Reaction tower for detecting CO in sintering flue gas

Abstract

The utility model relates to a reaction tower for detecting CO in sintering flue gas, which comprises a reaction tower body, an inlet CO analyzer and an outlet CO analyzer, the top of the reaction tower body is connected with a flue gas inlet pipe, and the bottom of the reaction tower body is connected with a flue gas discharge pipe; the flue gas inlet pipe is provided with a first detection interface, the flue gas discharge pipe is provided with a second detection interface, the inlet CO analyzer is connected with the first detection interface through a first detection pipeline, and the outlet CO analyzer is connected with the second detection interface through a second detection pipeline. According to the reaction tower disclosed by the utility model, the inlet CO analyzer is arranged on the flue gas inlet pipe, and the outlet CO analyzer is arranged on the flue gas outlet pipe, so that CO in flue gas at the inlet and the outlet of the reaction tower can be detected, and data support can be provided for subsequent calculation of CO removal efficiency.

Description

Technical Field

[0001] The utility model relates to the technology of continuous monitoring of CO in the flue gas of sintering machines in the iron and steel industry, and a reaction tower for detecting CO in sintering flue gas. Background Art

[0002] In some parts of the country, carbon monoxide treatment projects are carried out in iron and steel and coking enterprises, and the evaluation of the treatment effect of carbon monoxide in the sintering flue gas of iron and steel enterprises is carried out. Relevant atmospheric treatment units in some areas need to monitor the online CO monitoring data of enterprises for 24 hours, and at the same time ensure the accuracy and integrity of the data. In order to meet the requirements of relevant policies and ensure the stable operation of sintering machines, a reaction tower capable of detecting CO is needed. Content of the Utility Model

[0003] The utility model provides a reaction tower for detecting CO in sintering flue gas to solve one or several of the technical problems existing in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: A reaction tower for detecting CO in sintering flue gas includes a reaction tower body, an inlet CO analyzer and an outlet CO analyzer. A flue gas inlet pipe is connected to the top of the reaction tower body, and a flue gas discharge pipe is connected to the bottom of the reaction tower body; a first detection interface is provided on the flue gas inlet pipe, and a second detection interface is provided on the flue gas discharge pipe. The inlet CO analyzer is connected to the first detection interface through a first detection pipeline, and the outlet CO analyzer is connected to the second detection interface through a second detection pipeline.

[0005] Both the inlet CO analyzer and the outlet CO analyzer adopt the high-temperature extraction method. The flue gas is extracted from the pipeline by a high-temperature pump, and after being heated by the probe and the heat tracing pipeline throughout the process, the sample gas enters the analytical instrument. The entire pretreatment unit of the CO analyzer adopts the full-temperature high-temperature method, which can effectively avoid the measurement error caused by condensation and the corrosion of the acid gas to the flow path system.

[0006] The beneficial effect of the utility model is that: in the reaction tower of the utility model, by setting an inlet CO analyzer on the flue gas inlet pipe and an outlet CO analyzer on the flue gas discharge pipe, the CO in the inlet and outlet flue gas of the reaction tower can be detected, which can provide data support for calculating the CO removal efficiency in the subsequent process.

[0007] On the basis of the above technical solution, the utility model can also be improved as follows.

[0008] Further, it further includes an inlet temperature, pressure and flow detection device;

[0009] The imported temperature and pressure flow detection device is connected to the first detection pipeline or the first detection interface through a third detection pipeline; or, the imported temperature and pressure flow detection device is arranged on the first detection pipeline.

[0010] The beneficial effect of adopting the above further solution is that by setting the imported temperature and pressure flow detection device, the temperature, pressure and flow data of the imported flue gas can be detected in real time, the flue gas temperature at the sampling point, the overall pressure loss and air leakage rate of the reaction tower can be understood, and when the data deviation is large, timely feedback can be made and troubleshooting and handling can be carried out, which is beneficial to the maintenance and overhaul of the equipment.

[0011] Further, the imported temperature and pressure flow detection device includes an imported temperature sensor, an imported pressure sensor and an imported flowmeter, and the imported temperature sensor, the imported pressure sensor and the imported flowmeter are connected in series on the third detection pipeline or the first detection pipeline.

[0012] Further, the imported temperature sensor, the imported pressure sensor and the imported flowmeter are integrated in a first housing.

[0013] The beneficial effect of adopting the above further solution is that by integrating the imported temperature sensor, the imported pressure sensor and the imported flowmeter in the first housing, the integration effect is better, which is convenient for the disassembly and assembly of the entire imported temperature and pressure flow detection device.

[0014] Further, the first housing is integrated in the cabinet of the imported CO analyzer.

[0015] The beneficial effect of adopting the above further solution is that it is convenient for the disassembly and assembly of the entire detection device.

[0016] Further, an exported temperature and pressure flow detection device is also included;

[0017] The exported temperature and pressure flow detection device is connected to the second detection pipeline or the second detection interface through a fourth detection pipeline; or, the exported temperature and pressure flow detection device is arranged on the second detection pipeline.

[0018] The beneficial effect of adopting the above further solution is that by setting the exported temperature and pressure flow detection device, the temperature, pressure and flow data of the exported flue gas can be detected in real time, the flue gas temperature at the sampling point, the overall pressure loss and air leakage rate of the reaction tower can be understood, and when the data deviation is large, timely feedback can be made and troubleshooting and handling can be carried out, which is beneficial to the maintenance and overhaul of the equipment.

[0019] Further, the exported temperature and pressure flow detection device includes an exported temperature sensor, an exported pressure sensor and an exported flowmeter, and the exported temperature sensor, the exported pressure sensor and the exported flowmeter are connected in series on the fourth detection pipeline or the second detection pipeline.

[0020] Further, the outlet temperature sensor, the outlet pressure sensor, and the outlet flowmeter are integrated within the second housing.

[0021] The beneficial effect of adopting the above further solution is that by integrating the outlet temperature sensor, the outlet pressure sensor, and the outlet flowmeter within the second housing, the integration effect is better, facilitating the disassembly and assembly of the entire outlet temperature, pressure, and flow detection device.

[0022] Further, the second housing is integrated within the cabinet of the outlet CO analyzer.

[0023] The beneficial effect of adopting the above further solution is that it facilitates the disassembly and assembly of the entire detection device.

[0024] Further, both the inlet CO analyzer and the outlet CO analyzer are connected to an industrial control computer with a display screen, and there are two industrial control computers, which are respectively integrated within the cabinet of the inlet CO analyzer and the cabinet of the outlet CO analyzer.

[0025] The beneficial effect of adopting the above further solution is that the detection data of each detection instrument can be observed in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a reaction tower for detecting CO in sintering flue gas according to the present utility model.

[0027] In the drawings, the list of components represented by each reference numeral is as follows:

[0028] 1. Reaction tower body; 2. Inlet CO analyzer; 3. Outlet CO analyzer; 4. Inlet temperature sensor; 5. Inlet pressure sensor; 6. Inlet flowmeter; 7. Outlet temperature sensor; 8. Outlet pressure sensor; 9. Outlet flowmeter; 10. First detection pipeline; 11. Second detection pipeline; 12. Flue gas inlet pipe; 13. Flue gas discharge pipe; 14. Denitrification catalyst packing layer; 15. CO catalyst packing layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0030] As Figure 1As shown in the figure, a reaction tower for detecting CO in sintering flue gas according to this embodiment includes a reaction tower body 1, an inlet CO analyzer 2, and an outlet CO analyzer 3. A flue gas inlet pipe 12 is connected to the top of the reaction tower body 1, and a flue gas discharge pipe 13 is connected to the bottom of the reaction tower body 1. A first detection interface is provided on the flue gas inlet pipe 12, and a second detection interface is provided on the flue gas discharge pipe 13. The inlet CO analyzer 2 is connected to the first detection interface through a first detection pipeline 10, and the outlet CO analyzer 3 is connected to the second detection interface through a second detection pipeline 11.

[0031] As Figure 1 shown, a preferred solution of this embodiment is that the reaction tower further includes an inlet temperature, pressure and flow rate detection device. The inlet temperature, pressure and flow rate detection device is connected to the first detection pipeline 10 or the first detection interface through a third detection pipeline; or, the inlet temperature, pressure and flow rate detection device is arranged on the first detection pipeline 10.

[0032] By setting the inlet temperature, pressure and flow rate detection device, the temperature, pressure and flow rate data of the inlet flue gas can be detected in real time, the flue gas temperature at the sampling point, the overall pressure loss of the reaction tower and the air leakage rate can be understood, and when the data deviation is large, it can be timely feedback and the fault can be checked and processed, which is beneficial to the maintenance and repair of the equipment.

[0033] Specifically, as Figure 1 shown, the inlet temperature, pressure and flow rate detection device includes an inlet temperature sensor 4, an inlet pressure sensor 5 and an inlet flow meter 6. The inlet temperature sensor 4, the inlet pressure sensor 5 and the inlet flow meter 6 are connected in series on the third detection pipeline or the first detection pipeline 10.

[0034] Among them, the inlet temperature sensor 4, the inlet pressure sensor 5 and the inlet flow meter 6 can be set separately or integrated in the first housing. By integrating the inlet temperature sensor, the inlet pressure sensor and the inlet flow meter in the first housing, the integration effect is better, which is convenient for the disassembly and assembly of the whole inlet temperature, pressure and flow rate detection device. The separately set inlet temperature sensor 4, inlet pressure sensor 5 and inlet flow meter 6 can be directly integrated and installed in the inlet CO analyzer, specifically integrated and installed in the housing of the inlet CO analyzer. For example, it can be fixedly installed in the housing of the inlet CO analyzer through bolts.

[0035] An alternative solution of this embodiment is that the first housing is integrated in the cabinet of the inlet CO analyzer 2. It is convenient for the disassembly and assembly of the whole detection device.

[0036] As Figure 1As shown in the figure, a preferred solution of this embodiment is that the reaction tower further includes an outlet temperature, pressure and flow rate detection device; the outlet temperature, pressure and flow rate detection device is connected to the second detection pipeline 11 through a fourth detection pipeline or to the second detection interface; alternatively, the outlet temperature, pressure and flow rate detection device is arranged on the second detection pipeline 11.

[0037] By setting the outlet temperature, pressure and flow rate detection device, the temperature, pressure and flow rate data of the outlet flue gas can be detected in real time, the flue gas temperature at the sampling point, the overall pressure loss of the reaction tower and the air leakage rate can be understood, and when the data deviation is large, it can be fed back in time for troubleshooting and processing, which is beneficial to the maintenance and overhaul of the equipment.

[0038] Specifically, as Figure 1 shown, the outlet temperature, pressure and flow rate detection device includes an outlet temperature sensor 7, an outlet pressure sensor 8 and an outlet flow meter 9, and the outlet temperature sensor 7, the outlet pressure sensor 8 and the outlet flow meter 9 are arranged in series on the fourth detection pipeline or the second detection pipeline 11.

[0039] Among them, the outlet temperature sensor 7, the outlet pressure sensor 8 and the outlet flow meter 9 can be set separately or integrated in the second housing. By integrating the outlet temperature sensor, the outlet pressure sensor and the outlet flow meter in the second housing, the integration effect is better and it is convenient to disassemble and assemble the entire outlet temperature, pressure and flow rate detection device. The separately arranged outlet temperature sensor 7, the outlet pressure sensor 8 and the outlet flow meter 9 can be directly integrated and installed in the outlet CO analyzer, specifically integrated and installed in the housing of the outlet CO analyzer. For example, it can be fixedly installed in the housing of the outlet CO analyzer by bolts.

[0040] An alternative solution of this embodiment is that the second housing is integrated in the cabinet of the outlet CO analyzer 3. It is convenient to disassemble and assemble the entire detection device.

[0041] An alternative solution of this embodiment is that both the inlet CO analyzer 2 and the outlet CO analyzer 3 are connected to an industrial control computer with a display screen. There are two industrial control computers, which are respectively integrated in the cabinets of the inlet CO analyzer and the outlet CO analyzer, and the detection data of each detection instrument can be observed in real time. The industrial control computer can also retrieve historical data and historical curves. If the industrial control computer is not set, the inlet CO analyzer 2 and the outlet CO analyzer can also be equipped with a PLC control system to achieve related functions.

[0042] Specifically, as Figure 1 shown, a denitration catalyst packing layer 14 and a CO catalyst packing layer 15 are arranged in the reaction tower body 1. The denitration catalyst packing layer 14 has two layers and is arranged above the CO catalyst packing layer 15.

[0043] It should be noted that Fourier transform infrared method is adopted for CO monitoring. The measurement principle of the Fourier transform high-temperature infrared gas analyzer is based on the Fourier transform infrared analysis measurement principle. The system is at high temperature throughout the process (above 180°C), ensuring the authenticity of the flue gas components. The CO analyzer can measure multiple components simultaneously, such as SO2, NO, NO2, HCl, NH3, HF, etc., without the need to add additional analyzers.

[0044] Among them, the inlet CO analyzer, outlet CO analyzer, inlet temperature sensor, inlet pressure sensor, inlet flowmeter, outlet temperature sensor, outlet pressure sensor, inlet flowmeter, and industrial control computer in this embodiment can all be obtained commercially. The detection processes of these devices are all conventional existing detections, and their internal structures are all conventional existing structures. The solution of this embodiment does not make any changes to the structures involved in the detection principle inside them. The inlet CO analyzer and outlet CO analyzer adopt the whole-process extraction non-dispersive infrared method for the inlet and outlet flue gas of the reaction tower. Only one-sided opening of the flue is required. It is a perforated type of non-laser measurement method, and the operation platform at the opening position is small. Adopting the whole-process high-temperature method, the flue gas components will not be lost and the data is accurate.

[0045] The reaction tower of this embodiment does not require separate temperature, pressure, and flow detection ports, reducing the number and dispersion of instruments and saving costs. Based on the detection data of the inlet CO analyzer and outlet CO analyzer, the difference in CO concentration between the inlet and outlet can be calculated, and further the CO removal efficiency can be calculated; it can also view the flue gas temperature, pressure, and flow data in real time, understand the flue gas temperature at the sampling point, the overall pressure loss and air leakage rate of the reaction tower. When the data deviation is large, it can give feedback in time and conduct fault troubleshooting and handling, which is beneficial to the maintenance and repair of the equipment.

[0046] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0047] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In the present utility model, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0051] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A reaction tower for detecting CO in sintering flue gas, characterized in that: It includes a reaction tower body, an inlet CO analyzer and an outlet CO analyzer. The top of the reaction tower body is connected to a smoke inlet pipe, and the bottom of the reaction tower body is connected to a smoke exhaust pipe. The smoke inlet pipe is provided with a first detection interface, and the smoke exhaust pipe is provided with a second detection interface. The inlet CO analyzer is connected to the first detection interface through a first detection pipeline, and the outlet CO analyzer is connected to the second detection interface through a second detection pipeline.

2. A reaction tower for detecting CO in sintering flue gas according to claim 1, characterized in that: It also includes an inlet temperature and pressure flow detection device; The inlet temperature, pressure and flow detection device is connected to the first detection pipeline through a third detection pipeline or to the first detection interface; or, the inlet temperature, pressure and flow detection device is arranged on the first detection pipeline.

3. A reaction tower for detecting CO in sintering flue gas according to claim 2, characterized in that: The inlet temperature and pressure flow detection device comprises an inlet temperature sensor, an inlet pressure sensor and an inlet flow meter, and the inlet temperature sensor, the inlet pressure sensor and the inlet flow meter are arranged in series on the third detection pipeline or the first detection pipeline.

4. A reaction tower for detecting CO in sintering flue gas according to claim 3, characterized in that: The inlet temperature sensor, the inlet pressure sensor and the inlet flow meter are integrated in the first housing.

5. A reaction tower for detecting CO in sintering flue gas according to claim 4, characterized in that: The first shell is integrated in the cabinet of the imported CO analyzer.

6. A reaction tower for detecting CO in sintering flue gas according to any one of claims 1 to 5, characterized in that: It also includes an outlet temperature, pressure and flow detection device; The outlet temperature, pressure and flow detection device is connected to the second detection pipeline through a fourth detection pipeline or to the second detection interface; or, the outlet temperature, pressure and flow detection device is arranged on the second detection pipeline.

7. A reaction tower for detecting CO in sintering flue gas according to claim 6, characterized in that: The outlet temperature and pressure flow detection device comprises an outlet temperature sensor, an outlet pressure sensor and an outlet flow meter, and the outlet temperature sensor, outlet pressure sensor and outlet flow meter are arranged in series on the fourth detection pipeline or the second detection pipeline.

8. A reaction tower for detecting CO in sintering flue gas according to claim 7, characterized in that: The outlet temperature sensor, the outlet pressure sensor and the outlet flow meter are integrated in the second housing.

9. A reaction tower for detecting CO in sintering flue gas according to claim 8, characterized in that: The second shell is integrated in the cabinet of the outlet CO analyzer.

10. A reaction tower for detecting CO in sintering flue gas according to claim 1, characterized in that: The inlet CO analyzer and the outlet CO analyzer are both connected to an industrial computer with a display screen. There are two industrial computers which are respectively integrated in a cabinet of the inlet CO analyzer and a cabinet of the outlet CO analyzer.

Images