Automatic coking test system

Abstract

The invention discloses an automatic coking test system. The automatic coking test system comprises a test iron box, a conveying device, a material distribution assembly, a test coke oven, a coke quenching device and a coke airing platform. The test iron box is arranged on the conveying device, the conveying device is used for conveying the test iron box to each stage of the system, the material distribution assembly, the test coke oven and the coke quenching device are located on a conveying line of the conveying device, the material distribution assembly is used for flattening coal in the test iron box, and the test iron box is arranged in the test coke oven; the test coke oven is used for coking the leveled and tamped coal in the test iron box, the coke quenching device is used for quenching high-temperature coke in the test iron box sent out from the test coke oven, the coke airing platform is located at the tail end of a conveying line of the conveying device, and the quenched coke is placed on the coke airing platform to be aired. The automatic technology is adopted, errors caused by manual operation are avoided, coking process parameters are accurately controlled, the coking test efficiency is improved, and the accuracy and reliability of the test process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal coke processing and production, and in particular to an automatic coking test system. Background Art

[0002] In the use of traditional experimental coke ovens, operations such as coal loading, heating control and coke discharge are mostly manual. Manual coal loading makes it difficult to accurately control the amount of coal and the uniformity of coal loading. For example, manual coal loading may result in inconsistent amounts of coal loaded into the coke oven each time due to differences in operators, affecting the stability of coke quality.

[0003] In terms of heating control, the traditional method is to control the heating temperature and time by manually adjusting the valve. This method not only has poor accuracy, but also makes it difficult to achieve complex heating curve control. Since the quality of coke is very sensitive to temperature changes during the heating process, the inaccuracy of manual control will lead to uneven coke quality. There are also problems in the coke removal process. The efficiency of manual coke removal is low, and the working environment is harsh. High temperature and dust are harmful to the health of operators. In addition, from the perspective of data recording and analysis, manual recording of test data is prone to errors and omissions. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] The processes of coal sample mixing, packing, tamping, furnace loading, coking test, coke removal, and coke quenching all require manual participation, and all parameters at each stage need to be monitored and recorded manually. The uniformity of coal sample mixing before packing is affected by the manual operation method and proficiency. Uneven mixing of coal samples will lead to unstable quality of coke after coking test and lack of representativeness. The control of coal sample bulk density is affected by the technical level of the tamping device and the proficiency of the operator. For the same type of coal, differences in bulk density will lead to different coke quality.

[0006] After the coking test, the red-hot coke needs to be manually removed and quenched, which poses a risk of high-temperature burns and mechanical injuries to operators and the hazard of dust inhalation. It also causes dust emissions, harmful gas emissions and thermal pollution to the environment.

[0007] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0008] To this end, an embodiment of the present invention provides an automatic coking test system, which is used to simulate and test aspects of raw coal characteristics, coal blending scheme optimization, and coking process parameter adjustment in the coke production process.

[0009] The automatic coking test system of the embodiment of the present invention includes: a test iron box, a conveying device, a material distribution assembly, a test coke oven, a coke quenching device and a coke drying platform, the test iron box has an opening, so that the coal to be tested can be placed in the test iron box through the opening, the test iron box is arranged on the conveying device, and the conveying device is used to transport the test iron box to various stages of the system, the material distribution assembly is located on the conveying route of the conveying device, and the material distribution assembly is used to level the coal that freely falls into the test iron box so that the bulk density of the coal reaches a preset value, the test coke oven is located on the conveying route of the conveying device, and the test iron box is placed in the test coke oven to coke the sorted coal in the test iron box, the coke quenching device is located on the conveying route of the conveying device, and the coke quenching device is used to quench the high-temperature coke in the test iron box sent from the test coke oven, and the coke drying platform is located at the end of the conveying route of the conveying device, so that the moisture of the coke poured from the test iron box onto the coke drying platform after quenching can be dried.

[0010] The automatic coking test system of the embodiment of the present invention adopts automation technology to avoid errors caused by human operation, improve test efficiency, and improve the reliability of test results.

[0011] In some embodiments, a feeding assembly is also included, wherein the feeding assembly includes a feeding hopper, a mixing device and a feeding device, wherein the mixing device has a feed port and a discharge port, and the feeding hopper is used to pour coal into the mixing device through the feed port, and the mixing device is connected to the test iron box through the feeding device, and the coal after being fully mixed in the mixing device enters the feeding device through the discharge port and is sent into the test iron box through the feeding device.

[0012] In some embodiments, the material distribution assembly includes a material leveling device, and the material leveling device is used to level the coal material falling into the test iron box.

[0013] In some embodiments, the material distribution assembly further includes a tamping device, which is used to tamp the leveled coal in the test iron box so that the bulk density of the coal reaches a preset value.

[0014] In some embodiments, it also includes a jacking device, which is connected to the furnace door bricks of the test coke oven. The jacking device is used to drive the furnace door bricks of the test coke oven to rise and fall, so that after the test iron box is moved onto the furnace door bricks of the test coke oven through the conveying device, the test iron box is lifted into the carbonization chamber of the test coke oven by using the jacking device.

[0015] In some embodiments, the test coke oven is pre-heated before the coking test.

[0016] In some embodiments, the experimental coke oven is provided with a raw gas outlet pipe, and the raw gas outlet pipe is used to connect to the exhaust gas purification system.

[0017] In some embodiments, the quenching device quenches coke in a spraying manner, and the quenching device extracts water vapor generated during the quenching process through an induced draft fan.

[0018] In some embodiments, a turning device is provided between the end of the conveying device and the coke drying platform, so that the extinguished coke in the test iron box can be dumped onto the coke drying platform through the turning device.

[0019] In some embodiments, a coking test control device is also included, and the coking test control device is electrically connected to each device in the system to control the operation of each device component and record the parameters of each device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of an automatic coking test system according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 1-loading hopper; 2-mixing device; 3-loading device; 4-conveying device; 5-test iron box; 6-unleveled coal; 7-leveling device; 8-leveled coal; 9-tamping device; 10-tamping hammer; 11-tamped coal; 12-lifting device; 13-furnace door brick; 14-test coke oven; 15-carbonization chamber; 16-raw gas outlet pipe; 17-high-temperature coke; 18-coke quenching device; 19-spraying module; 20-turning device; 21-coke drying platform. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] The automatic coking test system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, the automatic coking test system of the embodiment of the present invention includes: a loading assembly, a test iron box 5, a conveying device 4, a material distribution assembly, a lifting device 12, a test coke oven 14, a coke quenching device 18, a turning device 20, a coke drying platform 21 and a coking test control device (not shown in the figure).

[0026] The automatic coking test system of the embodiment of the present invention can automatically carry out the processes of mixing, packing, tamping, furnace loading, coking test, coke removal, coke quenching and coke airing of coal samples after the raw coal is prepared, and at the same time, various parameters of each stage are monitored, controlled and optimized in real time to avoid errors caused by human operation and improve the reliability of experimental data.

[0027] The feeding assembly includes a feeding hopper 1, a mixing device 2 and a feeding device 3. The mixing device 2 has a feed port and a discharge port. The feeding hopper 1 is used to pour coal into the mixing device 2 through the feed port. The mixing device 2 is connected to the test iron box 5 through the feeding device 3. The mixed coal in the mixing device 2 enters the feeding device 3 through the discharge port and is sent into the test iron box 5 through the feeding device 3.

[0028] The test iron box 5 is a box structure, and has an opening arranged upward, so that the mixed coal to be tested can be placed into the test iron box 5 through the opening. The test iron box 5 is arranged on the conveying device 4, and the conveying device 4 is used to convey the test iron box 5 to various stages of the system.

[0029] The material distribution assembly is located on the conveying route of the conveying device 4, and is used to arrange the coal in the test iron box 5 so that the bulk density of the coal reaches a preset value. For example, the material distribution assembly includes a material leveling device 7 and a tamping device 9, the material leveling device 7 is used to level the coal in the test iron box 5, and the tamping device 9 is used to tamp the leveled coal 8 in the test iron box 5 so that the bulk density of the coal reaches a preset value.

[0030] The test coke oven 14 is located on the conveying route of the conveying device 4. The jacking device 12 is connected to the furnace door bricks 13 of the test coke oven 14. The jacking device 12 is used to drive the furnace door bricks 13 of the test coke oven 14 to rise and fall, so that the test iron box 5 is moved to the furnace door bricks 13 of the test coke oven 14 through the conveying device 4, and then the test iron box 5 is lifted into the carbonization chamber 15 of the test coke oven 14 by the jacking device 12 to coke the sorted coal in the test iron box 5.

[0031] The coke quenching device 18 is located on the conveying route of the conveying device 4 , and is used to quench the high-temperature coke 17 in the test iron box 5 delivered from the test coke oven 14 .

[0032] The coke drying platform 21 is located at the end of the conveying route of the conveying device 4, and the turning device 20 is located between the end of the conveying device 4 and the coke drying platform 21, so that the extinguished coke in the test iron box 5 can be dumped onto the coke drying platform 21 through the turning device 20.

[0033] The coking test control device is electrically connected to each device in the system to control the operation of each device component and record the parameters of each device.

[0034] Therefore, the automatic coking test system of the embodiment of the present invention adopts automation technology to avoid errors caused by human operation, improve test efficiency, and improve the reliability of test results.

[0035] The process of the automatic coking test system according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Raw material preparation stage:

[0037] First, suitable coking coal is selected as raw material. According to the purpose of the coking test and a certain coal blending plan, different types of coal are crushed and screened, and the fineness and moisture of the coal meet the coking test requirements in the coke oven. The crushed coal with moisture content that meets the coking test requirements is poured into the mixing device 2 using the upper hopper 1, and the coking test process is automatically completed.

[0038] Raw material mixing stage:

[0039] The coal prepared according to the coal blending scheme is automatically and fully mixed in the mixing device 2 to make the coal composition uniform. The stirring time and intensity are determined according to the properties and total amount of the coal to ensure that the mixed coal can be evenly heated and reacted in the subsequent coking process.

[0040] The stirring tank (or mixing box) is the main part of the mixing device 2, which is usually made of stainless steel, carbon steel or other corrosion-resistant materials. The tank design may be cylindrical or customized into other shapes as needed. The agitator is located inside the stirring tank and is responsible for the actual stirring work. Depending on the stirring requirements, the agitator may be a single-layer or multi-layer structure with different stirring blade designs, such as anchor type, paddle type, spiral blade type, etc. The agitator is connected to the drive member through a stirring shaft. The stirring shaft is the support and transmission component of the agitator. It passes through the bearing at the top of the stirring tank and transmits power to the agitator. The stirring shaft is usually made of high-strength, wear-resistant materials. The drive member usually includes a motor and a reducer to drive the stirring shaft to rotate.

[0041] Automatic feeding stage:

[0042] The fully mixed coal is discharged from the discharge port at the bottom of the mixing device 2 and fed into the test iron box 5 by the feeding device 3 (screw conveyor, bucket elevator, etc.). At this time, the coal is stacked freely and loosely in the container, and is uneven coal 6.

[0043] Coal leveling stage:

[0044] After the coal falls into the test iron box 5, the conveying device 4 adopts a heat-resistant steel plate conveyor, etc., which can subsequently withstand the high-temperature coke 17 sent out from the test coke oven 14. The conveying device 4 automatically starts to run. During the operation, the leveling device 7 above the test iron box 5 uses a scraper to level the coal in the test iron box 5, so that the upper surface of the coal is evenly distributed, which is the leveled coal 8, avoiding local accumulation or gaps in the coal.

[0045] Coal tamping stage:

[0046] After the upper surface of the coal in the test iron box 5 is leveled by the leveling device 7, the test iron box 5 automatically moves to the bottom of the tamping device 9. Under the action of the tamping hammer 10, the bulk density of the leveled coal in the test iron box 5 reaches the requirements of the coking test, which is the tamped coal 11.

[0047] The coal bulk density control can realize accurate control of the coal bulk density during the tamping process through automatic control of the tamping device 9. After the tamping process is completed, no manual measurement or calculation is required, which improves the accuracy of the operation process and reduces the manual operation and human errors.

[0048] Coal charging stage:

[0049] The rammed coal 11 is driven by the conveying device 4 and enters the furnace door brick 13 below the test coke oven 14. The conveying device 4 stops running, and the jacking device 12 lifts the test iron box 5 into the carbonization chamber 15 of the test coke oven 14, and the coking test program is started to start the coking test.

[0050] The temperature of the carbonization chamber 15 of the test coke oven 14 is pre-heated to the required temperature before the coking test is carried out to meet the conditions for loading the furnace with coal and carrying out the coking test.

[0051] Coal material during coking in the test coke oven 14:

[0052] The coal is in the test iron box 5, and the test iron box 5 is coked at high temperature in the carbonization chamber 15 of the test coke oven 14. During the entire coking process, the temperature sensor monitors the temperature in the carbonization chamber 15 in real time and feeds back the data to the coking test control device. The coking test control device corrects the deviation of the temperature control parameters in time according to the feedback data to ensure that the coking process is carried out strictly according to the set temperature curve.

[0053] The test coke oven 14 that automatically completes the coking process is equipped with a high-precision temperature sensor, whose measurement error can be controlled within ±1°C, and can monitor the temperature change in the carbonization chamber 15 in real time and accurately. Combined with the coking test control device, heating is carried out strictly according to the preset coking temperature rise curve. For example, in the critical middle coking period, the temperature fluctuation range is extremely small, ensuring the quality stability of the coke and making the maturity consistency of the coke high, which is conducive to the subsequent accurate comparison of the performance of different batches of coke.

[0054] In addition, the experimental coke oven 14 adopts heat storage combustion technology or intelligent variable frequency heating technology, which can accurately adjust the energy input according to the needs of the coking stage, thereby increasing the energy utilization rate by 20% to 30%. Compared with traditional coke ovens, it greatly reduces electricity or gas consumption.

[0055] The raw gas generated during the coking process enters the tail gas purification system through the raw gas outlet pipe 16, and the removal rate of pollutants such as tar, hydrogen sulfide, benzene compounds in the raw gas is as high as over 90%, achieving standard exhaust gas emissions and reducing pollution to the surrounding environment.

[0056] Defocusing stage:

[0057] When the coking process is completed, the coking program automatically stops. The coking program starts, the lifting device 12 descends, and the high-temperature test iron box 5 comes out of the furnace. The test iron box 5 enters the coke quenching device 18 through the conveying device 4. After the test iron box 5 leaves the test coke oven 14, the furnace door brick 13 automatically closes with the test coke oven 14 under the action of the lifting device 12, and the insulation is started to prepare for the next coking test.

[0058] Extinguishing stage:

[0059] After the test iron box 5 and the high-temperature coke 17 just out of the furnace enter the quenching device 18, the conveying device 4 stops running, the spray module 19 automatically starts, and the water quenching method is used for quenching. The amount of water used for quenching can be adjusted and controlled. The water vapor generated during the quenching process is extracted by the induced draft fan.

[0060] Drying stage:

[0061] After quenching, the test iron box 5 is driven by the conveying device 4 to enter the turning device 20. The turning device 20 turns the test iron box 5 over so that the quenched coke is poured onto the coke drying platform 21. The concentrated coke is evenly spread out manually to form a single-layer coke layer.

[0062] The coke is spread out and cooled by natural ventilation on the coke drying platform 21. The coke drying platform 21 is an open space with no obvious shielding around it, ensuring that the air can circulate smoothly. During this process, the air continuously takes away the heat of the coke, causing the coke temperature to gradually decrease. The natural coke drying time lasts for several hours, and the staff can then conduct project measurements on the coke.

[0063] In summary, the automatic coking test system of the embodiment of the present invention automatically completes the processes of coal sample mixing, tamping, furnace loading, coking, coking, coking, coking quenching and coke drying. Compared with the traditional manual coking test method, the coal sample mixing is more uniform, the sample loading process is more environmentally friendly, the tamping process is more precise, the furnace loading and coking processes are safer, and the coking process is more environmentally friendly. It avoids the errors that may be caused by manual operation and the possible harm to human body caused by high temperature during operation, and at the same time greatly speeds up the test process and improves the turnover utilization rate of equipment.

[0064] During the entire automatic coking test process, the coking test control device will record various parameters, such as temperature, time, charge amount, coke output, etc. These data can be used to analyze the quality and efficiency of the coking process, and provide a basis for optimizing the coking process through statistics and analysis of the data.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An automatic coking test system, characterized in that: include: A test iron box, wherein the test iron box has an opening, so that the coal to be tested is placed into the test iron box through the opening; A conveying device, on which the test iron box is arranged, and the conveying device is used to convey the test iron box to various stages of the system; A material distribution assembly, the material distribution assembly is located on the conveying route of the conveying device, and the material distribution assembly is used to level the coal material that freely falls into the test iron box so that the bulk density of the coal material reaches a preset value; A test coke oven, the test coke oven is located on the conveying route of the conveying device, and the test iron box is placed in the test coke oven to coke the coal material arranged in the test iron box; A coke quenching device, the coke quenching device is located on the conveying route of the conveying device, and the coke quenching device is used to quench the high-temperature coke in the test iron box sent from the test coke oven; The coke drying platform is located at the end of the conveying route of the conveying device so that the moisture of the extinguished coke poured from the test iron box onto the coke drying platform can be dried.

2. The automatic coking test system according to claim 1, characterized in that: It also includes a feeding component, which includes a feeding hopper, a mixing device and a feeding device. The mixing device has a feed port and a discharge port. The feeding hopper is used to pour coal into the mixing device through the feed port. The mixing device is connected to the test iron box through the feeding device. The coal after being fully mixed in the mixing device enters the feeding device through the discharge port and is sent into the test iron box through the feeding device.

3. The automatic coking test system according to claim 1, characterized in that: The material distribution assembly includes a material leveling device, and the material leveling device is used to level the coal material falling into the test iron box.

4. The automatic coking test system according to claim 3, characterized in that: The material distribution assembly also includes a tamping device, which is used to tamp the leveled coal in the test iron box so that the bulk density of the coal reaches a preset value.

5. The automatic coking test system according to claim 1, characterized in that: It also includes a jacking device, which is connected to the furnace door bricks of the test coke oven. The jacking device is used to drive the furnace door bricks of the test coke oven to rise and fall, so that after the test iron box is moved onto the furnace door bricks of the test coke oven through the conveying device, the test iron box is lifted into the carbonization chamber of the test coke oven by using the jacking device.

6. The automatic coking test system according to claim 5, characterized in that: The test coke oven is preheated before the coking test.

7. The automatic coking test system according to claim 5, characterized in that: The test coke oven is provided with a raw gas outlet pipe, and the raw gas outlet pipe is used to connect to the tail gas purification system.

8. The automatic coking test system according to claim 1, characterized in that: The coke quenching device adopts a spraying method to quench coke, and the coke quenching device extracts the water vapor generated during the coke quenching process through an induced draft fan.

9. The automatic coking test system according to claim 1, characterized in that: A turning device is provided between the end of the conveying device and the coke drying platform, so that the extinguished coke in the test iron box can be dumped onto the coke drying platform through the turning device.

10. The automatic coking test system according to any one of claims 1 to 9, characterized in that: It also includes a coking test control device, which is electrically connected to each device in the system to control the operation of each device component and record the parameters of each device.

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