WO2018111047A1 - Off-gas mixture supply unit and coke oven comprising same - Google Patents

Off-gas mixture supply unit and coke oven comprising same Download PDF

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Publication number
WO2018111047A1
WO2018111047A1 PCT/KR2017/014882 KR2017014882W WO2018111047A1 WO 2018111047 A1 WO2018111047 A1 WO 2018111047A1 KR 2017014882 W KR2017014882 W KR 2017014882W WO 2018111047 A1 WO2018111047 A1 WO 2018111047A1
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WO
WIPO (PCT)
Prior art keywords
exhaust gas
air
supply unit
mixing
chamber
Prior art date
Application number
PCT/KR2017/014882
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French (fr)
Korean (ko)
Inventor
신동남
양희정
박지혜
Original Assignee
주식회사 포스코
재단법인 포항산업과학연구원
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Application filed by 주식회사 포스코, 재단법인 포항산업과학연구원 filed Critical 주식회사 포스코
Publication of WO2018111047A1 publication Critical patent/WO2018111047A1/en

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B21/00—Heating of coke ovens with combustible gases
    • C10B21/10—Regulating and controlling the combustion
    • C10B21/18—Recirculating the flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B45/00—Other details

Definitions

  • the present invention relates to a flue gas mixing supply unit and a coke oven comprising the same.
  • the coke process is one of steelmaking processes in which coke is charged into a carbonization chamber of a coke oven and carbonized using heat generated by burning a fuel gas as a heat source in a combustion chamber.
  • the combustion management for the temperature control of the furnace is very important for the operation of the coke furnace.
  • the coke oven is supplied with the necessary fuel gas and combustion air, depending on the operating rate.
  • Fuel and air enter through a gas inlet box (GIB) and an air inlet box (AIB), respectively.
  • GEB gas inlet box
  • AIB air inlet box
  • combustion air is supplied at an excess air ratio to improve combustion efficiency and prevent incomplete combustion.
  • An object of the present invention is to provide an exhaust gas mixing supply unit and a coke oven including the same, which can increase combustion efficiency while efficiently reducing generation of nitrogen oxides.
  • Exhaust gas mixture supply unit is provided adjacent to the air inlet and the air inlet formed in one end of the air inlet for the air flow for combustion, the exhaust gas is provided, the air mixture It is provided to protrude into the interior of the chamber, it may include an exhaust gas nozzle formed with a plurality of discharge holes in the longitudinal direction.
  • the exhaust gas nozzle of the exhaust gas mixture supply unit is provided to protrude into the inside of the air mixing chamber, the discharge hole is provided in the longitudinal direction of the nozzle body and the upper end of the nozzle body And, it is provided to be inclined in the direction toward the mixing outlet of the air mixing chamber in which the mixed gas is a mixture of air and exhaust gas, the upper portion may be formed to include an inclined pipe to discharge the exhaust gas.
  • the nozzle body of the exhaust gas mixing supply unit according to an embodiment of the present invention, the direction inclined at a predetermined angle in the direction toward the side wall portion of the air mixing chamber in the direction from the air inlet of the air mixing chamber toward the mixing outlet
  • the discharge hole may be formed.
  • the nozzle body of the exhaust gas mixing supply unit protrudes to the lower wall of the air mixing chamber in a direction perpendicular to the direction in which the discharge hole from the air inlet of the air mixing chamber toward the mixing outlet And may be formed.
  • the air inlet is formed at one end, the chamber formed with a mixed outlet for discharging the mixed gas mixed with the air and exhaust gas at the other end It is provided inside the body and the chamber body, it may include a guide plate formed horizontally in the direction from the air inlet to the mixing outlet.
  • the guide plate of the exhaust gas mixture supply unit according to an embodiment of the present invention, the plurality of guide plates are provided side by side in the vertical direction of the chamber body, and gradually from the guide plate provided at the lowermost to the guide plate provided at the top It may be characterized in that it is provided adjacent to the air inlet.
  • the guide plate of the exhaust gas mixture supply unit may be characterized in that the protrusion tab is provided at one end provided adjacent to the exhaust gas nozzle to form a vortex.
  • the coke oven is connected to the exhaust gas mixing supply unit, the mixing outlet formed in the other end of the exhaust gas mixing supply unit and the combustion unit and the combustion unit to receive a mixed gas of exhaust gas and air and It is connected, and may include a carbonization unit that is circulated supply of the exhaust gas to the exhaust gas mixture supply unit, the coke is charged.
  • the combustion unit of the coke oven connected to the exhaust gas mixing supply unit receives the mixed gas, is connected to the combustion chamber and the combustion chamber connected to the carbonization unit, to the combustion chamber It may include additional supply piping for supplying additional air.
  • the carbonization unit of the coke oven is connected to the combustion chamber, the carbonization chamber in which coke is charged, connected to the plurality of carbonization chamber, discharge the exhaust gas discharged from the carbonization chamber to the outside Is connected to the chimney member and the chimney member, and may include a circulation fan for supplying a portion of the exhaust gas to the exhaust gas mixture supply unit.
  • the exhaust gas mixing supply unit of the coke oven comprises an orifice member provided between the exhaust gas nozzle and the circulation fan, the orifice member, the plurality of combustion chambers are provided
  • a plurality of dogs are provided
  • the orifice member connected to the combustion chamber closest to the circulation fan and the orifice member connected to the combustion chamber provided at the outermost portion of the circulation fan are formed to have a smaller hole cross-sectional area through which exhaust gas passes, They may be provided so as to be supplied with the exhaust gas of a uniform flow rate to each other.
  • the exhaust gas mixing supply unit of the present invention and the coke oven including the same can be provided by uniformly mixing the exhaust gas and air for combustion, thereby reducing the generation of nitrogen oxides by increasing the efficiency of delaying combustion or inducing incomplete combustion. It can be effective.
  • the exhaust gas mixing supply unit of the present invention and the coke oven including the same are additionally supplied after the incomplete combustion to complete the combustion completely, there is an advantage that can ensure the combustion efficiency.
  • FIG. 1 is a side view showing a coke oven of the present invention.
  • Figure 2 is a perspective view of the exhaust gas mixture supply unit of the present invention.
  • Figure 3 is a side view showing the exhaust gas mixture supply unit of the present invention.
  • Figure 4 is a perspective view of the exhaust gas nozzle in the exhaust gas mixture supply unit of the present invention.
  • Figure 5 is a graph showing the distribution of the exhaust gas discharged from the mixing outlet of the exhaust gas mixture supply unit of the present invention.
  • FIG. 6 is a graph showing a comparison between the present invention and the conventional nitrogen oxide generation rate.
  • the exhaust gas mixing supply unit 100 and the coke oven including the same can be provided by uniformly mixing the exhaust gas and air for combustion, thereby increasing the efficiency of delaying combustion or inducing incomplete combustion to generate nitrogen oxides. The effect of reducing this can be enhanced.
  • Figure 1 is a side view showing a coke oven of the present invention
  • Figure 7 is a graph showing the comparison between the present invention and the conventional incomplete combustion rate.
  • the coke oven according to an embodiment of the present invention is connected to the exhaust gas mixing supply unit 100 and the mixing outlet 111b formed at the other end of the exhaust gas mixing supply unit 100 to exhaust gas.
  • a carbonization unit 300 connected to the combustion unit 200 and the combustion unit 200 that receives a mixed gas of air and air, and circulates and supplies exhaust gas to the exhaust gas mixing supply unit 100, and is supplied with coke. It may include.
  • the exhaust gas mixing supply unit 100 may include an exhaust gas nozzle 120 capable of uniformly mixing the supplied exhaust gas with air, thereby providing the exhaust gas and the mixed gas of the air uniformly including the exhaust gas. .
  • the combustion temperature is limited to a certain range, thereby reducing the generation of nitrogen oxide generated at a high temperature. And the air can be directed to use for combustion completely.
  • the exhaust gas mixture supply unit 100 serves to uniformly mix air and exhaust gas, which will be described later with reference to FIGS. 2 to 6.
  • the exhaust gas mixture supply unit 100 includes an orifice member 130, when the combustion unit 200 is provided in plural, uniformly supply the mixed gas to be supplied to the plurality of combustion unit 200 Done.
  • the exhaust gas mixture supply unit 100 is provided in plural in correspondence with the combustion unit 200, by the orifice member 130 provided in each of the exhaust gas mixture supply unit 100, respectively, The exhaust gas mixture supply unit 100 is to receive the exhaust gas of a uniform flow rate.
  • the orifice member 130 is orifice hole 130a and the carbonization unit of the orifice member 130 provided in the exhaust gas mixture supply unit 100 closest to the circulation fan 330 of the carbonization unit 300
  • the orifice hole 130a of the orifice member 130 provided in the exhaust gas mixing supply unit 100 positioned at the outermost portion of the circulation fan 330 of 300 is provided with the smallest diameter.
  • Orifice holes (130a) of the remaining orifice member 130 is provided with a diameter gradually increasing from the closest to the center, and gradually smaller toward the outermost from the center.
  • the exhaust gas mixing supply unit 100 of the coke oven includes an orifice member 130 provided between the exhaust gas nozzle 120 and the circulation fan 330,
  • the orifice member 130 is provided with a plurality of corresponding to the combustion chamber 210 is provided with a plurality, orifice member 130 and the circulation associated with the combustion chamber 210 closest to the circulation fan 330 From the fan 330 to the orifice member 130 connected to the combustion chamber 210 provided at the outermost portion to form a smaller hole cross-sectional area through which the exhaust gas passes, so that the combustion chamber 210 to receive the exhaust gas of a uniform flow rate to each other It may be characterized as being provided.
  • the flow rate of the exhaust gas can be uniformly supplied to the plurality of exhaust gas mixture supply units 100.
  • the reason for uniformly supplying the exhaust gas flow rate is that the exhaust gas is no longer moved at the outermost position in the circulation fan 330 so that the flow rate is increased at the outermost portion, so that the orifice member is positioned at the outermost portion.
  • the diameter of the 130 is smaller than the diameter of the orifice member 130 located in the portion adjacent to the center.
  • the diameter of the orifice member 130 located in the closest portion to the center portion It is formed smaller than the diameter of the orifice member 130 located in the portion adjacent to.
  • the combustion unit 200 receives the mixed gas in which air and the exhaust gas are mixed from the exhaust gas mixture supplying unit 100 to perform combustion with the fuel gas.
  • combustion unit 200 is uniformly mixed with the exhaust gas and receives a mixed gas having a low oxygen concentration, incomplete combustion or a combustion delay may occur due to the lack of oxygen when burning the fuel gas.
  • the temperature generated in the combustion unit 200 is limited to a certain temperature, and the generation of nitrogen oxides by the combination of nitrogen and oxygen is suppressed due to the lack of oxygen.
  • the combustion by the mixed gas is one stage of combustion, after which additional air is supplied, thereby performing two stages of combustion to completely burn carbon monoxide generated from incomplete combustion to form carbon dioxide.
  • the coke oven of the present invention provides a second supply of additional air after combustion by the mixed gas to completely burn incompletely burned carbon monoxide due to such a lack of air, thereby inducing a complete combustion after the first combustion.
  • Combustion is performed, and for this purpose, the combustion unit 200 may include a combustion chamber 210 and an additional supply pipe 220.
  • the combustion unit 200 of the coke oven is connected to the exhaust gas mixing supply unit 100 receives the mixed gas, the combustion chamber connected to the carbonization unit 300 ( 210 and an additional supply pipe 220 which is connected to the combustion chamber 210 and supplies additional air to the combustion chamber 210.
  • the additional supply pipe 220 is provided in the portion of the combustion chamber 210 adjacent to the carbonization unit 300 than the exhaust gas mixture supply unit 100. As a result, the carbon monoxide generated after the first stage combustion by the mixed gas supplied from the exhaust gas mixing and supplying unit 100 is completely combusted with the additional air supplied from the additional supply pipe 220.
  • the additional supply pipe 220 may be provided with an additional air control valve is coupled to adjust the air supplied.
  • the carbonization unit 300 is charged with coke, and receives the heat from the combustion unit 200 serves to carbonize the coke.
  • the carbonization unit 300 also serves to circulate the exhaust gas delivered together when transferring heat from the combustion unit 200 to the exhaust gas mixture supply unit 100.
  • the carbonization unit 300 may include a carbonization chamber 310, a chimney member 320, a circulation fan 330.
  • the carbonization unit 300 of the coke oven is connected to the combustion chamber 210, the carbonization chamber 310, the plurality of carbonization chamber 310 and the coke is charged Is connected, connected to the chimney member 320 and the chimney member 320 for discharging the exhaust gas discharged from the carbonization chamber 310 to the outside, to supply a portion of the exhaust gas to the exhaust gas mixture supply unit 100
  • the circulation fan 330 may be included.
  • the carbonization chamber 310 receives the heat burned from the combustion chamber 210, and the coke is charged and carbonized by heat.
  • the carbonization chamber 310 may be provided in communication so as to receive heat from the combustion chamber 210, and may be provided with a waste stool capable of discharging the exhaust gas received from the combustion chamber 210.
  • the chimney member 320 receives the exhaust gas from the waste valve of the carbonization chamber 310 and discharges it to the outside. At this time, some of the exhaust gas is circulated to the exhaust gas mixture supply unit 100 and mixed with air. After it is supplied to the combustion unit 200 again.
  • the circulation fan 330 serves to circulate a portion of the exhaust gas provided to the chimney member 320 to the exhaust gas mixture supply unit 100.
  • the circulation fan 330 is provided on the pipe communicating with the chimney member 320 and the exhaust gas mixture supply unit 100 to form a flow supplied to the exhaust gas mixture supply unit 100.
  • FIG 2 is a perspective view showing the exhaust gas mixture supply unit 100 of the present invention
  • Figure 3 is a side view showing the exhaust gas mixture supply unit 100 of the present invention.
  • Figure 5 is a graph showing the distribution of the exhaust gas discharged from the mixed outlet 111b of the exhaust gas mixture supply unit 100 of the present invention
  • Figure 6 is a graph showing the comparison of the nitrogen oxide generation rate of the present invention and the conventional.
  • the air inlet 111a through which air for combustion flows is formed at one end of the air mixture It is provided adjacent to the chamber 110 and the air inlet 111a, the exhaust gas is provided to flow in, is provided to protrude into the inside of the air mixing chamber 110, a plurality of discharge holes 121 in the longitudinal direction
  • the exhaust gas nozzle 120 may be formed.
  • Air is introduced into the air mixing chamber 110, and serves as a chamber in which the exhaust gas introduced from the exhaust gas nozzle 120 is mixed.
  • the exhaust gas nozzle 120 forms a flow path through which the exhaust gas is supplied in multiple directions, thereby increasing the mixing efficiency of the exhaust gas and the air.
  • the air mixing chamber 110 may include a chamber body 111 having an air inlet 111a through which the air is introduced and a mixing outlet 111b for discharging the mixed gas in which the air and the exhaust gas are mixed. have.
  • the air inlet 111a receives air through the air supply unit 140, and the air supply unit 140 may further include a supply fan for introducing air from the outside, and the flow rate of the supplied air. It may include an air supply control valve to adjust the pressure.
  • the air mixing chamber 110 may further include a guide plate 112 to increase the mixing efficiency of the air and the exhaust gas.
  • the air mixing chamber 110 of the exhaust gas mixing supply unit 100 the air inlet 111a is formed at one end, the air and the exhaust gas is mixed at the other end.
  • the guide plate 112 may be included.
  • the chamber body 111 serves to provide a space in which the air and the exhaust gas are mixed.
  • the mixing discharge port 111b formed in the chamber body 111 supplies the mixed gas to the combustion chamber 210 of the combustion unit 200.
  • the mixed gas is uniformly supplied from the combustion chamber 210.
  • a plurality of mixing outlets 111b may be formed toward the combustion chamber 210 at regular intervals.
  • the guide plate 112 serves to increase the efficiency of mixing the air and the exhaust gas, and serves to form a flow of the mixed gas in which the exhaust gas and the air is mixed to a plurality of mixing outlets (111b) at a uniform flow rate.
  • the guide plate 112 increases the mixing efficiency of the exhaust gas and the air is an advantage that the guide plate 112 can be secured by forming a vortex.
  • the guide plate 112 can be secured by forming a vortex.
  • the flow direction is deformed by collision with the guide plate 112 may form a vortex.
  • a protruding tab 112a may be formed at one end of the guide plate 112.
  • the guide plate 112 of the exhaust gas mixture supply unit 100 is provided with a protrusion tab 112a at one end provided adjacent to the exhaust gas nozzle 120 to provide vortex flow. It may be characterized by forming.
  • the guide plate 112 of the exhaust gas mixture supply unit 100 according to an embodiment of the present invention, a plurality of guide plates 112 are provided side by side in the vertical direction of the chamber body 111, the guide plate 112 provided at the bottom At the top) to the guide plate 112 provided in the upper portion may be characterized in that it is gradually provided adjacent to the air inlet (111a).
  • the mixed gas can be supplied at a uniform flow rate regardless of the formation position of the plurality of mixing discharge ports 111b formed in the longitudinal direction of the chamber body 111.
  • the exhaust gas mixed with the air moved to the upper layer inside the chamber body 111 may form a flow back down
  • the top of the guide plate 112 is provided It is provided relatively close to the air inlet 111a and the exhaust gas nozzle 120 to prevent the exhaust gas from descending to the lower layer first, thereby providing a uniform distribution of the mixed gas and supplying it at a uniform flow rate to the mixing outlet 111b. It will be possible.
  • the exhaust gas nozzle 120 serves to supply the exhaust gas to the air mixing chamber 110.
  • the exhaust gas nozzle 120 forms a plurality of flow paths and can supply the exhaust gas to the air mixing chamber 110, the exhaust gas nozzle 120 increases the mixing efficiency of the air and the exhaust gas.
  • the exhaust gas mixing supply unit 100 of the present invention includes the exhaust gas nozzle 120, the exhaust gas nozzle 120 is provided to protrude into the inside of the air mixing chamber 110, the exhaust gas is discharged By providing a plurality of discharge holes 121, the flow of the exhaust gas is distributed and supplied to increase the mixing efficiency of the exhaust gas and the air.
  • FIG. 5 is a case where a plurality of mixing outlets 111b are formed in two lines in the longitudinal direction of the air mixing chamber 110 (that is, one left and one right lines when viewed from the front of the air mixing chamber 110). It shows the mass fraction of the exhaust gas which is carbon dioxide in the mixed gas discharged in the longitudinal direction of the air mixing chamber 110, the graph shows that the carbon dioxide mass fraction uniform in the longitudinal direction of the air mixing chamber 110. Able to know. In other words, it can be seen that the air and the exhaust gas is uniformly mixed.
  • the exhaust gas nozzle 120 may include a nozzle body 122 and an inclined pipe 123 to increase the mixing efficiency of the exhaust gas and air, which will be described later with reference to FIG. 4.
  • FIG. 4 is a perspective view showing the exhaust gas nozzle 120 in the exhaust gas mixture supply unit 100 of the present invention, referring to this, the exhaust gas nozzle 120 of the exhaust gas mixture supply unit 100 according to an embodiment of the present invention.
  • the discharge hole 121 is provided in the nozzle body 122 and the upper end of the nozzle body 122 formed in the longitudinal direction, air and exhaust gas
  • the gas mixture may be inclined in a direction toward the mixing discharge port 111b of the air mixing chamber 110 to discharge the mixed gas, and may include an inclined pipe 123 configured to open the upper portion to discharge the exhaust gas.
  • the exhaust gas nozzle 120 may include a nozzle body 122 and an inclined pipe 123 to increase the mixing efficiency of the exhaust gas and air.
  • the nozzle body 122 has a configuration in which exhaust gas is supplied from a pipe connected to the circulation fan 330, and the orifice member 130 may be provided between the circulation fan 330.
  • a plurality of discharge holes 121 are formed in the nozzle body 122 in the longitudinal direction, and a plurality of discharge passages of the exhaust gas introduced into the nozzle body 122 are provided.
  • the exhaust gas ensures more flow paths for the air flowing into the air inlet 111a to be mixed in contact with each other, thereby increasing the mixing efficiency with the air.
  • the discharge hole 121 formed in the nozzle body 122 is formed in the longitudinal direction of the chamber body 111 of the air mixing chamber 110 from the air inlet (111a) toward the mixing outlet (111b). Rather, the chamber body 111 may be formed in a direction inclined at a predetermined angle in the longitudinal direction of the chamber body 111.
  • the exhaust gas discharged through the discharge hole 121 also faces the side wall.
  • the exhaust gas collides with the sidewall of the chamber body 111 to further increase the mixing efficiency with the air by forming a vortex.
  • the nozzle body 122 of the exhaust gas mixing and supplying unit 100 is in a direction from the air inlet 111a of the air mixing chamber 110 to the mixing outlet 111b.
  • the discharge hole 121 may be formed in a direction inclined at a predetermined angle toward the side wall of the air mixing chamber 110.
  • the nozzle body 122 is formed to protrude from the chamber body 111 of the air mixing chamber 110, so that the exhaust gas injected from the discharge hole 121 formed in the longitudinal direction of the air inlet 111a The mixing efficiency with the air introduced through the will be increased.
  • the nozzle body 122 of the exhaust gas mixing and supplying unit 100 has a discharge hole 121 at the air inlet 111a of the air mixing chamber 110. It may be characterized in that it is formed to protrude to the lower wall portion of the air mixing chamber 110 in a direction perpendicular to the direction toward 111b).
  • the inclined pipe 123 serves to guide a portion of the exhaust gas supplied through the nozzle body 122 to be moved to the upper layer of the chamber body 111 of the air mixing chamber 110.
  • the inclined pipe 123 to guide the flow path of the exhaust gas to the upper layer.
  • the inclined pipe 123 is provided on the upper end of the nozzle body 122, is provided to be inclined in the longitudinal direction of the chamber body 111, is formed to face the mixing outlet 111b.

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Abstract

An off-gas mixture supply unit, according to one embodiment of the present invention, may comprise: an air mixing chamber having an air inlet for introducing air for combustion formed on one end portion thereof; and an off-gas nozzle having a plurality of discharge holes formed in the longitudinal direction thereof, wherein the off-gas nozzle is provided to be adjacent to the air inlet and protrudes into the inside of the air mixing chamber to introduce the off-gas thereinto.

Description

배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐Exhaust gas mixture supply unit and coke oven including the same
본 발명은 배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐에 관한 것이다.The present invention relates to a flue gas mixing supply unit and a coke oven comprising the same.
코크스 공정은 코크스 오븐의 탄화실에 코크스를 장입하고, 열원인 연료가스를 연소실에서 연소시켜 발생되는 열을 이용하여 건류하는 제철 공정 중의 하나이다. The coke process is one of steelmaking processes in which coke is charged into a carbonization chamber of a coke oven and carbonized using heat generated by burning a fuel gas as a heat source in a combustion chamber.
탄화실과 연소실은 내화벽돌로 분리되어 있어 연소실의 온도를 어떻게 관리하느냐에 따라 코크스의 품질과 가동률이 결정되기 때문에 노의 온도 관리를 위한 연소관리는 코크스로 운전에 매우 중요하다. Since the carbonization chamber and the combustion chamber are separated by refractory bricks, the quality and operation rate of the coke are determined by how the temperature of the combustion chamber is managed. Therefore, the combustion management for the temperature control of the furnace is very important for the operation of the coke furnace.
그런데 이러한 연소과정에서는 질소산화물(NOx)이 발생하며, 질소산화물은 산성비와 미세먼지의 주범이므로 대기로 배출되기 전에 제거되어야 한다.However, in this combustion process, nitrogen oxides (NOx) are generated, and since nitrogen oxides are the main culprit of acid rain and fine dust, they must be removed before being discharged to the atmosphere.
코크스 오븐에는 가동률에 따라 필요한 연료 가스와 연소용 공기가 공급된다. 연료와 공기는 각각 가스 인렛 박스(gas inlet box, GIB)와 에어 인렛 박스(air inlet box, AIB)를 통해서 유입된다. The coke oven is supplied with the necessary fuel gas and combustion air, depending on the operating rate. Fuel and air enter through a gas inlet box (GIB) and an air inlet box (AIB), respectively.
일반적으로 연소효율을 좋게 하면서 불완전연소가 일어나지 않도록 과잉 공기비로 연소용 공기가 공급된다. In general, combustion air is supplied at an excess air ratio to improve combustion efficiency and prevent incomplete combustion.
그러나 이와 같이 과잉 공기를 공급하면 조업 효율을 높일 수는 있으나, 고농도의 질소산화물이 발생하게 되는 문제가 있다. However, when supplying excess air in this way can increase the operating efficiency, there is a problem that a high concentration of nitrogen oxides are generated.
한편, 질소산화물의 발생을 억제하기 위해서, 연소과정에서 발생한 배가스를 순환하여 에어 인렛 박스에 공급하는 기술이 제시되었지만, 배가스를 에어 인렛 박스에만 공급하는 것으로는 질소산화물의 저감 효과가 미미한 한계가 있다.On the other hand, in order to suppress the generation of nitrogen oxide, a technique for circulating the exhaust gas generated during the combustion process and supplying it to the air inlet box has been proposed, but supplying the exhaust gas only to the air inlet box has a limited effect of reducing the nitrogen oxide. .
따라서, 이러한 문제를 해결할 수 있는 배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐에 대한 연구가 필요하게 되었다.Therefore, there is a need for a study of a flue gas mixing supply unit and a coke oven including the same that can solve this problem.
본 발명의 목적은 질소산화물의 발생을 효율적으로 저감시키면서도, 연소 효율을 높일 수 있는 배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐을 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide an exhaust gas mixing supply unit and a coke oven including the same, which can increase combustion efficiency while efficiently reducing generation of nitrogen oxides.
본 발명의 일 실시예에 따른 배가스 혼합공급유닛은 연소를 위한 공기가 유입되는 공기유입구가 일단부에 형성된 공기혼합실 및 상기 공기유입구에 인접하여 구비되며, 배가스가 유입되게 구비되고, 상기 공기혼합실의 내부로 돌출되게 구비되며, 길이 방향으로 다수의 배출홀이 형성된 배가스노즐을 포함할 수 있다.Exhaust gas mixture supply unit according to an embodiment of the present invention is provided adjacent to the air inlet and the air inlet formed in one end of the air inlet for the air flow for combustion, the exhaust gas is provided, the air mixture It is provided to protrude into the interior of the chamber, it may include an exhaust gas nozzle formed with a plurality of discharge holes in the longitudinal direction.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 배가스노즐은, 상기 공기혼합실의 내부로 돌출되게 구비되며, 상기 배출홀이 길이 방향으로 형성된 노즐바디 및 상기 노즐바디의 상단부에 구비되며, 공기와 배가스가 혼합된 혼합가스가 배출되는 상기 공기혼합실의 혼합배출구를 향하는 방향으로 경사지게 구비되고, 상부가 개방되게 형성되어 배가스를 배출하는 경사파이프를 포함할 수 있다.In addition, the exhaust gas nozzle of the exhaust gas mixture supply unit according to an embodiment of the present invention, is provided to protrude into the inside of the air mixing chamber, the discharge hole is provided in the longitudinal direction of the nozzle body and the upper end of the nozzle body And, it is provided to be inclined in the direction toward the mixing outlet of the air mixing chamber in which the mixed gas is a mixture of air and exhaust gas, the upper portion may be formed to include an inclined pipe to discharge the exhaust gas.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 노즐바디는, 상기 공기혼합실의 공기유입구에서 혼합배출구로 향하는 방향에서, 상기 공기혼합실의 측벽부를 향하는 방향으로 일정 각도 기울어진 방향으로 상기 배출홀이 형성된 것을 특징으로 할 수 있다.In addition, the nozzle body of the exhaust gas mixing supply unit according to an embodiment of the present invention, the direction inclined at a predetermined angle in the direction toward the side wall portion of the air mixing chamber in the direction from the air inlet of the air mixing chamber toward the mixing outlet The discharge hole may be formed.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 노즐바디는 상기 배출홀이 상기 공기혼합실의 공기유입구에서 혼합배출구로 향하는 방향에 수직한 방향으로 상기 공기혼합실의 하벽부에 돌출되어 형성된 것을 특징으로 할 수 있다.In addition, the nozzle body of the exhaust gas mixing supply unit according to an embodiment of the present invention protrudes to the lower wall of the air mixing chamber in a direction perpendicular to the direction in which the discharge hole from the air inlet of the air mixing chamber toward the mixing outlet And may be formed.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 공기혼합실은, 일단부에 상기 공기유입구가 형성되고, 타단부에 상기 공기와 배가스가 혼합된 혼합가스가 배출되는 혼합배출구가 형성된 챔버바디 및 상기 챔버바디 내부에 구비되며, 상기 공기유입구에서 상기 혼합배출구로 향하는 방향으로 수평하게 형성된 가이드판을 포함할 수 있다.In addition, the air mixing chamber of the exhaust gas mixture supply unit according to an embodiment of the present invention, the air inlet is formed at one end, the chamber formed with a mixed outlet for discharging the mixed gas mixed with the air and exhaust gas at the other end It is provided inside the body and the chamber body, it may include a guide plate formed horizontally in the direction from the air inlet to the mixing outlet.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 가이드판은, 상기 챔버바디의 상하 방향으로 복수 개가 나란히 구비되며, 최하부에 구비된 가이드판에서 최상부에 구비된 가이드판으로 가면서 점점 상기 공기유입구에 인접하게 구비되는 것을 특징으로 할 수 있다.In addition, the guide plate of the exhaust gas mixture supply unit according to an embodiment of the present invention, the plurality of guide plates are provided side by side in the vertical direction of the chamber body, and gradually from the guide plate provided at the lowermost to the guide plate provided at the top It may be characterized in that it is provided adjacent to the air inlet.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛의 상기 가이드판은, 상기 배가스노즐에 인접하게 구비되는 일단부에 돌출탭이 구비되어 와류를 형성하는 것을 특징으로 할 수 있다.In addition, the guide plate of the exhaust gas mixture supply unit according to an embodiment of the present invention may be characterized in that the protrusion tab is provided at one end provided adjacent to the exhaust gas nozzle to form a vortex.
또한, 본 발명의 일 실시예에 따른 코크스 오븐은 상기 배가스 혼합공급유닛, 상기 배가스 혼합공급유닛의 타단부에 형성된 혼합배출구와 연결되어 배가스와 공기의 혼합기체를 전달받는 연소유닛 및 상기 연소유닛과 연결되며, 상기 배가스 혼합공급유닛으로 배가스를 순환 공급하고, 코크스가 장입되어 제공되는 탄화유닛을 포함할 수 있다.In addition, the coke oven according to an embodiment of the present invention is connected to the exhaust gas mixing supply unit, the mixing outlet formed in the other end of the exhaust gas mixing supply unit and the combustion unit and the combustion unit to receive a mixed gas of exhaust gas and air and It is connected, and may include a carbonization unit that is circulated supply of the exhaust gas to the exhaust gas mixture supply unit, the coke is charged.
또한, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 연소유닛은, 상기 배가스 혼합공급유닛과 연결되어 상기 혼합기체를 전달받으며, 상기 탄화유닛과 연결되는 연소실 및 상기 연소실과 연결되며, 상기 연소실로 추가 공기를 공급하는 추가공급배관을 포함할 수 있다.In addition, the combustion unit of the coke oven according to an embodiment of the present invention, connected to the exhaust gas mixing supply unit receives the mixed gas, is connected to the combustion chamber and the combustion chamber connected to the carbonization unit, to the combustion chamber It may include additional supply piping for supplying additional air.
또한, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 탄화유닛은, 상기 연소실과 연결되며, 코크스가 장입되는 탄화실, 복수 개의 상기 탄화실과 연결되어, 상기 탄화실에서 배출되는 배가스를 외부로 배출하는 굴뚝부재 및 상기 굴뚝부재와 연결되며, 상기 배가스의 일부를 상기 배가스 혼합공급유닛으로 공급하는 순환팬을 포함할 수 있다.In addition, the carbonization unit of the coke oven according to an embodiment of the present invention is connected to the combustion chamber, the carbonization chamber in which coke is charged, connected to the plurality of carbonization chamber, discharge the exhaust gas discharged from the carbonization chamber to the outside Is connected to the chimney member and the chimney member, and may include a circulation fan for supplying a portion of the exhaust gas to the exhaust gas mixture supply unit.
또한, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 배가스 혼합공급유닛은, 상기 배가스노즐과 상기 순환팬 사이에 구비되는 오리피스부재를 포함하며, 상기 오리피스부재는, 복수 개가 구비되는 상기 연소실들에 대응하게 복수 개가 구비되며, 상기 순환팬에 최인접한 연소실에 연계된 오리피스부재 및 상기 순환팬에서 최외각에 구비된 연소실에 연계된 오리피스부재로 갈수록 배가스가 통과하는 홀단면적을 작게 형성하여, 상기 연소실들이 서로 균일한 유량의 배가스를 공급받도록 제공되는 것을 특징으로 할 수 있다.In addition, the exhaust gas mixing supply unit of the coke oven according to an embodiment of the present invention, comprises an orifice member provided between the exhaust gas nozzle and the circulation fan, the orifice member, the plurality of combustion chambers are provided Correspondingly, a plurality of dogs are provided, and the orifice member connected to the combustion chamber closest to the circulation fan and the orifice member connected to the combustion chamber provided at the outermost portion of the circulation fan are formed to have a smaller hole cross-sectional area through which exhaust gas passes, They may be provided so as to be supplied with the exhaust gas of a uniform flow rate to each other.
본 발명의 배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐은 연소를 위하여 배가스와 공기를 균일하게 혼합하여 제공할 수 있어서, 연소를 지연시키거나 불완전연소를 유도하는 효율을 높여서 질소산화물의 발생을 저감시킬 수 있는 효과가 있다.The exhaust gas mixing supply unit of the present invention and the coke oven including the same can be provided by uniformly mixing the exhaust gas and air for combustion, thereby reducing the generation of nitrogen oxides by increasing the efficiency of delaying combustion or inducing incomplete combustion. It can be effective.
그리고 본 발명의 배가스 혼합공급유닛 및 이를 포함하는 코크스 오븐은 불완전연소 이후에 추가적으로 별도로 공기를 공급하여 완전연소로 완료시킴으로써, 연소 효율도 확보할 수 있는 이점이 있다.In addition, the exhaust gas mixing supply unit of the present invention and the coke oven including the same are additionally supplied after the incomplete combustion to complete the combustion completely, there is an advantage that can ensure the combustion efficiency.
다만, 본 발명의 다양하면서도 유익한 장점과 효과는 상술한 내용에 한정되지 않으며, 본 발명의 구체적인 실시 형태를 설명하는 과정에서 보다 쉽게 이해될 수 있을 것이다.However, various and advantageous advantages and effects of the present invention are not limited to the above description, and will be more readily understood in the course of describing specific embodiments of the present invention.
도 1은 본 발명의 코크스 오븐을 도시한 측면도이다.1 is a side view showing a coke oven of the present invention.
도 2는 본 발명의 배가스 혼합공급유닛을 도시한 사시도이다.Figure 2 is a perspective view of the exhaust gas mixture supply unit of the present invention.
도 3은 본 발명의 배가스 혼합공급유닛을 도시한 측면도이다.Figure 3 is a side view showing the exhaust gas mixture supply unit of the present invention.
도 4는 본 발명의 배가스 혼합공급유닛에서 배가스노즐을 도시한 사시도이다.Figure 4 is a perspective view of the exhaust gas nozzle in the exhaust gas mixture supply unit of the present invention.
도 5는 본 발명의 배가스 혼합공급유닛의 혼합배출구에서 배출되는 배가스의 분포를 나타낸 그래프이다.Figure 5 is a graph showing the distribution of the exhaust gas discharged from the mixing outlet of the exhaust gas mixture supply unit of the present invention.
도 6은 본 발명과 종래의 질소산화물 발생률을 비교하여 나타낸 그래프이다.6 is a graph showing a comparison between the present invention and the conventional nitrogen oxide generation rate.
도 7은 본 발명과 종래의 불완전 연소 발생률을 비교하여 나타낸 그래프이다.7 is a graph showing a comparison between the present invention and the conventional incomplete combustion rate.
이하에서는 도면을 참조하여 본 발명의 구체적인 실시예를 상세하게 설명한다. 다만, 본 발명의 사상은 제시되는 실시예에 제한되지 아니하고, 본 발명의 사상을 이해하는 당업자는 동일한 사상의 범위 내에서 다른 구성요소를 추가, 변경, 삭제 등을 통하여, 퇴보적인 다른 발명이나 본 발명 사상의 범위 내에 포함되는 다른 실시예를 용이하게 제안할 수 있을 것이나, 이 또한 본원 발명 사상 범위 내에 포함된다고 할 것이다.Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be readily proposed, but they will also be included within the scope of the inventive concept.
또한, 각 실시예의 도면에 나타나는 동일한 사상의 범위 내의 기능이 동일한 구성요소는 동일한 참조부호를 사용하여 설명한다.In addition, the components with the same functions within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.
본 발명의 배가스 혼합공급유닛(100) 및 이를 포함하는 코크스 오븐은 연소를 위하여 배가스와 공기를 균일하게 혼합하여 제공할 수 있어서, 연소를 지연시키거나 불완전연소를 유도하는 효율을 높여서 질소산화물의 발생을 저감시키는 효과를 높일 수 있다.The exhaust gas mixing supply unit 100 and the coke oven including the same can be provided by uniformly mixing the exhaust gas and air for combustion, thereby increasing the efficiency of delaying combustion or inducing incomplete combustion to generate nitrogen oxides. The effect of reducing this can be enhanced.
구체적으로, 도 1은 본 발명의 코크스 오븐을 도시한 측면도이며, 도 7은 본 발명과 종래의 불완전 연소 발생률을 비교하여 나타낸 그래프이다.Specifically, Figure 1 is a side view showing a coke oven of the present invention, Figure 7 is a graph showing the comparison between the present invention and the conventional incomplete combustion rate.
도 1 및 도 7을 참조하면, 본 발명의 일 실시예에 따른 코크스 오븐은 배가스 혼합공급유닛(100), 상기 배가스 혼합공급유닛(100)의 타단부에 형성된 혼합배출구(111b)와 연결되어 배가스와 공기의 혼합기체를 전달받는 연소유닛(200) 및 상기 연소유닛(200)과 연결되며, 상기 배가스 혼합공급유닛(100)으로 배가스를 순환 공급하고, 코크스가 장입되어 제공되는 탄화유닛(300)을 포함할 수 있다.1 and 7, the coke oven according to an embodiment of the present invention is connected to the exhaust gas mixing supply unit 100 and the mixing outlet 111b formed at the other end of the exhaust gas mixing supply unit 100 to exhaust gas. And a carbonization unit 300 connected to the combustion unit 200 and the combustion unit 200 that receives a mixed gas of air and air, and circulates and supplies exhaust gas to the exhaust gas mixing supply unit 100, and is supplied with coke. It may include.
여기서 상기 배가스 혼합공급유닛(100)은 공급되는 배가스를 공기와 균일하게 혼합할 수 있는 배가스노즐(120)을 구비함으로써, 상기 배가스와 상기 공기의 혼합가스가 균일하게 배가스를 포함하게 제공할 수 있다.Here, the exhaust gas mixing supply unit 100 may include an exhaust gas nozzle 120 capable of uniformly mixing the supplied exhaust gas with air, thereby providing the exhaust gas and the mixed gas of the air uniformly including the exhaust gas. .
이에 의해서, 상기 혼합가스를 전달받은 상기 연소유닛(200)에서는 균일하게 연소 지연 또는 불완전 연소가 수행됨에 따라 연소 온도를 일정 범위로 한정하게 되고, 이에 따라 고온에서 발생하게 되는 질소산화물의 발생을 저감시킬 수 있게 되며, 공기는 완전히 연소에 사용하게 유도할 수 있다.As a result, in the combustion unit 200 receiving the mixed gas, as combustion delay or incomplete combustion is uniformly performed, the combustion temperature is limited to a certain range, thereby reducing the generation of nitrogen oxide generated at a high temperature. And the air can be directed to use for combustion completely.
이와 같이 상기 배가스 혼합공급유닛(100)은 공기와 배가스의 혼합을 균일하게 수행시키는 역할을 하게 되는데, 이에 대한 자세한 설명은 도 2 내지 도 6을 참조하여 후술한다.As described above, the exhaust gas mixture supply unit 100 serves to uniformly mix air and exhaust gas, which will be described later with reference to FIGS. 2 to 6.
한편, 상기 배가스 혼합공급유닛(100)은 오리피스부재(130)를 포함하여, 상기 연소유닛(200)이 복수 개로 제공될 때, 복수 개의 상기 연소유닛(200)으로 공급될 혼합기체를 균일하게 공급하게 된다.On the other hand, the exhaust gas mixture supply unit 100 includes an orifice member 130, when the combustion unit 200 is provided in plural, uniformly supply the mixed gas to be supplied to the plurality of combustion unit 200 Done.
다시 말해, 상기 배가스 혼합공급유닛(100)이 상기 연소유닛(200)에 대응하게 복수 개로 제공될 때, 각각의 상기 배가스 혼합공급유닛(100)에 구비되는 상기 오리피스부재(130)에 의해서, 각각의 상기 배가스 혼합공급유닛(100)은 균일한 유량의 배가스를 전달받게 되는 것이다.In other words, when the exhaust gas mixture supply unit 100 is provided in plural in correspondence with the combustion unit 200, by the orifice member 130 provided in each of the exhaust gas mixture supply unit 100, respectively, The exhaust gas mixture supply unit 100 is to receive the exhaust gas of a uniform flow rate.
이를 위해서, 상기 오리피스부재(130)는 상기 탄화유닛(300)의 순환팬(330)에 최근접한 배가스 혼합공급유닛(100)에 구비된 오리피스부재(130)의 오리피스홀(130a)과 상기 탄화유닛(300)의 순환팬(330)에 최외곽에 위치하는 배가스 혼합공급유닛(100)에 구비된 오리피스부재(130)의 오리피스홀(130a)이 가장 직경이 작게 제공된다.To this end, the orifice member 130 is orifice hole 130a and the carbonization unit of the orifice member 130 provided in the exhaust gas mixture supply unit 100 closest to the circulation fan 330 of the carbonization unit 300 The orifice hole 130a of the orifice member 130 provided in the exhaust gas mixing supply unit 100 positioned at the outermost portion of the circulation fan 330 of 300 is provided with the smallest diameter.
그리고, 최인접 오리피스부재(130) 및 최외곽 오리피스부재(130) 사이에 위치하는 중앙의 오리피스부재(130)의 오리피스홀(130a)이 가장 크게 형성된다. 나머지 오리피스부재(130)들의 오리피스홀(130a)은 최인접에서 중앙으로 갈수록 점점 직경이 커지고, 중앙에서 최외곽으로 갈수록 점점 직경이 작아지게 구비된다.In addition, the orifice hole 130a of the central orifice member 130 positioned between the closest orifice member 130 and the outermost orifice member 130 is largest. Orifice holes (130a) of the remaining orifice member 130 is provided with a diameter gradually increasing from the closest to the center, and gradually smaller toward the outermost from the center.
다시 말해, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 배가스 혼합공급유닛(100)은, 상기 배가스노즐(120)과 상기 순환팬(330) 사이에 구비되는 오리피스부재(130)를 포함하며, 상기 오리피스부재(130)는, 복수 개가 구비되는 상기 연소실(210)들에 대응하게 복수 개가 구비되며, 상기 순환팬(330)에 최인접한 연소실(210)에 연계된 오리피스부재(130) 및 상기 순환팬(330)에서 최외각에 구비된 연소실(210)에 연계된 오리피스부재(130)로 갈수록 배가스가 통과하는 홀단면적을 작게 형성하여, 상기 연소실(210)들이 서로 균일한 유량의 배가스를 공급받도록 제공되는 것을 특징으로 할 수 있다.In other words, the exhaust gas mixing supply unit 100 of the coke oven according to an embodiment of the present invention includes an orifice member 130 provided between the exhaust gas nozzle 120 and the circulation fan 330, The orifice member 130 is provided with a plurality of corresponding to the combustion chamber 210 is provided with a plurality, orifice member 130 and the circulation associated with the combustion chamber 210 closest to the circulation fan 330 From the fan 330 to the orifice member 130 connected to the combustion chamber 210 provided at the outermost portion to form a smaller hole cross-sectional area through which the exhaust gas passes, so that the combustion chamber 210 to receive the exhaust gas of a uniform flow rate to each other It may be characterized as being provided.
이에 의해서, 배가스의 유량을 균일하게 복수 개의 배가스 혼합공급유닛(100)으로 공급할 수 있게 된다.As a result, the flow rate of the exhaust gas can be uniformly supplied to the plurality of exhaust gas mixture supply units 100.
이와 같이 균일하게 배가스 유량을 공급할 수 있는 이유는 상기 순환팬(330)에서 최외곽에 위치에서는 배가스가 더이상 이동하지 못하고 체류하게 됨으로써, 최외곽 부분에서 유량이 커지므로, 최외곽 부분에 위치한 오리피스부재(130)의 직경을 가운데 부분에 인접한 부분에 위치한 오리피스부재(130)의 직경보다 작게 형성한 것이다.The reason for uniformly supplying the exhaust gas flow rate is that the exhaust gas is no longer moved at the outermost position in the circulation fan 330 so that the flow rate is increased at the outermost portion, so that the orifice member is positioned at the outermost portion. The diameter of the 130 is smaller than the diameter of the orifice member 130 located in the portion adjacent to the center.
또한, 상기 순환팬(330)에서 최인접한 위치에서는 어디로든 배가스가 공급되지 않았으므로, 가운데 부분에 인접한 위치보다 배가스의 유량이 많으므로, 최인접 부분에 위치한 오리피스부재(130)의 직경을 가운데 부분에 인접한 부분에 위치한 오리피스부재(130)의 직경보다 작게 형성한 것이다.In addition, since the exhaust gas is not supplied anywhere in the position closest to the circulation fan 330, since the flow rate of the exhaust gas is larger than the position adjacent to the center portion, the diameter of the orifice member 130 located in the closest portion to the center portion It is formed smaller than the diameter of the orifice member 130 located in the portion adjacent to.
상기 연소유닛(200)은 상기 배가스 혼합공급유닛(100)에서 공기와 배가스가 혼합된 혼합기체를 전달받아 연료 기체와 연소시키는 역할을 하게 된다.The combustion unit 200 receives the mixed gas in which air and the exhaust gas are mixed from the exhaust gas mixture supplying unit 100 to perform combustion with the fuel gas.
특히, 상기 연소유닛(200)은 배가스와 균일하게 혼합되어 산소의 농도가 낮은 혼합기체를 전달받기 때문에, 연료 기체와의 연소시에 산소의 부족에 의한 불완전 연소나 연소 지연이 발생할 수 있다.In particular, since the combustion unit 200 is uniformly mixed with the exhaust gas and receives a mixed gas having a low oxygen concentration, incomplete combustion or a combustion delay may occur due to the lack of oxygen when burning the fuel gas.
이에 의하면, 상기 연소유닛(200)에서 발생하는 온도가 일정 온도로 제한되고, 산소의 부족으로 인하여 질소와 산소의 결합에 의한 질소산화물의 생성을 억제하게 된다.According to this, the temperature generated in the combustion unit 200 is limited to a certain temperature, and the generation of nitrogen oxides by the combination of nitrogen and oxygen is suppressed due to the lack of oxygen.
다만, 이러한 혼합기체에 의한 연소는 1단계의 연소이며, 이후에 추가로 공기가 공급됨으로써, 2단계 연소를 수행하여 불완전 연소에서 발생한 일산화탄소를 완전 연소시켜 이산화탄소로 형성하게 된다.However, the combustion by the mixed gas is one stage of combustion, after which additional air is supplied, thereby performing two stages of combustion to completely burn carbon monoxide generated from incomplete combustion to form carbon dioxide.
다시 말해, 본 발명의 코크스 오븐은 이와 같은 공기의 부족으로 인한 불완전 연소된 일산화탄소를 완전 연소시키도록 상기 혼합가스에 의한 연소 이후에 추가로 공기를 공급하여 상기 첫번째 연소 이후에 완전 연소를 유도하는 두번째 연소를 수행하게 되며, 이를 위해서, 상기 연소유닛(200)은 연소실(210)과 추가공급배관(220)을 구비할 수 있다.In other words, the coke oven of the present invention provides a second supply of additional air after combustion by the mixed gas to completely burn incompletely burned carbon monoxide due to such a lack of air, thereby inducing a complete combustion after the first combustion. Combustion is performed, and for this purpose, the combustion unit 200 may include a combustion chamber 210 and an additional supply pipe 220.
즉, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 연소유닛(200)은, 상기 배가스 혼합공급유닛(100)과 연결되어 상기 혼합기체를 전달받으며, 상기 탄화유닛(300)과 연결되는 연소실(210) 및 상기 연소실(210)과 연결되며, 상기 연소실(210)로 추가 공기를 공급하는 추가공급배관(220)을 포함할 수 있다.That is, the combustion unit 200 of the coke oven according to an embodiment of the present invention is connected to the exhaust gas mixing supply unit 100 receives the mixed gas, the combustion chamber connected to the carbonization unit 300 ( 210 and an additional supply pipe 220 which is connected to the combustion chamber 210 and supplies additional air to the combustion chamber 210.
여기서, 상기 추가공급배관(220)은 상기 배가스 혼합공급유닛(100)보다 상기 탄화유닛(300)에 인접한 연소실(210)의 부분에 구비된다. 이에 의해서, 상기 배가스 혼합공급유닛(100)에서 공급한 혼합기체에 의해서 1단계 연소 후에 발생한 일산화탄소를 상기 추가공급배관(220)에서 공급한 추가 공기로 완전 연소를 시키게 된다.Here, the additional supply pipe 220 is provided in the portion of the combustion chamber 210 adjacent to the carbonization unit 300 than the exhaust gas mixture supply unit 100. As a result, the carbon monoxide generated after the first stage combustion by the mixed gas supplied from the exhaust gas mixing and supplying unit 100 is completely combusted with the additional air supplied from the additional supply pipe 220.
그리고, 상기 추가공급배관(220)은 공급되는 공기를 조정하기 위해서 추가공기 조정밸브가 결합되어 제공될 수 있다.In addition, the additional supply pipe 220 may be provided with an additional air control valve is coupled to adjust the air supplied.
이러한 추가공급배관(220)에 의한 2단계 추가 공기의 공급에 의한 완전 연소의 효과는 도 7에서 확인할 수 있다.The effect of the complete combustion by the supply of the second stage additional air by this additional supply pipe 220 can be seen in FIG.
즉, 도 7을 보면 본 발명의 배가스 혼합공급유닛(100)을 통하여 1단계 공기와 배가스를 혼합하여 1차 연소한 경우에 대략 250 ppm의 일산화탄소가 잔존하고 있으나, 추가공급배관(220)에 의해 2단계 추가 공기를 공급하여 2차 연소하면 일산화탄소가 거의 발생하지 않음을 알 수 있다.That is, referring to Figure 7, carbon monoxide of approximately 250 ppm when the first combustion by mixing the first stage air and the exhaust gas through the exhaust gas mixture supply unit 100 of the present invention, but by the additional supply pipe 220 It can be seen that carbon monoxide is hardly generated when the secondary combustion is performed by supplying the second stage of additional air.
상기 탄화유닛(300)은 코크스가 장입되며, 상기 연소유닛(200)에서 열을 전달받아 상기 코크스를 건류하는 역할을 하게 된다.The carbonization unit 300 is charged with coke, and receives the heat from the combustion unit 200 serves to carbonize the coke.
특히, 상기 탄화유닛(300)은 상기 연소유닛(200)에서 열을 전달할 때 함께 전달되는 배가스를 상기 배가스 혼합공급유닛(100)으로 순환시키는 역할도 하게 된다. 이를 위해서, 상기 탄화유닛(300)은 탄화실(310), 굴뚝부재(320), 순환팬(330)을 포함할 수 있다. In particular, the carbonization unit 300 also serves to circulate the exhaust gas delivered together when transferring heat from the combustion unit 200 to the exhaust gas mixture supply unit 100. To this end, the carbonization unit 300 may include a carbonization chamber 310, a chimney member 320, a circulation fan 330.
다시 말해, 본 발명의 일 실시예에 따른 코크스 오븐의 상기 탄화유닛(300)은, 상기 연소실(210)과 연결되며, 코크스가 장입되는 탄화실(310), 복수 개의 상기 탄화실(310)과 연결되어, 상기 탄화실(310)에서 배출되는 배가스를 외부로 배출하는 굴뚝부재(320) 및 상기 굴뚝부재(320)와 연결되며, 상기 배가스의 일부를 상기 배가스 혼합공급유닛(100)으로 공급하는 순환팬(330)을 포함할 수 있다.In other words, the carbonization unit 300 of the coke oven according to an embodiment of the present invention is connected to the combustion chamber 210, the carbonization chamber 310, the plurality of carbonization chamber 310 and the coke is charged Is connected, connected to the chimney member 320 and the chimney member 320 for discharging the exhaust gas discharged from the carbonization chamber 310 to the outside, to supply a portion of the exhaust gas to the exhaust gas mixture supply unit 100 The circulation fan 330 may be included.
상기 탄화실(310)은 상기 연소실(210)에서 연소된 열을 전달받으며, 코크스가 장입되어 열에 의해서 건류시키게 된다.The carbonization chamber 310 receives the heat burned from the combustion chamber 210, and the coke is charged and carbonized by heat.
이를 위해서, 상기 탄화실(310)은 상기 연소실(210)에서 열을 전달받을 수 있도록 연통되게 구비되며, 상기 연소실(210)에서 전달받은 배가스를 배출할 수 있는 폐기변이 구비될 수 있다.To this end, the carbonization chamber 310 may be provided in communication so as to receive heat from the combustion chamber 210, and may be provided with a waste stool capable of discharging the exhaust gas received from the combustion chamber 210.
상기 굴뚝부재(320)는 상기 탄화실(310)의 폐기변에서 배가스를 전달받아 외부로 배출하는 역할을 하게 되며, 이때 상기 배가스 중에 일부는 상기 배가스 혼합공급유닛(100)으로 순환하여 공기와 혼합된 후에 다시 연소유닛(200)으로 공급된다.The chimney member 320 receives the exhaust gas from the waste valve of the carbonization chamber 310 and discharges it to the outside. At this time, some of the exhaust gas is circulated to the exhaust gas mixture supply unit 100 and mixed with air. After it is supplied to the combustion unit 200 again.
상기 순환팬(330)은 상기 굴뚝부재(320)로 제공된 배가스 중에 일부를 상기 배가스 혼합공급유닛(100)으로 순환시키는 역할을 하게 된다.The circulation fan 330 serves to circulate a portion of the exhaust gas provided to the chimney member 320 to the exhaust gas mixture supply unit 100.
이를 위해서, 상기 순환팬(330)은 상기 굴뚝부재(320)와 상기 배가스 혼합공급유닛(100)으로 통하는 배관 상에 구비되어 상기 배가스 혼합공급유닛(100)으로 공급되는 유동을 형성하게 된다.To this end, the circulation fan 330 is provided on the pipe communicating with the chimney member 320 and the exhaust gas mixture supply unit 100 to form a flow supplied to the exhaust gas mixture supply unit 100.
도 2는 본 발명의 배가스 혼합공급유닛(100)을 도시한 사시도이며, 도 3은 본 발명의 배가스 혼합공급유닛(100)을 도시한 측면도이다.2 is a perspective view showing the exhaust gas mixture supply unit 100 of the present invention, Figure 3 is a side view showing the exhaust gas mixture supply unit 100 of the present invention.
그리고, 도 5는 본 발명의 배가스 혼합공급유닛(100)의 혼합배출구(111b)에서 배출되는 배가스의 분포를 나타낸 그래프이고, 도 6은 본 발명과 종래의 질소산화물 발생률을 비교하여 나타낸 그래프이다.And, Figure 5 is a graph showing the distribution of the exhaust gas discharged from the mixed outlet 111b of the exhaust gas mixture supply unit 100 of the present invention, Figure 6 is a graph showing the comparison of the nitrogen oxide generation rate of the present invention and the conventional.
도 2, 도 3, 도 5 및 도 6을 참조하면, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)은 연소를 위한 공기가 유입되는 공기유입구(111a)가 일단부에 형성된 공기혼합실(110) 및 상기 공기유입구(111a)에 인접하여 구비되며, 배가스가 유입되게 구비되고, 상기 공기혼합실(110)의 내부로 돌출되게 구비되며, 길이 방향으로 다수의 배출홀(121)이 형성된 배가스노즐(120)을 포함할 수 있다.2, 3, 5 and 6, in the exhaust gas mixture supply unit 100 according to an embodiment of the present invention, the air inlet 111a through which air for combustion flows is formed at one end of the air mixture It is provided adjacent to the chamber 110 and the air inlet 111a, the exhaust gas is provided to flow in, is provided to protrude into the inside of the air mixing chamber 110, a plurality of discharge holes 121 in the longitudinal direction The exhaust gas nozzle 120 may be formed.
상기 공기혼합실(110)은 공기가 유입되며, 상기 배가스노즐(120)에서 유입되는 배가스가 혼합되는 챔버의 역할을 하게 된다. 특히, 상기 배가스노즐(120)이 상기 배가스가 공급되는 유로를 다 방향으로 형성함으로써, 상기 배가스와 상기 공기의 혼합 효율을 높이게 된다.Air is introduced into the air mixing chamber 110, and serves as a chamber in which the exhaust gas introduced from the exhaust gas nozzle 120 is mixed. In particular, the exhaust gas nozzle 120 forms a flow path through which the exhaust gas is supplied in multiple directions, thereby increasing the mixing efficiency of the exhaust gas and the air.
이를 위해서, 상기 공기혼합실(110)은 상기 공기가 유입되는 공기유입구(111a)와 상기 공기와 배가스가 혼합된 혼합기체를 배출하는 혼합배출구(111b)가 형성된 챔버바디(111)를 포함할 수 있다. To this end, the air mixing chamber 110 may include a chamber body 111 having an air inlet 111a through which the air is introduced and a mixing outlet 111b for discharging the mixed gas in which the air and the exhaust gas are mixed. have.
여기서, 상기 공기유입구(111a)는 공기공급부(140)를 통하여 공기를 공급받게 되며, 상기 공기공급부(140)는 외부에서 공기를 유입시키기 위해서 공급팬을 더 포함할 수도 있고, 공급되는 공기의 유량을 조정하기 위해서 공기공급 조절밸브를 포함할 수도 있다.Here, the air inlet 111a receives air through the air supply unit 140, and the air supply unit 140 may further include a supply fan for introducing air from the outside, and the flow rate of the supplied air. It may include an air supply control valve to adjust the pressure.
그리고, 상기 공기혼합실(110)에는 상기 공기와 상기 배가스의 혼합 효율을 높이기 위해서, 가이드판(112)이 더 구비될 수 있다.In addition, the air mixing chamber 110 may further include a guide plate 112 to increase the mixing efficiency of the air and the exhaust gas.
다시 말해, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 공기혼합실(110)은, 일단부에 상기 공기유입구(111a)가 형성되고, 타단부에 상기 공기와 배가스가 혼합된 혼합가스가 배출되는 혼합배출구(111b)가 형성된 챔버바디(111) 및 상기 챔버바디(111) 내부에 구비되며, 상기 공기유입구(111a)에서 상기 혼합배출구(111b)로 향하는 방향으로 수평하게 형성된 가이드판(112)을 포함할 수 있다.In other words, the air mixing chamber 110 of the exhaust gas mixing supply unit 100 according to an embodiment of the present invention, the air inlet 111a is formed at one end, the air and the exhaust gas is mixed at the other end The chamber body 111 and the chamber body 111 in which the mixed discharge port 111b for discharging the mixed gas is discharged, and is formed horizontally in a direction from the air inlet 111a to the mixing discharge port 111b. The guide plate 112 may be included.
여기서, 상기 챔버바디(111)는 상기 공기와 상기 배가스가 혼합되는 공간을 제공하는 역할을 하게 된다. Here, the chamber body 111 serves to provide a space in which the air and the exhaust gas are mixed.
그리고, 상기 챔버바디(111)에 형성된 혼합배출구(111b)는 상기 연소유닛(200)의 연소실(210)로 혼합기체를 공급하게 되는데, 이때 공급되는 혼합기체를 상기 연소실(210)에서 균일하게 공급하기 위해서, 상기 연소실(210)을 향하여 혼합배출구(111b)를 일정 간격으로 복수 개를 형성할 수 있다.In addition, the mixing discharge port 111b formed in the chamber body 111 supplies the mixed gas to the combustion chamber 210 of the combustion unit 200. In this case, the mixed gas is uniformly supplied from the combustion chamber 210. To this end, a plurality of mixing outlets 111b may be formed toward the combustion chamber 210 at regular intervals.
상기 가이드판(112)은 상기 공기와 배가스를 혼합하는 효율을 높이는 역할과, 배가스와 공기가 혼합된 혼합기체를 복수 개의 혼합배출구(111b)로 균일 유량으로 향하게 유동을 형성하는 역할을 하게 된다.The guide plate 112 serves to increase the efficiency of mixing the air and the exhaust gas, and serves to form a flow of the mixed gas in which the exhaust gas and the air is mixed to a plurality of mixing outlets (111b) at a uniform flow rate.
우선 상기 가이드판(112)이 상기 배가스와 상기 공기의 혼합효율을 높이는 것은 상기 가이드판(112)이 와류를 형성함에 의해서 확보할 수 있는 이점이다. 다시 말해, 상기 가이드판(112)으로 상기 혼합기체가 유입되면 일 방향으로 형성되는 유동이 강하게 변형되면서 타 방향의 유동은 감소되게 되므로, 이때 저항에 의해서 와류가 형성될 수 있는 것이다.First, the guide plate 112 increases the mixing efficiency of the exhaust gas and the air is an advantage that the guide plate 112 can be secured by forming a vortex. In other words, when the mixed gas flows into the guide plate 112, the flow formed in one direction is strongly deformed and the flow in the other direction is reduced, so that the vortex may be formed by the resistance.
한편으로는, 상기 배가스와 공기가 상기 챔버바디(111) 내부로 유입되면서, 상기 가이드판(112)과 충돌에 의해서 유동 방향이 변형되면서 와류를 형성할 수도 있다. 이와 같은 충돌에 의한 와류 형성의 효과를 높이기 위해서, 상기 가이드판(112)의 일단부에는 돌출탭(112a)이 형성될 수 있다.On the other hand, as the exhaust gas and air are introduced into the chamber body 111, the flow direction is deformed by collision with the guide plate 112 may form a vortex. In order to increase the effect of the vortex formation due to such a collision, a protruding tab 112a may be formed at one end of the guide plate 112.
즉, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 가이드판(112)은, 상기 배가스노즐(120)에 인접하게 구비되는 일단부에 돌출탭(112a)이 구비되어 와류를 형성하는 것을 특징으로 할 수 있다.That is, the guide plate 112 of the exhaust gas mixture supply unit 100 according to an embodiment of the present invention is provided with a protrusion tab 112a at one end provided adjacent to the exhaust gas nozzle 120 to provide vortex flow. It may be characterized by forming.
또한, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 가이드판(112)은, 상기 챔버바디(111)의 상하 방향으로 복수 개가 나란히 구비되며, 최하부에 구비된 가이드판(112)에서 최상부에 구비된 가이드판(112)으로 가면서 점점 상기 공기유입구(111a)에 인접하게 구비되는 것을 특징으로 할 수 있다.In addition, the guide plate 112 of the exhaust gas mixture supply unit 100 according to an embodiment of the present invention, a plurality of guide plates 112 are provided side by side in the vertical direction of the chamber body 111, the guide plate 112 provided at the bottom At the top) to the guide plate 112 provided in the upper portion may be characterized in that it is gradually provided adjacent to the air inlet (111a).
이와 같이 상기 가이드판(112)을 배치하게 되면, 상기 챔버바디(111)의 길이 방향으로 복수 개가 형성된 혼합배출구(111b)의 형성 위치에 상관없이 균일한 유량으로 혼합기체를 공급할 수 있게 된다.When the guide plate 112 is disposed in this way, the mixed gas can be supplied at a uniform flow rate regardless of the formation position of the plurality of mixing discharge ports 111b formed in the longitudinal direction of the chamber body 111.
다시 말해, 도 3에 도시한 바와 같이, 상기 챔버바디(111) 내부에서 상층으로 이동한 공기와 혼합되는 배가스는 다시 내려오는 유동을 형성할 수 있으나, 최상부에 구비된 가이드판(112)은 상기 공기유입구(111a)와 배가스노즐(120)에 비교적 가까이 인접하게 제공됨으로써, 상기 배가스가 하층으로 내려가는 것을 먼저 방지하게 됨으로써, 혼합기체의 균일 분포 및 이를 상기 혼합배출구(111b)로 균일한 유량으로 공급할 수 있게 되는 것이다.In other words, as shown in Figure 3, the exhaust gas mixed with the air moved to the upper layer inside the chamber body 111 may form a flow back down, the top of the guide plate 112 is provided It is provided relatively close to the air inlet 111a and the exhaust gas nozzle 120 to prevent the exhaust gas from descending to the lower layer first, thereby providing a uniform distribution of the mixed gas and supplying it at a uniform flow rate to the mixing outlet 111b. It will be possible.
상기 배가스노즐(120)은 배가스를 상기 공기혼합실(110)로 공급하는 역할을 하게 된다. 특히, 상기 배가스노즐(120)은 복수 개의 유로를 형성하며 상기 배가스를 상기 공기혼합실(110)로 공급할 수 있기 때문에, 상기 공기와 배가스의 혼합 효율을 높이게 된다.The exhaust gas nozzle 120 serves to supply the exhaust gas to the air mixing chamber 110. In particular, since the exhaust gas nozzle 120 forms a plurality of flow paths and can supply the exhaust gas to the air mixing chamber 110, the exhaust gas nozzle 120 increases the mixing efficiency of the air and the exhaust gas.
이와 같이 본 발명의 배가스 혼합공급유닛(100)은 상기 배가스노즐(120)을 포함하고 있고, 이러한 배가스노즐(120)은 상기 공기혼합실(110)의 내부로 돌출되게 구비되면서, 배가스가 배출되는 다수의 배출홀(121)을 구비함으로써, 배가스의 유동을 분산 공급하여 상기 배가스와 상기 공기의 혼합 효율을 높이게 되는 것이다.Thus, the exhaust gas mixing supply unit 100 of the present invention includes the exhaust gas nozzle 120, the exhaust gas nozzle 120 is provided to protrude into the inside of the air mixing chamber 110, the exhaust gas is discharged By providing a plurality of discharge holes 121, the flow of the exhaust gas is distributed and supplied to increase the mixing efficiency of the exhaust gas and the air.
이러한 혼합 효율이 증가하는 점은 도 5에서 확인할 수 있다. 즉, 도 5는 공기혼합실(110)의 길이 방향의 두 줄(즉, 공기혼합실(110) 정면에서 보면 왼쪽 한 줄, 오른쪽 한 줄임)로 복수 개의 혼합배출구(111b)가 형성된 경우에, 상기 공기혼합실(110)의 길이 방향 방향으로 배출되는 혼합기체에서 이산화탄소인 배가스의 질량 분율을 나타낸 것인데, 이러한 그래프에서는 상기 공기혼합실(110)의 길이 방향으로 균일한 이산화탄소 질량 분율을 나타내고 있음을 알 수 있다. 다시 말해, 상기 공기와 배가스가 균일하게 혼합되었음을 알 수 있는 것이다.This increase in mixing efficiency can be seen in FIG. That is, FIG. 5 is a case where a plurality of mixing outlets 111b are formed in two lines in the longitudinal direction of the air mixing chamber 110 (that is, one left and one right lines when viewed from the front of the air mixing chamber 110). It shows the mass fraction of the exhaust gas which is carbon dioxide in the mixed gas discharged in the longitudinal direction of the air mixing chamber 110, the graph shows that the carbon dioxide mass fraction uniform in the longitudinal direction of the air mixing chamber 110. Able to know. In other words, it can be seen that the air and the exhaust gas is uniformly mixed.
일례로써, 도 6을 보면 본 발명의 상기 배가스노즐(120)을 통하여 배가스를 공급하게 되면, 본 발명의 배가스노즐(120)이 없는 일반조건에서보다 질소산화물의 발생률이 약 60 ppm 저감되는 것을 확인할 수 있다. 이는 공기 약 1531 N㎥/hr이고, 이 공기의 16%에 해당하는 약 250 N㎥/hr로 배가스를 공급하며, 배가스의 온도가 약 70℃인 조건에서의 질소산화물 발생 저감 효과를 비교한 것이다.As an example, referring to FIG. 6, when the exhaust gas is supplied through the exhaust gas nozzle 120 of the present invention, it is confirmed that the generation rate of nitrogen oxide is reduced by about 60 ppm than in the general condition without the exhaust gas nozzle 120 of the present invention. Can be. This is about 1531 Nm3 / hr of air and supplies flue gas at about 250 Nm3 / hr, corresponding to 16% of the air, and compares the effect of reducing nitrogen oxide generation under the condition that the temperature of flue gas is about 70 ℃. .
상기 배가스노즐(120)은 배가스와 공기의 혼합 효율을 높이기 위해서, 노즐바디(122), 경사파이프(123)를 포함할 수 있는데, 이에 대한 자세한 설명은 도 4를 참조하여 후술한다.The exhaust gas nozzle 120 may include a nozzle body 122 and an inclined pipe 123 to increase the mixing efficiency of the exhaust gas and air, which will be described later with reference to FIG. 4.
도 4는 본 발명의 배가스 혼합공급유닛(100)에서 배가스노즐(120)을 도시한 사시도로써, 이를 참조하면, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 배가스노즐(120)은, 상기 공기혼합실(110)의 내부로 돌출되게 구비되며, 상기 배출홀(121)이 길이 방향으로 형성된 노즐바디(122) 및 상기 노즐바디(122)의 상단부에 구비되며, 공기와 배가스가 혼합된 혼합가스가 배출되는 상기 공기혼합실(110)의 혼합배출구(111b)를 향하는 방향으로 경사지게 구비되고, 상부가 개방되게 형성되어 배가스를 배출하는 경사파이프(123)를 포함할 수 있다.4 is a perspective view showing the exhaust gas nozzle 120 in the exhaust gas mixture supply unit 100 of the present invention, referring to this, the exhaust gas nozzle 120 of the exhaust gas mixture supply unit 100 according to an embodiment of the present invention. ) Is provided to protrude into the inside of the air mixing chamber 110, the discharge hole 121 is provided in the nozzle body 122 and the upper end of the nozzle body 122 formed in the longitudinal direction, air and exhaust gas The gas mixture may be inclined in a direction toward the mixing discharge port 111b of the air mixing chamber 110 to discharge the mixed gas, and may include an inclined pipe 123 configured to open the upper portion to discharge the exhaust gas.
즉, 상기 배가스노즐(120)은 배가스와 공기의 혼합 효율을 높이기 위해서, 노즐바디(122), 경사파이프(123)를 포함할 수 있는 것이다.That is, the exhaust gas nozzle 120 may include a nozzle body 122 and an inclined pipe 123 to increase the mixing efficiency of the exhaust gas and air.
상기 노즐바디(122)는 순환팬(330)과 연결된 배관 등에서 배가스가 공급되는 구성이며, 상기 순환팬(330)과의 사이에 상기 오리피스부재(130)가 구비될 수도 있다.The nozzle body 122 has a configuration in which exhaust gas is supplied from a pipe connected to the circulation fan 330, and the orifice member 130 may be provided between the circulation fan 330.
그리고, 상기 노즐바디(122)에는 상기 배출홀(121)이 길이 방향으로 복수 개가 형성되어, 상기 노즐바디(122)로 유입된 배가스의 배출 유로를 복수 개로 형성하여 제공하게 된다. 이에 의해서, 상기 배가스는 상기 공기유입구(111a)로 유입되는 공기가 혼합 접촉될 유로를 더 많이 확보하는 것이 되어, 상기 공기와의 혼합 효율을 높이게 된다.In addition, a plurality of discharge holes 121 are formed in the nozzle body 122 in the longitudinal direction, and a plurality of discharge passages of the exhaust gas introduced into the nozzle body 122 are provided. As a result, the exhaust gas ensures more flow paths for the air flowing into the air inlet 111a to be mixed in contact with each other, thereby increasing the mixing efficiency with the air.
더하여, 상기 노즐바디(122)에 형성된 상기 배출홀(121)은 상기 공기유입구(111a)에서 상기 혼합배출구(111b)를 향하는 상기 공기혼합실(110)의 챔버바디(111)의 길이 방향으로 형성된 것이 아니고, 상기 챔버바디(111)의 길이 방향에서 일정 각도 측방으로 치우친 방향으로 형성될 수 있다. In addition, the discharge hole 121 formed in the nozzle body 122 is formed in the longitudinal direction of the chamber body 111 of the air mixing chamber 110 from the air inlet (111a) toward the mixing outlet (111b). Rather, the chamber body 111 may be formed in a direction inclined at a predetermined angle in the longitudinal direction of the chamber body 111.
이와 같이 상기 배출홀(121)이 상기 챔버바디(111)의 측벽을 향하여 일정 각도 기울어진 방향으로 형성되게 되면, 상기 배출홀(121)을 통하여 배출되는 배가스도 상기 측벽을 향하게 되며, 이에 따라 상기 배가스는 상기 챔버바디(111)의 측벽에 충돌되어 와류 형성으로 상기 공기와의 혼합 효율을 더 높이게 되는 것이다.As such, when the discharge hole 121 is formed in a direction inclined at an angle toward the side wall of the chamber body 111, the exhaust gas discharged through the discharge hole 121 also faces the side wall. The exhaust gas collides with the sidewall of the chamber body 111 to further increase the mixing efficiency with the air by forming a vortex.
이와 같이, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 노즐바디(122)는, 상기 공기혼합실(110)의 공기유입구(111a)에서 혼합배출구(111b)로 향하는 방향에서, 상기 공기혼합실(110)의 측벽부를 향하는 방향으로 일정 각도 기울어진 방향으로 상기 배출홀(121)이 형성된 것을 특징으로 할 수 있다.As such, the nozzle body 122 of the exhaust gas mixing and supplying unit 100 according to the embodiment of the present invention is in a direction from the air inlet 111a of the air mixing chamber 110 to the mixing outlet 111b. The discharge hole 121 may be formed in a direction inclined at a predetermined angle toward the side wall of the air mixing chamber 110.
그리고, 상기 노즐바디(122)는 상기 공기혼합실(110)의 챔버바디(111)에서 내부로 돌출되게 형성됨으로써, 길이 방향으로 형성된 배출홀(121)에서 분사되는 배가스가 상기 공기유입구(111a)를 통하여 유입되는 공기와의 혼합 효율을 높이게 된다.In addition, the nozzle body 122 is formed to protrude from the chamber body 111 of the air mixing chamber 110, so that the exhaust gas injected from the discharge hole 121 formed in the longitudinal direction of the air inlet 111a The mixing efficiency with the air introduced through the will be increased.
이와 같이, 본 발명의 일 실시예에 따른 배가스 혼합공급유닛(100)의 상기 노즐바디(122)는 상기 배출홀(121)이 상기 공기혼합실(110)의 공기유입구(111a)에서 혼합배출구(111b)로 향하는 방향에 수직한 방향으로 상기 공기혼합실(110)의 하벽부에 돌출되어 형성된 것을 특징으로 할 수 있다.As such, the nozzle body 122 of the exhaust gas mixing and supplying unit 100 according to an embodiment of the present invention has a discharge hole 121 at the air inlet 111a of the air mixing chamber 110. It may be characterized in that it is formed to protrude to the lower wall portion of the air mixing chamber 110 in a direction perpendicular to the direction toward 111b).
상기 경사파이프(123)는 상기 노즐바디(122)를 통하여 공급된 배가스 중 일부를 상기 공기혼합실(110)의 챔버바디(111) 상층으로 이동되게 유도하는 역할을 하게 된다. The inclined pipe 123 serves to guide a portion of the exhaust gas supplied through the nozzle body 122 to be moved to the upper layer of the chamber body 111 of the air mixing chamber 110.
즉, 상기 노즐바디(122)에 형성된 배출홀(121)은 상기 노즐바디(122)의 측방향으로 배가스의 유로를 유도할 뿐이므로, 상층으로 배가스의 유로를 유도하기 위해서 상기 경사파이프(123)가 구비되는 것이다.That is, since the discharge hole 121 formed in the nozzle body 122 only induces the flow path of the exhaust gas in the lateral direction of the nozzle body 122, the inclined pipe 123 to guide the flow path of the exhaust gas to the upper layer. Will be provided.
이를 위해서, 상기 경사파이프(123)는 상기 노즐바디(122)의 상단부에 구비되며, 상기 챔버바디(111)의 길이 방향으로 경사지게 구비되며, 상기 혼합배출구(111b)를 향하게 형성된다.To this end, the inclined pipe 123 is provided on the upper end of the nozzle body 122, is provided to be inclined in the longitudinal direction of the chamber body 111, is formed to face the mixing outlet 111b.

Claims (11)

  1. 연소를 위한 공기가 유입되는 공기유입구가 일단부에 형성된 공기혼합실; 및An air mixing chamber having an air inlet port through which air for combustion is introduced; And
    상기 공기유입구에 인접하여 구비되며, 배가스가 유입되게 구비되고, 상기 공기혼합실의 내부로 돌출되게 구비되며, 길이 방향으로 다수의 배출홀이 형성된 배가스노즐;An exhaust gas nozzle provided adjacent to the air inlet, provided to allow the exhaust gas to flow in, protruding into the air mixing chamber, and having a plurality of discharge holes in a longitudinal direction;
    을 포함하는 배가스 혼합공급유닛.Exhaust gas mixture supply unit comprising a.
  2. 제1항에 있어서,The method of claim 1,
    상기 배가스노즐은,The exhaust gas nozzle,
    상기 공기혼합실의 내부로 돌출되게 구비되며, 상기 배출홀이 길이 방향으로 형성된 노즐바디; 및A nozzle body provided to protrude into the inside of the air mixing chamber, and the discharge hole is formed in a longitudinal direction; And
    상기 노즐바디의 상단부에 구비되며, 공기와 배가스가 혼합된 혼합가스가 배출되는 상기 공기혼합실의 혼합배출구를 향하는 방향으로 경사지게 구비되고, 상부가 개방되게 형성되어 배가스를 배출하는 경사파이프;An inclined pipe which is provided at an upper end of the nozzle body and is inclined in a direction toward the mixing outlet of the air mixing chamber through which the mixed gas in which air and exhaust gas are mixed is discharged, the upper part of which is opened to discharge the exhaust gas;
    를 포함하는 배가스 혼합공급유닛.Exhaust gas mixture supply unit comprising a.
  3. 제2항에 있어서,The method of claim 2,
    상기 노즐바디는, 상기 공기혼합실의 공기유입구에서 혼합배출구로 향하는 방향에서, 상기 공기혼합실의 측벽부를 향하는 방향으로 일정 각도 기울어진 방향으로 상기 배출홀이 형성된 것을 특징으로 하는 배가스 혼합공급유닛.The nozzle body, the exhaust gas mixing supply unit, characterized in that the discharge hole is formed in a direction inclined at a predetermined angle in the direction toward the side wall portion of the air mixing chamber in the direction from the air inlet of the air mixing chamber to the mixing outlet.
  4. 제2항에 있어서,The method of claim 2,
    상기 노즐바디는 상기 배출홀이 상기 공기혼합실의 공기유입구에서 혼합배출구로 향하는 방향에 수직한 방향으로 상기 공기혼합실의 하벽부에 돌출되어 형성된 것을 특징으로 하는 배가스 혼합공급유닛.The nozzle body is an exhaust gas mixing supply unit, characterized in that the discharge hole is formed to protrude from the lower wall of the air mixing chamber in a direction perpendicular to the direction from the air inlet of the air mixing chamber toward the mixing outlet.
  5. 제1항에 있어서,The method of claim 1,
    상기 공기혼합실은, The air mixing chamber,
    일단부에 상기 공기유입구가 형성되고, 타단부에 상기 공기와 배가스가 혼합된 혼합가스가 배출되는 혼합배출구가 형성된 챔버바디; 및A chamber body in which one air inlet is formed at one end, and a mixing outlet for discharging the mixed gas in which the air and the exhaust gas are mixed at the other end is formed; And
    상기 챔버바디 내부에 구비되며, 상기 공기유입구에서 상기 혼합배출구로 향하는 방향으로 수평하게 형성된 가이드판;A guide plate provided in the chamber body and formed horizontally in a direction from the air inlet to the mixing outlet;
    을 포함하는 배가스 혼합공급유닛.Exhaust gas mixture supply unit comprising a.
  6. 제5항에 있어서,The method of claim 5,
    상기 가이드판은, 상기 챔버바디의 상하 방향으로 복수 개가 나란히 구비되며, 최하부에 구비된 가이드판에서 최상부에 구비된 가이드판으로 가면서 점점 상기 공기유입구에 인접하게 구비되는 것을 특징으로 하는 배가스 혼합공급유닛.The guide plate is provided in a plurality of side by side in the vertical direction of the chamber body, the exhaust gas mixture supply unit characterized in that it is gradually provided adjacent to the air inlet to the guide plate provided at the uppermost from the guide plate provided at the bottom .
  7. 제5항에 있어서,The method of claim 5,
    상기 가이드판은, 상기 배가스노즐에 인접하게 구비되는 일단부에 돌출탭이 구비되어 와류를 형성하는 것을 특징으로 하는 배가스 혼합공급유닛.The guide plate is provided with a protruding tab at one end provided adjacent to the exhaust gas nozzle to form a vortex gas mixture supply unit.
  8. 제1항 내지 제7항 중 어느 한 항의 배가스 혼합공급유닛;Claim 1 to claim 7, wherein the exhaust gas mixture supply unit of any one;
    상기 배가스 혼합공급유닛의 타단부에 형성된 혼합배출구와 연결되어 배가스와 공기의 혼합기체를 전달받는 연소유닛; 및A combustion unit connected to a mixing outlet formed at the other end of the exhaust gas mixing supply unit and receiving a mixed gas of exhaust gas and air; And
    상기 연소유닛과 연결되며, 상기 배가스 혼합공급유닛으로 배가스를 순환 공급하고, 코크스가 장입되어 제공되는 탄화유닛;A carbonization unit connected to the combustion unit and configured to circulate and supply exhaust gas to the exhaust gas mixture supply unit, and to be supplied with coke;
    을 포함하는 코크스 오븐.Coke oven comprising a.
  9. 제8항에 있어서,The method of claim 8,
    상기 연소유닛은,The combustion unit,
    상기 배가스 혼합공급유닛과 연결되어 상기 혼합기체를 전달받으며, 상기 탄화유닛과 연결되는 연소실; 및A combustion chamber connected to the exhaust gas mixing supply unit to receive the mixed gas and connected to the carbonization unit; And
    상기 연소실과 연결되며, 상기 연소실로 추가 공기를 공급하는 추가공급배관;An additional supply pipe connected to the combustion chamber and supplying additional air to the combustion chamber;
    을 포함하는 코크스 오븐.Coke oven comprising a.
  10. 제9항에 있어서,The method of claim 9,
    상기 탄화유닛은,The carbonization unit,
    상기 연소실과 연결되며, 코크스가 장입되는 탄화실;A carbonization chamber connected to the combustion chamber and into which coke is charged;
    복수 개의 상기 탄화실과 연결되어, 상기 탄화실에서 배출되는 배가스를 외부로 배출하는 굴뚝부재; 및A chimney member connected to a plurality of carbonization chambers and configured to discharge exhaust gas discharged from the carbonization chambers to the outside; And
    상기 굴뚝부재와 연결되며, 상기 배가스의 일부를 상기 배가스 혼합공급유닛으로 공급하는 순환팬;A circulation fan connected to the chimney member and supplying a part of the exhaust gas to the exhaust gas mixing supply unit;
    을 포함하는 코크스 오븐.Coke oven comprising a.
  11. 제10항에 있어서,The method of claim 10,
    상기 배가스 혼합공급유닛은, The exhaust gas mixture supply unit,
    상기 배가스노즐과 상기 순환팬 사이에 구비되는 오리피스부재;An orifice member provided between the exhaust gas nozzle and the circulation fan;
    를 포함하며,Including;
    상기 오리피스부재는, 복수 개가 구비되는 상기 연소실들에 대응하게 복수 개가 구비되며, 상기 순환팬에 최인접한 연소실에 연계된 오리피스부재 및 상기 순환팬에서 최외각에 구비된 연소실에 연계된 오리피스부재로 갈수록 배가스가 통과하는 홀단면적을 작게 형성하여, 상기 연소실들이 서로 균일한 유량의 배가스를 공급받도록 제공되는 것을 특징으로 하는 코크스 오븐.The orifice member is provided in plurality in correspondence with the plurality of combustion chambers, the orifice member associated with the combustion chamber closest to the circulation fan and the orifice member associated with the combustion chamber provided at the outermost part in the circulation fan. And forming a small hole cross-sectional area through which the exhaust gas passes, so that the combustion chambers are provided to be supplied with the exhaust gas at a uniform flow rate to each other.
PCT/KR2017/014882 2016-12-16 2017-12-15 Off-gas mixture supply unit and coke oven comprising same WO2018111047A1 (en)

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KR1020160172690A KR101858850B1 (en) 2016-12-16 2016-12-16 Mixing supply unit and cokes oven having thereof
KR10-2016-0172690 2016-12-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100243839B1 (en) * 1996-04-09 2000-03-02 와다 아끼히로 Combustion apparatus and thermal installation with the same
KR20040040577A (en) * 2002-11-07 2004-05-13 한국에너지기술연구원 premix type knitted metal fiber mat gas burner
KR100743192B1 (en) * 2006-07-10 2007-07-27 재단법인 포항산업과학연구원 Coke oven
KR20090131118A (en) * 2008-06-17 2009-12-28 주식회사 포스코 System for supplying gas into a combustion chamber of coke oven
KR101560886B1 (en) * 2013-11-07 2015-10-16 주식회사 포스코 Coke oven and method for injection of reaction gas in coke oven using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100243839B1 (en) * 1996-04-09 2000-03-02 와다 아끼히로 Combustion apparatus and thermal installation with the same
KR20040040577A (en) * 2002-11-07 2004-05-13 한국에너지기술연구원 premix type knitted metal fiber mat gas burner
KR100743192B1 (en) * 2006-07-10 2007-07-27 재단법인 포항산업과학연구원 Coke oven
KR20090131118A (en) * 2008-06-17 2009-12-28 주식회사 포스코 System for supplying gas into a combustion chamber of coke oven
KR101560886B1 (en) * 2013-11-07 2015-10-16 주식회사 포스코 Coke oven and method for injection of reaction gas in coke oven using the same

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