WO2015094011A1 - Бесшахтный воздухонагреватель - Google Patents
Бесшахтный воздухонагреватель Download PDFInfo
- Publication number
- WO2015094011A1 WO2015094011A1 PCT/RU2014/000488 RU2014000488W WO2015094011A1 WO 2015094011 A1 WO2015094011 A1 WO 2015094011A1 RU 2014000488 W RU2014000488 W RU 2014000488W WO 2015094011 A1 WO2015094011 A1 WO 2015094011A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dome
- cylindrical
- combustion
- gas
- air
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/02—Brick hot-blast stoves
Definitions
- the invention relates to the field of metallurgy, in particular, to the designs of blast furnace air heaters.
- Combustion pulsations are a closed self-oscillating process in which all the elements of the air and gas supply and combustion path are involved (feed pipes, chokes, elbows, manifolds, nozzles, combustion space). An appropriate calculation of the acoustic parameters of all path elements is required. The parameters of the final element of the tract, the parameters of the spaces of the combustion chamber and the dome, are of great importance for reducing combustion pulsations.
- RF patent 2177040 or RF patent 77865, figure 2 located in the inner or outer shafts of the air heaters in communication with the dome above the nozzle.
- the disadvantage of the above air heaters is that with an increase in thermal power, combustion pulsations arise and may increase due to the presence of extended combustion chambers. Besides, The cause of combustion pulsations is increased thermal stresses per unit area of the horizontal section of the combustion space, for example, the space of the combustion chamber.
- horizontal section refers to a section in a plane perpendicular to the vertical axis of the heater.
- Known shaftless air heater VNIIMT comprising a cylindrical chamber with a nozzle, a dome above the nozzle and an annular prechamber (combustion) communicating with it, in the lower part (at the base) of which there are air and gas supply channels, and the air supply channels are parallel axis of the heater, and the gas supply channels are directed perpendicular to the axis of the heater and exit into the air supply channels.
- the disadvantage of the known shaftless VNIIMT heater is the uneven mixing of gas with air, since the air supply channels are directed perpendicular to the gas supply channels, moreover, mixing is carried out in a limited volume of the air supply channel, in which thermal stresses per unit area of the horizontal section of the air supply channel increase . All this is the cause of pulsations of combustion and incomplete combustion of gas in the chamber and dome.
- a shaftless heater including, in particular, a cylindrical chamber with a nozzle, a dome located above the nozzle, having a cylindrical part, the dome also contains a tapering part located above the cylindrical part (for example, conical [RF patent 65890] or ball [German patent DE318068]) and located above the tapering portion of the cylindrical neck in communication with a prechamber located above the dome, air and gas supply channels are located in the side walls of the prechamber.
- the disadvantage of the shaftless prototype heater is that, due to the uncertainty in the ratio of the geometric dimensions of the final element of the path (combustion chamber and dome), there are conditions for the occurrence of combustion pulsations and the completeness of gas combustion is not ensured.
- the objective of the invention is to eliminate the conditions for the occurrence of pulsations of combustion and increase the completeness of combustion of gas.
- a shaftless heater including a cylindrical chamber with a nozzle, a dome located above the nozzle, a cylindrical part, and a tapering part located above the cylindrical part and a cylindrical neck located above the tapering part, communicating with the prechamber located above the dome, are placed in the side walls of the prechamber air and gas supply channels, characterized in that the shaftless heater is made with a ratio of the diameter of the cylindrical neck to the diameter the cylindrical portion of the dome is located within the range of from 0.31 to 0.41.
- Fulfillment of the ratio of the diameter of the cylindrical neck to the diameter of the cylindrical part of the dome in the range from 0.31 to 0.41 ensures the achievement of the technical result, which consists in eliminating the conditions for the occurrence of combustion pulsations and increasing the completeness of gas combustion.
- the range of ratios of the diameter of the cylindrical neck to the diameter of the cylindrical part of the dome in the range from 0.31 to 0.41 is determined experimentally.
- the lower limit of the ratio of diameters (0.31) is due to the fact that with a further decrease in the ratio of diameters, the resistance to the flow of combustion products (gas and air mixture) in the spaces of the prechamber and the cylindrical neck increases, the pressure of the mixture of gas with air in the cylindrical neck and in the prechamber increases, and thermal stress in the interior of the chamber and the cylindrical neck, which causes the occurrence of pulsations of combustion.
- the figure shows a General view of a shaftless air heater in section.
- the shaftless heater includes a cylindrical chamber 1 with a nozzle 2, a dome 3 located above the nozzle 2, having a cylindrical part 4, and also a tapering part 5 located above the cylindrical part 4 and a cylindrical neck 6 located above the tapering part 5, communicating with the prechamber 7 located above the dome.
- channels 9, 10 and 1 1, 12 supply, respectively, of air and gas to the pre-chamber 7.
- the shaftless heater is made with a ratio of the diameter Di of the cylindrical neck 6 to the diameter D 2 of the cylindrical part 4 of the dome 3, ranging from 0.3 1 to 0 , 41.
- the shaftless air heater contains a gas fitting 13 for supplying gas through the annular manifold 14 to the gas supply channels 9, 10 to the pre-chamber 7.
- the shaftless heater also contains an air fitting 15 for supplying air through the annular collector 16 to the air supply channels 1 1, 12 in pre-chamber 7. In dome 3, a fitting is made
- All the walls of the heater have a lining that provides thermal insulation of the inner space of the heater from the outer space surrounding the heater (inclined hatching in the figure).
- the tapering part 5 of the dome 3 may be conical or may have the shape of a part of a ball (not shown in the drawing).
- the number and location of the channels (9, 10, 1 1, 12) for supplying gas and air to the pre-chamber 7 is determined mainly by the power of the heater.
- a shaftless heater it has a diameter of prechamber 7 (Do) equal to 5012 mm, diameter (D of cylindrical neck 6, equal to 3862 mm, and diameter (D 2 ) of cylindrical part 4 of dome 3, equal to 10164 cm.
- the ratio of the diameter of the cylindrical neck 6 to the diameter of the cylindrical part 4 of the dome 3 is 0.38. 5
- the cylindrical chamber 1 of the air heater, the dome 3 (together with its parts 4 and 5), as well as the prechamber 7 are located on the same axis 18, with the possibility of deviation from the axis 18 at a distance no more than 25-35 mm.
- the execution of shaftless in there is no occurrence of a heater pulsations of combustion and the most complete burning of gas occurs the content of carbon monoxide (CO) in the combustion products is 30 mg / m 3 , with an acceptable value of 100 mg / m 3 according to European standards.
- the operation of the heater is as follows.
- combustion air through the nozzle 15 is supplied to the annular collector 16, then through the supply channels 1 1, 12 it enters the pre-chamber 8.
- Gas is supplied through the nozzle 13 to the annular collector 14 and then enters through the supply channels 9, 10 to the pre-chamber 7.
- gas ignites in the upper part of the pre-chamber 7 from the interaction of the specified mixture with the heated inner walls 8 of the pre-chamber 7.
- the temperature of the inner walls of the pre-chamber 7 necessary for igniting the mixture of gas and air is heated the internal walls of the pre-chamber 7 during the blasting period when the air heated in the nozzle 2 is discharged from the air heater through the nozzle 17.
- hot combustion products pass through it and are discharged from the air heater through the nozzle into the chimney (not shown).
- the combustion of the gas-air mixture occurs both in the prechamber 7 and in the cylindrical neck 6, as well as in the dome 3.
- the gases that are not burnt in the prechamber 7 are burned out.
- the degree of burning of gases in the cylindrical neck 6 and in dome 3 depends on the ratio of the diameter of the cylindrical neck 6 to the diameter of the dome 3.
- the pressure of the gas mixture optimally and the most complete combustion of gas occurs. In this case, there is such a thermal stress in the spaces of the prechamber 7 and the cylindrical neck 6, which ensures the elimination of the prerequisites for the occurrence of combustion pulsations.
- the use of the proposed shaftless air heater eliminates the conditions for the occurrence of combustion pulsations and increases the completeness of gas combustion.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Gas Burners (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112016014342A BR112016014342A2 (pt) | 2013-12-18 | 2014-07-03 | Aquecedor de ar sem eixo |
EA201600432A EA201600432A1 (ru) | 2013-12-18 | 2014-07-03 | Бесшахтный воздухонагреватель |
EP14872998.1A EP3106527A4 (en) | 2013-12-18 | 2014-07-03 | Shaftless air heater |
UAA201607409A UA116703C2 (uk) | 2013-12-18 | 2014-07-03 | Безшахтний повітронагрівач |
JP2016560612A JP2017501309A (ja) | 2013-12-18 | 2014-07-03 | シャフトレス熱風炉 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2013156426/02A RU2554239C1 (ru) | 2013-12-18 | 2013-12-18 | Бесшахтный воздухонагреватель |
RU2013156426 | 2013-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015094011A1 true WO2015094011A1 (ru) | 2015-06-25 |
Family
ID=53403197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2014/000488 WO2015094011A1 (ru) | 2013-12-18 | 2014-07-03 | Бесшахтный воздухонагреватель |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3106527A4 (ru) |
JP (1) | JP2017501309A (ru) |
BR (1) | BR112016014342A2 (ru) |
EA (1) | EA201600432A1 (ru) |
RU (1) | RU2554239C1 (ru) |
UA (1) | UA116703C2 (ru) |
WO (1) | WO2015094011A1 (ru) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3173696A1 (en) | 2015-11-30 | 2017-05-31 | Paul Wurth S.A. | Top combustion stove |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109402314B (zh) * | 2017-08-16 | 2024-01-16 | 中冶京诚工程技术有限公司 | 一种顶燃式热风炉燃烧器 |
RU2736818C1 (ru) * | 2020-05-01 | 2020-11-20 | Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") | Бесшахтный воздухонагреватель |
RU2753208C1 (ru) * | 2020-06-16 | 2021-08-12 | Акционерное общество "КАЛУГИН" | Бесшахтный воздухонагреватель |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE318068C (de) | 1918-07-23 | 1920-01-10 | Halbergerhütte Gmbh | Von oben beheizter winderhitzer ohne brennschacht |
US3473793A (en) * | 1966-05-13 | 1969-10-21 | Martin & Pagenstecher Ag | Hot blast stove |
SU602555A1 (ru) * | 1976-05-04 | 1978-04-15 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Доменный воздухонагреватель |
SU926017A1 (ru) | 1979-07-30 | 1982-05-07 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Воздухонагреватель дл доменных печей |
RU2145637C1 (ru) * | 1999-03-29 | 2000-02-20 | Калугин Яков Прокопьевич | Воздухонагреватель |
RU2177040C1 (ru) | 2000-07-24 | 2001-12-20 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Доменный воздухонагреватель |
RU65890U1 (ru) | 2007-04-28 | 2007-08-27 | Виктор Васильевич Яковлев | Воздухонагреватель |
RU77865U1 (ru) | 2008-07-25 | 2008-11-10 | Юрий Михайлович Крякунов | Воздухонагреватель |
EA015316B1 (ru) * | 2007-07-09 | 2011-06-30 | Яков Прокопьевич КАЛУГИН | Воздухонагреватель |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2215792C1 (ru) * | 2002-02-18 | 2003-11-10 | Калугин Яков Прокопьевич | Воздухонагреватель |
RU2316600C2 (ru) * | 2006-03-01 | 2008-02-10 | Яков Прокопьевич Калугин | Воздухонагреватель |
CN101392957B (zh) * | 2008-11-04 | 2011-08-17 | 首钢总公司 | 全烧高炉煤气高风温热风炉 |
CN201288198Y (zh) * | 2008-11-04 | 2009-08-12 | 首钢总公司 | 多切圆旋流顶燃式热风炉 |
CN201299198Y (zh) * | 2008-11-28 | 2009-09-02 | 上海市虹口区保定路第一小学 | 一种多层环保袋 |
JP5842341B2 (ja) * | 2011-02-21 | 2016-01-13 | 株式会社Ihi | 頂部燃焼式熱風炉 |
-
2013
- 2013-12-18 RU RU2013156426/02A patent/RU2554239C1/ru active IP Right Revival
-
2014
- 2014-07-03 EA EA201600432A patent/EA201600432A1/ru unknown
- 2014-07-03 WO PCT/RU2014/000488 patent/WO2015094011A1/ru active Application Filing
- 2014-07-03 EP EP14872998.1A patent/EP3106527A4/en not_active Withdrawn
- 2014-07-03 JP JP2016560612A patent/JP2017501309A/ja active Pending
- 2014-07-03 UA UAA201607409A patent/UA116703C2/uk unknown
- 2014-07-03 BR BR112016014342A patent/BR112016014342A2/pt not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE318068C (de) | 1918-07-23 | 1920-01-10 | Halbergerhütte Gmbh | Von oben beheizter winderhitzer ohne brennschacht |
US3473793A (en) * | 1966-05-13 | 1969-10-21 | Martin & Pagenstecher Ag | Hot blast stove |
SU602555A1 (ru) * | 1976-05-04 | 1978-04-15 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Доменный воздухонагреватель |
SU926017A1 (ru) | 1979-07-30 | 1982-05-07 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Воздухонагреватель дл доменных печей |
RU2145637C1 (ru) * | 1999-03-29 | 2000-02-20 | Калугин Яков Прокопьевич | Воздухонагреватель |
RU2177040C1 (ru) | 2000-07-24 | 2001-12-20 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Доменный воздухонагреватель |
RU65890U1 (ru) | 2007-04-28 | 2007-08-27 | Виктор Васильевич Яковлев | Воздухонагреватель |
EA015316B1 (ru) * | 2007-07-09 | 2011-06-30 | Яков Прокопьевич КАЛУГИН | Воздухонагреватель |
RU77865U1 (ru) | 2008-07-25 | 2008-11-10 | Юрий Михайлович Крякунов | Воздухонагреватель |
Non-Patent Citations (1)
Title |
---|
See also references of EP3106527A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3173696A1 (en) | 2015-11-30 | 2017-05-31 | Paul Wurth S.A. | Top combustion stove |
US11142804B2 (en) | 2015-11-30 | 2021-10-12 | Paul Wurth Deutschland Gmbh | Top combustion stove |
Also Published As
Publication number | Publication date |
---|---|
EP3106527A1 (en) | 2016-12-21 |
BR112016014342A2 (pt) | 2017-08-08 |
EA201600432A1 (ru) | 2016-10-31 |
UA116703C2 (uk) | 2018-04-25 |
EP3106527A4 (en) | 2017-09-20 |
JP2017501309A (ja) | 2017-01-12 |
RU2554239C1 (ru) | 2015-06-27 |
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