CN102213541A - Coal hot air furnace capable of simultaneously generating steam - Google Patents
Coal hot air furnace capable of simultaneously generating steam Download PDFInfo
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- CN102213541A CN102213541A CN2011101379153A CN201110137915A CN102213541A CN 102213541 A CN102213541 A CN 102213541A CN 2011101379153 A CN2011101379153 A CN 2011101379153A CN 201110137915 A CN201110137915 A CN 201110137915A CN 102213541 A CN102213541 A CN 102213541A
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Abstract
The invention relates to a coal hot air furnace capable of simultaneously generating steam, which comprises a furnace body, a combustion chamber and an air mixing chamber, wherein the combustion chamber and the air mixing chamber are arranged in the furnace body, a high-temperature outlet of the furnace body is divided into two flues, one flue is provided with a combined air heat exchanger, an outlet of the heat exchanger is connected with a flue regulating valve, the other flue is provided with a steam generator, an outlet of the steam generator is connected with a flue regulating valve, the two flues behind the regulating valves are merged together to be connected with a dust remover, the dust remover is connected with a draught fan through a pipeline, and the draught fan is connected with a chimney. The coal hot air furnace can be used for simultaneously producing pure hot air and steam, thereby meeting the requirement on chemical production. The invention has the advantages of simple structure, capacity of randomly regulating production loads, high thermal efficiency and reduced management cost.
Description
Technical field:
The present invention relates to a kind of equipment that in chemical engineering, uses, the particularly a kind of coal-fired hot-blast stove that can produce steam simultaneously.
Background technology:
In China's extensive use, it has become the regeneration product of electric heat source and traditional steam power thermal source to hot-blast stove in many industries as thermal power machinery.
The operation principle of hot-blast stove be high-temperature flue gas that fuel combustion is produced by different heat exchange forms with air heat, thereby produce pure high-temperature hot-air, utilize these high-temperature hot-airs to be used for dry materials.Hot-blast stove in the market is commonly coal furnace, and the main type of furnace has chain furnace, fluidized bed furnace, Circulation fluidized-bed furnace etc., and these stoves have not only satisfied the adaptability problem of different regions coals, have also improved the overall thermal efficient of hot-blast stove simultaneously greatly.
But often use two kinds of thermals source in Chemical Manufacture simultaneously, promptly high-temperature hot-air is used for drying, steam is used for reaction or companion's heat, just need use two kinds of stoves of high temperature hot-blast furnace and steam boiler so aborning simultaneously.Bring the problem of several aspects thus: the one, the equipment investment height, management and personal expenditures are many; The 2nd, many stove operations, the operating cost height, the thermal efficiency is low, the energy consumption height; The 3rd, increase the smoke gas treatment difficulty, also may bring the difficulty of approving and initiate a project and examining simultaneously.
Summary of the invention:
The objective of the invention is for solving high-temperature hot-air and steam boiler and deposit, and bring that efficient is low, energy consumption and operation and the high problem of administrative expenses, and invent a kind of coal-fired hot-blast stove of producing steam simultaneously.
As above design, technical scheme of the present invention is: a kind of coal-fired hot-blast stove that can produce steam simultaneously, comprise combustion chamber and wind mixed chamber in body of heater and the body of heater, it is characterized in that: two flues are told in the high temperature outlet of body of heater, wherein on a flue combination type air heat exchanger is housed, the outlet of heat exchanger connects the flue control valve, on another flue steam generator is housed, the outlet of steam generator connects the flue control valve, two flues behind the control valve also together, connect deduster, deduster connects air-introduced machine by pipeline, air-introduced machine is connected with chimney.
Above-mentioned air-introduced machine is told the bypass of a flue gas recirculation wind, and the outlet of this bypass is communicated with the combustion chamber of body of heater and wind mixed chamber.
Two flues that the high temperature outlet of above-mentioned body of heater is told be arranged in parallel.
Combinations thereof formula air heat exchanger is formed by high, medium and low temperature heat exchanger combination.
Combinations thereof formula air heat exchanger is connected with the heat exchange air blast.
The present invention has following advantage and good effect:
1,, therefore burning and heat exchange can be divided for split-type structural independently, so help the abundant burning of fuel and the high efficient heat exchanging of high-temperature flue gas owing to tell burning flue and two flues of heat exchange flue in the outlet of the high temperature of body of heater.
2,, therefore select different heat exchange forms for use, with service life and the high efficient heat exchanging of guaranteeing heat exchanger for the different temperatures section is suspicious because heat exchanger has been adopted unitized exchanger.
3, owing to punish out wind circulating system, therefore under the prerequisite that does not increase excess air coefficient, reduce the tube wall temperature of heat exchanger, improve the service life of heat exchanger and the overall thermal efficient of hot-blast stove at air-introduced machine.
4, can in the rated load of hot-blast stove, regulate the thermic load of hot blast and steam side arbitrarily according to producing needs, realize by regulating two control valve openings on the flue.By above technology, can realize producing simultaneously hot blast and steam, hot blast temperature can reach 650 ℃, and the life-span, the thermal efficiency can reach more than 85% more than 10 years, and hot blast and quantity of steam can be according to the demand volume productions.
Description of drawings:
Fig. 1 is a structural representation of the present invention.Wherein: 1-Boiling Combustion stove 2-combination type air heat exchanger, 2.1-heat exchange air blast, 3-steam generator, 3.1-economizer, 4-deduster, 5-air-introduced machine, 6-connect flue, 7-smoke regulating valve, 8-chimney, 9.1 and 9.2-flue gas recirculation flue, 1.1-primary zone, 1.2-secondary combustion chamber, 1.3-wind mixed chamber, 1.4-combustion fan, 1.5-coaling system, 2.1-heat exchange air blast, 3.1-evaporimeter, 3.2-economizer.
The specific embodiment:
Embodiment 1: fluidized bed furnace coal furnace (1) is provided with primary zone (1.1), secondary combustion chamber (1.2), and the high-temperature flue gas of primary zone and secondary combustion chamber production is sent into wind mixed chamber (1.3).Be respectively equipped with two flues (6.1) and (6.2) in wind mixed chamber (1.3), flue (6.1) connects the combination type air heat exchanger (2) of hot-air system, flue (6.2) connects the steam generator (3) of vapour system, high-temperature flue gas respectively with air, water high efficient heat exchanging after, connect deduster (4), air-introduced machine (5), chimney (8) discharging through flue (6), smoke regulating valve (7).
Embodiment 2: fluidized bed furnace coal furnace (1) is provided with primary zone (1.1) and secondary combustion chamber (1.2), and the high-temperature flue gas that they are produced is admitted to wind mixed chamber (1.3).Wind mixed chamber (1.3) is respectively equipped with two flues (6.1) and (6.2), flue (6.1) connects the combination type air heat exchanger (2) of hot-air system, flue (6.2) connects the steam generator (3) of vapour system, high-temperature flue gas respectively with air, water high efficient heat exchanging after flue (6), smoke regulating valve (7) connect deduster (4), deduster connects air-introduced machine (5).Tell two branch roads behind the air-introduced machine (5), one tunnel (9.1) flue gas connects chimney (8) discharging, another road (9.2) smoke backflow is to primary zone, secondary combustion chamber (1.1,1.2) and wind mixed chamber (1.3), it is circulated air, air circulation is regulated by control valve, the tube side resistance that flue gas is carried and discharged is by the overbottom pressure realization of blower fan.
Combinations thereof formula air heat exchanger is welded by high, medium and low temperature heat exchanger combination, and is connected with heat exchange air blast (2.1).
The course of work of the present invention is: the primary zone (1.1) that sends into combustion furnace (1) through broken bunker coal through feed system, Boiling Combustion in 950 ℃ of left and right sides hot environments, the high-temperature flue gas that produces is carried unburnt particle and CO secretly, entering dual firing chamber (1.2) burns away, the particle of after-flame is stayed the grey storehouse of this chamber by gravitational settling, and clean high-temperature flue gas enters wind mixed chamber (1.3), blending part cold wind (or circulating flue gas), temperature is controlled at 800-850 ℃, and hot blast heat exchange and steam heat-exchanging passage are sent in pulling respectively by air-introduced machine (5).In the hot blast heat exchanger channels, high-temperature flue gas passes through high, medium and low temperature heat exchanger successively, and with air inversion heat exchange (150-650 ℃ of hot-blast outlet temperature range), the low-temperature flue gas after the heat exchange connects deduster (4) import through flue (6.1) and control valve (7.1); In the steam channel, high-temperature flue gas passes through steam generator (3) successively, economizer (3.1) produces saturated vapor (vapor (steam) temperature, pressure are decided according to producing needs) with the water heat exchange, low-temperature flue gas after the heat exchange connects deduster (4) import through flue (6.2) and control valve (7.2); The variation of hot blast temperature and load, vapor (steam) temperature and load is regulated realization by the flue control valve (7) of two branch roads, and is adjusted arbitrarily in the 50-100% load range.Two strands of flue gases and flow to deduster (4) dedusting after, connect air-introduced machine (5).Tell two branch road flue gas recirculation flues 9.1,9.2 behind the air-introduced machine (5), one tunnel (9.1) flue gas connects chimney (8) discharging, another road (9.2) smoke backflow burner hearth (1.1) is made combustion-supporting and wind mixed chamber (1.2) the do dilution cold wind of secondary wind, also claim circulated air, air circulation is regulated by control valve, the tube side resistance that flue gas is carried and discharged is by the overbottom pressure realization of blower fan.
This invention and conventional high temperature hot-blast furnace and steam boiler also compare with scheme, efficiency of combustion improves 13-15%, the thermal efficiency is up to 85%, improve more than 11%, year is saved 4400 tons of coals (calorific value 5500Kcal/Kg), 2,640,000 yuan/year of cost savings (600 yuan/ton), surplus labour cost saves 40 ten thousand yuan/year.
Claims (5)
1. the coal-fired hot-blast stove that can produce steam simultaneously, comprise combustion chamber and wind mixed chamber in body of heater and the body of heater, it is characterized in that: two flues are told in the high temperature outlet of body of heater, wherein on a flue combination type air heat exchanger is housed, the outlet of heat exchanger connects the flue control valve, on another flue steam generator is housed, the outlet of steam generator connects the flue control valve, two flues behind the control valve also together, connect deduster, deduster connects air-introduced machine by pipeline, air-introduced machine is connected with chimney.
2. a kind of coal-fired hot-blast stove that can produce steam simultaneously according to claim 1, it is characterized in that: above-mentioned air-introduced machine is told the bypass of a flue gas recirculation wind, and the outlet of this bypass is communicated with the combustion chamber of body of heater and wind mixed chamber.
3. a kind of coal-fired hot-blast stove that can produce steam simultaneously according to claim 1 is characterized in that: two flues that the high temperature outlet of above-mentioned body of heater is told be arranged in parallel.
4. a kind of coal-fired hot-blast stove that can produce steam simultaneously according to claim 1 is characterized in that: combinations thereof formula air heat exchanger is formed by high, medium and low temperature heat exchanger combination.
5. according to claim 1 or the 4 described a kind of coal-fired hot-blast stoves that can produce steam simultaneously, combinations thereof formula air heat exchanger is connected with the heat exchange air blast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101379153A CN102213541A (en) | 2011-05-26 | 2011-05-26 | Coal hot air furnace capable of simultaneously generating steam |
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| CN2011101379153A CN102213541A (en) | 2011-05-26 | 2011-05-26 | Coal hot air furnace capable of simultaneously generating steam |
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| CN102213541A true CN102213541A (en) | 2011-10-12 |
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| CN2011101379153A Pending CN102213541A (en) | 2011-05-26 | 2011-05-26 | Coal hot air furnace capable of simultaneously generating steam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352334A (en) * | 2015-12-09 | 2016-02-24 | 故城北新建材有限公司 | Hot smoke recycling system |
| CN106969351A (en) * | 2017-05-08 | 2017-07-21 | 中国华能集团清洁能源技术研究院有限公司 | It is a kind of to reduce the flue gas recirculation method and system of CFBB NOx emission |
| CN108426466A (en) * | 2018-04-10 | 2018-08-21 | 江苏大信环境科技有限公司 | Combustion chamber Quick temperature adjustment |
| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
| CN111981489A (en) * | 2020-08-31 | 2020-11-24 | 重庆川然节能技术有限公司 | Incinerator secondary combustion chamber smoke temperature self-adjusting system |
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2011
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352334A (en) * | 2015-12-09 | 2016-02-24 | 故城北新建材有限公司 | Hot smoke recycling system |
| CN106969351A (en) * | 2017-05-08 | 2017-07-21 | 中国华能集团清洁能源技术研究院有限公司 | It is a kind of to reduce the flue gas recirculation method and system of CFBB NOx emission |
| CN108426466A (en) * | 2018-04-10 | 2018-08-21 | 江苏大信环境科技有限公司 | Combustion chamber Quick temperature adjustment |
| CN108426466B (en) * | 2018-04-10 | 2024-02-09 | 江苏大信环境科技有限公司 | Quick temperature regulator for combustion chamber |
| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
| CN109028569B (en) * | 2018-09-09 | 2024-01-05 | 无锡博众热能环保设备有限公司 | Flue gas full-cycle hot-blast stove |
| CN111981489A (en) * | 2020-08-31 | 2020-11-24 | 重庆川然节能技术有限公司 | Incinerator secondary combustion chamber smoke temperature self-adjusting system |
| CN111981489B (en) * | 2020-08-31 | 2023-05-16 | 重庆川然节能技术有限公司 | Smoke temperature self-adjusting system for secondary combustion chamber of incinerator |
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Application publication date: 20111012 |