CN101473995A - Heat exchanger for roasting tobacco leaf - Google Patents
Heat exchanger for roasting tobacco leaf Download PDFInfo
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- CN101473995A CN101473995A CNA2009100768566A CN200910076856A CN101473995A CN 101473995 A CN101473995 A CN 101473995A CN A2009100768566 A CNA2009100768566 A CN A2009100768566A CN 200910076856 A CN200910076856 A CN 200910076856A CN 101473995 A CN101473995 A CN 101473995A
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- heat exchanger
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- exchanger rig
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Abstract
The invention discloses a heat exchanger device used for tobacco flue curing. The heat exchanger device comprises a combustion furnace and a heat exchanger made of inorganic nonmetallic materials; the combustion furnace is of a hollow structure and is provided with a fume outlet; a heat exchanger made of the inorganic nonmetallic materials is of a hollow structure and is provided with a fume inlet and an air outlet; and the fume inlet is in butt joint with the fume outlet. The heat exchanger device can help provide clean and stable curing circulating hot air for a flue-cured tobacco house, and has better energy-saving effect.
Description
Technical field
The present invention relates to heat transfer technology, particularly a kind of heat-exchanger rig that is used for tobacco flue-curing.
Background technology
Tobacco leaf need just can make the flue-cured tobacco that meets standard-required through after uniform temperature and the baking of time.Equipment commonly used in the tobacco flue-curing at present comprises heat-exchanger rig and tobacco flue-curing house, and wherein heat-exchanger rig comprises combustion furnace and metallic recuperator.Described combustion furnace acts as a fuel with coal, and the high-temperature flue gas that burning produces carries out heat exchange by the air in described heat exchanger and the tobacco flue-curing house, the temperature of tobacco flue-curing house is raise, thereby the tobacco leaf in the tobacco flue-curing house is toasted.
Because the heat exchanger in the heat-exchanger rig adopts metal material, has following shortcoming:
1, corrosion can take place in metal for a long time, and the ferric oxide particles of corrosion can be sent to tobacco flue-curing house with air and pollute, and causes heat exchanger shortening in service life simultaneously and increases operating cost;
2, outer metallic surface need be coated with protective paint, and in the heat exchanging process of high-temperature flue gas and air, protective paint can soften volatilization gradually, forms micro-organic principle, objectionable impurities is delivered to tobacco flue-curing house pollute;
3, because the metal material heat storage capacity is low, when fluctuation took place in the thermal source burning of combustion furnace, heat transfer process also can cause the tobacco flue-curing house temperature unstable or wayward followed by fluctuating, and causes coal-fired waste;
4, metal structure densification, heat exchange area is less, and energy-saving effect is not obvious.
Summary of the invention
In view of this, the invention provides a kind of heat-exchanger rig that is used for tobacco flue-curing, this heat-exchanger rig can provide clean, stable bake cycle hot blast for tobacco flue-curing house, and possesses energy-saving effect preferably.
Technical scheme of the present invention is achieved in that
A kind of heat-exchanger rig that is used for tobacco flue-curing, key are that this heat-exchanger rig comprises: the heat exchanger of combustion furnace and Inorganic Non-metallic Materials;
Described combustion furnace is a hollow structure, has exhanst gas outlet;
The heat exchanger of described Inorganic Non-metallic Materials is a hollow structure, has smoke inlet and exhaust outlet; Described smoke inlet docks with described exhanst gas outlet.
Preferably, described combustion furnace comprises: burner hearth and fire grate;
Described burner hearth is a hollow structure, and the bottom has fire door for the movable flashboard regulated on the sidewall, and the top is detachable stove roof plate, has exhanst gas outlet on this stove roof plate;
Described fire grate is fixed in the hollow space of described burner hearth.
Preferably, described roof of the furnace is provided with support member, supports the supporting plate of the heat exchanger of the described Inorganic Non-metallic Materials of carrying, and this supporting plate is provided with opening at the joint of described smoke inlet and described exhanst gas outlet.
Preferably, the heat exchanger of described Inorganic Non-metallic Materials comprises: the heat exchanger tube of Inorganic Non-metallic Materials, plate holder cover and seal diaphragm;
The plate holder cover of described Inorganic Non-metallic Materials comprises the clamping plate of two hollow cube structures, and wherein a clamping plate bottom has the smoke inlet that docks with described exhanst gas outlet, and another piece clamping plate top has exhaust outlet;
The heat exchanger tube of described Inorganic Non-metallic Materials is more than two and layered arrangement; The two ends of described heat exchanger tube are separately fixed in the hole of being opened according to the heat exchanger tube distributing position on two relative sidewalls of two clamping plates;
The seal diaphragm of described Inorganic Non-metallic Materials is fixed on the hollow space of described clamping plate; Per two are separately fixed at the adjacent described seal diaphragm of two clamping plates hollow space and position, lay respectively at the upper and lower of one deck heat exchanger tube.
Preferably, also be distributed with installing hole on the described clamping plate;
The heat exchanger of described Inorganic Non-metallic Materials also comprises: fixture, its two ends are installed in respectively in two installing holes on two clamping plate.
Preferably, described exhaust outlet connects chimney.
Preferably, described heat-exchanger rig also comprises: the hot blast switch room;
Described hot blast switch room is the hollow cube structure, the heat exchanger of ccontaining described combustion furnace and Inorganic Non-metallic Materials;
A sidewall of described hot blast switch room is provided with for the air after the heat exchanger heating of Inorganic Non-metallic Materials and enters the axial flow blower air port of tobacco flue-curing house and the return air inlet that refluxes for the air in the tobacco flue-curing house;
Another sidewall of described hot blast switch room is provided with first opening that passes for described fire door and supplies described second opening that flashboard passes of regulating, and the top is provided with the 3rd opening that passes for described chimney.
Preferably, temperature control thermal resistance is installed on the sidewall of the exit of described chimney and described hot blast switch room.
Preferably, the heat exchanger of described Inorganic Non-metallic Materials, for the coefficient of expansion less than 5.0 * 10
-6The ceramic fire resistant heat exchanger of/K;
Described combustion furnace is the prefabricated component of fire-resistant ramming material, perhaps is the metal welding fitting.
Preferably, the heat exchanger of described combustion furnace and the described nonmetallic materials structure that is formed in one.
As seen, the heat exchanger that comprises Inorganic Non-metallic Materials in the heat-exchanger rig provided by the present invention, because Inorganic Non-metallic Materials is corrosion-resistant, so use corrosion can not take place for a long time yet, pollute thereby avoided the pollutant after the corrosion to be sent to tobacco flue-curing house with air; Owing to the Inorganic Non-metallic Materials smooth surface, need not to be coated with protective paint again, so in the heat exchanging process of high-temperature flue gas and air, the softening problem of volatilizing, objectionable impurities being delivered to tobacco flue-curing house of surfacing can not take place at outer surface; Also because the heat storage capacity height of Inorganic Non-metallic Materials even the burning of the thermal source of combustion furnace is fluctuateed, also can provide stable.Satisfy the circulating air of instructions for use, saved fire coal; Last because the design feature of Inorganic Non-metallic Materials makes heat exchange area bigger, energy-saving effect is obvious.
Description of drawings
Fig. 1 is the cross-sectional view of heat-exchanger rig in the embodiment of the invention;
Fig. 2 is the perspective view of combustion furnace shown in Fig. 1 and heat exchanger;
Fig. 3 is the partial side view of combustion furnace shown in Fig. 1;
Fig. 4 is the front view of a clamping plate perforate sidewall in the plate holder cover shown in Figure 1;
Fig. 5 is a flue gas flow direction schematic diagram in the embodiment of the invention.
The specific embodiment
For making objects and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the cross-sectional view of heat-exchanger rig in the embodiment of the invention, and the arrow among Fig. 1 is represented flue gas flow direction.Fig. 2 is the perspective view of combustion furnace shown in Fig. 1 and heat exchanger, wherein knows internal structure for diagram, has also carried out broken section among Fig. 2.With reference to figure 1 and Fig. 2, this heat-exchanger rig comprises the heat exchanger 4 of hot blast switch room 3, combustion furnace 5 and Inorganic Non-metallic Materials.
Combustion furnace 5 comprises: burner hearth 51 and fire grate 52.Wherein,
Burner hearth 51 is a hollow structure, and the bottom has fire door 511 for the movable flashboard regulated 514 (not shown among Fig. 2) on the sidewall, and the top is dismountable stove roof plate, has exhanst gas outlet 513 on this stove roof plate.The top of burner hearth 51 also is provided with support member 181 and 182 (not shown in figure 1)s, and an end is installed on the combustion furnace 5, and the other end supports the horizontal supporting plate 19 of a carrying heat exchanger 4.
Prefabricated component or metal welding fitting that above-mentioned combustion furnace 5 constitutes for fire-resistance rammed mass.
Fig. 3 is the partial side view of combustion furnace shown in Fig. 1, as can be seen when adjusting can be regulated the position of flashboard 514, just can change the size of the combustion air inlet of solid arrow indication, the combustion air inlet is used to blast combustion air, thereby makes the coal-fired fully burning of carrying on the fire grate 52.Above-mentioned combustion air inlet can also be as ash hole, the ashes that form behind the cleaning fired coal combustion.
The heat exchanger 4 of Inorganic Non-metallic Materials comprises: the heat exchanger tube 6 of Inorganic Non-metallic Materials, plate holder cover 7 and seal diaphragm 8.In embodiments of the present invention, above-mentioned Inorganic Non-metallic Materials is that the coefficient of expansion is less than 5.0 * 10
-6The ceramic refractory of/K, for example alumina-silica, magnalium matter, clay matter, mullite, cordierite, dichroite-mullite matter and carbonization are siliceous etc., and heat exchanger 4 is for utilizing the high temperature burnt product of these Inorganic Non-metallic Materials.Wherein,
The heat exchanger tube 6 of Inorganic Non-metallic Materials is more than two and layered arrangement, and the two ends of heat exchanger tube 6 are separately fixed in the hole of opening according to heat exchanger tube 6 distributing positions on the relative sidewall of two clamping plates.In the present embodiment, for the exhaust gas temperature that guarantees chimney 9 is lower than design temperature, heat exchanger tube 6 be distributed as 5 layers totally 25 and 5 layers lay respectively on four horizontal planes that are parallel to each other.The distribution of heat exchanger tube 6 forms group's distribution of minor diameter like this, make the space heat exchange area maximum of unit are, can reach and save coal-fired purpose, certainly according to actual needs, can also heat exchanger tube 6 be set to other numbers of plies and radical according to experiment and result of calculation.
The effect of seal diaphragm 8 is to make the flow direction of flue gas meet preset requirement, seal diaphragm 8 is fixed on the hollow space of described clamping plate, per two are separately fixed at the adjacent seal diaphragm 8 of two clamping plates hollow space and position, lay respectively at the upper and lower of the described heat exchanger tube 6 of one deck.
Fig. 4 is the front view of a clamping plate perforate sidewall in the plate holder cover 7 shown in Figure 1, and wherein the seal diaphragm shown in the solid line 8 is fixed in these clamping plate, and the seal diaphragm 8 shown in the dotted line is fixed in another piece clamping plate.
Above-mentioned heat exchanger 4 and combustion furnace 5 structure that is formed in one.Fix, reach seal diaphragm 8 as heat exchanger tube 6 and plate holder cover 7 and is fixed in the plate holder cover 7 at each place, fixed position in the heat exchanger 4, all can adopt ceramic material fixing means commonly used, for example pastes.
Hot blast switch room 3 is the hollow cube structure, ccontaining described combustion furnace 5 and heat exchanger 4.A sidewall of hot blast switch room 3 is provided with for the air after heat exchanger 4 heating and enters the axial flow blower air port 1 of tobacco flue-curing house and the return air inlet 2 that refluxes for the air in the tobacco flue-curing house.By axial flow blower air port 1 and return air inlet 2, the air in the tobacco flue-curing house can with hot blast switch room 3 in exchange by the air after heat exchanger 4 heating.Second opening 32 that also is provided with first opening 31 that the fire door 511 for combustion furnace 5 passes on another sidewall of hot blast switch room 3 and passes for the flashboard regulated 514 of combustion furnace 5, the top is provided with the 3rd opening 33 that passes for described chimney 9.
In the present embodiment, thermal resistance 16 also is installed on the sidewall of the exit of chimney 9 and hot blast switch room 3, by measuring the thermocouple show value of thermal resistance 16, can measure the temperature of current high temperature flue-cured tobacco, thereby operate control, for example, reach the stable temperature that flue-cured tobacco requires that meets by adjusting coal amount, combustion-supporting air quantity and chimney aperture etc.Above-mentioned measuring method is an existent method in the prior art, repeats no more here.
With reference to flue gas among the figure 5 flow to schematic diagram (wherein arrow representative flow to), the operation process of the heat-exchanger rig of the embodiment of the invention is as follows:
At first, fire coal is invested burner hearth 51 from the fire door 511 of 3 outsides, hot blast switch room,, in burner hearth 51, blast combustion air, so that coal-fired fully burning from the combustion air inlet along with the continuous input of fire coal;
Secondly, because fired coal combustion, air in the burner hearth 51 is heated to form hot flue gas, enter plate holder cover 7 by the smoke inlet 71 on exhanst gas outlet on the burner hearth 51 513 and the plate holder cover 7, owing to be subjected to the obstruct of first seal diaphragm 8 in the clamping plate of right side, flue gas flows along the ground floor heat exchanger tube 6 of below; After flue gas flowed out from ground floor heat exchanger tube 6, owing to be subjected to the obstruct of first seal diaphragm 8 in the clamping plate of left side, flue gas flowed along second layer heat exchanger tube 6; By that analogy, shown in the solid arrow among flow direction Fig. 5 of flue gas, finally discharge by chimney 9.
In above-mentioned flow of flue gas process, hot flue gas is constantly with plate holder cover 7 and heat exchanger tube 6 heating, plate holder cover 7 and heat exchanger tube 6 constantly offer medium air on every side by the mode of radiation, convection current and conduction with heat, thereby the medium air temperature is raise, the continual tobacco flue-curing house of sending into of heated then hot-air forms clean circulating air.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of heat-exchanger rig that is used for tobacco flue-curing is characterized in that, this heat-exchanger rig comprises: the heat exchanger of combustion furnace and Inorganic Non-metallic Materials;
Described combustion furnace is a hollow structure, has exhanst gas outlet;
The heat exchanger of described Inorganic Non-metallic Materials is a hollow structure, has smoke inlet and exhaust outlet; Described smoke inlet docks with described exhanst gas outlet.
2, heat-exchanger rig as claimed in claim 1 is characterized in that, described combustion furnace comprises: burner hearth and fire grate;
Described burner hearth is a hollow structure, and the bottom has fire door for the movable flashboard regulated on the sidewall, and the top is detachable stove roof plate, has exhanst gas outlet on this stove roof plate;
Described fire grate is fixed in the hollow space of described burner hearth.
3, heat-exchanger rig as claimed in claim 2, it is characterized in that, described roof of the furnace is provided with support member, supports the supporting plate of the heat exchanger of the described Inorganic Non-metallic Materials of carrying, and this supporting plate is provided with opening at the joint of described smoke inlet and described exhanst gas outlet.
4, as each described heat-exchanger rig of claim 1 to 3, it is characterized in that the heat exchanger of described Inorganic Non-metallic Materials comprises: the heat exchanger tube of Inorganic Non-metallic Materials, plate holder cover and seal diaphragm;
The plate holder cover of described Inorganic Non-metallic Materials comprises the clamping plate of two hollow cube structures, and wherein a clamping plate bottom has the smoke inlet that docks with described exhanst gas outlet, and another piece clamping plate top has exhaust outlet;
The heat exchanger tube of described Inorganic Non-metallic Materials is more than two and layered arrangement; The two ends of described heat exchanger tube are separately fixed in the hole of being opened according to the heat exchanger tube distributing position on two relative sidewalls of two clamping plates;
The seal diaphragm of described Inorganic Non-metallic Materials is fixed on the hollow space of described clamping plate; Per two are separately fixed at the adjacent described seal diaphragm of two clamping plates hollow space and position, lay respectively at the upper and lower of one deck heat exchanger tube.
5, heat-exchanger rig as claimed in claim 4 is characterized in that, also is distributed with installing hole on the described clamping plate;
The heat exchanger of described Inorganic Non-metallic Materials also comprises: fixture, its two ends are installed in respectively in two installing holes on two clamping plate.
6, heat-exchanger rig as claimed in claim 4 is characterized in that, described exhaust outlet connects chimney.
7, heat-exchanger rig as claimed in claim 6 is characterized in that, described heat-exchanger rig also comprises: the hot blast switch room;
Described hot blast switch room is the hollow cube structure, the heat exchanger of ccontaining described combustion furnace and Inorganic Non-metallic Materials;
A sidewall of described hot blast switch room is provided with for the air after the heat exchanger heating of Inorganic Non-metallic Materials and enters the axial flow blower air port of tobacco flue-curing house and the return air inlet that refluxes for the air in the tobacco flue-curing house;
Another sidewall of described hot blast switch room is provided with first opening that passes for described fire door and supplies described second opening that flashboard passes of regulating, and the top is provided with the 3rd opening that passes for described chimney.
8, heat-exchanger rig as claimed in claim 7 is characterized in that, temperature control thermal resistance is installed on the sidewall of the exit of described chimney and described hot blast switch room.
9, heat-exchanger rig as claimed in claim 1 is characterized in that, the heat exchanger of described Inorganic Non-metallic Materials, for the coefficient of expansion less than 5.0 * 10
-6The ceramic fire resistant heat exchanger of/K;
Described combustion furnace is the prefabricated component of fire-resistant ramming material, perhaps is the metal welding fitting.
10, heat-exchanger rig as claimed in claim 1 is characterized in that, the heat exchanger of described combustion furnace and the described nonmetallic materials structure that is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100768566A CN101473995A (en) | 2009-01-22 | 2009-01-22 | Heat exchanger for roasting tobacco leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100768566A CN101473995A (en) | 2009-01-22 | 2009-01-22 | Heat exchanger for roasting tobacco leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101473995A true CN101473995A (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100768566A Pending CN101473995A (en) | 2009-01-22 | 2009-01-22 | Heat exchanger for roasting tobacco leaf |
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| CN (1) | CN101473995A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697838B (en) * | 2009-10-28 | 2013-01-09 | 宜都欧亚陶瓷有限公司 | Joint ceramic heat exchanger for tobacco driers and manufacturing method thereof |
| CN108386830A (en) * | 2018-02-07 | 2018-08-10 | 四川省烟草公司泸州市公司 | Flue-cured tobacco biomass fuel combustion gasification all-in-one oven |
| CN112432360A (en) * | 2020-10-19 | 2021-03-02 | 浙江明新能源科技有限公司 | Integrated combustion device of curing barn |
-
2009
- 2009-01-22 CN CNA2009100768566A patent/CN101473995A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697838B (en) * | 2009-10-28 | 2013-01-09 | 宜都欧亚陶瓷有限公司 | Joint ceramic heat exchanger for tobacco driers and manufacturing method thereof |
| CN108386830A (en) * | 2018-02-07 | 2018-08-10 | 四川省烟草公司泸州市公司 | Flue-cured tobacco biomass fuel combustion gasification all-in-one oven |
| CN108386830B (en) * | 2018-02-07 | 2019-06-07 | 四川省烟草公司泸州市公司 | Flue-cured tobacco biomass fuel combustion gasification all-in-one oven |
| CN112432360A (en) * | 2020-10-19 | 2021-03-02 | 浙江明新能源科技有限公司 | Integrated combustion device of curing barn |
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Open date: 20090708 |