Coke original size fraction temperature reaction inspection device

Abstract

The utility model relates to the technical field of coking and metallurgy, in particular to a coke primary fraction temperature reaction testing device which comprises a furnace body, a certain number of silicon molybdenum rods, a thermocouple, an exhaust hood, an exhaust pipe, a fixing frame, a corundum reactor, a lifting support, a frequency conversion controller and a gas circuit pipeline. The device can correspond to the coke metallurgical performance under the conventional production condition of a blast furnace, covers the melting loss detection after the coke reaction at 1300-1500 DEG C, and can meet the detection of reactivity and post-reaction strength of the coke at the high temperature of 1300-1500 DEG C; the high-temperature reaction quality of different cokes is evaluated, and a constructive guiding effect is achieved for guiding blast furnace production.

Description

Technical Field

[0001] This utility model relates to the field of coking and metallurgical technology, specifically to a device for testing the temperature reaction of raw coke particles. Background Technology

[0002] The existing standard for testing the thermal reactivity and post-reaction strength of coke in the coking and metallurgical industries (GB / T4000-2017) involves preparing ordinary coke into 23-25mm spherical particles, reducing 200g of each particle, and reacting them with carbon dioxide at 1100℃ for 2 hours. This method cannot fully simulate the actual reaction of coke at different particle sizes in a blast furnace under conventional blast furnace temperatures (above 1300℃). This design uses a sample to test the particle size index of coke after drum rotation. Within different particle size ranges, 2000g ± 20g of each sample is proportionally reduced and tested in a high-temperature reactor to achieve a simulation experiment corresponding to the actual furnace temperature in blast furnace production. This aims to evaluate the quality differences of metallurgical cokes with different thermal properties.

[0003] Unlike the existing GB / T4000-2017 equipment and methods for testing the thermal reactivity and post-reaction strength of coke, the existing methods do not match the particle size and temperature of the coke in the actual production of blast furnaces, and cannot simulate the real reaction of coke in the blast furnace production process. In order to overcome the problem of the discrepancy between the experiment and the actual production guidance, a coke original particle size temperature reaction testing device is proposed to solve the above problems. Utility Model Content

[0004] This utility model is achieved through the following technical solution: a coke raw particle size temperature reaction testing device, comprising: a furnace body, a certain number of silicon molybdenum rods, thermocouples, an exhaust hood, an exhaust pipe, a fixing frame, a corundum reactor, a lifting support, a frequency converter, and a gas pipeline. The furnace body has a through-type structure in the middle, and a fixing frame is provided at its bottom. A certain number of silicon molybdenum rods are inserted into the furnace body along the furnace opening axially at a certain distance from the furnace opening. A certain number of silicon molybdenum rods are connected in series by silicon molybdenum rod connecting strips. The thermocouples are inserted in the middle of the back of the furnace body. The exhaust hood and the exhaust pipe are connected and disposed at the top of the furnace body. A corundum reactor is fixedly inserted in the center of the furnace chamber. A wedge-shaped rubber plug is also provided at the bottom of the corundum reactor. The lifting support is disposed at the bottom of the corundum reactor and the wedge-shaped rubber plug. A vent pipe is inserted in the middle of the wedge-shaped rubber plug. The two ends of the vent pipe are respectively connected to the outside and the inside of the furnace body. The frequency converter is electrically connected to the silicon molybdenum rods and the thermocouples. The gas pipeline is connected and disposed at the bottom of the furnace body.

[0005] Preferably, the frequency converter includes a housing, on which a display controller, an ammeter, a voltmeter, a start button, a stop button, a main switch, and indicator lights are installed. The frequency converter also contains a frequency converter, a thyristor, and a transformer.

[0006] Preferably, the gas pipeline includes a nitrogen pipeline, a carbon dioxide pipeline, a gas flow meter, and a tee. The inlets of the nitrogen pipeline, the carbon dioxide pipeline, and the gas flow meter are respectively connected to the tee, and the outlet of the gas flow meter is connected to the vent pipe.

[0007] Preferably, the inner wall of the furnace body is further provided with a ceramic fiber lining.

[0008] Preferably, the silicon molybdenum rod has a U-shaped structure.

[0009] Preferably, inside the furnace body, large-pore refractory bricks and small-pore refractory bricks are arranged sequentially above the wedge-shaped rubber plug, and permeable refractory bricks are arranged at the top near the furnace opening.

[0010] Preferably, the atmospheric porous refractory bricks, small porous refractory bricks, and permeable refractory bricks are high-alumina bricks.

[0011] Preferably, the large-pore refractory brick is a hollow frustum structure, the small-pore refractory brick is a cylindrical structure with a certain number of vent holes penetrating its body along its axial direction, and the permeable refractory brick is a cylindrical structure with permeable holes penetrating its body along its axial direction.

[0012] Compared with existing technologies, this utility model has the following advantages:

[0013] This utility model can be applied to the thermal properties of metallurgical coke under actual blast furnace production conditions, covering the melting loss detection of coke after reaction at 1300℃-1500℃. It can meet the requirements for high-temperature deterioration reaction inspection of coke at 1300℃~1500℃, evaluate the high-temperature reaction quality of different cokes, and play a constructive guiding role in guiding blast furnace production. Attached Figure Description

[0014] 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the CC portion of this utility model;

[0018] Figure 4This is a cross-sectional view of the BB section of this utility model;

[0019] Figure 5 This is a cross-sectional view of section AA of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the frequency converter controller of this utility model;

[0021] In the picture:

[0022] 1-Exhaust duct, 2-Exhaust hood, 3-Corundum reactor, 4-Silicon molybdenum rod connecting strip, 5-Furnace body, 6-Silicon molybdenum rod, 7-Thermocouple, 8-Fixing frame, 9-Wedge rubber plug, 10-Ventilation pipe, 11-Lifting bracket, 12-Large porous refractory brick, 13-Small porous refractory brick, 14-Permeable refractory brick, 15-Gas flow meter, 16-Nitrogen pipeline, 17-Carbon dioxide pipeline, 18-Outer casing, 19-Ammeter, 20-Display controller, 21-Voltmeter, 22-Start button, 23-Indicator light, 24-Main switch, 25-Stop button, 26-Tee. Detailed Implementation

[0023] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. The technical solutions of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0024] Please see Figure 1-5This utility model provides a technical solution: a coke raw particle size temperature reaction testing device, comprising: a furnace body 5, a certain number of silicon molybdenum rods 6, thermocouples 7, an exhaust hood 2, an exhaust pipe 1, a fixing frame 8, a corundum reactor 3, a lifting support 11, a frequency converter and gas pipelines. The furnace body 5 is a centrally through-type square structure, 600mm long, 600mm wide, and 820mm high, with a ceramic fiber lining installed inside. The furnace head and furnace bottom are both φ135mm thick, 50mm high, and 200mm deep. A φ135mm diameter is reserved in the middle heating and insulation area. The furnace body is 250mm thick, 50mm wide, and 400mm high. A fixing bracket 8 is installed at the bottom. Six single-sided openings, each 15mm long and 40mm wide, are made 20mm from the outer edge of the top furnace opening, evenly distributed around the furnace top. A U-shaped silicon molybdenum rod 6, φ10mm * 620mm high, is vertically inserted into the furnace top opening and fixed. This ensures vertical ventilation for the reserved φ135mm reactor station. The silicon molybdenum rod 6, connected in series via silicon molybdenum rod connecting strap 4, is connected to the frequency converter. A type B thermocouple 7 is inserted in the middle of the back of the furnace body 5. The exhaust hood 2 and... An exhaust duct 1 is connected to the top of the furnace body 5 to discharge toxic and harmful gases. A corundum reactor 3 is inserted and fixed in the center of the furnace chamber. The corundum reactor 3 is φ132mm in diameter and 1000mm long, extending 150mm below the furnace body 5. A wedge-shaped rubber plug 9 is also provided at the bottom of the corundum reactor 3. A lifting bracket 11 is located at the bottom of the corundum reactor 3 and the wedge-shaped rubber plug 9 to fix the wedge-shaped rubber plug 9 and support the corundum reactor 3. A large-pore refractory brick 12 with a diameter of φ130mm and a length of 300mm is placed inside the corundum reactor 3, followed by a small-pore refractory brick. A perforated refractory brick 13 is used to slide the sample into the furnace bottom, ensuring that the sample is heated and kept warm in the center of the furnace. A fixed ladder is installed opposite the furnace body 5. The coke sample is placed above the corundum reactor 3. After the coke sample is placed into the corundum reactor 3, a perforated refractory brick 14 with a diameter of φ130mm, a height of 50mm, and a center diameter of φ18mm is placed on top to prevent the gas from blowing away the coke sample. A hole with a diameter of φ10mm is opened in the middle of the back of the furnace body 5, 400mm away from the furnace bottom, into which a Class S thermocouple 7 is inserted. The function of the furnace body 5 is to heat and keep warm the coke and carry out high-temperature reaction.

[0025] A vent pipe 10 is inserted in the middle of the wedge-shaped rubber plug 9. The two ends of the vent pipe 10 are connected to the outside and the inside of the furnace body 5, respectively. The frequency converter is electrically connected to the silicon molybdenum rod 6 and the thermocouple, respectively. The gas pipeline is connected to the bottom of the furnace body 5.

[0026] In some embodiments, the frequency converter includes a housing 18, which is 510mm long, 600mm wide, and 910mm high. The housing 18 is equipped with a display controller 20, an ammeter 19, a voltmeter 21, a start button 22, a stop button 25, a main switch 24, and an indicator light 23. The frequency converter also has a frequency converter connected to a thyristor and then connected to a transformer, which controls the temperature of the furnace body 5, including the heating rate, the holding time, and the timed power-off.

[0027] In some embodiments, the gas pipeline includes a nitrogen pipeline 16, a carbon dioxide pipeline 17, a gas flow meter 15, and a tee 26. Pressure regulators and φ10mm gas pipes are installed on the nitrogen pipeline 16, the carbon dioxide pipeline 17, or the gas cylinder, respectively. Quick-connect valves are installed on the nitrogen pipeline 16 and the carbon dioxide pipeline 17 and then connected to the tee 26. One of the three lines is connected to nitrogen, one to carbon dioxide, and one to the inlet of the gas flow meter 15. The outlet of the flow meter is connected to the vent pipe 10. The function is to control the delivery of nitrogen and carbon dioxide gas to the corundum reactor 3 through the gas flow meter 15, so as to provide nitrogen protection and carbon dioxide reaction.

[0028] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. For those skilled in the art to which the present invention pertains, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered as falling within the scope of patent protection determined by the submitted claims.

Claims

1. A device for testing the temperature reaction of raw coke particles, characterized in that, include: The furnace body comprises a certain number of silicon molybdenum rods, thermocouples, an exhaust hood, an exhaust pipe, a fixing frame, an alumina reactor, a lifting support, a frequency converter, and gas pipelines. The furnace body has a through-type structure with a fixing frame at its bottom. A certain number of silicon molybdenum rods are inserted into the furnace body along the furnace opening axis at a certain distance from the furnace opening. The silicon molybdenum rods are connected in series by a silicon molybdenum rod connecting strip. The thermocouples are inserted in the middle of the back of the furnace body. The exhaust hood and exhaust pipe are connected and positioned at the top of the furnace body. An alumina reactor is fixedly inserted in the center of the furnace chamber. A wedge-shaped rubber plug is also provided at the bottom of the alumina reactor. The lifting support is located at the bottom of the alumina reactor and the wedge-shaped rubber plug. A vent pipe is inserted in the middle of the wedge-shaped rubber plug. The two ends of the vent pipe are connected to the outside and the inside of the furnace body, respectively. The frequency converter is electrically connected to the silicon molybdenum rods and the thermocouples. The gas pipelines are connected and positioned at the bottom of the furnace body.

2. The coke raw particle size temperature reaction testing device according to claim 1, characterized in that, The frequency converter includes a housing, on which a display controller, an ammeter, a voltmeter, a start button, a stop button, a main switch, and indicator lights are installed. The frequency converter also contains a frequency converter, a thyristor, and a transformer.

3. The coke raw particle size temperature reaction testing device according to claim 1, characterized in that, The gas pipeline includes a nitrogen pipeline, a carbon dioxide pipeline, a gas flow meter, and a tee. The inlets of the nitrogen pipeline, the carbon dioxide pipeline, and the gas flow meter are respectively connected to the tee, and the outlet of the gas flow meter is connected to the vent pipe.

4. The coke raw particle size temperature reaction testing device according to claim 1, characterized in that, The inner wall of the furnace is also lined with ceramic fiber.

5. The coke raw particle size temperature reaction testing device according to claim 1, characterized in that, The silicon molybdenum rod has a U-shaped structure.

6. The coke raw particle size temperature reaction testing device according to claim 4, characterized in that, Inside the furnace body, large-pore refractory bricks and small-pore refractory bricks are arranged sequentially above the wedge-shaped rubber plug, and permeable refractory bricks are arranged at the top near the furnace opening.

7. The coke raw particle size temperature reaction testing device according to claim 6, characterized in that, The atmospheric porous refractory bricks, small porous refractory bricks, and permeable refractory bricks are high-alumina bricks.

8. The coke raw particle size temperature reaction testing device according to claim 6, characterized in that, The atmospheric porous refractory brick has a hollow frustum structure, the small porous refractory brick has a cylindrical structure with a certain number of vent holes penetrating its body along its axial direction, and the permeable porous refractory brick has a cylindrical structure with permeable holes penetrating its body along its axial direction.

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