A blast furnace top gas sampling and intelligent temperature control device

Abstract

The utility model discloses a blast furnace top coal gas sampling and intelligent temperature control device, characterized by cross temperature measuring device cantilever insertion type detector as the basis, through the addition of coal gas sampling channel, the addition of blast furnace top water spraying supply channel, the addition of multi-point blast furnace top water spraying (spraying) nozzle and coal gas sampling port, the cross temperature measuring, blast furnace top water spraying, coal gas sampling and other multiple devices with different functions on the blast furnace top coal gas sealing cover are integrated into a set of device, and intelligent temperature control system and blast furnace condition intelligent auxiliary analysis system realize intelligent and automatic operation. Its advantages are that it can reduce equipment investment and later operation and maintenance cost, reduce too many equipment openings on the coal gas sealing cover, reduce construction engineering quantity, obtain blast furnace internal coal gas distribution curve and improve blast furnace operation. It is suitable for popularization in new construction and transformation projects of various steel enterprises.

Description

Technical Field

[0001] This invention patent relates to a device that combines blast furnace top gas sampling and intelligent temperature control, belonging to the field of blast furnace ironmaking equipment. Background Technology

[0002] Gas temperature measuring devices, furnace top water jets, and gas sampling devices have been maturely applied for many years as independent equipment. Blast furnace top gas hoods typically have 1-4 "cross-shaped temperature measuring devices" and 6-12 furnace top water jets. The large number of devices results in numerous openings in the gas hood shell, leading to a large amount of construction work. In China, blast furnace top gas sampling is generally located on the clean gas main pipeline between the dry bag filter and the TRT (Total Gas Refrigerant Filter). Based on the measured gas composition, only the overall gas utilization rate of the blast furnace can be obtained. To obtain the gas distribution and utilization rate in different areas inside the blast furnace, some foreign blast furnaces have independent gas sampling devices in the gas hood area, but these are bulky and expensive.

[0003] Currently, some blast furnaces have adopted devices that combine gas temperature measurement and gas sampling functions, but there is no device that integrates the three functions of gas temperature measurement, gas sampling, and furnace top water injection. Summary of the Invention

[0004] The purpose of this invention is to provide a device that combines three functions: gas temperature measurement, gas sampling, and furnace top water injection, overcoming the problems and shortcomings of existing devices, reducing equipment investment and subsequent operation and maintenance costs; reducing excessive equipment openings on the gas cover, thus reducing the amount of construction work; obtaining the gas distribution curve inside the blast furnace, thus improving blast furnace operation; and achieving intelligent and automated operation.

[0005] The main concept of this invention is to integrate multiple devices with different functions, such as cross temperature measurement, furnace top water supply, and gas sampling, on the blast furnace top gas cover into a single device by adding multi-point gas sampling channels, furnace top water supply channels, and multi-point furnace top water spray nozzles. This is achieved through a gas sampling analyzer and a furnace condition intelligent analysis system, enabling intelligent and automated operation.

[0006] The technical solution of this invention: A device combining blast furnace top gas sampling and intelligent temperature control, comprising a support structure, a cantilever structure, a furnace top water supply channel, a water control valve, a temperature measuring thermocouple, a furnace top water spray nozzle, a water supply pipeline, a gas sampling channel, a gas sampling control valve, a gas sampling port, connecting pipelines, a gas sampling analyzer, and a furnace condition intelligent analysis system, characterized in that:

[0007] 1) The end of the cantilever structure is connected to the support structure;

[0008] 2) The cantilever structure is provided with the furnace top water supply channel, and the furnace top water supply channel is provided with the water control valve at the front end.

[0009] 3) The cantilever structure is equipped with the aforementioned temperature-measuring thermocouple;

[0010] 4) The furnace top water spray nozzles are evenly distributed outside the cantilever structure, and the furnace top water spray nozzles are connected to the furnace top water supply channel through the water supply pipe.

[0011] 5) The gas sampling channel is arranged inside the cantilever structure;

[0012] 6) The gas sampling ports are evenly distributed outside the cantilever structure, and the gas sampling ports are connected to the gas sampling channel through the connecting pipe. The gas sampling control valve is installed at the front of the gas sampling channel.

[0013] 7) The gas sampling analyzer is connected to the gas sampling control valve.

[0014] Furthermore, to ensure the service life of the cantilever structure and the furnace top water spray nozzle, the materials of the cantilever structure and the furnace top water spray nozzle are heat-resistant, pressure-resistant and wear-resistant materials.

[0015] Furthermore, the feature is that the temperature-measuring thermocouple and the water-spraying control valve are communicatively connected to the intelligent furnace condition analysis system. The temperature-measuring thermocouple measures the gas temperature at a corresponding position on the furnace top in real time. When the measured temperature exceeds a preset temperature, the intelligent furnace condition analysis system sends a water-spraying signal and controls the water-spraying control valve to open, causing the furnace top water-spraying nozzles to spray water to cool the gas flow at the furnace top. When the measured temperature is lower than the preset temperature, the intelligent furnace condition analysis system sends a water-stop signal, controls the water-spraying control valve to close, and cuts off the water supply to the furnace top water-spraying nozzles.

[0016] Furthermore, the feature is that the gas sampling control valve and the gas sampling analyzer are communicatively connected to the intelligent furnace condition analysis system. When it is necessary to sample and analyze the composition of the gas flow, the intelligent furnace condition analysis system sends a sampling signal to cut off the purging gas and allow the gas to enter the gas sampling analyzer through the gas sampling channel. The gas sampling analyzer analyzes the gas composition and transmits the analysis results to the intelligent furnace condition analysis system via communication. Subsequently, the intelligent furnace condition analysis system sends a signal to cut off the gas flow, while the purging gas continues to purge.

[0017] The main beneficial effects of this invention are as follows:

[0018] 1. Reduce equipment investment and subsequent operation and maintenance costs;

[0019] 2. It avoids excessive equipment openings on the gas sealing cover, reducing the amount of construction work;

[0020] 3. Obtain the gas distribution curve inside the blast furnace to improve blast furnace operation;

[0021] 4. The operation is intelligent and automated. Attached Figure Description

[0022] This invention has appendices Figure 2 Page 1 of 3.

[0023] Figure 1 This is a schematic diagram of the device of the present invention.

[0024] The markings in the diagram are as follows: 1-Support structure; 2-Cantilever structure; 3-Water supply channel to the furnace top; 4-Water control valve; 5-Thermocouple; 6-Water nozzle to the furnace top; 7-Water supply pipeline; 8-Gas sampling channel; 9-Gas sampling control valve; 10-Gas sampling port; 11-Connecting pipeline; 12-Gas sampling analyzer; 13-Intelligent furnace condition analysis system.

[0025] Figure 2 This is a schematic diagram of the furnace top water injection control principle of the furnace condition intelligent analysis system.

[0026] Figure 3 This is a schematic diagram of the gas sampling control principle of the intelligent furnace condition analysis system. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, such as... Figure 1 As shown, a device combining blast furnace top gas sampling and intelligent temperature control includes a support structure 1, a cantilever structure 2, a furnace top water supply channel 3, a water supply control valve 4, a temperature measuring thermocouple 5, a furnace top water spray nozzle 6, a water supply pipeline 7, a gas sampling channel 8, a gas sampling control valve 9, a gas sampling port 10, a connecting pipeline 11, a gas sampling analyzer 12, and a furnace condition intelligent analysis system 13.

[0028] The support structure 1 and the cantilever structure 2 form the basic structure of the device. Temperature-measuring thermocouples 5 are evenly distributed inside the cantilever structure 2 to measure the gas temperature at corresponding locations. The furnace top water supply channel 3 is located inside the cantilever structure 2. A water supply control valve 4 is installed on the furnace top water supply channel 3 and connected to an external water supply pipeline. The furnace top water nozzles 6 are connected to the furnace top water supply channel 3 via a water supply pipe 7. The temperature-measuring thermocouples 5 and the water supply control valve 4 are connected to the furnace condition intelligent analysis system 13 via a signal circuit. When the temperature exceeds or falls below the system's preset temperature, the system sends a water supply or water stop signal, controlling the water supply control valve 4 to open or close, thereby causing the furnace top water nozzles 6 to spray water or stop supplying water, thus controlling the furnace top gas temperature. The furnace condition intelligent analysis system 13 furnace top water supply control principle diagram is shown below. Figure 2 As shown.

[0029] A gas sampling channel 8 is located inside the cantilever structure 2. A gas sampling port 10 is connected to the gas sampling channel 8 via a connecting pipe 11. A gas sampling control valve 9 is installed on the gas sampling channel 8. The gas sampling channel 8 is connected to the external purging gas and the gas sampling analyzer 12 via the gas sampling control valve 9. The gas sampling control valve 9 and the gas sampling analyzer 12 are connected to the intelligent furnace condition analysis system 13 via a signal circuit. When it is necessary to sample and analyze the composition of the gas flow, the intelligent furnace condition analysis system 13 sends a signal to cut off the purging gas and allow the gas to enter the gas sampling analyzer 12 through the gas sampling channel 8. The gas sampling analyzer 12 analyzes the gas composition and transmits the analysis results to the intelligent furnace condition analysis system 13. Subsequently, the intelligent furnace condition analysis system 13 sends a signal to cut off the gas flow, while the purging gas continues purging. The schematic diagram of the gas sampling control principle of the intelligent furnace condition analysis system 13 is shown below. Figure 3 As shown.

[0030] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A blast furnace top gas sampling and intelligent temperature control device, comprising a support structure, a cantilever structure, a water injection supply channel, a water injection control valve, a temperature measuring thermocouple, a water injection nozzle, a water supply pipeline, a gas sampling channel, a gas sampling control valve, a gas sampling port, a connecting pipeline, a gas sampling analyzer, and a blast furnace condition intelligent analysis system, characterized in that: 1) the cantilever structure is connected to the support structure at the end thereof; 2) the water injection supply channel is arranged inside the cantilever structure, and the water injection control valve is arranged at the front of the water injection supply channel; 3) the temperature measuring thermocouple is arranged inside the cantilever structure; 4) the water injection nozzles are uniformly arranged outside the cantilever structure, and the water injection nozzles are connected to the water injection supply channel through the water supply pipeline; 5) the gas sampling channel is arranged inside the cantilever structure; 6) the gas sampling ports are uniformly arranged outside the cantilever structure, and the gas sampling ports are connected to the gas sampling channel through the connecting pipeline, and the gas sampling control valve is arranged at the front of the gas sampling channel; and 7) the gas sampling analyzer is connected to the gas sampling control valve. The cantilever structure and the water injection nozzles are made of heat-resistant, pressure-resistant and wear-resistant materials. The temperature measuring thermocouple and the water injection control valve are communicatively connected to the blast furnace condition intelligent analysis system. The gas sampling control valve and the gas sampling analyzer are communicatively connected to the blast furnace condition intelligent analysis system. ​ ​ ​ ​ 2. The blast furnace top gas sampling and intelligent temperature control device of claim 1, wherein: ​ 3. The blast furnace top gas sampling and intelligent temperature control device of claim 1, wherein: ​ 4. The blast furnace top gas sampling and intelligent temperature control device of claim 1, wherein: ​

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