An emergency disposal device and disposal method for red coke in a dry quenching coke tank when an elevator fails

Abstract

The present invention discloses an emergency disposal device for red coke in a dry quenching coke tank when an elevator fails and a disposal method thereof. The device comprises: a storage tank for storing a sintered ore mixture; a distribution module for distributing the sintered ore mixture stored in the storage tank into the dry quenching coke tank; a material level measurement module for measuring the distribution height of the sintered ore mixture distributed into the dry quenching coke tank; a control module for receiving the temperature of the material on the inner surface of the dry quenching coke tank transmitted by the temperature measurement module and the distribution height of the sintered ore mixture distributed into the dry quenching coke tank transmitted by the material level measurement module; when the temperature of the material on the inner surface of the dry quenching coke tank is greater than a threshold temperature, the distribution module is controlled to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank; when the distribution height of the sintered ore mixture reaches a threshold thickness and the temperature of the dry quenching coke tank is not greater than the threshold temperature, the dry quenching rotary coke tank is controlled to stop rotating and the distribution module is controlled to stop distributing.

Description

Technical Field

[0001] The invention belongs to the technical field of coking, and relates to an emergency disposal device for red coke in a dry quenching coke tank when an elevator fails, and a disposal method thereof. Background Art

[0002] The dry coke quenching device has the functions of energy saving, environmental protection, and improving the quality of coke. Under the same coke quality, the dry coke quenching technology can reduce the coal blending cost by about 5% and effectively recover about 30% of the heat output of the coke oven. It saves 0.4~0.6 m3 of water per ton of coke and has the advantages of energy saving and environmental protection such as no harmful gases such as phenol and cyanide and less dust. It is a technology that the state has mandatory to promote and has been developed and widely used in China. When the dry coke quenching elevator fails, the coke tank filled with red coke cannot be processed, especially the coke tank lined with castables. It is impossible to extinguish the red coke by pumping water. Usually, it can only wait for the elevator system to be repaired before loading it into the dry quenching furnace for processing. This disposal method is very passive. If there is heavy rain again, there will be problems such as coke tank performance, coke burnout, large red coke waste heat loss, and deterioration of coke quality and particle size. Summary of the invention

[0003] In order to solve the above problems, the technical solution adopted by the present invention is: an emergency disposal device for red coke in a coke tank for dry quenching when an elevator fails, comprising:

[0004] Temperature measurement module, used to measure the temperature of the material on the inner surface of the CDQ coke tank;

[0005] Storage tanks for storing sintered ore mix;

[0006] The material distribution module is used to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank;

[0007] The material level measurement module is used to measure the thickness of the sintered ore mixture distributed in the dry quenching coke tank;

[0008] The control module is used to receive the temperature of the upper surface material in the dry quenching coke tank transmitted by the temperature measuring module and the distribution thickness of the sintered ore mixture distributed in the dry quenching coke tank transmitted by the material level measurement module, and when the temperature of the upper surface material in the dry quenching coke tank is greater than a threshold temperature, control the distribution module to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank, and when the distribution height of the sintered ore mixture reaches a threshold thickness and the temperature of the dry quenching coke tank is not greater than a threshold temperature, control the dry quenching rotary coke tank to stop rotating and the distribution module to stop distributing.

[0009] Furthermore: it also includes a dust removal module, which is used for dust removal during the distribution of the sintered ore mixture and the sintering process of the sintered ore mixture.

[0010] Furthermore: the threshold temperature is 780°C - 850°C.

[0011] Furthermore: the threshold thickness is 2cm-10cm.

[0012] Furthermore, when controlling the material distribution module to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank, the material distribution is performed from the periphery of the dry quenching coke tank gradually toward the center of the dry quenching coke tank.

[0013] Furthermore: the temperature measurement module and the material distribution measurement module are arranged at one end of the material distribution module and above the CDQ coke tank.

[0014] Furthermore: the sintered ore mixture is a mixture of iron ore powder and coke powder.

[0015] Any of the above methods for emergency disposal of red coke in a coke tank by dry quenching coke when an elevator fails comprises the following steps:

[0016] S1: When the elevator fails, the CDQ rotary coke tank is started to rotate;

[0017] S2: The control module controls the distribution module and the dust removal module to distribute the sintered ore mixture in the storage tank from the outer periphery of the dry coke quenching coke tank to the center of the coke tank in sequence, and the material level measuring device at the distribution head of the distribution module controls the distribution material layer thickness to be 2cm-10cm, and the sintered ore mixture is used to cover the upper part of the dry coke quenching rotary coke tank to isolate the air and prevent the red coke from burning, and gradually cool the red coke, and at the same time, the high-temperature red coke is used to burn the sintered ore mixture into sintered ore;

[0018] S3: 2-10 minutes after the distribution is completed, the temperature measuring module is driven by the swing of the distribution device to measure the temperature from the outer periphery of the coke tank to the center of the coke tank;

[0019] S4: When the temperature of the measuring point in the quenching coke drum is greater than 850°C, the sintered ore mixture in the storage is distributed from the periphery of the coke drum to the center of the circle through the distribution module, and the thickness of the distribution layer is controlled to be 2cm-10cm through the material level measurement module on the distribution module, and the cracked parts after sintering are covered with the sintered ore mixture;

[0020] S5: When there is a temperature measuring point in the coke quenching tank that is not greater than 850°C, the dry quenching rotating coke tank and the dust removal module are stopped.

[0021] The present invention provides an emergency disposal device and disposal method for red coke in a dry quenching coke tank when an elevator fails, which has the following advantages:

[0022] 1) Improve the passive situation and prevent the burning coke from cracking the coke tank lining during the elevator process, causing the red coke to fall to the ground, so as to stabilize the coke quality and particle size indicators, and also avoid safety risks to a large extent;

[0023] 2) The red coke is isolated from the air by the cloth, thereby reducing the burning loss of red coke, maintaining the quality and particle size of coke, and reducing the heat loss of the coke tank;

[0024] 3) Utilize the waste heat of red coke to refine the sintered ore mixture into sintered ore, which greatly reduces the cost of sintered ore preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 is a schematic diagram of the device;

[0027] Figure 2 is a logical schematic diagram of the device.

[0028] Figure numerals: 1. storage tank, 2. material distribution module, 3. material level measurement module, 4. temperature measurement module, 5. dry quenching coke tank, 6. dust removal module, 7. control module. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Figure 1 is a schematic diagram of the device;

[0032] Figure 2 is a logical schematic diagram of the device.

[0033] An emergency disposal device for red coke in a dry quenching coke tank when an elevator fails, comprising: a temperature measurement module 4, a storage tank 1, a material distribution module 2, a control module 7 and a dust removal module 6;

[0034] The temperature measuring module 4 is used to measure the temperature of the surface material inside the CDQ coke tank 5; the temperature measuring module 4 uses an infrared thermometer; the surface material in this application is CDQ;

[0035] The storage tank 1 is used to store the sintered ore mixture;

[0036] The material distribution module 2 is used to distribute the sintered ore mixture stored in the storage tank 1 into the dry quenching coke tank 5;

[0037] The material distribution module 2 adopts a screw conveyor or a material distribution belt; a mounting plate for a temperature measurement module and a material level measurement module is provided under the screw conveyor or the material distribution belt;

[0038] The material level measurement module 3 is used to measure the distribution height of the sintered ore mixture distributed in the dry quenching coke tank 5;

[0039] Dust removal module 6, used for dust removal during the distribution of sintered ore mixture and during the sintering process of the sintered ore mixture;

[0040] The control module 7 is used to receive the temperature of the dry quenching coke tank 5 transmitted by the temperature measuring module 4 and the distribution height of the sintered ore mixture distributed in the dry quenching coke tank 5 transmitted by the material level measuring module 3. When the temperature of the dry quenching coke tank 5 is greater than the threshold temperature, the distribution module 2 is controlled to distribute the sintered ore mixture stored in the storage tank 1 into the dry quenching coke tank 5. When the distribution height of the sintered ore mixture reaches the threshold thickness and the temperature of the dry quenching coke tank 5 is not greater than the threshold temperature, the dry quenching rotary coke tank is controlled to stop rotating and the distribution module 2 is controlled to stop distributing.

[0041] The control module 7 adopts a PLC controller;

[0042] The threshold temperature is 780°C - 850°C.

[0043] The threshold thickness is 2cm-10cm.

[0044] When controlling the material distribution module 2 to distribute the sintered ore mixture stored in the storage tank 1 into the dry coke quenching tank 5 , the material distribution is performed gradually from the periphery of the dry coke quenching tank 5 toward the center of the dry coke quenching tank 5 .

[0045] The temperature measuring module 4 and the material distribution module 2 are arranged at one end of the material distribution module 2 and above the CDQ coke tank 5 .

[0046] The sintered ore mixture is a mixture of iron ore powder, coke powder and the like.

[0047] The method for handling red coke in the dry quenching coke tank by the emergency handling device when any of the above-mentioned elevators fails comprises the following steps:

[0048] S1: When the elevator fails, the CDQ rotary coke tank is started to rotate;

[0049] S2: The control module 7 controls the distribution module 2 and the dust removal module 6 to distribute the sintered ore mixture in the storage tank 1 from the periphery of the dry coke quenching coke tank 5 to the center of the coke tank in sequence, and the material level measuring device at the distribution head of the distribution module 2 controls the distribution material layer thickness to be 2cm-10cm, and the sintered ore mixture is used to cover the upper part of the dry coke quenching rotary coke tank to isolate the air and prevent the red coke from burning, and also gradually cool the red coke, and at the same time, the high-temperature red coke is used to burn the sintered ore mixture into sintered ore;

[0050] S3: 2-10 minutes after the distribution is completed, the temperature measuring module 4 is driven by the swing of the distribution device to measure the temperature from the periphery of the coke tank to the center of the coke tank;

[0051] S4: When the temperature of the measuring point in the quenching coke drum is greater than 850°C, the sintered ore mixture in the storage is distributed from the periphery of the coke drum to the center of the circle through the distribution module 2, and the material level measurement module 3 on the distribution module 2 controls the distribution material layer thickness to be 2cm-10cm, and the cracked parts after sintering are covered with the sintered ore mixture;

[0052] S5: When there is a temperature measuring point in the coke quenching tank that is not greater than 850° C., the dry quenching rotating coke tank and the dust removal module 6 are stopped.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An emergency disposal device for red coke in a coke tank for dry quenching when an elevator fails, characterized by: include: Temperature measurement module, used to measure the temperature of the material on the inner surface of the CDQ coke tank; Storage tanks for storing sintered ore mixture; The material distribution module is used to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank; The material level measurement module is used to measure the thickness of the sintered ore mixture distributed in the dry quenching coke tank; a control module, for receiving the temperature of the upper surface material in the dry quenching coke tank transmitted by the temperature measuring module, and the distribution thickness of the sintered ore mixture distributed in the dry quenching coke tank transmitted by the material level measuring module, and controlling the distribution module to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank when the temperature of the upper surface material in the dry quenching coke tank is greater than a threshold temperature, and controlling the dry quenching coke tank to stop rotating and the distribution module to stop distributing when the distribution height of the sintered ore mixture reaches a threshold thickness and the temperature of the dry quenching coke tank is not greater than a threshold temperature; It also includes a dust removal module for dust removal during the distribution of the sintered ore mixture and the sintering process of the sintered ore mixture; The threshold temperature is 850°C; The threshold thickness is 2cm-10cm; When controlling the material distribution module to distribute the sintered ore mixture stored in the storage tank into the dry quenching coke tank, the material distribution is performed gradually from the periphery of the dry quenching coke tank to the center of the dry quenching coke tank.

2. The emergency disposal device for red coke in the dry quenching coke tank when the elevator fails according to claim 1, characterized in that: The temperature measurement module and the material level measurement module are arranged at one end of the material distribution module and above the CDQ coke tank.

3. The emergency disposal device for red coke in the coke tank during dry quenching when the elevator fails according to claim 1, characterized in that: The sintered ore mixture is a mixture of iron ore powder and coke powder.

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