SU909419A1

SU909419A1 - Cyclone-type dust coal fire box

Info

Publication number: SU909419A1
Application number: SU782572314A
Authority: SU
Inventors: Евгений Евгеньевич Агарков; Анатолий Дмитриевич Ключников; Светлана Николаевна Агаркова; Евгений Григорьевич Мирошников; Владислав Владимирович Горшков; Нина Александровна Шишкина
Original assignee: Краснодарский политехнический институт
Priority date: 1978-01-20
Filing date: 1978-01-20
Publication date: 1982-02-28

Description

Изобретение относится к устройствам , для сжигания твердого топлива и может быть использовано в топках парогенераторов.The invention relates to devices for burning solid fuel and can be used in the furnaces of steam generators.

Известны циклонные пылеуголъные топки, содержащие цилиндрический корпус с соплами для подачи топливо-воздушной смеси и размещенное в крышке корпуса окно для отвода дымовых газе®. [11 Недостатком данных устройств является пониженная сепарационная способ- J ность топки.Known cyclone dust-coal furnaces containing a cylindrical body with nozzles for supplying a fuel-air mixture and a window for removing flue gas® located in the housing cover. [11 The disadvantage of these devices is the reduced separation ability - J furnace capacity.

^Наиболее близкой по техническому «решению к предлагаемой является пылеугольная топка, содержащая цилиндричес- ¹кий корпус с соплами для подачи топливовоздушной смеси и размещенный в крышке корпуса центральный патрубок для отвода дымовых газов И ·^ The closest on technical "solution is proposed to the pulverized coal burner comprising a cylindrical body ¹ cue with nozzles for supplying air-fuel mixture and disposed in the housing cover central pipe for flue gases and ·

Однако в данной топке также не обеспечивается высокая степень сепарации пыли, так как мелкодисперсные частицы скапливаются у крышки корпуса, а затем засасываются в патрубок для отвода дымовых газов.However, this furnace also does not provide a high degree of dust separation, since finely dispersed particles accumulate at the lid of the casing, and then are sucked into the flue gas outlet pipe.

Нель изобретения — снижение содержания пыли в дымовых газах.Nel invention - reducing dust in flue gases.

Поставленная цель достигается тем, что топка снабжена дымоотводящим коробом, примыкающим к крышке корпуса, в которой дополнительно выполнены отверстия.This goal is achieved by the fact that the furnace is equipped with a fume duct adjacent to the housing cover, in which holes are additionally made.

На фиг. 1 изображена топка, продольный разрез; на фиг. 2 - разрез А-А на фиг. 1; на фиг. 3 - котельный агрегат с топкой, общий вид.In FIG. 1 shows a firebox, a longitudinal section; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - boiler unit with a furnace, general view.

Циклонная пулеуголъная топка содержит цилиндрический корпус 1 с соплами 2 для подачи топливо-воздушной смеси и размешенный в крышке 3 корпуса 1 центральный патрубок 4 для отвода дымовых газов. В крышке 3 выполнены отверстия 5 и к ней примыкает дымоотводящий короб 6. Отверстия 5 выполнены в форме круга и расположены по окружности. В нижней части корпуса 1 расположено отверстие 7 для удаления из топки уловленных твердых эоловых частиц в эоловой бункер 8. Патрубок 4 подсоединен к радиационной камере 9 охлаждения котла 10, а дымоотводящий короб 6 - к пылеулавливающим устройствам 11 и далее газоходами 12 и 13, соответственно, к дымовой трубе 14 и к нижней части камеры охлаждения 9.The cyclone bullet-shaped firebox contains a cylindrical body 1 with nozzles 2 for supplying a fuel-air mixture and a central nozzle 4 for flue gas discharge, placed in the cover 3 of the housing 1. Openings 5 are made in the cover 3 and a smoke exhaust duct 6 is adjacent to it. The openings 5 are made in the shape of a circle and are arranged in a circle. In the lower part of the housing 1 there is an opening 7 for removing trapped solid aeolian particles from the furnace into the aeolian hopper 8. A pipe 4 is connected to a radiation chamber 9 for cooling the boiler 10, and a chimney 6 is connected to dust collecting devices 11 and flue 12 and 13, respectively, to the chimney 14 and to the bottom of the cooling chamber 9.

Топка работает следующим образом.The furnace works as follows.

Топливо-воздушная смесь тангенциально вводится .в корпус 1 через сопла 2, •’топливо сгорает, а большая часть образовавшихся при этом дымовых газов через патрубок 4 отводится из топки в камеру 9 охлаждения котла 10, где отдает свое тепло и выбрасывается через дымовую трубу 14 в атмосферу.The fuel-air mixture is tangentially introduced. Into the housing 1 through the nozzles 2, • 'the fuel burns out, and most of the flue gases generated by this through the pipe 4 are removed from the furnace into the cooling chamber 9 of the boiler 10, where it gives off its heat and is released through the chimney 14 in atmosphere.

Отсепарированные на стенках цилиндрического корпуса 1 крупные частицы золы удаляются через отверстие 7 в эоловой бункер 8, а часть дымовых газов (1-5% от общего расхода) с высокой концентрацией твердых мелких частиц золы проходит через отверстия 5 в дымоотводящий короб 6 и далее очищается от пыли в пылеулавливающих устройствах 11. Очищенные дымовые газы направляются по газоходам 12 и 13 в дымовую трубу 14 или в камеру 9 охлаждения.Separated on the walls of the cylindrical body 1, large ash particles are removed through hole 7 into the aeolian hopper 8, and part of the flue gases (1-5% of the total flow rate) with a high concentration of solid fine ash particles passes through holes 5 into the smoke exhaust duct 6 and is further cleaned of dust in dust collecting devices 11. Purified flue gases are directed through the flues 12 and 13 into the chimney 14 or into the cooling chamber 9.

Отвод из топки через отверстия 5 небольшого количества высокозапыленных газов позволяет резко снизить содержание пыли в газах, поступающих в котел, что значительно повышает эксплуатационную надежность котла. Кроме того, резко уменьшаются капитальные и эксплуатационные расходы на пылеочистку, так как очистке подвергается небольшая· доля дымовых газов.The removal of a small amount of highly dusty gases from the furnace through openings 5 makes it possible to sharply reduce the dust content in the gases entering the boiler, which significantly increases the operational reliability of the boiler. In addition, the capital and operating costs of dust cleaning are sharply reduced, since a small fraction of flue gases is subjected to cleaning.

Claims

Invention otnh: itc to devices for oyuggani solid fuel and can be used in the furnaces of steam generators. Cyclone pulverized furnaces are known, which contain a cylindrical body with nozzles for supplying the air-fuel mixture and a window for flue gas removal in the cover of the body. The disadvantage of these devices is the reduced separation capacity of the furnace. The technically closer to the present invention is a pulverized-hearth furnace, containing a cylindrical body with nozzles for supplying air to the fuel mixture and a central nozzle placed in the bottom of the body 2j. However, a high degree of separation of dust is also not ensured in this furnace, since the fine particles accumulate at the crust of the casing and are then sucked into the pipe to remove the flue gases. The purpose of the invention is to reduce the dust content in the flue gases. The goal is achieved by the fact that the firebox is equipped with a smoke box with a small box to the chink of the body, which is additionally drilled. FIG. 1 shows a firebox, longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - boiler unit with a firebox, general view. The cyclone pulmonary furnace contains a cylindrical body 1 with nozzles 2 for supplying an air-fuel mixture and a central nozzle 4 disposed in the roof 3 of the body 1 for discharging flue gases. Holes 5 are made in the roof cover 3 and a duct box 6 is attached to it. Holes 5 are shaped in the form of a circle and are arranged along the spring. In the lower part of the housing 1 there is an opening 7 for removing captured solid aeol particles on the furnace in an aeolian bunker 8. The nozzle 4 is connected to the radiation chamber 9 of the cooling of the boiler 10, and the smoke box 9 to the dust removal devices 11 and further with the flue pipes 12 and 13 respectively, to the chimney 14 and the lower part of the cooling chamber 9. The furnace works as follows. The air / fuel mixture is tangential but is injected into the housing 1 through nozzles 2, the FUEL is burned, and most of the flue gases generated during this through the nozzle 4 is removed from the firebox to the cooling chamber 9 of the boiler 10, where it gives off its heat and is discharged through the flue 14 the atmosphere. Large particles of ash separated on the walls of the cylindrical housing 1 are removed through the opening 7 into the ash bin 8, and part of the flue gases (1-5% of the total flow) from the high center of the solid fine particles of ash passes through the openings 5 to the flue duct 6 and further cleaned of dust in the dust-collecting devices 11. Clear the flue gases through the ducts 12 and 13 into the chimney 14 or into the cooling chamber. The removal from the furnace through the openings 5 of a small amount of highly dusty gases makes it possible to drastically reduce the dust content in the gases entering the boiler, which significantly increases the operational reliability of the boiler. In addition, the capital and operating costs of dust cleaning are drastically increased, since a small fraction of the flue gases is subjected to cleaning. Claims of the invention A cyclone pulverized furnace containing a cylindrical body with nozzles for supplying a fuel-air mixture and a central branch pipe for flue gas discharging located in the roof of the body, which is equipped with a smoke outlet to reduce the dust content in the flue gases adjacent to the roof of the case, in which the holes are additionally filled. Sources of information taken into account in the examination 1, USSR Author's Certificate No. 89470, cl. F 23 M 1/02, 1950.

2. USSR author's certificate NO 273359, cl. F 23 M 1/12, 1968.