CN117419575A - High-temperature high-pressure glass kiln waste heat boiler with afterburning - Google Patents
High-temperature high-pressure glass kiln waste heat boiler with afterburning Download PDFInfo
- Publication number
- CN117419575A CN117419575A CN202311234794.3A CN202311234794A CN117419575A CN 117419575 A CN117419575 A CN 117419575A CN 202311234794 A CN202311234794 A CN 202311234794A CN 117419575 A CN117419575 A CN 117419575A
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- Prior art keywords
- flue
- temperature
- glass kiln
- heat boiler
- steam
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- 239000011521 glass Substances 0.000 title claims abstract description 48
- 239000002918 waste heat Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 230000008676 import Effects 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 15
- 239000003546 flue gas Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 239000003245 coal Substances 0.000 description 7
- 238000002309 gasification Methods 0.000 description 7
- 238000010248 power generation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1838—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations
- F22B1/1846—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/07—Glass
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
High temperature high pressure glass kiln exhaust-heat boiler with afterburning. At present, the domestic glass kiln waste heat boiler is limited by the temperature of low-quality waste gas discharged by a glass kiln, the waste gas is below 500 ℃, and the parameters of the glass kiln waste heat boiler unit are the highest to be the secondary high-pressure unit due to the fact that the waste gas temperature is 500 ℃. The invention comprises the following steps: the glass kiln comprises a glass kiln (1), a circulating flue, an overheat flue and a steam drum (20), wherein the circulating flue comprises a first flue (3), a second flue (10), a third flue (12) and a fourth flue (15), and the first flue, the second flue, the third flue and the fourth flue form a snake-shaped flue together; the burner (5) is arranged on the overheat flue, the high-temperature superheater (6) and the medium-temperature superheater (7) are arranged in the overheat flue, and the end part of the overheat flue is communicated to the first flue; an SCR denitration device (11) is fixed in the second flue. The invention is used for the glass kiln waste heat generator set.
Description
Technical Field
The invention relates to a high-temperature high-pressure glass kiln waste heat boiler with afterburning.
Background
The waste heat power generation of the glass kiln is to utilize low-temperature low-quality waste gas discharged from the tail part of a production line of the glass kiln to generate superheated steam with certain pressure through a waste heat boiler so as to drive a steam turbine to generate power. At present, the domestic glass kiln waste heat boiler is limited by the temperature of low-quality waste gas discharged by a glass kiln, the waste gas is below 500 ℃, the parameters of the glass kiln waste heat boiler set are the highest, the secondary high-pressure set is achieved, the pressure of main steam is only 6.27MPa, and the temperature of main steam is only 485 ℃. How to improve the boiler efficiency, this patent provides a high temperature high pressure glass kiln waste heat furnace of area afterburning.
Disclosure of Invention
The invention aims to solve the problems and provide the high-temperature and high-pressure glass kiln waste heat boiler with afterburning.
The above object is achieved by the following technical scheme:
the high-temperature high-pressure glass kiln waste heat boiler with the afterburning function comprises a glass kiln, a circulating flue, an overheating flue and a steam drum, wherein the circulating flue comprises a first flue, a second flue, a third flue and a fourth flue, and the first flue, the second flue, the third flue and the fourth flue form a serpentine flue together;
the burner is arranged on the overheat flue, the high-temperature superheater and the medium-temperature superheater are arranged in the overheat flue, and the end part of the overheat flue is communicated to the first flue;
and an SCR denitration device is fixed in the second flue.
The high-temperature high-pressure glass kiln waste heat boiler with the afterburning function is characterized in that an economizer of the fourth flue and an economizer of the third flue are communicated with a water supply pipeline, an outlet pipeline of the economizer is communicated with the steam drum, a descending pipe of the steam drum is communicated with an evaporator of the first flue and an evaporator of the third flue, a saturated steam eduction pipe of the steam drum is communicated with a low-temperature superheater, a superheated steam outlet of the low-temperature superheater is communicated with an inlet of a medium-temperature superheater through a first connecting pipeline, and a superheated steam outlet of the medium-temperature superheater is communicated with a high-temperature superheater through a second connecting pipeline.
The main steam pipeline of the steam drum is communicated with the air inlet of the steam turbine.
The high-temperature high-pressure glass kiln waste heat boiler with the afterburning function is characterized in that a low-temperature superheater and a first evaporator are arranged in the first flue.
The exhaust-heat boiler of the high-temperature high-pressure glass kiln with the afterburning function is characterized in that a third evaporator and a third economizer are arranged in the third flue.
The waste heat boiler of the high-temperature high-pressure glass kiln with the afterburning function is characterized in that a fourth economizer is arranged in the fourth flue.
Advantageous effects
1. The invention burns gasified gas to carry out afterburning to generate 1200 ℃ flue gas heating medium-temperature and high-temperature superheaters, so that the steam parameters of the waste heat boiler can be increased from 6.27MPa to 485 ℃ to 9.8MPa to 545 ℃, the flue gas after gasified gas burning releases heat to the superheaters, the flue gas temperature is reduced to 600 ℃ and then is mixed with the waste gas from the glass kiln to be about 500 ℃, the low-temperature superheaters, the evaporator, the economizer and the like are sequentially heated after mixing, and the flue gas temperature is reduced to about 180 ℃. Due to the increase in steam temperature, turbine efficiency may be increased, thereby increasing the efficiency of the overall power plant.
2. According to the invention, the main steam parameters of the traditional glass kiln waste heat power generation boiler are increased from original main steam pressure to only.27 MPa, main steam temperature to only 485 ℃ and main steam pressure to 9.8MPa, main steam temperature to 545 ℃ and heat efficiency of the whole unit to about 2.1%, so that the energy-saving and consumption-reducing effects are obvious, and the glass kiln waste heat power generation boiler can be widely applied to glass kiln waste heat power generation units.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: 1. a glass kiln; 2. glass kiln waste gas outlet flue; 3. a first flue; 4. gasifying gas; 5. a burner; 6. a high temperature superheater; 7. a medium temperature superheater; 8. a low temperature superheater; 9. a first evaporator; 10. a second flue; 11. an SCR denitration device; 12. a third flue; 13. a third evaporator; 14. a third economizer; 15. a fourth flue; 16. a fourth economizer; 17. an outlet flue; 18. a water supply pipe; 19. an economizer outlet conduit; 20. a steam drum; 21. a down pipe; 22. a saturated steam eduction tube; 23. a first connecting pipe; 24. a second connecting pipe; 25. a main steam pipeline.
Detailed Description
The high-temperature high-pressure glass kiln waste heat boiler with afterburning comprises a glass kiln 1, a circulating flue, an overheating flue and a steam drum 20, wherein the circulating flue comprises a first flue 3, a second flue 10, a third flue 12 and a fourth flue 15, and the first flue, the second flue, the third flue and the fourth flue form a snake-shaped flue together;
the burner 5 is arranged on the overheat flue, the high-temperature superheater 6 and the medium-temperature superheater 7 are arranged in the overheat flue, and the end part of the overheat flue is communicated to the first flue;
and an SCR denitration device 11 is fixed in the second flue.
The high-temperature high-pressure glass kiln waste heat boiler with the afterburning function is characterized in that an economizer of a fourth flue and an economizer of a third flue are communicated with a water supply pipeline 18, an economizer outlet pipeline 19 is communicated with a steam drum, a descending pipe 21 of the steam drum is communicated with an evaporator of the first flue and an evaporator of the third flue, a saturated steam eduction pipe 22 of the steam drum is communicated with a low-temperature superheater 8, a superheated steam outlet of the low-temperature superheater is communicated with an inlet of a medium-temperature superheater through a first connecting pipeline 23, and a superheated steam outlet of the medium-temperature superheater is communicated with a high-temperature superheater through a second connecting pipeline 24.
The main steam pipeline 25 of the steam drum is communicated with the air inlet of the steam turbine.
The low-temperature superheater 8 and the first evaporator 9 are arranged in the first flue.
The third evaporator 13 and the third economizer 14 are arranged in the third flue.
The waste heat boiler of the high-temperature high-pressure glass kiln with afterburning is characterized in that a fourth economizer 16 is arranged in the fourth flue.
The temperature of the waste gas from the outlet of the glass kiln 1 is about 500 ℃, the waste gas is burnt gas, the components of the waste gas are mainly N2, CO2 and H2O, and the NOx content in the waste gas from the outlet of the glass kiln is high and can reach 3000mg/Nm3. The coal gasification gas 4 is combusted by mixing air through a combustor 5 to generate 1200 ℃ high-temperature flue gas, the high-temperature superheater and the medium-temperature superheater are subjected to heat exchange in a superheating flue, the temperature of the flue gas is reduced to about 600 ℃, the flue gas is mixed with the waste gas in a glass kiln waste gas outlet flue 2 at an inlet in a first flue 3, the temperature after the flue gas temperature is mixed is about 520 ℃, the temperature of the waste gas is continuously exchanged to the low-temperature superheater 8 of the first flue and the first evaporator 9 for heat exchange, the temperature of the waste gas is reduced to about 370 ℃, the waste gas enters a second flue 10, in order to reduce NOx and reach emission indexes, an SCR denitration device 11 is arranged in the second flue, then the waste gas enters a third evaporator 13 and a third economizer 14 in a third flue 12 for continuously exchanging heat to a working medium, the waste gas enters a fourth flue 15 for continuously exchanging heat to the fourth economizer 16 in the fourth flue, the temperature of the waste gas is reduced to about 190 ℃, and the waste gas is discharged into tail dust removing, desulfurizing and other devices through an outlet flue 17.
The temperature of the water supply is 104 ℃, the water supply enters the fourth economizer 16 of the fourth flue 15 through the water supply pipeline 18 to absorb heat, then enters the third economizer 14 of the third flue 12 to absorb heat, then enters the steam drum 20 through the economizer outlet pipeline 19, the saturated steam in the steam drum enters the first evaporator 9 of the first flue and the third evaporator 13 of the third flue respectively to absorb heat after entering the descending pipe 21, the steam-water mixture enters the steam drum 20, saturated steam enters the low-temperature superheater 8 through the saturated steam eduction pipe 22 to absorb heat further, the superheated steam at the outlet of the low-temperature superheater is heated to about 400 ℃ and then enters the medium-temperature superheater through the first connecting pipe 23 to absorb heat of high-temperature flue gas further, the superheated steam is heated to 480 ℃ and then enters the high-temperature superheater through the second connecting pipe 24 to absorb heat of the flue gas generated by coal gasification gas combustion further, and the superheated steam is conveyed to the steam turbine through the main pipeline 25 to generate electricity after being heated to 545 ℃.
The redundant coal gasification gas in the park is utilized, the main components of the coal gasification gas are mainly H2, CH4, CO2 and the like, the coal gasification gas belongs to combustible gas, and the heat value is low. The middle temperature and high temperature superheaters of the boiler are separately provided with a flue, a gas burner is arranged, after burning coal gasification gas is post-burned to generate 1200 ℃ flue gas to heat the middle temperature and high temperature superheaters, so that the steam parameters of the waste heat boiler can be increased to 9.8MPa and 545 ℃ from 6.27MPa, after the flue gas after burning coal gasification gas releases heat to the superheaters, the flue gas temperature is reduced to 600 ℃, the flue gas is mixed with waste gas from a glass kiln to be about 500 ℃, the low temperature superheaters, the evaporator, the economizer and the like are sequentially heated after mixing, and the flue gas temperature is reduced to about 180 ℃. Due to the increase in steam temperature, turbine efficiency may be increased, thereby increasing the efficiency of the overall power plant.
The main steam parameters of the traditional glass kiln waste heat power generation boiler are increased from original main steam pressure to only.27 MPa, main steam temperature to only 485 ℃ and main steam pressure to 9.8MPa, main steam temperature to 545 ℃ and heat efficiency of the whole unit to about 2.1%, and the glass kiln waste heat power generation boiler has obvious energy saving and consumption reduction effects and can be widely applied to glass kiln waste heat power generation units.
Claims (6)
1. A high-temperature high-pressure glass kiln waste heat boiler with afterburning is characterized in that: the glass kiln comprises a glass kiln, a flow flue, an overheat flue and a steam drum, wherein the flow flue comprises a first flue, a second flue, a third flue and a fourth flue, and the first flue, the second flue, the third flue and the fourth flue form a snake-shaped flue together;
the burner is arranged on the overheat flue, the high-temperature superheater and the medium-temperature superheater are arranged in the overheat flue, and the end part of the overheat flue is communicated to the first flue;
and an SCR denitration device is fixed in the second flue.
2. The high-temperature and high-pressure glass kiln waste heat boiler with afterburning according to claim 1, which is characterized in that: the economizer of fourth flue and the economizer of third flue with water supply pipe intercommunication, economizer outlet pipe with the steam drum intercommunication, the downcomer of steam drum with the evaporimeter of first flue and the evaporimeter of third flue intercommunication, the saturated steam delivery tube of steam drum communicate with low temperature superheater, low temperature superheater's superheated steam export and medium temperature superheater's import pass through first connecting tube intercommunication, medium temperature superheater's superheated steam export and high temperature superheater pass through second connecting tube intercommunication.
3. The high-temperature and high-pressure glass kiln exhaust-heat boiler with afterburning according to claim 2, which is characterized in that: the main steam pipeline of the steam drum is communicated with the air inlet of the steam turbine.
4. The high-temperature and high-pressure glass kiln waste heat boiler with afterburning according to claim 3, which is characterized in that: the first flue is internally provided with a low-temperature superheater and a first evaporator.
5. The high-temperature and high-pressure glass kiln exhaust-heat boiler with afterburning according to claim 4, which is characterized in that: and a third evaporator and a third economizer are arranged in the third flue.
6. The high-temperature and high-pressure glass kiln exhaust-heat boiler with afterburning according to claim 5, which is characterized in that: and a fourth economizer is arranged in the fourth flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311234794.3A CN117419575A (en) | 2023-09-25 | 2023-09-25 | High-temperature high-pressure glass kiln waste heat boiler with afterburning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311234794.3A CN117419575A (en) | 2023-09-25 | 2023-09-25 | High-temperature high-pressure glass kiln waste heat boiler with afterburning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117419575A true CN117419575A (en) | 2024-01-19 |
Family
ID=89531566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311234794.3A Pending CN117419575A (en) | 2023-09-25 | 2023-09-25 | High-temperature high-pressure glass kiln waste heat boiler with afterburning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117419575A (en) |
-
2023
- 2023-09-25 CN CN202311234794.3A patent/CN117419575A/en active Pending
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