CN206959611U - A kind of smoke induced draught fan energy conserving system - Google Patents
A kind of smoke induced draught fan energy conserving system Download PDFInfo
- Publication number
- CN206959611U CN206959611U CN201720755817.9U CN201720755817U CN206959611U CN 206959611 U CN206959611 U CN 206959611U CN 201720755817 U CN201720755817 U CN 201720755817U CN 206959611 U CN206959611 U CN 206959611U
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- Prior art keywords
- air
- draught fan
- introduced machine
- flue
- smoke
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chimneys And Flues (AREA)
Abstract
The utility model discloses a kind of smoke induced draught fan energy conserving system, including：Kiln smoke duct, supply channel, water pump, regulating valve, dew point detector, spray equipment, temperature sensor, air-introduced machine, connect flue, chimney；The kiln smoke duct connects air-introduced machine import, and the air-introduced machine outlet is connected by connecting flue with chimney；Dew point analysis instrument, spray equipment, temperature sensor are installed successively by flue gas circulating direction in the kiln smoke duct, the water supply line connects pump entrance, exit of pump is connected by regulating valve with spray equipment, and the regulating valve receives the temperature signal from dew point analysis instrument and temperature sensor.The utility model utilizes spray cooling mode, reduces flue-gas temperature, so as to reduce flue gas volume flow, reaches the purpose for reducing smoke induced draught fan power consumption.
Description
Technical field
The utility model belongs to saving energy in kiln technical field, and in particular to a kind of smoke induced draught fan energy conserving system.
Background technology
Smoke induced draught fan is the indispensable equipment of kiln.Limited by process conditions and fuel, the exhaust gas temperature of kiln
It is general higher.For example, blast funnace hot blast stove exhaust gas temperature 140 ~ 160 DEG C of heater for rolling steel exhaust gas temperature, returns at 180 ~ 250 DEG C
Field stone ash furnace exhaust gas temperature is at 200 ~ 220 DEG C etc..These kilns typically use low-sulphur fuel, such as coke-stove gas, blast furnace gas, turn
Producer gas, natural gas, high-quality low-sulfur anthracite etc..In addition, because technical process contains water management, these kilns smoke evacuation dew-point temperature is very
It is low.So the acid dew point of kiln smoke evacuation is far below coal-burning boiler.
Because exhaust gas volumn is very big, and continuous discharge, so smoke evacuation air-introduced machine turns into these kiln maximum energy consumption equipments, typically
Account for more than the 50% of whole kiln power consumption.How by some measures, reduced on the premise of kiln normal operation is not influenceed
The energy consumption level of smoke evacuation air-introduced machine, it is an important key point of current kiln system energy-conservation.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of smoke induced draught fan energy conserving system, it utilizes water spray
Cooling method, flue-gas temperature is reduced, so as to reduce flue gas volume flow, reach the purpose for reducing smoke induced draught fan power consumption.
The utility model is achieved by the following technical solution.
A kind of smoke induced draught fan energy conserving system, including：Kiln smoke duct, supply channel, water pump, regulating valve, dew point inspection
Instrument is surveyed, spray equipment, temperature sensor, air-introduced machine, connects flue, chimney.
The kiln smoke duct connects air-introduced machine import, pacifies successively by flue gas circulating direction in the kiln smoke duct
Dew point analysis instrument, spray equipment, temperature sensor are filled, the water supply line connects pump entrance, and exit of pump passes through regulating valve
It is connected with spray equipment, the regulating valve receives the temperature signal from dew point analysis instrument and temperature sensor.
As further improvement of the utility model, the air-introduced machine entrance is provided with liquid barrier.
Water pump is constant voltage water pump.
Air-introduced machine is frequency converting induced draft fan.
The air-introduced machine outlet is connected by connecting flue with chimney.
Relation between power and total head, volume flow is consumed according to ventilation blower：W=P × V ÷ η, wherein W is fan shaft
Work(, P are blower press, and V is blower fan circulation volume flow, and η is fan efficiency, can be subtracted by reducing blower fan circulation volume flow
Few blower fan power consumption.And flue gas volume flow has with its temperature：V=nT, V are flue gas volume flow, and T is flue-gas temperature（Thermodynamics
Temperature）, n is coefficient, so by reducing flue-gas temperature, it is possible to realizes the power consumption for reducing smoke induced draught fan.
By spray cooling, the temperature of flue gas can be greatly reduced, so as to reduce flue gas volume, the power consumption drop of air-introduced machine
It is low.In order to match the new operating mode after cooling, Frequency Conversion Modification need to be carried out to the air-introduced machine on original flue.
The beneficial effects of the utility model are, using spray cooling mode, flue-gas temperature to be reduced, so as to reduce flue gas volume
Flow, reach the purpose for reducing smoke induced draught fan power consumption.
Certainly, implement any product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1, kiln smoke duct, 2, water supply line, 3, constant voltage water pump, 4, regulating valve, 5, dew point analysis instrument, 6, spray
Shower device, 7, temperature sensor, 8, liquid barrier, 9, frequency converting induced draft fan, 10, connection flue, 11, chimney.
Embodiment
Fig. 1 is a kind of specific embodiment of the present utility model, a kind of smoke induced draught fan energy conserving system of the embodiment, including
Kiln smoke duct 1, water supply line 2, constant voltage water pump 3, regulating valve 4, dew point analysis instrument 5, spray equipment 6, temperature sensor 7,
Liquid barrier 8, frequency converting induced draft fan 9, connect flue 10, chimney 11.
The kiln smoke duct 1 connects the import of frequency converting induced draft fan 9, and the frequency converting induced draft fan 9 is exported by connecting flue
10 are connected with chimney 11；Dew point analysis instrument 5, spray equipment are installed successively by flue gas circulating direction in the kiln smoke duct 1
6th, temperature sensor 7, the entrance of frequency converting induced draft fan 9 are provided with liquid barrier 8, and the water supply line 2 connects constant voltage water pump 3 and entered
Mouthful, the outlet of constant voltage water pump 3 is connected by regulating valve 4 with spray equipment 6, and the regulating valve 4 receives and comes from dew point analysis instrument 5 and temperature
Spend the temperature signal of sensor 7.
Kiln gas enters kiln smoke duct 1, and dew point analysis instrument 5 detects the temperature T1 and dew-point temperature T2 of flue gas.Spray
Shower device 6 is to the flue gas spray cooling in kiln smoke duct 1, the temperature T3 of flue gas after then the measurement of temperature sensor 7 cools.
To prevent unevaporated water droplet from being impacted to frequency converting induced draft fan 9, liquid barrier 8 is installed additional in the entrance of frequency converting induced draft fan 9.Regulating valve 4
Aperture is adjusted according to temperature signal T1, T2, T3, adjusts the injection flow rate of water injector 6.Constant voltage water pump 3 provides spray water source, and ensures
Pressure of supply water is stable.
The utility model is not limited to above-mentioned embodiment, and anyone should learn what is made under enlightenment of the present utility model
There is same or like technical scheme with the utility model, each fall within the scope of protection of the utility model.
Technology that the utility model is not described in detail, shape, construction part are known technology.
Claims (4)
1. a kind of smoke induced draught fan energy conserving system, it is characterized in that, including：Kiln smoke duct, supply channel, water pump, regulating valve,
Dew point detector, spray equipment, temperature sensor, air-introduced machine, connect flue, chimney；The kiln smoke duct connects air inducing
Machine import, the air-introduced machine outlet are connected by connecting flue with chimney；Flue gas circulating direction is pressed in the kiln smoke duct
Dew point analysis instrument, spray equipment, temperature sensor are installed successively, the water supply line connects pump entrance, and exit of pump passes through
Regulating valve is connected with spray equipment, and the regulating valve receives the temperature signal from dew point analysis instrument and temperature sensor.
2. smoke induced draught fan energy conserving system as claimed in claim 1, it is characterized in that, the air-introduced machine entrance is provided with gear liquid
Plate.
3. smoke induced draught fan energy conserving system as claimed in claim 1, it is characterized in that, water pump is constant voltage water pump.
4. smoke induced draught fan energy conserving system as claimed in claim 1, it is characterized in that, air-introduced machine is frequency converting induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720755817.9U CN206959611U (en) | 2017-06-27 | 2017-06-27 | A kind of smoke induced draught fan energy conserving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720755817.9U CN206959611U (en) | 2017-06-27 | 2017-06-27 | A kind of smoke induced draught fan energy conserving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206959611U true CN206959611U (en) | 2018-02-02 |
Family
ID=61385237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720755817.9U Active CN206959611U (en) | 2017-06-27 | 2017-06-27 | A kind of smoke induced draught fan energy conserving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206959611U (en) |
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2017
- 2017-06-27 CN CN201720755817.9U patent/CN206959611U/en active Active
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