CN111948270A - Dangerous gas alarm used under high-temperature severe working condition - Google Patents
Dangerous gas alarm used under high-temperature severe working condition Download PDFInfo
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- 229910002439 Ce0.8Sm0.2O1.9 Inorganic materials 0.000 claims description 8
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4075—Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4073—Composition or fabrication of the solid electrolyte
- G01N27/4074—Composition or fabrication of the solid electrolyte for detection of gases other than oxygen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1231—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte with both reactants being gaseous or vaporised
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention provides a dangerous gas alarm used under high-temperature severe working conditions, and relates to the technical field of fire-fighting alarm equipment. A dangerous gas alarm used under high-temperature severe working conditions comprises a processor and a reactor, wherein the reactor comprises an anode, a cathode and electrolyte, and the anode and the cathode are respectively contacted with the electrolyte; the anode and the cathode are respectively electrically connected with the processor. The invention has stronger severe environment tolerance and can detect the content of high-risk reducing gas under the severe working conditions of high temperature and high pressure.
Description
Technical Field
The invention relates to the technical field of fire-fighting alarm equipment, in particular to a dangerous gas alarm used under high-temperature severe working conditions.
Background
At present, high-risk events of chemical plants occur frequently, and reaction conditions need to be carried out under severe working conditions such as high temperature and high pressure in the production process of chemical enterprises. Often accompanied by uncontrolled side reactions with the production of highly dangerous reducing gases (e.g., hydrogen, methane, etc.). The high-risk reducing gases accumulate certain concentration under the conditions of high temperature and high pressure, have great potential safety hazard, can explode when exceeding the explosion limit, and generate serious safety accidents. Therefore, the detection and alarm of the high-risk reducing gas under severe environments such as high temperature and high pressure are very important.
The existing reductive gas detector is mainly used for detecting the concentration of high-risk reductive gas, the reductive gas detector is generally used for detecting gas based on the principle of a vacuum tube, the using condition is limited, the reductive gas concentration is difficult to detect in the high-temperature and high-pressure environment of more than 500 ℃, the tolerance of long-term work is poor, the detection precision is difficult to guarantee, and the fire alarm requirement is difficult to meet. The reducing gas alarm under the severe working condition of 500-1000 ℃ is in a blank state.
Disclosure of Invention
The invention aims to provide a dangerous gas alarm used under high-temperature severe working conditions, which has strong severe environment tolerance and can detect the content of high-risk reducing gas under the severe working conditions of high temperature and high pressure.
The embodiment of the invention is realized by the following steps:
the embodiment of the application provides a dangerous gas alarm used under high-temperature severe working conditions, which comprises a processor and a reactor, wherein the reactor comprises an anode, a cathode and electrolyte, and the anode and the cathode are respectively contacted with the electrolyte; the anode and the cathode are electrically connected to the processor, respectively.
When the reactor is actually used, the reactor is arranged on the side wall of the chemical reactor, an opening can be formed in the side wall of the chemical reactor, the anode is arranged in the opening, the anode is communicated with gas in the chemical reactor, and the cathode is directly contacted with air; thus O in air2In contact with the cathode, CH inside the chemical reactor4Or H2In contact with the anode, under the catalysis of high temperature in the chemical reactor, O2A reduction reaction takes place at the cathode, CH4Or H2Oxidation reaction occurs at the anode, thus generating electromotive force, CH with different concentration4Or H2The electromotive forces generated in the reaction are different, so that the CH at the moment can be judged according to the magnitude of the electromotive force received by the processor4Or H2If the concentration exceeds the threshold value, staff can be prompted to alarm for fire fighting. The specific chemical reaction is as follows: CH (CH)4+2O2＝2H2O+CO2Or 2H2+O2＝2H2O。
Because the dangerous gas alarm used under the high-temperature severe working condition detects the content of the high-risk reducing gas under the severe working condition of high temperature and high pressure by the solid oxide fuel cell principle, the solid oxide fuel cell has stronger severe environment tolerance and can bear the severe working condition of 500-1000 ℃.
Further, in some embodiments of the present invention, the reactor further includes a temperature detecting module for detecting the reactor temperature, and the temperature detecting module is electrically connected to the processor.
Further, in some embodiments of the present invention, the temperature detection module includes a thermocouple sensor, and the thermocouple sensor is connected to the reactor.
Further, in some embodiments of the present invention, the mobile terminal further includes an alarm module, and the alarm module is electrically connected to the processor.
Further, in some embodiments of the present invention, the reactor further includes a sealed casing, the reactor is disposed in the sealed casing, and a sidewall of the sealed casing is provided with at least one first through hole for communicating the anode with the outside and at least one second through hole for communicating the cathode with the outside.
Further, in some embodiments of the present invention, Sr is used as the material of the sealing shell0.7Y0.3Ti0.6B0.4O3Wherein B is one of Fe, Co, Ni, Cu and Zn.
Further, in some embodiments of the present invention, a voltage sensor is disposed between the processor and the reactor, the voltage sensor is electrically connected to the processor, and the anode and the cathode are electrically connected to the voltage sensor, respectively.
Further, in some embodiments of the inventionThe anode material adopts NiO-yttria stabilized zirconia and Ni0-Ce0.8Sm0.2O1.9、NiO-BaZr0.7Pr0.1Y0.2O3-、NiO-BaZr0.1Ce0.7Y0.2O3-And SrTiO3One of (1) and (b).
Further, in some embodiments of the present invention, the cathode material is (La)0.75Sr0.25)0.95MnO3And La0.6Sr0.4Co0.2Fe0.8O3-One kind of (1).
Further, in some embodiments of the present invention, the electrolyte material is yttria-stabilized zirconia, Ce0.8Sm0.2O1.9、BaZr0.7Pr0.1Y0.2O3-And BaZr0.1Ce0.7Y0.2O3-One kind of (1).
Compared with the prior art, the embodiment of the invention at least has the following advantages or beneficial effects:
the embodiment of the invention provides a dangerous gas alarm used under high-temperature severe working conditions, which comprises a processor and a reactor, wherein the reactor comprises an anode, a cathode and electrolyte, and the anode and the cathode are respectively contacted with the electrolyte; the anode and the cathode are electrically connected to the processor, respectively.
When the reactor is actually used, the reactor is arranged on the side wall of the chemical reactor, an opening can be formed in the side wall of the chemical reactor, the anode is arranged in the opening, the anode is communicated with gas in the chemical reactor, and the cathode is directly contacted with air; thus O in air2In contact with the cathode, CH inside the chemical reactor4Or H2In contact with the anode, under the catalysis of high temperature in the chemical reactor, O2A reduction reaction takes place at the cathode, CH4Or H2Oxidation reaction occurs at the anode, thus generating electromotive force, CH with different concentration4Or H2The electromotive forces generated in the reaction are different, so that the judgment can be carried out according to the magnitude of the electromotive forces received by the processorAt this time CH4Or H2If the concentration exceeds the threshold value, staff can be prompted to alarm for fire fighting.
The specific chemical reaction is as follows:
CH4+2O2＝2H2O+CO2or 2H2+O2＝2H2O
Because the alarm detects the content of the high-risk reducing gas under the severe working conditions of high temperature and high pressure by the solid oxide fuel cell principle, the solid oxide fuel cell has stronger severe environment tolerance and can bear the severe working conditions of 500-1000 ℃.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a reactor installed in a chemical reactor according to an embodiment of the present invention;
fig. 2 is a schematic diagram provided by an embodiment of the present invention.
Icon: 1-an anode; 2-a cathode; 3-an electrolyte; 4-a wire; 5-a chemical reactor; 6-thermocouple sensor; 7-sealing the housing; 8-a first via; 9-second via.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or vertical, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a reactor installed in a chemical reactor 5 according to an embodiment of the present invention; fig. 2 is a schematic diagram provided by an embodiment of the present invention.
The embodiment provides a dangerous gas alarm used under high-temperature severe working conditions, which comprises a processor and a reactor, wherein the reactor comprises an anode 1, a cathode 2 and an electrolyte 3, and the anode 1 and the cathode 2 are respectively contacted with the electrolyte 3; the anode 1 and the cathode 2 are electrically connected to the processor, respectively.
At present, high-risk events of chemical plants occur frequently, and reaction conditions need to be carried out under severe working conditions such as high temperature and high pressure in the production process of chemical enterprises. Often accompanied by uncontrolled side reactions with the production of highly dangerous reducing gases (e.g., hydrogen, methane, etc.). The high-risk reducing gases accumulate certain concentration under the conditions of high temperature and high pressure, have great potential safety hazard, can explode when exceeding the explosion limit, and generate serious safety accidents. Therefore, the detection and alarm of the high-risk reducing gas under severe environments such as high temperature and high pressure are very important.
The existing reductive gas detector is mainly used for detecting the concentration of high-risk reductive gas, the reductive gas detector is generally used for detecting gas based on the principle of a vacuum tube, the using condition is limited, the reductive gas concentration is difficult to detect in the high-temperature and high-pressure environment of more than 500 ℃, the tolerance of long-term work is poor, the detection precision is difficult to guarantee, and the fire alarm requirement is difficult to meet. The reducing gas alarm under the severe working condition of 500-1000 ℃ is in a blank state. Based on this, the inventors have proposed the present invention.
When the reactor is actually used, the reactor is arranged on the side wall of the chemical reactor 5, an opening can be formed in the side wall of the chemical reactor 5, the anode 1 is arranged in the opening, so that the anode 1 is communicated with gas in the chemical reactor 5, and the cathode 2 is directly contacted with air; thus O in air2CH inside the chemical reactor 5 in contact with the cathode 24Or H2Contacting with an anode 1 in a chemical reactor5 high temperature catalysis of the interior, O2A reduction reaction takes place at the cathode 2, CH4Or H2An oxidation reaction occurs at the anode 1, thus generating electromotive force, CH of various concentrations4Or H2The electromotive forces generated in the reaction are different, so that the CH at the moment can be judged according to the magnitude of the electromotive force received by the processor4Or H2If the concentration exceeds the threshold value, staff can be prompted to alarm for fire fighting.
The specific chemical reaction is as follows:
CH4+2O2＝2H2O+CO2or 2H2+O2＝2H2O
Because the alarm detects the content of the high-risk reducing gas under the severe working conditions of high temperature and high pressure by the solid oxide fuel cell principle, the solid oxide fuel cell has stronger severe environment tolerance and can bear the severe working conditions of 500-1000 ℃.
Optionally, the anode 1 and the cathode 2 of the present embodiment are electrically connected to a lead 4, the lead 4 is further electrically connected to the processor, and the material of the lead 4 is selected from materials with high electrical conductivity, high temperature resistance, and corrosion resistance. The processor of this embodiment may be a computer, and the processing operation of the computer software is convenient to determine the CH at that time according to the magnitude of the received electromotive force4Or H2The concentration of (2). The reactor of the embodiment is horizontally or vertically arranged on the side wall of the chemical reactor 5.
It should be noted that the computer is used as the processor, but the invention is not limited thereto, and in other embodiments, the processor may be an integrated circuit chip with signal processing capability. The processor may be a general purpose processor including a central processing unit, a network processor, etc.; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The present invention is not limited to the computer of the present embodiment. For example, the processor can adopt an AT89S51 chip, the AT89S51 is a low-power consumption and high-performance CMOS8 bit microprocessor, a general 8 bit central processing unit and an ISP Flash storage unit are integrated in the chip, and information monitored by the door access monitoring module and the window monitoring module can be timely and effectively processed.
As shown in fig. 1 and 2, in some embodiments of the present invention, the reactor further includes a temperature detection module for detecting the reactor temperature, and the temperature detection module is electrically connected to the processor. Because the temperature has certain influence on the reaction of the reactor, the temperature detection module for detecting the reaction temperature of the reactor is arranged and is electrically connected with the processor, so that the reaction temperature of the reactor can be detected, the temperature signal is transmitted to the processor for analysis, and CH is further added4Or H2The detection accuracy of the concentration size is high.
As shown in fig. 1 and 2, in some embodiments of the present invention, the temperature sensing module includes a thermocouple sensor 6, and the thermocouple sensor 6 is connected to the reactor. Thermocouple sensor 6 is the most commonly used contact temperature measurement device in the industry. The thermocouple sensor 6 has the characteristics of stable performance, large temperature measuring range, capability of remotely transmitting signals and the like, and is simple in structure and convenient to use. The thermocouple sensor 6 can directly convert thermal energy into an electrical signal and output a direct voltage signal, so that display, recording and transmission are easy.
It should be noted that the thermocouple sensor 6 used in the temperature detection module is only a preferred embodiment of the present embodiment, and the present invention is not limited thereto, and in other embodiments, the temperature detection module may also use a thermistor sensor, which is made of a semiconductor material and mostly has a negative temperature coefficient, i.e., the resistance value decreases with the increase of the temperature. Temperature changes cause large resistance changes, so that the thermistor is the most sensitive temperature sensor, has very small volume and responds quickly to temperature changes.
In some embodiments of the present invention, as shown in fig. 1 and 2, the processor further comprises an alarm module electrically connected to the processor. The invention sets an alarm module, the alarm module and the alarm moduleThe processors are electrically connected, thus in CH4Or H2When the concentration exceeds the threshold value, the processor can send an alarm signal to the alarm module, and the alarm module can be used for alarming to prompt staff. Optionally, the alarm module of this embodiment may include a light alarm or an audio alarm, etc.
Optionally, the light alarm of this embodiment may adopt an LED lamp, which has a fast response speed, and the LED lamp will be turned on immediately when the power is turned on, which is beneficial to the alarm. And the energy consumption of the LED lamp is one tenth of that of an incandescent lamp and one fourth of that of an energy-saving lamp, so that the energy-saving and environment-friendly LED lamp is beneficial to the requirements of energy conservation and environmental protection at present. Optionally, the sound alarm of the embodiment may adopt a loudspeaker, and an alarm is given through the loudspeaker, so that a worker can be notified remotely.
As shown in fig. 1 and 2, in some embodiments of the present invention, the reactor further comprises a sealed housing 7, the reactor is disposed in the sealed housing 7, and a sidewall of the sealed housing 7 is provided with at least one first through hole 8 for communicating the anode 1 with the outside and at least one second through hole 9 for communicating the cathode 2 with the outside.
According to the invention, the sealed shell 7 is arranged, the reactor is arranged in the sealed shell 7, so that the anode 1, the cathode 2 and the electrolyte 3 of the reactor are sealed, external gas is prevented from entering the reactor to interfere with chemical reaction, the chemical reaction in the reactor is ensured to be normally carried out, and CH is further added4Or H2The detection accuracy of the concentration size is high.
According to the invention, the side wall of the sealed shell 7 is provided with at least one first through hole 8 for communicating the anode 1 with the outside and at least one second through hole 9 for communicating the cathode 2 with the outside, so that outside oxygen can enter the sealed shell 7 through the second through hole 9 to be contacted with the cathode 2, and high-risk reducing gas in the chemical reactor 5 is contacted with the anode 1 through the first through hole 8. Optionally, the sidewall of the chemical reactor 5 of this embodiment is provided with a third through hole, and the third through hole is communicated with the first through hole 8, so that the high-risk reducing gas in the chemical reactor 5 flows into the first through hole 8 from the third through hole and then contacts with the anode 1.
In some embodiments of the present invention, as shown in fig. 1 and 2, Sr is used as the material of the sealing case 70.7Y0.3Ti0.6B0.4O3Wherein B is one of Fe, Co, Ni, Cu and Zn.
As shown in fig. 1 and 2, in some embodiments of the present invention, a voltage sensor is disposed between the processor and the reactor, the voltage sensor is electrically connected to the processor, and the anode 1 and the cathode 2 are electrically connected to the voltage sensor, respectively.
A voltage sensor is a sensor that senses the measured voltage and converts it into a usable output signal. In various automatic detection and control systems, it is often necessary to track and collect high-speed alternating and direct voltage signals and perform spectrum analysis on relatively complex voltage waveforms. Such signals may be strong currents such as high voltages and large currents, weak currents with poor load capacity, or signals with small amplitude. In these cases, it is necessary to acquire voltage signals that cannot be directly measured or that do not match, using suitable voltage sensors, so as to obtain standardized, electrically isolated voltage signals.
According to the invention, the voltage sensor is arranged, the voltage sensor is electrically connected with the processor, the anode 1 and the cathode 2 are respectively electrically connected with the voltage sensor, so that the change of electromotive force of the anode 1 and the cathode 2 can be received by the voltage sensor and then transmitted to the processor through the voltage sensor, and the accuracy of electromotive force judgment is improved.
As shown in FIGS. 1 and 2, in some embodiments of the present invention, the anode 1 material is NiO-yttria stabilized zirconia, Ni0-Ce0.8Sm0.2O1.9、NiO-BaZr0.7Pr0.1Y0.2O3-、NiO-BaZr0.1Ce0.7Y0.2O3-And SrTiO3One of (1) and (b).
Yttria-stabilized zirconia is a ceramic material that is stabilized at room temperature by the addition of yttria to alter the phase transition temperature range of zirconiaThe cubic crystal and the tetragonal crystal can resist high temperature and have stable performance. Ce0.8Sm0.2O1.9Is a medium-temperature oxygen anion conducting substance, and has higher ionic conductivity at lower temperature. Strontium titanate (SrTiO)3) Is one of the most widely used excellent high-temperature superconducting single crystal substrates at present. It has good lattice matching with YBaCuO and other high-temperature superconducting materials, has no twin crystal structure and excellent physical and mechanical properties. SrTiO3Is also the preferred single crystal material for high temperature superconductive junction technology (using a bicrystal substrate or a step-shaped substrate) and substrate stepping (beveling and heat treatment at a specific angle). NiO-BaZr0.7Pr0.1Y0.2O3-And NiO-BaZr0.1Ce0.7Y0.2O3-The material is a material commonly used for the anode 1 reaction of a chemical battery, has good chemical stability and high temperature resistance, and is suitable for working under high temperature and high pressure.
As shown in FIGS. 1 and 2, in some embodiments of the present invention, the cathode 2 is made of (La) as the material0.75Sr0.25)0.95MnO3And La0.6Sr0.4Co0.2Fe0.8O3-One kind of (1). (La)0.75Sr0.25)0.95MnO3And La0.6Sr0.4Co0.2Fe0.8O3-The material has the advantages of higher conductivity, good oxidation-reduction reaction activity and the like, is a commonly used material for fixing the cathode 2 of the oxide battery, has good chemical stability and high temperature resistance, and is suitable for working under high temperature and high pressure.
In some embodiments of the invention, as shown in fig. 1 and 2, the electrolyte 3 material is yttria-stabilized zirconia, Ce0.8Sm0.2O1.9、BaZr0.7Pr0.1Y0.2O3-And BaZr0.1Ce0.7Y0.2O3-One kind of (1).
Yttria-stabilized zirconia is a ceramic material, and cubic crystals and tetragonal crystals which are stable at room temperature are generated by changing the phase transition temperature range of zirconia by adding yttria, and the ceramic material is resistant to high temperature and stable in performance. Ce0.8Sm0.2O1.9The electrolyte is a medium-temperature oxygen anion conducting electrolyte and has higher ionic conductivity at lower temperature.
In summary, an embodiment of the present invention provides a hazardous gas alarm for use in a high-temperature severe operating condition, including a processor and a reactor, where the reactor includes an anode 1, a cathode 2, and an electrolyte 3, and the anode 1 and the cathode 2 are respectively in contact with the electrolyte 3; the anode 1 and the cathode 2 are electrically connected to the processor, respectively.
When the reactor is actually used, the reactor is arranged on the side wall of the chemical reactor 5, an opening can be formed in the side wall of the chemical reactor 5, the anode 1 is arranged in the opening, so that the anode 1 is communicated with gas in the chemical reactor 5, and the cathode 2 is directly contacted with air; thus O in air2CH inside the chemical reactor 5 in contact with the cathode 24Or H2In contact with the anode 1, under the catalysis of high temperature in the chemical reactor 5, O2A reduction reaction takes place at the cathode 2, CH4Or H2An oxidation reaction occurs at the anode 1, thus generating electromotive force, CH of various concentrations4Or H2The electromotive forces generated in the reaction are different, so that the CH at the moment can be judged according to the magnitude of the electromotive force received by the processor4Or H2If the concentration exceeds the threshold value, staff can be prompted to alarm for fire fighting.
The specific chemical reaction is as follows:
CH4+2O2＝2H2O+CO2or 2H2+O2＝2H2O
Because the alarm detects the content of the high-risk reducing gas under the severe working conditions of high temperature and high pressure by the solid oxide fuel cell principle, the solid oxide fuel cell has stronger severe environment tolerance and can bear the severe working conditions of 500-1000 ℃.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a hazardous gas alarm for under the abominable operating mode of high temperature which characterized in that: the system comprises a processor and a reactor, wherein the reactor comprises an anode, a cathode and an electrolyte, and the anode and the cathode are respectively in contact with the electrolyte; the anode and the cathode are respectively electrically connected with the processor.
2. The hazardous gas alarm for high temperature severe conditions of claim 1, wherein: the reactor temperature detection device is characterized by further comprising a temperature detection module for detecting the reactor reaction temperature, wherein the temperature detection module is electrically connected with the processor.
3. The hazardous gas alarm for high temperature severe conditions of claim 2, wherein: the temperature detection module comprises a thermocouple sensor, and the thermocouple sensor is connected with the reactor.
4. The hazardous gas alarm for high temperature severe conditions of claim 1, wherein: the intelligent alarm system also comprises an alarm module, wherein the alarm module is electrically connected with the processor.
5. The hazardous gas alarm for high temperature severe conditions of claim 1, wherein: the reactor is arranged in the sealed shell, and the side wall of the sealed shell is provided with at least one first through hole for communicating the anode with the outside and at least one second through hole for communicating the cathode with the outside.
6. The hazardous gas alarm for high temperature severe conditions of claim 5, wherein: the material of the sealing shell adopts Sr0.7Y0.3Ti0.6B0.4O3Wherein B is one of Fe, Co, Ni, Cu and Zn.
7. The hazardous gas alarm for high temperature severe conditions of claim 1, wherein: and a voltage sensor is arranged between the processor and the reactor, the voltage sensor is electrically connected with the processor, and the anode and the cathode are respectively electrically connected with the voltage sensor.
8. The hazardous gas alarm for use in high temperature severe conditions according to any one of claims 1-7, wherein: the anode material adopts NiO-yttria stabilized zirconia and Ni0-Ce0.8Sm0.2O1.9、NiO-BaZr0.7Pr0.1Y0.2O3-、NiO-BaZr0.1Ce0.7Y0.2O3-And SrTiO3One of (1) and (b).
9. The hazardous gas alarm for use in high temperature severe conditions according to any one of claims 1-7, wherein: the cathode material adopts (La)0.75Sr0.25)0.95MnO3And La0.6Sr0.4Co0.2Fe0.8O3-One kind of (1).
10. The hazardous gas alarm for use in high temperature severe conditions according to any one of claims 1-7, wherein: the electrolyte material adopts yttria-stabilized zirconia and Ce0.8Sm0.2O1.9、BaZr0.7Pr0.1Y0.2O3-And BaZr0.1Ce0.7Y0.2O3-One kind of (1).
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