CN206112898U - Utilize wind constant temperature system of varying duty that condensate water adjusted temperature - Google Patents
Utilize wind constant temperature system of varying duty that condensate water adjusted temperature Download PDFInfo
- Publication number
- CN206112898U CN206112898U CN201621086510.6U CN201621086510U CN206112898U CN 206112898 U CN206112898 U CN 206112898U CN 201621086510 U CN201621086510 U CN 201621086510U CN 206112898 U CN206112898 U CN 206112898U
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- CN
- China
- Prior art keywords
- air
- condensate
- low
- stack
- economizer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 11
- 239000003245 coal Substances 0.000 claims description 15
- 230000001172 regenerating effect Effects 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 8
- 230000003134 recirculating effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000001717 pathogenic effect Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model belongs to thermal power trade coal -fired generating unit field specifically is an utilize wind constant temperature system of varying duty that condensate water adjusted temperature, include that it gets the condensate water main line that the condensate water advances the low -level (stack -gas) economizer to follow heat recovery system, the condensate water absorbs low -grade heat in the low -level (stack -gas) economizer after, partly condensate water returns to heat recovery system through condensate line I, and another part condensate water absorbs the high -grade heat in condensate line II gets into a forced air cooler, and the condensate water that forced air cooler on the warp intensified returns to heat recovery system, and one time wind gets into the coal pulverizer after a forced air cooler lowers the temperature. Compared with the prior art, the utility model discloses an extract partly condensate water from heat recovery system, absorb the heat in the wind one time, can realize getting into the invariable purpose of wind -warm syndrome of coal pulverizer, retrieved wind high -grade heat of heat and the low -grade heat of flue gas in addition, improved unit efficiency.
Description
Technical field
This utility model belongs to thermal power industry Thermal generation unit field, specially a kind of utilization condensate homoiothermic
Varying duty First air constant temperature system.
Background technology
The design of Thermal generation unit is calculated and designed based on " design coal ", thereby determines that boiler combustion equipment
Deng.The impact of the factors such as variation, the burner reconstruction with raw coal price, boiler combustion equipment meeting off-design operating mode operation,
Operation to coal unit causes challenge.
Under conditions of boiler combustion equipment and ature of coal are certain, the regulation of First air is significant to catching fire and surely firing.
According to the size of ature of coal volatile content, a pathogenic wind-warm should both meet the requirement caught fire as early as possible, stably burn, and powder processed is should ensure that again
System and the safety of powder feed system work.When one time pathogenic wind-warm exceedes powder processed, the security regulations of powder feed system, it is possible to occur quick-fried
Fried or spontaneous combustion.
In order to avoid there is the thing that spontaneous combustion or blast etc. jeopardize equipment safety and operations staff's personal safety in pulverized coal preparation system
Therefore, typically in the dry wind of pulverized coal preparation system（Heat primary air）Entrance mixes homoiothermic wind（Cold First air）Carry out pathogenic wind-warm regulation.But
It is, with actual operating mode off-design operating mode, to occur in that and be dried the higher situation of air temperature（Even need homoiothermic wind standard-sized sheet
Pulverized coal preparation system can be just set to operate in safe temperature）；And homoiothermic wind will excessively cause the primary air flow for entering air preheater to reduce, and then
Exhaust gas temperature is caused to rise, the problems such as boiler efficiency declines.
The flue gas loss of Thermal generation unit is a most important heat loss in boiler operatiopn, accounts for boiler heat loss
60%～70%.In order to reduce flue gas loss, exhaust gas temperature is reduced, energy saving improves the economy of power plant, boiler smoke system
System can arrange low-level (stack-gas) economizer.
Utility model content
The technical problems to be solved in the utility model is：With actual operating mode off-design work in boiler combustion equipment
Condition, occurs in that the higher situation of air temperature that is dried, and homoiothermic wind will excessively cause the primary air flow for entering air preheater to reduce, and then
Cause exhaust gas temperature to rise, the problems such as boiler efficiency declines, and the heat of flue gas loss is also very more, be to solve above-mentioned asking
A kind of topic, there is provided varying duty First air constant temperature system.
The purpose of this utility model is realized in the following manner：
A kind of varying duty First air constant temperature system of utilization condensate homoiothermic, including condensate is taken from heat regenerative system low temperature is entered
The condensate main line of economizer, condensate absorbs after low-grade heat in low-level (stack-gas) economizer, and a part of condensate Jing coagulates
Bear water pipeline I and be back to heat regenerative system, another part condensate Jing condensate lines II is entered in First air cooler and absorbed high
The heat of grade, the condensate that Jing First airs cooler heats up is back to heat regenerative system, the cooling of First air Jing First airs cooler
Coal pulverizer is entered afterwards.
Be disposed with from heat regenerative system to low-level (stack-gas) economizer on condensate main line check-valves, motor-operated isolation valve, gate valve,
Booster pump, check-valves and gate valve.
When the inlet water temperature of low-level (stack-gas) economizer is unsatisfactory for the service requirement of low-level (stack-gas) economizer, it is solidifying that low-level (stack-gas) economizer is exported
Bear water Jing low-level (stack-gas) economizer recirculating lines to be back on condensate main line between motor-operated isolation valve and gate valve, after Jing condense
Water main line is again introduced into low-level (stack-gas) economizer.
The low-level (stack-gas) economizer recirculating line last time is provided with gate valve VIII 10, electric control valve III 11 and gate valve Ⅸ 12.
Gate valve III 14, electric control valve I 15 and gate valve IV 16 are disposed with condensate line I.
Gate valve V 18, electric control valve II 19, gate valve VI 20, First air cooler are disposed with condensate line II
23 and gate valve VII 24.
The bypass valve line of overhaul reserve is provided with condensate line II, gate valve Ⅹ is provided with bypass valve line
22。
Jing after air preheater, part First air Jing electric adjustable air doors enter First air cooler, part First air to First air
Jing First airs bypass air channel imports the outlet conduit of First air cooler, and First air bypass is provided with electric adjustable air doors on air channel
Ⅱ28。
Jing after air preheater, part First air removing dust device and air-introduced machine are entered in low-level (stack-gas) economizer First air, are saved from low temperature
First air Jing desulfurizing towers and smoke stack emission in coal device out is into air.
Relative to prior art, this utility model is absorbed once using the condensate that a part is extracted from heat regenerative system
Heat in wind, can realize entering the constant purpose of pathogenic wind-warm of coal pulverizer, and reclaim the high-grade heat of heat primary air
With the low-grade heat of flue gas, unit efficiency is improve.
Description of the drawings
Fig. 1 is this utility model structural representation.
Wherein, 1 is condensate main line；2 is check-valves I；3 is electronic isolation valve；4 is gate valve I；5 is booster pump；6
It is check-valves II；7 is gate valve II；8 is low-level (stack-gas) economizer；9 is low-level (stack-gas) economizer recirculating line；10 is gate valve VIII；11 is electricity
Dynamic regulating valve III；12 is gate valve Ⅸ；13 is condensate line I；14 is gate valve III；15 is electric control valve I；16 is gate valve IV；
17 is condensate line II；18 is gate valve V；19 is electric control valve II；20 is gate valve VI；21 is valve group bypass conduit；22
It is gate valve Ⅹ；23 is First air cooler；24 is gate valve VII；25 is heat primary air air channel；26 is electric adjustable air doors I；27 are
Heat primary air bypasses air channel；28 is electric adjustable air doors II；30 is coal pulverizer；31 is air preheater；32 is cleaner unit；33 is air inducing
Machine；34 is desulfurizing tower；35 is chimney；36 is primary air fan；37 is low-pressure heater.
Specific embodiment
As shown in figure 1, a kind of varying duty First air constant temperature system of utilization condensate homoiothermic, solidifying including taking from heat regenerative system
The condensate main line 1 into low-level (stack-gas) economizer 8 is born water, after condensate absorbs low-grade heat in low-level (stack-gas) economizer 8, one
Fractional condensation bears water Jing condensate line I13 and is back to heat regenerative system, and another part condensate Jing condensate lines II17 is entered once
High-grade heat is absorbed in forced air cooler 23, the condensate that Jing First airs cooler 23 heats up is back to heat regenerative system, once
Wind enters coal pulverizer 30 Jing after the cooling of First air cooler 23.
On condensate main line 1 from heat regenerative system to low-level (stack-gas) economizer 8 be disposed with check-valves I 2, motor-operated isolation valve 3,
Gate valve I 4, booster pump 5, check-valves II 6 and gate valve II 7.
When the inlet water temperature of low-level (stack-gas) economizer 8 is unsatisfactory for the service requirement of low-level (stack-gas) economizer 8, low-level (stack-gas) economizer 8 is exported
Condensate Jing low-level (stack-gas) economizers recirculating line 9 be back on condensate main line 1 between motor-operated isolation valve 3 and gate valve I 4,
After Jing condensates main line 1 be again introduced into low-level (stack-gas) economizer 8.
Gate valve VIII 10, electric control valve III 11 and gate valve Ⅸ 12 are disposed with low-level (stack-gas) economizer recirculating line 9.
Gate valve III 14, electric control valve I 15 and gate valve IV 16 are disposed with condensate line I13.
Gate valve V 18, electric control valve II 19, the cooling of gate valve VI 20, First air are disposed with condensate line II17
Device 23 and gate valve VII 24.
The bypass valve line 21 of overhaul reserve is provided with condensate line II17, is provided with bypass valve line 21
Gate valve Ⅹ 22.
Jing after air preheater 31, part First air Jing electric adjustable air doors I 26 are into First air cooler 23, part for First air
First air Jing First airs bypass air channel 27 imports the outlet conduit of First air cooler 23, and First air bypass is provided with air channel 27
Electric adjustable air doors II 28.
Jing after entering air preheater 31 Jing primary air fan 36, part First air removing dust device 32 and air-introduced machine 33 are entered First air
In low-level (stack-gas) economizer 8, the First air Jing desulfurizing towers 34 and chimney 35 from low-level (stack-gas) economizer 8 out is emitted in air.
Operation principle of the present utility model and the course of work are：
In Thermal generation unit variable load operation, this utility model is installed in Thermal generation unit therrmodynamic system.This
Figure show certain inlet duct of one-level low-pressure heater 37 in heat regenerative system and takes condensate, Jing condensates main line 1 and its
On check-valves I 2, electronic isolation valve 3, gate valve I 4, booster pump 5, check-valves II 6 enter low-level (stack-gas) economizer 8 absorb flue gas heat
Amount；When the inlet water temperature of low-level (stack-gas) economizer 8 is unsatisfactory for 8 service requirement of low-level (stack-gas) economizer, the recirculation conduit 9 of Jing low-level (stack-gas) economizers 8 with
And gate valve VIII 10 thereon, electric control valve III 11, gate valve Ⅸ 12 carry out recirculation；Low-level (stack-gas) economizer 8 is met after service requirement,
According to coal pulverizer 30 require First air running temperature, adjust a part absorb flue gas heat condensate Jing condensate lines
I 13 and thereon gate valve III 14, electric control valve I 15, gate valve IV 16 return certain entrance of one-level low-pressure heater 37；Other one
Point absorb the condensate Jing condensate lines II 17 and gate valve V 18, electric control valve II 19, gate valve VI thereon of flue gas heat
20, into First air cooler 23, the heat of heat primary air is absorbed, absorb the return of condensate Jing gate valves VII 24 after heat a certain
Level the outlet conduit of low-pressure heater 37, wherein valve group bypass duct 21 and thereon gate valve Ⅹ 22 be valve group arrange maintenance it is standby
Use pipeline.For heat primary air road, a part of heat primary air Jing heat primary airs air channel 25 and electric adjustable air doors I 26 thereon enter
Enter First air cooler 23, remaining hot blast walks heat primary air bypass air channel 27 and electric adjustable air doors thereon II 28, two
Divide First air to mix after First air cooler 23, reach a constant purpose of pathogenic wind-warm.
Claims (9)
1. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic, it is characterised in that：It is solidifying including taking from heat regenerative system
The condensate main line into low-level (stack-gas) economizer is born water, condensate absorbs after low-grade heat in low-level (stack-gas) economizer, a part
Condensate Jing condensate line I are back to heat regenerative system, and another part condensate Jing condensate lines II is cooled down into First air
High-grade heat is absorbed in device, the condensate that Jing First airs cooler heats up is back to heat regenerative system, First air Jing First airs
Coal pulverizer is entered after cooler cooling.
2. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 1, it is characterised in that：
Be disposed with from heat regenerative system to low-level (stack-gas) economizer on condensate main line check-valves, motor-operated isolation valve, gate valve, booster pump,
Check-valves and gate valve.
3. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 2, it is characterised in that：
When the inlet water temperature of low-level (stack-gas) economizer is unsatisfactory for the service requirement of low-level (stack-gas) economizer, the condensate Jing of low-level (stack-gas) economizer outlet is low
Warm economizer recirculating line is back on condensate main line between motor-operated isolation valve and gate valve, after Jing condensate main lines
It is again introduced into low-level (stack-gas) economizer.
4. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 3, it is characterised in that：
The low-level (stack-gas) economizer recirculating line last time is provided with gate valve VIII 10, electric control valve III 11 and gate valve Ⅸ 12.
5. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 1, it is characterised in that：
Gate valve III 14, electric control valve I 15 and gate valve IV 16 are disposed with condensate line I.
6. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 1, it is characterised in that：
Gate valve V 18, electric control valve II 19, gate valve VI 20, First air cooler 23 and gate valve are disposed with condensate line II
Ⅶ24。
7. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 6, it is characterised in that：
The bypass valve line of overhaul reserve is provided with condensate line II, gate valve Ⅹ 22 is provided with bypass valve line.
8. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 1, it is characterised in that：
Jing after air preheater, part First air Jing electric adjustable air doors enter First air cooler, part First air Jing First airs to First air
Bypass air channel imports the outlet conduit of First air cooler, and First air bypass is provided with electric adjustable air doors II 28 on air channel.
9. the varying duty First air constant temperature system of a kind of utilization condensate homoiothermic according to claim 8, it is characterised in that：
Jing after air preheater, part First air removing dust device and air-introduced machine are entered in low-level (stack-gas) economizer First air, are gone out from low-level (stack-gas) economizer
The First air Jing desulfurizing towers for coming and smoke stack emission are into air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621086510.6U CN206112898U (en) | 2016-09-28 | 2016-09-28 | Utilize wind constant temperature system of varying duty that condensate water adjusted temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621086510.6U CN206112898U (en) | 2016-09-28 | 2016-09-28 | Utilize wind constant temperature system of varying duty that condensate water adjusted temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206112898U true CN206112898U (en) | 2017-04-19 |
Family
ID=58521955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621086510.6U Expired - Fee Related CN206112898U (en) | 2016-09-28 | 2016-09-28 | Utilize wind constant temperature system of varying duty that condensate water adjusted temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206112898U (en) |
-
2016
- 2016-09-28 CN CN201621086510.6U patent/CN206112898U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: 451450 Henan province Zhengzhou city Zhongmu Green Bo Cultural Industrial Park No. 9 Patentee after: China Electric Power Construction Group Huazhong Electric Power Design Research Institute Co., Ltd. Address before: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212 Patentee before: Hennan Electric Power Survey & Design Institute |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20190928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |