MD4270B1 - Power plant for burning fuel and process for recycling smoke gases for fuel burning therein - Google Patents
Power plant for burning fuel and process for recycling smoke gases for fuel burning therein Download PDFInfo
- Publication number
- MD4270B1 MD4270B1 MDA20130035A MD20130035A MD4270B1 MD 4270 B1 MD4270 B1 MD 4270B1 MD A20130035 A MDA20130035 A MD A20130035A MD 20130035 A MD20130035 A MD 20130035A MD 4270 B1 MD4270 B1 MD 4270B1
- Authority
- MD
- Moldova
- Prior art keywords
- smoke
- duct
- gases
- burning
- fuel
- Prior art date
Links
- 239000000779 smoke Substances 0.000 title abstract 19
- 239000007789 gas Substances 0.000 title abstract 17
- 239000000446 fuel Substances 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 3
- 238000004064 recycling Methods 0.000 title abstract 3
- 239000003570 air Substances 0.000 abstract 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 229910052760 oxygen Inorganic materials 0.000 abstract 3
- 239000001301 oxygen Substances 0.000 abstract 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 2
- 230000003068 static effect Effects 0.000 abstract 2
- 239000012080 ambient air Substances 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011874 heated mixture Substances 0.000 abstract 1
- 239000008240 homogeneous mixture Substances 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2202/00—Fluegas recirculation
- F23C2202/50—Control of recirculation rate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention relates to heat power engineering, particularly to power plants for burning various types of fuel and to processes for recycling smoke gases for fuel burning in power plants.The power plant for burning fuel comprises a furnace (1) with burners (2) and a convective flue duct (3), connected through a smoke exhauster (4) and a smoke duct (5) to a smokestack (6); an outer air duct (9) connected to the smoke duct (5) through a smoke gas bypass conduit (11) and an outer air and smoke gas mixture duct (14), which is connected to a blow fan (13); a throttle (10) mounted on the duct (9), and a valve (12) mounted on the smoke gas bypass conduit (11), the throttle (10) and the valve (12) being equipped with actuators; an air preheater (8) placed in the convective flue duct (3), connected to the blow fan (13) and joined with the burners (2 ) through a heated outer air and smoke gas mixture duct (15); a smoke gas sampling transducer (16), mounted at the inlet into the convective flue duct (3) and connected to a gas analyzer (17) determining the content of oxygen and carbon monoxide in the smoke gases; an electronic control unit (18), which is connected to the gas analyzer (17) and to the actuators of the throttle (10) and the valve (12).The process for recycling smoke gases for fuel burning in power plants includes the selection of a part of flue gases with static pressure greater than the atmospheric pressure from a smoke duct (5) and feeding it through a smoke gas bypass conduit (11) into an outer air duct (9) with the outer air static pressure less than the atmospheric pressure; regulation of fresh air and smoke gas feeding through the actuators of a throttle (10) and a valve (12), controlled by an electronic control unit (18), so that the percentage content of oxygen in the ambient air may be reduced to a level, at which at the inlet into a convective flue duct (3) the oxygen content in the smoke gases may be less than 1% in the absence of carbon monoxide; subsequent mixing of smoke gases with the outer air in an air duct (14) and a blow fan (13) to obtain a homogeneous mixture of outer air and smoke gases; heating of the resulting mixture in an air preheater (8) by utilizing the heat of smoke gases; feeding of the heated mixture into burners (2) through a duct (15).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20130035A MD4270C1 (en) | 2013-06-06 | 2013-06-06 | Power plant for burning fuel and process for recycling smoke gases for fuel burning therein |
| EA201592208A EA030025B1 (en) | 2013-06-06 | 2014-05-30 | Method of operating a boiler unit and boiler unit |
| PCT/MD2014/000001 WO2014196848A1 (en) | 2013-06-06 | 2014-05-30 | Method of operating a boiler unit and the boiler unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20130035A MD4270C1 (en) | 2013-06-06 | 2013-06-06 | Power plant for burning fuel and process for recycling smoke gases for fuel burning therein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD4270B1 true MD4270B1 (en) | 2014-01-31 |
| MD4270C1 MD4270C1 (en) | 2014-08-31 |
Family
ID=50071902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDA20130035A MD4270C1 (en) | 2013-06-06 | 2013-06-06 | Power plant for burning fuel and process for recycling smoke gases for fuel burning therein |
Country Status (3)
| Country | Link |
|---|---|
| EA (1) | EA030025B1 (en) |
| MD (1) | MD4270C1 (en) |
| WO (1) | WO2014196848A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU175713U1 (en) * | 2016-12-07 | 2017-12-15 | Общество с ограниченной ответственностью "Газ-Проект Инжиниринг" ООО "Газ-Проект Инжиниринг" - Российская Федерация | RECOVERY INSTALLATION |
| CN116139670A (en) * | 2022-12-12 | 2023-05-23 | 华能苏州热电有限责任公司 | A temperature control method and equipment for a denitrification reaction zone |
| CN118795089B (en) * | 2024-06-27 | 2025-11-21 | 马鞍山钢铁股份有限公司 | Method for measuring and calculating oxygen content in combustion air |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU846924A1 (en) * | 1979-03-06 | 1981-07-15 | Сибирский Филиал Всесоюзного Дважды Орденатрудового Красного Знамени Теплотехничес-Кого Научно-Исследовательного Институтаим. Ф.Э.Дзержинского | Boiler unit operation method |
| SU987287A1 (en) * | 1981-09-23 | 1983-01-07 | За витель f i / f | Boiler |
| US4355601A (en) * | 1981-09-25 | 1982-10-26 | Conoco Inc. | Recirculating flue gas fluidized bed heater |
| JPS5974408A (en) * | 1982-10-22 | 1984-04-26 | Babcock Hitachi Kk | Combustion device |
| US5002484A (en) * | 1988-03-25 | 1991-03-26 | Shell Western E&P Inc. | Method and system for flue gas recirculation |
| JPH02101302A (en) * | 1988-10-05 | 1990-04-13 | Ishikawajima Harima Heavy Ind Co Ltd | Control method for nox in flue gas |
| US5461853A (en) * | 1994-11-30 | 1995-10-31 | The Babcock & Wilcox Company | HRSG boiler design with air staging and gas reburn |
| US6200128B1 (en) * | 1997-06-09 | 2001-03-13 | Praxair Technology, Inc. | Method and apparatus for recovering sensible heat from a hot exhaust gas |
| RU2136930C1 (en) * | 1997-11-19 | 1999-09-10 | Ферд Максим Лейбович | Gas-turbine plant operating process |
| US20090158978A1 (en) * | 2007-12-20 | 2009-06-25 | Foster Wheeler Energy Corporation | Method of controlling a process of generating power by oxyfuel combustion |
| US8728423B2 (en) * | 2008-04-07 | 2014-05-20 | Mitsubishi Heavy Industries, Ltd. | Method and apparatus for flue gas treatment |
-
2013
- 2013-06-06 MD MDA20130035A patent/MD4270C1/en active IP Right Grant
-
2014
- 2014-05-30 WO PCT/MD2014/000001 patent/WO2014196848A1/en not_active Ceased
- 2014-05-30 EA EA201592208A patent/EA030025B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MD4270C1 (en) | 2014-08-31 |
| WO2014196848A1 (en) | 2014-12-11 |
| EA201592208A1 (en) | 2016-04-29 |
| EA030025B1 (en) | 2018-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG4A | Patent for invention issued |