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KR20100006609A - A coal burner of unnecessary preheating coal dust by combustion method - Google Patents

A coal burner of unnecessary preheating coal dust by combustion method Download PDF

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Publication number
KR20100006609A
KR20100006609A KR1020080066795A KR20080066795A KR20100006609A KR 20100006609 A KR20100006609 A KR 20100006609A KR 1020080066795 A KR1020080066795 A KR 1020080066795A KR 20080066795 A KR20080066795 A KR 20080066795A KR 20100006609 A KR20100006609 A KR 20100006609A
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pulverized coal
coal
burner
oxygen
pipe
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Korean (ko)
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박대용
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박대용
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/10—Nozzle tips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

PURPOSE: A coal burner of pulverized coal combustion type without preheating is provided to send pulverized coal mixed with oxygen and hydrogen far by strong jetting power and to transmit the heating power to the wide portion of the combustion chamber. CONSTITUTION: A coal burner of pulverized coal combustion type without preheating is composed of hydrogen and air injection ports(9,10), an oxygen injection port(8), and a pulverized coal pipe(7a). The air injection port is connected to an air pipe(10a) positioned in the outermost rim. The hydrogen injection port is connected to a hydrogen pipe(9a) between the air pipe and an oxygen pipe(8a). The oxygen injection port is connected to the oxygen pipe. The outlet of the pulverized coal pipe is shaped like a horn-shaped protruded male spiral form. The pulverized coal pipe mixes hydrogen, oxygen, and combustion air by swirling the pulverized coal.

Description

예열이 필요없는 미분탄 연소방식의 석탄버너{A COAL BURNER OF UNNECESSARY PREHEATING COAL DUST BY COMBUSTION METHOD}Coal burner without coal preheating {A COAL BURNER OF UNNECESSARY PREHEATING COAL DUST BY COMBUSTION METHOD}

본 발명은 석탄을 연소하는 방식 중 석탄을 미세하게 분쇄한 미분탄을 연소하는 방식에 관한 것이다The present invention relates to a method of burning fine coal pulverized fine coal of the method of burning coal.

미분탄 연소 방식은 200mesh 이하의 입도까지 미분화시킨 석탄을 공기와 함께 버너에서 연소실내로 분사시켜 연소하는 방식으로, 다량의 석탄 연소와 신속한 자동 제어의 필요성 때문에 발전용 대형 보일러에서는 미분탄 연소방식을 채용하고 있다.The pulverized coal combustion method is a method in which the finely divided coal to the particle size of 200mesh or less is injected with the air and injected into the combustion chamber from the burner, and the pulverized coal combustion method is adopted in the large-scale boiler for power generation because of the large amount of coal combustion and the need for rapid automatic control. have.

기존의 석탄버너는 미분탄 자체만으로 착화, 연소가 불안정하므로 다른 연료를 사용해 로의 온도를 충분히 올린 상태에서 미분화시킨 석탄을 분무하여 내부온도에 의해 연소되도록 하는 방식이다. 그러므로 기존의 버너는 미분탄이 연소될 수 있도록 사전에 예열되는 시간이 필요하다.Existing coal burners are unstable in ignition and combustion only by pulverized coal itself, so that the fuel is burned by the internal temperature by spraying the finely divided coal while the furnace temperature is sufficiently raised using other fuels. Therefore, conventional burners require time to be preheated before the coal dust can be burned.

본 발명은 상기한 기존의 석탄버너가 예열되는 시간이 필요한 문제점을 해결하기 위하여 안출한 것으로, 초기 점화시 화염발생 방법에 관한 것이다.The present invention has been made in order to solve the problem that the time required for the conventional coal burner is preheated, and relates to a method of generating a flame during the initial ignition.

기존의 방식대로 사전 예열을 하지 않고 바로 미분탄을 분사하여 연소되도록 하여, 기존방식에서 고체연료인 미분탄이 연소되도록 하기 위하여 예열하는데 필요한 시간을 줄여 빠르게 버너로서의 기능을 수행할 수 있도록 하는데 목적이 있다.It is intended to perform the function as a burner by reducing the time required for preheating in order to burn the pulverized coal, which is a solid fuel in the conventional method, by burning the pulverized coal immediately without prior preheating according to the conventional method.

이를 위하여 산소와 수소기체를 매개체로 사용하며, 미분탄이 분사되는 즉시 산소와 수소기체 그리고 연소용 공기가 혼합된 상태에서 연소실에서 발화하여 바로 연소되도록 한다.For this purpose, oxygen and hydrogen gas are used as mediators, and as soon as pulverized coal is injected, it is ignited in the combustion chamber and mixed with oxygen and hydrogen gas and combustion air to be combusted immediately.

이때 분사력을 높이기 위하여, 버너 중심을 관통하는 관을 미분탄관으로 하고, 가장 바깥쪽에 연소용 공기관을 크게 두어, 미분탄과 매개체와 공기가 섞여 멀리 분사되도록 한다.At this time, in order to increase the injection force, the pulverized coal pipe through the center of the burner is made as a pulverized coal pipe, and the combustion air pipe is placed at the outermost, so that the pulverized coal, the medium and the air are mixed and injected far.

상기한 바와 같이, 본 고안에 따른 미분탄 연소방식의 석탄버너는 산소와 수 소기체를 매개체로 사용하여 기존의 버너처럼 예열되는 동안 기다리는 시간이 필요없이 즉각적으로 미분탄을 연소시키기 때문에 시간이 절약되고, 그로 인한 보일러의 성능향상과 효율성, 실용성, 경제성 면에서 기존 버너보다 우위를 확보할 수 있으며, 분사력이 강해 산소,수소와 섞인 미분탄을 멀리 보내거나, 연소실의 길이가 길어 넓은 부위에 화력을 전달하는데 유리하다.As described above, the coal burner of the pulverized coal combustion method according to the present invention saves time because it burns pulverized coal immediately without the need for waiting while it is preheated like a conventional burner using oxygen and hydrogen gas as a medium. As a result, the boiler has an advantage over existing burners in terms of performance, efficiency, practicality, and economic efficiency.The blowing force is strong to send pulverized coal mixed with oxygen and hydrogen, or to transmit fire power to a wide area due to the long combustion chamber. It is advantageous.

일반적인 미분탄 연소방식 보일러가 석탄을 버너에 까지 이동시키는 방식은 압입 통풍기와 공기예열기을 거친 더운 공기가 미분기에서 분쇄되는 석탄을 건조시키고, 미분탄 분리기에서 적절한 미분도로 조정된 미분탄을 미분탄 버너로 운송한다 Conventional pulverized coal-fired boilers transfer coal to the burner, where the hot air from the inlet ventilator and the air preheater dries the pulverized coal from the pulverized coal and delivers the pulverized coal adjusted to the appropriate pulverized coal in the pulverized coal burner.

이하 본 발명에 관하여 첨부 도면 도 1 내지 도 2를 참조하면서 설명한다Hereinafter, the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 2.

본 발명인 석탄버너는 미분기에서 분쇄된 석탄이 미분탄 분리기에서 적절한 미분도로 조정되어 석탄버너로 보내어져 연소하는 미분탄 연소방식의 석탄버너에 관한 것으로서, 특히 본 발명은 미분탄의 빠른 연소를 위한 매개체로 산소와 수소를 사용하는 장치에 관한 것이다.The coal burner of the present invention relates to a coal burner of a pulverized coal combustion method in which coal pulverized in the pulverized powder is adjusted to an appropriate fine powder in a pulverized coal separator and sent to a coal burner, and in particular, the present invention provides a medium for rapid combustion of pulverized coal. A device using hydrogen.

상기 목적을 달성하기 위하여 이루어진 본 고안에 따른 석탄버너(1)는 4중의 일체형 관 형태로서, 미분탄과 매개체와 공기를 주입하는 주입부와 이들이 방출되어 섞이는 노즐부로 구분할 수 있다.Coal burner 1 according to the present invention made to achieve the above object is a four-piece integral tube form, can be divided into the injection unit for injecting pulverized coal and the medium and air and the nozzle unit that is discharged and mixed.

버너를 관통하는 가장 안쪽 중심에 미분탄관(7a)이 있어서 미분탄이 버너의 후방 직선방향에 있는 미분탄 주입구(7)를 통하여 주입되어 미분탄관(7a)을 지나 미분탄배출구(11)를 통해 배출되고, 산소는 버너 후방의 상단에 있는 산소주입구(8)를 통하여 수직으로 주입되어 미분탄관(7a)과 수소관(9a) 사이에 있는 산소관(8a)를 지나 산소노즐(12)을 통과하게 되고, 수소는 버너 후방의 하단에 수직으로 되어있는 수소주입구(9)로 주입되어 산소관(8a)과 공기관(10a) 사이에 있는 수소관(9a)을 지나 수소노즐(13)을 통과하여 산소와 공기와 미분탄과 섞이게 되고, 버너의 가장 외곽부분에 주입구 중 가장 큰 형태의 공기관(10a)이 있어서 버너 상단에서 수직으로 되어있는 공기주입구(10)를 통해 주입된 연소용 공기가 공기관(10a)을 지나 미분탄과 수소와 산소와 섞여 연소를 돕는다.In the innermost center penetrating the burner has a pulverized coal pipe (7a) so that pulverized coal is injected through the pulverized coal inlet (7) in the rear linear direction of the burner and discharged through the pulverized coal outlet (11) through the pulverized coal pipe (7a), Oxygen is injected vertically through the oxygen inlet 8 at the upper end of the burner to pass the oxygen nozzle 12 through the oxygen tube 8a between the pulverized coal tube 7a and the hydrogen tube 9a, Hydrogen is injected into the hydrogen inlet 9, which is perpendicular to the lower end of the burner, and passes through the hydrogen nozzle 13 through the hydrogen tube 9a between the oxygen tube 8a and the air tube 10a. And is mixed with pulverized coal, and the combustion air injected through the air inlet 10 vertically from the top of the burner has an air pipe 10a of the largest type of inlet at the outermost part of the burner. Combustion with pulverized coal and mixed with hydrogen and oxygen To help.

미분탄이 배출되는 배출구(11)의 모양은 나팔형태의 돌출된 수나선형으로, 미분탄이 회오리처럼 회류하면서 배출되도록 하여 산소와 수소 그리고 연소용 공기와 원활이 섞이도록 한다.The shape of the outlet 11 in which the pulverized coal is discharged is a trumpet-shaped protruding male spiral, so that the pulverized coal is discharged while recirculating like a whirlwind, so that the pulverized coal is smoothly mixed with oxygen, hydrogen, and combustion air.

이때 보일러의 압입통풍기에 의해 발생한 강한 압력의 공기에 의해 이동되어지는 미분탄이 버너 중앙을 관통하는 직선통로의 미분탄관(7a)을 지나서 연소용 공기와 만나 강한 분사력을 유지하게 되어 연소 매개체와 섞인 상태에서 기존의 버너보다 멀리 보내어져 연소가 가능하게 된다.At this time, the pulverized coal moved by the high pressure air generated by the pressurized blower of the boiler passes through the pulverized coal pipe 7a of the straight passage passing through the center of the burner and meets the combustion air to maintain a strong blowing force, and is mixed with the combustion medium. Is sent farther than conventional burners, allowing combustion.

그래서 이 버너의 구조는 연소실의 길이를 길게 하여 넓은 면적에 열을 전달하려할 때 적합하다.The burner's structure is therefore suitable when the combustion chamber is to be lengthened to transfer heat over a large area.

도 1은 본 발명인 석탄버너를 각 방향에서 본 모습을 도시한 단면도 및 사시도1 is a cross-sectional view and a perspective view showing the appearance of the present inventors coal burner from each direction

도 2는 본 발명의 노즐부를 확대한 단면도 및 좌측면도Figure 2 is an enlarged cross-sectional view and left side view of the nozzle unit of the present invention

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1 : 석탄버너의 사시도 2 : 석탄버너의 평면도 1: perspective view of coal burner 2: top view of coal burner

3 : 석탄버너의 단면도 4 : 석탄버너의 정면도 3: Cross section of coal burner 4: Front view of coal burner

5 : 석탄버너의 좌측면도 6 : 석탄버너의 우측면도 5: left side view of coal burner 6: right side view of coal burner

7 : 미분탄 주입구 7a : 미분탄관 7: pulverized coal injection hole 7a: pulverized coal tube

8 : 산소주입구 8a : 산소관 8: oxygen inlet 8a: oxygen tube

9 : 수소주입구 9a : 수소관 9: hydrogen inlet 9a: hydrogen tube

10 : 공기주입구 10a : 공기관10: air inlet 10a: air pipe

11 : 수나선형 돌출부 12 : 산소 노즐 13 : 수소 노즐11: male spiral projection 12: oxygen nozzle 13: hydrogen nozzle

Claims (1)

버너의 상단에 연소용 공기의 주입을 위한 공기주입구(10)가 있고 버너의 가장 바깥테두리에 있는 공기관(10a)과 이어져 있으며, 버너의 하단에서 수직으로 위치한 수소주입구(9)는 공기관(10a)과 산소관(8a) 사이의 수소관(9a)과 이어져 있고, 버너의 상단에서 수직으로 위치한 산소주입구(8)는 수소관(9a)의 안쪽에 있는 산소관(8a)과 이어져 있고, 산소관(8a) 안쪽으로 버너의 중심을 관통하는 미분탄관(7a)이 있어 버너의 후방 직선방향에 있는 미분탄주입구(7)와 연결되고 미분탄이 배출되는 미분탄관(7a)의 배출구(11)는 나팔형태의 돌출된 수나선형으로 되어있어서 미분탄이 가운데서 회류하면서 수소와 산소와 연소용 공기가 섞이도록 하는 것을 특징으로 하는 예열이 필요없는 미분탄 연소방식의 석탄버너An air inlet 10 for injecting combustion air at the top of the burner is connected to an air pipe 10a at the outermost edge of the burner, and a hydrogen inlet 9 located vertically at the bottom of the burner is an air pipe 10a. And an oxygen inlet 8, which is vertically located at the top of the burner, is connected to an oxygen tube 8a between the oxygen tube 8a and an oxygen tube 8a inside the hydrogen tube 9a. (8a) There is a pulverized coal pipe 7a penetrating the center of the burner inward and connected to the pulverized coal inlet 7 in the rear straight direction of the burner, and the outlet 11 of the pulverized coal pipe 7a through which the pulverized coal is discharged is a trumpet type. Pre-heated coal-burning coal burner, characterized in that the protruding male spiral of the pulverized coal flows in the middle to mix hydrogen, oxygen and combustion air
KR1020080066795A 2008-07-10 2008-07-10 A coal burner of unnecessary preheating coal dust by combustion method Ceased KR20100006609A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102401373A (en) * 2010-09-09 2012-04-04 哈尔滨工业大学 Three-volute high temperature oxygen rich pulverized coal ignition device
CN113464932A (en) * 2021-08-12 2021-10-01 西安热工研究院有限公司 Pulverized coal fired boiler combustion system equipped with hydrogen on-duty flame for stable combustion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102401373A (en) * 2010-09-09 2012-04-04 哈尔滨工业大学 Three-volute high temperature oxygen rich pulverized coal ignition device
CN113464932A (en) * 2021-08-12 2021-10-01 西安热工研究院有限公司 Pulverized coal fired boiler combustion system equipped with hydrogen on-duty flame for stable combustion

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