Coke product cooling system and method

Abstract

The embodiment of the invention provides a coke product cooling system and method.The coke product cooling system comprises a coke discharging device, a cold coal loading device, a cooling device and a screening device, and an inlet of the coke discharging device is used for being connected with an outlet of a coke oven so as to obtain a coke product which is subjected to coking and to be cooled and has the first particle size from the coke oven; the cold coal loading device is used for loading cooled coal with a second particle size, and the second particle size is smaller than the first particle size; an inlet of the cooling device is respectively connected with an outlet of the coke discharging device and an outlet of the cold coal loading device, the cooling device is used for receiving and mixing the coke product and the coal material, so that the coke product is cooled by the coal material, and the coal material is heated by the coke product to form a coal product; an inlet of the screening device is connected with an outlet of the cooling device and used for obtaining and screening coke products and coal products of different particle sizes. And in the cooling link of the coke product, the heat of the coke product is efficiently recovered, the environmental pollution is low, the coal product can be obtained, and the benefit is better than that of waste heat recovery power generation.

Description

Technical Field

[0001] The present invention relates to the technical field of coke product processing, and in particular to a coke product cooling system and method. Background Art

[0002] After coal is coked to produce a red-hot coke product, it is typically subjected to a dry quenching process. Traditional quenching methods include in-furnace quenching and off-furnace quenching, which reduce the coke product temperature to below 250°C to meet the requirements for subsequent transportation and storage. Off-furnace quenching is categorized into two methods: dry quenching and wet quenching. Dry quenching utilizes waste heat to generate electricity, recovering and reusing the heat from the coke product. However, in reality, this waste heat power generation method requires high investment and results in poor returns. Wet quenching, on the other hand, is simpler and requires less investment, but it is difficult to recover the heat from the coke product and is more polluting.

[0003] In the existing technology, the cooling process of coke products has problems such as low heat recovery efficiency, serious environmental pollution and low investment returns. In order to solve the above problems, the existing technology needs to be improved urgently. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a coke product cooling system and method to efficiently recover heat, reduce environmental pollution, and improve the economic benefits of coking. The specific technical solutions are as follows:

[0005] The present application provides a coke product cooling system, comprising:

[0006] a coke discharge device, wherein the inlet of the coke discharge device is used to be connected to the outlet of the coke oven so as to obtain the coke product of the first particle size to be cooled after coking from the coke oven;

[0007] a cold coal loading device for loading cooled coal of a second particle size, wherein the second particle size is smaller than the first particle size;

[0008] a cooling device, wherein the inlet of the cooling device is connected to the outlet of the coke discharge device and the outlet of the cold coal charging device respectively, and the cooling device is used to receive and mix the coke product and the coal charge, so that the coke product is cooled by the coal charge, and the coal charge is heated by the coke product to form a coal product, wherein the coal product includes dried coal or upgraded coal;

[0009] A screening device, the inlet of which is connected to the outlet of the cooling device, is used to obtain and screen the coke product and the coal product of different particle sizes.

[0010] In some embodiments, the coke removal device includes: a first sealed chamber and a first conveying device;

[0011] The first sealed chamber has a first communication port and a second communication port, the first communication port is the inlet of the coke removal device, and the second communication port is the outlet of the coke removal device;

[0012] The first conveying device is arranged in the first sealed chamber, and obtains the coke product of the first particle size to be cooled after coking from the coke oven, and conveys it to the cooling device.

[0013] In some embodiments, the cooling device includes a second sealed chamber;

[0014] The second sealed chamber has a third communicating port and a fourth communicating port, both of which are inlets of the cooling device. The third communicating port is connected to the outlet of the coke removal device, and the fourth communicating port is connected to the outlet of the cold coal loading device.

[0015] In some embodiments, further comprising:

[0016] Gas outlet channel;

[0017] Gas and condensate treatment and recovery equipment;

[0018] The second sealed chamber has a fifth connecting port, and the gas outlet channel is respectively connected to the fifth connecting port and the inlet of the gas and condensed water treatment and recovery device. The gas and condensed water treatment and recovery device is used to receive, separate and purify the water vapor and coal gas generated by the heating of the coal material through the gas outlet channel to obtain coal gas and condensed water respectively.

[0019] In some embodiments, the outlet of the second sealed chamber is provided with a mixed material discharge valve;

[0020] The inlet of the screening device is connected to the mixture discharge valve.

[0021] In some embodiments, further comprising:

[0022] coke product silo;

[0023] a coke product discharge device, connected to the coke product screening port of the screening device and the coke product silo, respectively;

[0024] coal product silos;

[0025] The coal product discharge device is respectively connected to the coal product screening port of the screening device and the coal product silo.

[0026] In some embodiments, further comprising:

[0027] conveying device;

[0028] A coke product discharge valve is provided at the bottom of the coke product silo, and a coal product discharge valve is provided at the bottom of the coal product silo;

[0029] The conveying device is used to transport the coke products discharged from the coke product silo and the coal products discharged from the coal product silo respectively.

[0030] In some embodiments, the temperature of the coke product to be cooled is t1, 600°C ≤ t1 ≤ 1000°C;

[0031] The temperature of the cooled coal is t2, 10℃≤t1≤30℃;

[0032] The first particle size is d1, the second particle size is d2, and 2≤d1 / d2≤10.

[0033] In some embodiments, further comprising:

[0034] A coke oven, wherein the outlet of the coke oven is connected to the inlet of the coke discharge device.

[0035] The present application provides a coke product cooling method, comprising:

[0036] Mixing a coke product of a first particle size to be cooled and a cooled coal of a second particle size, cooling the coke product to below 250° C. by the coal, and heating the coal by the coke product to form a coal product, wherein the coal product comprises dried coal or upgraded coal, wherein the first particle size is larger than the second particle size;

[0037] The cooled coke product and the coal product are screened to obtain cooled coke product and the coal product respectively.

[0038] In some embodiments, further comprising:

[0039] The water vapor and coal gas generated by heating the coal material are separated and purified to obtain coal gas and condensed water respectively.

[0040] In some embodiments, the temperature of the coke product to be cooled is t1, 600°C ≤ t1 ≤ 1000°C;

[0041] The temperature of the cooled coal is t2, 10℃≤t1≤30℃;

[0042] The first particle size is d1, the second particle size is d2, and 2≤d1 / d2≤10.

[0043] Beneficial effects of the embodiments of the present invention:

[0044] The embodiment of the present invention provides a coke product cooling system and method, and the coke product cooling system includes a coke discharge device, a cold coal loading device, a cooling device and a screening device, the inlet of the coke discharge device is used to connect to the outlet of the coke oven to obtain coke products of the first particle size to be cooled after coking from the coke oven; the cold coal loading device is used to load cooled coal of the second particle size, wherein the second particle size is smaller than the first particle size; the inlet of the cooling device is respectively connected to the outlet of the coke discharge device and the outlet of the cold coal loading device, the cooling device is used to receive and mix the coke products and the coal, so that the coke products are cooled by the coal, and the coal is heated by the coke products to form coal products, and the coal products include dried coal or upgraded coal; the inlet of the screening device is connected to the outlet of the cooling device, and is used to obtain and screen the coke products and coal products of different particle sizes. During the cooling process of the coke product, the coke product of the first particle size to be cooled can be fed into the cooling device through the coke discharge device, and the cooled coal material of the second particle size can be fed into the cooling device at the same time. The coke product of the first particle size to be cooled and the cooled coal material of the second particle size are mixed, so that the coke product is cooled by the coal material, and the coal material is heated by the coke product to form a coal product. Since the particle size of the coal material is smaller than the particle size of the coke product, the particle size of the coal product formed by the cooling of the coal material is different from the particle size of the cooled coke product (the particle size of the coal product is smaller than the particle size of the coke product). The cooled coke product and the coal product can be screened by a screening device to obtain the cooled coke product and the coal product, respectively. In the embodiment of this solution, the heat of the coke product is efficiently recovered during the cooling process of the coke product, environmental pollution is low, and coal products can also be obtained, which is more efficient than waste heat recovery power generation.

[0045] Of course, it is not necessary to achieve all of the advantages described above simultaneously in order to implement any product or method of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0047] Figure 1 A schematic structural diagram of a coke product cooling system provided in an embodiment of the present application;

[0048] Figure 2 A schematic flow chart of a coke product cooling method provided in an embodiment of the present application;

[0049] Figure 3 A schematic flow chart of a specific coke product cooling method provided in an embodiment of the present application.

[0050] The reference numerals are as follows:

[0051] Coke discharge device 10, first sealed chamber 11, first connecting port 111, second connecting port 112, first conveying device 12, cold coal loading device 20, cooling device 30, second sealed chamber 31, third connecting port 311, fourth connecting port 312, fifth connecting port 313, mixture discharge valve 314, screening device 40, gas outlet channel 50, gas and condensate treatment and recovery device 60, coke product silo 71, coke product discharge valve 711, coke product discharge device 72, coal product silo 81, coal product discharge valve 811, coal product discharge device 82, conveying device 90, coke oven 100. DETAILED DESCRIPTION

[0052] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of the present invention.

[0053] In traditional coke cooling processes, wet quenching fails to recover the heat energy contained in the high-temperature coke, resulting in significant waste of waste heat resources. Furthermore, water vapor carries pollutants, causing secondary pollution. While dry quenching can generate steam for power generation through waste heat boilers, the associated inert gas circulation system and power generation equipment significantly increase construction costs and operational complexity, resulting in a low return on investment.

[0054] The purpose of the embodiments of the present invention is to provide a coke product cooling system and method, which can efficiently recover heat, reduce environmental pollution, and improve the economic benefits of coking.

[0055] Faced with the aforementioned challenges, the technical solution of this application considers integrating the coke product cooling process with the coal heating process to simultaneously achieve heat recovery and pollutant control. Traditional wet coke quenching, which directly sprays water for cooling, results in significant steam escape, while dry coke quenching relies on an inert gas circulation system, making it difficult to balance heat transfer efficiency and cost. To address this, this application introduces direct contact heat exchange between the coke product and the cooling medium, but this requires avoiding water vapor contamination. Furthermore, using a solid cooling medium instead of water or gas reduces steam generation while utilizing the coke product's waste heat to heat the medium. Coal as a cooling medium offers dual advantages: its particle size can be adjusted to increase contact area, and after heating, it can be directly converted into dried coal or upgraded coal products. Furthermore, by controlling the particle size difference between the coke product and coal, a screening device can be used to quickly separate the coke product after mixing, minimizing the impact of residual medium on coke product quality. Ultimately, the application selected a cold coal loading device in conjunction with a coke discharge device, allowing the high-temperature coke product and low-temperature coal to mix and exchange heat in the cooling device, followed by separate recovery of the coke product and coal products through a screening device.

[0056] Specifically, a coke product cooling system and method according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0057] Figure 1 A schematic diagram of a coke product cooling system provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the coke product cooling system includes a coke discharge device 10, a cold coal charging device 20, a cooling device 30 and a screening device 40, the inlet of the coke discharge device 10 is used to connect to the outlet of the coke oven 100 to obtain the coke product of the first particle size to be cooled after coking from the coke oven 100; the cold coal charging device 20 is used to load cooled coal of the second particle size, wherein the second particle size is smaller than the first particle size; the inlet of the cooling device 30 is respectively connected to the outlet of the coke discharge device 10 and the outlet of the cold coal charging device 20, the cooling device 30 is used to receive and mix the coke product and the coal, so that the coke product is cooled by the coal, and the coal is heated by the coke product to form a coal product, and the coal product includes dried coal or upgraded coal; the inlet of the screening device 40 is connected to the outlet of the cooling device 30, and is used to obtain and screen the coke product and the coal product of different particle sizes.

[0058] The core innovation of this application lies in directly mixing high-temperature coke and low-temperature coal for heat exchange, and achieving dual effects through particle size differences: using the coal to cool the coke to meet the transportation requirements of the coke, and using the waste heat of the coke to dry (evaporate the moisture in the coal) or improve the quality (evaporate the moisture and part of the coal gas in the coal) the coal, simultaneously realizing waste heat recovery and pollutant emission reduction (reduced water vapor emissions compared to wet quenching), effectively overcoming the technical defects of traditional wet quenching, such as high heat loss and high pollution, and dry quenching, which has high investment and low benefits.

[0059] The working process and principle of the present application are as follows: the coke product cooling system includes a coke discharge device 10, a cold coal charging device 20, a cooling device 30 and a screening device 40. The inlet of the coke discharge device 10 is connected to the outlet of the coke oven 100 to obtain the coke product of the first particle size to be cooled after coking. The cold coal charging device 20 is loaded with cooled coal of the second particle size, and the second particle size is smaller than the first particle size. The inlet of the cooling device 30 is respectively connected to the outlet of the coke discharge device 10 and the outlet of the cold coal charging device 20 to receive and mix the coke product and the coal. In the cooling device 30, the coke product is cooled by the coal, and the coal is heated by the coke product to form a coal product, including dried coal or upgraded coal. The inlet of the screening device 40 is connected to the outlet of the cooling device 30 to obtain and screen coke products and coal products of different particle sizes.

[0060] In some embodiments, the coke product cooling system further includes a coke oven 100, the outlet of the coke oven 100 being connected to the inlet of the coke discharge device 10. During operation of the coke product cooling system, high-temperature coke product is discharged from the coke oven 100 and enters the coke discharge device 10. The high-temperature coke product is then transported to the cooling device 30 via the coke discharge device 10. Simultaneously, the cold coal loading device 20 delivers cooled coal to the cooling device 30. Within the cooling device 30, the large-particle, high-temperature coke product and the small-particle, low-temperature coal are thoroughly mixed, achieving rapid cooling of the coke product and effective heating of the coal through direct contact heat exchange. During the heat exchange process, the coke product releases heat and cools down, while the coal absorbs heat, heating it and undergoing a drying reaction to produce dry coal (i.e., the coal is heated to approximately 200°C, evaporating its moisture). Alternatively, the coal absorbs heat, heating it and undergoing an upgrading reaction to produce upgraded coal (i.e., the coal is heated to above 300°C, evaporating or dry-distilling its moisture and some coal gas). The coal product can be either dry coal or upgraded coal, depending on factors such as the coke product temperature and the mass ratio of the coke product to the coal. The cooled mixture enters the screening device 40, where the cooled coke product and heated coal product are separated by particle size differences.

[0061] The coke product cooling system can increase the contact area and improve heat exchange efficiency by rationally designing the particle size ratio of the coke product and coal. For example, the first particle size is d1, the second particle size is d2, and 2≤d1 / d2≤10. In the embodiments of the application, the first and second particle sizes refer to the particle sizes that can be screened by the screening device, thereby utilizing the particle size difference to separate the cooled coke product from the heated coal product.

[0062] The coke product cooling system can reasonably design the temperature range of the coke product and the coal charge. The temperature of the coke product to be cooled is t1, 600℃≤t1≤1000℃, and the temperature of the cooled coal charge is t2, 10℃≤t1≤30℃.

[0063] The coke cooling system can be optimized by properly designing the mass ratio of coke to coal to ensure that the heat required by the coal during the heat exchange process between the two products is met. A higher mass ratio of coal results in faster coke cooling. A lower mass ratio is recommended when the coal requires more heat (e.g., during a coal upgrading reaction to produce upgraded coal).

[0064] Traditional coke quenching methods include in-furnace quenching and external quenching. In-furnace quenching uses steam or gas to cool the coke product inside the coke oven before discharging it. This quenching method is only suitable for continuous vertical coke ovens. Furthermore, using steam quenching can lead to significant burnout of the coke product due to the water-gas reaction. Modern horizontal chamber coke ovens all use external quenching, but external quenching can also cause significant burnout of the coke product during transportation.

[0065] In the embodiment provided in the present application, the coke removal device 10 includes: a first sealed chamber 11 and a first conveying device 12; the first sealed chamber 11 has a first connecting port 111 and a second connecting port 112, the first connecting port 111 is the entrance of the coke removal device 10, and the second connecting port 112 is the outlet of the coke removal device 10; the first conveying device 12 is arranged in the first sealed chamber 11, obtains the coke product of the first particle size to be cooled after coking from the coke oven 100, and conveys it to the cooling device 30.

[0066] Among them, the inner wall of the first sealed chamber 11 is made of high-temperature resistant material, the internal space is a closed cavity isolated from the outside, the first connecting port 111 and the outlet of the coke oven 100 can be sealed by a flange, and the second connecting port 112 and the inlet of the cooling device 30 can be sealed by a flange.

[0067] The first conveying device 12 may be a screw conveyor or a chain conveyor. The cavity length of the first sealed chamber 11 matches the conveying path of the first conveying device 12 , and the coke product is continuously conveyed in the first sealed chamber 11 .

[0068] Specifically, the high-temperature coke product discharged from the coke oven 100 enters the first sealed chamber 11 through the first communication port 111 and is transported by the first conveying device 12 to the second communication port 112 in a sealed environment. During this process, the first sealed chamber 11 isolates the coke product from external air, reducing heat loss and dust emission from the coke product while also minimizing burns caused by the reaction between the high-temperature coke product and the external air. The sealed coke discharge device 10 structure completely seals the coke product's transmission path from the coke oven 100 to the cooling device 30, achieving efficient heat recovery and controlling environmental pollution.

[0069] In some embodiments, the coke removal device 10 further includes a dust removal device, which removes dust from the coke product in the first sealed chamber 11 .

[0070] If the high-temperature coke products output by the coke discharge device 10 and the cold coal charging device 20 are mixed with the cooling coal in an open environment, it is easy to cause the coke products to burn, volatile gases and dust to leak out, causing environmental pollution and heat energy loss. In the embodiment provided in this application, the cooling device 30 includes a second sealed chamber 31; the second sealed chamber 31 has a third connecting port 311 and a fourth connecting port 312, and the third connecting port 311 and the fourth connecting port 312 are both inlets of the cooling device 30. The third connecting port 311 is connected to the outlet of the coke discharge device 10, and the fourth connecting port 312 is connected to the outlet of the cold coal charging device 20.

[0071] The second sealed chamber 31 adopts a fully enclosed cavity structure isolated from the outside world, and the third communication port 311 is located on one side above the second sealed chamber 31, so as to be rigidly connected to the outlet of the coke removal device 10 through a flange.

[0072] The fourth connecting port 312 is located at the top of the second sealed chamber 31. In some embodiments, the outlet of the refrigerant loading device 20 may be provided with a refrigerant discharge valve. By opening the valve, the coal falls into the second sealed chamber 31 from the fourth connecting port 312 under gravity.

[0073] In some embodiments, the refrigerant loading device 20 may be a coal loading trolley or a sealed coal loading belt, which is used to deliver the refrigerant into the second sealed chamber 31 through the fourth connecting port 312 .

[0074] During the process of mixing coke products and coal, water vapor and coal gas may be generated as the coal is heated. If these gases cannot be effectively collected and processed, it will lead to heat waste and environmental pollution. In an embodiment of the present application, the coke product cooling system also includes: a gas outlet channel 50 and a gas and condensed water treatment and recovery device 60. The second sealed chamber 31 has a fifth connecting port 313, and the gas outlet channel 50 is respectively connected to the fifth connecting port 313 and the inlet of the gas and condensed water treatment and recovery device 60. The gas and condensed water treatment and recovery device 60 is used to receive, separate and purify the water vapor and coal gas generated by the heating of the coal through the gas outlet channel 50 to obtain coal gas and condensed water, respectively.

[0075] The fifth communication port 313 may be located on the other side above the second sealed chamber 31 , so as to facilitate the rising and collection of the mixed gas (coal gas and condensed water) and to be transported to the gas and condensed water treatment and recovery device 60 through the gas outlet channel 50 .

[0076] The gas and condensed water processing and recovery device 60 may include a separator, a scrubber, and a dust removal device. The separator is used to separate the coal gas and condensed water, and the scrubber and dust removal device can purify the separated coal gas and remove impurities in the coal gas.

[0077] The technical solution of this application effectively recovers and utilizes the water vapor and gas generated during the coal heating process. This reduces waste gas emissions and improves resource utilization. The recovered gas can be used as fuel, and the condensed water can be recycled, thereby improving economic benefits.

[0078] Specifically, the outlet of the second sealed chamber 31 is provided with a mixture discharge valve 314 ; the inlet of the screening device 40 is connected to the mixture discharge valve 314 .

[0079] The outlet of the second sealed chamber 31 may be located at the bottom of the second sealed chamber 31, but is not limited thereto. The mixture discharge valve 314 is not limited to a flat gate or a plug valve. The mixture discharge valve 314 is opened and closed by at least one of a hydraulic drive, a pneumatic drive, or an electric drive. The opening degree of the mixture discharge valve 314 is controlled based on the discharge requirements of the cooling device 30. If the cooling device 30 requires continuous discharge, the mixture discharge valve 314 is always open. If the cooling device 30 requires intermittent discharge, the mixture discharge valve 314 is always closed and opened intermittently during discharge.

[0080] The second sealed chamber 31 can be a furnace with a refractory inner wall. The coke product of the first particle size to be cooled and the cooled coal of the second particle size are simultaneously introduced into the furnace for mixing. The outlet of the second sealed chamber 31 can be located at the bottom of the furnace. The coke product is cooled by the coal to below 250°C. After the coal is heated by the coke product to form a coal product, the mixed material discharge valve 314 is opened. The mixed coke product and coal product are discharged from the furnace under the action of gravity and screened by the screening device 40.

[0081] After the mixed coke and coal products are screened, there is a problem of dust pollution caused by the direct exposure of the screened products to the open environment. At the same time, there is a lack of a device for collecting and classifying products of different particle sizes, which poses a risk of cross-contamination. In the embodiment of the present application, the coke product cooling system also includes: a coke product silo 71, a coke product discharge device 72, a coal product silo 81, and a coal product discharge device 82. The coke product discharge device 72 is respectively connected to the coke product screening port of the screening device 40 and the coke product silo 71; the coal product discharge device 82 is respectively connected to the coal product screening port of the screening device 40 and the coal product silo 81.

[0082] The coke product discharge device 72 and the coke product outlet of the screening device 40 can be connected by a chute or conveyor belt, etc., and in some embodiments, they can be combined with a closed pipeline. The coal product discharge device 82 and the coal product outlet of the screening device 40 can also be connected by a chute or conveyor belt, etc., and in some embodiments, they can be combined with a closed pipeline.

[0083] A coke product discharge valve 711 is provided at the bottom of the coke product silo 71, and a coal product discharge valve 811 is provided at the bottom of the coal product silo 81. The coke product discharge valve 711 and the coal product discharge valve 811 can adopt pneumatic gates, etc., but are not limited thereto.

[0084] When the coke product silo 71 needs to be discharged, the coke product discharge valve 711 is opened. When the coke product silo 71 is continuously discharged, the coke product discharge valve 711 is always open. When the coke product silo 71 is intermittently discharged, the coke product discharge valve 711 is always closed and opened intermittently when the coke product is discharged.

[0085] When the coal product silo 81 needs to be discharged, the coal product discharge valve 811 is opened. When the coal product silo 81 is continuously discharged, the coal product discharge valve 811 is always open. When the coal product silo 81 is intermittently discharged, the coal product discharge valve 811 is always closed and opened intermittently when the coal product is discharged.

[0086] The coke product cooling system further includes a conveying device 90 , which is used to transport the coke products discharged from the coke product silo 71 and the coal products discharged from the coal product silo 81 , respectively.

[0087] The conveying device 90 can be an intermittent conveying device, such as a material receiving trolley or a bag, etc. The conveying device 90 can also be a continuous conveying device, such as a belt conveyor or a nitrogen circulation pneumatic conveying system.

[0088] Figure 2 A schematic diagram of a coke product cooling method provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, an embodiment of the present application provides a coke product cooling method, comprising:

[0089] S10, mixing a coke product of a first particle size to be cooled and a cooled coal charge of a second particle size, cooling the coke product to below 250° C. by the coal charge, and heating the coal charge by the coke product to form a coal product, wherein the coal product includes dried coal or upgraded coal, wherein the first particle size is larger than the second particle size;

[0090] The coke product of the first particle size to be cooled is formed by coking in the coke oven 100. The particle size of the coke product is determined by the size of the coking coal and the coking mechanism. Specifically, the coking product can be formed by coking with coking coal of appropriate size according to the coking mechanism of the coking coal and the first particle size required for the coke product.

[0091] The particle size of the coal material can be determined according to the first particle size of the coke product, so that the first particle size is larger than the second particle size, thereby facilitating the screening of the coke product and the coal product.

[0092] During the heat exchange process, the coke product releases heat and cools down. If the coal is heated to around 200°C, the water in the coal evaporates, producing dried coal. If the coal is heated above 300°C, the water and some coal gas evaporate or dry distill, producing upgraded coal. The coal product can be either dried coal or upgraded coal, depending on factors such as the temperature of the coke product and the mass ratio of the coke product to the coal, which affect the temperature at which the coal is heated.

[0093] S20. Screening the cooled coke product and the coal product to obtain cooled coke product and the coal product, respectively.

[0094] Since there are differences in the particle sizes of coke products and coal products, coke products and coal products can be screened according to the particle sizes.

[0095] In the cooling process of the coke product, the coke product cooling method of the embodiment of the present application efficiently recovers the heat of the coke product, has low environmental pollution, and can also obtain coal products, which is more efficient than waste heat recovery power generation.

[0096] Figure 3 A schematic flow chart of a specific coke product cooling method provided in an embodiment of the present application is shown as follows: Figure 3 As shown, in some embodiments, the above-mentioned coke product cooling method further includes:

[0097] S30, separating and purifying the water vapor and coal gas generated by heating the coal material to obtain coal gas and condensed water respectively.

[0098] The coke product cooling method of the embodiment of the present application efficiently recovers the heat of the coke product, has low environmental pollution, and can also obtain coal gas and condensed water, which is more efficient than waste heat recovery power generation.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A coke product cooling system, characterized in that: include: A coke discharge device (10), wherein the inlet of the coke discharge device (10) is connected to the outlet of the coke oven (100) to obtain a coke product of the first particle size to be cooled after coking from the coke oven (100); a cold coal loading device (20) for loading cooled coal of a second particle size, wherein the second particle size is smaller than the first particle size; a cooling device (30), wherein the inlet of the cooling device (30) is connected to the outlet of the coke removal device (10) and the outlet of the cold coal charging device (20), respectively, and the cooling device (30) is used to receive and mix the coke product and the coal charge, so that the coke product is cooled by the coal charge, and the coal charge is heated by the coke product to form a coal product, wherein the coal product includes dried coal or upgraded coal; A screening device (40) is provided, wherein the inlet of the screening device (40) is connected to the outlet of the cooling device (30), and is used for obtaining and screening the coke product and the coal product of different particle sizes.

2. The coke product cooling system according to claim 1, characterized in that: The coke removal device (10) comprises: a first sealed chamber (11) and a first conveying device (12); The first sealed chamber (11) has a first communication port (111) and a second communication port (112), the first communication port (111) being the inlet of the coke removal device (10), and the second communication port (112) being the outlet of the coke removal device (10); The first conveying device (12) is arranged in the first sealed chamber (11), obtains the coke product of the first particle size to be cooled after coking from the coke oven (100), and conveys it to the cooling device (30).

3. The coke product cooling system according to claim 2, characterized in that: The cooling device (30) includes a second sealed chamber (31); The second sealed chamber (31) has a third communicating port (311) and a fourth communicating port (312), the third communicating port (311) and the fourth communicating port (312) both being inlets of the cooling device (30), the third communicating port (311) being connected to the outlet of the coke removal device (10), and the fourth communicating port (312) being connected to the outlet of the cold coal loading device (20).

4. The coke product cooling system according to claim 3, characterized in that: Also includes: A gas outlet channel (50); Gas and condensate treatment and recovery device (60); The second sealed chamber (31) has a fifth communication port (313), and the gas outlet channel (50) is respectively connected to the fifth communication port (313) and the inlet of the gas and condensed water treatment and recovery device (60). The gas and condensed water treatment and recovery device (60) is used to receive, separate and purify the water vapor and coal gas generated by the heating of the coal through the gas outlet channel (50) to obtain coal gas and condensed water, respectively.

5. The coke product cooling system according to claim 3, characterized in that: The outlet of the second sealed chamber (31) is provided with a mixed material discharge valve (314); The inlet of the screening device (40) is connected to the mixed material discharge valve (314).

6. The coke product cooling system according to claim 1, characterized in that: Also includes: coke product silo (71); a coke product discharge device (72) connected to the coke product screening port of the screening device (40) and the coke product silo (71); Coal product silo (81); The coal product discharge device (82) is respectively connected to the coal product screening port of the screening device (40) and the coal product silo (81).

7. The coke product cooling system according to claim 6, characterized in that: Also includes: a conveying device (90); A coke product discharge valve (711) is provided at the bottom of the coke product silo (71), and a coal product discharge valve (811) is provided at the bottom of the coal product silo (81); The conveying device (90) is used to transport the coke products discharged from the coke product silo (71) and the coal products discharged from the coal product silo (81) respectively.

8. The coke product cooling system according to claim 1, characterized in that: The temperature of the coke product to be cooled is t1, 600°C ≤ t1 ≤ 1000°C; The temperature of the cooled coal is t2, 10℃≤t1≤30℃; The first particle size is d1, the second particle size is d2, and 2≤d1 / d2≤10.

9. The coke product cooling system according to claim 1, characterized in that: Also includes: A coke oven (100), wherein the outlet of the coke oven (100) is connected to the inlet of the coke discharge device (10).

10. A method for cooling coke products, characterized in that: include: Mixing a coke product of a first particle size to be cooled and a cooled coal of a second particle size, cooling the coke product to below 250° C. by the coal, and heating the coal by the coke product to form a coal product, wherein the coal product comprises dried coal or upgraded coal, wherein the first particle size is larger than the second particle size; The cooled coke product and the coal product are screened to obtain cooled coke product and the coal product respectively.

11. The coke product cooling method according to claim 10, characterized in that: Also includes: The water vapor and coal gas generated by heating the coal material are separated and purified to obtain coal gas and condensed water respectively.

12. The coke product cooling method according to claim 10, characterized in that: The temperature of the coke product to be cooled is t1, 600°C ≤ t1 ≤ 1000°C; The temperature of the cooled coal is t2, 10℃≤t1≤30℃; The first particle size is d1, the second particle size is d2, and 2≤d1 / d2≤10.

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