CN103244940B - A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles - Google Patents
A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles Download PDFInfo
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- CN103244940B CN103244940B CN201310127762.3A CN201310127762A CN103244940B CN 103244940 B CN103244940 B CN 103244940B CN 201310127762 A CN201310127762 A CN 201310127762A CN 103244940 B CN103244940 B CN 103244940B
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- 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
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Abstract
A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body, the platform of boiler body is provided with oxygen-eliminating device and boiler water-feeding device, boiler water-feeding device outlet is connected with oxygen-eliminating device, medium pressure steam system and steam vapour system is provided with in boiler body, boiler water-feeding device is supplied water to medium pressure steam system and steam vapour system by oxygen-eliminating device, present invention optimizes steam-water pipe technological process, heat-transfer surface is arranged and heat exchanger tube form, and echelon can utilize fume afterheat.
Description
Technical field
The present invention relates to a kind of boiler for device for generating power by waste heat, especially relate to a kind of band from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles.
Background technology
Steel and iron industry is AND ENERGY RESOURCES CONSUMPTION IN CHINA rich and influential family, accounts for 15% of national total energy consumption, in steel manufacture process, and the energy consumption of sintering circuit occupies the second, and in SINTERING PRODUCTION, heat sinter sensible heat accounts for more than 40% of overall heat consumption, and sintered, energy saving is very important.High efficiente callback utilizes sintering mine sensible heat to be the effective way improving steel and iron industry efficiency.Conventional belt or ring cold sintering machine cogeneration technology exist that waste heat parameter fluctuation is large, waste heat flue-gas temperature is on the low side, from inherent defects such as power consumption are high, by comparison, adopt sintering deposit stove refrigeration technique, not only can improve sintering deposit cooling quality, reduce cooling power consumption, and waste heat Gas Parameters is stable, temperature Gao Keda about 600 DEG C, more be conducive to sintering deposit heat recovery, therefore the cold sintering machine cogeneration technology of stove is the developing direction of sintering machine UTILIZATION OF VESIDUAL HEAT IN.
According to the feature of the cold process waste parameter of sintering deposit stove, research and develop a kind of efficient waste-heat boiler adapting to stove cold flue gas parameter, improve waste heat boiler efficiency and steam production to greatest extent, thus improve cogeneration ability, additional income rate, promote significant to the through engineering approaches of stove cold sintering machine cogeneration technology.
Summary of the invention
The object of the invention is to adapt to the cold process waste parameter of sintering deposit stove, improve the utilization ratio of waste heat, the waste heat discharged in sintering deposit cooling procedure is fully utilized, there is provided a kind of band from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, optimize steam-water pipe technological process, heat-transfer surface is arranged and heat exchanger tube form, and echelon can utilize fume afterheat.
The present invention is the deficiency solved the problems of the technologies described above, and the technical scheme adopted is:
A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body, the platform of boiler body is provided with oxygen-eliminating device and boiler water-feeding device, boiler water-feeding device outlet is connected with oxygen-eliminating device, be provided with medium pressure steam system and steam vapour system in boiler body, boiler water-feeding device is supplied water to medium pressure steam system and steam vapour system by oxygen-eliminating device;
Described medium pressure steam system comprises middle pressure feed pump, middle pressure economizer A, middle pressure economizer B, middle pressure drum, middle pressure evaporimeter, middle pressure superheater A, direct-contact desuperheater and middle pressure superheater B, water in the female pipe of described oxygen-eliminating device is by after middle pressure feed pump, flow through middle pressure economizer A successively and middle pressure economizer B enters middle pressure drum, water in middle pressure drum returns middle pressure drum after pressing evaporimeter in therefrom pressing drum to flow into, steam in middle pressure drum is therefrom pressed in drum and is flowed out, flow through middle pressure superheater A successively, direct-contact desuperheater and middle pressure superheater B, middle pressure superheater B utilizes device to be connected with middle pressure steam,
Described steam vapour system comprises low pressure feed water pump, low-pressure coal saver, low-pressure drum, low pressure evaporator and low-pressure superheater, water in the female pipe of described oxygen-eliminating device is by after low pressure feed water pump, water flows through low-pressure coal saver, enter in low-pressure drum, water in low-pressure drum returns low-pressure drum after low-pressure drum flows into low pressure evaporator, steam in low-pressure drum flows out from low-pressure drum, flows through low-pressure superheater, and low-pressure superheater and low-pressure steam utilize device to be connected;
Described middle pressure superheater B, middle pressure superheater A, middle pressure evaporimeter, low-pressure superheater, middle pressure economizer B, low pressure evaporator, middle pressure economizer A, low-pressure coal saver and hot water heat exchanger are arranged in order setting from boiler inlet to boiler export in boiler body inside.
The admission end of described oxygen-eliminating device is connected with low-pressure superheater.
Described boiler water-feeding device, comprises water supply installation and hot water heat exchanger, and water supply installation is by being connected on oxygen-eliminating device after hot water heat exchanger.
Described direct-contact desuperheater import is connected with water supply installation, and outlet exports with middle pressure superheater A and is connected.
Described oxygen-eliminating device adopts atmosphere-type thermodynamic oxygen remover.
Described boiler adopts vertical structure.
Described middle pressure superheater B, middle pressure superheater A, middle pressure evaporimeter, low-pressure superheater, middle pressure economizer B, low pressure evaporator, middle pressure economizer A, low-pressure coal saver and hot water heat exchanger all employing spiral fin coils.
The invention has the beneficial effects as follows: 1, adopt dual pressure system, middle pressure steam has higher generating capacity, compared with the low-pressure steam produced with conventional sintering machine waste heat boiler, generating capacity improves 15% ~ 20%.Low-pressure system can make exhaust gas temperature be down to about 100 DEG C, and waste heat boiler efficiency can reach about 80%; 2, middle pressure steam adopts spray desuperheating control system, when entering the smoke temperature change of waste heat boiler, produces middle pressure steam temperature kept stable, is conducive to the safe and stable operation of afterheat generating system; 3, optimize heat-transfer surface in waste heat boiler to arrange and pipe material, reduce the heat exchange difference between flue gas and carbonated drink, add boiler duty; 4, waste heat boiler adopts atmosphere-type thermodynamic oxygen remover, and deaerating effect is stablized, and effectively can reduce the oxygen corrosion in boiler heat exchange face, improves boiler service life; Oxygen-eliminating device is arranged on boiler platform, and the low-pressure superheated steam that waste heat boiler produces replaces extracted steam from turbine to be used for deoxygenation, not only optimizes carbonated drink flow process, and decreases extraction flow of steam, improve steam turbine power generation ability; 5, be designed with hot water heat-transfer surface in waste heat boiler, not only can reduce waste heat boiler exhaust gas temperature further, improve boiler efficiency, and the feed temperature entering oxygen-eliminating device can be improved, reduce oxygen-eliminating device and consume quantity of steam, more low-pressure steam enters steam turbine power generation, improves systems generate electricity amount.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Graphical indicia: 1, boiler inlet; 2, boiler export; 3, water supply installation; 4, hot water heat exchanger; 5, oxygen-eliminating device; 6, middle pressure feed pump; 7, low pressure feed water pump; 8, low-pressure coal saver; 9, middle pressure economizer A; 10, low pressure evaporator; 11, middle pressure economizer B; 12, low-pressure superheater; 13, middle pressure evaporimeter; 14, middle pressure superheater A; 15, middle pressure superheater B; 16, low-pressure steam utilizes device; 17, middle pressure steam utilizes device; 18, low-pressure drum; 19, middle pressure drum; 20, direct-contact desuperheater; 21, chemistry filled water mouth; 22, admission end; 23, boiler body.
Detailed description of the invention
Shown in figure, detailed description of the invention is as follows:
A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body 23, the platform of boiler body 23 is provided with oxygen-eliminating device 5 and boiler water-feeding device, boiler water-feeding device outlet is connected with oxygen-eliminating device 5, medium pressure steam system and steam vapour system is provided with in boiler body 23, boiler water-feeding device is supplied water to medium pressure steam system and steam vapour system by oxygen-eliminating device 5
Described medium pressure steam system comprises middle pressure feed pump 6, middle pressure economizer A9, middle pressure economizer B11, middle pressure drum 19, middle pressure evaporimeter 13, middle pressure superheater A14, direct-contact desuperheater 20 and middle pressure superheater B15, water in the described female pipe of oxygen-eliminating device 5 is by after middle pressure feed pump 6, flow through middle pressure economizer A9 successively and middle pressure economizer B11 enters middle pressure drum 19, water in middle pressure drum 19 returns middle pressure drum 19 after pressing evaporimeter 13 in therefrom pressing drum 19 to flow into, steam in middle pressure drum 19 is therefrom pressed in drum 19 and is flowed out, flow through middle pressure superheater A14 successively, direct-contact desuperheater 20 and middle pressure superheater B15, middle pressure superheater B15 utilizes device 17 to be connected with middle pressure steam,
Described steam vapour system comprises low pressure feed water pump 7, low-pressure coal saver 8, low-pressure drum 18, low pressure evaporator 10 and low-pressure superheater 12, water in the described female pipe of oxygen-eliminating device 5 is by after low pressure feed water pump 7, water flows through low-pressure coal saver 8 and enters in low-pressure drum 18, water in low-pressure drum 18 returns low-pressure drum 18 after low-pressure drum 18 flows into low pressure evaporator 10, steam in low-pressure drum 18 flows out from low-pressure drum 18, flow through low-pressure superheater 12, low-pressure superheater 12 and low-pressure steam utilize device 16 to be connected;
Described middle pressure superheater B15, middle pressure superheater A14, middle pressure evaporimeter 13, low-pressure superheater 12, middle pressure economizer B11, low pressure evaporator 10, middle pressure economizer A9, low-pressure coal saver 8 and hot water heat exchanger 4 are arranged in order setting in boiler body 23 inside from boiler inlet 1 to boiler export 2.
The admission end 22 of described oxygen-eliminating device 5 is connected with low-pressure superheater 12.
Described boiler water-feeding device, comprises water supply installation 3 and hot water heat exchanger 4, and water supply installation 3 is by being connected on oxygen-eliminating device 5 after hot water heat exchanger 4.
Described direct-contact desuperheater 20 import is connected with water supply installation 3, and outlet exports with middle pressure superheater A14 and is connected.
Described oxygen-eliminating device 5 adopts atmosphere-type thermodynamic oxygen remover.
Described boiler 23 adopts vertical structure.
Described middle pressure superheater B15, middle pressure superheater A14, middle pressure evaporimeter 13, low-pressure superheater 12, middle pressure economizer B11, low pressure evaporator 10, middle pressure economizer A9, low-pressure coal saver 8 and hot water heat exchanger 4 all adopt spiral fin coil.
First water supply installation 3 enters in hot water heat exchanger 4 and absorbs heat, temperature is increased to the deoxygenation head that about 90 DEG C enter oxygen-eliminating device 5, electric power station system chemistry filled water 21 also enters the deoxygenation head of oxygen-eliminating device 5, steam 22 needed for oxygen-eliminating device 5 deoxygenation comes from low-pressure superheater 12 and exports, and removes the oxygen in boiler water-feeding device and chemistry filled water 21 in oxygen-eliminating device 5.
Water in the female pipe of oxygen-eliminating device, after low pressure feed water pump 7 pressurizes, enter low-pressure coal saver 8 tentatively heat, low-pressure coal saver 8 water out enters low-pressure drum 19, saturation water in low-pressure drum 19 becomes steam water interface after entering low pressure evaporator 10 heat absorption and is back to low-pressure drum 19, saturated vapor in low-pressure drum 19 becomes low-pressure superheated steam after low-pressure superheater 12 heats, a part is outer for low-pressure steam 16, oxygen-eliminating device vapour 22.
Water in the female pipe of oxygen-eliminating device, through in press feed pump 6 pressurize after enter middle pressure economizer A9 successively, middle pressure economizer B11 heats, middle pressure economizer B11 water out enters middle pressure drum 19, saturation water in middle pressure drum becomes steam water interface after entering the heat absorption of middle pressure evaporimeter 13 and is back to middle pressure drum 19, saturated vapor in middle pressure drum 19 presses superheater A14 to heat in first passing through, direct-contact desuperheater 20 is for pressing the outlet steam temperature of superheater A14 in regulating, water spray used comes from boiler feedwater 3, steam after spray desuperheating enters middle pressure superheater B15 and heats, vapours 17 externally steam supply is pressed through in becoming.
Technical scheme cited by the present invention and embodiment be not restriction, be equal to the technical scheme cited by the present invention and embodiment or effect same approach all in the scope that the present invention protects.
Claims (7)
1. a band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body (23), the platform of boiler body (23) is provided with oxygen-eliminating device (5) and boiler water-feeding device, boiler water-feeding device outlet is connected with oxygen-eliminating device (5), it is characterized in that: boiler body is provided with medium pressure steam system and steam vapour system in (23), boiler water-feeding device is supplied water to medium pressure steam system and steam vapour system by oxygen-eliminating device (5)
Described medium pressure steam system comprises middle pressure feed pump (6), middle pressure economizer A(9), middle pressure economizer B(11), middle pressure drum (19), middle pressure evaporimeter (13), middle pressure superheater A(14), direct-contact desuperheater (20) and middle pressure superheater B(15), water in described oxygen-eliminating device (5) female pipe is by after middle pressure feed pump (6), flow through middle pressure economizer A(9 successively) and middle pressure economizer B(11) enter middle pressure drum (19), after water presses evaporimeter (13) to return middle pressure drum (19) in therefrom pressing drum (19) to flow into, water is therefrom pressed in drum (19) and is flowed out, flow through middle pressure superheater A(14 successively), direct-contact desuperheater (20) and middle pressure superheater B(15), middle pressure superheater B(15) utilize device (17) to be connected with middle pressure steam,
Described steam vapour system comprises low pressure feed water pump (7), low-pressure coal saver (8), low-pressure drum (18), low pressure evaporator (10) and low-pressure superheater (12), water in described oxygen-eliminating device (5) female pipe is by after low pressure feed water pump (7), water flows through low-pressure coal saver (8) and passes in low-pressure drum (18), water in low-pressure drum (18) flows through after low pressure evaporator (10) returns low-pressure drum (18), water flows out from low-pressure drum (18), flow through low-pressure superheater (12), low-pressure superheater (12) and low-pressure steam utilize device (16) to be connected,
Described middle pressure superheater B(15), middle pressure superheater A(14), middle pressure evaporimeter (13), low-pressure superheater (12), middle pressure economizer B(11), low pressure evaporator (10), middle pressure economizer A(9), low-pressure coal saver (8) and hot water heat exchanger (4) be arranged in order setting from boiler inlet (1) to boiler export (2) in boiler body (23) inside.
2. a kind of band according to claim 1 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: the inlet end (22) of described oxygen-eliminating device (5) is connected with low-pressure superheater (12).
3. a kind of band according to claim 1 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: described boiler water-feeding device, comprise water supply installation (3) and hot water heat exchanger (4), water supply installation (3) is by being connected on oxygen-eliminating device (5) after hot water heat exchanger (4).
4. a kind of band according to claim 1 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: described direct-contact desuperheater (20) import is connected with water supply installation (3), direct-contact desuperheater (20) import and middle pressure superheater A(14) be connected.
5. a kind of band according to claim 1 and 2 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: described oxygen-eliminating device (5) adopts atmosphere-type thermodynamic oxygen remover.
6. a kind of band according to claim 1 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: described boiler body (23) adopts vertical structure.
7. a kind of band according to claim 1 is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles, it is characterized in that: described middle pressure superheater B(15), middle pressure superheater A(14), middle pressure evaporimeter (13), low-pressure superheater (12), middle pressure economizer B(11), low pressure evaporator (10), middle pressure economizer A(9), low-pressure coal saver (8) and hot water heat exchanger (4) all adopt spiral fin coil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127762.3A CN103244940B (en) | 2013-04-15 | 2013-04-15 | A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles |
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| CN201310127762.3A CN103244940B (en) | 2013-04-15 | 2013-04-15 | A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles |
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| CN103244940A CN103244940A (en) | 2013-08-14 |
| CN103244940B true CN103244940B (en) | 2015-12-30 |
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| CN104990062B (en) * | 2015-06-19 | 2017-03-01 | 焦武军 | A kind of boiler energy-saving method and energy saver |
| CN107166351A (en) * | 2017-06-27 | 2017-09-15 | 四川东华锅炉工程技术有限公司 | A kind of heat recovery boiler device with vertical well gas flue structure |
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| CN101021305A (en) * | 2007-03-20 | 2007-08-22 | 盐城市锅炉制造有限公司 | Sinter cooler low temperature waste gas residual heat boiler and power generating system thereof |
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| EP0777036A1 (en) * | 1995-11-28 | 1997-06-04 | Asea Brown Boveri Ag | Chemical operation of a water-steam cycle |
| CN2711669Y (en) * | 2004-08-06 | 2005-07-20 | 鞍山绿冶热能工程技术有限公司 | Fin pipe type waste heat boiler for recovering waste heat of sintering cooling-machine |
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Inventor after: Peng Yan Inventor after: Liu Huailiang Inventor after: Shi Xiaobao Inventor after: Wei Xiaolin Inventor after: Fan Dongyan Inventor after: Zhao Songxi Inventor after: Liu Suting Inventor after: Pan Lisheng Inventor after: Li Bo Inventor before: Peng Yan Inventor before: Liu Huailiang Inventor before: Shi Xiaobao Inventor before: Fan Dongyan Inventor before: Zhao Songxi Inventor before: Liu Suting Inventor before: Di Zenggao Inventor before: Zhang Han |
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Free format text: CORRECT: INVENTOR; FROM: PENG YAN LIU HUAILIANG SHI XIAOBAO FAN DONGYAN ZHAO SONGXI LIU SUTING ZHAIZENGGAO ZHANG HAN TO: PENG YAN LIU HUAILIANG SHI XIAOBAO WEI XIAOLIN FAN DONGYAN ZHAO SONGXI LIU SUTING PAN LISHENG LI BO |
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