CN100393890C - Hot blast furnace with mixed burner at top part - Google Patents

Hot blast furnace with mixed burner at top part Download PDF

Info

Publication number
CN100393890C
CN100393890C CNB2005100905495A CN200510090549A CN100393890C CN 100393890 C CN100393890 C CN 100393890C CN B2005100905495 A CNB2005100905495 A CN B2005100905495A CN 200510090549 A CN200510090549 A CN 200510090549A CN 100393890 C CN100393890 C CN 100393890C
Authority
CN
China
Prior art keywords
air
chamber
gas
stove
burner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005100905495A
Other languages
Chinese (zh)
Other versions
CN1916188A (en
Inventor
黄东生
姚朝胜
王荣恩
吴洪勋
衣忠德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Province Metallurgical Engineering Co Ltd
Original Assignee
SHANGDONG DESIGN INST OF METALLURGY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGDONG DESIGN INST OF METALLURGY filed Critical SHANGDONG DESIGN INST OF METALLURGY
Priority to CNB2005100905495A priority Critical patent/CN100393890C/en
Publication of CN1916188A publication Critical patent/CN1916188A/en
Application granted granted Critical
Publication of CN100393890C publication Critical patent/CN100393890C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Air Supply (AREA)

Abstract

This invention relates to a top combustion hot air stove. In this invention, a mix combustor is set on the top of the hot air stove, and is coaxial with the hot air stove vertically. The mix combustor is sealed, and divided into a coal gas chamber and an air chamber. Coal gas and air can be distributed via the coal-gas-distributing pipes and the air-distributing pipes in the two chambers, respectively. Coal gas and air can be mixed for combustion in the combustion chamber via the distributing tunnels on the inner lining of the combustion chamber. The mix combustor is solely supported by bracket on the top of the combustion chamber. The coal-gas-distributing pipes and the air-distributing pipes are coaxially arranged, and the coal-gas-distributing pipes penetrate the air chamber and the air-distributing pipes.

Description

Hot-blast stove with mixing burner on top
Technical Field
The invention relates to a top combustion type hot blast stove in the field of blast furnace hot blast stoves of metallurgical systems, in particular to a hot blast stove with a mixed burner at the top.
Background
The top combustion hot blast stove of present industrial application has different structures, its shortcoming is that the collector is located inside the precombustion chamber, it is not the penetration, the inside lining of precombustion chamber is thicker, air, the gas pore channel configuration is restricted, the structure is relatively complicated, the brick type is more, temperature stress is great to collector dividing wall and inboard vertical wall influence, arouse investment increase, a series of problems such as construction difficulty, how to improve present various top combustion hot blast stoves and break through to some extent, strengthen the mixture of air and coal gas, simplify the structure, reduce the construction difficulty, save the investment, become the problem that metallurgical worker cared about.
Disclosure of Invention
The invention aims to solve the technical problem of providing a top-combustion hot blast stove which has the advantages of simple structure, small construction difficulty, full mixing and combustion of air and coal gas, higher air temperature, reduced investment and shortened construction period. And each air flow and each gas flow entering the combustion chamber are fully mixed and combusted through the top mixing burner.
Therefore, the technical scheme adopted by the invention is as follows: a hot blast stove with a mixed burner at the top comprises a cold air inlet, a grate, a support column, a checker brick, a regenerative chamber, a furnace lining, a furnace shell, a vault combustion chamber, a mixed burner, a hot air outlet and a flue gas outlet. The mixed burner is arranged above the outer part of the arch crown combustion chamber and is coaxial with the hot blast stove in the vertical direction, the mixed burner consists of a shell, a lining, a base, an air inlet, a coal gas inlet, an air chamber, a coal gas pipe, an air pipe, a partition plate and a base heat insulation layer, the space between the shell and the base is divided into the coal gas chamber and the air chamber by the partition plate, the coal gas chamber and the air chamber are respectively provided with the coal gas inlet and the air inlet, a plurality of coal gas pipes and air pipes are distributed in the coal gas chamber and the air chamber, and the coal gas pipes and the. Wherein,
the mixing burner is independently supported above the dome combustion chamber by a support means.
The gas chamber is arranged at the upper part or the lower part of the air chamber, and the gas chamber and the air chamber are positioned in the same closed space.
The gas pipe and the air pipe are respectively distributed with a gas swirl plate and an air swirl plate.
The gas pipe passes through the air chamber and the air pipe of the air chamber or the air pipe passes through the gas chamber and the gas pipe of the gas chamber.
During the air supply period, a small amount of nitrogen gas with the pressure slightly higher than the pressure in the furnace is introduced into the air chamber and the gas chamber.
A water cooling device is arranged in the base of the mixing burner.
In summary, the basic structure of the present invention is that a mixing burner is arranged on the outside of the combustion chamber of the hot blast stove and is coaxial with the combustion chamber in the vertical direction, the mixing burner is a closed space which is divided into a gas chamber and an air chamber, the gas and the air are distributed and mixed through a gas pipe and an air pipe which are respectively arranged in the gas chamber and the air chamber, and the mixture enters the vault combustion chamber for combustion after passing through a base and an insulating layer below the base. The mixing burner is independently supported on the combustion chamber through a supporting device, the coal gas distribution pipes and the air distribution pipes are arranged concentrically, and the coal gas distribution pipes penetrate through the air chambers and the air pipes of the air chambers.
Due to the adoption of the structure, the invention has the following beneficial effects:
1. the mixing burner is positioned outside the combustion chamber of the hot blast stove and is independently supported on the arch crown combustion chamber through the supporting device, so that the construction and the installation are convenient, the integral hoisting can be realized, and the construction period is shortened.
2. The mixed burner has simple structure and simplifies the design of the top combustion hot blast stove.
3. Save refractory materials and reduce the weight of the furnace body.
4. The temperature difference between the theoretical combustion temperature of coal gas and the vault temperature of the combustion chamber is small, the heat efficiency is high, and the hot air temperature is high.
5. The investment is saved.
6. The air and the coal gas are fully mixed.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a basic block diagram of a top-fired stove with a hybrid burner at the top.
Fig. 2 is a cross-sectional view a-A, B-B of fig. 1.
In the figure:
1. cold air inlet 2, grate and pillar 3, smoke outlet
4. Checker brick 5, regenerator 6, furnace lining
7. Furnace shell 8, vault combustion chamber 9, mixed combustor strutting arrangement
10. Base 11, air inlet 12, gas inlet
13. Gas chamber 14. mixed burner lining 15. gas pipe
16 insulating layer 17 of partition board, 18 partition board and support, air chamber
19. Base upper insulating layer 20, air pipe 21, air swirl plate
22. Coal gas swirl sheet 23-24, base lower insulating layer 25, fiber felt
26. Hot air outlet 27. mixed burner
Detailed Description
As shown in the structural diagram of the embodiment of the invention shown in fig. 1, the top-fired hot blast stove with the mixing burner at the top comprises a cold air inlet 1, a regenerator grate and a support column 2, a flue gas outlet 3, a combustion chamber checker brick 4, a regenerator 5, a furnace lining 6, a furnace shell 7, a dome combustion chamber 8, a mixing burner support device 9, a mixing burner 27, a fiber felt 25 and a hot air outlet 26. The mixed burner 27 is composed of a base 10 (a water cooling device is arranged in the base of the mixed burner), an air inlet 11, a coal gas inlet 12, a coal gas chamber 13, a mixed burner lining 14, a coal gas pipe 15, a partition plate heat insulation layer 16, a partition plate 17, an air chamber 18, a base upper heat insulation layer 19, an air pipe 20, an air swirl plate 21, a coal gas swirl plate 22 and base lower heat insulation layers 23 and 24.
The mixing burner 27 is positioned above the exterior of the dome combustion chamber 8 and is coaxial with the dome combustion chamber 8 in the vertical direction, and the mixing burner 27 has a mixing burner liner 14 inside and is independently supported above the dome combustion chamber 8 by a mixing burner supporting device 9.
Referring to fig. 2, which shows a cross-sectional view a-A, B-B of fig. 1, respectively, the hybrid combustor 27 is a closed space, the interior of which is divided into a gas chamber 13 and an air chamber 18 by a partition 17, the gas chamber 13 being located above or below the air chamber 18 and being located in the same closed space. A plurality of gas pipes 15 and air pipes 20 are respectively distributed in the gas chamber 13 and the air chamber 18 and are concentrically arranged, and the gas pipes 15 penetrate through the air chamber 18 and the air pipe 20 of the air chamber or the air pipe 20 penetrates through the gas chamber 13 and the gas pipes 15 of the gas chamber 13.
The gas pipe 15 and the air pipe 20 are internally provided with a rotational flow sheet, so that air and gas generate rotational flow, and the cross jet flow at the outlet is rotationally mixed and rapidly combusted.
Coal gas enters the vault combustion chamber 8 through the coal gas inlet 12, the coal gas chamber 13 and the coal gas pipe 15, air enters the vault combustion chamber 8 through the air inlet 11, the air chamber 18 and the air pipe 20, the coal gas and the air are forcibly divided into a plurality of strands of thin flows by the plurality of coal gas pipes 15 and the plurality of air pipes 20, the thin flows respectively swirl before entering the vault combustion chamber 8, cross jet flows rotate and mix when entering the vault combustion chamber 8, the mixing is complete, and the combustion temperature is high. The multiple strands of thin flows are spread in a rotating mode along the inner wall of the vault combustion chamber 8 and enter the checker bricks on the whole section of the regenerator, and air flow is distributed uniformly.
The coal gas is completely combusted after entering the arch crown combustion chamber 8 and enters the checker bricks on the whole section of the regenerator 5 at the highest temperature, so that the distance is short, the heat loss is less and the efficiency is high.
During the air supply period, a small amount of nitrogen gas with the pressure slightly higher than the pressure in the furnace is introduced into the air chamber and the gas chamber.
The invention may be embodied in many alternate forms and the specific embodiments illustrated in the drawings are presently preferred and are not intended to limit the scope of the invention.

Claims (7)

1. The hot blast stove with the top provided with the mixed burner comprises a cold air inlet, a grate, a support column, a checker brick, a regenerator, a furnace lining, a furnace shell, an arch top combustion chamber, the mixed burner, a hot air outlet and a flue gas outlet.
2. The stove of claim 1, wherein the burner is independently supported above the dome combustion chamber by support means.
3. The stove of claim 1, wherein the gas chamber is above or below the air chamber and the gas chamber and the air chamber are located in the same enclosed space.
4. The hot blast stove with the mixing burner at the top as claimed in claim 3, wherein the gas swirl plate and the air swirl plate are distributed in the gas pipe and the air pipe respectively.
5. The stove according to claim 3, wherein the gas pipe passes through the air chamber and the air pipe of the air chamber or the air pipe passes through the gas chamber and the gas pipe of the gas chamber.
6. The stove according to claim 1 or 2, wherein during the blast, a small amount of nitrogen gas is introduced into the air chamber and the gas chamber at a pressure slightly higher than the pressure in the stove.
7. The stove according to claim 1 or 2, wherein the base of the burner is internally provided with water cooling means.
CNB2005100905495A 2005-08-17 2005-08-17 Hot blast furnace with mixed burner at top part Expired - Fee Related CN100393890C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100905495A CN100393890C (en) 2005-08-17 2005-08-17 Hot blast furnace with mixed burner at top part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100905495A CN100393890C (en) 2005-08-17 2005-08-17 Hot blast furnace with mixed burner at top part

Publications (2)

Publication Number Publication Date
CN1916188A CN1916188A (en) 2007-02-21
CN100393890C true CN100393890C (en) 2008-06-11

Family

ID=37737251

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100905495A Expired - Fee Related CN100393890C (en) 2005-08-17 2005-08-17 Hot blast furnace with mixed burner at top part

Country Status (1)

Country Link
CN (1) CN100393890C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4955117B1 (en) * 2011-03-15 2012-06-20 新日鉄エンジニアリング株式会社 Top-fired hot air furnace
CN103055515A (en) * 2012-07-16 2013-04-24 殷国东 Electronic fuel gas environmental-friendly firecracker machine
CN103196641A (en) * 2013-03-29 2013-07-10 中国十七冶集团有限公司 Hot-blast stove leakproofness pressure test method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022572A (en) * 1975-02-06 1977-05-10 Didier-Werke Ag Hot-blast furnace with foamed silicate inner layer
WO2000058526A1 (en) * 1999-03-29 2000-10-05 Yakov Prokopievich Kalugin Column-less air heater
CN1439726A (en) * 2002-02-18 2003-09-03 亚·波·卡卢金 Hot air stove
CN2835249Y (en) * 2005-08-17 2006-11-08 山东省冶金设计院 Hot blast furnace with mixed burner on the top

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022572A (en) * 1975-02-06 1977-05-10 Didier-Werke Ag Hot-blast furnace with foamed silicate inner layer
WO2000058526A1 (en) * 1999-03-29 2000-10-05 Yakov Prokopievich Kalugin Column-less air heater
CN1439726A (en) * 2002-02-18 2003-09-03 亚·波·卡卢金 Hot air stove
CN2835249Y (en) * 2005-08-17 2006-11-08 山东省冶金设计院 Hot blast furnace with mixed burner on the top

Also Published As

Publication number Publication date
CN1916188A (en) 2007-02-21

Similar Documents

Publication Publication Date Title
EP2177633B1 (en) Air heater
JP3223816U (en) New top-fired hot air furnace
CN104595897B (en) Single-layer porous foam ceramic plate partial pre-mixing fuel gas combustor
CN201251183Y (en) Ceramic burner
CN105757666B (en) The full direct injection distributor of three ring group mould assemblys applied to burner for household gas range
CN100393890C (en) Hot blast furnace with mixed burner at top part
CN205480955U (en) Multiinjector is unpowered, and burning furnace is fired to back mixing formula
RU2215792C1 (en) Air heater
CN2835249Y (en) Hot blast furnace with mixed burner on the top
RU2316600C2 (en) Air heater
CN201245671Y (en) Novel catenary dome ceramic combusting device hot-air furnace
CN1680608B (en) External distributor style top-burning hot-air furnace
CN202546737U (en) Overhead type heat storage combustion system
CN102051425A (en) High-wind-temperature hot blast heater with automatic air preheater
EP4023774A1 (en) Shaftless air heater
CN212456849U (en) Ceramic burner and top combustion hot blast stove
CN201962308U (en) High blast temperature hot blast heater with self-preheating device for air
CN201819218U (en) Horizontal internal mixing type ceramics burner used for top combustion stove
CN201954568U (en) Zoned combustion type combustion furnace
CN201106926Y (en) Preheating device of hot blast stove
CN202849471U (en) Hot blast stove with gas and air combusting in annularly jetting and mixing heat storer in combustion chamber
CN202519285U (en) Hot-blast stove with sleeve burner and with conical regenerator for rectifying and supporting combustion in combustion chamber
CN111964056B (en) Ceramic burner and top combustion type hot blast stove
CN217654102U (en) Vertical hot blast furnace system with low nitrogen oxide emission
US3947245A (en) Hot blast stove

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHANDONG PROVINCE METALLURGICAL ENGINEERING CO., L

Free format text: FORMER NAME: SHANGDONG DESIGN INST OF METALLURGY

CP03 Change of name, title or address

Address after: 250101 Shandong province Ji'nan High-tech Development Zone, Road No. 1969

Patentee after: SHANDONG PROVINCE METALLURGICAL ENGINEERING Co.,Ltd.

Address before: 250014 No. 134 Lishan Road, Shandong, Ji'nan

Patentee before: Shandong Metallurgical Design Institute

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080611

CF01 Termination of patent right due to non-payment of annual fee