CN209604105U - Low-heat value gas superhigh temperature super-pressure backheat electricity generation system - Google Patents
Low-heat value gas superhigh temperature super-pressure backheat electricity generation system Download PDFInfo
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- CN209604105U CN209604105U CN201822276973.4U CN201822276973U CN209604105U CN 209604105 U CN209604105 U CN 209604105U CN 201822276973 U CN201822276973 U CN 201822276973U CN 209604105 U CN209604105 U CN 209604105U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model relates to coal gas technical field of power generation, in particular to a kind of low-heat value gas superhigh temperature super-pressure backheat electricity generation system, its mechanism includes boiler, steam turbine high-pressure cylinder, turbine low pressure cylinder, generator, condenser, shaft sealing cooler, first low-pressure heater, second low-pressure heater, third low-pressure heater, exhaust gas recovery device for deaerator, oxygen-eliminating device, first high-pressure heater, second high-pressure heater, compared with prior art, boiler overheating steam parameter (pressure and temperature) is improved, improve steam quality, improve generated energy, low-heat value gas waste heat is improved rationally effectively to utilize, reduce product cost, it reduces environmental pollution, improve the economic benefit and social benefit of manufacturing enterprise.
Description
Technical field
The utility model relates to coal gas technical field of power generation, in particular to a kind of low-heat value gas superhigh temperature super-pressure backheat
Electricity generation system.
Background technique
China's steel industry passes through the fast development of many years for many years, industry and technically has apparent progress and mentions
Height, steel industry will consume a large amount of energy every year, compared with the advanced western countries of other technologies, especially consume energy in ton steel
There are also the spaces for much needing to improve for aspect, and there are also very big gaps, although the enhancing of many industry energy conservation consciousness, is all utilizing
Low-heat value gas is recycled, but current coal gas is still very low using electricity generation system utilization, leads to energy utilization rate
It is not high, it causes excessive energy waste and causes corresponding environmental pollution.
Currently, the UTILIZATION OF VESIDUAL HEAT IN effectively integrated, such as low-heat value gas hair are not accomplished in existing low-heat value gas power generation
Electricity uses steam low or the electricity generation system of middle pressure steam or high voltage parameter, affects the Transform efficiency of the energy, indirectly wave
The efficient utilization of the low-pressure gas energy is taken.
Utility model content
The purpose of this utility model is that avoiding above-mentioned shortcoming in the prior art, it is higher to provide a kind of generated energy
Low-heat value gas superhigh temperature super-pressure backheat electricity generation system.
The purpose of this utility model is achieved through the following technical solutions: being provided a kind of low-heat value gas superhigh temperature superelevation and is pushed back
Heat generating system, it is characterised in that: including boiler, Turbo-generator Set, condenser, gland heater, the first low-pressure heater,
Second low-pressure heater, third low-pressure heater, oxygen-eliminating device, the first high-pressure heater, the second high-pressure heater, steam turbine generator
Group includes steam turbine high-pressure cylinder and turbine low pressure cylinder；
The steam (vapor) outlet a of boiler is connected to steam turbine high-pressure cylinder, the steam (vapor) outlet e of steam turbine high-pressure cylinder respectively with boiler
Steam inlet c and the connection of the first high-pressure heater, the steam (vapor) outlet g of steam turbine high-pressure cylinder and the connection of the second high-pressure heater, pot
The steam inlet c of furnace is connected to steam (vapor) outlet e, and the steam (vapor) outlet e of boiler is connected to turbine low pressure cylinder, Turbo-generator Set
One outlet is connected to condenser, and condenser, gland heater, the first low-pressure heater, the second low-pressure heater, third low pressure add
Hot device, oxygen-eliminating device are sequentially communicated, and oxygen-eliminating device is successively connect with the first high-pressure heater, the second high-pressure heater, and the second high pressure adds
Hot device is connected to the feed-water intake d of boiler；Turbo-generator Set second outlet is connected to the first low-pressure heater；Steam turbine generator
The outlet of group third is connected to the second low-pressure heater, and the outlet of Turbo-generator Set the 4th is connected to third low-pressure heater；Steamer
5th outlet of generating set is connected to oxygen-eliminating device, and the feedwater outlet of oxygen-eliminating device is connected to the first high-pressure heater.
It wherein, further include exhaust gas recovery device for deaerator, exhaust gas recovery device for deaerator is connected to oxygen-eliminating device circulation.
Wherein, boiler is connected to by condensate make-up piping with exhaust gas recovery device for deaerator.
Wherein, the valve of boiler is using compressed air as starting power source.
The utility model has the beneficial effects that the low-heat value gas superhigh temperature super-pressure backheat electricity generation system of the utility model
The course of work, water supply sequentially enter the first high-pressure heater, the second high-pressure heater and boiler after oxygen-eliminating device deoxygenation and carry out
Heating, is exchanged heat in the first high-pressure heater and the second high-pressure heater using the steam extraction of steam turbine high-pressure cylinder, after heating
Boiler heating is entered back into, the steam that the water supply after heating is enters steam turbine high-pressure cylinder, and steam does work in steam turbine high-pressure cylinder
After power generation, a portion carries out heating water supply for the first high-pressure heater and the second high-pressure heater, and another part is used for
Boiler carries out backheat, and the steam after backheat enters back into turbine low pressure cylinder and does work, and steam does work in turbine low pressure cylinder
Become steam exhaust afterwards and enter condenser sequentially entering shaft sealing cooler, the first low-pressure heating using the after cooling of circulation cooling water
Device, the second low-pressure heater and third low-pressure heater are heated, and are carried out deoxygenation subsequently into oxygen-eliminating device, are formed a closure
Water circulation system improve low-heat value gas waste heat compared with prior art and rationally effectively utilize, reduce product cost,
It reduces environmental pollution, improves the economic benefit and social benefit of manufacturing enterprise.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of low-heat value gas superhigh temperature super-pressure backheat electricity generation system described in the utility model.
It include: that boiler 1, steam turbine high-pressure cylinder 2, turbine low pressure cylinder 3, generator 4, condenser 5, axle envelope are cold in Fig. 1
But device 6, the first low-pressure heater 7, the second low-pressure heater 8, third low-pressure heater 9, exhaust gas recovery device for deaerator 10,
Oxygen-eliminating device 11, the first high-pressure heater 12, the second high-pressure heater 13.
Specific embodiment
Low-heat value gas superhigh temperature super-pressure backheat electricity generation system is further described with the following Examples.
The specific embodiment of a kind of low-heat value gas superhigh temperature super-pressure backheat electricity generation system of the application, such as Fig. 1 institute
Show, including boiler 1, Turbo-generator Set 4, condenser 5, gland heater 6, the first low-pressure heater 7, the second low-pressure heater
8, third low-pressure heater 9, oxygen-eliminating device 11, the first high-pressure heater 12, the second high-pressure heater 13, Turbo-generator Set 4 are wrapped
Include steam turbine high-pressure cylinder 2 and turbine low pressure cylinder 3.
It is that the steam (vapor) outlet a of boiler 1 is connected to steam turbine high-pressure cylinder 2, the steam of steam turbine high-pressure cylinder 2 as improved
Outlet e be connected to respectively with the steam inlet c of boiler 1 and the first high-pressure heater 12, the steam (vapor) outlet g of steam turbine high-pressure cylinder 2 with
The connection of second high-pressure heater 13, the steam inlet c of boiler 1 are connected to steam (vapor) outlet e, the steam (vapor) outlet e and steam turbine of boiler 1
Low pressure (LP) cylinder 3 is connected to, and 4 first outlet 4a of Turbo-generator Set is connected to condenser 5, condenser 5, gland heater 6, the first low pressure
Heater 7, the second low-pressure heater 8, third low-pressure heater 9, oxygen-eliminating device 11 are sequentially communicated, and oxygen-eliminating device 11 is successively with first
High-pressure heater 12, the connection of the second high-pressure heater 13, the second high-pressure heater 13 are connected to the feed-water intake d of boiler 1；Steamer
4 second outlet 4b of generating set is connected to the first low-pressure heater 7；4 third of Turbo-generator Set outlet 4c adds with the second low pressure
Hot device 8 is connected to, and Turbo-generator Set 4 the 4th exports 4d and is connected to third low-pressure heater 9；The 5th of Turbo-generator Set 4 goes out
Mouth 4e is connected to oxygen-eliminating device 11, and the feedwater outlet of oxygen-eliminating device 11 is connected to the first high-pressure heater 12.
The low-heat value gas superhigh temperature super-pressure backheat electricity generation system of the present embodiment further includes exhaust gas recovery device for deaerator
10, exhaust gas recovery device for deaerator 10 is connected to the circulation of oxygen-eliminating device 11, and boiler 1 is recycled by condensate make-up piping and deaerator exhaust
Device 10 is connected to, specifically, the moisturizing of boiler 1 passes through the circulatory system that oxygen-eliminating device 11 is entirely closed using demineralized water, is mended
Before water-filling enters oxygen-eliminating device 11, added first with the steam discharge of oxygen-eliminating device 11 by 10 pairs of supplement water of exhaust gas recovery device for deaerator
Heat is recycled using the steam discharge of oxygen-eliminating device 11 and is heated to the supplement water of boiler 1, reduced oxygen-eliminating device 11 and supplement steam, into one
Step improves generated energy.
In the present embodiment, the valve of boiler 1 using compressed air as starting power source, effect be reduce operation at
This.
Oxygen-eliminating device is passed through in the course of work of the low-heat value gas superhigh temperature super-pressure backheat electricity generation system of the present embodiment, water supply
The first high-pressure heater 12, the second high-pressure heater 13 and boiler 1 are sequentially entered after 11 deoxygenations to be heated, and are added in the first high pressure
It is exchanged heat in hot device 12 and the second high-pressure heater 13 using the steam extraction of steam turbine high-pressure cylinder 2, the water supply after heating enters pot
Furnace becomes steam and enters steam turbine high-pressure cylinder 2, and steam is done work in steam turbine high-pressure cylinder 2 after power generation, a portion of steam
Heating water supply is carried out for the first high-pressure heater 12 and the second high-pressure heater 13, another part carries out backheat for boiler 1,
Steam after backheat enters back into turbine low pressure cylinder 3 and does work, steam become after doing work in turbine low pressure cylinder 3 steam exhaust into
Entering condenser 5, to sequentially enter shaft sealing cooler 6, the first low-pressure heater 7, second low using circulation cooling water after cooling
Pressure heater 8 and third low-pressure heater 9 are heated, and are carried out deoxygenation subsequently into oxygen-eliminating device 11, are formed the water of a closure
The circulatory system improves low-heat value gas waste heat and rationally effectively utilizes compared with prior art, reduces product cost, reduces
Environmental pollution improves the economic benefit and social benefit of manufacturing enterprise.
It is efficiently remaining to improve low-heat value gas power generation for the low-heat value gas superhigh temperature super-pressure backheat electricity generation system of the present embodiment
Recuperation of heat utilizes, and improves superheated steam parameter, final to improve low-heat value gas electricity generation system generated energy, and utilizes thermal deaerator
Steam discharge boiler water-filling is heated, reduce oxygen-eliminating device and supplement steam, improve generated energy, improve the economic effect of enterprise
Benefit and competitive advantage, reduce environmental pollution, achieve the effect that energy saving raising social benefit.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than to this reality
With the limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be with the technical solution of the present invention is modified or equivalently replaced, without departing from this
The spirit and scope of utility model technical solution.
Claims (4)
1. low-heat value gas superhigh temperature super-pressure backheat electricity generation system, it is characterised in that: including boiler (1), Turbo-generator Set
(4), condenser (5), gland heater (6), the first low-pressure heater (7), the second low-pressure heater (8), third low-pressure heating
Device (9), oxygen-eliminating device (11), the first high-pressure heater (12), the second high-pressure heater (13), Turbo-generator Set (4) includes vapour
Turbine high pressure cylinder (2) and turbine low pressure cylinder (3)；
The steam (vapor) outlet a of boiler (1) is connected to steam turbine high-pressure cylinder (2), the steam (vapor) outlet e of steam turbine high-pressure cylinder (2) respectively with
The steam inlet c and the first high-pressure heater (12) of boiler (1) are connected to, and the steam (vapor) outlet g and second of steam turbine high-pressure cylinder (2) is high
Heater (13) connection is pressed, the steam inlet c of boiler (1) is connected to steam (vapor) outlet e, the steam (vapor) outlet e and steam turbine of boiler (1)
Low pressure (LP) cylinder (3) connection, Turbo-generator Set (4) first outlet (4a) are connected to condenser (5), condenser (5), gland heater
(6), the first low-pressure heater (7), the second low-pressure heater (8), third low-pressure heater (9), oxygen-eliminating device (11) are sequentially communicated,
Oxygen-eliminating device (11) is successively connect with the first high-pressure heater (12), the second high-pressure heater (13), the second high-pressure heater (13)
It is connected to the feed-water intake d of boiler (1)；Turbo-generator Set (4) second outlet (4b) is connected to the first low-pressure heater (7)；
Turbo-generator Set (4) third outlet (4c) is connected to the second low-pressure heater (8), and Turbo-generator Set (4) the 4th exports
(4d) is connected to third low-pressure heater (9)；5th outlet (4e) of Turbo-generator Set (4) is connected to oxygen-eliminating device (11), is removed
The feedwater outlet of oxygen device (11) is connected to the first high-pressure heater (12).
2. low-heat value gas superhigh temperature super-pressure backheat electricity generation system according to claim 1, it is characterised in that: further include
Exhaust gas recovery device for deaerator (10), exhaust gas recovery device for deaerator (10) are connected to oxygen-eliminating device (11) circulation.
3. low-heat value gas superhigh temperature super-pressure backheat electricity generation system according to claim 1, it is characterised in that: boiler
(1) it is connected to by condensate make-up piping with exhaust gas recovery device for deaerator (10).
4. low-heat value gas superhigh temperature super-pressure backheat electricity generation system according to claim 1, it is characterised in that: boiler
(1) valve is using compressed air as starting power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276973.4U CN209604105U (en) | 2018-12-29 | 2018-12-29 | Low-heat value gas superhigh temperature super-pressure backheat electricity generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276973.4U CN209604105U (en) | 2018-12-29 | 2018-12-29 | Low-heat value gas superhigh temperature super-pressure backheat electricity generation system |
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| CN209604105U true CN209604105U (en) | 2019-11-08 |
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| CN201822276973.4U Active CN209604105U (en) | 2018-12-29 | 2018-12-29 | Low-heat value gas superhigh temperature super-pressure backheat electricity generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469520A (en) * | 2018-12-29 | 2019-03-15 | 广东东实开能能源有限公司 | Low-heat value gas superhigh temperature super-pressure backheat electricity generation system |
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2018
- 2018-12-29 CN CN201822276973.4U patent/CN209604105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469520A (en) * | 2018-12-29 | 2019-03-15 | 广东东实开能能源有限公司 | Low-heat value gas superhigh temperature super-pressure backheat electricity generation system |
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