CN109028569B - Flue gas full-cycle hot-blast stove - Google Patents
Flue gas full-cycle hot-blast stove Download PDFInfo
- Publication number
- CN109028569B CN109028569B CN201811047341.9A CN201811047341A CN109028569B CN 109028569 B CN109028569 B CN 109028569B CN 201811047341 A CN201811047341 A CN 201811047341A CN 109028569 B CN109028569 B CN 109028569B
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- China
- Prior art keywords
- flue gas
- air
- heat exchanger
- section heat
- communicated
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Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 64
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000000428 dust Substances 0.000 claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000003245 coal Substances 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/067—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2092—Arrangement or mounting of control or safety devices for air heaters using solid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/101—Baghouse type
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The invention relates to a flue gas full-circulation hot blast stove which comprises a combustion furnace, wherein the combustion furnace is communicated with a high-temperature section heat exchanger, an air outlet of the high-temperature section heat exchanger and an air outlet of a low-temperature Duan Huanre device are converged to a hot air outlet, a flue gas outlet of the high-temperature section heat exchanger is communicated with a flue gas inlet of a low-temperature Duan Huanre device, an air inlet of the high-temperature section heat exchanger is communicated with a first air blower, a flue gas outlet at the tail end of the low-temperature Duan Huanre device is communicated with an air preheater, the air preheater is connected with a second air blower and a pulse bag dust collector, the second air blower is communicated with an air inlet of the low-temperature Duan Huanre device, the pulse bag dust collector is communicated with a flue gas induced draft fan, and the flue gas induced draft fan is communicated with the air inlet of the high-temperature section heat exchanger through an electric flap valve. The hot blast stove of the invention directly communicates the flue gas flowing out of the heat exchanger to the air inlet of the heat exchanger after being treated by the pulse bag-type dust collector, thereby realizing the full circulation of the flue gas and avoiding the waste of energy sources.
Description
Technical Field
The invention relates to the field of hot blast stoves, in particular to a flue gas full-cycle hot blast stove.
Background
In the hot blast stove in the prior art, after the flue gas is lifted to a certain temperature by a heat exchanger, the flue gas directly enters a dust remover for treatment, and is directly discharged after treatment, and the temperature of the discharged flue gas is still higher, so that the energy waste is caused.
Disclosure of Invention
The invention aims to provide a flue gas full-cycle hot blast stove, which is used for solving the problem of energy waste caused by direct discharge of flue gas of the hot blast stove in the prior art.
The invention provides a flue gas full-circulation hot blast stove which comprises a combustion furnace, a high-temperature section heat exchanger, a low-temperature Duan Huanre device, an air preheater, a first air blower, a second air blower, a pulse bag dust collector and a flue gas induced draft fan, wherein the tail end of the combustion furnace is communicated with a flue gas inlet of the high-temperature section heat exchanger, an air outlet of the high-temperature section heat exchanger and an air outlet of the low-temperature Duan Huanre device through pipelines to be converged to a hot air outlet, the flue gas outlet of the high-temperature section heat exchanger is communicated with a flue gas inlet of the low-temperature Duan Huanre device, the air inlet of the high-temperature section heat exchanger is communicated with the first air blower, the flue gas outlet of the tail end of the low-temperature Duan Huanre device is communicated with the air preheater, the air preheater is connected with the second air blower and the pulse bag dust collector, the second air blower is communicated with the air inlet of the low-temperature Duan Huanre device, and the flue gas induced draft fan is communicated with the air inlet of the high-temperature section heat exchanger through an electric flap valve.
Further, the combustion furnace comprises a furnace body, a fire grate base, a coal feeding machine and a slag remover, wherein the furnace body is fixed on the fire grate base, a lead conveying belt is arranged in the fire grate base, two ends of the lead conveying belt are sleeved on rotating rollers, the rotating rollers at the front end are connected with a fire grate speed reducer, two sides of the fire grate base are connected with combustion-supporting fans, the front end of the lead conveying belt is connected with the coal feeding machine, the slag remover is connected with the tail end of the lead conveying belt, and an air outlet of the furnace body is communicated with a flue gas inlet of the high-temperature section heat exchanger.
Further, the smoke induced draft fan is communicated with a water film desulfurization dust remover through an electric flap valve II, and the water film desulfurization dust remover is connected with a chimney.
Further, the air inlet end of the air preheater is communicated with an air filter.
Furthermore, a first temperature measuring device is arranged on a communication pipeline between the combustion furnace and the high-temperature section heat exchanger.
Further, a second temperature measuring device is arranged at the hot air outlet.
The technical scheme of the invention has the beneficial effects that:
the hot blast stove of the invention directly communicates the flue gas flowing out of the heat exchanger to the air inlet of the heat exchanger after being treated by the pulse bag dust collector, thereby realizing the full circulation of the flue gas and avoiding the waste of energy sources; meanwhile, the air preheater is arranged, the temperature of the flue gas is further reduced by introducing normal-temperature air, the temperature requirement that the flue gas enters the pulse bag-type dust collector is met, the air with a certain temperature flowing out of the air preheater is communicated to the blower II, and then flows into the heat exchanger, so that energy waste is avoided.
Drawings
FIG. 1 is a schematic diagram of a flue gas full-cycle hot blast stove according to the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
the boiler comprises a 1-combustion furnace, a 2-high temperature section heat exchanger, a 3-low temperature Duan Huanre device, a 4-air preheater, a 5-blower I, a 6-blower II, a 7-pulse bag dust collector, an 8-flue gas induced draft fan, a 9-hot air outlet, a 10-electric flap valve I, a 11-furnace body, a 12-coal feeder, a 13-slag remover, a 14-lead conveyor belt, a 15-fire grate reducer, a 16-combustion fan, a 17-electric flap valve II, a 18-water film desulfurization dust collector, a 19-air filter, a 20-temperature measuring device I, a 21-temperature measuring device II and a 22-chimney.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
As shown in fig. 1, the invention provides a flue gas full-circulation hot blast stove, which comprises a combustion furnace 1, a high-temperature section heat exchanger 2, a low-temperature Duan Huanre device 3, an air preheater 4, a first blower 5, a second blower 6, a pulse cloth bag dust collector 7 and a flue gas induced draft fan 8, wherein the tail end of the combustion furnace 1 is communicated with a flue gas inlet of the high-temperature section heat exchanger 2 through a pipeline, an air outlet of the high-temperature section heat exchanger 2 and an air outlet of the low-temperature Duan Huanre device 3 are converged to a hot air outlet 9, the flue gas outlet of the high-temperature section heat exchanger 2 is communicated with a flue gas inlet of the low-temperature Duan Huanre device 3, the air inlet of the high-temperature section heat exchanger 2 is communicated with the first blower 5, the flue gas outlet of the tail end of the low-temperature Duan Huanre device 3 is communicated with the air preheater 4, the second blower 6 is connected with the pulse cloth bag dust collector 7, the second blower 6 is communicated with an air inlet of the low-temperature Duan Huanre device 3, the pulse cloth bag dust collector 7 is communicated with the flue gas 8, and the induced draft fan 8 is communicated with an air inlet of the high-temperature section heat exchanger 2 through an electric flap valve 10. In the embodiment, the flue gas generated by the combustion furnace 1 enters the high-temperature section heat exchanger 2 through the flue gas inlet of the high-temperature section heat exchanger 2, then enters the low-temperature Duan Huanre device 3 through the flue gas inlet of the low-temperature Duan Huanre device 3, the flue gas outlet of the low-temperature Duan Huanre device 3 is communicated with the air preheater 4, the normal-temperature air flows through the air preheater 4 and is directly recycled to the blower second 6, the temperature of the flue gas flowing out of the air preheater 4 is greatly reduced, the temperature requirement of the flue gas entering the pulse bag dust collector 7 is met, the flue gas is processed by the pulse bag dust collector 7 and then is introduced into the high-temperature section heat exchanger 2 through the flue gas induced draft fan 8, meanwhile, the air inlet of the high-temperature section heat exchanger 2 is blown in real time through the blower first 5, the air inlet of the low-temperature Duan Huanre device 3 is blown in real time through the blower second 6, the normal-temperature air and the low-temperature flue gas flowing through the high-temperature section heat exchanger 2 and the air flowing through the low-temperature Duan Huanre device 3 finally flow out through the hot air outlet 9 for users.
The combustion furnace 1 comprises a furnace body 11, a fire grate base (not marked in the figure), a coal feeding machine 12 and a slag remover 13, wherein the furnace body 11 is fixed on the fire grate base, a lead conveying belt 14 is arranged in the fire grate base, two ends of the lead conveying belt 14 are sleeved on rotating rollers, the rotating rollers at the front end are connected with a fire grate reducer 15, two sides of the fire grate base are connected with combustion-supporting fans 16, the front end of the lead conveying belt 14 is connected with the coal feeding machine 12, the tail end of the lead conveying belt is connected with the slag remover 13, and an air outlet of the furnace body 11 is communicated with a flue gas inlet of the high-temperature section heat exchanger 2.
The flue gas induced draft fan 8 is communicated with the water film desulfurization dust remover 18 through the electric flap valve II 17, the water film desulfurization dust remover 18 is connected with a chimney, the electric flap valve II 17 or the electric flap valve I10 can be selectively opened according to requirements, the electric flap valve I10 is closed for the condition that the cleanliness requirement on hot air is very high, the electric flap valve II 17 is opened for the condition that the cleanliness requirement on hot air is not very high, the electric flap valve II 17 is selectively closed, and the electric flap valve I10 is opened for realizing the full circulation of flue gas, so that the application range of the hot blast stove is improved.
The air inlet end of the air preheater 4 is communicated with an air filter 19 for removing dust from the air.
A first temperature measuring device 20 is arranged on a communicating pipeline between the combustion furnace 1 and the high-temperature section heat exchanger 2 and used for detecting the temperature of flue gas flowing out of the combustion furnace 1 in real time, and a second temperature measuring device 21 is arranged at the hot air outlet 9 and used for detecting the temperature of hot air at the hot air outlet 9 in real time.
In conclusion, the hot blast stove of the invention directly communicates the flue gas flowing out of the heat exchanger to the air inlet of the heat exchanger after being treated by the pulse bag-type dust collector, thereby realizing the full circulation of the flue gas and avoiding the waste of energy sources; meanwhile, the air preheater is arranged, the temperature of the flue gas is further reduced by introducing normal-temperature air, the temperature requirement that the flue gas enters the pulse bag-type dust collector is met, the air with a certain temperature flowing out of the air preheater is communicated to the blower II, and then flows into the heat exchanger, so that energy waste is avoided.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. The utility model provides a flue gas full cycle hot-blast furnace which is characterized in that, including combustion furnace, high temperature section heat exchanger, low temperature Duan Huanre ware, air heater, air-blower one, air-blower two, pulse bag dust remover, flue gas draught fan, the combustion furnace tail end is through the flue gas import of pipeline intercommunication high temperature section heat exchanger, the air outlet of high temperature section heat exchanger and the air outlet of low temperature Duan Huanre ware meet to hot-blast exit, the flue gas export of high temperature section heat exchanger is through the flue gas import of low temperature Duan Huanre ware, the air inlet of high temperature section heat exchanger is through air-blower one, the flue gas export of the tail end of low temperature Duan Huanre ware is through air-heater, air-heater connects air-blower two and pulse bag dust remover, air-blower two is through the air inlet of low temperature Duan Huanre ware, pulse bag dust remover is through the air-blower one intercommunication high temperature section heat exchanger's air inlet; the combustion furnace comprises a furnace body, a fire grate base, a coal feeding machine and a slag remover, wherein the furnace body is fixed on the fire grate base, a lead conveying belt is arranged in the fire grate base, two ends of the lead conveying belt are sleeved on rotating rollers, the rotating rollers at the front end are connected with a fire grate speed reducer, two sides of the fire grate base are connected with combustion-supporting fans, the front end of the lead conveying belt is connected with the coal feeding machine, the tail end of the lead conveying belt is connected with the slag remover, and an air outlet of the furnace body is communicated with a flue gas inlet of a high-temperature section heat exchanger; the smoke induced draft fan is communicated with a water film desulfurization dust remover through an electric flap valve II, and the water film desulfurization dust remover is connected with a chimney.
2. The flue gas full cycle hot blast stove according to claim 1, wherein the air inlet end of said air preheater is in communication with an air filter.
3. The flue gas full-cycle hot blast stove according to claim 1, wherein a first temperature measuring device is arranged on a communication pipeline between the combustion furnace and the high-temperature section heat exchanger.
4. The flue gas full-cycle hot blast stove according to claim 1, wherein a second temperature measuring device is arranged at the hot blast outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047341.9A CN109028569B (en) | 2018-09-09 | 2018-09-09 | Flue gas full-cycle hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047341.9A CN109028569B (en) | 2018-09-09 | 2018-09-09 | Flue gas full-cycle hot-blast stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109028569A CN109028569A (en) | 2018-12-18 |
| CN109028569B true CN109028569B (en) | 2024-01-05 |
Family
ID=64620835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811047341.9A Active CN109028569B (en) | 2018-09-09 | 2018-09-09 | Flue gas full-cycle hot-blast stove |
Country Status (1)
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|---|---|
| CN (1) | CN109028569B (en) |
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