CN206320930U - Energy-saving pulverized coal boiler - Google Patents
Energy-saving pulverized coal boiler Download PDFInfo
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- CN206320930U CN206320930U CN201621447490.0U CN201621447490U CN206320930U CN 206320930 U CN206320930 U CN 206320930U CN 201621447490 U CN201621447490 U CN 201621447490U CN 206320930 U CN206320930 U CN 206320930U
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- descending branch
- exhaust gases
- economizer
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Abstract
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, burner hearth enclosed by water-cooled piping rock mechanism wall construction form, burner hearth is internally formed U-shaped exhaust gases passes, burner is provided with the top of U-shaped exhaust gases passes descending branch, convection device and superheater are provided with the U-shaped exhaust gases passes ascent stage, convection device is located at superheater 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 be provided with exhanst gas outlet, exhanst gas outlet is connected with flue, flue includes the first descending branch, ascent stage and the second descending branch, economizer is provided with the first descending branch, sack cleaner is provided with the ascent stage, condensing energy-saving device is provided with the second descending branch.This programme finds the thermal efficiency of existing pulverized-coal fired boiler can be improved into 3%~5% by actual test, hence it is evident that reduce energy waste and environmental pollution.
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 for 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.The situation of a large amount of dust is carried in this high-temperature flue gas
Coal-fired, gas fired-boiler never runs into, therefore pulverized-coal fired boiler has to configure high-efficiency dust remover to avoid producing seriously
Environmental pollution.To reach requirement increasingly strict environmental emission standard, the whole configuration sack cleaners of existing pulverized-coal fired boiler, 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.
Utility model content
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 the Welding flat steel formation 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 that the thermal efficiency of existing pulverized-coal fired boiler can be improved 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- connection pipings；6- drums；7- saves coal
Device；8- sack cleaners；9- condensing energy-saving devices.
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.
Membrane wall structure is the Welding flat steel formation 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 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 spray into the U-shaped exhaust gases passes in 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, arrives first lower header into the water in water-cooled piping 2, is then arrived by membrane wall
Up to upper collecting chamber；C) steam water interface generated in upper collecting chamber is again introduced into drum；D) vapor in drum enters Ji Qiji
Superheater is entered back into after case and carries out reheating generation superheated steam, superheated steam enters 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, are provided with economizer in the first descending branch, sack cleaner are 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 passes through 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 |
|---|---|---|---|
| CN201621447490.0U CN206320930U (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621447490.0U CN206320930U (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206320930U true CN206320930U (en) | 2017-07-11 |
Family
ID=59260084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621447490.0U Active CN206320930U (en) | 2016-12-27 | 2016-12-27 | Energy-saving pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206320930U (en) |
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2016
- 2016-12-27 CN CN201621447490.0U patent/CN206320930U/en active Active
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