CN204114926U - Coal dust firing heating furnace - Google Patents
Coal dust firing heating furnace Download PDFInfo
- Publication number
- CN204114926U CN204114926U CN201420512550.7U CN201420512550U CN204114926U CN 204114926 U CN204114926 U CN 204114926U CN 201420512550 U CN201420512550 U CN 201420512550U CN 204114926 U CN204114926 U CN 204114926U
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- China
- Prior art keywords
- furnace shell
- main furnace
- coal dust
- dust firing
- described main
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The utility model provides a kind of coal dust firing heating furnace, and described coal dust firing heating furnace comprises: the main furnace shell with inner chamber; Coal burner, is arranged on described main furnace shell; Combustion zone, to be arranged in the inner chamber of described main furnace shell and to connect coal burner; Mixed once district, being arranged in the inner chamber of described main furnace shell and connecting described combustion zone, described combustion zone is between described coal burner and described mixed once district; Secondary mixed zone, to be arranged on outside described main furnace shell and to be communicated with described mixed once district; Useless smoke air inlet, to be opened on described main furnace shell and to be connected with described mixed once district; Dry flue gas exports, and to be arranged on outside described main furnace shell and to be communicated with described secondary mixed zone.The utility model have coal dust firing fully, inner flue gas of the stove mixes, exiting flue gas oxygen content is low, can realize the technical advantages such as automatic discharge, furnace thermal efficiency is high, heat loss is few.
Description
Technical field
The utility model relates to a kind of coal dust firing heating furnace.
Background technology
The most drying equipment in current coal powder injection workshop all adopts the heating furnace of burning blast furnace gas, drying medium is formed after the useless flue gas of high-temperature flue gas mixing mainly utilizing burning blast furnace gas to produce, the temperature of drying medium is mainly through controlling the useless flue gas amount of being blended into or heating furnace gas-fired amount regulates, and the drying medium entering grinding machine should control in 250 ~ 350 DEG C.Along with the development in market, occur that some regions, enterprise's powder process workshop do not have the gaseous fuels such as blast furnace gas, the situations such as far in non-blast furnace companies, dust process enterprise or non-ferrous metal metallurgy enterprise etc., powder process following distance source of the gas fuel supply point or source of the gas fuel quantity is not enough.
In sum, there is following problem in prior art: when there is no blast furnace gas, the dry flue gas needed for enterprise cannot normally be produced,
Utility model content
The utility model provides a kind of coal dust firing heating furnace, to solve when there is no blast furnace gas, and the problem of the dry flue gas needed for enterprise cannot normally be produced.
For this reason, the utility model proposes a kind of coal dust firing heating furnace, described coal dust firing heating furnace comprises:
There is the main furnace shell of inner chamber;
Coal burner, is arranged on described main furnace shell;
Combustion zone, to be arranged in the inner chamber of described main furnace shell and to connect coal burner;
Mixed once district, being arranged in the inner chamber of described main furnace shell and connecting described combustion zone, described combustion zone is between described coal burner and described mixed once district;
Secondary mixed zone, to be arranged on outside described main furnace shell and to be communicated with described mixed once district;
Useless smoke air inlet, to be opened on described main furnace shell and to be connected with described mixed once district;
Dry flue gas exports, and to be arranged on outside described main furnace shell and to be communicated with described secondary mixed zone.
Further, described coal dust firing heating furnace also comprises: be arranged on bottom described mixed once district with described secondary mixed zone bottom residue extraction mechanism.
Further, described residue extraction mechanism is conveying worm.
Further, described main furnace shell and described secondary mixed zone are cylindrical, and described secondary mixed zone is arranged on the outside of described main furnace shell, and the volume of described secondary mixed zone is less than described mixed once district.
Further, described coal burner is arranged on the top of described main furnace shell, and described useless smoke air inlet is opened in the side direction of described main furnace shell, and described dry flue gas outlet is positioned at the top of described secondary mixed zone.
Further, the short transverse along described main furnace shell is provided with the stove internal channel that multilayer runs through the sidewall of described main furnace shell, and described stove internal channel is communicated with described useless smoke air inlet and described mixed once district.
Further, the through hole that every layer of stove internal channel circumference of comprising the sidewall of multiple and described main furnace shell is crossing.
Further, the angle of each through hole and horizontal plane is 0 to 45 °.
Further, described coal dust firing heating furnace also comprises: interlayer, be arranged on the outside in described mixed once district and be communicated with described useless smoke air inlet, form the cavity holding flue gas between the sidewall of described interlayer and described main furnace shell, the height of described interlayer is more than or equal to the height in described mixed once district.
Further, described interlayer comprises: be arranged on the left side interlayer on the left of described main furnace shell, with the right side interlayer be arranged on the right side of described main furnace shell, described useless smoke air inlet is positioned at the left side of described left side interlayer and is connected with described left side interlayer, and described secondary mixed zone is positioned at the right side of right side interlayer and is connected with described right side interlayer.
The utility model produces high-temperature flue gas by coal burner combusting coal fines, in stove by the high-temperature flue gas of generation with another part low temperature give up flue gas mixing, forming the mixed flue gas of about 200 ~ 600 DEG C, is coal powder injection workshop or the dry source of the gas that needs the workshop of drying medium to provide reliable and stable.Solve like this enterprise can only with coal dust the problems such as other tolerance such as far or blast furnace coal is not enough as other source of the gas such as combustion medium, blast furnace gas, thus the dry flue gas amount needed when ensureing explained hereafter.
Coal dust firing heating furnace of the present utility model, compared with traditional heating furnace, has following effect:
1) adopt spiral coal powder burner, coal dust firing is abundant.
2) high-temperature flue gas circulate into useless flue gas through twice mixing, mixed effect is better, and mixed flue gas temperature is more stable
3) the airtight burning of coal dust firing heating furnace, relatively other pulverized coal combustion system, exiting flue gas oxygen content is low, adds the security that pulverized coal preparation system is produced.
4) screw conveyor is set bottom coal dust firing heating furnace, can automatic discharge be realized.
5) coal dust firing heating furnace body of heater adopts double-deck bricking to protect, and heat loss is few.
Accompanying drawing explanation
Fig. 1 sectional structure shows the main TV structure signal of coal dust firing heating furnace of the present utility model;
The A-A sectional structure of Fig. 2 Fig. 1, wherein eliminates conveying worm;
Fig. 3 is the first structure of stove internal channel of the present utility model;
Fig. 4 is the second structure of stove internal channel of the present utility model.
Drawing reference numeral illustrates:
1. coal burner; 2. stove internal channel; 3. useless smoke air inlet; 4. mixed once district; 5. mixed once district falls cinder notch; 6. conveying worm; 7. interface channel; 8. two mixed zones; 9. two mixed zones fall cinder notch; 10. dry flue gas outlet; 11. slag-drip openings; 12. manual firing holes; 13. glory holes; 14. combustion zones; 15. inner lining of furnace; The main furnace shell of 16. interlayer 20
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and the utility model is described.
As shown in Figure 1, comprise according to the coal dust firing heating furnace of the utility model embodiment:
There is the main furnace shell 20 of inner chamber;
Coal burner 1, is arranged on described main furnace shell 20, and preferably, adopt spiral coal powder burner, coal dust firing is abundant;
Combustion zone 14, being arranged in the inner chamber of described main furnace shell and connecting coal burner 1, the coal dust of coal burner 1 carries out Thorough combustion in combustion zone 14;
Mixed once district 4, being arranged in the inner chamber of described main furnace shell and connecting described combustion zone 14, described combustion zone 14 is between described coal burner 1 and described mixed once district 4;
Secondary mixed zone 8, to be arranged on outside described main furnace shell 20 and to be communicated with described mixed once district 4;
Useless smoke air inlet 3, to be opened on described main furnace shell 20 and to be connected with described mixed once district 4, the low temperature flue gas that gives up enters mixed once district 4 by the smoke air inlet 3 that gives up, and the high-temperature flue gas produced in combustion zone 14 and the low temperature entered in the stove flue gas that gives up carries out first in mixed once district 4 and mixes;
Dry flue gas outlet 10, being arranged on outside described main furnace shell 20 and being communicated with described secondary mixed zone 8, the flue gas after mixed once mixes again in secondary mixed zone 8, and mixed flue gas is discharged from dry flue gas outlet 10.
The utility model produces high-temperature flue gas by coal burner combusting coal fines, in main furnace shell 20 by the high-temperature flue gas of generation with another part low temperature give up flue gas mixing, forming the mixed flue gas of about 200 ~ 600 DEG C, is coal powder injection workshop or the dry source of the gas that needs the workshop of drying medium to provide reliable and stable.Solve like this enterprise can only with coal dust the problems such as other tolerance such as far or blast furnace coal is not enough as other source of the gas such as combustion medium, blast furnace gas, thus the dry flue gas amount needed when ensureing explained hereafter.
Further, described coal dust firing heating furnace also comprises: be arranged on bottom described mixed once district with described secondary mixed zone bottom residue extraction mechanism, can automatic discharge be realized.Coal dust firing heating furnace, owing to adopting coal dust as fuel, can produce lime-ash after burnup,
Therefore, relative to the heating furnace of burning blast furnace gas, the utility model adds residue extraction mechanism, to realize the timely cleaning of lime-ash.Further, as shown in Figure 1, described residue extraction mechanism is conveying worm 6.The lime-ash precipitated in the mixed once district 4 mixed once district be deposited in bottom mixed once district falls cinder notch 5 place, and the lime-ash precipitated in the secondary mixed zone 8 secondary mixed zone be deposited in bottom secondary mixed zone falls cinder notch 9.Conveying worm 6 be horizontally set on bottom mixed once district with described secondary mixed zone bottom, by a conveying worm 6, can discharge bottom mixed once district with described secondary mixed zone bottom lime-ash.Mixed once district the fall level height of cinder notch 9 of cinder notch 5 and secondary mixed zone that falls is identical, and fall in mixed once district cinder notch 5 and the secondary mixed zone lime-ash piled up in cinder notch 9 that falls is discharged to stove from slag-drip opening 11 by conveying worm 6.
Further, as Fig. 1 and Fig. 2, described main furnace shell 20 is cylindrical with described secondary mixed zone 8, and mixed once district 4 is communicated with by interface channel 7 with described secondary mixed zone 8, and interface channel 7 runs through the right side wall of main furnace shell 20.Mixed once district 4 is also cylindrical region, described secondary mixed zone 8 is arranged on the outside of described main furnace shell 20, the volume of described secondary mixed zone 8 is less than described mixed once district 4, such as, the diameter of secondary mixed zone 8 and be highly all less than described mixed once district 4, mixes to realize the effective secondary of high-temperature flue gas and low-temperature flue gas.
Further, as Fig. 1, described coal burner 1 is arranged on the top of described main furnace shell, burner or nozzle are arranged in the inner chamber of main furnace shell, the airtight burning of coal dust firing heating furnace, relatively other pulverized coal combustion system, exiting flue gas oxygen content is low, adds the security that pulverized coal preparation system is produced.Described useless smoke air inlet 3 is opened in the side direction of described main furnace shell, and described dry flue gas outlet 10 is positioned at the top of described secondary mixed zone 8.Like this, the trend of high-temperature flue gas and the trend of low-temperature flue gas are convenient to realize successively mixing for twice.In addition, the side direction of main furnace shell can also be provided with manual firing hole 12 and glory hole 13.Arrange inner lining of furnace 15 in coal dust firing heating furnace, the inwall of main furnace shell is provided with inner lining of furnace 15 in other words, plays fire prevention, heat insulation effect, reduces the heat loss in stove.
Further, as Fig. 1, be provided with in stove that multilayer runs through the sidewall of described main furnace shell logical along the short transverse of described main furnace shell, 2, described stove internal channel is communicated with described useless smoke air inlet 3 and described mixed once district 4, to realize first time mixing.
Further, as Fig. 3 and Fig. 4, the through hole that the circumference that every layer of stove internal channel 2 comprises the sidewall of multiple and described main furnace shell is crossing, each through hole is uniformly distributed, to realize being communicated with described useless smoke air inlet 3 and described mixed once district 4.As Fig. 4, stove internal channel 2 comprises multiple through hole being arranged on main furnace shell radial direction, to reach the object of rapid mixing.As Fig. 3, the through hole that stove internal channel 2 is arranged for non-static fields, this set, make low-temperature flue gas produce eddy flow in main furnace shell, mixing ratio is more abundant.
Further, as Fig. 1 and Fig. 2, described coal dust firing heating furnace also comprises: interlayer 16, be arranged on the outside in described mixed once district 4 and be communicated with described useless smoke air inlet 3, form the cavity holding flue gas between the sidewall of described interlayer 16 and described main furnace shell, the height of described interlayer 16 is more than or equal to the height in described mixed once district 4.
Further, as Fig. 1 and Fig. 2, described interlayer comprises: the right side interlayer 162 being arranged on the left side interlayer 161 on the left of described main furnace shell and being arranged on the right side of described main furnace shell, left side interlayer is communicated with right side interlayer, form the whole interlayer of an annular, described useless smoke air inlet 3 is positioned at the left side of described left side interlayer and is connected with described left side interlayer 161, and described secondary mixed zone 8 is positioned at the right side of right side interlayer and is connected with described right side interlayer 162.
As shown in Figure 1, the low temperature entered by useless smoke air inlet 3 flue gas that gives up directly can enter the left side interlayer 161 of interlayer 16, and enters mixed once district 4 by stove internal channel 2.The high-temperature flue gas and the low temperature entered in stove that produce in combustion zone 14 flue gas that gives up carries out first in mixed once district 4 and mixes, and in formation Fig. 1, the mixed path that the dotted line in mixed once district 4 represents, this mixed path is spirality, embodies good mixing.Flue gas after mixed once is after stove internal channel 2, again mix in secondary mixed zone 8 with the flue gas that gives up from the part low temperature in the right side interlayer 162 of interlayer 16, define the mixed path that the dotted line in Fig. 1 in secondary mixed zone 8 represents, mixed flue gas is discharged from dry flue gas outlet 10, such mixed effect is relatively more abundant, and mixed flue gas temperature is more stable.
The utility model have coal dust firing fully, inner flue gas of the stove mixes, exiting flue gas oxygen content is low, can realize the technical advantages such as automatic discharge, furnace thermal efficiency is high, heat loss is few.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.For each part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (10)
1. a coal dust firing heating furnace, is characterized in that, described coal dust firing heating furnace comprises:
There is the main furnace shell of inner chamber;
Coal burner, is arranged on described main furnace shell;
Combustion zone, to be arranged in the inner chamber of described main furnace shell and to connect coal burner;
Mixed once district, being arranged in the inner chamber of described main furnace shell and connecting described combustion zone, described combustion zone is between described coal burner and described mixed once district;
Secondary mixed zone, to be arranged on outside described main furnace shell and to be communicated with described mixed once district;
Useless smoke air inlet, to be opened on described main furnace shell and to be connected with described mixed once district;
Dry flue gas exports, and to be arranged on outside described main furnace shell and to be communicated with described secondary mixed zone.
2. coal dust firing heating furnace as claimed in claim 1, it is characterized in that, described coal dust firing heating furnace also comprises: be arranged on bottom described mixed once district with described secondary mixed zone bottom residue extraction mechanism.
3. coal dust firing heating furnace as claimed in claim 2, it is characterized in that, described residue extraction mechanism is conveying worm.
4. coal dust firing heating furnace as claimed in claim 1, it is characterized in that, described main furnace shell and described secondary mixed zone are cylindrical, and described secondary mixed zone is arranged on the outside of described main furnace shell, and the volume of described secondary mixed zone is less than described mixed once district.
5. coal dust firing heating furnace as claimed in claim 1, it is characterized in that, described coal burner is arranged on the top of described main furnace shell, and described useless smoke air inlet is opened in the side direction of described main furnace shell, and described dry flue gas outlet is positioned at the top of described secondary mixed zone.
6. coal dust firing heating furnace as claimed in claim 1, it is characterized in that, short transverse along described main furnace shell is provided with the stove internal channel that multilayer runs through the sidewall of described main furnace shell, and described stove internal channel is communicated with described useless smoke air inlet and described mixed once district.
7. coal dust firing heating furnace as claimed in claim 6, is characterized in that, the through hole that the circumference that every layer of stove internal channel comprises the sidewall of multiple and described main furnace shell is crossing.
8. coal dust firing heating furnace as claimed in claim 7, it is characterized in that, the angle of each through hole and horizontal plane is 0 to 45 °.
9. coal dust firing heating furnace as claimed in claim 1, it is characterized in that, described coal dust firing heating furnace also comprises: interlayer, be arranged on the outside in described mixed once district and be communicated with described useless smoke air inlet, form the cavity holding flue gas between the sidewall of described interlayer and described main furnace shell, the height of described interlayer is more than or equal to the height in described mixed once district.
10. coal dust firing heating furnace as claimed in claim 9, it is characterized in that, described interlayer comprises: be arranged on the left side interlayer on the left of described main furnace shell, with the right side interlayer be arranged on the right side of described main furnace shell, described useless smoke air inlet is positioned at the left side of described left side interlayer and is connected with described left side interlayer, and described secondary mixed zone is positioned at the right side of right side interlayer and is connected with described right side interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512550.7U CN204114926U (en) | 2014-09-05 | 2014-09-05 | Coal dust firing heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512550.7U CN204114926U (en) | 2014-09-05 | 2014-09-05 | Coal dust firing heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114926U true CN204114926U (en) | 2015-01-21 |
Family
ID=52332232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420512550.7U Withdrawn - After Issue CN204114926U (en) | 2014-09-05 | 2014-09-05 | Coal dust firing heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN204114926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197320A (en) * | 2014-09-05 | 2014-12-10 | 中冶京诚工程技术有限公司 | Pulverized coal combustion and warming furnace |
-
2014
- 2014-09-05 CN CN201420512550.7U patent/CN204114926U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197320A (en) * | 2014-09-05 | 2014-12-10 | 中冶京诚工程技术有限公司 | Pulverized coal combustion and warming furnace |
| CN104197320B (en) * | 2014-09-05 | 2016-08-24 | 中冶京诚工程技术有限公司 | Coal dust firing heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |