CN201563592U - Centralized heat supply type heat-supply furnace for bulk curing barn to bake - Google Patents

Centralized heat supply type heat-supply furnace for bulk curing barn to bake Download PDF

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Publication number
CN201563592U
CN201563592U CN2009202538916U CN200920253891U CN201563592U CN 201563592 U CN201563592 U CN 201563592U CN 2009202538916 U CN2009202538916 U CN 2009202538916U CN 200920253891 U CN200920253891 U CN 200920253891U CN 201563592 U CN201563592 U CN 201563592U
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CN
China
Prior art keywords
combustion
combustion chamber
heat
barn
heat exchanger
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Expired - Fee Related
Application number
CN2009202538916U
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Chinese (zh)
Inventor
王明湖
庞子乾
谭先朝
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KUNMING KANGLIXIN ELECTRONIC MACHINERY CO Ltd
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KUNMING KANGLIXIN ELECTRONIC MACHINERY CO Ltd
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Priority to CN2009202538916U priority Critical patent/CN201563592U/en
Application granted granted Critical
Publication of CN201563592U publication Critical patent/CN201563592U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a centralized heat supply type heat-supply furnace for a bulk curing barn to bake, belongs to baking and drying facilities of agricultural and sideline products, and particularly belongs to heat-supply furnaces for tobacco flue-curing barn in the tobacco field. The heat-supply furnace mainly comprises a burning furnace, a heat exchanger, a smoke-guiding pipe, a combustion fan and the flue-curing barn; the entire burning furnace and a secondary combustion chamber are sealed in a heating chamber; the combustion chamber is connected with the secondary combustion chamber through a smoke mouth; a smoke outlet of the secondary combustion chamber is connected to the heat exchanger arranged in each intensive baking chamber through the smoke pipe; and the combustion fan is connected to the pipeline of the heat exchanger. The device adopts a negative-pressure reversed gasification and secondary combustion manners; the coal is fully burnt, thereby achieving excellent energy-saving and environment-friendly performances; compared with the traditional heat-supply equipment for the intensive tobacco flue-curing chamber, and more than 30 percent of energy is saved, more than 60 percent of atmospheric contaminant discharge amount is reduced; in addition, the workload of adding coal, removing slag and maintenance in the tobacco flue-curing process can be greatly reduced, and more than 30 percent of labor intensity can be reduced compared with the traditional baking heat supply equipment.

Description

Central heating type bulk curing barn baking heating stove
Technical field
The utility model relates to a kind of bulk curing barn baking heating stove, belongs to baking, drying facility technical field, particularly belongs to tobacco roasting, drying facility.
Background technology
The bulk curing barn tobacco flue-curing mode that extensively adopts is that a barn is joined a cover baking heating equipment at present, has just stipulated the every technical specification of bulk curing barn baking heating stove 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, all belong to " one to one " heat-supplying mode from basic, 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 in the mode of " curing barn cluster ", be that 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 owing to the type equipment belongs to special equipment, design on the one hand, production, operation, maintenance all need specialized factory and personnel, can't apply in vast rural area.On the other hand the disposable infusion of financial resources of the type equipment big, field condition is had relatively high expectations, thereby be difficult to the tobacco flue-curing field that trend is located in the rural area.In addition, require from method for flue-curing tobacco leaves, heat supplying process relates to multistage constant temperature, intensification, the type equipment is owing to adopt hot water or steam to carry out the heat transmission, entrained temperature is subjected to very big restriction (generally can only reach below 250 ℃), thereby is difficult to satisfy method for flue-curing tobacco leaves requirement (as requiring to guarantee that temperature does not descend in the barn during the big hydrofuge).
In sum, up to now how carrying out " central heating " in intensive tobacco flue-curing process still is the difficult problem of pendulum in face of numerous technical stafves author.
Summary of the invention
The utility model provides a kind of central heating type bulk curing barn baking heating stove, need not that special trade operating personnel and cost are cheap relatively, energy-conserving and environment-protective performance excellence, can reduce labour intensity.
The realization the technical solution of the utility model is: mainly by combustion furnace, heat exchanger, lead smoke pipe, combustion fan and barn and form, it is characterized in that: whole combustion furnace and secondary combustion chamber thereof are sealed in the heating clamber, the combustion chamber connects secondary combustion chamber by smoke guide port, the exhanst gas outlet of secondary combustion chamber is connected to the heat exchanger that is provided with in each bulk curing barn by leading smoke pipe, connects combustion fan on the pipeline of heat exchanger.
Combustion furnace blast pipe described in the utility model is positioned at more than the coal filling hole height, and the smoke guide port of combustion furnace is positioned at more than the fire grate, below the coal filling hole height.
A described combustion furnace disposes two above secondary combustion chambers and exhanst gas outlet thereof and is connected with the smoke pipe of leading that is communicated with each barn heat exchanger.
The inwall of described combustion chamber, secondary combustion chamber adopts refractory brick, is provided with the secondary air distribution outlet in secondary combustion chamber.
In the combustion chamber, at first utilize the reverse gasification mode of negative pressure that coal is gasified, generate fuel gas based on carbon monoxide by oxidation and reduction reaction:
C+O 2=CO 2+ heat (oxidation reaction)
CO 2+ C+ heat=2CO 1(reduction reaction)
High-temperature flue gas is lighted and formed in the burning zone rear section that fuel gas passes through under suction function in the combustion chamber, this high-temperature flue gas mainly is made up of burning residue fuel gas, unburnt coal dust and carbon dioxide, nitrogen etc., high-temperature flue gas enters secondary combustion chamber by smoke guide port under suction function, because secondary wind also enters secondary combustion chamber simultaneously and mixes with high-temperature flue gas under suction function, thereby high-temperature flue gas is carried out secondary and fully burns indoor the lighting once more of second-time burning:
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)
After the abundant once more completing combustion of process secondary combustion chamber, flue-gas temperature is heated the high-temperature flue gas of formation more than 800 ℃ that raise once more.
Because combustion chamber, secondary combustion chamber all adopt special refractory brick and relevant insulation measure, thereby can guarantee that high-temperature flue gas still can reach more than 700 ℃ after secondary combustion chamber output, whole in addition combustion furnace is sealed in the bulk curing barn heating clamber, thereby can guarantee that small part heat that said process discharges still can be used for the tobacco flue-curing process and can not cause damage.
The high-temperature flue gas that said process produces is sent into this barn heat exchanger by leading smoke pipe under each barn air-introduced machine effect, and under the circulating fan effect heat is brought into barn, realizes the required intensification of tobacco flue-curing, constant temperature requirement.
In the flue gas transmission course, leading on the one hand smoke pipe adopts refractory material to make, can transmit flue-gas temperature more than 1500 ℃ and can oxidizedly not damage, the simultaneously whole smoke pipe transmission overall process of leading is in the heating clamber sealing state, thereby can guarantee to lead smoke pipe heat in the process of transmission high-temperature flue gas and do not leak, also can not cause energy loss.
Said process has realized that a combustion furnace provides tobacco flue-curing institute energy requirement for many bulk curing barns simultaneously.When indivedual barns are ceased fire or are in stopped status; because the combustion fan of this barn is in halted state; thereby concerning secondary combustion chamber, can not form negative pressure gravitation; high-temperature flue gas also can not sent into this barn heat exchanger, thereby whole high-temperature flue gas is realized the dynamic adjustments purpose of " distribution according to need ".
From said process as can be seen, the utility model has carried out the twice combustion utilization to fuel, cooperate the high-performance heat exchanger of each barn can effectively improve fuel availability, with tradition fuel only being carried out primary combustion utilizes mutually the specific energy fuel savings more than 30%, dust, combustible are also fully burnt once more in the process of second-time burning simultaneously, thereby compare significantly raising with legacy equipment from the fume environment protection performance that heat exchanger is discharged.In addition, said process can be simultaneously for many barns provide heat, and operations such as coal, ash disposal only need to carry out in a set of equipment, compare with traditional approach and can reduce labour intensity more than 30%.
Description of drawings
Fig. 1 is an individual layer barn structural representation of the present utility model,
Fig. 2 is that the utility model is at double-deck barn structural representation.
Each label is represented successively among the figure: combustion furnace 1; Heat exchanger 2; Lead smoke pipe 3; Combustion fan 4; Combustion chamber 5; Refractory brick 6; Dust Storage Room 7; Grate 8; Coal filling hole 9; Ash disposal mouth 10; Smoke guide port 11; Secondary combustion chamber 12; Refractory brick 13; Secondary air distribution outlet 14; Access hole 15; Exhanst gas outlet 16; Blast pipe 17; Heating clamber 18, barn 19.
The specific embodiment
Referring to Fig. 1,2, this barn mainly by combustion furnace 1, heat exchanger 2, lead smoke pipe 3, combustion fan 4 and barn 19 and form, whole combustion furnace 1 and secondary combustion chamber 12 thereof are sealed in the heating clamber 18, the combustion chamber 5 of combustion furnace 1 connects secondary combustion chamber 12 by smoke guide port 11, the exhanst gas outlet 16 of secondary combustion chamber 12 is connected to the heat exchanger 2 that is provided with in each bulk curing barn 19 by leading smoke pipe 3, connects combustion fan 4 on the pipeline of heat exchanger 2.The combustion chamber 5 of barn described in the utility model, secondary combustion chamber 12 and the inwall of leading smoke pipe 3 all adopt refractory brick, have good insulation and anti-oxidation damage effect.The part wall of heating clamber 18 and the wall of part barn 19 are shared, can reduce to take up an area of and thermal loss.In secondary combustion chamber 12, be provided with secondary air distribution outlet 14, more help the mixed combustion of secondary wind.In the secondary combustion chamber 12 of described combustion furnace, dispose two with upper smoke outlet 16 and lead smoke pipe 3 accordingly, to pass in each barn 19.
After finishing, bulk curing barn dress cigarette starts the circulating fan that is in separately in the heating clamber, in combustion chamber 5, add starting fluid and light the coal seam, when any barn need heat up, supporting temperature and humidity control instrument starts this barn combustion fan 4 automatically and forms negative pressure induced wind, combustion air is sent into combustion chamber 5 from the combustion-supporting blast pipe 17 that is positioned at top of combustion chamber under this suction function, fuel in combustion air effect lower combustion chamber 5 at first oppositely gasifies, under suction function, continue to flow downward then and pass through that burning zone enters secondary combustion chamber 12 by smoke guide port 11 and mix once more and burn with secondary wind, the high-temperature flue gas that burning produces enters heat exchanger 2 by leading smoke pipe 3 under this barn combustion fan suction function, because circulating fan needs to pass through heat exchanger 2 after the barn air is extracted out, send barn then back to, this process and heat exchanger 2 carry out abundant energy exchange, realize the high-temperature flue gas energy is imported into the purpose of barn.
When this barn needed constant temperature, combustion fan 4 was out of service automatically, negative pressure induced wind defunctionalization then, and combustion furnace 1 stops to provide heat to this barn heat exchanger 2, realizes the automatic constant-temperature purpose.
The utility model can be regulated burning velocity automatically according to load condition, when supply barn quantity increases, because each barn combustion fan air inducing effect makes the air capacity that enters combustion chamber 5, secondary combustion chamber 12 strengthen, thereby fuel combustion speeds up, the flue-gas temperature of exporting rise, heat outputting power strengthens, the flue-gas temperature of the export decline of opposite institute, heat outputting power reduction, realization autobalance purpose.

Claims (4)

1. a central heating type bulk curing barn toasts heating stove, mainly by combustion furnace, heat exchanger, lead smoke pipe, combustion fan and barn and form, it is characterized in that: whole combustion furnace and secondary combustion chamber thereof are sealed in the heating clamber, the combustion chamber connects secondary combustion chamber by smoke guide port, the exhanst gas outlet of secondary combustion chamber is connected to the heat exchanger that is provided with in each bulk curing barn by leading smoke pipe, connects combustion fan on the pipeline of heat exchanger.
2. central heating type bulk curing barn baking heating stove according to claim 1, it is characterized in that: the combustion furnace blast pipe is positioned at more than the coal filling hole height, and the smoke guide port of combustion furnace is positioned at more than the fire grate, below the coal filling hole height.
3. central heating type bulk curing barn according to claim 1 baking heating stove is characterized in that: combustion furnace disposes two above secondary combustion chambers and exhanst gas outlet thereof and is connected with the smoke pipe of leading that is communicated with each barn heat exchanger.
4. central heating type bulk curing barn baking heating stove according to claim 1, it is characterized in that: the inwall of combustion chamber, secondary combustion chamber adopts refractory brick, is provided with the secondary air distribution outlet in secondary combustion chamber.
CN2009202538916U 2009-12-14 2009-12-14 Centralized heat supply type heat-supply furnace for bulk curing barn to bake Expired - Fee Related CN201563592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202538916U CN201563592U (en) 2009-12-14 2009-12-14 Centralized heat supply type heat-supply furnace for bulk curing barn to bake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202538916U CN201563592U (en) 2009-12-14 2009-12-14 Centralized heat supply type heat-supply furnace for bulk curing barn to bake

Publications (1)

Publication Number Publication Date
CN201563592U true CN201563592U (en) 2010-09-01

Family

ID=42655872

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202538916U Expired - Fee Related CN201563592U (en) 2009-12-14 2009-12-14 Centralized heat supply type heat-supply furnace for bulk curing barn to bake

Country Status (1)

Country Link
CN (1) CN201563592U (en)

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Granted publication date: 20100901

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