CN203099790U - 600 MW supercritical circulating fluid bed boiler system provided with external heat exchanger - Google Patents
600 MW supercritical circulating fluid bed boiler system provided with external heat exchanger Download PDFInfo
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- CN203099790U CN203099790U CN 201320097487 CN201320097487U CN203099790U CN 203099790 U CN203099790 U CN 203099790U CN 201320097487 CN201320097487 CN 201320097487 CN 201320097487 U CN201320097487 U CN 201320097487U CN 203099790 U CN203099790 U CN 203099790U
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- heat exchanger
- external heat
- burner hearth
- separator
- pipeline
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Abstract
The utility model discloses a 600 MW supercritical circulating fluid bed boiler system provided with an external heat exchanger. The 600MW supercritical circulating fluid bed boiler system provided with the external heat exchanger comprises a boiler hearth, a separator, a wind smoke system, a coal feeder and a limestone feeder, wherein the boiler hearth is connected with the separator through a flue, the separator is connected with the wind smoke system through the flue, the coal feeder is connected with the boiler hearth through a coal feeding pipeline, and the limestone feeder is connected with the boiler hearth through a limestone pipeline. The 600MW supercritical circulating fluid bed is further provided with the external heat exchanger, wherein the external heat exchanger is connected with the boiler hearth and the separator respectively through pipelines, a feed-back valve is arranged at a connection position between the external heat exchanger and the separator, a primary air inlet is formed at the lower end of the boiler hearth, the primary air inlet is connected with a primary air fan through a pipeline, secondary air inlets are formed in the middle of the boiler hearth, and the secondary air inlets are connected with a secondary air fan through a pipeline. Through the independent external heat exchanger, cooling is more thorough, combustion efficiency is more stable when coal enters the boiler hearth to be combusted again, the concentration of sulfur dioxide (SO2) in smoke is better calculated, and desulfurizing agents are saved.
Description
Technical field
The utility model relates to the overcritical circulating fluidized bed boiler of the 600MW that is with external heat exchanger system, belongs to the CFBB technical field.
Background technology
China is as maximum in the world developing country, and present production of energy amount occupies the 3rd in the world, and primary energy consumption occupies the 2nd.But because China's rich coal oil starvation weak breath has formed the structure of taking as the leading factor with coal, wherein 50% ~ 60% coal is used for generating electricity, and becomes the main source of pollution that caused by coal burning thing.Therefore, development clean coal power generation technology improves generating efficiency, reduces disposal of pollutants, is the importance of China's energy strategy.
In recent years, domestic power industry development is very fast, present development trend to big capacity, high parameter, high efficiency, low pollution and low emission, Combustion technology of circulating fluidized can stove in the unique advantage of direct desulfurization and burning coal inferior, it is the emphasis that China develops clean coal combustion technology, have good market prospects and development prospect, combustion system of circulating fluidized bed boiler is one and has non-linear, large time delay, multiple coupled complex process.
The 600MW super critical boiler of prior art as shown in Figure 2, adopt blower fan to carry out the cooling of feed back in the flue gas, cooling institute required airflow is very big like this, and can't guarantee that cooling thoroughly, reenter burner hearth and mix to burn with initiate lime stone and coal and can cause the efficiency of combustion instability, make SO in the flue gas
2Concentration produce fluctuation, desulfurization work is impacted, cause the waste of desulfurizing agent.
The utility model content
The purpose of this utility model is, proposed the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, made cooling more thorough, so that when entering burner hearth and rekindling by independent external heat exchanger, efficiency of combustion is more stable, better calculates SO in the flue gas
2Concentration, save desulfurizing agent.
The technical solution of the utility model: the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, comprise burner hearth, separator, air and flue system, feeder and lime stone batcher, burner hearth is connected with separator by flue, separator is connected with air and flue system by flue, feeder is connected with burner hearth by the coal supply pipeline, the lime stone batcher is connected with burner hearth by the lime stone pipeline, also be provided with external heat exchanger, external heat exchanger links to each other with separator with burner hearth respectively by pipeline, the junction of external heat exchanger and separator is provided with material returning valve, the lower end of burner hearth is provided with the wind inlet one time, one time the wind inlet links to each other with primary air fan by pipeline, the middle part of burner hearth is provided with secondary wind inlet, and secondary wind inlet links to each other with overfire air fan by pipeline.Make cooling more thorough by independent external heat exchanger is set between burner hearth and separator, so that when entering burner hearth and rekindling, efficiency of combustion is more stable, better calculates SO in the flue gas
2Concentration, save desulfurizing agent.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, described secondary wind inlet is 2, and these 2 secondary wind inlets are located at the both sides of burner hearth respectively.Secondary wind inlet all is set in the burner hearth both sides, strengthens the contact area of lime stone, coal and wind, improve efficiency of combustion.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, also be provided with the blank valve on the connecting pipe of described external heat exchanger and separator.On the connecting pipe of external heat exchanger and separator, also be provided with the blank valve, can mediate to the feed back temperature by regulating the blank valve.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, be provided with filter, economizer and air preheater in the described air and flue system, filter, economizer and air preheater are connected in turn.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, the connecting pipe of the connecting pipe of a described primary air fan and a wind inlet and overfire air fan and secondary wind inlet is all passed through air preheater inside.The connecting pipe of wind and secondary wind all from air preheater inside, is carried out preliminary waste heat, the air themperature parameter of wind inlet and secondary wind inlet is raise, better improve the interior efficiency of combustion of burner hearth.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, described separator is the circulation whirlwind separator.The circulation whirlwind separator has the advantages that pressure drop is low, enlarge-effect is little and separative efficiency is high, can better solid, liquid be separated with gas.
In the overcritical circulating fluidized bed boiler of the 600MW of the aforesaid this band external heat exchanger system, the pipeline opening that feeder is connected with burner hearth is located at the burner hearth homonymy with the pipeline opening that the lime stone batcher is connected with burner hearth.
Compared with prior art, the utility model makes cooling more thorough by independent external heat exchanger is set between burner hearth and separator, so that when entering burner hearth and rekindling, efficiency of combustion is more stable, better calculates SO in the flue gas
2Concentration, save desulfurizing agent; Secondary wind inlet all is set in the burner hearth both sides, strengthens the contact area of lime stone, coal and wind, improve efficiency of combustion; The connecting pipe of wind and secondary wind all from air preheater inside, is carried out preliminary waste heat, the air themperature parameter of wind inlet and secondary wind inlet is raise, better improve the interior efficiency of combustion of burner hearth; On the connecting pipe of external heat exchanger and separator, also be provided with the blank valve, can mediate to the feed back temperature by regulating the blank valve; The circulation whirlwind separator has the advantages that pressure drop is low, enlarge-effect is little and separative efficiency is high, can better solid, liquid be separated with gas.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the prior art constructions schematic diagram.
Being labeled as in the accompanying drawing: 1-burner hearth, 2-separator, 3-primary air fan, the 4-overfire air fan, 5-feeder, 6-lime stone batcher, wind inlet of 7-, 8-secondary wind inlet, 9-air and flue system, the 10-filter, the 11-economizer, 12-air preheater, 13-external heat exchanger, the 14-material returning valve, 15-blank valve.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but not as the foundation of the utility model being done any restriction.
Described secondary wind inlet 8 is 2, and these 2 secondary wind inlets 8 are located at the both sides of burner hearth 1 respectively.
Also be provided with blank valve 15 on the connecting pipe of described external heat exchanger 13 and separator 2.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Also be provided with blank valve 15 on the connecting pipe of described external heat exchanger 13 and separator 2.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Described secondary wind inlet 8 is 2, and these 2 secondary wind inlets 8 are located at the both sides of burner hearth 1 respectively.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Embodiment 4 of the present utility model: as shown in Figure 1, the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, comprise burner hearth 1, separator 2, air and flue system 9, feeder 5 and lime stone batcher 6, burner hearth 1 is connected with separator 2 by flue, separator 2 is connected with air and flue system 9 by flue, feeder 5 is connected with burner hearth 1 by the coal supply pipeline, lime stone batcher 6 is connected with burner hearth 1 by the lime stone pipeline, also be provided with external heat exchanger 13, external heat exchanger 13 links to each other with separator 2 with burner hearth 1 respectively by pipeline, external heat exchanger 13 is provided with material returning valve 14 with the junction of separator 2, the lower end of burner hearth 1 is provided with wind inlet 7 one time, wind inlet 7 links to each other with primary air fan 3 by pipeline, and the middle part of burner hearth 1 is provided with secondary wind inlet 8, and secondary wind enters the mouth and 8 links to each other with overfire air fan 4 by pipeline.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Embodiment 5 of the present utility model: as shown in Figure 1, the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, comprise burner hearth 1, separator 2, air and flue system 9, feeder 5 and lime stone batcher 6, burner hearth 1 is connected with separator 2 by flue, separator 2 is connected with air and flue system 9 by flue, feeder 5 is connected with burner hearth 1 by the coal supply pipeline, lime stone batcher 6 is connected with burner hearth 1 by the lime stone pipeline, also be provided with external heat exchanger 13, external heat exchanger 13 links to each other with separator 2 with burner hearth 1 respectively by pipeline, external heat exchanger 13 is provided with material returning valve 14 with the junction of separator 2, the lower end of burner hearth 1 is provided with wind inlet 7 one time, wind inlet 7 links to each other with primary air fan 3 by pipeline, and the middle part of burner hearth 1 is provided with secondary wind inlet 8, and secondary wind enters the mouth and 8 links to each other with overfire air fan 4 by pipeline.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Embodiment 7 of the present utility model: as shown in Figure 1, the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, comprise burner hearth 1, separator 2, air and flue system 9, feeder 5 and lime stone batcher 6, burner hearth 1 is connected with separator 2 by flue, separator 2 is connected with air and flue system 9 by flue, feeder 5 is connected with burner hearth 1 by the coal supply pipeline, lime stone batcher 6 is connected with burner hearth 1 by the lime stone pipeline, also be provided with external heat exchanger 13, external heat exchanger 13 links to each other with separator 2 with burner hearth 1 respectively by pipeline, external heat exchanger 13 is provided with material returning valve 14 with the junction of separator 2, the lower end of burner hearth 1 is provided with wind inlet 7 one time, wind inlet 7 links to each other with primary air fan 3 by pipeline, and the middle part of burner hearth 1 is provided with secondary wind inlet 8, and secondary wind enters the mouth and 8 links to each other with overfire air fan 4 by pipeline.
Described secondary wind inlet 8 is 2, and these 2 secondary wind inlets 8 are located at the both sides of burner hearth 1 respectively.
Also be provided with blank valve 15 on the connecting pipe of described external heat exchanger 13 and separator 2.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Embodiment 8 of the present utility model: as shown in Figure 1, the overcritical circulating fluidized bed boiler of the 600MW system of band external heat exchanger, comprise burner hearth 1, separator 2, air and flue system 9, feeder 5 and lime stone batcher 6, burner hearth 1 is connected with separator 2 by flue, separator 2 is connected with air and flue system 9 by flue, feeder 5 is connected with burner hearth 1 by the coal supply pipeline, lime stone batcher 6 is connected with burner hearth 1 by the lime stone pipeline, also be provided with external heat exchanger 13, external heat exchanger 13 links to each other with separator 2 with burner hearth 1 respectively by pipeline, external heat exchanger 13 is provided with material returning valve 14 with the junction of separator 2, the lower end of burner hearth 1 is provided with wind inlet 7 one time, wind inlet 7 links to each other with primary air fan 3 by pipeline, and the middle part of burner hearth 1 is provided with secondary wind inlet 8, and secondary wind enters the mouth and 8 links to each other with overfire air fan 4 by pipeline.
Described secondary wind inlet 8 is 2, and these 2 secondary wind inlets 8 are located at the both sides of burner hearth 1 respectively.
Also be provided with blank valve 15 on the connecting pipe of described external heat exchanger 13 and separator 2.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
The pipeline opening that feeder 5 is connected with burner hearth 1 is located at burner hearth 1 homonymy with the pipeline opening that lime stone batcher 6 is connected with burner hearth 1.
Described secondary wind inlet 8 is 2, and these 2 secondary wind inlets 8 are located at the both sides of burner hearth 1 respectively.
Also be provided with blank valve 15 on the connecting pipe of described external heat exchanger 13 and separator 2.
Be provided with filter 10, economizer 11 and air preheater 12 in the described air and flue system 9, filter 10, economizer 11 and air preheater 12 are connected in turn.
The connecting pipe of a described primary air fan 3 and a wind inlet 7 and overfire air fan 4 all pass through air preheater 12 inside with the connecting pipe of secondary wind inlet 8.
Described separator 2 is the circulation whirlwind separator.
Claims (7)
1. be with the overcritical circulating fluidized bed boiler of the 600MW system of external heat exchanger, comprise burner hearth (1), separator (2), air and flue system (9), feeder (5) and lime stone batcher (6), burner hearth (1) is connected with separator (2) by flue, separator (2) is connected with air and flue system (9) by flue, feeder (5) is connected with burner hearth (1) by the coal supply pipeline, lime stone batcher (6) is connected with burner hearth (1) by the lime stone pipeline, it is characterized in that: also be provided with external heat exchanger (13), external heat exchanger (13) links to each other with separator (2) with burner hearth (1) respectively by pipeline, external heat exchanger (13) is provided with material returning valve (14) with the junction of separator (2), the lower end of burner hearth (1) is provided with a wind inlet (7), a wind inlet (7) links to each other with primary air fan (3) by pipeline, the middle part of burner hearth (1) is provided with secondary wind inlet (8), and secondary wind inlet (8) links to each other with overfire air fan (4) by pipeline.
2. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 1 system is characterized in that: described secondary wind inlet (8) is 2, and these 2 secondary wind inlets (8) are located at the both sides of burner hearth (1) respectively.
3. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 1 system is characterized in that: also be provided with blank valve (15) on the connecting pipe of described external heat exchanger (13) and separator (2).
4. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 1 system, it is characterized in that: be provided with filter (10), economizer (11) and air preheater (12) in the described air and flue system (9), filter (10) is connected with economizer (11), and economizer (11) is connected with air preheater (12).
5. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 4 system is characterized in that: described primary air fan (3) all passes through air preheater (12) inside with the connecting pipe and the overfire air fan (4) of a wind inlet (7) with the connecting pipe of secondary wind inlet (8).
6. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 1 system is characterized in that: described separator (2) is the circulation whirlwind separator.
7. the overcritical circulating fluidized bed boiler of the 600MW of band external heat exchanger according to claim 1 system is characterized in that: the pipeline opening that feeder (5) is connected with burner hearth (1) is located at burner hearth (1) homonymy with the pipeline opening that lime stone batcher (6) is connected with burner hearth (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097487 CN203099790U (en) | 2013-03-04 | 2013-03-04 | 600 MW supercritical circulating fluid bed boiler system provided with external heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097487 CN203099790U (en) | 2013-03-04 | 2013-03-04 | 600 MW supercritical circulating fluid bed boiler system provided with external heat exchanger |
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| CN203099790U true CN203099790U (en) | 2013-07-31 |
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| CN 201320097487 Expired - Fee Related CN203099790U (en) | 2013-03-04 | 2013-03-04 | 600 MW supercritical circulating fluid bed boiler system provided with external heat exchanger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266183A (en) * | 2014-07-15 | 2015-01-07 | 神华集团有限责任公司 | Bed temperature control system and method for supercritical CFB (circulating fluid bed) boiler |
| CN104501142A (en) * | 2014-12-23 | 2015-04-08 | 哈尔滨锅炉厂有限责任公司 | Secondary re-heating device and re-heating method for circulating fluidized bed boiler |
| CN110425519A (en) * | 2019-07-31 | 2019-11-08 | 张家港市昇泰能源有限公司 | A kind of furfural dregs fluidized bed classification burning charcoal vapour joint production process |
-
2013
- 2013-03-04 CN CN 201320097487 patent/CN203099790U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266183A (en) * | 2014-07-15 | 2015-01-07 | 神华集团有限责任公司 | Bed temperature control system and method for supercritical CFB (circulating fluid bed) boiler |
| CN104501142A (en) * | 2014-12-23 | 2015-04-08 | 哈尔滨锅炉厂有限责任公司 | Secondary re-heating device and re-heating method for circulating fluidized bed boiler |
| CN110425519A (en) * | 2019-07-31 | 2019-11-08 | 张家港市昇泰能源有限公司 | A kind of furfural dregs fluidized bed classification burning charcoal vapour joint production process |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20190304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |