CN106705108A - High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler - Google Patents
High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler Download PDFInfo
- Publication number
- CN106705108A CN106705108A CN201611242748.8A CN201611242748A CN106705108A CN 106705108 A CN106705108 A CN 106705108A CN 201611242748 A CN201611242748 A CN 201611242748A CN 106705108 A CN106705108 A CN 106705108A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- flue gas
- temperature flue
- enriched
- water
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/07001—Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes
-
- 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
- Y02E20/32—Direct CO2 mitigation
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a high-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler. The steam-injection boiler comprises an oxygen-enriched generation device, a combustion improver matching and preheating device, a boiler body, a radiation section, a convection section, a water feeding pump, a water mixer, a steam-water separator, a collecting header and a burner. The oxygen-enriched generation device is connected with the combustion improver matching and preheating device. The radiation section is arranged in an inner cavity of the boiler body. The convection section is arranged on the outer side of the boiler body. The water mixer communicates with the water feeding pump, the convection section and the collecting header. The steam-water separator communicates with the radiation section and the collecting header. The burner communicates with the boiler body and a gas mixing tank. The oxygen-enriched generation device is used for producing pure oxygen, a circulating fan is introduced to pump high-temperature flue gas from the tail portion of the boiler, the pure oxygen and the high-temperature flue gas are directly mixed in the gas mixing tank into an oxygen-enriched combustion improver with the oxygen concentration being higher than the concentration (larger than 21%) of conventional air to be fed into the boiler for supporting combustion, and accordingly fuel burning efficiency can be improved and pollutant emission concentration can be lowered.
Description
Technical field
The present invention relates to a kind of thickened oil recovery high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler.
Background technology
Uphole steam generator is one of key equipment of thickened oil recovery.The injection boiler of operation is in order to improve boiler hot at present
Efficiency, saves fuel, adopts various measures, and such as uses thermal insulation material, installs flue gas waste heat recovery apparatus additional, and fuel oil changes and combusts
Gas, change burning mode etc., wherein energy-saving effect are significantly to use oxygen-enriched combustion technology, and fractional energy savings is more than 4%.Oxygen-enriched
Under burning condition, flame temperature is raised, increased flame speeds, and complete combustibility is improved, the ignition temperature reduction of fuel, is burnt
Time shortens, and excess air coefficient reduction, exhaust gas volumn is reduced；But its greatest problem for existing is NOxConcentration of emission is higher.This master
If because：N in combustion adjuvant2Concentration reduction, causes thermal NOxGrowing amount reduction, but flame temperature raising and oxygen it is dense
The raising of degree can but increase thermal NOxGrowing amount, and NOxGather way and be higher than NOxReduction speed, final NOxRow
High-volume still increase.
Be conjointly employed in injection boiler for flue gas recirculation technology and oxygen-enriched combustion technology by imagination, will improve burning effect
Really, Fuel Consumption is saved, NO is reducedxDischarge, reaches the dual purpose that oilfield enterprise increases economic efficiency with energy-conserving and environment-protective.Cause
This, the technical barrier for solving is thirsted for as this area always.
The content of the invention
Present invention solves the technical problem that being to provide a kind of thickened oil recovery high-temperature flue gas oxygen admixing type oxygen-enriched combusting steam injection pot
Stove, the injection boiler can greatly improve boiler thermal output, and energy saving reduces NOxConcentration of emission.
The purpose of the present invention is achieved through the following technical solutions：
High-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler, including oxygen-enriched generating means, combustion adjuvant proportioning and preheating device, stove
Body, radiant section, convection section, feed pump, water-water jet, steam-water separator, collection header and burner；Described oxygen-enriched generating means and
Combustion adjuvant proportioning is connected with preheating device；Radiant section is arranged on body of heater inner chamber；Convection section is arranged on body of heater outside；Water-water jet is connected
Feed pump, convection section and collection header, steam-water separator connection radiant section and collection header, burner connection body of heater and mixed gas tank.
Described oxygen-enriched generating means is sequentially connected and is constituted by air blower, membrane type oxygen-enriched generator and pure oxygen storage tank.
Described combustion adjuvant proportioning is made up of with preheating device flue gas recirculation pipeline, mixed gas tank, circulating fan, mixes gas tank and leads to
Cross flue gas recirculation pipeline communication circulating fan.
Described combustion adjuvant proportioning is high-temperature flue gas and the gaseous mixture of oxygen with the combustion adjuvant in preheating device.
Oxygen concentration in described combustion adjuvant is controlled in 25%-40%.
Described convection section, steam-water separator and collection header are arranged in body of heater outside.
Described collection header is connected with blowoff valve.
Between described collection header and water-water jet check-valves is provided with saturation waterpipe VI.
The advantage of the invention is that：Extract a part of high-temperature flue gas of injection boiler afterbody（Flue-gas temperature is up to 1000 DEG C）With
Pure oxygen is mixed to form high-temperature oxygen-enriched combustion adjuvant, forms high-temperature oxygen-enriched combustion technology, is applied on injection boiler.High-temperature flue gas
Repeatedly after circulation, formed and be rich in CO2High-temperature flue gas.Quote and be rich in CO2High-temperature flue gas circulating technology overcomes oxygen-enriched combusting mode band
The NO high for comingxThe problem of concentration of emission, fuel availability than conventional injection boiler improve more than 15%, steam generating capacity improve 10% with
On, NO in flue gasxConcentration of emission reduce more than 50%.Using can be with variation, whether exotic fuels be also for fuel simultaneously
It is low calorie fuels, whether liquid fuel, gaseous fuel or solid fuel can apply this device.
Brief description of the drawings
Fig. 1 is the schematic diagram of high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler.
In figure：1 is air blower, and 2 is membrane type oxygen-enriched generator, and 3 is oxygen container, and 4 is mixed gas tank, and 5 is burner, and 6 is spoke
Section is penetrated, 7 is circulating fan, and 8 is convection section, and 9 is water-water jet, and 10 is feed pump, and 11 is steam-water separator, and 12 is collection header, 13
It is blowoff valve, 14 is check-valves, and 15 is pipeline I, and 16 is pipeline II, and 17 is pipeline III, and 18 is Fuel inlet pipe, and 19 is cigarette
Gas circulating line, 20 is low-temperature flue gas discharge line, and 21 is treated softening deaerated water with pressure, and 22 is pipeline IV, and 23 are
Pipeline V, 24 export for saturated vapor, and 25 is pipeline VI.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler of the present invention includes oxygen-enriched generating means, combustion adjuvant
Proportioning and preheating device, body of heater, radiant section, convection section, feed pump 10, water-water jet 9, steam-water separator 11, collection header 12 and combustion
Burner 5.Oxygen-enriched generating means is sequentially connected and is constituted by air blower 1, membrane type oxygen-enriched generator 2, pure oxygen storage tank 3；Combustion adjuvant is matched
It is made up of flue gas recirculation pipeline 19, mixed gas tank 4, circulating fan 7 with preheating device, mixed gas tank is followed by flue gas recirculation pipeline communication
Ring blower fan；Radiant section 6 is arranged on body of heater inner chamber；Convection section 8 is arranged on body of heater outside；Water-water jet 9 respectively with feed pump 10, convection current
Section 8 and collection header 12 connect, steam-water separator 11 respectively with radiant section 6 and collection header 12 connect, burner 5 respectively with body of heater and
Mixed gas tank 4 is connected.
Described combustion adjuvant proportioning is high-temperature flue gas and the gaseous mixture of oxygen with the combustion adjuvant in preheating device；Oxygen concentration
Control is in 25%-40%.
Described convection section 8, steam-water separator 11 and collection header 12 are arranged in body of heater outside；Described collection header is connected with
Blowoff valve 13；Check-valves 14 is provided between described collection header and water-water jet on saturation waterpipe VI.
The Water flow-path of boiler is：It is treated it is with pressure softening deaerated water 21 by feed pump 10 boosting after, into mixed water
Device 9, the convection section 8 of the boiler is entered by pipeline IV 22, is heated to be high-temperature water, is entered back into radiant section 6 and is heated as
Saturation moist steam, saturation moist steam carries out steam-water separation by pipeline V 23 through steam-water separator 11, and saturated vapor is by carbonated drink point
Saturated vapor outlet 24 from the top of device 11 is flowed out, and is injected underground by corresponding pipeline and is recovered the oil；Isolated by steam-water separator 11
Saturation water flowed out by the bottom saturation water outlet end of steam-water separator 11, set associative is entered by the top saturation water arrival end of collection header 12
Case 12, saturation water is flowed out by the saturation water outlet end of collection header 12, enters water-water jet 9 to the saturation water arrival end of water-water jet 9, with boiler
Feedwater mixing, improves boiler feed temperature；Collection header 12 bottom blow-down mouthful setting blowoff valve 13, when inorganic salts reach it is certain dense
Blowdown is carried out when spending；Check-valves 14 is set between collection header 12 and water-water jet 9 on saturation waterpipe VI 25, prevents saturation water from falling
Stream.
The flue gas flow of boiler is：After flue gas passes sequentially through the radiant section 6 of the boiler, a part of high-temperature flue gas are via following
Ring blower fan 7 flows into mixed gas tank 4 by flue gas recirculation pipeline 19 after being pressurized by the mixed smoke inlet end of gas tank 4；Remainder high temperature cigarette
Gas enters air after carrying out fume treatment by the discharge of low-temperature flue gas discharge line 20 via boiler convection section 8；Flue gas recirculation amount by
Adjustable circulating fan regulation, is adjusted according to oxygen concentration in combustion adjuvant.
The combustion adjuvant flow of boiler：Outside air is entered after air blower 1 is pressurized by the arrival end of membrane type oxygen-enriched generator 2
Enter membrane type oxygen-enriched generator 2 and produce pure oxygen, pure oxygen enters pure oxygen storage tank by the port of export flow ipe II16 of membrane type oxygen-enriched generator 2
3, with flue gas recirculation pipeline 19 flow into high-temperature flue gas carry out being mixed to form high-temperature oxygen-enriched combustion adjuvant, oxygen concentration in 25%-40%,
Finally by burner 5 and fuel mixed combustion in body of heater.
Be combined together for flue gas recirculation technology and oxygen-enriched combustion technology by the present invention, forms high-temperature oxygen-enriched burning, pure oxygen by
Membrane type oxygen-enriched generator is produced, and is directly mixed into higher than oxygen concentration in regular air using high-temperature flue gas and pure oxygen（>21%）'s
Burner is sent into after high-temperature oxygen-enriched combustion adjuvant, mixed combustion is carried out with fuel, realize high-temperature oxygen-enriched burning.It is right that the technology can be realized
Without interruption high-temperature oxygen-enriched combustion adjuvant in injection boiler, it is ensured that the stability of furnace flame, flue gas is formed after repeatedly circulating
Rich in CO2High-temperature flue gas, solve the NO high that high-temperature oxygen-enriched combustion technology is broughtxConcentration of emission problem.Meanwhile, water-water jet reality
The saturation water now isolated by steam-water separator mixes with the direct of boiler feedwater, improves the temperature of boiler feedwater.
The present invention is square with section, and the length of side is 230 mm, and the vertical furnace chamber of 1000 mm high is experimental furnace, and fuel is
Natural gas carries out research and shows：During conventional flue gas recirculation, the CO in stove in circulation flue gas2Increase with vapor share, N2
Share reduction；It is pure CO in initial cycle2When, CO in stove2Share reduction, vapor and N2Share increases；Flue gas recirculation 10 times with
When upper, various component shares tend to a stationary value in both flue gases, and the share of both same compositions is of substantially equal, only nitrogen
There is deviation in content；This also causes both in NOxDifference in concentration.As a example by when oxygen concentration 25%, followed using two kinds of flue gases
After ring, the former is NOxConcentration ratio the latter reduces by 10% or so less.It follows which kind of endless form no matter used, flue gas will be into
It is rich in CO2High-temperature flue gas, NO is most greatly reduced at lastxConcentration of emission.Therefore oxygen-enriched combustion can be solved with flue gas recirculation technology
The NO high that burning is broughtxEmission problem.
The above is specific embodiment of the invention and the know-why used, any based on technical solution of the present invention
On the basis of equivalent transformation, belong within protection scope of the present invention.
Claims (8)
1. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler, it is characterised in that including oxygen-enriched generating means, combustion adjuvant proportioning with
Preheating device, body of heater, radiant section, convection section, feed pump, water-water jet, steam-water separator, collection header and burner；Described richness
Oxygengenerating plant and combustion adjuvant proportioning are connected with preheating device；Radiant section is arranged on body of heater inner chamber；Convection section is arranged on outside body of heater
Side；Water-water jet connection feed pump, convection section and collection header, steam-water separator connection radiant section and collection header, burner connection stove
Body and mixed gas tank.
2. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described is oxygen-enriched
Generating means is sequentially connected and is constituted by air blower, membrane type oxygen-enriched generator and pure oxygen storage tank.
3. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described is combustion-supporting
Agent proportioning is made up of with preheating device flue gas recirculation pipeline, mixed gas tank, circulating fan, mixes gas tank and passes through flue gas recirculation pipeline communication
Circulating fan.
4. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described is combustion-supporting
Agent proportioning is high-temperature flue gas and the gaseous mixture of oxygen with the combustion adjuvant in preheating device.
5. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 4, it is characterised in that described is combustion-supporting
Oxygen concentration in agent is controlled in 25%-40%.
6. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described convection current
Section, steam-water separator and collection header are arranged in body of heater outside.
7. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described set associative
Case is connected with blowoff valve.
8. high-temperature flue gas oxygen admixing type oxygen-enriched combusting injection boiler according to claim 1, it is characterised in that described set associative
Between case and water-water jet check-valves is provided with saturation waterpipe VI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242748.8A CN106705108A (en) | 2016-12-29 | 2016-12-29 | High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242748.8A CN106705108A (en) | 2016-12-29 | 2016-12-29 | High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705108A true CN106705108A (en) | 2017-05-24 |
Family
ID=58905989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611242748.8A Pending CN106705108A (en) | 2016-12-29 | 2016-12-29 | High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803739A (en) * | 2020-06-15 | 2021-12-17 | 中国石油化工股份有限公司 | Fuel low-nitrogen combustion system for steam injection boiler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343989A (en) * | 2008-08-22 | 2009-01-14 | 新疆石油管理局机械制造总公司 | High-dryness oil field steam-injection boiler and high-dryness steam production method |
| JP2011141075A (en) * | 2010-01-07 | 2011-07-21 | Babcock Hitachi Kk | Oxygen combustion power-generating plant and method of operating the same |
| CN102431974A (en) * | 2011-09-23 | 2012-05-02 | 山东大学 | Oxygen-enriched combustion poly-generation process and equipment for steam injection boiler in oil field |
| CN102635852A (en) * | 2012-05-02 | 2012-08-15 | 中国科学院工程热物理研究所 | Fuel oil/gas boiler for reducing emission of nitric oxides and method |
| CN104266175A (en) * | 2014-09-30 | 2015-01-07 | 张宏伟 | Superheating boiler superheating steam desalting device for oil field steam injection and utilization method thereof |
| CN105222123A (en) * | 2015-11-10 | 2016-01-06 | 辽宁石油化工大学 | A kind of high-temperature oxygen-enriched formula overheat steam injection boiler |
| CN105423333A (en) * | 2015-11-10 | 2016-03-23 | 辽宁石油化工大学 | High-temperature oxygen-enrichment type steam-injection boiler |
-
2016
- 2016-12-29 CN CN201611242748.8A patent/CN106705108A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343989A (en) * | 2008-08-22 | 2009-01-14 | 新疆石油管理局机械制造总公司 | High-dryness oil field steam-injection boiler and high-dryness steam production method |
| JP2011141075A (en) * | 2010-01-07 | 2011-07-21 | Babcock Hitachi Kk | Oxygen combustion power-generating plant and method of operating the same |
| CN102431974A (en) * | 2011-09-23 | 2012-05-02 | 山东大学 | Oxygen-enriched combustion poly-generation process and equipment for steam injection boiler in oil field |
| CN102635852A (en) * | 2012-05-02 | 2012-08-15 | 中国科学院工程热物理研究所 | Fuel oil/gas boiler for reducing emission of nitric oxides and method |
| CN104266175A (en) * | 2014-09-30 | 2015-01-07 | 张宏伟 | Superheating boiler superheating steam desalting device for oil field steam injection and utilization method thereof |
| CN105222123A (en) * | 2015-11-10 | 2016-01-06 | 辽宁石油化工大学 | A kind of high-temperature oxygen-enriched formula overheat steam injection boiler |
| CN105423333A (en) * | 2015-11-10 | 2016-03-23 | 辽宁石油化工大学 | High-temperature oxygen-enrichment type steam-injection boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803739A (en) * | 2020-06-15 | 2021-12-17 | 中国石油化工股份有限公司 | Fuel low-nitrogen combustion system for steam injection boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104141952B (en) | Extremely low concentration coal mine gas combustion device and method | |
| CN105222123A (en) | A kind of high-temperature oxygen-enriched formula overheat steam injection boiler | |
| CN105042557A (en) | Multi-return-stroke gas-steam boiler | |
| CN112413571A (en) | Comprehensive utilization system of natural gas boiler and operation method thereof | |
| CN205717142U (en) | Biomass double furnace thorax gas-steam boiler and combustion system thereof | |
| CN106705108A (en) | High-temperature flue gas oxygen-doped type oxygen-enriched combustion steam-injection boiler | |
| CN105423333A (en) | High-temperature oxygen-enrichment type steam-injection boiler | |
| CN107152672A (en) | Low NOXDouble drum gas fired-boilers | |
| CN101002053A (en) | Method and apparatus for generating water vapour adapted to oxycombustion | |
| CN106838937A (en) | A kind of formaldehyde exhaust combustion and heat recovery system and its operating method | |
| CN110043883A (en) | A kind of biogas steam generator | |
| CN206037389U (en) | Gas water heater | |
| CN205388316U (en) | Steam boiler waste heat utilization system | |
| CN209540885U (en) | A kind of warm and humid coupling gas fired-boiler low nitrogen burning system | |
| CN113250738A (en) | Low-concentration gas utilization system and use method thereof | |
| CN103398397A (en) | Combustion system of boiler and combustion method implemented by aid of system | |
| CN206846679U (en) | The double drum gas fired-boilers of low NOX | |
| CN206222340U (en) | A kind of formaldehyde exhaust combustion and heat recovery system | |
| AU2004325009A1 (en) | Device and method for boiler superheat temperature control | |
| CN106705109A (en) | High-temperature flue gas oxygen-doped type superheated steam injection boiler | |
| CN106288861B (en) | A kind of Cryogenic air discharge gas heat riser and technique | |
| CN109579008A (en) | The warm and humid coupling gas fired-boiler low nitrogen burning system of one kind and operation method | |
| CN206398686U (en) | Biomass direct-combustion boiler | |
| CN206073757U (en) | A kind of Cryogenic air discharges gas heat riser | |
| CN204214131U (en) | A kind of boiler taking heating surface segmentation backwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |