Coke solubility tester

Abstract

The utility model provides a kind of coke solution loss rate measuring device, belong to coke solution loss rate and solution loss after strength determination technical field, comprising: base, furnace body support seat, furnace body, lifting mechanism, reactor bracket, electronic balance, mounting bracket, corundum reactor, center thermocouple, side wall thermocouple and combustion mechanism;Furnace body support seat is fixed on base, and furnace body is fixed on furnace body support seat;Furnace body includes outer furnace shell, inner furnace shell, heat preservation material, hearth and silicon molybdenum bar, there is gap between inner furnace shell and outer furnace shell, the bottom and top of outer furnace shell are equipped with air hole, constant temperature zone is equipped in heat preservation material, and hearth and silicon molybdenum bar are all arranged in constant temperature zone;The device can record the mass change of coke test material in real time and reduce error, ensure the reliability of experimental results, to assess the solution loss rate of coke, and combustible gas generated in reaction process is discharged after combustion by combustion mechanism, to play the role of safety environmental protection.

Description

Technical Field

[0001] This utility model belongs to the technical field of coke dissolution rate and post-dissolution strength determination, specifically relating to a coke dissolution rate determination device. Background Technology

[0002] During the blast furnace smelting process, coke undergoes a solubility reaction with carbon dioxide, resulting in mass loss and a decrease in strength. The coke solubility rate is an important indicator for measuring the proportion of mass loss after coke reacts with carbon dioxide at high temperatures. Therefore, accurately measuring the coke solubility rate is crucial for evaluating coke quality.

[0003] The patent application with application number 202023000767.4 proposes an experimental electric furnace for determining the reactivity of coke. It adopts a three-stage heating technology to achieve an ultra-long constant temperature zone. The ultra-long constant temperature zone effectively ensures that the block coke reacts fully in the electric furnace at the specified temperature, making the experimental results more stable and making up for the problems of insufficient constant temperature zone and large temperature deviation between the upper and lower parts of the furnace body in single-stage heating electric furnaces.

[0004] However, in the existing technology, the coke sample needs to be cooled to room temperature after the high-temperature reaction is over before it can be weighed. However, the cooling process can easily introduce oxidation reaction or impurity adsorption, which can lead to errors in the quality of the detected coke. Furthermore, it is impossible to monitor the changes in the quality of the coke in real time during the reaction, which makes it difficult to accurately assess the solubility loss rate of the coke. The combustible gases generated during the reaction are directly emitted without treatment, which can easily cause explosion risks and pollution. Utility Model Content

[0005] Based on the above-mentioned technical problems, the purpose of this utility model is to provide a coke solubility loss rate measuring device. This device can record the mass change of coke sample in real time and reduce errors, ensuring the reliability of experimental results so as to evaluate the solubility loss rate of coke. In addition, the combustible gas generated during the reaction is burned by the combustion mechanism before being discharged, thereby playing a role in safety and environmental protection.

[0006] The specific technical solution is as follows: A device for determining the solubility loss rate of coke includes: a base, a furnace support, a furnace body, a lifting mechanism, a reactor bracket, an electronic balance, a mounting frame, a corundum reactor, a central thermocouple, sidewall thermocouples, and a combustion mechanism. The furnace support is fixed on the base, and the furnace body is fixed on the furnace support. The furnace body includes an outer furnace shell, an inner furnace shell, insulation material, a furnace chamber, and a silicon molybdenum rod. There is a gap between the inner and outer furnace shells. Ventilation holes are provided at the bottom and top of the outer furnace shell. A constant temperature zone is provided within the insulation material, and the furnace chamber and silicon molybdenum rod are both located within the constant temperature zone. The lifting mechanism is located on the base, and the reactor bracket is mounted on the lifting mechanism. The electronic balance is located on the reactor bracket. The corundum reactor is mounted on the electronic balance via the mounting frame, and coke sample is placed inside the corundum reactor. The probes of the temperature-measuring thermocouple assembly are inserted into the corundum reactor and the constant temperature zone, respectively. The combustion mechanism is located at the top of the furnace body and is connected to the furnace chamber.

[0007] In addition, the coke loss rate measuring device provided by the present invention may also have the following additional technical features: In the above technical solution, the lifting mechanism includes: a motor, a lead screw, two guide rods and a movable seat; the motor is fixed on the base, the output end of the motor is connected to the lead screw, and the lead screw is set on one side of the furnace body support; the movable seat is provided with a threaded hole, the threaded hole is threaded with the lead screw, and the movable seat is connected to the reactor bracket; the two guide rods are respectively set on both sides of the base, and one end of the two guide rods passes through both sides of the movable seat.

[0008] In the above technical solution, the combustion mechanism includes: a combustion chamber and an exhaust fan; the combustion chamber is located at the top of the outer furnace shell and is connected to the constant temperature zone; the exhaust fan is located on the furnace body support base and is positioned opposite to the exhaust port of the combustion chamber.

[0009] In the above technical solution, the temperature measuring thermocouple assembly includes: a central thermocouple and a sidewall thermocouple; the probe end of the central thermocouple is inserted into the corundum reactor; the sidewall thermocouple is set on one side of the outer furnace shell, inserted into the constant temperature zone, and the sidewall thermocouple is positioned opposite to the silicon molybdenum rod.

[0010] In the above technical solution, the top of the corundum reactor is equipped with a movable cover, the inside of the corundum reactor is equipped with a partition plate, the coke sample is placed on the partition plate, and the central thermocouple probe passes through the partition plate.

[0011] The above technical solution also includes: a thermocouple protection sleeve; the thermocouple protection sleeve is located outside the central thermocouple, and the thermocouple protection sleeve is provided with an exhaust port.

[0012] The above technical solution also includes: a heat sink, an air inlet, and an air inlet pipe; the air inlet is located on one side of the thermocouple protective sleeve, and the air inlet pipe is connected to the air inlet; the heat sink is located on the outside of the thermocouple protective sleeve.

[0013] In the above technical solution, the cross-section of the feed inlet at the bottom of the furnace is stepped; a mounting block is fixed on the mounting frame and the mounting block is embedded in the feed inlet.

[0014] In the above technical solution, the height of the constant temperature zone is 600mm.

[0015] The coke solubility loss rate measuring device of this utility model has the following advantages compared with the prior art: 1. The corundum reactor is raised and lowered smoothly by a lifting mechanism, and the mass change of the coke sample is recorded in real time by an electronic balance, thereby improving the automation of the experimental operation and the accuracy of data acquisition, reducing measurement errors, and thus assessing the solubility loss rate of the coke. The temperature inside the corundum reactor and the silicon molybdenum rod is monitored in real time by a thermocouple assembly to ensure the uniformity and stability of the reaction temperature and improve the reliability of the experimental results.

[0016] 2. The design incorporates a gap between the inner and outer furnace shells, with ventilation holes at the top and bottom of the outer furnace shell. This design allows for the temperature of the inner furnace shell to rise during the reaction process. As the temperature rises, cool outside air enters the gap between the inner and outer furnace shells through the ventilation holes at the bottom of the outer furnace shell, carrying away the heat from the inner furnace shell and escaping through the ventilation holes at the top of the outer furnace shell. This reduces the temperature of the outer furnace shell and prevents operators from being burned by high temperatures.

[0017] 3. Through the synergistic effect of insulation materials and silicon molybdenum rods, a stable constant temperature zone is ensured inside the furnace, reducing heat loss and thus lowering energy consumption.

[0018] 4. The combustible gas generated during the reaction is heated in the furnace and then burned and discharged through the combustion mechanism, thus playing a role in safety and environmental protection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the coke solubility loss measuring device of this utility model in its non-operating state; Figure 2 for Figure 1 A magnified view of part A; Figure 3 This is a front view of the coke solubility loss measuring device of this utility model in its non-operating state; Figure 4 This is a schematic diagram of the working state of the coke solubility loss measuring device of this utility model; Figure 5 This is a schematic diagram of the structure of a coke solubility loss measuring device according to the present invention; in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10 Base, 11 Furnace body support, 12 Furnace body, 121 Outer furnace shell, 122 Inner furnace shell, 123 Insulation material, 124 Furnace chamber, 13 Silicon molybdenum rod, 14 Reactor bracket, 15 Electronic balance, 16 Mounting bracket, 17 Corundum reactor, 18 Constant temperature zone, 19 Vent hole, 20 Coke sample, 21 Motor, 22 Lead screw, 23 Optical rod, 24 Moving seat, 25 Combustion chamber, 26 Exhaust fan, 27 Mounting block, 28 Center thermocouple, 29 Side wall thermocouple, 30 Movable cover, 31 Divider plate, 32 Thermocouple protective sleeve, 33 Exhaust hole, 34 Heat sink, 35 Air inlet, 36 Air inlet pipe, 37 Feed inlet. Detailed Implementation

[0020] The following are specific implementation cases and appendices. Figure 1-5 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0021] A device for measuring the solubility loss rate of coke, such as Figure 1-5 As shown, the furnace includes: a base 10, a furnace body support 11, a furnace body 12, a lifting mechanism, a reactor bracket 14, an electronic balance 15, a mounting bracket 16, a corundum reactor 17, a central thermocouple 28, a sidewall thermocouple 29, and a combustion mechanism. The furnace body support 11 is fixed to the base 10, and the furnace body 12 is fixed to the furnace body support 11. The furnace body 12 includes an outer furnace shell 121, an inner furnace shell 122, insulation material 123, a furnace chamber 124, and a silicon molybdenum rod 13. There is a gap between the inner furnace shell 122 and the outer furnace shell 121. Ventilation is provided at the bottom and top of the outer furnace shell 121. A constant temperature zone 18 is provided inside the insulation material 123, and the furnace chamber 124 and the silicon molybdenum rod 13 are both located in the constant temperature zone 18. The lifting mechanism is located on the base 10, and the reactor bracket 14 is installed on the lifting mechanism. The electronic balance 15 is located on the reactor bracket 14. The corundum reactor 17 is installed on the electronic balance 15 through the mounting bracket 16, and the corundum reactor 17 contains coke sample 20. The detection end of the temperature measuring thermocouple assembly is inserted into the corundum reactor 17 and the constant temperature zone 18 respectively. The combustion mechanism is located at the top of the furnace body 12 and is connected to the furnace chamber 124.

[0022] Using the above structure, the corundum reactor 17 is mounted on the electronic balance 15 via the mounting bracket 16, and the lifting mechanism controls the smooth rise of the corundum reactor 17 until it enters the furnace 124. The temperature of the furnace 124 is heated by the silicon molybdenum rod 13 to simulate the actual use environment of coke in a high-temperature environment, and carbon dioxide is introduced to carry out the reaction. The electronic balance 15 records the mass change of the coke sample 20 in real time during the reaction process, so as to calculate the coke loss rate and reduce measurement errors. The temperature of the inside of the corundum reactor 17 and the silicon molybdenum rod 13 is monitored in real time by the temperature measuring thermocouple assembly to ensure the uniformity and stability of the reaction temperature and improve the reliability of the experimental results. Moreover, the combustible gas generated during the reaction is heated in the furnace 124 and then burned and discharged by the combustion mechanism, thus playing a role in safety and environmental protection.

[0023] By providing a gap between the inner furnace shell 122 and the outer furnace shell 121, and by providing ventilation holes 19 at both the top and bottom of the outer furnace shell 121, during the reaction process, as the temperature of the inner furnace shell 122 rises, cold outside air enters the gap between the inner furnace shell 122 and the outer furnace shell 121 through the ventilation holes 19 at the bottom of the outer furnace shell 121, carrying away the heat of the inner furnace shell 122, and then exiting through the ventilation holes 19 at the top of the outer furnace shell 121, thereby reducing the temperature of the outer furnace shell 121 and preventing the operator from being burned by high temperatures.

[0024] Specifically, through the synergistic effect of the insulation material 123 and the silicon molybdenum rod 13, a stable constant temperature zone 18 is formed inside the furnace 124, reducing heat loss and thus reducing energy consumption.

[0025] Specifically, during the simulation experiment, the heat from the corundum reaction tube is conducted along the mounting bracket 16 to the electronic balance 15. By setting holes in the mounting bracket 16, heat dissipation is achieved, the temperature of the electronic balance 15 is reduced, and damage to the electronic balance 15 at high temperatures is prevented.

[0026] In embodiments of this utility model, such as Figure 1-5 As shown, the lifting mechanism includes: a motor 21, a lead screw 22, two guide rods 23, and a movable seat 24; the motor 21 is fixed on the base 10, the output end of the motor 21 is connected to the lead screw 22, and the lead screw 22 is located on one side of the furnace body support 11; the movable seat 24 has a threaded hole, which is threadedly engaged with the lead screw 22, and the movable seat 24 is connected to the reactor bracket 14; the two guide rods 23 are respectively located on both sides of the base 10, and one end of each guide rod 23 passes through both sides of the movable seat 24.

[0027] The motor 21 drives the lead screw 22 to rotate, causing the movable seat 24 to move up and down along the lead screw 22. The two guide rods also guide the movable seat 24 to move up and down.

[0028] In an embodiment of this utility model, the combustion mechanism includes a combustion chamber 25 and an exhaust fan 26; the combustion chamber 25 is located on the top of the outer furnace shell 121 and is connected to the constant temperature zone 18; the exhaust fan 26 is located on the furnace body support 11 and is positioned opposite to the exhaust port of the combustion chamber 25.

[0029] The coke sample 20 releases combustible gas after reacting with carbon dioxide at high temperature. The combustible gas enters the combustion chamber 25 and is burned before being discharged through the exhaust fan 26, thus achieving the purpose of treating the combustible gas before discharge and avoiding environmental pollution.

[0030] In embodiments of this utility model, such as Figure 1-4 As shown, the temperature measuring thermocouple assembly includes a central thermocouple 28 and a sidewall thermocouple 29; the probe end of the central thermocouple 28 is inserted into the corundum reactor 17; the sidewall thermocouple 29 is located on one side of the outer furnace shell 121, and is inserted into the constant temperature zone 18, with the sidewall thermocouple 29 and the silicon molybdenum rod 13 positioned opposite each other.

[0031] The temperature inside the corundum reactor 17 is measured by the central thermocouple 28, and the temperature of the silicon molybdenum rod 13 is measured by the sidewall thermocouple 29, thereby achieving the purpose of real-time monitoring of the temperature inside the corundum reactor and the silicon molybdenum rod 13, and thus ensuring temperature uniformity.

[0032] Specifically, both the sidewall thermocouple 29 and the center thermocouple 28 employ S-type platinum-rhodium thermocouples for synergistic temperature control.

[0033] In embodiments of this utility model, such as Figure 1-4 As shown, the corundum reactor 17 is provided with a movable cover 30 on top, and a partition plate 31 is provided inside the corundum reactor 17. The coke sample 20 is placed on the partition plate 31, and the detection end of the central thermocouple 28 passes through the partition plate 31.

[0034] By adding a movable cover 30 to the top of the corundum reactor 17 and setting a partition plate 31 inside the reactor, it is convenient to quickly load the coke sample 20. The partition plate 31 lifts the coke sample 20, thereby avoiding direct contact between the sample and the bottom of the reactor, and ensuring that the temperature measured by the probe end of the central thermocouple 28 is closer to the actual reaction temperature of the coke sample 20.

[0035] Specifically, by setting perforations on the partition plate 31, the probe end of the central thermocouple 28 is vertically inserted into the sample through the perforations, thereby avoiding the phenomenon of probe end displacement caused by sample accumulation or movement.

[0036] In embodiments of this utility model, such as Figure 1-2As shown, it also includes: a thermocouple protection sleeve 32; the thermocouple protection sleeve 32 is disposed outside the central thermocouple 28, and the thermocouple protection sleeve 32 is provided with an exhaust hole 33.

[0037] By installing a thermocouple protective sleeve on the outside of the central thermocouple 28, it is easy to fix the position of the central thermocouple 28. The exhaust port 33 is connected to the corundum reactor 17 so that nitrogen or carbon dioxide can be subsequently filled into the thermocouple protective sleeve 32 through the air inlet 35 and discharged into the corundum reactor 17 through the exhaust port 33 to react with the coke.

[0038] In embodiments of this utility model, such as Figure 2 As shown, it also includes: heat sink 34, air inlet 35 and air inlet pipe 36; air inlet 35 is located on one side of thermocouple protective sleeve 32, and air inlet pipe 36 is connected to air inlet 35; heat sink 34 is located on the outside of thermocouple protective sleeve 32.

[0039] By providing an air inlet 35 and an air inlet pipe 36, nitrogen or carbon dioxide can be easily introduced into the thermocouple protective sleeve through the air inlet 35 and discharged into the corundum reactor 17 through the exhaust port 33 to react with the coke. Furthermore, by providing a heat sink 34, heat is dissipated from the metal components connected near the heat sink 34 and the air inlet pipe 36, thereby reducing the temperature of the equipment during the reaction process.

[0040] In an embodiment of this utility model, the cross-section of the feed inlet 37 at the bottom of the furnace 124 is stepped; a mounting block 27 is fixed on the mounting bracket 16, and the mounting block 27 is embedded in the feed inlet 37.

[0041] During the test, due to the high internal temperature, cold air from the outside will enter the constant temperature zone 18 through the gap between the corundum reactor 17 and the furnace 124. By setting the feed port 37 at the bottom of the furnace 124 in a stepped structure, the entry of cold air can be greatly hindered, thereby improving the temperature stability of the constant temperature zone 18 and the accuracy of the test.

[0042] Specifically, heat diffusion includes heat transfer and heat radiation. The design of the stepped feed inlet 37 and the mounting block 27 will greatly block the heat radiation from the high temperature inside the furnace 124 to the vicinity of the bottom electronic balance 15, thereby protecting the balance, air inlet pipe 36 and other components that are not resistant to high temperatures.

[0043] In an embodiment of this utility model, the height of the constant temperature zone 18 is 600mm.

[0044] Implementation process: The corundum reactor 17 is mounted on an electronic balance 15 via a mounting bracket 16. The reactor 17 is raised smoothly into the furnace 124 by a lifting mechanism. The temperature of the furnace 124 is heated by a silicon molybdenum rod 13 to simulate the actual use environment of coke at high temperature. Carbon dioxide is introduced to carry out the reaction. The mass change of the coke sample 20 during the reaction is recorded in real time by the electronic balance 15 to calculate the coke loss rate and reduce measurement errors. The temperature of the inside of the corundum reactor 17 and the silicon molybdenum rod 13 is monitored in real time by a thermocouple assembly to ensure the uniformity and stability of the reaction temperature and improve the reliability of the experimental results. The combustible gas generated during the reaction is heated in the furnace 124 and then burned and discharged by a combustion mechanism, thus playing a role in safety and environmental protection.

[0045] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for determining the solubility loss rate of coke, characterized in that, include: The furnace comprises a base, a furnace support, a furnace body, a lifting mechanism, a reactor bracket, an electronic balance, a mounting bracket, a corundum reactor, a temperature-measuring thermocouple assembly, and a combustion mechanism. The furnace support is fixed to the base, and the furnace body is fixed to the furnace support. The furnace body includes an outer furnace shell, an inner furnace shell, insulation material, a furnace chamber, and a silicon molybdenum rod. There is a gap between the inner and outer furnace shells. Ventilation holes are provided at the bottom and top of the outer furnace shell. A constant temperature zone is provided within the insulation material, and the furnace chamber and silicon molybdenum rod are both located within the constant temperature zone. The lifting mechanism is located on the base, and the reactor bracket is mounted on the lifting mechanism. The electronic balance is located on the reactor bracket. The corundum reactor is mounted on the electronic balance via the mounting bracket, and coke sample is provided inside the corundum reactor. The probes of the temperature-measuring thermocouple assembly are inserted into the corundum reactor and the constant temperature zone, respectively. The combustion mechanism is located at the top of the furnace body and communicates with the furnace chamber.

2. The coke solubility loss measuring device according to claim 1, characterized in that, The lifting mechanism includes: a motor, a lead screw, two guide rods, and a movable base; the motor is fixed on the base, the output end of the motor is connected to the lead screw, and the lead screw is located on one side of the furnace body support; the movable base has a threaded hole, the threaded hole is threadedly engaged with the lead screw, and the movable base is connected to the reactor bracket; the two guide rods are respectively located on both sides of the base, and one end of each guide rod passes through both sides of the movable base.

3. The coke solubility loss measuring device according to claim 1, characterized in that, The combustion mechanism includes a combustion chamber and an exhaust fan; the combustion chamber is located on the top of the outer furnace shell and is connected to the constant temperature zone; the exhaust fan is located on the furnace body support and is positioned opposite to the exhaust port of the combustion chamber.

4. The coke melting loss rate measuring device according to claim 1, characterized in that, The temperature measuring thermocouple assembly includes a central thermocouple and a sidewall thermocouple; the probe end of the central thermocouple is inserted into the corundum reactor; the sidewall thermocouple is disposed on one side of the outer furnace shell, inserted into the constant temperature zone, and the sidewall thermocouple is positioned opposite the silicon molybdenum rod.

5. The coke solubility loss measuring device according to claim 4, characterized in that, The corundum reactor is equipped with a movable cover on top and a partition plate inside the corundum reactor. The coke sample is placed on the partition plate, and the central thermocouple probe passes through the partition plate.

6. The coke solubility loss measuring device according to claim 4, characterized in that, Also includes: Thermocouple protection sleeve; the thermocouple protection sleeve is disposed on the outside of the central thermocouple, and the thermocouple protection sleeve is provided with an exhaust hole.

7. The coke solubility loss measuring device according to claim 6, characterized in that, Also includes: Heat sink, air inlet, and air intake pipe; The air inlet is located on one side of the thermocouple protective sleeve, and the air inlet pipe is connected to the air inlet; the heat sink is located on the outside of the thermocouple protective sleeve.

8. The coke melting loss rate measuring device according to claim 1, characterized in that, The feed inlet at the bottom of the furnace has a stepped cross-section; a mounting block is fixed on the mounting frame and the mounting block is embedded in the feed inlet.

9. The coke solubility loss measuring device according to claim 1, characterized in that, The height of the constant temperature zone is 600mm.

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