188 results about "Oxygen analyzer" patented technology

The invention discloses a low-energy-consumption nitrogen-charging grain storage system and method, and relates to the field of nitrogen-charging grain storage. The method comprises the steps that compressed air is sequentially introduced into a filter set, a drying machine and a micro-oil adsorber to be purified and dried; stripping oxygen O2 molecules and water H2O molecules in the air by using a carbon molecular sieve pressure swing adsorption tower to obtain nitrogen N2 molecular gas; inputting nitrogen N2 molecular gas into a cold drying system, and cooling to a preset temperature range; detecting whether the concentration of the output nitrogen N2 molecular gas meets a preset concentration range or not by using an oxygen analyzer; and when the detected N2 molecular gas concentration of the nitrogen is lower than the lower limit of the preset concentration range, starting a circulating pump to suck the mixed gas in the closed warehouse to the carbon molecular sieve pressure swing adsorption tower for adsorption and nitrogen production again until the N2 molecular gas concentration of the output nitrogen meets the preset concentration range. Aiming at the problem that the nitrogen concentration in nitrogen-filled grain storage is difficult to accurately control in the prior art, accurate control of the nitrogen concentration and yield is realized.

The invention discloses a hydrogen low-temperature precooling device and method with oxygen liquefaction, relates to the technical field of low-temperature refrigeration and hydrogen energy liquefaction, and is particularly suitable for cooperative utilization of a hydrogen-oxygen co-production system in green hydrogen production. The device comprises a hydrogen pre-cooling cold box, a liquid oxygen cold box, a mixed refrigerant compression and heat exchange system, a nitrogen circulating refrigeration system and a trace oxygen analyzer arranged in a nitrogen loop. The raw material hydrogen is subjected to purification, precooling, adsorption and ortho-parahydrogen conversion treatment to obtain liquefiable precooled hydrogen; a liquid oxygen product is output after raw material oxygen is purified and liquefied through heat exchange. According to the device, cryogenic heat exchange is achieved through two-stage circulation of mixed refrigerants and nitrogen, a multi-temperature-zone segmented heat exchange network is constructed through multiple separation tanks and a throttling path, and the refrigeration efficiency and the heat recovery capacity are both considered. And liquid oxygen cooling can be dynamically regulated and controlled through a temperature-regulating nitrogen path to adapt to various working conditions of the electrolytic cell. The device is compact in structure, high in safety, excellent in energy efficiency and suitable for the hydrogen-oxygen synergistic liquefaction treatment scene in a water electrolysis hydrogen production device.

The utility model discloses an intrinsic safety power supply circuit and a fuel electrochemical oxygen analyzer. The intrinsic safety power supply circuit comprises a first MOS tube, a first capacitor, a second capacitor, a first resistor, a first Schottky diode, a first Zener diode and a second Zener diode, the power supply module of the fuel electrochemical oxygen analyzer comprises the intrinsic safety power supply circuit and further comprises a sensor module, an AD conversion module, a key module, a single chip microcomputer module, an analog output module and a display driving module which are connected with the power supply module, and the single chip microcomputer module is connected with the AD conversion module, the key module, the analog output module and the display driving module. The sensor module is connected with the AD conversion module, and the analog output module is connected with external equipment; the fuel electrochemical oxygen analyzer adopts the intrinsically safe power supply circuit to limit the working current and voltage in the circuit so as to control the power consumption of the whole machine, so that explosion prevention is realized, and the fuel electrochemical oxygen analyzer can measure the oxygen concentration in a flammable and explosive environment.

The utility model discloses an oxygen content monitoring system suitable for battery cell treatment. The oxygen content monitoring system is arranged in a conveying channel of a lithium battery recycling line. Comprising a nitrogen device, a sampling probe device, a heating type sampling tube, a separation device and a laser oxygen analyzer, the sampling probe device is communicated with a conveying channel of a lithium battery recovery line, a blowback channel is arranged between the nitrogen device and the sampling probe device, and the nitrogen device and the sampling probe device are communicated through the blowback channel; the separation device comprises a cooler, a water passing device and a dehumidifier which are communicated in sequence, and the dehumidifier is further communicated with the laser oxygen analyzer; the nitrogen device conveys nitrogen to the sampling probe device through a back flushing channel, the sampling probe device samples gas through a conveying channel of a lithium battery recycling line, the gas sequentially passes through the sampling probe device, the heating type sampling pipe and the separation device and then enters the laser oxygen analyzer, and the gas is treated and monitored through the laser oxygen analyzer.

The utility model relates to the field of analyzer verification, and discloses a trace oxygen analyzer verification device which comprises an analyzer body, a display screen fixedly connected to the surface of the analyzer body, a connecting box fixed to the top of the analyzer body, and an air outlet end fixed to the top of the analyzer body. An air exhaust mechanism for exhausting air from the connecting box is arranged at the top of the analyzer body, an oxygen sensor is fixed at the top in the connecting box, an air inlet end is fixed on the outer side wall of the analyzer body, and a second connecting pipe is arranged at one end of the air inlet end. The inside of the connecting box is subjected to air extraction treatment through the air extraction mechanism, and part of air contained in the analyzer body is extracted by matching with the air outlet end, so that the influence of residual air in the analyzer body on the detection result of the oxygen content is avoided, and the practicability of the device is improved; the joint of the air inlet end and the second connecting pipe is sealed twice, so that external air is prevented from entering the analyzer body, and the accuracy of a detection result is improved.

The invention provides a wet desulphurization oxidation air adjusting system and method with dual-mode verification feedback. A slurry storage tank is connected with a reactor through a sampling unit; the liquid storage bottle is filled with an iodine standard solution and a sodium thiosulfate standard solution, and is connected to the reactor through a hose and a precise injection pump; an oxidation-reduction electrode is inserted into the reactor; and the upper computer measures the oxidation-reduction potential of the solution in the reactor through the oxidation-reduction electrode so as to judge the titration end point and the consumption of the consumed titration standard solution, and inverts the concentration of sulfite ions in the desulfurization slurry. The upper computer is also connected with a dissolved oxygen analyzer to detect the concentration of dissolved oxygen in the slurry in the slurry storage tank; and mutual verification with the concentration of sulfite ions is carried out to realize dual-mode feedback regulation and control of the oxidation system. According to the invention, the complex nonlinear relationship and time dependence of each measurement parameter can be effectively captured, the accuracy of continuous and automatic measurement of sulfite ions in the desulfurization slurry is realized, and the precision is ensured.

The invention relates to the technical field of automatic control, in particular to a trace oxygen analyzer multi-node cooperative verification system which comprises a disturbance recognition module, a pressure flow correction module, a node scheduling module, a response evaluation module and a performance trend module. And combining the flow change of the mass flow meter to sort time sequence data in a partitioned manner. According to the method, the disturbance performance of each node is summarized in real time by relying on dynamic acquisition of disturbance characteristic factors, node pressure and flow parameters are actively linked, scheduling optimization is executed according to the real-time response performance of the node, collaborative serial number distribution is realized by analyzing node response interval sequence fluctuation, and the scheduling optimization is realized by means of a periodic stability comparison rule. Cooperative degradation trend indexes are extracted and monitored in time, continuous observation of physical disturbance and performance trend of verification nodes is enhanced, and verification accuracy, early warning capability and data stability in a multi-equipment-node scene are improved.

The blast furnace front oxygen enrichment system comprises a low-pressure oxygen pipeline laid between an oxygen station and an iron making plant, the low-pressure oxygen pipeline is connected with a blast furnace blower through an oxygen branch pipe, an air outlet of the blast furnace blower is communicated with an air inlet of a blast furnace, and the oxygen branch pipe is provided with a flame arrester and a second manual stop valve. A security nitrogen pipe is connected between the flame arrester and the second manual cut-off valve, and a stop valve, a nitrogen buffer tank and a nitrogen quick cut-off valve are sequentially arranged on the security nitrogen pipe in the airflow direction; the oxygen analyzer monitors the oxygen content in the oxygen branch pipe in real time and transmits a monitored value to the PLC, the PLC judges whether the oxygen enrichment rate of a preset instruction is reached or not, and the flow regulating valve is regulated through the PLC; the system is simple in structure, reasonable in design, convenient to implement, capable of being effectively applied to blast furnace smelting, capable of saving electric energy and production cost, good in using effect and convenient to popularize and use.

The utility model discloses a device for detecting oxygen content in a kiln body of a light-burned magnesia rotary kiln. The device comprises an oxygen analyzer, wherein the oxygen analyzer consists of a detection unit (oxygen probe) and a control unit (transmitter). Wherein the detection unit is arranged at the end part of the rotary kiln body, and the detector is composed of a sensing probe, a protection tube, a junction box, a standard gas port, a flange and other main components. The whole device is of a totally-closed structure, so that the sealing performance of the whole device is improved, and the service life is prolonged. The control unit is a terminal for a user to operate integrated functions and comprises an operation panel, a display interface and a current output port. The utility model discloses a device for detecting oxygen content in a light-burned magnesia rotary kiln body, relates to the technical field of rotary kiln oxygen content detection equipment, and aims to control the rotating speed of an air blower according to the oxygen content so as to achieve the purpose of controllable oxygen content. Therefore, energy is saved, and electric energy of enterprises can be saved.

The invention belongs to the technical field of coal heat treatment, and particularly relates to a coal pyrolysis system. Heating pipes and raw gas collecting pipes are spirally and alternately arranged on the outer wall of a pyrolysis furnace; the pyrolyzing furnace sequentially comprises a preheating section, a pyrolyzing section and a cooling section from top to bottom; the heating pipe is provided with an air inlet, a coal gas inlet and a flue gas outlet, the air inlet is located at the bottom of the cooling section, the coal gas inlet is located at the bottom of the pyrolysis section, the flue gas outlet is located at the top end of the preheating section, the flue gas outlet is provided with an oxygen analyzer, and the oxygen analyzer is used for regulating and controlling the introduction amount proportion of air and coal gas in the heating pipe. And the oxygen content in the flue gas is always kept at 1.5%-2%. The preheating section, the pyrolysis section and the cooling section are all provided with thermometers, and the thermometers are used for monitoring the temperature of the preheating section, the pyrolysis section and the cooling section; a plurality of through holes are uniformly distributed in the contact part of the raw gas collecting pipe and the pyrolyzing furnace and are used for discharging the raw gas in the pyrolyzing furnace. The coal pyrolysis system can effectively improve the coal pyrolysis efficiency and reduce the heat energy loss.

The utility model belongs to the technical field of analytical instruments, and relates to an on-line automatic calibration system of a laser oxygen analyzer, which is characterized by comprising a laser light source and a light splitting device which is respectively connected with a measuring pipeline and a standard gas calibration device. The measuring pipeline and the standard gas calibration device are respectively connected with corresponding photoelectric conversion devices, and the photoelectric conversion devices and the standard gas calibration device are respectively connected with the man-machine interaction device through the signal processing and control device. According to the utility model, a plurality of standard gas chambers sealed with different standard gases are arranged inside, regular on-line automatic calibration and calibration of the laser oxygen analyzer can be realized through program control selection, the calibration efficiency of the laser oxygen analyzer is improved, and the operation and maintenance cost is reduced.

The utility model discloses an oxygen analyzer structure for a brazing furnace. The oxygen analyzer structure comprises a plurality of collecting pipes which are uniformly distributed around an analyzer body, the mounting plate is fixedly connected with the rear end surface of the analyzer body; the sampling pump is arranged in the analyzer body and fixedly connected with the analyzer body, and one end of the collecting pipe penetrates through the analyzer body and then is fixedly connected with the sampling pump; the filter is arranged in the collecting tube and is fixedly connected with the collecting tube; the purging pipe is arranged on the collecting pipe and on one side of the filter, the purging pipe is communicated with the interior of the collecting pipe, and the purging pipe is fixedly connected with the collecting pipe; the outlet pipe is arranged on the collecting pipe and on the other side of the filter, a communicating port of the outlet pipe is parallel to the purging port, and the outlet pipe is fixedly connected with the collecting pipe; the contactor is arranged in the collecting tube, is fixedly connected with the collecting tube, and is connected with the analyzer body. The filter has the beneficial effects that impurities can be conveniently filtered, and the filter can be better cleaned.

The invention belongs to the technical field of silicon steel sheet annealing test furnaces, belongs to environment-friendly manufacturing planning of ultrahigh-grade oriented silicon steel, and particularly discloses a silicon steel sheet annealing test furnace and a process method thereof. The silicon steel sheet annealing test furnace comprises an inlet section, a heating section, a connecting section and an outlet section, and the inlet section, the heating section, the connecting section and the outlet section form a furnace body structure; the furnace body structure is fixedly installed on a floor in a workshop through two H-shaped steel, the furnace body structure is provided with three cooling air discharging pipes, and the cooling air discharging pipes are outwards led out of the workshop for discharging. According to the silicon steel sheet annealing test furnace and the process method thereof, the three independent heating sections I, II and III and the three independent connecting sections I, II and III are arranged, and are matched with the independent online oxygen analyzer, the sampling port and the atmosphere supply system; and the requirements of multiple scenes such as an intermediate annealing scene, a non-oriented silicon steel finished product annealing scene and oriented silicon steel high-temperature annealing can be met.

The invention relates to the field of industrial wastewater treatment, in particular to an aeration method of an aerobic tank in industrial wastewater treatment. The air filter is additionally arranged in front of an air inlet pipeline of the frequency conversion fan, impurities such as oil drops and dust in the air filter are removed, the filtering and purifying effects are achieved, the gas pipeline mixer is additionally arranged, the oxygen pipeline is additionally arranged on the gas pipeline mixer, and the purpose of achieving the oxygen content of the aeration system through valve adjustment is achieved; and a dissolved oxygen tester is arranged at an inlet and an outlet of the aerobic tank and is connected with a control system. The air filter is additionally arranged to remove flammable and explosive media, the oxygen content is monitored on line and automatically controlled, safety and reliability are achieved, stable operation of the system is guaranteed, the oxygen pipeline is additionally arranged on the newly-arranged gas pipeline mixer, air and oxygen are fully mixed, the oxygen utilization efficiency is improved, and the oxygen utilization rate is increased while the oxygen requirement of biochemical reaction is met. The energy consumption of the fan is reduced, and the operation cost is saved.

The application provides a high-temperature pressure swing adsorption pure oxygen production equipment, which comprises a filter, an inlet of the filter is connected with an air pipeline, an outlet of the filter is connected with an inlet of a blower, an outlet of the blower is connected with an inlet of an air buffer tank, the blower is connected with a frequency converter, an outlet of the air buffer tank is connected with a first inlet of an adsorption tower, a second inlet of the adsorption tower is connected with an outlet of an oxygen back flushing tank, an outlet of the adsorption tower is connected with an inlet of a vacuum pump, an inlet of the oxygen back flushing tank is connected with an outlet of an oxygen buffer tank, the oxygen buffer tank is connected with an oxygen analyzer or a chromatograph and an oxygen flow meter, an outlet of the oxygen buffer tank is connected with an air outlet pipeline, and an outlet of the vacuum pump is connected with the air outlet pipeline. The application uses the principle of pressure swing adsorption, proposes a novel pressure swing adsorption process and equipment, breaks through the limitation of product oxygen purity, and obtains oxygen with a purity of ≥99.5%, thereby expanding a new application field of the pressure swing adsorption oxygen production process.

The utility model belongs to the technical field of dosing devices, and particularly relates to an automatic preparing and dosing system for a sodium erythorbate deoxidant. Comprising a sodium erythorbate storage tank, a preparation tank, a dosing pump, a deaerator and a water feeding pump which are connected in sequence, a top outlet of the sodium erythorbate storage tank is connected with a pressure relief pipeline, the pressure relief pipeline is provided with a back flushing type filter, a bottom outlet of the sodium erythorbate storage tank is connected with an electric rotary feeding valve and a weighing sensor, and the weighing sensor is connected with the sodium erythorbate storage tank. The preparation tank is connected with a desalted water pipeline; an online dissolved oxygen analyzer is arranged at an outlet of the deaerator; an outlet of the nitrogen pipeline is respectively connected with inlet pipelines of the back flushing type filter, the sodium erythorbate storage tank and the preparation tank through pipelines; a control system is further included. And through precise control, the deoxygenation requirement is met. On-line monitoring and automatic adjustment are combined, the dissolved oxygen index is stabilized within the preset range, fluctuation caused by manual adjustment is effectively avoided, the running stability of a downstream boiler is remarkably improved, and meanwhile the working efficiency is improved.

The utility model belongs to the technical field of corn processing, and discloses a fermented corn tabletting zymophyte pool which comprises a mounting frame and a fermentation tank, a top plate is mounted at the top end of the fermentation tank, a baffle is mounted in the fermentation tank in a sliding manner, an oxygen analyzer is fixedly mounted on the back of the fermentation tank, and the oxygen analyzer is connected with the mounting frame. A gas inlet is fixedly communicated with one side, positioned on the oxygen analyzer, of the back of the fermentation tank, a gas outlet is fixedly communicated with the other side, positioned on the oxygen analyzer, of the back of the fermentation tank, and valves are mounted on the outer sides of the gas inlet and the gas outlet; according to the present invention, the inert gas is filled into the fermentation tank along the gas inlet so as to discharge the excess air in the fermentation tank, such that the direct contact between the microorganisms in the fermentation tank and the air is avoided, the fermentation process is ensured to be performed in the stable and controllable environment, and the fermentation efficiency and the product quality of the corn tabletting are improved.

The invention discloses an organic waste gas solvent recovery and dehydration device and a dehydration method, and belongs to the technical field of organic waste gas treatment.The organic waste gas solvent recovery and dehydration device comprises two collaborative dehydration tanks, a rough solvent tank, a phase splitting tank, a wastewater buffer tank, a two-stage condenser, a hot oil heat exchanger, a regeneration fan, a matched oxygen analyzer, a pressure gauge, a thermometer and a liquidometer, and the components are communicated through pipelines provided with stop valves; the two-stage condenser is respectively connected with a cooling water source and a freezing water source to form a circulation loop; and the hot oil heat exchanger is connected with a heat-conducting oil circulation system. According to the method, continuous operation is achieved through two-tank inert gas replacement, raw material conveying adsorption, material backflow switching, residual material recovery, safety detection, desorption, product separation and cooling reset. The core technical problems that the dehydration process is interrupted, the safety and stability are poor, the dehydration efficiency and the solvent recovery rate are low, and the existing organic waste gas solvent recovery dehydration device is difficult to adapt to industrial continuous production in the printing and packaging industry due to the fact that adsorption and regeneration processes cannot be synchronously carried out are solved.

1. The name of the product of this design: Graphical user interface for parameter setting of oxidation oxygen analyzer. 2. Purpose of the product of this design: an analytical instrument used to display the operating status information and setting information of the oxidation oxygen. 3. The design highlights of this design product are: the overall shape of the product, the design pattern, the combination of shape and pattern, and the graphic interface content and change diagram. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5.Purpose of the graphical user interface: used to display the operating status information and setting information of the oxidation oxygen analyzer. 6. Description of the changing states of the graphical user interface: Interface change state diagram 1 is the interface entered after triggering the "SET button" in the main view, interface change state diagram 2 is the interface entered after continuing to trigger the "SET button" in the main view, and interface change state diagram 3 is the interface entered by selecting the oxygen calibration setting tab in interface change state diagram 2 and triggering the "SET button" in the main view.

This invention provides a portable oxygen analyzer for detecting carbon dioxide concentration and its usage method, relating to the field of oxygen analyzer technology. The portable oxygen analyzer includes a middle frame, a rear cover fixedly mounted on one side of the middle frame, a control board fixedly mounted in the middle of the rear cover surface, an oxygen sensor cover fixedly mounted on the rear cover surface, and an oxygen sensor fixedly mounted inside the oxygen sensor cover. The control board includes a power management module connected to a multi-power supply module and a charging management module, and is also connected to a main control processing module. By integrating dual-parameter detection of oxygen and carbon dioxide, environmental temperature and pressure compensation, Bluetooth and serial communication linkage control, and multi-power supply functions, real-time monitoring and closed-loop regulation of air quality in oxygen-enriched spaces are achieved, effectively solving the problems of traditional oxygen analyzers having limited functionality, inability to network linkage, and limited power supply methods.

The invention relates to a pulse buffer tank non-condensable gas constant-current sampling device in the technical field of wet oxidation decarburization and sulfur removal, which comprises a gas delivery pipe, the gas inlet end of the gas delivery pipe is communicated with an exhaust port at the top of a pulse buffer tank, and the gas outlet end of the gas delivery pipe is communicated with a diameter-expanded hollow pipe; the cooling and washing system is arranged on the gas conveying pipe; the steam-water separation system is arranged on the gas conveying pipe; the air inlet end of the traction pipe penetrates through the side surface of the diameter-expanding and oppositely-arranged pipe and is communicated with the interior of the diameter-expanding and oppositely-arranged pipe, and the air outlet end of the traction pipe is connected with the sample input ends of the hydrogen analyzer and the oxygen analyzer; a suction pump is arranged on the traction pipe, and is used for providing negative pressure to suck the non-condensable gas sample gas in the diameter-expanding paired pipe into the hydrogen analyzer and the oxygen analyzer through the traction pipe; and the refrigeration and dehumidification system is arranged on the traction pipe. The problems that when non-condensable gas in a dissolution pulse buffer tank is sampled, the sampling stability is poor due to pulse pressure, and the detection precision is affected are solved.

The utility model discloses a high-temperature desorption oven for producing a solid lithium battery, which comprises oven equipment, a plurality of drying chambers arranged in the oven equipment, gas guide boxes arranged in the plurality of drying chambers, element desorption boxes arranged in the gas guide boxes, nitrogen introduction pipes arranged on the element desorption boxes and gas outlets arranged on the element desorption boxes. A temperature sensor is arranged at the bottom of the element analysis box; an operation interface, a flow switch and an oxygen analyzer are arranged at one end of the oven equipment; the temperature control device comprises a fan, a heater and a cooling pipe, the heater is located at the rear end of the fan, and the cooling pipe is located at the front end of the fan. According to the utility model, the oven equipment is internally provided with the plurality of mutually insulated drying chambers, the gas guide boxes are arranged in the drying chambers, and the element analysis box is placed in the gas guide boxes, so that not only is the temperature diffusion area reduced, but also the temperature is uniformly transmitted to the element analysis box by utilizing the plurality of ventilation holes arranged in the matrix on the gas guide boxes; and the temperature uniformity is improved.

The application discloses a device and method for detecting glove leakage rate of glove box by using air bag, which adopts air bag assembly to realize rapid oxygen removal through volume expansion and contraction, provides low oxygen environment, so as to accurately detect air permeability of gloves. The device comprises a cavity, one end of the cavity is provided with a glove mounting part and is sealingly connected with a glove to be detected. Through the cooperative operation of a vacuum pump and a nitrogen source, the oxygen concentration change in the cavity is accurately monitored by using a differential pressure gauge and an oxygen analyzer, so that the influence of background leakage is effectively eliminated, and accurate detection data is provided. The device has simple and convenient design structure, contains different size ring grooves to adapt to various glove specifications, and meets the detection requirements of gloves with different materials and diameters. The device does not need a complex adsorption circulation system or a high vacuum degree equipment, and only relies on the air bag assembly and the vacuum pump to quickly reduce the oxygen concentration to ppm level, so as to realize an integrated and standardized detection process, and reduce the operation and maintenance cost.

The utility model relates to an alkaline water electrolytic bath hydrogen production system capable of rapidly detecting oxygen in hydrogen and hydrogen in oxygen, which comprises an electrolytic bath, an alkaline liquor cooler, an alkaline liquor circulating pump, a hydrogen separator, a hydrogen washer, an oxygen separator, an oxygen washer, a hydrogen cooler and an oxygen cooler, an oxygen side outlet of the electrolytic cell is connected with the oxygen preseparator, the oxygen-in-hydrogen analyzer is connected with a gas phase region of the hydrogen preseparator through a sampling pipeline, and the hydrogen-in-oxygen analyzer is connected with a gas phase region of the oxygen preseparator through a sampling pipeline. According to the utility model, the hydrogen sampling point of the oxygen-in-hydrogen analyzer is arranged in the gas phase region of the hydrogen preseparator, and the oxygen sampling point of the oxygen-in-hydrogen analyzer is arranged in the gas phase region of the oxygen preseparator, so that the data of the oxygen-in-hydrogen analyzer and the data of the oxygen-in-hydrogen analyzer can reflect the current actual operation data of the electrolytic cell; the hysteresis of detection data and actual operation data is reduced, and the operation safety of the electrolytic cell is improved.

The utility model provides an oxygen analyzer protection device and wafer annealing equipment, and relates to the technical field of semiconductor preparation. The oxygen analyzer protection device is applied to an oxygen analyzer, and the oxygen analyzer is connected with a wafer annealing cavity through a gas sampling pipe. The oxygen analyzer protection device comprises a nitrogen pipeline and a valve mechanism. The valve mechanism comprises a first valve and a second valve, the first valve is arranged on the gas sampling pipe, and the second valve is arranged on the nitrogen pipeline. The nitrogen pipeline is communicated with the gas sampling pipe, and the pipeline joint of the nitrogen pipeline and the gas sampling pipe is located between the first valve and the oxygen analyzer. According to the utility model, the oxygen analyzer can be effectively protected, and the service life of the oxygen analyzer can be prolonged.

The present invention discloses a low-temperature plasma disproportionation reaction unit, which includes a U-shaped tube, and a double dielectric rod-cylinder type barrier discharge structure arranged on its straight pipe section, and a seal combining a double ceramic sheet and an organic insulating medium is provided at the top. A disproportionation reactor based on the reaction unit is also proposed, which mainly includes a filter, a flow controller, a first oxygen analyzer, a first buffer tank, a second oxygen analyzer, a low-temperature plasma disproportionation reaction unit, and a second buffer tank that are sequentially connected in series and located in a heat preservation layer. Finally, a disproportionation reaction method based on the disproportionation reactor is also proposed, which mainly includes purification, flow control, oxygen analysis to eliminate hydrogen explosion, low-temperature plasma disproportionation reaction, and gas component analysis to evaluate the reaction efficiency. The disproportionation reaction unit, reactor, and reaction method can achieve low-temperature disproportionation reaction, without the problems of noble metal catalyst shedding and tritium-containing waste generation, and at the same time have high conversion efficiency, fast reaction speed, and low operating cost.

The utility model discloses a front pretreatment device for a magnetic oxygen analyzer, and belongs to the technical field of gas pretreatment devices. The preposed pretreatment device for the magnetic oxygen analyzer comprises a Y-shaped sampler, the bottom of the sampler is provided with a gas inlet, the top of the sampler is provided with a gas outlet, and the side part of the sampler is provided with a nitrogen blowback port; the mounting cylinder is mounted in the air inlet, and a steel wire ball for removing carbon black is mounted in the mounting cylinder; the perforated partition plate is in threaded connection with the air inlet end of the air inlet, and the mounting cylinder is located at the air outlet end of the perforated partition plate; the primary filter is used for filtering the gas discharged by the sampler again and filtering the carbon black and water; through the arrangement of the steel wire ball and the perforated partition plate, the carbon black can be effectively removed, the treatment capacity of pretreatment is reduced, the carbon black can be more efficiently removed, water is not needed for washing, and the influence of oxygen in water on analysis data is completely eradicated.

This invention relates to a low-temperature oxidative roasting pretreatment method and supporting equipment for gold-bearing pyrite. The method includes: raw material preparation; humidification and cooling; low-temperature oxygen-enriched roasting; and roasted sand collection. The supporting equipment includes a batching bin, the bin outlet of which is connected to the feed hopper inlet via an elevator, and the feed hopper outlet connected to the fluidized bed furnace inlet via a conveyor belt. A spraying device is mounted on the conveyor belt. Atomized temperature-regulating and water-replenishing device and a temperature sensor are installed in the upper and middle combustion spaces of the fluidized bed furnace. An online oxygen analyzer is installed on the flue gas duct at the top of the fluidized bed furnace, and is sequentially connected to a waste heat boiler, a cyclone dust collector, an electrostatic precipitator, and an acid production system. The air inlet at the bottom of the fluidized bed furnace is connected to a blower via an air duct. This invention achieves full oxidation of gold-bearing pyrite under low-temperature, oxygen-enriched, and low-gas-velocity conditions, resulting in loose and porous roasted sand and a significantly increased gold and silver exposure rate, providing important technical support for the comprehensive utilization of the valuable components of gold-bearing pyrite.

The invention discloses a glove box for chemical synthesis. The glove box comprises a rack, a box body, a transition bin communicated with the box body, chemical synthesis equipment, a filter, a water oxygen analyzer, a gas purification system and a vacuum system, wherein the water oxygen analyzer, the gas purification system and the vacuum system are located outside the box body. A visual panel and operation gloves are arranged on the side wall of the box body; the chemical synthesis equipment and the filter are positioned in the box body; an inlet of the gas purification system is communicated with the filter, an outlet of the gas purification system is communicated with the box body, and the gas purification system comprises an oxygen removal unit, a water removal unit, an impurity removal unit and a circulating fan; the vacuum system and the water oxygen analyzer are respectively communicated with the box body, the vacuum system is configured to be used for vacuumizing the box body, and the water oxygen analyzer is configured to be used for analyzing the water oxygen content in the box body. According to the glove box for chemical synthesis, water and oxygen analysis and control are rapid and convenient, chemical synthesis experiments under various water-free and oxygen-free conditions can be carried out, and the high-quality requirement of new energy materials is met.

The utility model discloses a continuous deoxidation monitoring device for brewing water by a membrane method. The continuous deoxidation monitoring device comprises a degassing membrane component (1), the outlet end of the water inlet pipeline (2) is connected with the water inlet end of the degassing membrane component (1); the inlet end of the water outlet pipeline (3) is connected with the water outlet end of the degassing membrane assembly (1), and the water outlet pipeline (3) is provided with a dissolved oxygen tester (31); the heat exchanger (4) is provided with a first heat exchange channel (41) and a second heat exchange channel (42) which can exchange heat with each other; at least part of the refrigerant supply pipeline (5) passes through the first heat exchange channel (41); at least part of the water outlet pipeline (3) passes through the second heat exchange channel (42), and the dissolved oxygen tester (31) is located on the downstream of the second heat exchange channel (42). Compared with the prior art, the utility model can avoid the problem that the quality of beer is influenced by the increase of dissolved oxygen caused by temperature reduction in the subsequent use process of brewing water.