CN202119092U - Reverse combustion central heating furnace - Google Patents
Reverse combustion central heating furnace Download PDFInfo
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- CN202119092U CN202119092U CN2011201881785U CN201120188178U CN202119092U CN 202119092 U CN202119092 U CN 202119092U CN 2011201881785 U CN2011201881785 U CN 2011201881785U CN 201120188178 U CN201120188178 U CN 201120188178U CN 202119092 U CN202119092 U CN 202119092U
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- furnace
- grating
- combustion furnace
- combustion
- fire
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Abstract
The utility model discloses a reverse combustion central heating furnace, which centers on a combustion furnace (18) hermetically arranged in a double-deck conjoint heating chamber of an intensive curing barn. Fume output pipes (19) are mounted in bilateral symmetry and respectively connected with the lower portion of a fume guide pipe (5), a heat exchanger (3) is connected to the upper portion of the fume guide pipe (5), and an outlet of the heat exchanger (3) is connected with a negative-pressure draught fan (1) through a flue (2). Two cooling fans (11) are mounted on two sides of the combustion furnace (18) respectively, outlets of the cooling fans (11) are connected with an air pipe (12), two air inlets are arranged on the combustion furnace (18), one of the air inlets is a reverse air inlet (14) and positioned above an upper grate, the other air inlet is a positive air inlet (15) and positioned below an lower grate, and two air return pipes (13) are further arranged at the top of the combustion furnace (18). By means of the reverse combustion central heating furnace, combust can be repeatedly combusted for heat exchanging and utilizing, combust utilizing rate is effectively increased, and the environment protection performance of the fume discharged from a heat exchanger is greatly improved as compared with traditional equipment. The reverse combustion central heating furnace is capable of providing heat for multiple curing barns at all positions simultaneously.
Description
Technical field
The utility model relates to the drying of tobacco, specifically, relates to the heating plant of barn.
Background technology
The bulk curing barn tobacco flue-curing mode that extensively adopts at present is that a barn is joined a cover baking heating equipment, has just stipulated bulk curing barn baking heating stove each item technical specification of this " one to one " in " bulk curing barn technical specification (trying) " that State Tobacco Monopoly Bureau issues.
Though domestic many producers are engaged in bulk curing barn baking heating stove and make, form, performance are also different, from basic, all belong to " one to one " heat-supplying mode, and promptly a cover heating equipment can only provide heat for a barn baking.In addition; Since carrying out intensive tobacco flue-curing standard from country, barn is all built with the mode of " curing barn cluster ", and promptly each roasting point is built many barns simultaneously; Thereby also need supporting many covers to toast heating equipment; Because coal in the tobacco flue-curing process, slagging-off, maintenance workload are big, thereby need be equipped with a large amount of operating personnel at each roasting point in roasting season, this has been in roasting extremely busy tobacco grower for undoubtedly this and brings bigger operating pressure.
In recent years; Domestic minority place begins to attempt adopting hot-water boiler, steam boiler that central heating is carried out in tobacco flue-curing; But because the type equipment belongs to special equipment, design, production, operation, maintenance all need the professional, can't apply in vast rural area.The disposable infusion of financial resources of the type equipment is many, high to the field condition requirement on the other hand, thereby is difficult to come into the tobacco flue-curing field in rural area.In addition, require from method for flue-curing tobacco leaves, heat supplying process relates to multistage constant temperature, intensification, and the type equipment is owing to adopt hot water or steam to carry out the heat transmission, and entrained temperature receives very big restriction, thereby is difficult to satisfy the method for flue-curing tobacco leaves requirement.
The application that relates to the barn heating plant in the Chinese patent document only has 200720090651.X number " tobacco-leaf bulk curing barn is with horizontal twin furnace heater ", No. 201020102366.7 " heating furnaces that are used for bulk curing barn " etc., and these patented technologies fail to overcome the heat supply defective of tobacco roasting.
On the other hand, the bulk curing barn of domestic extensive employing at present is the construction of flat bed disjunctor, and barn construction land amount is bigger, and especially in the mountain area, disposable large tracts of land construction cost is high.
In sum, how in intensive tobacco flue-curing process, carrying out " central heating " up to now, how effectively to practice thrift the barn construction land, still is the difficult problem of pendulum in face of vast tobacco flue-curing worker.
Summary of the invention
The purpose of the utility model is to provide a kind of reverse burning central heating furnace, to solve the various difficult problems of tobacco roasting central heating.
The reverse burning central heating furnace that the designer provides; The center is a combustion furnace, and burner hearth, fire grate and the Hui Cang of common coal stove arranged, and combustion furnace is sealed in the middle of double-deck disjunctor heating clamber of bulk curing barn; Its left-right symmetric is equipped with the flue gas efferent duct; This flue gas efferent duct connects respectively leads the smoke pipe below, leads the smoke pipe top and connects heat exchanger, and heat exchanger exit connects the negative pressure induced wind machine through smoke pipe; The both sides of combustion furnace are separately installed with a cooling blower, and the cooling blower outlet is connected with ajutage; Combustion furnace has two air intlets, and wherein, one is reverse air intlet, is positioned at the upper fire-grating elevation-over, and another is the forward air intlet, is positioned at lower fire grating height below; The top of central burner stove also has two backwind tubes.
Above-mentioned combustion furnace has two-layer fire grate; The inner space of stove is divided into three sections spaces by two-layer fire grate, and wherein, being positioned at the above space of upper fire-grating is the upper furnace of reverse burning; The space is the lower hearth of forward combustion between upper fire-grating and lower fire grating, and being positioned at the following space of lower fire grating is grey storehouse; Upper fire-grating is rearranged by hollow pipe, and an end concentrates connection backwind tube, the other end to concentrate the connection cooling blower.
Above-mentioned flue gas efferent duct with lead junction, smoke pipe below the deashing box arranged, be used to remove the dust that flue gas brings.
The operation principle of reverse burning central heating furnace is:
Under the effect of negative pressure induced wind machine, combustion air gets into upper furnace and participates in burning from the reverse air inlet that is positioned at furnace roof:
C+O
2=CO
2+ heat (oxidation reaction)
Because combustion furnace flue gas delivery outlet is positioned at below the upper fire-grating, more than the lower fire grating; Thereby above-mentioned combustion process will be carried out reverse burning under suction function; Flue gas successively passes through burning zone, hollow pipe fire grate in this process, gets into lower hearth with thermal-flame stream mode subsequently:
C+O
2=CO
2+ heat (unburnt carbon dust in the combustion chamber)
CO+O
2=CO
2+ heat (unburnt fuel gas in the combustion chamber)
CH
4+ O
2=CO
2+ heat (unburnt fuel gas in the combustion chamber)
Equally under the effect of negative pressure induced wind machine, combustion air gets into from the forward air inlet that is positioned at grey storehouse, gets into lower hearth and participates in burning after successively passing through Hui Cang, lower fire grating:
C+O
2=CO
2+ heat (oxidation reaction)
CO
2+ C+ heat=2CO
1(reduction reaction)
Flue gas mixed near lower hearth, flue gas delivery outlet with upper furnace burning back flue gas under suction function after lower hearth burnt, and the unburnt carbon dust of lower hearth this moment, fuel gas are fired, also fully burn once more by upper furnace thermal-flame flow point:
C+O
2=CO
2+ heat (unburnt carbon dust in the combustion chamber)
CO+O
2=CO
2+ heat (unburnt fuel gas in the combustion chamber)
CH
4+ O
2=CO
2+ heat (unburnt fuel gas in the combustion chamber)
In the said process, fuel has all carried out repeated combustion, and combustion rate effectively improves on the one hand, and environmental-protecting performance is excellent simultaneously.
After above-mentioned burning, high-temperature flue gas gets into through the flue gas delivery outlet and leads smoke pipe, gets into heat exchanger then and participates in heat exchange, the air of heating barn.
Owing to combustion furnace, lead smoke pipe and heat exchanger all is in the heating clamber, thereby guarantee that few part heat that high-temperature flue gas discharges still can be used for the tobacco flue-curing process and can not cause damage in transmission course.
The designer points out: each heating clamber domestic demand of levels barn is equipped with the circulating fan of high-temp resisting high-humidity resisting degree.
The designer also points out: the utility model cooperates the hot blast door to use; Can regulate burning velocity automatically according to load condition; When supply barn quantity increased, because the negative pressure induced wind machine is at full speed, the nominal operation state, thereby fuel combustion speeded up, the institute's flue-gas temperature of export rising, the increasing of heat outputting power; The flue-gas temperature of the export decline of opposite institute, heat outputting power reduction, realization autobalance purpose.
The reverse burning central heating furnace of the utility model carries out the repeated combustion utilization to fuel; Cooperate the high-performance heat exchanger of barn can effectively improve fuel availability; With tradition fuel only being carried out primary combustion utilizes mutually the specific energy fuel savings more than 20%; Dust, combustible are also fully burnt once more in the repeated combustion process simultaneously, thereby compare significantly raising with legacy equipment from the fume environment protection performance that heat exchanger is discharged.In addition, also can be simultaneously for up and down many barns provide heat, operations such as coal, ash disposal only need carried out in a set of equipment, compare with traditional approach and can reduce labour intensity more than 30%.
Description of drawings
Fig. 1 is the reverse burning central heating furnace structural representation of the utility model, and Fig. 2 is the application sketch map of the utility model in double-deck barn structure.1 is the negative pressure induced wind machine among the figure, and 2 is smoke pipe, and 3 is heat exchanger, and 4 is fin, and 5 for leading smoke pipe, and 6 is upper fire-grating; 7 is the deashing box, and 8 is lower fire grating, and 9 is the forward air inlet, and 10 is coal filling hole, and 11 is cooling blower, and 12 is ajutage; 13 is backwind tube, and 14 is reverse air inlet, and 15 is levels barn dividing plate, and 16 is upper strata barn heating clamber, and 17 is lower floor's barn heating clamber; 18 is combustion furnace, and 19 is the flue gas efferent duct, and 20 is upper furnace, and 21 is lower hearth, and 22 is grey storehouse.
The specific embodiment
Reverse burning central heating furnace like Fig. 1; The center is a combustion furnace 18; Combustion furnace 18 is sealed in the middle of double-deck disjunctor heating clamber of bulk curing barn, and its left-right symmetric is equipped with flue gas efferent duct 19, and this flue gas efferent duct 19 connects the below of leading smoke pipe 5 respectively; The top of leading smoke pipe 5 connects heat exchanger 3, and heat exchanger 3 outlets connect negative pressure induced wind machine 1 through smoke pipe 2; The both sides of combustion furnace 18 are separately installed with a cooling blower 11, and cooling blower 11 outlets are connected with ajutage 12; Combustion furnace 18 has two air intlets, and wherein, one is reverse air intlet 14, is positioned at the upper fire-grating elevation-over, and another is a forward air intlet 15, is positioned at lower fire grating height below; The top of combustion furnace 18 also has two backwind tubes 13.Combustion furnace 18 has two-layer fire grate, and wherein, the space of upper fire-grating more than 6 is upper furnace 20, and the space is a lower hearth 21 between upper fire-grating 6 and the lower fire grating 8, and lower fire grating 8 following spaces are grey storehouse 22; Upper fire-grating 6 is rearranged by hollow pipe, and an end concentrate connect backwind tube 13, the other end is concentrated and is connected cooling blower 11.Flue gas efferent duct 19 with lead junction, smoke pipe 5 below deashing box 7 arranged.
Claims (3)
1. reverse burning central heating furnace; Burner hearth, fire grate and Hui Cang that common coal stove is arranged, the center that it is characterized in that it is combustion furnace (18), combustion furnace (18) is sealed in the middle of double-deck disjunctor heating clamber of bulk curing barn; Its left-right symmetric is equipped with flue gas efferent duct (19); This flue gas efferent duct (19) connects the below of leading smoke pipe (5) respectively, and the top of leading smoke pipe (5) connects heat exchanger (3), and heat exchanger (3) outlet connects negative pressure induced wind machine (1) through smoke pipe (2); The both sides of combustion furnace (18) are separately installed with a cooling blower (11), and cooling blower (11) outlet is connected with ajutage (12); Combustion furnace (18) has two air intlets, and one is reverse air intlet (14), is positioned at the upper fire-grating elevation-over, and another is forward air intlet (15), is positioned at lower fire grating height below; The top of combustion furnace (18) also has two backwind tubes (13).
2. reverse burning central heating furnace as claimed in claim 1 is put; It is characterized in that said combustion furnace (18) has two-layer fire grate; Wherein, The above space of upper fire-grating (6) is upper furnace (20), and the space is lower hearth (21) between upper fire-grating (6) and the lower fire grating (8), and the following space of lower fire grating (8) is grey storehouse (22); Upper fire-grating (6) is rearranged by hollow pipe, and an end concentrates connection backwind tube (13), the other end to concentrate connection cooling blower (11).
3. reverse burning central heating furnace as claimed in claim 1 is put, and there is deashing box (7) junction below it is characterized in that said flue gas efferent duct (19) and leading smoke pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201881785U CN202119092U (en) | 2011-06-07 | 2011-06-07 | Reverse combustion central heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201881785U CN202119092U (en) | 2011-06-07 | 2011-06-07 | Reverse combustion central heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119092U true CN202119092U (en) | 2012-01-18 |
Family
ID=45460153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201881785U Expired - Fee Related CN202119092U (en) | 2011-06-07 | 2011-06-07 | Reverse combustion central heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103519337A (en) * | 2013-10-25 | 2014-01-22 | 王清伟 | High-density negative-pressure circulating-type stack-type curing barn system by utilizing tobacco leaves for metabolizing heat energy |
| CN105004173A (en) * | 2015-07-17 | 2015-10-28 | 刘怀旭 | Environment-friendly energy-saving drying air-heating system |
-
2011
- 2011-06-07 CN CN2011201881785U patent/CN202119092U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103519337A (en) * | 2013-10-25 | 2014-01-22 | 王清伟 | High-density negative-pressure circulating-type stack-type curing barn system by utilizing tobacco leaves for metabolizing heat energy |
| CN103519337B (en) * | 2013-10-25 | 2015-12-02 | 王清伟 | A kind of high density negative-pressure cyclic formula accumulation type barn system utilizing tobacco leaf metabolism heat energy |
| CN105004173A (en) * | 2015-07-17 | 2015-10-28 | 刘怀旭 | Environment-friendly energy-saving drying air-heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20170607 |