gas inlet pipeline of the reduction heating electric furnace; a backflow gas inlet is formed in a gas inlet of the reduction heating electric furnace; the heat exchange type water cooling device is connected with a gas outlet of the reduction heating electric furnace; the hot air pump is connected with an air outlet of the heat exchange type water cooling device; the solid amine storage tank is connected with an air outlet of the hot air pump; a branch is arranged on a pipeline between the reduction heating electric furnace and the heat exchange type water cooling device; an exhaust valve, a CO detection sensor, an electronic ignition device and a safety valve are arranged on the branch; and a gas outlet of the solid amine storage tank is connected with the backflow gas inlet. Experiments show that the solid-state treatment system provided by the utility model is extremely low in gas consumption.

This invention proposes a bimetallic MOF-derived In 2 O 3 / Fe 2 O 3 Heterogeneous gas-sensitive materials, preparation methods, and applications. This invention features a simple and low-cost preparation process. It involves preparing a metal-organic framework In / Fe-MOF, and subsequently deriving In materials with n-n type heterostructures. 2 O 3 / Fe 2 O 3 Heterogeneous gas-sensitive materials utilize heterojunctions to create more oxygen vacancies, increasing the number of active sites and thus the concentration of adsorbed oxygen participating in the sensing reaction. Furthermore, the unique hollow porous structure provides even more adsorbed oxygen for gas diffusion and adsorption, further enhancing the gas-sensing effect on CO and improving the performance of pure In. 2 O 3 The gas-sensitive material exhibits an extremely high response to CO, along with excellent repeatability and selectivity. It can be used for highly sensitive CO detection, which is of significant practical importance for monitoring and real-time CO detection in industrial production activities.

The invention discloses a method for testing CO elimination in a 20L ball explosion system in a laboratory, and relates to the technical field of fire safety and gas detection and processing, and the method comprises the steps: preparing the 20L ball explosion system, a CO detection device, a CO elimination device, an ignition device and a data recording device, and checking the integrity and connection sealing performance of each device; the method comprises the following steps: putting a combustible substance to be tested into a 20L ball explosion system according to a set dosage, and sealing the system; the CO detection device is calibrated, and the detection precision of the CO detection device is ensured; the ignition device is started to trigger explosion, the CO eliminating device and the CO detecting device are started at the same time, and the data recording device records the CO concentration once every 5-15 seconds and continuously records the CO concentration for 4-6 minutes; according to the CO concentration data recorded by the data recording device at different time points, a curve of the CO concentration changing along with time is drawn. The high-precision CO detection device has the advantages that the high-precision CO detection device is adopted and strictly calibrated, CO concentration changes at different time points after explosion can be accurately captured, and the accuracy of a test result is improved.

The invention discloses a high-temperature corrosion risk hierarchical control method and system based on flue gas CO distribution characteristics. The system comprises a distributed CO detection array, an embedded processor and an execution module. The distributed CO detection array collects the CO concentration of a hearth outlet in real time; the embedded processor runs a distribution function correction algorithm; the execution module adjusts the operation oxygen amount or the opening degree of a wall-attached air door and a secondary air door according to the risk level. At present, most units cannot realize online detection of the CO concentration in the adherent atmosphere, the system monitors the high-temperature corrosion risk level of the water cooling wall through the CO concentration of a hearth outlet, a differential control strategy is provided, the high-temperature corrosion problem of the water cooling wall of the boiler is effectively relieved, and the efficiency of the boiler is improved.

The invention discloses a Pd-SnO2 / CMK-3 gas-sensitive composite material, a preparation method thereof and application of the Pd-SnO2 / CMK-3 gas-sensitive composite material in CO room-temperature sensing, and the preparation method comprises the following steps: grinding and mixing PdCl2 and SnO2, then adding CMK-3, continuously grinding so that a sample finally presents uniform black powder, and then calcining to obtain the Pd-SnO2 / CMK-3 gas-sensitive composite material. The Pd-SnO2 / CMK-3 nano gas-sensitive composite material provided by the invention can realize high-sensitivity CO detection in a low-temperature range from room temperature to 100 DEG C; excellent response / recovery characteristics are achieved, the response time is short, and recovery is rapid; the material is simple in preparation process, good in repeatability and suitable for large-scale application.

The utility model discloses an anti-blocking and anti-spontaneous combustion system for a stock bin, and relates to the technical field of production safety. Comprising a stock bin, an anti-blocking device, a gate valve, a discharging and feeding machine, a wall cleaning device, a temperature monitoring device, an anaerobic system, a CO detection device and a control system. An anti-blocking device is arranged in a material unloading area of the stock bin; a wall cleaning device is arranged on the side wall or the inner surface of the stock bin; a discharging and feeding machine is arranged at the bottom of the stock bin, and the gate valve is arranged between a discharging opening of the stock bin and a feeding opening of the discharging and feeding machine. The medium release end of the anaerobic system is communicated with the stock bin, the temperature monitoring device is arranged on the side wall or in the stock bin, and the CO detection device is arranged in the top space of the stock bin; the control system is used for receiving monitoring signals of the temperature monitoring device and the CO detection device and controlling the operation states of the anti-blocking device, the wall cleaning device and the anaerobic system. The utility model has the functions of preventing blockage and spontaneous combustion of the stock bin.

The invention relates to a sponge iron adsorbed gas content detection device and a treatment method, and belongs to the technical field of non-blast furnace ironmaking in the metallurgical industry. According to the technical scheme, the device comprises a sampling belt (2), a sampling box body (6), a box body cover plate (7), a gas detector (8), a CO detection meter (9), an H2 detection meter (10) and an oxygen detection meter (11), the sampling belt (2) is arranged between a discharging device (1) and a conveying belt (3), the CO detection meter (9), the H2 detection meter (10) and the oxygen detection meter (11) are arranged on a vestibule of the sampling belt (2), the sampling box body (6) is arranged below the sampling belt (2), and the box body cover plate (7) is arranged on the sampling box body (6). The box body cover plate (7) and the gas detector (8) are matched with the sampling box body (6); and a plurality of sampling box bodies (6) are arranged side by side. The method has the beneficial effects that the whole-process safety management and control of the sponge iron in the transportation process are realized, and the safe and stable operation of the sponge iron transportation operation is effectively guaranteed.