CN205156013U - Oxygen boosting combustion system - Google Patents
Oxygen boosting combustion system Download PDFInfo
- Publication number
- CN205156013U CN205156013U CN201520910123.9U CN201520910123U CN205156013U CN 205156013 U CN205156013 U CN 205156013U CN 201520910123 U CN201520910123 U CN 201520910123U CN 205156013 U CN205156013 U CN 205156013U
- Authority
- CN
- China
- Prior art keywords
- control valve
- air
- cooling air
- heat exchanger
- probe
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 23
- 239000001301 oxygen Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 84
- 239000000523 sample Substances 0.000 claims abstract description 51
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 8
- 238000007710 freezing Methods 0.000 abstract 2
- 230000008014 freezing Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000005619 thermoelectricity Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
The utility model discloses an oxygen boosting combustion system, including burning purifier and circulation flue gas cooling device, burning purifier includes boiler body, air heater, electric precipitation system, draught fan, first governing valve, second governing valve, third governing valve, desulfurization system and chimney, circulation flue gas cooling device includes fourth governing valve, one -level heat exchanger, roots's fan, second grade heat exchanger and the 5th governing valve, and the 5th governing valve passes through export pipeline and the female union coupling of cooling air, the female pipe of cooling air with see fiery probe connection, the female pipe by freezing wind branch pipe of cooling air with probe connection is examined to the fire, the female pipe by freezing tuber pipe way of cooling air is connected with cooling blower. The utility model discloses can satisfy that flame detects, the cooling air requirement of flame TV, under the prerequisite of the safe operation of guaranteeing relevant equipment, can the oxygen boosting burn keep the flue gas under the operating mode in CO2 concentration, do benefit to and subsequently catch, seal up for safekeeping and utilize.
Description
Technical field
The utility model belongs to field of boilers, more specifically, relates to a kind of oxygen-enriched combustion system.
Background technology
Boiler oxygen-enriched combustion technology is the pure O will produced by air-seperation system (ASU)
2replace air to send into burner hearth after mixing with certain proportion with flue gas recycled and make fuel combustion or combustion-supporting mode.NO in coal combustion end-product
xconstructive ways mainly contain three kinds: heating power type, fuel type, Quick-type, wherein heating power type is by the N in air
2at high temperature be oxidized and the NO generated
x.Owing to not containing the N in traditional combustion mode in furnace atmosphere field
2, the therefore final NO generated
xremarkable minimizing; Meanwhile, flue gas recirculation is adopted to carry out transfer the fuel and combustion-supporting, the CO after burning in flue gas
2concentration is high, is convenient to CO
2trap, utilize and seal up for safekeeping.
Fire defector and burner hearth see that thermoelectricity view apparatus is the key equipment of power boiler burning equipment Furnace Safeguard Supervisory System (FSSS).Flame detecting probe is arranged on burner usually, for monitoring fuel oil, coal-fired combustion position; See that thermoelectricity is depending on being that one will see that fire probe inserts burner hearth inside from furnace wall, monitors the color ITV surveillance of full furnace combustion state, also title spy furnace flame televimonitor.Fire defector and under seeing that fire probe is in the adverse circumstances of high temperature, high ash, cooling air effectively can reduce flame detecting probe and see the temperature of fire probe, protection flame detecting probe and see that fire probe is not burnt out by high temperature; Meanwhile, the dust stratification before the cooling air of certain blast can blow down flame detecting probe and see fire probe, thus obtain stable flare up fire.Therefore, cooling air system ensures fire defector and to see that fiery television equipment normally runs necessary, and suitable cooling air parameter comprises the pressure of cooling air, air quantity and wind-warm syndrome etc.
At present, the tradition fire inspection type of cooling cools with station-service compressed air substantially.Compressed air system generally adopts air as source of the gas, is transported to each gas unit, as pneumatic operated valve, cooling air system etc. after air is pressurized.But for oxygen-enriched combustion boiler, cooling air system using air as cooling medium, when carrying out purging and cooling operations, will inevitably by the N in air
2be mixed into burner hearth, cause thermal NO in flue gas
xcontent raises, CO in flue gas
2concentration reduces, and directly affects the enrichment of carbon dioxide in flue gas.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of oxygen-enriched combustion system, under being applicable to meet oxygen-enriched combusting condition, boiler flame detects and sees that thermoelectricity looks the demand of cooling air, solve existing using compressed air as cooling air wind regime, when carrying out purging and cooling by the N in air
2bring burner hearth into and cause CO in flue gas
2concentration reduces and improves NO
xgrowing amount, or when blast, the air quantity allotment not equipment safety operation of the fiery inspection of impact at that time, even cause fire inspection malfunction, cause the accidents such as tripping operation.
For achieving the above object, according to the utility model, provide a kind of oxygen-enriched combustion system, it is characterized in that, comprise combustion purification device and circulating flue gas cooling device, wherein,
Described combustion purification device comprises boiler body, air preheater, electric dust removing system, air-introduced machine, first control valve, second control valve, 3rd control valve, desulphurization system and chimney, described boiler body is provided with the flame detecting probe seen fire probe and see fire probe below described in being positioned at, and described boiler body connects air preheater successively, electric dust removing system and air-introduced machine, the outlet of described air-introduced machine connects described first control valve and the 3rd control valve respectively, described first control valve connects described desulphurization system and described second control valve successively, described second control valve is all connected with described chimney by chimney air inlet pipe with the 3rd control valve,
Described circulating flue gas cooling device comprises the 4th control valve, first-class heat exchanger, roots blower, secondary heat exchanger and the 5th control valve, described 4th control valve is connected with described chimney air inlet pipe by circulating flue gas inlet duct, described 4th control valve connects described first-class heat exchanger successively, roots blower, secondary heat exchanger and the 5th control valve, described first-class heat exchanger is identical with secondary heat exchanger structure, described 5th control valve is connected by the female pipe of outlet conduit and cooling air, with described, described cooling air mother pipe sees that fiery probe is connected, the female pipe of described cooling air is connected with described flame detecting probe by cooling air arm,
The female pipe of described cooling air connects cooling blower by cooling air pipeline.
Preferably, described outlet conduit is also provided with the 5th control valve.
Preferably, the porch of described cooling blower is provided with atmospheric communicating pipe road, to be communicated with air, described atmospheric communicating pipe road is provided with the 6th control valve.
Preferably, described cooling air pipeline is provided with the 7th control valve.
Preferably, the female pipe of cooling air is provided with the 8th control valve, described in entering for adjustment, sees the air quantity in fire probe.
Preferably, the quantity of described flame detecting probe is two, two flame detecting probes are respectively the first probe and the second probe, correspondingly, the quantity of described cooling air fortune pipe is also two, and two cooling air arms are respectively the first arm and the second arm, described first arm is arranged the 9th control valve, described second arm is arranged the tenth control valve, described 9th control valve is for regulating the air quantity entered in the first probe, and described tenth control valve is for regulating the air quantity entering the second probe.
Preferably, enter the pressure of the flue gas in outlet conduit at more than 9.5Kpa, flow is at 30Nm
3/ more than min, temperature is below 30 DEG C.
Preferably, described first-class heat exchanger and secondary heat exchanger are shell-and-tube heat exchanger.
In general, the above technical scheme conceived by the utility model compared with prior art, can obtain following beneficial effect:
1) the utility model adopts circulating flue gas as fire inspection cooling air wind regime, utilize roots blower and first-class heat exchanger and secondary heat exchanger pressurize to it and cool, solve the fire inspection air quantity of cooling air, blast, wind-warm syndrome mis-arrange and threaten the safe operation of fiery inspection equipment; N is mixed under oxygen-enriched combusting operating mode
2dilution flue gas CO
2concentration, and cause NO
xthe problems such as increase;
2) the utility model can meet the cooling air requirement of fire defector, flame TV, under the prerequisite of safe operation ensureing relevant device, can maintain CO in flue gas under oxygen-enriched combusting operating mode
2concentration, is beneficial to and follow-up catches, seal up for safekeeping and utilization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
With reference to Fig. 1, a kind of oxygen-enriched combustion system, comprises combustion purification device and circulating flue gas cooling device, wherein,
Described combustion purification device comprises boiler body 3, air preheater 4, electric dust removing system 5, air-introduced machine 6, first control valve 19, second control valve 20, 3rd control valve 21, desulphurization system 7 and chimney 8, described boiler body 3 is provided with the flame detecting probe 2 seen fire probe 1 and see described in being positioned at below fire probe 1, and described boiler body 3 connects air preheater 4 successively, electric dust removing system 5 and air-introduced machine 6, the outlet of described air-introduced machine 6 connects described first control valve 19 and the 3rd control valve 21 respectively, described first control valve 19 connects described desulphurization system 7 and described second control valve 20 successively, described 3rd control valve 21 is connected with described chimney 8 by chimney 8 air inlet pipe, described second control valve 20 is connected with described chimney 8 by described chimney 8 air inlet pipe,
Described circulating flue gas cooling device comprises the 4th control valve 10, first-class heat exchanger 11, roots blower 12, secondary heat exchanger 13 and the 5th control valve 14, described 4th control valve 10 is connected with described chimney 8 air inlet pipe by circulating flue gas inlet duct 9, described 4th control valve 10 connects described first-class heat exchanger 11 successively, roots blower 12, secondary heat exchanger 13 and the 5th control valve 14, described first-class heat exchanger 11 is identical with secondary heat exchanger 13 structure, described 5th control valve 14 is connected by the female pipe 17 of outlet conduit 15 and cooling air, with described, the female pipe 17 of described cooling air sees that fiery probe 1 is connected, the female pipe 17 of described cooling air is connected with described flame detecting probe 2 by cooling air arm 18, preferably, described first-class heat exchanger 11 and secondary heat exchanger 13 are shell-and-tube heat exchanger.
The female pipe 17 of described cooling air is connected with cooling blower 16 by cooling air pipeline.
Further, described outlet conduit 15 is also provided with the 5th control valve 14, the porch of described cooling blower 16 is provided with atmospheric communicating pipe road, to be communicated with air, described atmospheric communicating pipe road is provided with the 6th control valve 22, described cooling air pipeline is provided with the 7th control valve 23, the female pipe 17 of cooling air is provided with the 8th control valve 24, the air quantity in fire probe 1 is seen described in entering for adjustment, the quantity of described flame detecting probe 2 is two, two flame detecting probes 2 are respectively the first probe and the second probe, described cooling air arm 18 is respectively arranged with the 9th control valve 25 and the tenth control valve 26, described 9th control valve 25 is for regulating the air quantity entered in the first probe, described tenth control valve 26 is for regulating the air quantity entering the second probe.
Further, enter the pressure of the flue gas in outlet conduit 15 at more than 9.5Kpa, flow is at 30Nm
3/ more than min, temperature is below 30 DEG C.
The utility model is significantly different from traditional oxygen-enriched combusting cooling air system, is to adopt circulating flue gas cooling system, is being exported to CO through flue gas purification system
2trap/seal up for safekeeping between system and draw circulating flue gas pipeline, flue gas as cooling air, is delivered to fire inspection cooling air system after the pressurization of circulating flue gas cooling system, cooling.
Coal dust and O
2when boiler body 1 combustion, produce the flue gas of a large amount of high temperature, high ash.Flue gas, after air preheater 4, is cooled to about 150 DEG C; After electric dust removing system 5, the flying dust of 90% ~ 99% can be removed; After flue gas purification system 7, slough the SO of more than 95%
xwith more than 80% NO
x; Finally by chimney discharged to air or be delivered to CO
2trap/seal up for safekeeping system.
During work, first opening cooling blower, allow cooling blower 16 normal operation, the 7th control valve 23 standard-sized sheet, regulating cooling air flow to be delivered to the air quantity of the female pipe of cooling air by regulating the 6th control valve 22.
Then, check that whether heat exchanger Pressure gauge, thermometer, liquid level gauge be intact, open discharge water valve and discharge ponding and dirt, open atmospheric valve and discharge air and fixed gas, input cooling water also maintains stability of flow.Then, check that the bolt of roots blower 12, nut connect degree of tightness situation, check reductor lubrication state, whether hand turning is observed flexible, and by the 4th control valve 10 complete shut-down, outlet regulating valve 14 standard-sized sheet, starts roots blower 12, keeps stable operation.Keep cooling air parameter at normal operation range: cooling air outlet pressure>=9.5KPa, flow>=30Nm
3/ min, under the condition of temperature≤30 DEG C, opens greatly gradually by the 4th control valve 10, circulating flue gas is pressurizeed, is delivered to the female pipe 17 of cooling air as cooling air after cooling.Coordinate simultaneously and turn down cooling blower porch the 6th control valve 22, until the 6th control valve 22 Close All, namely cooling air is all circulating flue gas, both ensured the normal operation seeing fire probe 1, flame detecting probe 2 under realizing oxygen-enriched combusting, burner hearth smoke components can not be caused because of the introducing of cooling medium again to change.Finally, close down cooling blower 16, and by air outlet slit the 7th control valve 23 complete shut-down, prevent circulating flue gas from pouring in down a chimney into cooling blower, affect device security.According to on-site actual situations, by regulating the aperture of the 8th control valve 24, the 9th control valve 25, the tenth control valve 26 etc. respectively, controlling the flow seeing fire probe 1 and flame detecting probe 2 cooling air, realizing the object ensureing that flame detection equipment normally runs.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. an oxygen-enriched combustion system, is characterized in that, comprises combustion purification device and circulating flue gas cooling device, wherein,
Described combustion purification device comprises boiler body, air preheater, electric dust removing system, air-introduced machine, first control valve, second control valve, 3rd control valve, desulphurization system and chimney, described boiler body is provided with the flame detecting probe seen fire probe and see fire probe below described in being positioned at, and described boiler body connects air preheater successively, electric dust removing system and air-introduced machine, the outlet of described air-introduced machine connects described first control valve and the 3rd control valve respectively, described first control valve connects described desulphurization system and described second control valve successively, described second control valve is all connected with described chimney by chimney air inlet pipe with the 3rd control valve,
Described circulating flue gas cooling device comprises the 4th control valve, first-class heat exchanger, roots blower, secondary heat exchanger and the 5th control valve, described 4th control valve is connected with described chimney air inlet pipe by circulating flue gas inlet duct, described 4th control valve connects described first-class heat exchanger successively, roots blower, secondary heat exchanger and the 5th control valve, described first-class heat exchanger is identical with secondary heat exchanger structure, described 5th control valve is connected by the female pipe of outlet conduit and cooling air, with described, described cooling air mother pipe sees that fiery probe is connected, the female pipe of described cooling air is connected with described flame detecting probe by cooling air arm,
The female pipe of described cooling air connects cooling blower by cooling air pipeline.
2. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, described outlet conduit is also provided with the 5th control valve.
3. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, the porch of described cooling blower is provided with atmospheric communicating pipe road, to be communicated with air, described atmospheric communicating pipe road is provided with the 6th control valve.
4. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, described cooling air pipeline is provided with the 7th control valve.
5. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, the female pipe of cooling air is provided with the 8th control valve, sees the air quantity in fire probe for adjustment described in entering.
6. a kind of oxygen-enriched combustion system according to claim 1, it is characterized in that, the quantity of described flame detecting probe is two, two flame detecting probes are respectively the first probe and the second probe, correspondingly, the quantity of described cooling air fortune pipe is also two, two cooling air arms are respectively the first arm and the second arm, described first arm is arranged the 9th control valve, described second arm is arranged the tenth control valve, described 9th control valve is for regulating the air quantity entered in the first probe, and described tenth control valve is for regulating the air quantity entering the second probe.
7. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, enter the pressure of the flue gas in outlet conduit at more than 9.5Kpa, flow is at 30Nm
3/ more than min, temperature is below 30 DEG C.
8. a kind of oxygen-enriched combustion system according to claim 1, is characterized in that, described first-class heat exchanger and secondary heat exchanger are shell-and-tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910123.9U CN205156013U (en) | 2015-11-16 | 2015-11-16 | Oxygen boosting combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910123.9U CN205156013U (en) | 2015-11-16 | 2015-11-16 | Oxygen boosting combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205156013U true CN205156013U (en) | 2016-04-13 |
Family
ID=55691701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520910123.9U Expired - Fee Related CN205156013U (en) | 2015-11-16 | 2015-11-16 | Oxygen boosting combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205156013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935740A (en) * | 2022-03-31 | 2022-08-23 | 华能上海石洞口发电有限责任公司 | Novel cooling of air preheater sector plate laser rangefinder probe device |
-
2015
- 2015-11-16 CN CN201520910123.9U patent/CN205156013U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935740A (en) * | 2022-03-31 | 2022-08-23 | 华能上海石洞口发电有限责任公司 | Novel cooling of air preheater sector plate laser rangefinder probe device |
| CN114935740B (en) * | 2022-03-31 | 2023-08-08 | 华能上海石洞口发电有限责任公司 | Novel cooling of air preheater sector plate laser rangefinder probe device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 |