Equipment for preparing multiple briquettes and multiple cokes and preparation method of multiple cokes

Abstract

The invention relates to the technical field of briquette preparation and coking, and discloses equipment for preparing multiple briquettes and multiple cokes and a multiple-coke preparation method.The device comprises a coaling assembly and a processing assembly.The coaling assembly comprises a coaling frame, and an upper-layer platform, a middle platform and a lower-layer platform are fixedly connected into the coaling frame; the upper-layer platform is fixedly connected with an upper lifting pressure assembly, the middle platform is detachably connected with a carbonization chamber main body, the carbonization chamber main body penetrates through the middle platform, the lower-layer platform is fixedly connected with a lower pressure assembly, and a coaling cup is arranged above the lower pressure assembly and located in the carbonization chamber main body; the treatment assembly comprises a carbonization assembly detachably connected with the carbonization chamber main body and a heating furnace assembly matched with the carbonization chamber main body. The invention has the advantages of simple equipment, less coal consumption, low energy consumption and short time consumption. The refined small coke blocks can be directly used for measuring the thermal intensity CSR and CRI of coke, and the humanity is obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of coal cake preparation and coking technology, and in particular to an equipment and method for preparing multiple coal cakes and multiple coke blocks. Background Technology

[0002] Reactivity (CRI) and post-reaction strength (CSR) are two important coke quality indicators. Ash content (A) and sulfur content (S) are also important coke quality indicators. The ash and sulfur content of coke is highly correlated with the ash and sulfur content of each coal type in the blend. Although some calculation models are complex, the ash and sulfur content of the produced coke can be predicted relatively accurately based on the ash and sulfur content of the blend and the sulfur distribution coefficient. However, current predictions of the reactivity CRI and post-reaction strength CSR of coke produced from blended coal, despite incorporating multiple caking and coking property evaluation indicators of coking coal (such as coal caking index G, plastic layer index Y, Gibbs freeness αmax, and Oya expansion b), and utilizing micro-component pyrolysis coking data and ash catalytic index MCI, have proposed coking theoretical mechanisms including plastic coking, mesophase, and free radicals, and employed various AI technologies such as artificial intelligence and neural networks. However, due to the problem of "same caking indicators, different coking quality," the "interaction" mechanism of different coal types during the coking process remains unclear. Currently, the prediction errors for the reactivity CRI and post-reaction strength CSR of coal fed into the furnace are still relatively large, and there is no accurate method for predicting the reactivity CRI and post-reaction strength CSR of blended coal coking. The blending scheme for industrial coal fed into the furnace still needs to be verified and determined through small-scale coking. Research on the coking characteristics of blended coal also begins with small-scale coking. Therefore, small-scale multi-piece coking has become an important technology in the coking industry. Research on coal quality and blending requires the production of multiple coke samples in small coke ovens to determine the coke's thermal reactivity (CRI) and post-reaction strength (CSR). However, existing small coke ovens (10kg-300kg) have several problems: 1. They are complex in structure, consume large amounts of coal, have high energy consumption, and involve complex and time-consuming processes; 2. Coke produced by existing small coke ovens cannot be directly used for the determination of coke thermal strength (CSR) and CRI, and the process of producing coke samples for thermal strength determination is significantly human-intensive; 3. Existing small coke ovens have complex systems for handling raw coal gas and lack purification systems; 4. Equipment for producing kilogram-scale coke in small coke ovens equipped with dry quenching facilities is complex and cumbersome to operate; 5. The post-reaction strength (CSR) of coke produced by kilogram-scale small coke ovens often has a large error compared to the CSR of coke produced by industrial coke ovens.

[0003] To address this, an equipment and method for producing multiple coal cakes and multiple coke blocks are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide equipment and method for making multiple coal cakes and multiple coke blocks, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides equipment for making multiple coal cakes and multiple coke blocks, including... A coal charging assembly includes a coal charging frame, an upper platform, a middle platform, and a lower platform fixedly connected within the coal charging frame. An upper lifting pressure assembly is fixedly connected to the upper platform. A carbonization chamber body is detachably connected to the middle platform, and the carbonization chamber body extends through the middle platform. A lower pressure assembly is fixedly connected to the lower platform, and a coal charging cup is located above the lower pressure assembly within the carbonization chamber body. The processing assembly includes a carbonization component detachably connected to the carbonization chamber body and a heating furnace assembly adapted to the carbonization chamber body.

[0006] Preferably, the upper lifting pressure assembly includes an upper lifting pressure rod that passes through the upper platform and is slidably connected to the upper platform. A coal pressing head is fixedly connected to the bottom end of the upper lifting pressure rod. A partition strip gap adapted to the coal charging cup is provided at the bottom of the coal pressing head. An upper lifting press machine for controlling the up and down movement of the upper lifting pressure rod is fixedly connected to the upper platform.

[0007] Preferably, the intermediate platform has an opening adapted to the main body of the carbonization chamber, and a fixing clip is installed on the intermediate platform, the fixing clip being located around the opening.

[0008] Preferably, the lower pressure assembly includes a lower lifting pressure rod that passes through the lower platform and is slidably connected to the lower platform. A bottom pressure plate is fixedly connected to the top of the lower lifting pressure rod. The coal charging cup is located above the bottom pressure plate. The bottom pressure plate is adapted to the main body of the carbonization chamber. A lower lifting press that controls the up and down movement of the lower lifting pressure rod is fixedly connected to the lower platform.

[0009] Preferably, the coal charging cup includes a bottom, a side wall, and an inner dividing strip. The inner dividing strip divides the area above the bottom of the coal charging cup into multiple coal charging compartments. The inner dividing strip is configured to correspond to the dividing strip gap of the coal pressing head. The coal charging cup is made of paper or metal steel plate.

[0010] Preferably, the volume of each coal charging compartment is 3 cm³. 3 ~27cm 3 The coal loading grid is in the shape of a square grid adapted to a rectangular carbonization chamber or a fan-shaped column adapted to a cylindrical carbonization chamber.

[0011] Preferably, the carbonization assembly includes a movable top cover and a movable bottom cover that are detachably connected to the main body of the carbonization chamber. The movable top cover is provided with a pyrolysis gas pipe, a coal pressing sleeve, a carbonization chamber top thermocouple tube, and a dry quenching gas N2 inlet pipe. A coal pressing rod is provided inside the coal pressing sleeve. A weight block is provided at the top of the coal pressing rod, and a coal pressing plate is fixedly connected to the bottom of the coal pressing rod.

[0012] Preferably, the heating furnace assembly includes a heating furnace body, which, from the outside in, consists of a metal plate shell, a heat insulation layer, a high-temperature resistant heat insulation layer, and a furnace chamber. The size of the furnace chamber is not less than the size of the carbonization chamber body. The top of the heating furnace body is equipped with a furnace cover with a rotary switch. The furnace cover has through holes corresponding to the pyrolysis gas pipe, the coal pressing sleeve, the thermocouple tube at the top of the carbonization chamber, and the dry quenching gas N2 inlet pipe. A heating element is provided in the middle of the heating furnace body. A combustion chamber and a purification chamber are provided inside the heating furnace body. The combustion chamber has a pyrolysis gas inlet and an air inlet. The combustion chamber is located below the heating element, and the purification chamber is located below the combustion chamber. A pyrolysis gas pipe connects the combustion chamber and the purification chamber. A purified gas outlet is provided on the side of the purification chamber.

[0013] A method for producing multiple coal briquettes and multiple coke blocks includes the following steps: Step 1: Separate and press the coal; Step 1.1: Install the main body of the carbonization chamber inside the coal charging assembly and install the coal charging cup; Step 1.2: Adjust the position of the coal charging cup and charge the coal; Step 1.3: Press the coal until 3-4 layers of coal samples are loaded; Step two, carbonize the coal; Step 2.1: Remove the main body of the carbonization chamber containing the compressed coal sample from Step 1, and install the carbonization components. Step 2.2: Carbonize the coal sample into coke.

[0014] The pyrolysis gas generated during carbonization is completely burned in the incineration chamber. After combustion, the exhaust gas is purified in the purification chamber and then discharged from the purification chamber outlet.

[0015] Step 3: After opening the nitrogen valve to circulate nitrogen for cooling and coke quenching, open the heating furnace assembly to remove the main body of the carbonization chamber and obtain coke blocks.

[0016] The present invention discloses the following technical effects: This invention leverages the property of non-adhesive paper or metal plates to prevent the diffusion and adhesion of colloidal substances. It develops a multi-compartment coal charging cup with paper trays and metal cups for separation. Using these charging cups, multiple coal cakes can be produced simultaneously in a single carbonization chamber. These multiple coal cakes are then simultaneously carbonized to produce several small coke pieces. The size, shape, and weight of these small coke pieces can be predicted and determined by the size and shape of the charging cups. A combustion chamber and a purification chamber are added below the intermediate heating element. The intermediate heating element heats upwards unidirectionally to complete coal carbonization and downwards to raise the temperature of the combustion chamber. At high temperatures, the gas generated in the main body of the carbonization chamber undergoes catalytic combustion, further purification such as desulfurization, solving the complex problem of raw gas treatment in existing small coke ovens. The main body of the carbonization chamber allows multiple small coal cakes to complete carbonization and dry quenching in the same chamber, solving the problem of wet quenching affecting coke quality in existing small coke oven technologies.

[0017] This invention features simple equipment, low coal consumption, low energy consumption, and short processing time. The refined small coke blocks can be directly used for the determination of coke thermal strength (CSR) and coke calorific value (CRI), significantly reducing human intervention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the coal loading assembly structure of the present invention; Figure 2 This is a schematic diagram of the processing component structure of the present invention; Figure 3 This is a schematic diagram of the carbonization component structure of the present invention; Figure 4 This is a schematic diagram of the coal charging cup structure of the present invention; The components are as follows: 1. Coal charging frame; 2. Upper platform; 3. Middle platform; 4. Lower platform; 5. Carbonization chamber main body; 6. Coal charging cup; 7. Upper lifting pressure rod; 8. Coal pressing head; 9. Upper lifting pressure machine; 10. Fixing clip; 11. Lower lifting pressure rod; 12. Bottom pressure plate; 13. Lower lifting pressure machine; 14. Movable top cover; 15. Movable bottom cover; 16. Pyrolysis gas pipe; 17. Coal pressing sleeve; 18. Carbonization chamber top thermocouple tube; 19. Dry quenching gas N2 inlet pipe; 20. Coal pressing rod; 21. Pressing weight; 22. Coal pressing plate; 23. Heating furnace main body; 24. Furnace cover; 25. Pyrolysis gas pipe; 26. Purified gas outlet; 27. Heating element. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-4 This invention provides equipment for making multiple coal cakes and multiple coke blocks, including... The coal loading assembly includes a coal loading frame 1, an upper platform 2, a middle platform 3 and a lower platform 4 are fixedly connected inside the coal loading frame 1, an upper lifting pressure assembly is fixedly connected to the upper platform 2, a carbonization chamber body 5 is detachably connected to the middle platform 3, the carbonization chamber body 5 is set through the middle platform 3, a lower pressure assembly is fixedly connected to the lower platform 4, a coal loading cup 6 is set above the lower pressure assembly, and the coal loading cup 6 is located inside the carbonization chamber body 5; The processing assembly includes a carbonization component detachably connected to the carbonization chamber body 5 and a heating furnace assembly adapted to the carbonization chamber body 5.

[0023] The scheme is further optimized. The upper lifting pressure component includes an upper lifting pressure rod 7 that runs through the upper platform 2 and is slidably connected to the upper platform 2. A coal pressing head 8 is fixedly connected to the bottom end of the upper lifting pressure rod 7. A partition strip gap adapted to the coal loading cup 6 is provided at the bottom of the coal pressing head 8. An upper lifting press 9 that controls the up and down movement of the upper lifting pressure rod 7 is fixedly connected to the upper platform 2.

[0024] The design is further optimized by providing an opening in the intermediate platform 3 that is compatible with the carbonization chamber body 5. A fixing clip 10 is installed on the intermediate platform 3, and the fixing clip 10 is located around the opening.

[0025] The scheme is further optimized. The lower pressure component includes a lower lifting pressure rod 11 that runs through the lower platform 4 and is slidably connected to the lower platform 4. A bottom pressure plate 12 is fixedly connected to the top of the lower lifting pressure rod 11. The coal charging cup 6 is located above the bottom pressure plate 12. The bottom pressure plate 12 is adapted to the carbonization chamber body 5. A lower lifting pressure machine 13 that controls the up and down movement of the lower lifting pressure rod 11 is fixedly connected to the lower platform 4.

[0026] Furthermore, pressure display screens are installed on the upper lifting press 9 and the lower lifting press, and scales are set on the upper lifting pressure rod 7 and the lower lifting pressure rod 11.

[0027] Furthermore, the upper lifting press 9 and the lower lifting press are hydraulic lifting presses.

[0028] The design is further optimized. The coal charging cup 6 includes a bottom, a side wall, and an inner dividing strip. The inner dividing strip divides the area above the bottom of the coal charging cup into multiple coal charging compartments. The gaps between the inner dividing strip and the dividing strip of the coal pressing head 8 are set accordingly. The coal charging cup 6 is made of paper or metal steel plate.

[0029] The design was further optimized, with each coal loading compartment having a volume of 3 cm³. 3 ~27cm 3 The coal charging grid is either square or fan-shaped, which is compatible with rectangular carbonization chambers.

[0030] Furthermore, the coal charging cup 9 is made of low-ash or ashless paper or metal plate.

[0031] The scheme is further optimized. The carbonization component includes a movable top cover 14 and a movable bottom cover 15 that are detachably connected to the main body 5 of the carbonization chamber. The movable top cover 14 is equipped with a pyrolysis gas pipe 16, a coal pressing sleeve 17, a carbonization chamber top thermocouple tube 18, and a dry quenching gas N2 inlet pipe 19. A coal pressing rod 20 is installed inside the coal pressing sleeve 17. A weight block 21 is installed at the top of the coal pressing rod 20, and a coal pressing plate 22 is fixedly connected to the bottom of the coal pressing rod 20.

[0032] Furthermore, the movable top cover 14 and movable bottom cover 15 support the flange-type cover body, the flange edge has a sealing gasket groove, the top of the coal pressing sleeve rod is provided with a sealing gasket groove, a sealing gasket and a hollow sealing nut.

[0033] A heating control system is installed inside the main body 5 of the carbonization chamber.

[0034] The design is further optimized. The heating furnace assembly includes a heating furnace body 23. From the outside in, the heating furnace body 23 consists of a metal plate shell, an insulation layer, a high-temperature resistant insulation layer, and a furnace chamber. The size of the furnace chamber is not less than the size of the carbonization chamber body 5. A furnace cover 24 with a rotary switch is provided on the top of the heating furnace body 23. Through holes are provided on the furnace cover 24 corresponding to the pyrolysis gas pipe 16, the coal pressing sleeve 17, the thermocouple tube 18 on the top of the carbonization chamber, and the dry quenching gas N2 inlet pipe 19. A heating element 27 is provided in the middle of the heating furnace body 23. A combustion chamber and a purification chamber are provided inside the heating furnace body 23. The combustion chamber is provided with a pyrolysis gas inlet and an air inlet. The combustion chamber is located below the heating element 27, and the purification chamber is located below the combustion chamber. A pyrolysis gas pipe 25 connects the combustion chamber and the purification chamber. A purification gas outlet 26 is provided on the side of the purification chamber.

[0035] Furthermore, the furnace cover 24 is composed of two symmetrical pieces, one of which is rotatably connected to the furnace body 23.

[0036] Furthermore, a thermocouple hole is provided inside the heating furnace body 23, an insulating cover is provided on the outside of the heating element 27, a power cord hole is provided below the heating element 27, and the heating element 27 supplies heat upwards, forming a unidirectional heating of the coal in the carbonization chamber body 5.

[0037] Furthermore, the central heating element 27 supplies heat to the lower part, so that the temperature of the pyrolysis gas combustion chamber below reaches the auto-ignition temperature of the pyrolysis gas, and it is auto-ignited and burned. The combustion gas enters the purification chamber through the pyrolysis gas pipe 25 for purification, and the purified gas is discharged through the purified gas outlet 26.

[0038] Furthermore, the incineration chamber is filled with a copper-based oxidation catalyst, and the purification chamber is filled with a desulfurization catalyst.

[0039] The equipment and its supporting equipment of this invention have a simple structure and low manufacturing cost; Compared to the existing 200kg small coke oven with a coal loading capacity of 230kg (dry basis), heating power of 120kW, and coking time of 16-20h, this equipment uses 100-400g of coal, has a heating power of 1.6-5.0kw, and a coking time of 1-1.7h. It uses less coal, has lower energy consumption, and takes less time.

[0040] A 200kg small coke oven requires 3-5 operators and consumes an average of 72 person-hours. The equipment of this invention requires only 1 operator and consumes an average of 6 person-hours. This results in lower personnel costs.

[0041] This invention produces 27-36 small coke blocks of approximately equal size, shape, mass, and weight in a single furnace operation. These small coke blocks meet the requirements of national standards GB / T4085 and MT / T053-2008 and can be directly used for the determination of reactivity CRI and post-reaction strength CSR. This eliminates the need for existing methods in small coke ovens (10-400 kg) to manually or mechanically crush these large coke blocks into approximately 23-25 ​​mm spherical particles, each weighing about 6-8 g, before sample preparation for thermal strength determination. This technology significantly simplifies the sample preparation process and eliminates human intervention.

[0042] This invention adds a combustion chamber and a purification chamber below the intermediate heating element 27. This not only solves the complex problem of treating raw gas from existing small coke ovens, but also offers significant environmental advantages. For example, in completing the CRI and CSR measurements of a single sample, a 40kg small coke oven emitted 106 m³ of combustion gas, while this technology only emits 0.58 m³.

[0043] This mobile pressurized carbonization chamber allows multiple small coal cakes to be carbonized and dry-quenched in the same chamber, solving the problem of wet quenching affecting coke quality in existing small coke oven technology.

[0044] Through multiple coking tests conducted in a 40kg small coke oven, the CSR (Coking Strength Ratio) of the coke produced under optimized operating conditions and the CSR of industrial coke oven coke are shown in the table above for the 40kg small coke oven section. Compared with the CSR data of coke produced in this technology, the absolute error in the post-reaction strength of coke produced using top-charged coal in this technology is [not specified]. The CSR is only 2.34, with a percentage error of 3.13%, while the average absolute error of the strength of tamped coke blocks produced in existing 40kg small coke ovens after reaction is much higher. The CSR is 9.6, with an average percentage error of 13.73%. The data indicates that the CSR measured using this technology for producing small coke blocks is closer to the CSR data measured for industrial furnace coke.

[0045] A method for producing multiple coal briquettes and multiple coke blocks includes the following steps: Step 1: Separate and press the coal; Step 1.1: Install the carbonization chamber body 5 inside the coal charging assembly and install the coal charging cup 6; install the carbonization chamber body 5 at the opening of the intermediate platform 3, use the fixing clip 10 for limiting, put the coal charging cup 6 into the carbonization chamber body 5, so that the upper part of the coal charging cup 6 sinks into the carbonization chamber and is lower than the top surface of the carbonization chamber body 5. Step 1.2: Adjust the position of the coal loading cup 6 and load coal; start the lower lifting pressure machine 13, drive the bottom pressure plate 12 to move, and then lift the coal loading cup 6 so that the upper surface of the coal loading cup 6 is flush with the upper surface of the carbonization chamber body 5. Step 1.3: Press the coal until 3-4 layers of coal sample are filled; put the coal sample into the coal filling cup 6, the filling height is 1 / 3 of the coal filling cup 6, start the upper lifting pressure machine 9 to press the coal, observe the pressure machine display screen, when the pressure reaches the specified requirement, stop pressurizing, then lift the coal pressing head 8, and then repeat the coal filling, the filling height is 1 / 3-1 / 2 of the coal filling cup 6, press the coal until one layer of coal filling cup 6 is filled; Start the lower lifting pressure machine 13, and lower the lower lifting pressure rod 11 by 20mm, which is the height of one layer of coal cup 6. Then use the upper lifting pressure machine 9 to press down the coal cup 6 filled with coal, and put in the empty coal cup 6 to load the second layer of coal, until 3 to 4 layers of coal samples are loaded. Step two, carbonize the coal; Step 2.1: Take out the carbonization chamber body 5 containing the coal sample pressed in Step 1, and install the carbonization components; Take out the carbonization chamber body 5 containing the coal sample, place the coal pressing plate 22 on the upper layer, install the movable top cover 14 and movable bottom cover 15 on the carbonization chamber body 5, place it into the heating furnace body 23, add the weight block 21, insert the thermocouple into the thermocouple tube at the top of the carbonization chamber body 5, connect the heat exhaust gas pipe 16 of the movable top cover 14 to the lower pyrolysis gas inlet, connect the dry quenching gas N2 inlet pipe 19 to nitrogen, close it during carbonization and open it during coke quenching, connect the air inlet to the air pump, and close the furnace cover 24; Step 2.2: Carbonize the coal sample into coke.

[0046] The pyrolysis gas generated during carbonization is completely burned in the incineration chamber. After combustion, the exhaust gas is purified in the purification chamber and then discharged from the purification chamber outlet.

[0047] a. Rapidly heat up to 500℃ in the lower layer of the carbonization chamber body 5, with a heating time of 10-20 minutes; b. After the temperature of the lower layer of the carbonization chamber body 5 reaches 500℃, the heating rate of the lower layer of the carbonization chamber body 5 is increased at 5℃~15℃ / minute until the temperature of the lower layer of the carbonization chamber body 5 reaches 1100±50℃, and then the lower layer of the carbonization chamber body 5 is controlled to enter a constant temperature state. c. When the temperature of the upper layer of the carbonization chamber reaches 950℃, continue to maintain the temperature for 20-40 minutes.

[0048] d. After the constant temperature period is over, open the nitrogen valve to introduce nitrogen into the carbonization chamber body 5 until the temperature reaches room temperature.

[0049] Step 3: After opening the nitrogen valve to allow nitrogen to cool and extinguish the coke, open the heating furnace assembly and remove the carbonization chamber body 5. Open the carbonization chamber body 5 to obtain coke blocks. Open the furnace cover 24 on top of the heating furnace body 23, disconnect the pyrolysis gas connection pipe, disconnect the nitrogen connection pipe, remove the carbonization chamber body 5, open the bottom cover of the carbonization chamber body 5, and pour out the coke blocks.

[0050] In a specific embodiment Coal quality fed into the furnace, coal charging cup and coal charging The quality of coal fed into the furnace is shown in the table below.

[0051] The coal charging cup 6 is a paper cup with dimensions of 23mm (length) × 23mm (width) × 20mm (height). Weigh three coal samples, each weighing 100g. Place the main body 5 of the carbonization chamber in the middle of the coal charger and secure it with the carbonization chamber fixing clip 10. Place the coal charging cup 6 into the carbonization chamber, ensuring that the upper part of the coal charging cup 6 is submerged below the upper surface of the main body 5. Activate the lower lifting pressure machine 13 to lift the coal charging cup 6, making the upper surface of the coal charging cup 6 flush with the upper surface of the main body 5. Fill the coal charging cup 6 with the coal sample, filling it to approximately 1 / 3 of its height. Activate the upper lifting pressure machine 9 to press the coal. Observe the pressure machine display screen. When the pressure reaches 0.4MPa, stop pressurizing and raise the upper coal head 8. Repeat the above two steps until the coal charging cup 6 is filled with coal. Start the lower lifting pressure machine 13, observe the pressure bar scale and lower the lower bottom pressure plate 12 by 22mm, which is the height of the first layer of coal loading cup 6; start the upper lifting pressure machine 9, press down the coal loading cup 6 filled with coal, so that the distance between the upper surface of the coal and the upper plane of the carbonization chamber is the height of the coal loading cup 6; raise the upper pressing coal head 8, put the empty coal loading cup 6 into the carbonization chamber for the second layer of coal loading; repeat the first layer steps until 3-4 layers of coal samples are loaded.

[0052] The carbonization chamber was moved into the furnace chamber of the heating furnace. Remove the carbonization chamber containing the coal sample from the coal charger and place the coal pressing plate 22 on the upper layer. Install the movable top cover 14 and movable bottom cover 15 of the carbonization chamber, place it in the furnace, add the weight block 21, insert the thermocouple into the thermocouple tube 18 on the top of the carbonization chamber, connect the pyrolysis gas pipe 16 of the top cover to the pyrolysis gas inlet of the lower combustion chamber and purification chamber, connect the dry quenching gas N2 inlet pipe 19 to nitrogen, close it during carbonization and open it during coke quenching, connect the air port of the lower combustion chamber to the purification chamber to the air pump, close the furnace cover 24, and start the programmed temperature rise carbonization.

[0053] Coking heating operation The integrated heating furnace is heated rapidly to 500℃, at which point the heating rate is adjusted to 12℃ / min. When the bottom temperature of the carbonization chamber body 5 reaches 800℃, the center temperature of the upper layer of coke cake in the upper part of the carbonization chamber body 5 reaches 500℃. When the bottom temperature of the carbonization chamber body 5 reaches 1100℃, the center temperature of the coke cake reaches 980℃. After maintaining this temperature for 40 minutes, heating is stopped, and nitrogen is introduced through the nitrogen valve until the temperature of the carbonization chamber body 5 returns to room temperature.

[0054] Burning After cooling, open the main body 23 of the heating furnace, disconnect the pyrolysis gas connection pipe and the nitrogen connection pipe, remove the main body 5 of the carbonization chamber from the furnace, open the movable bottom cover 15 of the main body 5 of the carbonization chamber and pour out the coke.

[0055] Coking situation The appearance of the coke after it exits the furnace is as follows: small coke lumps after slag removal; each of the six compartments in the coal charging cup measures 23 mm long × 23 mm wide × 20 mm high. The dimensions of the six compartments in the coal charging cup were slightly deformed during coal charging, and the coke lumps also deformed after coking; these are approximate dimensions. The average dimensions are 20.12 mm long × 19.72 mm wide × 16.24 mm high, with an average weight of 7.21 g. The coke lumps are generally uniform and have good homogeneity.

[0056] quality of coke

[0057] Using the same coal, the reactivity CRI of coke produced in large industrial coke ovens is 15.93, while the reactivity of coke produced by this technology is 19.6, with an absolute error of [missing information]. The CRI is 3.67, which has a relatively large margin of error. However, the post-reaction strength (CSR) of coke produced by large industrial coke ovens is 74.84, while the post-reaction strength (CSR) of coke produced by this technology is 72.5, with an absolute error. The CSR is 2.34, with a percentage error of 3.13%. The CSR of the coke after reaction is very close. Other indicators of industrial coke and coke produced by this technology are very similar: ash content (Ad) is 12% for the former and 12.34% for the latter; volatile matter (Vdaf) is 1.35% for the former and 1.08% for the latter; total sulfur (Std) is 0.97% for the former and 0.95% for the latter. These key indicators are very close. The data shows that the 100-gram-sized coke lumps produced by this technology can accurately predict the quality of coke produced by coal blending.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 invention, and are not intended to 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 invention.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. Equipment for producing multiple coal cakes and multiple coke blocks, characterized in that: include A coal loading assembly includes a coal loading frame (1), an upper platform (2), a middle platform (3) and a lower platform (4) are fixedly connected inside the coal loading frame (1), an upper lifting pressure assembly is fixedly connected to the upper platform (2), a carbonization chamber body (5) is detachably connected to the middle platform (3), the carbonization chamber body (5) is set through the middle platform (3), a lower pressure assembly is fixedly connected to the lower platform (4), a coal loading cup (6) is set above the lower pressure assembly, and the coal loading cup (6) is located inside the carbonization chamber body (5); The processing assembly includes a carbonization component detachably connected to the carbonization chamber body (5) and a heating furnace assembly adapted to the carbonization chamber body (5).

2. The equipment for making multiple coal cakes and multiple coke blocks according to claim 1, characterized in that: The upper lifting pressure assembly includes an upper lifting pressure rod (7) that passes through the upper platform (2) and is slidably connected to the upper platform (2). A coal pressing head (8) is fixedly connected to the bottom end of the upper lifting pressure rod (7). A partition strip gap adapted to the coal cup (6) is provided at the bottom of the coal pressing head (8). An upper lifting press (9) that controls the up and down movement of the upper lifting pressure rod (7) is fixedly connected to the upper platform (2).

3. The equipment for making multiple coal cakes and multiple coke blocks according to claim 1, characterized in that: The intermediate platform (3) has an opening that is compatible with the carbonization chamber body (5), and a fixing clip (10) is installed on the intermediate platform (3), with the fixing clip (10) located around the opening.

4. The equipment for making multiple coal cakes and multiple coke blocks according to claim 1, characterized in that: The lower pressure assembly includes a lower lifting pressure rod (11) that passes through the lower platform (4) and is slidably connected to the lower platform (4). A bottom pressure plate (12) is fixedly connected to the top of the lower lifting pressure rod (11). The coal charging cup (6) is located above the bottom pressure plate (12). The bottom pressure plate (12) is adapted to the carbonization chamber body (5). A lower lifting press (13) that controls the up and down movement of the lower lifting pressure rod (11) is fixedly connected to the lower platform (4).

5. The equipment for making multiple coal cakes and multiple coke blocks according to claim 2, characterized in that: The coal charging cup (6) includes a bottom, a side wall, and an inner dividing strip. The inner dividing strip divides the area above the bottom of the coal charging cup into multiple coal charging compartments. The inner dividing strip is set in correspondence with the dividing strip gap of the coal pressing head (8). The coal charging cup (6) is made of paper or metal steel plate.

6. The equipment for making multiple coal cakes and multiple coke blocks according to claim 5, characterized in that: Each of the aforementioned coal charging compartments has a volume of 3 cm³. 3 ~27cm 3 The coal loading grid is in the shape of a square grid adapted to a rectangular carbonization chamber or a fan-shaped column adapted to a cylindrical carbonization chamber.

7. The equipment for making multiple coal cakes and multiple coke blocks according to claim 1, characterized in that: The carbonization assembly includes a movable top cover (14) and a movable bottom cover (15) that are detachably connected to the main body (5) of the carbonization chamber. The movable top cover (14) is provided with a pyrolysis gas pipe (16), a coal pressing sleeve (17), a carbonization chamber top thermocouple tube (18), and a dry quenching gas N2 inlet pipe (19). A coal pressing rod (20) is provided inside the coal pressing sleeve (17). A weight block (21) is provided at the top of the coal pressing rod (20), and a coal pressing plate (22) is fixedly connected to the bottom of the coal pressing rod (20).

8. The equipment for making multiple coal cakes and multiple coke blocks according to claim 7, characterized in that: The heating furnace assembly includes a heating furnace body (23). The heating furnace body (23) consists of a metal plate shell, a heat insulation layer, a high-temperature heat insulation layer and a furnace chamber from the outside to the inside. The size of the furnace chamber is not less than the size of the carbonization chamber body (5). The top of the heating furnace body (23) is provided with a furnace cover (24) with a rotary switch. The furnace cover (24) is provided with through holes corresponding to the pyrolysis gas pipe (16), the coal pressing sleeve (17), the carbonization chamber top thermocouple tube (18) and the dry quenching gas N2 inlet pipe (19). A heating element (27) is provided in the middle of the heating furnace body (23). The heating furnace body (23) is provided with a combustion chamber and a purification chamber. The combustion chamber is provided with a pyrolysis gas inlet and an air inlet. The combustion chamber is located below the heating element (27). The purification chamber is located below the combustion chamber. A pyrolysis gas pipe (25) is connected between the combustion chamber and the purification chamber. A purification gas outlet is provided on the side of the purification chamber.

9. Based on the equipment for producing multiple coal cakes and multiple coke blocks according to any one of claims 1-8, and the method for preparing multiple coal cakes and multiple coke blocks, characterized in that: Includes the following steps, Step 1: Separate and press the coal; Step 1.1: Install the main body of the carbonization chamber (5) inside the coal charging assembly and install the coal charging cup (6); Step 1.2: Adjust the position of the coal loading cup (6) and load coal; Step 1.3: Press the coal until 3-4 layers of coal samples are loaded; Step two, carbonize the coal; Step 2.1: Take out the main body (5) of the carbonization chamber containing the compressed coal sample from Step 1, and install the carbonization components; Step 2.2: Carbonize the coal sample into coke; Step 3: After opening the nitrogen valve to circulate nitrogen for cooling and quenching the coke, open the heating furnace assembly and remove the carbonization chamber body (5). Open the carbonization chamber body (5) to obtain coke blocks.

Images