Self-cleaning type automatic diffusion ignition device applied to coke oven raw gas

Abstract

The utility model discloses a self-cleaning type automatic diffusion ignition device applied to raw gas of a coke oven, and relates to the field of ignition devices. Comprising a main electric cabinet (1), an ignition exciter (2) connected with the main electric cabinet (1), an ignition assembly (3) connected with the ignition exciter (2), a PLC control cabinet (4) connected with the main electric cabinet (1), a diffusion pipe flap valve arranged in a diffusion pipe and a pressure sensor (5) connected with the PLC control cabinet (4) and used for detecting the diffusion pipe flap valve. The igniter assembly comprises an igniter body with a stainless steel shell and an igniter support used for supporting the igniter body. According to the self-cleaning type automatic diffusion ignition device for the coke oven raw gas, the igniter body and the igniter support are made of materials, the igniter body is provided with the stainless steel shell, and the stainless steel shell has the advantages of being resistant to corrosion and high temperature and long in service life. And dirt such as tar and coke powder attached to the ignition head can be automatically oxidized and removed.

Description

Technical Field

[0001] The utility model relates to the technical field of ignition devices, in particular to a self-cleaning automatic diffusion ignition device used for raw gas in coke ovens. Background Art

[0002] In the prior art, after the blended coal with certain specifications is compacted into briquettes, it is loaded into the coke oven carbonization chamber by a coal loading car and isolated from the air for heating. After drying, pyrolysis, melting, bonding, solidification, shrinkage and other stages, the center temperature of the coke cake reaches about 1000±50℃, and finally coke is obtained. The raw coal gas generated by the coal in the carbonization chamber during the coking process is sent to the chemical plant through the riser, bridge pipe and its valve body, gas collecting pipe, and air intake pipe for purification treatment such as tar and naphthalene removal, desulfurization, and debenzenization. Part of the purified pure coal gas is used to produce other final products such as methanol; the other part is returned to the coke oven for combustion to provide the heat required for the coking process of the coke oven.

[0003] When the high-temperature raw gas flows through the bridge pipe, it is cooled by the strong spraying of circulating ammonia water. At this time, most of the tar gas in the raw gas is condensed into tar and converges to the bottom of the gas collecting pipe through the bridge pipe valve body together with the circulating ammonia water, and then flows through the tar box and the suction pipe, and finally enters the mechanized tar ammonia water clarification tank after gas-liquid separation. Most of the smoke generated during the coal loading process enters the gas collecting pipe through the carbonization chamber, the riser, the bridge pipe, and the principle of high-pressure ammonia water negative pressure coal loading.

[0004] During the normal production process of the coke oven, the raw gas produced in the carbonization chamber is sent to the chemical production plant for purification and then used as a raw material for the synthesis or extraction of other chemical products. However, when the coke oven encounters an emergency such as a gas blower trip or a power outage, the raw gas from the coke oven is directly released through the vent pipe on the top of the furnace, producing thick yellow smoke that is extremely harmful to the environment. At this time, the raw gas needs to be ignited and burned to reduce pollution to the environment.

[0005] Traditional coke ovens are equipped with an ignition device or a pilot lamp on the raw gas discharge pipe to ensure that the raw gas is ignited when it is discharged. However, it is found in use that the ignition device is easily contaminated, resulting in poor reliability, and the pilot lamp is easily blown out when the raw gas is discharged and needs to be ignited manually. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a device which has high reliability and high-temperature self-cleaning function and is applied to the self-cleaning automatic ignition of raw gas from coke ovens.

[0007] The technical solution adopted by the utility model to solve the technical problem is: the device for self-cleaning automatic ignition of raw gas from coke ovens comprises a main electric cabinet, an ignition activator connected to the main electric cabinet, an ignition assembly connected to the ignition activator, a PLC control cabinet connected to the main electric cabinet, a venting pipe flap valve arranged in a venting pipe, and a pressure sensor connected to the PLC control cabinet for detecting the venting pipe flap valve;

[0008] The igniter assembly comprises an igniter body with a stainless steel shell and an igniter bracket for supporting the igniter body.

[0009] Furthermore, the igniter bracket is made of stainless steel.

[0010] Furthermore, the igniter assembly also includes a UPS power supply, and the UPS power supply is connected to the PLC control cabinet and the ignition trigger respectively.

[0011] Furthermore, the igniter assembly is arranged on the outer edge of the base of the riser water seal cover, and each of the vent pipes is provided with three sets of igniter assemblies.

[0012] Furthermore, the igniter body includes a heat-insulating frame shell, and the heat-insulating frame shell extends to a position below 0.8 meters of the discharge pipe.

[0013] Furthermore, the insulation frame shell is made of stainless steel and has a thickness of not less than 2 mm.

[0014] Furthermore, the interior of the insulation frame shell is filled with insulation material, the insulation material has a temperature resistance of not less than 1000° C. and a thickness of not less than 90 mm.

[0015] The device is used for the self-cleaning automatic ignition of raw gas from a coke oven. The materials used for the igniter body and the igniter bracket are such that the igniter body has a stainless steel shell. The stainless steel shell has the advantages of being corrosion-resistant, high-temperature-resistant and having a long service life. It can automatically oxidize and remove tar, coke powder and other dirt attached to the ignition head, greatly improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 It is a structural block diagram of an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Main power cabinet; 2. Ignition trigger; 3. Ignition assembly; 4. PLC control cabinet; 5. Pressure sensor; 6. UPS power supply. DETAILED DESCRIPTION

[0020] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the device for self-cleaning automatic ignition of raw gas from a coke oven comprises a main electric cabinet 1, an ignition activator 2 connected to the main electric cabinet 1, an ignition assembly 3 connected to the ignition activator 2, a PLC control cabinet 4 connected to the main electric cabinet 1, a venting pipe flap valve arranged in a venting pipe, and a pressure sensor 5 connected to the PLC control cabinet 4 for detecting the venting pipe flap valve;

[0022] The igniter assembly 3 includes an igniter body having a stainless steel shell and an igniter bracket for supporting the igniter body.

[0023] The device is applied to the self-cleaning automatic ignition of raw gas from a coke oven, wherein the igniter body has a stainless steel shell which is corrosion-resistant, high-temperature-resistant and has a long service life, and can automatically oxidize and remove dirt such as tar and coke powder attached to the ignition head.

[0024] In this embodiment, the ignition device is interlocked with the gas collecting pipe pressure, and uses a pressure sensor to realize the automatic ignition function when the gas collecting pipe pressure exceeds 500Pa. At the same time, it is interlocked with the flap valve of the vent pipe and automatically ignites within 2 seconds after the flap valve is opened. At the same time, the PLC control cabinet 4 is provided with a control panel for manual ignition, and the manual ignition function can also be used when the automatic ignition fails.

[0025] The igniter bracket is made of stainless steel, preferably 304 stainless steel, and the igniter body and the igniter bracket are connected by bolts, wherein the bolts are preferably stainless steel bolts, which are corrosion-resistant, high-temperature-resistant and have a long service life. The igniter assembly 3 also includes a UPS power supply 6, which is respectively connected to the PLC control cabinet 4 and the ignition exciter 2 to achieve an ignition function in the event of a power outage.

[0026] The igniter assembly 3 is arranged on the outer edge of the base of the riser water seal cover, and each vent pipe is provided with 3 sets of igniter assemblies 3. The main electric cabinet 1 is placed on the platform of the riser vent pipe corridor, and the control cabinet is placed in the power distribution room inside the middle coal tower. There are 4 No. 1 coke ovens, 4 No. 2 coke ovens, and a total of 8 vent pipes, requiring a total of 8 sets of low-voltage ignition triggers 2, 24 sets of ignition devices and low-voltage igniters. The original PLC control cabinet 4 is used to control the low-voltage ignition trigger 2. The vent igniter assembly 3 includes 3 sets of igniter bodies and 3 sets of igniter brackets.

[0027] The igniter body includes an insulation frame shell, which extends to a position 0.8 meters below the discharge pipe. The discharge pipe is a high-temperature device, and the gas composition is complex and changeable. The ignition electrode of the igniter body has a temperature resistance of more than 1500°C. The method must be advanced to ensure waterproof and windproof, and the ignition success rate is 100%. The insulation frame shell is made of stainless steel, and the thickness is not less than 2mm. The ignition head of the igniter body works in a harsh environment and requires certain protective measures. In order to maintain its beauty, the integrated insulation frame shell must be made of 304 stainless steel, which is corrosion-resistant and high-temperature-resistant, has a long service life, and is easy to disassemble and assemble, and is easy to maintain.

[0028] The heat insulation frame shell is filled with heat insulation material, the heat insulation material has a temperature resistance of not less than 1000°C and a thickness of not less than 90mm. In this embodiment, the voltage adopts 12V human body intrinsic safety voltage, and the igniter power is less than 30w.

[0029] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0030] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A device for self-cleaning automatic ignition of raw gas from coke ovens, characterized in that: It comprises a main electric cabinet (1), an ignition activator (2) connected to the main electric cabinet (1), an ignition assembly (3) connected to the ignition activator (2), a PLC control cabinet (4) connected to the main electric cabinet (1), a vent pipe flap valve arranged in the vent pipe, and a pressure sensor (5) connected to the PLC control cabinet (4) for detecting the vent pipe flap valve; The igniter assembly (3) comprises an igniter body having a stainless steel shell and an igniter bracket for supporting the igniter body.

2. The device for self-cleaning automatic ignition of raw gas from coke oven according to claim 1 is characterized in that: The igniter bracket is made of stainless steel.

3. The device for self-cleaning automatic ignition of raw gas from coke oven according to claim 1 is characterized in that: The igniter assembly (3) further comprises a UPS power supply (6), wherein the UPS power supply (6) is respectively connected to the PLC control cabinet (4) and the ignition trigger (2).

4. The device for self-cleaning automatic ignition of raw gas from coke oven according to claim 1 is characterized in that: The igniter assembly (3) is arranged on the outer edge of the base of the riser water seal cover, and each of the emission pipes is provided with three sets of igniter assemblies (3).

5. The device for self-cleaning automatic ignition of raw gas from coke oven according to any one of claims 1 to 4, characterized in that: The igniter body comprises a heat-insulating frame shell, and the heat-insulating frame shell extends to a position below 0.8 meters of the discharge pipe.

6. The device for self-cleaning automatic ignition of raw gas from coke oven according to claim 5 is characterized in that: The heat insulation frame shell is made of stainless steel and has a thickness of not less than 2 mm.

7. The device for self-cleaning automatic ignition of raw gas from coke oven according to claim 6 is characterized in that: The interior of the insulation frame shell is filled with insulation material, the insulation material has a temperature resistance of not less than 1000° C. and a thickness of not less than 90 mm.

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