A device for inhibiting the interference of carbon monoxide on a zirconium oxide analyzer

Abstract

The utility model relates to industrial process analysis instrument technical field especially is related to a device that inhibits carbon monoxide to zirconium oxide analyzer interference. The device includes lengthened probe rod, carbon monoxide pretreatment subassembly and heating assembly. Lengthened probe rod is hollow tubular, and one end is connected with zirconium oxide analyzer probe filter through detachable structure, heating assembly is arranged in the shell wall of lengthened probe rod, carbon monoxide pretreatment subassembly is placed in the hollow cavity of lengthened probe rod, and the import corresponds the sealed communication of probe rod import, outlet and filter, and is filled with copper oxide particle in the inside. When working, heating assembly maintains suitable temperature, and copper oxide particle oxidizes carbon monoxide in flue gas into carbon dioxide, and breaks down its catalytic combustion reaction with analyzer probe, avoids monitoring value to be low. The device does not need to transform analyzer body, adapts mainstream model, reduces the transformation cost, and gas path is smooth, does not influence sampling rate and response speed.

Description

Technical Field

[0001] This utility model relates to the field of industrial process analysis instrument technology, and in particular to a device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer. Background Technology

[0002] In the steel industry production process, monitoring the oxygen content of flue gas from stationary pollution sources (such as sintering machine head / tail, blast furnace hot blast stove, converter gas recovery system, etc.) is a core link in achieving combustion efficiency optimization, energy consumption control and environmental compliance emissions.

[0003] Currently, online monitoring of oxygen content in stationary pollution sources mainly uses zirconia analyzers. Based on the oxygen ion conduction characteristics of zirconia solid electrolyte, the zirconia analyzer calculates oxygen content by measuring the oxygen partial pressure in flue gas, which can more accurately reflect the actual oxygen content level.

[0004] However, under high-temperature operating conditions, carbon monoxide in the flue gas will undergo a catalytic combustion reaction with oxygen on the surface of the zirconia probe of the zirconia analyzer. This reaction consumes the oxygen around the probe, causing the oxygen partial pressure detected by the zirconia probe to be lower than the actual oxygen partial pressure in the flue gas.

[0005] Existing anti-interference measures for zirconia analyzers (such as adding dust filters and optimizing probe heating temperature) can only solve the interference caused by dust blockage and temperature fluctuations, but cannot effectively inhibit the catalytic reaction of carbon monoxide and oxygen. Utility Model Content

[0006] In order to solve the technical problem that carbon monoxide in flue gas can interfere with zirconium oxide analyzers in the prior art, this utility model provides a device to suppress the interference of carbon monoxide on zirconium oxide analyzers.

[0007] Therefore, the present invention provides the following technical solution: A device for suppressing carbon monoxide interference in a zirconia analyzer includes an extended probe, a carbon monoxide pretreatment component, and a heating component. The extended probe is a hollow tubular structure, one end of which is connected to the zirconia analyzer probe filter via a detachable structure. The heating component is disposed on the inner wall of the extended probe. The carbon monoxide pretreatment component is disposed within the hollow cavity of the extended probe, with its inlet end corresponding to the inlet of the extended probe and its outlet end sealed and connected to the gas inlet end of the zirconia analyzer probe filter. The carbon monoxide pretreatment component is filled with copper oxide particles.

[0008] Furthermore, the carbon monoxide pretreatment component includes a quartz glass tube and high-temperature resistant quartz wool; the quartz glass tube is installed inside the extended probe, the high-temperature resistant quartz wool is filled at both ends of the quartz glass tube, and copper oxide particles are filled inside the quartz glass tube and located between the high-temperature resistant quartz wool at both ends.

[0009] Furthermore, the heating component is a heating wire laid on the inner shell of the extended probe.

[0010] Furthermore, the two ends of the quartz glass tube are respectively provided with plugs for fixing it inside the extended probe rod. The plugs are provided with vent holes that connect the zirconia analyzer probe filter and the quartz glass tube. The outer ring of the plug is provided with a rubber ring, which is interference-fitted with the extended probe rod.

[0011] Furthermore, the extended probe is detachably connected to the zirconia analyzer probe filter via a flange.

[0012] Furthermore, the heating temperature of the heating component is 280℃-350℃.

[0013] Advantages and positive effects of this utility model: This device uses copper oxide particles filled in the carbon monoxide pretreatment component to efficiently oxidize carbon monoxide in flue gas into carbon dioxide at a suitable temperature maintained by the heating component. This blocks the catalytic combustion reaction between carbon monoxide and the zirconium oxide analyzer probe, avoiding the problem of low monitoring values ​​due to oxygen consumption.

[0014] The device adopts a design logic of "extended probe + detachable connection". The extended probe connects to the original probe filter of the zirconia analyzer through a detachable structure, without requiring modification to the analyzer itself. It can be directly adapted to mainstream zirconia analyzers on the market, significantly reducing equipment modification costs and replacement barriers. At the same time, the extended probe has a hollow tubular structure, which can seamlessly connect with the original gas path, ensuring smooth flow of flue gas through the pretreatment components without affecting the normal sampling rate and response speed of the analyzer, achieving a "plug and play" adaptation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer, provided by this utility model.

[0017] In the diagram: 1. Zirconia analyzer probe filter; 2. Flange; 3. Fixing nut; 4. Quartz glass tube; 5. Extended probe; 6. Copper oxide particles; 7. Heating wire. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] This invention provides a device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer, such as... Figure 1 As shown, the device includes an extended probe 5, a carbon monoxide pretreatment assembly, and a heating assembly. The extended probe 5 is a hollow tubular structure, with one end connected to the zirconia analyzer probe filter 1 via a detachable flange 2. The heating assembly is located on the inner wall of the extended probe 5 and consists of heating wires 7 laid on the inner shell of the extended probe 5. The carbon monoxide pretreatment assembly is located within the hollow cavity of the extended probe 5, with its inlet end corresponding to the inlet of the extended probe 5 and its outlet end sealed and connected to the gas inlet end of the zirconia analyzer probe filter 1. The carbon monoxide pretreatment assembly is filled with copper oxide particles 6.

[0020] The carbon monoxide pretreatment assembly includes a quartz glass tube 4 and high-temperature resistant quartz wool. The quartz glass tube 4 is installed inside the extended probe 5. The high-temperature resistant quartz wool is filled at both ends of the quartz glass tube 4, and copper oxide particles 6 are filled inside the quartz glass tube 4 and located between the high-temperature resistant quartz wool at both ends. Each end of the quartz glass tube 4 is provided with a plug 3 for fixing it inside the extended probe 5. The plug 3 has a vent hole connecting the zirconia analyzer probe filter 1 to the quartz glass tube 4. The outer ring of the plug 3 is provided with a rubber ring, which is interference-fitted with the extended probe 5.

[0021] The quartz glass tube and high-temperature resistant quartz wool are primarily composed of high-purity silica, which can operate stably for extended periods at temperatures between 280℃ and 350℃ without softening, decomposition, or releasing impurities. The heating wire is made of high-temperature resistant metal; the higher the carbon monoxide concentration, the higher the heating temperature can be adjusted, maintaining a constant reaction temperature. Furthermore, it is not easily damaged in the high-temperature, high-dust environments of industrial flue gas. This design allows the device to be directly applied to stationary pollution source scenarios in industries such as steel, chemicals, and metallurgy. Even in flue gas temperature fluctuations or high-concentration dust environments, it maintains stable carbon monoxide removal efficiency and structural reliability, avoiding frequent failures due to poor adaptability to operating conditions.

[0022] Working Principle: First, the outlet end of the zirconia analyzer probe filter 1 is connected to the inlet end of the zirconia analyzer body via threads, snaps, or clamps. The temperature inside the quartz glass tube 4 is heated to 300℃ using a heating wire. Then, industrial flue gas containing carbon monoxide is introduced into the quartz glass tube 4. Due to the high-temperature resistant quartz wool filling both ends of the quartz glass tube 4, firstly, its loose fibrous structure can intercept tiny dust particles and impurities in the flue gas, preventing these impurities from adhering to the surface of the copper oxide particles 6 and clogging the active sites of the particles, ensuring that the copper oxide particles 6 are always in a highly efficient reaction state; secondly, the quartz wool can firmly confine the copper oxide particles 6 in the middle area of ​​the quartz glass tube 4, avoiding particle movement caused by flue gas impact or device vibration, ensuring that the catalytic reaction always takes place in a stable space; thirdly, the quartz wool filling both ends can reduce the movement speed of the flue gas in the quartz glass tube 4, increasing the reaction time between carbon monoxide and copper oxide particles 6 in the flue gas.

[0023] When the flue gas reaches the quartz glass tube 4, the carbon monoxide in the flue gas undergoes a catalytic reaction with the copper oxide particles 6. The temperature of the hollow cavity inside the extended probe 5 is raised by electric heating. The heating temperature can be adjusted according to the carbon monoxide concentration: if the temperature is too low, the copper oxide's oxidizing activity is insufficient, and it cannot efficiently convert carbon monoxide into carbon dioxide; if the temperature is too high, the copper oxide particles 6 may sinter and become deactivated, thus reducing the reaction efficiency. The design of the heating wire 7 directly attached to the inner shell of the extended probe 5 allows heat to be quickly transferred to the entire cavity, ensuring that the quartz glass tube 4 and the internal copper oxide particles 6 are heated evenly, thus improving the catalytic reaction efficiency.

[0024] The clean flue gas, pretreated with carbon monoxide, flows out from the outlet of the quartz glass tube 4 and then enters the zirconia analyzer probe filter 1, which is sealed to the extended probe 5. The filter further filters out any minute impurities that may remain in the flue gas, ensuring that the flue gas entering the zirconia analyzer meets the instrument's monitoring requirements. At this point, the oxygen in the flue gas has not been consumed by the carbon monoxide. Based on the oxygen ion conduction characteristics of the solid electrolyte, the zirconia analyzer can accurately measure the actual oxygen partial pressure in the flue gas, solving the interference problem of low monitoring values ​​in high-concentration carbon monoxide scenarios.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer, characterized in that, The device includes an extended probe (5), a carbon monoxide pretreatment component, and a heating component. The extended probe (5) is a hollow tubular structure, with one end connected to the zirconia analyzer probe filter (1) via a detachable structure. The heating component is located on the inner wall of the extended probe (5). The carbon monoxide pretreatment component is located in the hollow cavity of the extended probe (5), with the inlet end of the carbon monoxide pretreatment component corresponding to the inlet of the extended probe (5), and the outlet end being sealed and connected to the gas inlet end of the zirconia analyzer probe filter (1). The carbon monoxide pretreatment component is filled with copper oxide particles (6).

2. The device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer according to claim 1, characterized in that, The carbon monoxide pretreatment component includes a quartz glass tube (4) and high-temperature resistant quartz wool; the quartz glass tube (4) is installed inside the extended probe (5), the high-temperature resistant quartz wool is filled at both ends of the quartz glass tube (4), and copper oxide particles (6) are filled inside the quartz glass tube (4) and located between the high-temperature resistant quartz wool at both ends.

3. The device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer according to claim 1, characterized in that, The heating component is a heating wire (7) laid on the inner shell of the extended probe (5).

4. The device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer according to claim 2, characterized in that, The two ends of the quartz glass tube (4) are respectively provided with plugs (3) for fixing it inside the extended probe (5). The plugs (3) are provided with vent holes that connect the zirconia analyzer probe filter (1) and the quartz glass tube (4). The outer ring of the plugs (3) is provided with rubber rings, and the rubber rings are interference fit with the extended probe (5).

5. The device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer according to claim 1, characterized in that, The extended probe (5) is detachably connected to the zirconia analyzer probe filter (1) via a flange (2).

6. The device for suppressing the interference of carbon monoxide on a zirconium oxide analyzer according to claim 1, characterized in that, The heating temperature of the heating component is 280℃-350℃.

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