CN201555435U - Curing and heat supplying furnace of negative pressure reverse burning type intensive curing barn - Google Patents
Curing and heat supplying furnace of negative pressure reverse burning type intensive curing barn Download PDFInfo
- Publication number
- CN201555435U CN201555435U CN2009202538278U CN200920253827U CN201555435U CN 201555435 U CN201555435 U CN 201555435U CN 2009202538278 U CN2009202538278 U CN 2009202538278U CN 200920253827 U CN200920253827 U CN 200920253827U CN 201555435 U CN201555435 U CN 201555435U
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- furnace
- heat exchanger
- chimney
- negative pressure
- burning
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Abstract
The utility model relates to an intensive tobacco leaf curing barn, which belongs to the curing and drying facilities for farm and sideline products, particularly to a tobacco leaf curing barn in the tobacco field, and mainly consists of a heating furnace, a heat exchanger, an air inlet pipe, a blower, a gas circulator and a chimney, wherein a smoke side outlet and a burning-out chamber are arranged at the upper part adjacent to a furnace bridge, the burning-out chamber is connected with the heat exchanger of spiral finned tube through a smoke guide pipe, the outlet of the heat exchanger is connected into the pipe of the chimney through a Venturi tube, the blower is connected to the other end of the chimney, the combustion-supporting air inlet pipe is connected to a height above the coal feeding opening of the heating furnace, and the smoke side outlet is formed above a furnace grate and below the coal feeding opening. The utility model adopts the methods of negative pressure reverse gasification and secondary burning, and therefore the coal is burned rather sufficiently and the energy-saving and environmental protection performances become excellent, and in addition, the workload for coal feeding, deslagging and maintenance during tobacco leaf curing can be reduced to a great degree.
Description
Technical field
The utility model relates to a kind of baking heating stove that is used for bulk curing barn tobacco flue-curing, belongs to baking, drying facility technical field, also belongs to tobacco roasting facility technology field simultaneously.
Background technology
The bulk curing barn baking heating stove that extensively adopts at present mainly adopts and is just burning stove, i.e. fuel upwards burning in burner hearth has just been stipulated this every technical specification of just burning stove in " bulk curing barn technical specification (trying) " that State Tobacco Monopoly Bureau issues.
With just burn stove and compare, the anti-stove that burns can significantly promote tail gas clean emission performance, thereby be the reverse of coal furnace future development, yet the anti-burning stove that extensively adopts mainly exists the grate heatproof to require height at present, the air-introduced machine condition of work is abominable, service life is short, problems such as fuel availability is not high, just announced a kind of high temperature resistant corundum anti-burn grate as patent CN1438449, patent 02233543.9 has been announced a kind of high temperature resistant anti-burn grate, these technology have to a certain degree prolonged anti-burning stove fire grate service life, but do not tackle the problem at its root, simultaneously owing to must use special material to make, thereby improved anti-burning stove cost of manufacture, limited the fast development of anti-burning stove to a certain extent.
Simultaneously, because the anti-kiln gas temperature higher (generally more than 700 ℃) of burning, thereby outlet flue is in the high temperature sintering state for a long time, thereby have problems service life, patent 200720149252.6 solves anti-burning stove problem in service life with regard to having announced a kind of mode of recirculated water cooling that adopts, after adopting this mode, converter life can necessarily be improved, but still fail thoroughly to break off relations problem, recirculated water needs to take away big energy in cooling procedure on the one hand, this causes the huge energy loss for the application scenario that does not need hot water, and there is scale problems in simultaneously general water circulation cooling, and the line service amount is bigger, manufacturing cost is higher.
In addition, in anti-burning stove output flue gas, contain imperfect combustion carbon dust on the one hand, also contain the fuel gas that burns incompletely on a small quantity simultaneously, as carbon monoxide, methane etc., classical inverse is burnt stove does not have independently secondary furnace, thereby above combustible is burnt once more and direct discharging, also environment has been caused pollution when causing energy dissipation.
It is in sum, counter that to burn fire grate, the furnace wall service life that boiler face faces and how further to improve the energy-saving and environmental protection performance still be instead to burn the common problem that stove exists and await solving.
Summary of the invention
The utility model provides a kind of and can directly adopt common grate and need not the fire coal baking stove of special material, and the grate of this oven and furnace wall long service life can be further energy-conservation, reduce Air Pollutant Emission.
The realization the technical solution of the utility model is: mainly be made up of heating furnace, heat exchanger, blast pipe, air blast, circulating fan and chimney, it is characterized in that: establish side outlet flue and secondary furnace on top near grate, secondary furnace connects spiral finned heat exchanger by leading smoke pipe, the outlet of heat exchanger inserts on the pipe of chimney with Venturi tube, air blast is connected to the other end of stovepipe, combustion-supporting blast pipe is connected to more than the heating furnace coal filling hole height, and the side outlet flue is positioned at more than the fire grate, below the coal filling hole height.
The technical solution of the utility model also comprises:
Described secondary furnace independently is provided with heating furnace, and joins with the furnace wall of heating furnace, is provided with the secondary air mouth at burn-out chamber wall.
The outlet of described air blast adopts tangential ways of connecting to be connected to stovepipe.
The beneficial effects of the utility model are:
Air blast tangentially inserts, and the outlet of heat exchanger inserts chimney with Venturi tube, can in burner hearth, produce negative pressure, and the tail gas after the burning does not directly pass through air blast, improved the blower fan working environment, significantly promoted blower fan service life, can guarantee that flue gas in the work does not leak, realizes the excellent properties of smokeless heat supply simultaneously; In addition, adopt reverse gasification mode, effectively avoid the generation of tar, thereby stop in the flue gas transmission course heat exchanging device and lead smoke pipe to form and block; Flue gas, dust and the fuel gas that produces through reverse gasification effectively improved fuel availability, improved the tail gas environmental-protecting performance can further thoroughly burning in independent secondary furnace behind the secondary air distribution, realizes the purpose of clean emission; For avoiding grate to be in hot environment for a long time, adopt side smoke mode, do not pass through grate because of flue gas but draw from the side, furnace wall of grate top, be provided with refractory brick in the inboard, furnace wall simultaneously, thereby can guarantee furnace wall and grate service life.
The principle that realizes technique scheme is as follows:
Under the air blast effect, form negative pressure in the whole body of heater, combustion air enters top of combustion chamber from combustion-supporting blast pipe under this suction function, under the combustion air effect, take fire (burning zone) near the coal seam of grate in the combustion chamber and produce carbon dioxide and heat:
C+O
2=CO
2+ heat (burning zone)
Under the effect of this heat, the coal seam of closing on burning zone begins to take place reduction reaction and generates fuel gas:
CO
2+ C+ heat=2CO
1(reducing zone)
Fuel gas mainly is made up of carbon monoxide, methane, unburnt carbon dust.In stove under the suction function, fuel gas further passes through burning zone, the part fuel gas in this process with superfluous combustion air effect after burned, the residue fuel gas enters secondary furnace under suction function, because suction function, secondary wind enters secondary furnace by the secondary air mouth and mixes with fuel gas, and mixed gas is by the spark ignition from the combustion chamber:
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)
Under suction function, send into heat exchanger after process secondary furnace gas fume after burning is fully burnt to combustible, finish the efficient conversion of fuel to institute's calorific requirement.
From said process as can be seen, the utility model has carried out the twice combustion utilization to fuel, effectively avoid classical inverse to burn the problem that stove exists, realizing further energy-conservation 30% or more, the excellent properties of minimizing Air Pollutant Emission more than 60% simultaneously on this basis.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label is represented successively among the figure: air inlet 1; Lead smoke pipe 2; Secondary air mouth 3; Secondary furnace 4; Exhanst gas outlet 5; Grate 6; Ash disposal mouth 7; Coal filling hole 8; Furnace wall 9; Furnace wall fin 10; Furnace roof fin 11; Air blast 12; Combustion-supporting blast pipe 13; Spiral finned heat exchanger 14; Chimney 15; Circulating fan 16; Return air inlet 17; Barn 18; Refractory brick 19; Combustion chamber 20; Side outlet flue 21; Dust Storage Room 22.
The specific embodiment
Referring to Fig. 1, this baking heating stove is mainly by the heating furnace that has heating stove now, spiral finned heat exchanger 14, combustion-supporting blast pipe 13, air blast 12, circulating fan 16 and chimney 15 are formed, establish side outlet flue 21 and secondary furnace 4 on top near grate 6, all be lined with refractory brick 19 in the furnace wall 9 of secondary furnace 4 and heating furnace, secondary furnace 4 connects spiral finned heat exchanger 14 by leading smoke pipe 2, the outlet of heat exchanger inserts on the pipe of chimney 15 with Venturi tube, the tangential air outlet of air blast 12 is connected to the other end of chimney 15, and combustion-supporting blast pipe 13 body of wall outside heating clamber is connected to the heating furnace top.The locular wall of secondary furnace 4 is provided with secondary air mouth 3, and the oxygen that replenishes mixes with fuel gas, lights in the secondary furnace 4 of the condition of high temperature.The furnace wall of heating furnace and the furnace roof outside are provided with furnace wall fin 10 and furnace roof fin 11 respectively, spiral finned heat exchanger 14 is fixed on the furnace roof, circulating fan 16 is arranged on spiral finned heat exchanger 14 tops and sharf over against spiral finned heat exchanger 14, will be from the air heat heating of barn 18, recycled back barn 18 is to tobacco flue-curing.
Claims (3)
1. a negative pressure counter-burning type bulk curing barn toasts heating stove, mainly form by heating furnace, heat exchanger, blast pipe, air blast, circulating fan and chimney, it is characterized in that: establish side outlet flue and secondary furnace on top near grate, secondary furnace connects spiral finned heat exchanger by leading smoke pipe, the outlet of heat exchanger inserts on the pipe of chimney with Venturi tube, air blast is connected to the other end of stovepipe, combustion-supporting blast pipe is connected to more than the heating furnace coal filling hole height, and the side outlet flue is positioned at more than the fire grate, below the coal filling hole height.
2. negative pressure counter-burning type bulk curing barn according to claim 1 baking heating stove is characterized in that: secondary furnace independently is provided with and joins with the furnace wall of heating furnace, is provided with the secondary air mouth at burn-out chamber wall.
3. negative pressure counter-burning type bulk curing barn baking heating stove according to claim 1, it is characterized in that: blower export tangentially is connected to stovepipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202538278U CN201555435U (en) | 2009-12-04 | 2009-12-04 | Curing and heat supplying furnace of negative pressure reverse burning type intensive curing barn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202538278U CN201555435U (en) | 2009-12-04 | 2009-12-04 | Curing and heat supplying furnace of negative pressure reverse burning type intensive curing barn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555435U true CN201555435U (en) | 2010-08-18 |
Family
ID=42615119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202538278U Expired - Fee Related CN201555435U (en) | 2009-12-04 | 2009-12-04 | Curing and heat supplying furnace of negative pressure reverse burning type intensive curing barn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004173A (en) * | 2015-07-17 | 2015-10-28 | 刘怀旭 | Environment-friendly energy-saving drying air-heating system |
-
2009
- 2009-12-04 CN CN2009202538278U patent/CN201555435U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| DD01 | Delivery of document by public notice |
Addressee: Kunming Kanglixin Electronic Machinery Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Kunming Kanglixin Electronic Machinery Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |