CN2713376Y - A hot blast furnace - Google Patents

A hot blast furnace Download PDF

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Publication number
CN2713376Y
CN2713376Y CN 200420072263 CN200420072263U CN2713376Y CN 2713376 Y CN2713376 Y CN 2713376Y CN 200420072263 CN200420072263 CN 200420072263 CN 200420072263 U CN200420072263 U CN 200420072263U CN 2713376 Y CN2713376 Y CN 2713376Y
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CN
China
Prior art keywords
heat exchanger
air
hot
pipe
circulating fan
Prior art date
Application number
CN 200420072263
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Chinese (zh)
Inventor
梁汉华
Original Assignee
梁汉华
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Publication date
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Priority to CN 200420072263 priority Critical patent/CN2713376Y/en
Application granted granted Critical
Publication of CN2713376Y publication Critical patent/CN2713376Y/en

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Abstract

The utility model relates to a hot blast furnace, which comprises a stove body and a smoke gas discharging tube of the hot blast stove body. The utility model is characterized in that the smoke gas discharging tube is a bent tube, and a heat exchanger for preheating and supplying the air is added at the exit of the smoke gas discharging bent tube. The beneficial effect of the utility model are that the smoke gas flow path is altered, the heat exchanger is added, the heat efficiency is enhanced by using the discharged residual heat of the smoke gas for preheating and supplying the air; the environmental protection processing to the flue gas is carried out by an ash separator, and the pollution to the environment is reduced.

Description

A kind of hot-blast stove
Affiliated technical field
The utility model relates to a kind of timber dryer, relates in particular to a kind of hot-blast stove.
Background technology
Existing hot-blast stove generally adopts the inner/outer tube structure, and inner core inside is the combustion chamber, and inner core and urceolus are formed hot-flow flue, flue gas and air heat exchange are undertaken by inwall, be that the hot-blast stove inwall is an effective heat exchange area, flue gas flow is single flow (directly emptying vertically upward).The hot-blast stove of this structure is simple in structure, and flue gas flow is short, but heat exchange area is limited, and the thermal efficiency is low, exhaust gas temperature height (reaching 500 ℃), and environmental pollution is bigger.
Summary of the invention
In order to overcome existing hot-blast stove deficiency, purpose provides a kind of hot-blast stove, and this hot-blast stove thermal efficiency height pollutes few.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of hot-blast stove comprises hot-blast furnace body and smoke exhaust pipe, and its design feature is: described smoke exhaust pipe is a bend pipe, increases the heat exchanger of preheating auxiliary air at smoke evacuation winding pipe exit place.As the technical program being replenished and optimizing, the inwall of smoke evacuation bend pipe covers fire clay on the way, and heat exchanger then can be pipe heat exchanger and barrel type heat exchanger.
Described pipe heat exchanger is the heat exchanger that is provided with circulating fan, this heat exchanger is provided with two groups of heat exchanger tubes, the air inlet of one group of heat exchanger tube communicates with fresh air and air outlet is connected with the blast pipe of circulating fan, the air inlet of another group heat exchanger tube is connected with the circulating fan air outlet, and the air outlet of this pipe is connected with the body of heater air inlet, the blast pipe of circulating fan also is connected with the residual air fairlead of hothouse, and the auxiliary air that circulating fan is introduced is the mist of fresh air and residual air; Heat exchanger tube separates flue gas and auxiliary air, logical auxiliary air in the pipe, and the pipe outer wall contacts with flue gas.Pipe heat exchanger also is provided with inspection door on bobbin carriage.
Described barrel type heat exchanger is the heat exchanger that is provided with circulating fan, barrel type heat exchanger is the inner/outer tube structure, and the inner logical flue gas of inner core forms hot-air channel between inner core and the urceolus, the air inlet of hot-air channel is connected with the air outlet of circulating fan, and the air outlet of hot-air channel is connected with the body of heater air inlet.Described barrel type heat exchanger also is provided with the economizer bank of lateral direction penetrating its underpart, the air inlet of economizer bank communicates with fresh air and exports with the blast pipe of circulating fan and is connected, the blast pipe of circulating fan also is connected with the residual air fairlead of hothouse, and the auxiliary air that circulating fan is introduced is the mist of fresh air and residual air.As the further optimization to the technical program, hot-air channel is surface soldered wind loop and fin outer tube, increases heat exchange area.
For further technique scheme being optimized, also be provided with deduster in the smoke outlet of heat exchanger.This deduster is the water tank type deduster, and the air inlet of water tank type deduster communicates with the exhanst gas outlet of heat exchanger, and the outlet of water tank type deduster links to each other with air-introduced machine.
The beneficial effects of the utility model are that the change flue gas flow prolongs heat-exchange time, increases heat exchanger, utilizes the fume afterheat preheating auxiliary air of discharging, and has improved the thermal efficiency, but also be provided with deduster flue gas is handled, and reduces the pollution to environment.
Description of drawings
Fig. 1 is the cutaway view of the utility model embodiment 1.
Fig. 2 is the vertical view of the utility model embodiment 1.
Fig. 3 is the cutaway view of the utility model embodiment 2.
Fig. 4 is the vertical view of the utility model embodiment 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Consult Fig. 1 and Fig. 2, that shown is embodiment 1, and a kind of hot-blast stove comprises hot-blast furnace body 1 and smoke exhaust pipe 2, its design feature is: described smoke exhaust pipe 2 is bend pipe, increases the preheating auxiliary air in smoke evacuation bend pipe 2 exits and is provided with the pipe heat exchanger 3 of circulating fan 4.Smoke exhaust pipe 2 changes bend pipe into by straight tube, and flue gas rotary is flowed, and the heat-exchange time of prolong smoke burns out for the bend pipe 2 that prevents to discharge fume is washed away by high-temperature flue gas simultaneously, and Bi Tu covers fire clay 21 in smoke evacuation bend pipe 2.
The heat exchanger tube of heat exchanger 3 divides two groups, is set of heat exchange tubes 31 and set of heat exchange tubes 32.The air inlet 310 of set of heat exchange tubes 31 is connected with circulating fan 4 air outlets 41, the air outlet 311 of set of heat exchange tubes 31 is connected with body of heater 1 air inlet 11, the air inlet 320 of set of heat exchange tubes 32 communicates with fresh air, and air outlet 321 is connected by pipe 3210 with the blast pipe 42 of circulating fan 4, and the blast pipe 42 of circulating fan 4 also is connected (among the figure not picture place) with the residual air fairlead of hothouse.
Pipe heat exchanger 3 separates flue gas and auxiliary air by heat exchanger tube, logical auxiliary air in the pipe, and the pipe outer wall contacts with flue gas.Increased whole hot-blast stove heat exchange area like this, heat transfer intensity increases greatly, wants high from the residual air that hothouse is drawn than the temperature of the fresh air of surrounding environment, can further improve the thermal efficiency of whole system like this, reduces exhaust gas temperature.In order to remove the outer dust stratification of heat exchange tube, inspection door 331 is set on bobbin carriage 33, regularly open inspection door 331 and carry out deashing.As optimization,, can deduster be set in exhanst gas outlet 34 places of heat exchanger 3 in order to reduce the exhaust temperature that pollutes and further reduce flue gas to present embodiment.This deduster is a water tank type deduster 5, and the air inlet 51 of water tank type deduster 5 communicates with the exhanst gas outlet 34 of heat exchanger, and the gas outlet 52 of water tank type deduster 5 links to each other with air-introduced machine 6.
Consult Fig. 3 and Fig. 4, that shown is embodiment 2, has changed heat exchanger structure with respect to 1 of embodiment, changes the hot device 3 of tubular type into barrel type heat exchanger 7, and other structure and flow process are constant.
Described barrel type heat exchanger 7 is for being provided with the heat exchanger of circulating fan 4, barrel type heat exchanger 7 is for adopting the inner/outer tube structure, inner core 71 inner logical flue gases, inner core 71 forms hot-air channel 73 with urceolus 72, the air inlet 732 of hot-air channel 73 is connected with the air outlet 41 of circulating fan, the air outlet 733 of hot-air channel 73 is connected with body of heater air inlet 11, and surface soldered wind loop 730 and fin 731 outer tube, form ventilation section and strengthen heat transfer intensity, guarantee enough heat exchange areas, effectively utilize heat energy, reduce exhaust gas temperature.Barrel type heat exchanger 7 also is provided with the economizer bank 74 of lateral direction penetrating its underpart, the air inlet of economizer bank 74 communicates with fresh air and exports by pipe 741 and is connected with the blast pipe 42 of circulating fan 4, and the blast pipe 42 of circulating fan 4 also is connected with the residual air fairlead of hothouse (among the figure not picture place).
Economizer bank 74 both can the preheating supply fresh air, again flue gas is had certain delay effect, prolong smoke promotes heat exchange to carry out in the time of staying of burner hearth and heat exchanger inner bag, improves the thermal efficiency.Barrel type heat exchanger 7 adopts the logical cigarette of cylinder, logical cigarette resistance is little, dust stratification is littler than pipe heat exchanger 3, but volume ratio is bigger, also bigger to powerful hot-blast stove steel consumption, the thermal efficiency will hang down with respect to pipe heat exchanger, but for the thermal efficiency that improves original hot-blast stove, reduce exhaust gas temperature, it is helpful to reduce dust stratification.
Above-described specific embodiment only is the utility model preferred embodiment, and the equivalent arrangements of being done according to the utility model claim all should be technology of the present utility model and contains such as.

Claims (8)

1. a hot-blast stove comprises hot-blast furnace body and smoke exhaust pipe, it is characterized in that: described smoke exhaust pipe is a bend pipe, increases the heat exchanger of preheating auxiliary air at smoke evacuation winding pipe exit place.
2. a kind of hot-blast stove according to claim 1 is characterized in that: the inwall coating refractory mud of described smoke evacuation bend pipe.
3. a kind of hot-blast stove according to claim 2, it is characterized in that: described heat exchanger is the pipe heat exchanger that is provided with circulating fan, this heat exchanger is provided with two groups of heat exchanger tubes, the air inlet of one group of heat exchanger tube communicates with fresh air and air outlet is connected with the blast pipe of circulating fan, the air inlet of another group heat exchanger tube is connected with the circulating fan air outlet, and the air outlet of this pipe is connected with the body of heater air inlet, and the blast pipe of circulating fan also is connected with the residual air fairlead of hothouse; Heat exchanger tube separates flue gas and auxiliary air, logical auxiliary air in the pipe, and the pipe outer wall contacts with flue gas.
4. a kind of hot-blast stove according to claim 3 is characterized in that: described pipe heat exchanger is provided with inspection door on bobbin carriage.
5. a kind of hot-blast stove according to claim 2, it is characterized in that: described heat exchanger is the barrel type heat exchanger that is provided with circulating fan, barrel type heat exchanger is the inner/outer tube structure, the inner logical flue gas of inner core, form hot-air channel between inner core and the urceolus, the air inlet of hot-air channel is connected with the air outlet of circulating fan, and the air outlet of hot-air channel is connected with the body of heater air inlet.Described barrel type heat exchanger also is provided with the economizer bank of lateral direction penetrating its underpart, and the air inlet of economizer bank communicates with fresh air and exports with the blast pipe of circulating fan and is connected, and the blast pipe of circulating fan also is connected with the residual air fairlead of hothouse.
6. a kind of hot-blast stove according to claim 5 is characterized in that: described hot-air channel is surface soldered wind loop and fin outer tube.
7. according to claim 3 or 6 described a kind of hot-blast stoves, it is characterized in that: the smoke outlet in heat exchanger also is provided with deduster.
8. a kind of hot-blast stove according to claim 7 is characterized in that: described deduster is the water tank type deduster, and the air inlet of water tank type deduster communicates with the exhanst gas outlet of heat exchanger, and the outlet of water tank type deduster links to each other with air-introduced machine.
CN 200420072263 2004-08-04 2004-08-04 A hot blast furnace CN2713376Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420072263 CN2713376Y (en) 2004-08-04 2004-08-04 A hot blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420072263 CN2713376Y (en) 2004-08-04 2004-08-04 A hot blast furnace

Publications (1)

Publication Number Publication Date
CN2713376Y true CN2713376Y (en) 2005-07-27

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Application Number Title Priority Date Filing Date
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322677A (en) * 2013-07-16 2013-09-25 鸡西市星光热风炉制造有限公司 Energy-saving environment-friendly coal-fueled hot air furnace
CN103383144A (en) * 2013-08-06 2013-11-06 叙永县马岭粮油食品有限公司 Hot blast stove
CN103405940A (en) * 2013-08-28 2013-11-27 天华化工机械及自动化研究设计院有限公司 Energy-saving type spray-drying method
CN104807319A (en) * 2015-05-14 2015-07-29 李菊泉 Material-water separating device
CN105202534A (en) * 2015-09-22 2015-12-30 梁万泉 Fresh air pre-heating fuel dust recovery type gasification furnace
CN105865023A (en) * 2016-04-28 2016-08-17 安徽谷丰机械科技有限公司 Environmentally friendly energy-saving type hot-blast stove
CN106225521A (en) * 2016-08-31 2016-12-14 浙江华顺炉业有限公司 A kind of heat-treatment furnace cartridge type air preheater
CN106333221A (en) * 2016-08-15 2017-01-18 黄碧义 Rotary wheel type drying system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322677A (en) * 2013-07-16 2013-09-25 鸡西市星光热风炉制造有限公司 Energy-saving environment-friendly coal-fueled hot air furnace
CN103322677B (en) * 2013-07-16 2016-04-20 鸡西市星光热风炉制造有限公司 Energy saving and environment friendly coal-fired hot-blast stove
CN103383144A (en) * 2013-08-06 2013-11-06 叙永县马岭粮油食品有限公司 Hot blast stove
CN103405940A (en) * 2013-08-28 2013-11-27 天华化工机械及自动化研究设计院有限公司 Energy-saving type spray-drying method
CN104807319A (en) * 2015-05-14 2015-07-29 李菊泉 Material-water separating device
CN105202534A (en) * 2015-09-22 2015-12-30 梁万泉 Fresh air pre-heating fuel dust recovery type gasification furnace
CN105865023A (en) * 2016-04-28 2016-08-17 安徽谷丰机械科技有限公司 Environmentally friendly energy-saving type hot-blast stove
CN105865023B (en) * 2016-04-28 2019-01-29 安徽谷丰机械科技有限公司 A kind of environment-friendly and energy-efficient hot-blast stove
CN106333221A (en) * 2016-08-15 2017-01-18 黄碧义 Rotary wheel type drying system
CN106225521A (en) * 2016-08-31 2016-12-14 浙江华顺炉业有限公司 A kind of heat-treatment furnace cartridge type air preheater

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