CN2476713Y - Coal fired indirect heated high-temp. hot-blast stove - Google Patents
Coal fired indirect heated high-temp. hot-blast stove Download PDFInfo
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- CN2476713Y CN2476713Y CN 01222926 CN01222926U CN2476713Y CN 2476713 Y CN2476713 Y CN 2476713Y CN 01222926 CN01222926 CN 01222926 CN 01222926 U CN01222926 U CN 01222926U CN 2476713 Y CN2476713 Y CN 2476713Y
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- heat exchanger
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Abstract
The utility model discloses an air heating furnace used for drying agricultural materials. The utility model comprises a fire grate 2, a furnace covert type heat exchanger 13 and an air cooler 8. The utility model is characterized in that the outlet terminal of the furnace covert type heat exchanger 13 is connected with a sleeve type heat exchanger 11. The air cooler 8 is communicated with the cold air inlet of the sleeve type heat exchanger 11 through an air duct 9, and also is communicated with the air inlet of the furnace covert type heat exchanger 13 through an air duct 10. The air outlet of the furnace covert type heat exchanger 13 is communicated with the external layer passage of the sleeve type heat exchanger 11. The air duct 10 crosses through a residual hear recovering heat exchanger 5. The utility model has the advantages of reasonable structure and high thermal efficiency, etc.
Description
The utility model relates to a kind of hot-blast stove that is used for dry agricultural material.
The hot-blast stove that generally uses has three types at present, and a kind of is oil burner, and the flue gas that produces after this Combustion of Hot Air Furnace directly removes to add thermal material, contaminated material not only, and expense is too high, is 10 times of coal-fired cost approximately, is inapplicable for the low material of added value (as herbage etc.) particularly; Another kind of type is coal-fired directly heat hot wind furnace, and this stove is directly to add thermal material, not only contaminated material with coal-fired flame, and produce the flue gas peculiar smell, particularly, careless slightly for flammable materials (as herbage etc.), Mars in the flame will be lighted material and cause fire, even blasts; Also having a kind of is coal-fired indirect hot-blast stove, the coal-fired fire smoke gases of this hot-blast stove is through over-heat-exchanger, the cold air heating that enters heat exchanger, produce the low temperature hot blast about clean 250 ℃, be used for grain drying etc., the advantage of this hot-blast stove is a contaminated material not, but all inapplicable for the material that needs high-temperature hot-air (as more than 400 ℃) drying process (as herbage etc.).
The purpose of this utility model is the indirect hot-blast stove that a kind of not contaminated material, drying efficiency height will be provided, can be used for high temperature drying.
The exhanst gas outlet of telescopic heat exchanger 11 is connected to a heat recovery heat exchanger 5, and airduct 10 passes heat recovery heat exchanger 5;
The coal-fired indirect high temperature hot-blast furnace of another kind of version comprises fire grate 2, bonnet formula heat exchanger 13, air-cooler 8, it is characterized in that, the port of export at bonnet formula heat exchanger 13 is connected with a telescopic heat exchanger 11, and the exhanst gas outlet of fire grate 2 communicates with the exhaust gases passes of telescopic heat exchanger 11; The output of air-cooler 8 is an airduct 18, airduct 18 communicates with the outer air inlet of telescopic heat exchanger 11, the outer air outlet of telescopic heat exchanger 11 communicates by the air inlet 16 of warm-air pipe 19 with bonnet formula heat exchanger 13, the air outlet of bonnet formula heat exchanger 13 communicates with the intermediate layer passage of telescopic heat exchanger 11, the intermediate layer passage communicates with the internal layer passage, and the output of internal layer passage connects air-heater 3.
Above-mentioned this coal-fired indirect high temperature hot-blast furnace is characterized in that the exhanst gas outlet of telescopic heat exchanger 11 is connected to a heat recovery heat exchanger 5, and airduct 18 passes heat recovery heat exchanger 5;
The profile of above-mentioned bonnet formula heat exchanger 13 is inverted U-shaped;
Above-mentioned fire grate 2 is a chain furnace grate.
Because the utility model has adopted bonnet formula heat exchanger 13 and telescopic heat exchanger 11 skins by the dual heat exchange method that contains around cold air or the low warm air, makes cold air be able to abundant heating; Reasonably the employing of the chimneying flow direction and waste-heat recoverer has improved the thermal efficiency greatly, so, the utlity model has rational in infrastructure, thermal efficiency advantages of higher.
Fig. 1, Fig. 2, Fig. 3 are respectively the structural representation of the coal-fired indirect high temperature hot-blast furnace of several versions of the utility model;
Fig. 4 is a bonnet formula heat exchanger cross-sectional structure schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1,1 is firing machine, and 2 is chain furnace grate, 3 is air-heater, and 4 is flue, and 5 is heat recovery heat exchanger, 6 is deduster, 7 is air-introduced machine, and 8 is air-cooler, and 9 is airduct, 10 is airduct, 11 is telescopic heat exchanger, and 12 is passage, and 13 for covering on the bonnet formula heat exchanger at fire grate 2 tops.After the flue gas that coal produces through the chain furnace grate 2 burning backs of slowly moving at first heats inverted U-shaped bonnet formula heat exchanger 13 (flue gas flow direction is seen the dotted line of band arrow), heating jacket cartridge type heat exchanger 11, and remove heat recovery heat exchanger 5 through flue 4, enter deduster 6 and air-introduced machine 7 carries out discharging after the smoke abatement and dust control through the flue gas after the heat exchange.Air-cooler 8 is divided into two-way with the air in the atmosphere and blows, one the tunnel enters heat recovery heat exchanger 5 (air stream is seen the solid line of band arrow) carries out the heat exchange first time, enter in the furnace roof by airduct 10 through heated hot air heated, be in the inverted U-shaped bonnet formula heat exchanger 13, carry out the heat exchange second time, air after the heating through passage 12 be blown into the air that airduct 9 enters telescopic heat exchanger 11 outer layer channels from air-cooler 8 and converge, hot-air after converging carries out heat exchange once more in telescopic heat exchanger 11, the clean high-temperature hot air of generation is supplied with drying equipment by air-heater 3 sucking-offs as free of contamination high temperature drying medium.
The coal-fired indirect high temperature hot-blast furnace of the utility model shown in Figure 2, its structure and shown in Figure 1 basic identical, just in Fig. 2, heat recovery heat exchanger 5 is installed between airduct 9, airduct 10 and the air-cooler 8, and airduct 9 and 10 wind have all passed through the heating of heat recovery heat exchanger 5.Air-cooler 8 is divided into two-way after the air in the atmosphere is blown into heat recovery heat exchanger 5, one tunnel process airduct 10 enters bonnet formula heat exchanger 13, another road enters the air inlet of telescopic heat exchanger 11 through airduct 9, and flowing in thereafter air flow and Fig. 1 is identical.
The coal-fired indirect high temperature hot-blast furnace of the utility model shown in Figure 3, its member and Fig. 1, shown in Figure 2 basic identical, but the connected mode of its inner passage, air flow have than big difference.As shown in Figure 3, air-cooler 8 is through behind the heat recovery heat exchanger 5, only communicate by airduct 18 with the outer air inlet of telescopic heat exchanger 11, the outer air outlet of telescopic heat exchanger 11 communicates by the air inlet 16 of warm-air pipe 19 with bonnet formula heat exchanger 13, the air outlet of bonnet formula heat exchanger 13 communicates with the intermediate layer passage of telescopic heat exchanger 11, the intermediate layer passage communicates with the internal layer passage, and the output of internal layer passage connects air-heater 3.After air-cooler 8 blows into heat recovery heat exchanger 5 with the air in the atmosphere, enter telescopic heat exchanger 11 by 18 of airducts, and skin, warm-air pipe 19 by telescopic heat exchanger 11, enter the air inlet 16 of bonnet formula heat exchanger 13 again, air flow afterwards is with shown in Figure 1 identical.
Figure 4 shows that the bonnet formula heat exchanger 13 in the utility model, its profile is inverted U-shaped.Among the figure, 16 is the air inlet of bonnet formula heat exchanger, and 15 and 17 is air outlet, and 14 is dividing plate.Dividing plate 14 is separated into an air intake passage and two air-out passages with bonnet formula heat exchanger.
Claims (7)
1, a kind of coal-fired indirect high temperature hot-blast furnace comprises fire grate (2), bonnet formula heat exchanger (13), air-cooler (8), it is characterized in that, the port of export at bonnet formula heat exchanger (13) is connected with a telescopic heat exchanger (11), and the exhanst gas outlet of fire grate (2) communicates with the exhaust gases passes of telescopic heat exchanger (11); The output of air-cooler (8) is airduct (9) and airduct (10), airduct (9) communicates with the air inlet of telescopic heat exchanger (11), airduct (10) communicates with the air inlet (16) of bonnet formula heat exchanger (13), and the air outlet of bonnet formula heat exchanger (13) communicates with the outer layer channel of telescopic heat exchanger (11).
2, coal-fired indirect high temperature hot-blast furnace according to claim 1 is characterized in that, the exhanst gas outlet of telescopic heat exchanger (11) is connected to a heat recovery heat exchanger (5), and airduct (10) passes heat recovery heat exchanger (5).
3, coal-fired indirect high temperature hot-blast furnace according to claim 2 is characterized in that, airduct (9) and airduct (10) are connected as a single entity at the end by air-cooler (8), and heat recovery heat exchanger (5) is positioned between airduct and the air-cooler (8).
4, a kind of coal-fired indirect high temperature hot-blast furnace comprises fire grate (2), bonnet formula heat exchanger (13), air-cooler (8), it is characterized in that, the port of export at bonnet formula heat exchanger (13) is connected with a telescopic heat exchanger (11), and the exhanst gas outlet of fire grate (2) communicates with the exhaust gases passes of telescopic heat exchanger (11); The output of air-cooler (8) is airduct (18), airduct (18) communicates with the outer air inlet of telescopic heat exchanger (11), the outer air outlet of telescopic heat exchanger (11) communicates with the air inlet (16) of bonnet formula heat exchanger (13) by warm-air pipe (19), the air outlet of bonnet formula heat exchanger (13) communicates with the intermediate layer passage of telescopic heat exchanger (11), the intermediate layer passage communicates with the internal layer passage, and the output of internal layer passage connects air-heater (3).
5, coal-fired indirect high temperature hot-blast furnace according to claim 4 is characterized in that, the exhanst gas outlet of telescopic heat exchanger (11) is connected to a heat recovery heat exchanger (5), and airduct (18) passes heat recovery heat exchanger (5);
6, according to claim 1 or 4 described coal-fired indirect high temperature hot-blast furnaces, it is characterized in that fire grate (2) is a chain furnace grate.
7, according to claim 1 or 4 described coal-fired indirect high temperature hot-blast furnaces, it is characterized in that the profile of bonnet formula heat exchanger (13) is inverted U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01222926 CN2476713Y (en) | 2001-04-29 | 2001-04-29 | Coal fired indirect heated high-temp. hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01222926 CN2476713Y (en) | 2001-04-29 | 2001-04-29 | Coal fired indirect heated high-temp. hot-blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2476713Y true CN2476713Y (en) | 2002-02-13 |
Family
ID=33639624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01222926 Expired - Fee Related CN2476713Y (en) | 2001-04-29 | 2001-04-29 | Coal fired indirect heated high-temp. hot-blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2476713Y (en) |
-
2001
- 2001-04-29 CN CN 01222926 patent/CN2476713Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |