CN102278816A - Efficient energy-saving hot blast furnace - Google Patents
Efficient energy-saving hot blast furnace Download PDFInfo
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- CN102278816A CN102278816A CN2011101388190A CN201110138819A CN102278816A CN 102278816 A CN102278816 A CN 102278816A CN 2011101388190 A CN2011101388190 A CN 2011101388190A CN 201110138819 A CN201110138819 A CN 201110138819A CN 102278816 A CN102278816 A CN 102278816A
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Abstract
The invention relates to an efficient energy-saving hot blast furnace which comprises a furnace body, wherein the furnace body is internally provided with a furnace gate; the furnace body is connected with a hot air output pipe; one end of the hot air output pipe is connected to and arranged on the top of the furnace body; the furnace body below the hot air output pipe is internally provided with an entire combustion chamber which extends and heightens along a furnace wall; the other end of the hot air output pipe is connected with a hot air inlet of a heat exchange mechanism before heat exchange; a first hot air outlet of the heat exchange mechanism after heat exchange is connected with a heat using device through a pipeline; and an atmosphere inlet of the heat exchange mechanism before heat exchange is communicated with the first hot air outlet. According to the invention, the defects that the heat energy loss is serious and the operation cost is high for a common evaporation boiler and a heat conduction oil boiler in the prior art, also heat conduction oil intermediate bodies are easy to burn when the heat conduction oil intermediate bodies are transferred at a high temperature condition, steam is easy to explode under a high voltage condition, and severe safety hazard exists are overcome, through the design, the hot blast furnace has the advantages of compact structure, thorough combustion, high heat production efficiency and heat exchange efficiency and safety and reliability in operation.
Description
Technical field
The present invention relates to a kind of energy efficient hot air furnace.
Background technology
In the industrial and agricultural production process, need a large amount of heats to various production materials dry, be shaped, processing such as curing, its equipment only depends on steam boiler or heat conducting oil boiler.Above-mentioned two kinds of boilers produce heat by stove, mediator (water or oil) in the heat transferred pot, mediator is carried by steam pressure or is transported in drying baker or the drying assembly line by circulating pump, exchange by heat exchanger again, heat with the distinguished and admirable oven dry part of taking to, is reached material oven dry purpose.
The heat production working procedure of heat conducting oil boiler, be in stove, to provide a large amount of fuel to burn earlier, produce the conduction oil in a large amount of heat transferred exchange pipes, conduction oil heats up, and the back is carried by circulating pump and after the heat exchanger heat exchange, the heat that exchanges out is for using with hot equipment.Returning after conduction oil need heat up heats in the boiler recycles.When conduction oil is made intermediate, its temperature must exceed with hot equipment such as baking oven or more than 30% of drying room temperature, the boiler smoke exhaust temperature exceeds more than 20% than conduction oil temperature, and than exceeding about 50% with internal temperature of heat apparatus, its heat comprehensive loss is about 45%.Simultaneously, conduction oil recycles under hot conditions for a long time, must produce carbonizing matter, and heat transfer property is faded, getting over the long pass thermal efficiency period can be lower, use and to change in three to five years, and conduction oil relies on the oil pump high temperature circulation, the use for a long time of oil pump, oil pipe and valve member can cause wearing and tearing, need to change various parts, also want technical staff's long-term follow to safeguard that corresponding production cost also can improve.
Steam boiler heat production working procedure, be earlier cold water to be injected in the pot, be supplied to pot or exchange pipe by the stove heat production, again with heat transferred water, water becomes steam after heating up, produced pressure, compressed into exchange pipe inside with hot equipment such as baking oven or drying room by the pressure of steam, interchanger is passed to baking oven or drying room dry matter by distinguished and admirable operation after having received heat.High steam by the interchanger exchange heat after pressure can reduce, overbottom pressure steam must be drained, high steam could inject continuously, could keep the intensification of baking oven or drying room, just can reach the purpose that material is dried.The discharging of overbottom pressure steam, thermal loss can reach about 45%, heat transferred water in the boiler becomes steam, and the boiler smoke exhaust temperature surpasses the temperature about 25% of steam, equals a heat-shift loss 25%, secondary heat-shift overbottom pressure discharge of steam thermal loss about 45%, front and back secondary heat-shift amounts to about 70%, also has the boiler cinder, ashpit losses and other loss 5%, practical heat energy to the baking oven drying room can only reach about 25%, and the thermal efficiency is extremely low.The transmission of steam boiler heat is a water quality, contains a large amount of calcium and other impurity in the middle of the water quality, and water quality can become steam and can flow under high-temperature condition, and calcium can separate with water with other impurity.Calcium and other impurity thing can tie in pot and the exchange pipe in, be called incrustation scale, during incrustation scale knot thick more in the long more pot and in the exchange pipe, heat transfer performance can descend equally gradually.So the steam boiler operation adds the incrustation scale in the alkaline water softener cleaning pot simultaneously to the necessary prolonged application purified treatment of water in water, in time discharge hot sewage, water treatment cost and hot sewage discharge thermal loss can increase operating cost like this.The steam boiler operation must be disposed water pump, various valves, and various members, the water quality foreign material are many, and water quality itself is two hydrogen, one oxygen, there is oxidation reaction in the capital, boiler and various member all are that metallics causes, and water quality has oxidation to metallics, and adding mechanical long-time running wearing and tearing also needs skilled worker personnel maintenance maintenance, often change each member, also can increase operating cost.
Be not difficult to find that the heat-energy losses of steam boiler and heat conducting oil boiler is serious, operating cost is very high, and the conduction oil mediator transmits burning easily under hot conditions, and steam explodes under high-pressure situations easily, all exists serious potential safety hazard.
Summary of the invention
The heat-energy losses of common steam boiler and heat conducting oil boiler is serious in the prior art, operating cost is high in order to overcome, and the conduction oil mediator transmits burning easily under hot conditions, steam is blast easily under high-pressure situations, exist the problem of serious potential safety hazard, the invention provides a kind of energy efficient hot air furnace, the compact conformation of this energy efficient hot air furnace, burning thoroughly, heat production efficient and heat exchanger effectiveness height, safe and reliable to operation.
The technical solution adopted for the present invention to solve the technical problems is: comprise body of heater, fire grate is set in the body of heater, connect the hot gas efferent duct on the body of heater, hot gas efferent duct one end connects the top that is arranged on body of heater, is provided with the most combustion chamber of increasing along the furnace wall extension in the body of heater of hot gas efferent duct below.
The hot gas efferent duct other end connects the hot air intake before the heat exchange mechanism heat exchange, and first heat outlet after the heat exchange mechanism heat exchange connects the hot equipment of using by pipeline, and the atmosphere import before the heat exchange mechanism heat exchange is communicated with first heat outlet.
Heat exchange mechanism is made of first counterflow heat exchanger and second counterflow heat exchanger serial connection, the lower end of first counterflow heat exchanger and second counterflow heat exchanger is provided with the deashing chamber of connection, hot gas in the hot gas efferent duct is sent into the hot air intake of first counterflow heat exchanger downwards, upwards enter second counterflow heat exchanger through deashing chamber by the lower end, atmosphere in the atmosphere import is sent into second counterflow heat exchanger downwards, upwards enters first counterflow heat exchanger by the lower end and is communicated with first heat outlet.
The waste heat outlet of second counterflow heat exchanger is connected in series the 3rd counterflow heat exchanger from the top, and the bottom of the 3rd counterflow heat exchanger is the cold wind import, and second heat outlet on the 3rd counterflow heat exchanger top is communicated with body of heater inside.
The upper end of first counterflow heat exchanger, second counterflow heat exchanger and the 3rd counterflow heat exchanger is provided with movable shoot door.
The present invention is by above-mentioned specific design, can produce spray in the burning cremate process of fuel in body of heater flies, boiling fuel, fuel can fire the indoor burning of lifting repeatedly to the greatest extent under situation about not burnouting, till after-flame, hot gas is exported from top hot gas efferent duct, heavier dust accumulates on fire grate, reduce flue dust and crock and enter heat exchanger, Btu utilization can reach more than 95% after three counterflow exchange, greatly improves the thermal efficiency, and lifting speed of the present invention is very fast, only need a heat exchange can directly supply the production demand, its energy exchange medium is the exchange of gas gas, does not have inflammable risk of high temperature oil and steam pressure explosion danger, and performance is as safe as a house.
Description of drawings
Below in conjunction with drawings and Examples detailed content of the present invention is described.
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
As shown in the figure, the present invention includes body of heater 1, fire grate 2 is set in the body of heater 1, connect hot gas efferent duct 3 on the body of heater 1, hot gas efferent duct 3 one ends connect the top that is arranged on body of heater 1, are provided with the most combustion chamber 5 that 4 extensions are increased along the furnace wall in the body of heater 1 of hot gas efferent duct 3 belows.Can produce in the burning cremate process of fuel in body of heater and spray the fuel that flies, seethes with excitement, fuel is in the lifting burning repeatedly in firing chamber 5 to the greatest extent of meeting under the situation about not burnouting, till after-flame, hot gas is from 3 outputs of top hot gas efferent duct, heavier dust accumulates on fire grate 2, and reduces flue dust and crock and enters heat exchange mechanism 6.Hot gas efferent duct 3 other ends connect the hot air intake 7 before heat exchange mechanism 6 heat exchanges, and first heat outlet 8 after heat exchange mechanism 6 heat exchanges connects the hot equipment of using by pipeline 9, and the atmosphere import 10 before heat exchange mechanism 6 heat exchanges is communicated with first heat outlet 8.Heat exchange mechanism 6 is made of first counterflow heat exchanger 11 and second counterflow heat exchanger, 12 serial connections, the lower end of first counterflow heat exchanger 11 and second counterflow heat exchanger 12 is provided with the deashing chamber 13 of connection, hot gas in the hot gas efferent duct 3 is sent into the hot air intake 7 of first counterflow heat exchanger 11 downwards, upwards enter second counterflow heat exchanger 12 through deashing chamber 13 by the lower end, atmosphere in the atmosphere import 10 is sent into second counterflow heat exchanger 12 downwards, upwards enters first counterflow heat exchanger 11 by the lower end and is communicated with first heat outlet 8.The waste heat of second counterflow heat exchanger 12 outlet 14 is connected in series the 3rd counterflow heat exchanger 15, the three counterflow heat exchangers 15 from the top bottom is that second heat outlet 17 on cold wind import 16, the three counterflow heat exchangers 14 tops is communicated with bodies of heater 1 inside.Thermal current directly enters first counterflow heat exchanger, 11 tops from hot gas efferent duct 3, from top to bottom, enter 12 exchanges of second counterflow heat exchanger again, the thermal current of second counterflow heat exchanger 12 is from the bottom up, the thermal current of the 3rd counterflow heat exchanger 15 is from top to bottom, continuous three counterflow exchange, exhaust gas temperature controls to 80 to the end
oBelow the C, Btu utilization can reach more than 95%.The upper end of first counterflow heat exchanger 11, second counterflow heat exchanger 12 and the 3rd counterflow heat exchanger 14 is provided with movable shoot door 18.When black dirt occurring in the exchange pipe shoot door 18 is opened directly and can be cleared up, do not have the dead angle, deashing process is simple and convenient.Medium in the exchange heat process is an air, is divided into two sections air-supplies.First section is to send into air exchange downwards from second counterflow heat exchanger, 12 tops, and entering behind first counterflow heat exchanger 11 is to exchange from the bottom up, is delivered to hot equipment such as drying assembly line or drying room hot blast feeding by 8 outputs of first heat outlet to peak.Second section exchange is that the 3rd counterflow heat exchanger 14 is sent into air exchange from the bottom up, to the top by the burning that heats up in the loopback body of heater 1 again of second heat outlet 17, like this with energy efficient utilization that fuel produced.Hot-blast stove energy exchange medium of the present invention is the exchange of gas gas, and air does not exist fouling and coking, inflammable, explosive phenomenon can not occur, and gas gas exchanges directly with air heat, directly supplies the production demand.Optimum benefits is that programming rate is very fast, and when furnace temperature air-flow ascending air entered exchange point, the medium air-flow was in company with rising, and the short time just can be satisfied the required temperature of production, and beginning regular supply hot gas is produced, and the centre does not need miscellaneous equipment control.Compare with steam boiler supply drying plant, can be energy-conservation more than 65%, compare with heat conducting oil boiler supply drying plant, can be energy-conservation more than 40%.Above-described embodiment only is that the preferred implementation to energy efficient hot air furnace of the present invention is described; be not that the design and the scope of inventing limited; under the prerequisite that does not break away from the present invention program; various external form modification and improvement that those skilled in the art make technical scheme of the present invention all should fall into the protection domain of energy efficient hot air furnace of the present invention.
Claims (5)
1. energy efficient hot air furnace, comprise body of heater, fire grate is set in the body of heater, connect the hot gas efferent duct on the body of heater, it is characterized in that hot gas efferent duct (3) one ends connect the top that is arranged on body of heater (1), be provided with the most combustion chamber (5) that (4) extension is increased along the furnace wall in the body of heater (1) of hot gas efferent duct (3) below.
2. energy efficient hot air furnace according to claim 1, it is characterized in that the hot air intake (7) before hot gas efferent duct (3) other end connects heat exchange mechanism (6) heat exchange, first heat outlet (8) after heat exchange mechanism (6) heat exchange connects the hot equipment of using by pipeline (9), and the atmosphere import (10) before heat exchange mechanism (6) heat exchange is communicated with first heat outlet (8).
3. energy efficient hot air furnace according to claim 2, it is characterized in that heat exchange mechanism (6) is made of first counterflow heat exchanger (11) and second counterflow heat exchanger (12) serial connection, the lower end of first counterflow heat exchanger (11) and second counterflow heat exchanger (12) is provided with the deashing chamber (13) of connection, hot gas in the hot gas efferent duct (3) is sent into the hot air intake (7) of first counterflow heat exchanger (11) downwards, upwards enter second counterflow heat exchanger (12) through deashing chamber (13) by the lower end, atmosphere in the atmosphere import (10) is sent into second counterflow heat exchanger (12) downwards, upwards enters first counterflow heat exchanger (11) by the lower end and is communicated with first heat outlet (8).
4. energy efficient hot air furnace according to claim 3, the waste heat outlet (14) that it is characterized in that second counterflow heat exchanger (12) is connected in series the 3rd counterflow heat exchanger (15) from the top, the bottom of the 3rd counterflow heat exchanger (15) is cold wind import (16), and second heat outlet (17) on the 3rd counterflow heat exchanger (14) top is communicated with body of heater (1) inside.
5. energy efficient hot air furnace according to claim 4 is characterized in that the upper end of first counterflow heat exchanger (11), second counterflow heat exchanger (12) and the 3rd counterflow heat exchanger (14) is provided with movable shoot door (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101388190A CN102278816A (en) | 2011-05-26 | 2011-05-26 | Efficient energy-saving hot blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101388190A CN102278816A (en) | 2011-05-26 | 2011-05-26 | Efficient energy-saving hot blast furnace |
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| CN102278816A true CN102278816A (en) | 2011-12-14 |
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| CN2011101388190A Pending CN102278816A (en) | 2011-05-26 | 2011-05-26 | Efficient energy-saving hot blast furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383144A (en) * | 2013-08-06 | 2013-11-06 | 叙永县马岭粮油食品有限公司 | Hot blast stove |
| CN107166945A (en) * | 2017-06-30 | 2017-09-15 | 厦门市特种设备检验检测院 | Synthetic leather waste gas recovery wound tube heat exchanger device and its heat-exchange method |
Citations (7)
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| JPS63306239A (en) * | 1987-06-05 | 1988-12-14 | Hitachi Ltd | Coal gasification power generating system |
| CN2202248Y (en) * | 1994-04-29 | 1995-06-28 | 李春林 | Double-hearth atmospheric hot-water boiler |
| JPH07208704A (en) * | 1994-01-13 | 1995-08-11 | Mitsubishi Heavy Ind Ltd | Power-plant by gasification of coal |
| CN2347093Y (en) * | 1997-04-29 | 1999-11-03 | 马维珍 | Multipurpose hot-blast stove |
| CN2388557Y (en) * | 1999-01-18 | 2000-07-19 | 沈阳铁路局吉林科学技术研究所 | Firewood-fired hot-pipe air heating furnace |
| CN2500964Y (en) * | 2001-08-24 | 2002-07-17 | 孙明礼 | Pipe network type environmental protection heating boiler |
| CN202119091U (en) * | 2011-05-26 | 2012-01-18 | 黄云生 | High-efficiency energy-saving air heating furnace |
-
2011
- 2011-05-26 CN CN2011101388190A patent/CN102278816A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63306239A (en) * | 1987-06-05 | 1988-12-14 | Hitachi Ltd | Coal gasification power generating system |
| JPH07208704A (en) * | 1994-01-13 | 1995-08-11 | Mitsubishi Heavy Ind Ltd | Power-plant by gasification of coal |
| CN2202248Y (en) * | 1994-04-29 | 1995-06-28 | 李春林 | Double-hearth atmospheric hot-water boiler |
| CN2347093Y (en) * | 1997-04-29 | 1999-11-03 | 马维珍 | Multipurpose hot-blast stove |
| CN2388557Y (en) * | 1999-01-18 | 2000-07-19 | 沈阳铁路局吉林科学技术研究所 | Firewood-fired hot-pipe air heating furnace |
| CN2500964Y (en) * | 2001-08-24 | 2002-07-17 | 孙明礼 | Pipe network type environmental protection heating boiler |
| CN202119091U (en) * | 2011-05-26 | 2012-01-18 | 黄云生 | High-efficiency energy-saving air heating furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383144A (en) * | 2013-08-06 | 2013-11-06 | 叙永县马岭粮油食品有限公司 | Hot blast stove |
| CN107166945A (en) * | 2017-06-30 | 2017-09-15 | 厦门市特种设备检验检测院 | Synthetic leather waste gas recovery wound tube heat exchanger device and its heat-exchange method |
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Application publication date: 20111214 |