CN203068781U - Hot blast stove - Google Patents
Hot blast stove Download PDFInfo
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- CN203068781U CN203068781U CN 201220738827 CN201220738827U CN203068781U CN 203068781 U CN203068781 U CN 203068781U CN 201220738827 CN201220738827 CN 201220738827 CN 201220738827 U CN201220738827 U CN 201220738827U CN 203068781 U CN203068781 U CN 203068781U
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- air
- hot
- blast
- blast stove
- wind
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Abstract
The utility model discloses a hot blast stove which comprises a combustor and a stove body. The stove body is vertically arranged and comprises an upper portion barrel body and a lower portion reverse conic body which are mutually connected. A top cover is arranged at the top of the upper portion barrel body. An ash discharging port is formed in the bottom of the lower portion reverse conic body. The combustor is arranged right above the upper portion barrel body. Two concentric annular air chambers located below the top cover are arranged at the top of the upper portion barrel body. The annular air chamber located inside is the air chamber of secondary air and the annular air chamber located outside is the air chamber of protective air. A secondary air inlet is formed in the bottom of the air chamber of the secondary air and a secondary air inlet pipe is connected with the air chamber of the secondary air. A protective air inlet is formed in the bottom of the air chamber of the protective air and a protective air inlet pipe is connected with the air chamber of the protective air. A cooling air inlet pipe is arranged on the middle lower portion of the upper portion barrel body and a horizontal hot air outlet pipe is arranged on the lower portion of the upper portion barrel body. The hot blast stove is free of coking, high in automation level, high in combustion efficiency, smooth in slag discharge and capable of operating for a long time and offering a favorable guarantee for normal operation of a downstream drying link.
Description
Technical field
The utility model relates to a kind of Thermal Equipment, particularly a kind of hot-blast stove.
Background technology
At the drying field of a lot of adhesional wetting materiels, need a large amount of hot blasts as the oven dry medium, and the source of hot blast need hot-blast stove to produce mostly.Owing to be subjected to the restriction of fuel condition and production cost, the domestic big-and-middle scale hot-blast stove for oven dry of China all uses coal-fired hot-blast stove, have only the lower hot-blast stove of low profile thermal wind furnace or running rate or fuel is had the hot-blast stove of specific (special) requirements, just will consider and use fuel oil or combustion gas as hot-blast stove fuel.The fired coal combustion method mainly contains two kinds, i.e. the suspension combustion method of the layer combustion method of lump coal and coal dust.The general automatization level of the layer combustion of lump coal is not high and efficiency of combustion is on the low side, the hot-blast stove of domestic current coal dust burning mostly is horizontal layout, in use can produce serious coking phenomenon, can not long-time running, the normal operation of downstream oven dry link is brought adverse effect.
Summary of the invention
The utility model provides a kind of hot-blast stove that can coking in service for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of hot-blast stove, comprise burner and body of heater, and described body of heater is vertical setting, comprises interconnective top cylindrical shell and bottom inverted cone; Cylindrical shell top, described top is provided with top cover, and the bottom of described bottom inverted cone is provided with ash discharging hole; Described burner be installed in described top cylindrical shell directly over; The top of described top cylindrical shell is provided with two annular concentric air compartments that are positioned under the described top cover, being positioned at inner described annular air compartment is secondary wind air compartment, be positioned at outside described annular air compartment and be protection wind air compartment, the bottom of described secondary wind air compartment is provided with the secondary wind inlet, is connected with secondary air intake pipe on the described secondary wind air compartment; The bottom of described protection wind air compartment is provided with the protection wind inlet, is connected with protection wind blast pipe on the described protection wind air compartment; The middle and lower part of described top cylindrical shell is provided with the cooling air blast pipe, and the bottom of described top cylindrical shell is provided with horizontal hot-blast outlet pipe.
Described secondary wind inlet is along circumferentially uniform a plurality of, and described protection wind inlet be along circumferential uniform a plurality of.
Described cooling air blast pipe is provided with the first cooling air control valve.
Described cooling air blast pipe ringwise, and through a plurality of edges circumferentially uniform radially cooling air import and the internal communication of described top cylindrical shell.
Described hot-blast outlet pipe is provided with the second cooling air control valve.
The bottom of described top cylindrical shell is equipped with explosion-proof valve.
Use variable-frequency governor on the primary air fan that described burner disposes, and by airduct valve regulated wind ratio.
Described protection wind blast pipe is provided with protection wind control valve.
Described secondary air intake pipe is provided with the secondary air adjustor valve door.
Described body of heater is provided with at least one peep hole.
Advantage and the good effect that the utlity model has are: 1) simple in structure, and processing ease, deslagging is smooth, is difficult for coking; 2) heat capacity can reach 500～5,000 ten thousand kcal/h, and the heat capacity scope is wide; 3) fuel tolerance is wide, can adapt to coal dust, petroleum coke and heavy oil and natural gas, and fuel burn-off rate height can reach more than 99%; 4) the outlet hot blast temperature is adjustable, and hot blast temperature reaches as high as 750 ° of C; 5) fuel combustion thermal efficiency height can reach more than 95%.In sum, the utility model noncoking that is in operation, the automatization level height, the efficiency of combustion height, deslagging is smooth, can long-time running, for the normal operation of downstream oven dry link provides a favorable security.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 1;
Fig. 4 is the B-B cutaway view of Fig. 1.
Among the figure: the 1st, burner, the 2nd, hot-blast stove top cover, the 31st, secondary air intake pipe, the 32nd, secondary wind air compartment; the 33rd, secondary wind inlet, the 41st, protection wind blast pipe, the 42nd, protection wind air compartment; the 43rd, protection wind inlet, the 51st, top cylindrical shell, the 52nd, bottom reverse taper; the 61st, the cooling air blast pipe, the 62nd, the cooling air air compartment, 63 is first cooling air control valves; the 64th, the cooling air import, the 7th, hot-blast outlet pipe, 71 is second cooling air control valves; the 8th, explosion-proof valve, the 9th, ash discharging hole, the 101, the 102nd, peep hole.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1～Fig. 4, a kind of hot-blast stove comprises burner 1 and body of heater, and described body of heater is the formula setting, comprises interconnective top cylindrical shell 51 and bottom inverted cone 52; Cylindrical shell top, described top is provided with top cover 2, and the bottom of described bottom inverted cone 52 is provided with ash discharging hole 9; Described burner 1 be installed in described top cylindrical shell 51 directly over; The top of described top cylindrical shell 51 is provided with two annular concentric air compartments that are positioned under the described top cover 2, being positioned at inner described annular air compartment is secondary wind air compartment 32, be positioned at outside described annular air compartment and be protection wind air compartment 42, the bottom of described secondary wind air compartment 32 is provided with secondary wind inlet 33, is connected with secondary air intake pipe 31 on the described secondary wind air compartment 32; The bottom of described protection wind air compartment 42 is provided with protection wind inlet 43, is connected with protection wind blast pipe 41 on the described protection wind air compartment 42; The middle and lower part of described top cylindrical shell 51 is provided with cooling air blast pipe 61, and the bottom of described top cylindrical shell 51 is provided with horizontal hot-blast outlet pipe 7.
Described secondary wind inlet 33 is along circumferentially uniform a plurality of, and described protection wind inlet 43 be along circumferential uniform a plurality of.Described cooling air blast pipe 61 is provided with the first cooling air control valve 63.In the present embodiment, the first cooling air control valve 63 is power types, can certainly adopt the valve of manual pattern.Described cooling air blast pipe 61 ringwise, and through a plurality of edges the circumferential internal communication of uniform radially cooling air import 64 and described top cylindrical shell 51.Described hot-blast outlet pipe 7 is provided with the second cooling air control valve 71.In the present embodiment, the second cooling air control valve 71 is power types, can certainly adopt the valve of manual pattern.The bottom of described top cylindrical shell 51 is equipped with explosion-proof valve 8.Use variable-frequency governor on the primary air fan that described burner 1 disposes, and by airduct valve regulated wind ratio.Described protection wind blast pipe 41 is provided with protection wind control valve.Described secondary air intake pipe 31 is provided with the secondary air adjustor valve door.Described body of heater is provided with at least one peep hole.In the present embodiment, be provided with peep hole 101 at the top cover of top cylindrical shell 51, be provided with another peep hole 102 on the top of top cylindrical shell 51.
Operation principle of the present utility model:
Supply with a wind that is entered hot-blast stove by burner 1 by the burner primary air fan, can be used to regulate flame profile.The secondary wind that secondary air intake pipe 31 is sent into enters the combustion chamber by several secondary wind inlets 33 again via secondary air chamber 32, utilizes the consumption of the valve regulated secondary wind above the secondary air intake pipe 31, thereby regulates the coal dust firing temperature.The protection wind that protection wind blast pipe 41 is sent into is via protection air compartment 42; enter the combustion chamber by several protection wind inlets 43 along the body of heater top cover again; utilize the valve regulated protection wind air quantity above the protection wind blast pipe, with the temperature of control inboard wall of furnace body, refractory material is safe and practical in the assurance body of heater.Cooling air blast pipe 61 send in the stove cooling air via the cooling air compartment 62, enter the hot-blast stove middle and lower part by several cooling air imports 64 again; Cooling air compartment 62 is provided with two first cooling air control valves 63 and is communicated with atmosphere, can regulate the natural air that enters hot-blast stove as required.The high-temperature flue gas that burning produces; converging limit wall protection wind moves from top to bottom; and carry out heat exchange in the hot-blast furnace body middle and lower part with the sub-cooled wind that enters from cooling air import 64; the hot flue gas that has uniform temperature after the heat exchange is discharged from hot-blast furnace body; enter hot-blast outlet pipe 7 and further be mixed into final hot flue gas with the natural air that enters through the second cooling air control valve 71 then, enter the oven dry link in downstream.
In the utility model; the required air of fuel combustion can divide multiple spot to enter; an existing wind that enters from burner 1; the some groups of secondary wind and the protection wind that enter from top cover 2 are arranged again; can use the wind ratio according to what various wind were regulated on different combustion position rational and orderly ground; both guaranteed the abundant burning of fuel, and guaranteed again not have localized hyperthermia in the hot-blast stove and produce coking phenomenon.The high temperature wind that burning produces can carry out suitable adjustment by cooling air in the stove and the cooling air that enters through the second cooling air control valve 71, guarantee to come out of the stove hot blast required suitable temperature and heat content.Simultaneously, facility such as that hot-blast stove has been considered is explosion-proof, ash discharge and observation has guaranteed the normal use of hot-blast stove.
The secondary wind that the utility model adopts wind providing from the fuel of burner ejection and burner primary air fan and hot-blast stove outside to enter carries out high-temp combustion, with primary air fan FREQUENCY CONTROL flame temperature and case of fire, with air feed valve opening control hot-blast stove master furnace temperature on the secondary air intake pipe, by the hot blast temperature of coming out of the stove of air feed valve opening control hot-blast stove on the cooling air blast pipe, with cold wind valve opening control hot-blast stove ventilation temperature on the hot-blast outlet pipe, according to required heat supply heat content, adjust firing rate.The utility model is the large-scale vertical pulverized coal hot air furnace, the hot blast of required a large amount of heat content requirements can be provided, and the coking technical barrier that can effectively avoid conventional hot-blast stove in combustion process, to produce, fuel burn-off rate height, thermal efficiency height, outlet hot blast temperature and heat content are adjustable, fuel tolerance is wide, both burning coal dusts, also the burning petroleum coke also is adapted to heavy oil and natural gas.
Although by reference to the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (10)
1. a hot-blast stove comprises burner and body of heater, it is characterized in that, described body of heater is vertical setting, comprises interconnective top cylindrical shell and bottom inverted cone; Cylindrical shell top, described top is provided with top cover, and the bottom of described bottom inverted cone is provided with ash discharging hole; Described burner be installed in described top cylindrical shell directly over; The top of described top cylindrical shell is provided with two annular concentric air compartments that are positioned under the described top cover, being positioned at inner described annular air compartment is secondary wind air compartment, be positioned at outside described annular air compartment and be protection wind air compartment, the bottom of described secondary wind air compartment is provided with the secondary wind inlet, is connected with secondary air intake pipe on the described secondary wind air compartment; The bottom of described protection wind air compartment is provided with the protection wind inlet, is connected with protection wind blast pipe on the described protection wind air compartment; The middle and lower part of described top cylindrical shell is provided with the cooling air blast pipe, and the bottom of described top cylindrical shell is provided with horizontal hot-blast outlet pipe.
2. according to the described hot-blast stove of claim 1, it is characterized in that described secondary wind inlet is along circumferentially uniform a plurality of, described protection wind inlet be along circumferential uniform a plurality of.
3. according to the described hot-blast stove of claim 1, it is characterized in that described cooling air blast pipe is provided with the first cooling air control valve.
4. according to claim 1 or 3 described hot-blast stoves, it is characterized in that, described cooling air blast pipe ringwise, and through a plurality of edges circumferentially uniform radially cooling air import and the internal communication of described top cylindrical shell.
5. according to the described hot-blast stove of claim 1, it is characterized in that described hot-blast outlet pipe is provided with the second cooling air control valve.
6. according to the described hot-blast stove of claim 1, it is characterized in that the bottom of described top cylindrical shell is equipped with explosion-proof valve.
7. according to the described hot-blast stove of claim 1, it is characterized in that, use variable-frequency governor on the primary air fan that described burner disposes, and by airduct valve regulated wind ratio.
8. according to the described hot-blast stove of claim 1, it is characterized in that described protection wind blast pipe is provided with protection wind control valve.
9. according to the described hot-blast stove of claim 1, it is characterized in that described secondary air intake pipe is provided with the secondary air adjustor valve door.
10. according to the described hot-blast stove of claim 1, it is characterized in that described body of heater is provided with at least one peep hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220738827 CN203068781U (en) | 2012-12-27 | 2012-12-27 | Hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220738827 CN203068781U (en) | 2012-12-27 | 2012-12-27 | Hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068781U true CN203068781U (en) | 2013-07-17 |
Family
ID=48767560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220738827 Expired - Lifetime CN203068781U (en) | 2012-12-27 | 2012-12-27 | Hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068781U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135418A (en) * | 2015-08-27 | 2015-12-09 | 武汉奥杰科技股份有限公司 | Mixed combustion type vertical hot wind equipment |
| CN106958939A (en) * | 2017-03-22 | 2017-07-18 | 华东理工大学 | A kind of direct-fired adjustable hot-blast stove |
-
2012
- 2012-12-27 CN CN 201220738827 patent/CN203068781U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135418A (en) * | 2015-08-27 | 2015-12-09 | 武汉奥杰科技股份有限公司 | Mixed combustion type vertical hot wind equipment |
| CN106958939A (en) * | 2017-03-22 | 2017-07-18 | 华东理工大学 | A kind of direct-fired adjustable hot-blast stove |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |