CN106705421A - Energy-saving pulverized coal boiler - Google Patents
Energy-saving pulverized coal boiler Download PDFInfo
- Publication number
- CN106705421A CN106705421A CN201611228903.0A CN201611228903A CN106705421A CN 106705421 A CN106705421 A CN 106705421A CN 201611228903 A CN201611228903 A CN 201611228903A CN 106705421 A CN106705421 A CN 106705421A
- Authority
- CN
- China
- Prior art keywords
- energy
- saving
- economizer
- flue gas
- pulverized coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F22D1/003—Feed-water heater systems
-
- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
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- 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)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention discloses an energy-saving pulverized coal boiler. The energy-saving pulverized coal boiler comprises a furnace, and a burner and a boiler barrel which are arranged at the top of the furnace; the furnace is formed by an encircling membrane wall structure of a water-cooled piping system; a U-shaped flue gas channel is formed in the furnace; the burner is arranged at the top of a descending section of the U-shaped flue gas channel; a convection device and a superheater are arranged in an ascending section of the U-shaped flue gas channel; the convection device is located at the upper part of the superheater; the boiler barrel communicates with the convection device, the superheater, an economizer, a condensing energy saver and the water-cooled piping system through a connecting piping system; a flue gas outlet is formed in the tail end of the ascending section of the U-shaped flue gas channel, and communicates with the flue gas channel; the flue gas channel comprises a first descending section, an ascending section and a second ascending section, wherein an economizer is arranged on the first descending section; a bag-type dust collector is arranged on the ascending section; and the condensing energy saver is arranged on the second descending section. Actual tests prove that through the adoption of the scheme, the thermal efficiency of a conventional boiler can be improved by 3%-5%, and energy waste and environmental pollution can be significantly reduced.
Description
Technical field
This programme is related to Industrial Boiler field, and in particular to a kind of energy-saving pulverized coal boiler.
Background technology
Pulverized-coal fired boiler be it is a kind of with combusting coal fines or based on coal dust while the boiler plant of other fuel that adulterate.Fuel
Particularity is doomed it has significant difference with traditional coal-burning boiler or gas fired-boiler.Wherein it is topmost difference one of be exactly
In its combustion product be high-temperature flue gas in carry substantial amounts of dust granules.Situation with a large amount of dust in this high-temperature flue gas
Coal-fired, gas fired-boiler never runs into, therefore pulverized-coal fired boiler has to configuration high-efficiency dust remover to avoid generation serious
Environmental pollution.The environmental emission standard increasingly strict to reach requirement, existing pulverized-coal fired boiler all configures sack cleaner, in cloth
Electrostatic precipitator is arranged after bag dust collector again.Because sack cleaner operating temperature is required, general work temperature is 100
~190 DEG C, therefore it limits the exhaust gas temperature of existing pulverized-coal fired boiler, have impact on the thermal efficiency of boiler, and then cause energy wave
Take.
The content of the invention
The purpose of this programme is to propose a kind of energy-saving pulverized coal boiler.
To achieve the above object, a kind of energy-saving pulverized coal boiler of this programme, it includes burner hearth and is arranged at the combustion of roof of the furnace
Burner and drum, burner hearth enclosed by water-cooled piping rock mechanism wall construction form, burner hearth is internally formed U-shaped exhaust gases passes, in U
Be provided with burner at the top of font exhaust gases passes descending branch, be provided with the U-shaped exhaust gases passes ascent stage convection device and
Superheater, convection device is located at superheater top；Drum is by connecting piping and convection device, superheater, economizer, condensing
Energy-saving appliance is connected with water-cooled piping；The U-shaped exhaust gases passes ascent stage end be provided with exhanst gas outlet, exhanst gas outlet connects with flue
Logical, flue includes the first descending branch, ascent stage and the second descending branch, economizer is provided with the first descending branch, in the ascent stage
On be provided with sack cleaner, condensing energy-saving device is provided with the second descending branch.
The specific feature of this programme also has, and membrane wall structure is that Welding flat steel forms wooden partition structure between pipeline.
Pipeline in condensing energy-saving device and economizer is series connection, and water inlet and the boiler feed water valve of condensing energy-saving device connect
Logical, condensing energy-saving device delivery port is connected with the water inlet of economizer, and the delivery port of economizer is connected with drum water inlet；Drum
Delivery port is connected by down-comer with water-cooled piping and convection device.
Condensing energy-saving device is multiple, is connected in series.
The beneficial effect of this programme is：This programme compares traditional pulverized-coal fired boiler and both takes full advantage of low-temperature flue gas, and not shadow
Ring dust pelletizing system normal work.This New-type boiler system finds to improve the thermal efficiency of existing pulverized-coal fired boiler by actual test
3%~5%, hence it is evident that reduce energy waste and environmental pollution.
Brief description of the drawings
Fig. 1 is energy-saving pulverized coal boiler structure schematic diagram.
In figure：1- burners；2- water-cooled pipings；3- convection devices；4- superheaters；5- connects piping；6- drums；7- saves coal
Device；8- sack cleaners；9- condensing energy-saving devices.
Specific embodiment
As shown in figure 1, a kind of energy-saving pulverized coal boiler, it includes burner hearth and is arranged at the burner 1 and drum of roof of the furnace
6, burner hearth enclosed by the rock mechanism wall construction of water-cooled piping 2 form, burner hearth is internally formed U-shaped exhaust gases passes, in U-shaped flue gas
Burner 1 is provided with the top of passage descending branch, convection device 3 and superheater are provided with the U-shaped exhaust gases passes ascent stage
4, convection device 3 is located at the top of superheater 4；Drum 6 is by connecting piping 5 and convection device 3, superheater 4, economizer 7, condensation
Formula energy-saving appliance 9 is connected with water-cooled piping 2；The U-shaped exhaust gases passes ascent stage end be provided with exhanst gas outlet, exhanst gas outlet and cigarette
Road is connected, and flue includes the first descending branch, ascent stage and the second descending branch, economizer 7 is provided with the first descending branch, upper
Rise and be provided with sack cleaner 8 in section, condensing energy-saving device 9 is provided with the second descending branch.
Rectangle membrane wall structure is that Welding flat steel forms wooden partition structure between pipeline.
Pipeline in condensing energy-saving device and economizer is series connection, and water inlet and the boiler feed water valve of condensing energy-saving device connect
Logical, condensing energy-saving device delivery port is connected with the water inlet of economizer, and the delivery port of economizer is connected with drum water inlet；Drum
Delivery port is connected by down-comer with water-cooled piping and convection device.
Condensing energy-saving device is multiple, is connected in series.
The flue gas flow of the novel energy-saving high-efficiency pulverized-coal fired boiler described in this programme is such：Coal burner is arranged in pot
Furnace roof portion, coal dust mixes with air outside burner hearth, burn after the U-shaped exhaust gases passes that spray into burner hearth, reach U-shaped flue gas and lead to
During road descending branch end after-flame and turn to it is upward, the high-temperature flue gas of generation flow through successively superheater 4, convection device 3, economizer 7,
Sack cleaner 8 and condensing energy-saving device 9, complete diabatic process.
The medium flow of this programme is divided into Water flow-path, steam water interface flow and steam flow.Idiographic flow is such：
A) boiler feedwater initially enters condensing energy-saving device, then enters back into economizer and finally reaches drum；B) water in drum passes through
Down-comer enters water-cooled piping 2 and convection device 3, and lower header is arrived first into the water in water-cooled piping 2, is then arrived by membrane wall
Up to upper collecting chamber；C) during the steam water interface in upper collecting chamber generation is again introduced into drum；D) vapor in drum enters Ji Qiji
Superheater is entered back into after case carries out reheating generation superheated steam, and superheated steam enters into outside by super-heater exit case
Pipe network.
Claims (4)
1. a kind of energy-saving pulverized coal boiler, it includes burner hearth and is arranged at the burner and drum of roof of the furnace, and burner hearth is by water cooling tube
System formed membrane wall structure enclose form, burner hearth is internally formed U-shaped exhaust gases passes, on the top of U-shaped exhaust gases passes descending branch
Portion is provided with burner, and convection device and superheater are provided with the U-shaped exhaust gases passes ascent stage, and convection device is located at overheat
Device top；Drum is connected by connecting piping and convection device, superheater, economizer, condensing energy-saving device with water-cooled piping；
The U-shaped exhaust gases passes ascent stage, end was provided with exhanst gas outlet, and exhanst gas outlet is connected with flue, and flue includes the first descending branch,
Ascent stage and the second descending branch, economizer is provided with the first descending branch, and sack cleaner is provided with the ascent stage,
Condensing energy-saving device is provided with two descending brancies.
2. energy-saving pulverized coal boiler according to claim 1, it is characterized in that membrane wall structure is the Welding flat steel between pipeline
Form wooden partition structure.
3. energy-saving pulverized coal boiler according to claim 1, it is characterized in that the pipeline in condensing energy-saving device and economizer is
Series connection, the water inlet of condensing energy-saving device is connected with boiler feed water valve, the water inlet of condensing energy-saving device delivery port and economizer
Connection, the delivery port of economizer is connected with drum water inlet；Drum delivery port is by down-comer and water-cooled piping and convection device
Connection.
4. energy-saving pulverized coal boiler according to claim 1, it is characterized in that condensing energy-saving device is multiple, is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228903.0A CN106705421A (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228903.0A CN106705421A (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705421A true CN106705421A (en) | 2017-05-24 |
Family
ID=58896534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611228903.0A Withdrawn CN106705421A (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705421A (en) |
-
2016
- 2016-12-27 CN CN201611228903.0A patent/CN106705421A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170524 |
|
| WW01 | Invention patent application withdrawn after publication |