Ignition device of stand pipe

Abstract

The present invention relates to an ignition device for a riser pipe. The present invention provides a plurality of spark plugs that receive high voltage from a booster at the top of the riser pipe and are spaced apart at a predetermined angle, thereby ensuring reliable ignition without being affected by the direction of the wind. As a result, it can be usefully utilized in fields where environmental pollution is to be reduced by minimizing the release of byproduct gases.

Description

Technology Field

[0001] The present invention relates to a riser pipe of a carbonization chamber forming a coke oven, and more specifically, to an ignition device for a riser pipe for igniting byproduct gas discharged through the riser pipe of the carbonization chamber. Background Technology

[0003] Generally, a coke oven consists of a combustion chamber and a carbonization chamber. It is a facility that produces coke, a grayish-white hard crystalline substance, and byproduct gas (COG: Coke Oven Gas) by charging coking raw coal into the carbonization chamber, blocking air, and carbonizing the raw coal at a high temperature (1,000–1,300°C). The carbonization chamber of the coke oven is constructed using refractory bricks, with several charging ports provided at the top of the chamber and a riser pipe provided on one side to discharge and collect the byproduct gas released from the coking raw coal in the chamber.

[0004] The process of manufacturing coke in the carbonization chamber described above consists of, first, a charging process in which coking raw coal is charged into the carbonization chamber using a charging car; a carbonization and carbonization process in which the raw coal charged into the carbonization chamber is carbonized and carbonized at a predetermined temperature for a certain period of time; and an extrusion process in which the coke, after carbonization and carbonization are completed, is removed from the carbonization chamber.

[0005] In the aforementioned coke manufacturing process, the carbonization and carbonization processes involve heating coking raw coal to high temperatures, which causes a large amount of byproduct gases, such as moisture, CO2, and CH4, adsorbed onto the raw coal to be released. These released byproduct gases are collected and discharged through the branch pipes of the riser pipes and utilized as an energy source for the steel mill.

[0006] At the point when carbonization is nearly complete through the above carbonization and carbonization processes, there is little generation of byproduct gas; at this time, before proceeding with the extrusion process, the byproduct gas remaining in the carbonization chamber is removed, and then the extrusion process is carried out.

[0007] As described above, a powerful explosion is likely to occur inside the carbonization chamber and the riser pipe due to opening the riser pipe lead at the top to remove residual byproduct gas in the carbonization chamber or due to ignition caused by the natural inhalation of outside air.

[0008] To mitigate such powerful explosions, the riser pipe lid is opened to ignite and burn the byproduct gas discharged through the riser pipe. Additionally, by gradually opening the charging port lids at the top of the carbonization chamber, outside air is drawn into the chamber and discharged along with the byproduct gas through the riser pipe. By opening the riser pipe lid to burn the byproduct gas while simultaneously opening the charging port lids, explosions within the carbonization chamber and the riser pipe are prevented or minimized.

[0009] Accordingly, an ignition device for igniting the byproduct gas discharged from the top was provided in the riser pipe on one side of the carbonization chamber forming the coke oven; this device consisted of a riser pipe lead provided at the top of the riser pipe to be opened and closed via the piston rod of a cylinder, and a single spark plug.

[0010] The conventional riser tube ignition device described above simply applied high voltage to the spark plug after opening the riser tube lead at the top of the riser tube to ignite the byproduct gas using the spark generated from the tip of the spark plug. However, there were frequent instances where ignition did not occur depending on the direction of the wind, and since the spark plug was also exposed to the atmosphere, foreign substances such as dust and tar adhered to the tip of the spark plug, causing a problem where a spark was not properly generated even when high voltage was applied to the spark plug. The problem to be solved

[0012] The objective of the present invention is to provide an ignition device for a riser pipe that can ignite reliably without being affected by the direction of the wind, and can prevent malfunction of the spark plug by periodically cleaning the spark plug, which has been researched and developed to solve the various problems and drawbacks of the conventional methods as described above. means of solving the problem

[0014] The ignition device for a riser tube according to the present invention for solving the above-mentioned problem comprises a riser tube provided on one side of a carbonization chamber forming a coke oven, a riser tube lead provided at the top of the riser tube that opens and closes through a piston rod of a cylinder, and a spark plug that receives a predetermined high voltage from a booster, wherein the spark plug is provided in a plurality of ignition plugs that ignite simultaneously so as not to be affected by the direction of the wind and are spaced apart at a predetermined angle.

[0015] The spark plug is connected to receive high voltage from a step-up transformer through a power cable, and is characterized in that the power cable installed on the outside along the riser pipe penetrates into the interior of a pipe-shaped rod made of insulating and fire-resistant material, and is provided as a detachable type that can be fastened and detached by a screw method at the end of the rod.

[0016] The above-described stepper includes an AC voltage input unit that receives an AC voltage, a stepper transformer that steps up the AC voltage received from the AC voltage input unit to a predetermined high voltage, a DC conversion and charging unit that converts the AC voltage stepped up by the stepper transformer into direct current (DC) and charges it, and a high-voltage output switching unit that switches the DC voltage converted by the DC conversion and charging unit to a high voltage and outputs it. The high-voltage output switching unit is characterized by being connected to a timer unit for adjusting the output timing of the DC voltage output from the high-voltage output switching unit according to a timer time, and a manual control unit for manually controlling the timer unit.

[0017] An ignition detection sensor for detecting the ignition of byproduct gas discharged from the top of the riser pipe may be provided at the upper part of the riser pipe or at the branch pipe, and the ignition detection sensor may control the timer part of the booster until the ignition of the byproduct gas discharged through the top of the riser pipe is confirmed.

[0018] The above ignition detection sensor can be provided as a contact sensor such as a thermocouple temperature sensor, an RTD (Resistance Temperature Detector) sensor, or a thermistor sensor, or as a non-contact sensor such as an infrared sensor or a vision sensor. Effects of the invention

[0020] According to the ignition device of the riser pipe of the present invention, by arranging a plurality of spark plugs at a predetermined angle apart at the top of the riser pipe, ignition can be reliably achieved without being affected by the direction of the wind, thereby minimizing the release of byproduct gases and reducing environmental pollution.

[0021] In addition, according to the ignition device of the riser pipe according to the present invention, by providing a timer unit in the booster, the spark plug can be cleaned periodically, and thereby, the effect of preventing the operation of the spark plug in advance can be achieved. Brief explanation of the drawing

[0023] FIG. 1 is a schematic diagram showing the carbonization chamber of a coke oven to which an ignition device of a riser pipe according to the present invention is applied. FIG. 2 is a drawing showing an ignition device for a riser pipe according to the present invention. Figure 3 is a drawing showing only the upper part of the riser pipe in Figure 2. FIG. 4 is a diagram showing the circuit of a booster and the spark plug connected thereto in the ignition device of a riser pipe according to the present invention. Figure 5 is a drawing showing the spark plug and its connection part extracted from Figure 4. FIGS. 6a to 6d are drawings illustrating the process of operation of the ignition device of the riser pipe according to the present invention. FIG. 7 is a drawing showing an ignition device of a riser pipe according to another embodiment of the present invention. Specific details for implementing the invention

[0024] The advantages and features of the present invention and the methods for achieving them will become clear from the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms. The embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0026] FIGS. 1 to 6d are drawings shown to explain the ignition device of a riser pipe according to the present invention.

[0027] The ignition device of the riser pipe according to the present invention comprises a carbonization chamber (10) forming a coke oven constructed of refractory bricks, wherein several charging ports (12) are provided at the top of the carbonization chamber (10), and a riser pipe (30) is provided on one side of the carbonization chamber (10) to discharge and collect byproduct gas released from coking raw coal charged therein.

[0028] A loading port (20) is provided in the loading port (12) of the above carbonization chamber (10) to block the loading port (12) after loading coking raw coal.

[0029] A branch pipe (32) for collecting byproduct gas released from coking raw coal loaded into the carbonization chamber (10) may be provided at the upper end of the riser pipe (30). Additionally, a riser pipe lead (40) is provided at the upper end of the riser pipe (30) to be opened and closed by rotating around a hinge (42) on one side, and the riser pipe lead (40) is connected to be opened and closed by a piston rod (54) of a cylinder (50).

[0030] At one end of the above hinge (42), a counterweight (44) that balances the weight with the rising pipe lead (40) is provided, and a rod (46) extending from the counterweight (44) is provided integrally.

[0031] The above cylinder (50) is configured such that a piston rod (54) including a piston protrudes from a cylindrical cylinder body (52), and the end of the piston rod (54) of the cylinder (50) is connected to the end of the rod (46) on the hinge side (42).

[0032] A booster (60) is provided at the upper end of the branch pipe (32) of the riser pipe (30) to boost the AC voltage to a predetermined high voltage and output it, and the booster (60) is provided with a plurality of spark plugs (70) connected to the upper end of the riser pipe (30) through respective power cables (72a).

[0033] The aforementioned plurality of spark plugs (70) are preferably provided at the top of the riser pipe (30) at a position separated from the hinge (42) of the riser pipe lead (40), and are spaced apart from each other at a predetermined angle. The reason for spaced-apart the plurality of spark plugs (70) in this way is to ensure that the byproduct gas discharged through the top of the riser pipe (30) is reliably ignited without adverse effects even if the byproduct gas changes according to the direction of the wind.

[0034] In addition, since the riser pipe (30) is always in a high-temperature state, just like the carbonization chamber (10) during coke production, it is desirable to wrap and protect the power cable (72a) with a material that can prevent heat damage. In particular, at least the power cable (72a) installed along the riser pipe (30) is provided by passing it through the inside of a pipe-shaped rod (72) made of insulating and fire-resistant material, and an ignition plug (70) can be provided at the end of the rod (72) in an integrated or separate form.

[0035] When the spark plug (70) is provided as a detachable type, as shown in FIG. 5, the spark plug (70) is provided so that it can be attached to and detached from the end of the rod (72) in a screw manner. The reason for providing the spark plug (70) as a detachable type in this way is that, unlike an integrated type where the spark plug (70), the rod (72), and multiple rod fixing brackets must be replaced when the spark plug (70) fails, maintenance work is easy and maintenance costs can be reduced because only the spark plug (70) needs to be replaced from the rod (72).

[0036] A work platform may be provided on the riser pipe (30) and the branch pipe (32) from which the branch pipe (32) branches off from the upper part of the riser pipe (30), so that a worker can go up and inspect or repair devices such as the riser pipe lead (40), cylinder (50), and booster (60).

[0037] The above-described booster (60) comprises an AC voltage input unit (61) that receives AC voltage, a boost transformer (62) that boosts the AC voltage received from the AC voltage input unit (61) to a predetermined high voltage, a DC conversion and charging unit (63) that converts the AC voltage boosted by the boost transformer (62) into DC and charges it, and a high-voltage output switching unit (64) that switches the DC voltage converted by the DC conversion and charging unit (63) to a high voltage and outputs it. Additionally, a timer unit (66) for adjusting the output timing of the DC voltage output from the high-voltage output switching unit according to a timer time is connected to the high-voltage output switching unit (64), and a manual control unit (65) for manually controlling the timer unit (66) is connected.

[0038] The above-mentioned booster (60) applies a DC voltage output through a high-voltage output switching unit (64) to a power cable (72a) at predetermined set times, at which the output timing is set in a timer unit (66), and as a result, a spark is generated at the tip of a spark plug (70) provided at the end of the power cable (72a). When a spark is generated at the tip of the spark plug (70) in this way, foreign substances such as dust and tar attached to the tip of the spark plug (70) are detached or incinerated, so the tip of the spark plug (70) is cleaned cleanly.

[0040] The process of operation of the ignition device of the riser pipe according to the present invention, configured as described above, will be explained in detail.

[0041] First, as shown in FIG. 6a, it is assumed that the carbonization of the coking raw coal in the carbonization chamber (10) is almost completed by the carbonization and carbonization process with the riser tube lead (40) at the top of the riser tube (30) closed.

[0042] In this way, when the carbonization of coke is almost complete and there is little byproduct gas generated, the cylinder (50) is operated so that the piston rod (54) is withdrawn from the cylinder body (52) by a predetermined length, and as a result, the rod (46) on the hinge (42) side connected to the end of the piston rod (54) rotates, causing the riser pipe lead (40) at the top of the riser pipe (30) to rotate and open (see FIG. 6b). At this time, since the counterweight (44) on the hinge (42) side is in weight balance with the riser pipe lead (40), it can be operated simply with a small force.

[0043] As the riser pipe lead (40) opens in this way, the byproduct gas inside the carbonization chamber (10) and riser pipe (30) begins to be discharged.

[0044] As described above, when the riser pipe lead (40) at the top of the riser pipe (30) is opened and the byproduct gas begins to be discharged, a predetermined high voltage is applied to the power cable (72a) through the high-voltage output switching unit (64) of the booster (60), and as a result, a spark is generated at the tip of the spark plug (70) provided at the end of the power cable (72a) (see FIG. 6c).

[0045] When a spark is generated at the tip of the spark plug (70) in this way, it ignites the byproduct gas discharged through the top of the riser pipe (30) (see FIG. 6d). At this time, since two spark plugs (70) are spaced apart from each other at the top of the riser pipe (30), ignition can be reliably achieved without being affected by the direction of the wind, thereby minimizing the release of byproduct gas and reducing environmental pollution.

[0047] FIG. 7 is a drawing illustrating an ignition device for a riser pipe according to another embodiment of the present invention. In this case, an ignition detection sensor (80) for detecting the ignition of byproduct gas discharged through the upper end of the riser pipe (30) is additionally added to the upper end of the riser pipe (30) or the branch pipe (32). It is preferable that the ignition detection sensor (80) be configured to control the timer unit (66) of the booster (60) until the ignition of the byproduct gas is confirmed.

[0048] The above ignition detection sensor (80) may be any type of sensor, whether contact-type or non-contact-type, as long as it is capable of detecting whether the byproduct gas is ignited. The above non-contact sensor includes a vision sensor capable of determining at least color discrimination, color range, and the number of colored objects, and an infrared sensor that measures temperature using the infrared emissivity of the measurement target. The above contact-type sensor includes a thermocouple temperature sensor using two different types of metal electromotive forces, an RTD (Resistance Temperature Detector) sensor that measures by converting resistance into temperature, and a thermistor sensor that measures temperature using the change in resistance according to the temperature of a ceramic material. Due to the characteristics of the sensor, it is preferable to install the above contact-type sensor at the top of the riser pipe (30) where the byproduct gas is ignited and burned.

[0049] According to the rising pipe ignition device of another embodiment configured as above, the ignition of the byproduct gas discharged through the top of the rising pipe (30) can be detected by the ignition detection sensor (80), and the timer unit (66) of the booster (60) can be controlled until the ignition of the byproduct gas is confirmed, so the ignition of the byproduct gas can be reliably performed.

[0050] Additionally, proximity sensors (not shown) may be provided at the top and bottom of the cylinder body (52) forming the cylinder (50). Since the proximity sensors detect when the piston on one side of the piston rod (54) is positioned at the top or bottom of the cylinder body (52), the opening and closing of the riser tube lead (40) can be confirmed according to the movement of the piston rod (54) in the cylinder body (52). By providing such proximity sensors, automatic control is possible in conjunction with the booster (60) and the ignition detection sensor (80), thus providing the advantage of enabling the automation of the ignition device management.

[0052] Although preferred embodiments of the present invention have been presented and described above, the present invention is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0054] 10: Carbonization chamber 20: Loading port lid 30: Rising Vision 40: Rising Vision Lead 42: Hinge 44: Counterweight 50: Cylinder 52: Cylinder body 54: Piston rod 60: Step-up transformer 64: High-voltage output switching section 66: Timer section 70: Spark plug 72a: Power cable 80: Ignition detection sensor

Claims

Claim 1 A riser pipe is provided on one side of the carbonization chamber forming the coke oven, and a riser pipe lead that opens and closes via the piston rod of a cylinder is provided at the top of the riser pipe, and includes a spark plug that receives a predetermined high voltage from a booster, wherein the spark plug is provided in multiple units spaced apart at a predetermined angle to ignite simultaneously so as to be ignited without being affected by the direction of the wind, and the booster includes an AC voltage input unit that receives an AC voltage, a step-up transformer that steps up the AC voltage received from the AC voltage input unit to a predetermined high voltage, a DC conversion and charging unit that converts the AC voltage stepped up by the step-up transformer into direct current (DC) and charges, and a high-voltage output switching unit that switches the DC voltage converted by the DC conversion and charging unit into a high voltage and outputs it, wherein the high-voltage output switching unit is connected to a timer unit for adjusting the output timing of the DC voltage output from the high-voltage output switching unit according to a timer time, and a manual control unit for manually controlling the timer unit, and the booster is dust attached to the tip of the spark plug, An ignition device for a riser pipe characterized by the fact that the output timing of a DC voltage output through a high-voltage output switching unit is applied at predetermined set times set in a timer unit so as to detach or incinerate foreign substances containing tar for cleaning. Claim 2 An ignition device for a riser pipe according to claim 1, wherein the spark plug is connected to receive high voltage from a step-up transformer through a power cable, and the power cable installed on the outside along the riser pipe penetrates into the interior of a pipe-shaped rod made of insulating and fire-resistant material, and is provided as a detachable type that can be fastened and detached by a screw method at the end of the rod. Claim 3 delete Claim 4 delete Claim 5 An ignition device for a riser pipe according to claim 1, characterized in that an ignition detection sensor for detecting the ignition of byproduct gas discharged from the top of the riser pipe is provided in the upper part of the riser pipe or in the branch pipe.

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