CN203258631U - Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system - Google Patents
Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system Download PDFInfo
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- CN203258631U CN203258631U CN2013201852391U CN201320185239U CN203258631U CN 203258631 U CN203258631 U CN 203258631U CN 2013201852391 U CN2013201852391 U CN 2013201852391U CN 201320185239 U CN201320185239 U CN 201320185239U CN 203258631 U CN203258631 U CN 203258631U
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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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- Y02P10/25—Process efficiency
Abstract
A medium-temperature medium-pressure dual-pressure heat recovery boiler with a self-deoxygenizing system comprises a boiler body, a platform of the boiler body is provided with a deaerator and a boiler water feeding device, and the outlet of the boiler water feeding device is connected to the deaerator. The medium-temperature medium-pressure dual-pressure heat recovery boiler is further provided with a medium-pressure steam system and a low-pressure steam system. The medium-temperature medium-pressure dual-pressure heat recovery boiler optimizes a steam and water pipe technological process, heat exchange surface distribution and a heat exchange tube type, and can gradually utilize waste heat of fume.
Description
Technical field
The utility model relates to a kind of boiler for device for generating power by waste heat, especially relates to a kind of band from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles.
Background technology
Steel and iron industry is the AND ENERGY RESOURCES CONSUMPTION IN CHINA rich and influential family, accounts for 15% of national total energy consumption, and in the steel manufacture process, the energy consumption of sintering circuit occupies the second, and the heat sinter sensible heat accounts for more than 40% of overall heat consumption in the SINTERING PRODUCTION, and sintered, energy saving is very important.It is the effective way that improves the steel and iron industry efficiency that high efficiente callback utilizes sintering mine sensible heat.Conventional belt or encircle cold sintering machine cogeneration technology have that the waste heat parameter fluctuation is large, the waste heat flue-gas temperature is on the low side, from inherent defects such as power consumption height, by comparison, adopt sintering deposit stove refrigeration technique, not only can improve sintering deposit cooling quality, reduce the cooling power consumption, and the waste heat Gas Parameters is stable, about temperature Gao Keda ℃, more be conducive to the sintering deposit heat recovery, so the cold sintering machine cogeneration technology of the stove developing direction that is the sintering machine UTILIZATION OF VESIDUAL HEAT IN.
Characteristics according to the cold process waste parameter of sintering deposit stove, research and develop a kind of efficient waste-heat boiler that adapts to stove cold flue gas parameter, improve to greatest extent waste heat boiler efficient and steam production, thereby improve cogeneration ability, additional income rate, promote significant to the through engineering approaches of the cold sintering machine cogeneration technology of stove.
The utility model content
The purpose of this utility model is in order to adapt to the cold process waste parameter of sintering deposit stove, improve the utilization ratio of waste heat, the waste heat that discharges in the sintering deposit cooling procedure is fully utilized, provide a kind of band from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, optimize steam-water pipe technological process, heat-transfer surface layout and heat exchanger tube form, and can echelon utilize fume afterheat.
The utility model is the deficiency that solves the problems of the technologies described above, and the technical scheme that adopts is:
A kind of band is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body, platform at boiler body is provided with oxygen-eliminating device and boiler water-feeding device, the boiler water-feeding device outlet is connected with oxygen-eliminating device, be provided with medium pressure steam system and steam vapour system in the boiler body, boiler water-feeding device supplies 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, after the female Guan Yuzhong of described oxygen-eliminating device presses feed pump to connect, middle pressure feed pump, middle pressure economizer A, middle pressure economizer B be connected the pressure drum and connect successively, middle pressure drum is connected with middle pressure evaporimeter head end, middle pressure evaporimeter is terminal to be connected with middle pressure drum, middle pressure drum, middle pressure superheater A, direct-contact desuperheater be connected pressure superheater B and connect successively, middle pressure superheater B is connected with the middle pressure steam use device;
Described steam vapour system comprises low pressure feed water pump, low-pressure coal saver, low-pressure drum, low pressure evaporator and low-pressure superheater, the female pipe of described oxygen-eliminating device connects in the low pressure feed water pump, low pressure feed water pump, low-pressure coal saver low-pressure drum connect successively, low-pressure drum connects in the low pressure evaporator head end, low pressure evaporator is terminal to be connected with low-pressure drum, and low-pressure drum is connected with the low-pressure steam use device by low-pressure superheater;
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 in boiler body inside from boiler inlet to boiler export.
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 connected on the oxygen-eliminating device after by hot water heat exchanger.
Described direct-contact desuperheater is connected with water supply installation.
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 be the employing spiral fin coil all.
The beneficial effects of the utility model are: 1, adopt dual pressure system, middle pressure steam has higher generating capacity, compares with the low-pressure steam that conventional sintering machine waste heat boiler produces, and generating capacity improves 15% ~ 20%.Low-pressure system can make exhaust gas temperature be down to about 100 ℃, and waste heat boiler efficient can reach about 80%; 2, middle pressure steam adopts the 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 layout and pipe material in the waste heat boiler, reduced the heat exchange difference between flue gas and carbonated drink, increased boiler duty; 4, waste heat boiler adopts atmosphere-type thermodynamic oxygen remover, and deaerating effect is stable, can effectively reduce the oxygen corrosion of boiler heat exchange face, improves boiler service life; Oxygen-eliminating device is arranged on the boiler platform, and the low-pressure superheated steam that waste heat boiler produces replaces extracted steam from turbine to be used for deoxygenation, has not only optimized the carbonated drink flow process, and has reduced the extracted steam from turbine amount, has improved the steam turbine power generation ability; 5, be designed with the hot water heat-transfer surface in the waste heat boiler, not only can further reduce the waste heat boiler exhaust gas temperature, improve boiler efficiency, and can improve the feed temperature that enters oxygen-eliminating device, reduce oxygen-eliminating device and consume quantity of steam, more low-pressure steam enters steam turbine power generation, has improved system's generated energy.
Description of drawings
Fig. 1 is structural representation of the present utility model.
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 use device; 17, middle pressure steam use device; 18, low-pressure drum; 19, middle pressure drum; 20, direct-contact desuperheater; 21, chemistry filled water mouth; 22, admission end; 23, boiler body.
The specific embodiment
Shown in the figure, the specific embodiment is as follows:
A kind of band is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body 23, platform at boiler body 23 is provided with oxygen-eliminating device 5 and boiler water-feeding device, connection is connected in boiler water-feeding device outlet with oxygen-eliminating device, be provided with medium pressure steam system and steam vapour system in the boiler body 23, boiler water-feeding device supplies 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 described oxygen-eliminating device 5 female pipes by middle pressure feed pump 6 after, flow through successively middle pressure economizer A9 and middle pressure economizer B11 enters middle pressure drum 19, water in the middle pressure drum 19 returns middle pressure drum 19 after therefrom pressing and pressing evaporimeter 13 in drum 19 inflows, steam in the middle pressure drum 19 is therefrom pressed in the drum 19 and is flowed out, flow through successively middle pressure superheater A14, direct-contact desuperheater 20 and middle pressure superheater B15, middle pressure superheater B15 is connected with middle pressure steam use device 17;
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 pipes is by behind the low pressure feed water pump 7, water flows through low-pressure coal saver 8 and enters in the low-pressure drum 18, water in the low-pressure drum 18 returns low-pressure drum 18 after low-pressure drum 18 flows into low pressure evaporator 10, steam in the low-pressure drum 18 flows out from low-pressure drum 18, flow through low-pressure superheater 12, low-pressure superheater 12 is connected with low-pressure steam use device 16;
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 connected on the oxygen-eliminating device 5 after by hot water heat exchanger 4.
Described direct-contact desuperheater 20 imports are connected with water supply installation 3, and outlet is connected with middle pressure superheater A14 outlet.
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.
Water supply installation 3 at first enters heat absorption in the hot water heat exchanger 4, temperature is increased to the deoxygenation head that enters oxygen-eliminating device 5 about 90 ℃, electric power station system chemistry filled water 21 also enters the deoxygenation head of oxygen-eliminating device 5, the required steam 22 of oxygen-eliminating device 5 deoxygenations comes from low-pressure superheater 12 outlets, removes the oxygen in boiler water-feeding device and the chemistry filled water 21 in oxygen-eliminating device 5.
Water in the female pipe of oxygen-eliminating device, entering low-pressure coal saver 8 after 7 pressurizations of low pressure feed water pump tentatively heats, low-pressure coal saver 8 water out enters low-pressure drum 19, saturation water in the low-pressure drum 19 enters and becomes steam water interface after low pressure evaporator 10 heat absorption and be back to low-pressure drum 19, saturated vapor in the low-pressure drum 19 becomes low-pressure superheated steam after heating through low-pressure superheater 12, a part is outer for 16, one oxygen-eliminating devices of low-pressure steam vapour 22.
Water in the female pipe of oxygen-eliminating device, through in enter successively middle pressure economizer A9 after pressing feed pump 6 pressurizations, middle pressure economizer B11 heating, middle pressure economizer B11 water out enters middle pressure drum 19, saturation water in the middle pressure drum enters and becomes steam water interface after 13 heat absorptions of middle pressure evaporimeter and be back to middle pressure drum 19, saturated vapor in the middle pressure drum 19 at first presses superheater A14 to heat in the process, direct-contact desuperheater 20 is used for regulating the outlet steam temperature of pressing superheater A14, used water spray comes from boiler feedwater 3, steam behind the spray desuperheating enters middle pressure superheater B15 and heats, and becomes middle pressure superheated steam 17 external steam supplies.
The technical scheme that the utility model is cited and embodiment are not to be restriction, with the cited technical scheme of the utility model and embodiment is equal to or the effect same approach all in the scope that the utility model is protected.
Claims (7)
1. a band is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, be provided with boiler body (23), platform at boiler body (23) is provided with oxygen-eliminating device (5) and boiler water-feeding device, the boiler water-feeding device outlet is connected 5 with oxygen-eliminating device) connect, it is characterized in that: boiler body is provided with medium pressure steam system and steam vapour system in (23), boiler water-feeding device supplies 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), after the female Guan Yuzhong of described oxygen-eliminating device (5) presses feed pump (6) to connect, middle pressure feed pump (6), middle pressure economizer A(9), middle pressure economizer B(11) be connected pressure drum (19) and connect successively, middle pressure drum (19) is connected with middle pressure evaporimeter (13) head end, middle pressure evaporimeter (13) is terminal to be connected with middle pressure drum (19), middle pressure drum (19), middle pressure superheater A(14), direct-contact desuperheater (20) be connected pressure superheater B(15) connect successively middle pressure superheater B(15) be connected with middle pressure steam use device (17);
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), the female pipe of described oxygen-eliminating device (5) connects in low pressure feed water pump (7), low pressure feed water pump (7), low-pressure coal saver (8) low-pressure drum (18) connects successively, low-pressure drum (18) connects in low pressure evaporator (10) head end, low pressure evaporator (10) is terminal to be connected with low-pressure drum (18), and low-pressure drum (18) is connected with low-pressure steam use device (16) by low-pressure superheater (12);
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 that boiler body (23) is inner.
2. a kind of band according to claim 1 is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, and 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 boilers 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 connected on the oxygen-eliminating device (5) after by hot water heat exchanger (4).
4. a kind of band according to claim 1 is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, and it is characterized in that: described direct-contact desuperheater (20) is connected with water supply installation (3).
5. a kind of band according to claim 1 and 2 is from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles, and 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 boilers of the medium temperature and medium pressure of deaerating type of cycles, and it is characterized in that: described boiler (23) adopts vertical structure.
7. a kind of band according to claim 1 is characterized in that from the two pressure waste heat boilers of the medium temperature and medium pressure of deaerating type of cycles: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201852391U CN203258631U (en) | 2013-04-15 | 2013-04-15 | Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201852391U CN203258631U (en) | 2013-04-15 | 2013-04-15 | Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system |
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| Publication Number | Publication Date |
|---|---|
| CN203258631U true CN203258631U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201852391U Withdrawn - After Issue CN203258631U (en) | 2013-04-15 | 2013-04-15 | Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system |
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| Country | Link |
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| CN (1) | CN203258631U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244940A (en) * | 2013-04-15 | 2013-08-14 | 中信重工机械股份有限公司 | Medium-temperature medium-pressure double-pressure residual heat boiler with self-deoxidation system |
| CN105180663A (en) * | 2015-06-29 | 2015-12-23 | 南京海陆化工科技有限公司 | Dual-pressure self-deoxygenization coal gasification waste heat recovery system |
| CN108253405A (en) * | 2018-02-28 | 2018-07-06 | 中国华电科工集团有限公司 | A kind of afterheat boiler system with vacuum dust cather |
-
2013
- 2013-04-15 CN CN2013201852391U patent/CN203258631U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244940A (en) * | 2013-04-15 | 2013-08-14 | 中信重工机械股份有限公司 | Medium-temperature medium-pressure double-pressure residual heat boiler with self-deoxidation system |
| CN103244940B (en) * | 2013-04-15 | 2015-12-30 | 中信重工机械股份有限公司 | A kind of band is from the two pressure waste heat boiler of the medium temperature and medium pressure of deaerating type of cycles |
| CN105180663A (en) * | 2015-06-29 | 2015-12-23 | 南京海陆化工科技有限公司 | Dual-pressure self-deoxygenization coal gasification waste heat recovery system |
| CN108253405A (en) * | 2018-02-28 | 2018-07-06 | 中国华电科工集团有限公司 | A kind of afterheat boiler system with vacuum dust cather |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |