CN207178037U - A kind of HTHP cycle generating system based on useless remaining coal gas - Google Patents
A kind of HTHP cycle generating system based on useless remaining coal gas Download PDFInfo
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- CN207178037U CN207178037U CN201721062650.4U CN201721062650U CN207178037U CN 207178037 U CN207178037 U CN 207178037U CN 201721062650 U CN201721062650 U CN 201721062650U CN 207178037 U CN207178037 U CN 207178037U
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Abstract
The utility model discloses a kind of HTHP cycle generating system based on useless remaining coal gas, including boiler, once overheat component, double reheat component, filling system and return water system；Once overheat component includes superheater and the first Steam Turbine, and superheater connects the first Steam Turbine；Double reheat component includes reheater and the second Steam Turbine, the exhaust steam import of the exhaust steam outlet connection reheater of the first steam turbine, and reheater is connected with the second steam turbine；Filling system includes vapour source, quick-closing valve and direct-operated regulator, and vapour source passes sequentially through quick-closing valve and the second steam turbine is connected with direct-operated regulator；Return water system includes condenser and water pump, and condenser connects the exhaust steam outlet of the second steam turbine, and condenser connects boiler by water pump.The utility model is fully converted to electric energy by setting double reheat component and filling system in the boiler, by the energy in the useless remaining coal gas and saturated vapor of steel plant, improves the overall generating efficiency of useless remaining gas generating system.
Description
It the utility model is related to electricity generation system technical field, more particularly to a kind of HTHP circulation based on useless remaining coal gas
Electricity generation system.
Background technology
Iron and steel enterprise can produce substantial amounts of coal gas, such as blast furnace gas, coke-stove gas and coal gas of converter in process of production,
Remove the useless remaining coal gas that the personal part of iron and steel enterprise's production is outer, still there is about 34%.At present, under the Times ' Demand of energy-saving and emission-reduction,
The useless remaining coal gas in the part is converted into electric energy main flow.At present, boiler, overheat are included successively using the electricity generation system of useless remaining coal gas
Device, Turbo-generator Set, condenser and water pump, wherein, Turbo-generator Set includes steam turbine and generator, the combustions such as remaining coal gas of giving up
After material burns in boiler, steam is produced by superheater, steam enters pushing turbine rotation acting in steam turbine, and passes through
Steam turbine drives generator to be generated electricity, and the exhaust steam after steam turbine acting, which is discharged into condenser, condenses into water, the water in condenser
Boiler, which is reentered, by feed pump produces steam.In existing useless remaining gas generating system, due to its small scale, steam parameter
Low, energy utilization rate is low, and overall generating efficiency is no more than 30%.
Utility model content
The purpose of this utility model is to provide a kind of HTHP cycle generating system based on useless remaining coal gas, can be lifted
The overall generating efficiency of the electricity generation system of existing useless remaining coal gas.
The technical solution adopted in the utility model is：
A kind of HTHP cycle generating system based on useless remaining coal gas, including boiler, once overheat component, double reheat
Component, filling system and return water system；Described boiler includes body of heater and the flue being arranged above body of heater；
Described once overheat component includes superheater and the first Steam Turbine, and the first described Steam Turbine includes first
Steam turbine, decelerator and the first generator, the power output shaft of the first steam turbine connect the dynamic of the first generator by decelerator
Power input shaft, described superheater are arranged in the flue of boiler, the first steam turbine of superheated steam outlet connection of superheater
Superheated steam import；
Described double reheat component includes reheater and the second Steam Turbine, and the second described Steam Turbine includes second
Steam turbine and the second generator, the second described steam turbine are steam compensating turbine, the power output shaft of the second steam turbine and
The power input shaft of two generators is coaxially connected, and described reheater is arranged in the flue of boiler, the exhaust steam import of reheater
It is connected with the exhaust steam outlet of the first steam turbine, the reheated steam outlet of reheater and the reheated steam import phase of the second steam turbine
Connection；
Described filling system includes vapour source, quick-closing valve and direct-operated regulator, and vapour source passes sequentially through quick-closing valve and relied on oneself
Formula regulating valve connects the filling import of the second steam turbine；
Described return water system includes condenser and water pump, and the import of condenser connects the exhaust steam outlet of the second steam turbine,
The outlet of condenser connects the water inlet of boiler by water pump.
The line voltage of the first described generator is 10.5KV, and the line voltage of the second generator is 6.3KV.
The first described Steam Turbine is arranged on the furnace roof of boiler.
The rotating speed of the first described steam turbine is not less than 5000 revs/min.
The back pressure of the first described steam turbine is not less than 1.5MPa and is not more than 2.5MPa.
The first described steam turbine is reaction turbine.
The utility model by setting double reheat component in the boiler, and the reheater in double reheat component is directly by one
Caused exhaust steam is heated again in secondary reheating component, is converted into electric energy, greatly improves the profit of the energy in useless remaining coal gas
With rate, and by the filling system in double reheat component, the heat energy in caused saturated vapor in steel plant is converted into electricity
Can, so as to improve the overall generating efficiency of useless remaining gas generating system about 15%, realization is turned waste into wealth, a large amount of so as to save
The energy.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the present utility model easily.It should be clear that this specification accompanying drawing is painted
The structure shown, ratio, size etc., only to coordinate the content disclosed in specification, so that those skilled in the art understands
With reading, the enforceable qualifications of the utility model are not limited to, therefore do not have technical essential meaning, any structure
Modification, the change of proportionate relationship or the adjustment of size, do not influenceing the effect of the utility model can be generated and can reach
Purpose under, all should still fall in the range of the technology contents disclosed in the utility model are obtained and can covered.Meanwhile in this specification
The term of cited such as " on ", " under ", "left", "right", " centre " and " one ", is merely convenient to understanding for narration, rather than
To limit the enforceable scope of the utility model, its relativeness is altered or modified, in the case where changing technology contents without essence,
When being also considered as the enforceable category of the utility model.
As shown in figure 1, a kind of HTHP cycle generating system based on useless remaining coal gas, including boiler 1, once overheat group
Part, double reheat component, filling system 8 and return water system；Described boiler 1 includes body of heater 11 and is arranged at the top of body of heater 11
Flue 12；
Described once overheat component includes the Steam Turbine 3 of superheater 2 and first, and the first described Steam Turbine 3 includes
First steam turbine 31, the generator 33 of decelerator 32 and first, the first steam turbine 31 are reaction turbine.Reaction turbine energy
High conversion efficiency is measured, is advantageous to be lifted the generating efficiency of whole cycle generating system.The power output shaft of first steam turbine 31 leads to
The power input shaft that decelerator 32 connects the first generator 33 is crossed, described superheater 2 is arranged in the flue 12 of boiler 1, mistake
The superheated steam import of the first steam turbine 31 of superheated steam outlet connection of hot device 2.
In the present embodiment, the first described Steam Turbine 3 is arranged on the furnace roof of boiler 1, reduces overheated steam pipe
The length in road, so as to reduce because pipeline is long, superheated steam pressure is excessive and radiating is excessive causes energy loss, and saves
The metal consumption of superheat steam pipeline, saves investment, has saved the space for arranging pipeline.
The rotating speed of the first described steam turbine 31 is not less than 5000 revs/min, so as to ensure that the generating of the first steam turbine 31 is imitated
Rate.
The back pressure of the first described steam turbine 31 is not less than 1.5MPa and is not more than 2.5MPa, so as to ensure circulating generation system
The flowing of steam is unimpeded during the circulation of steam, particularly double reheat in system, so as to ensure whole cycle generating system
Generating efficiency.
Described double reheat component includes the Steam Turbine 5 of reheater 4 and second, and the second described Steam Turbine 5 includes
Second steam turbine 51 and the second generator 52, the second described steam turbine 51 are steam compensating turbine, and the second steam turbine 51 moves
The power input shaft of power output shaft and the second generator 52 is coaxially connected, and described reheater 4 is arranged at the flue 12 of boiler 1
In, the exhaust steam outlet of the exhaust steam import of reheater 4 and the first steam turbine 31 is connected, the reheated steam outlet of reheater 4 and the
The reheated steam import of two steam turbines 51 is connected.
The utility model by setting double reheat component in boiler 1, directly will by the reheater 4 in double reheat component
Caused exhaust steam is heated again in single reheat component, is converted into electric energy, compared to existing useless remaining gas generating system
In directly exhaust steam is liquefied, greatly improve the utilization rate of the energy in useless remaining coal gas.
Described filling system 8 includes vapour source 81, quick-closing valve 82 and direct-operated regulator 83, and vapour source 81 passes sequentially through fast pass
Valve 82 and direct-operated regulator 83 connect the filling import of the second steam turbine 51.
Heat energy in caused saturated vapor in steel plant is converted to electric energy by filling system 8, and saturated vapor is turned waste into wealth,
The overall generating efficiency of useless remaining gas generating system is further improved, so as to save mass energy.
Described return water system includes condenser 6 and water pump 7, and the import of condenser 6 connects the exhaust steam of the second steam turbine 51
Outlet, the outlet of condenser 6 connect the water inlet of boiler 1 by water pump 7.Exhaust steam is converted into aqueous water simultaneously using return water system
Reuse, so as to realize that water resource recycles, saved water resource.
The line voltage of the first described generator 33 is 10.5KV, and the line voltage of the second generator 52 is 6.3KV.Very
More iron and steel enterprises divide different times construction, and builtin voltage grade contains two grades of 10.5KV and 6.3K, the He of the first Steam Turbine 3
The electricity of second Steam Turbine 5 can be incorporated to different transformation stations, not avoid more than transformation station and expense gas generating system not
With the problem of, ensure the utility model caused by electric energy can be fairly distributed；It also avoid electric energy can not be by iron and steel enterprise certainly
Oneself consumes, and causes situation about being powered to external electrical network, and this is that power network institute is unallowable.
The course of work of the present utility model is as follows：
The useless remaining coal gas of steel plant's caused blast furnace gas, coke-stove gas and coal gas of converter etc. in steelmaking process, give up remaining coal
After gas burns in the body of heater 11 of boiler 1, the water in boiler 1 is heated as vapor, vapor passes through in the flue 12 of boiler 1
Superheater 2 turn into superheated steam, superheated steam, which enters, once to be overheated in component.Superheated steam promotes the first steam turbine 31 to do
Work(, the first steam turbine 31 drive the first generator 33 to generate electricity by decelerator 32.The exhaust steam discharged from the first steam turbine 31 is again
Reheater 4 in the secondary flue 12 into boiler 1, reheated steam is heated as by reheater 4, reheated steam enters double reheat
Component, reheated steam promote the second steam turbine 51 to do work, and the second steam turbine 51 drives the second generator 52 to generate electricity.Steel plant are refining
Many saturated vapors can be also produced during steel, these saturated vapour pressures about 0.35-0.8MPa, about 180-200 DEG C of temperature will
This fractional saturation steam is as vapour source 81, and into double reheat component, saturated vapor promotes the second steam turbine 51 to do work, the second vapour
Turbine 51 drives the second generator 52 to generate electricity；Quick-closing valve 82 can cut off the second steam turbine 51 immediately in the state of emergency and come from vapour
Vapour is entered in source 81, makes the quick shutdown of the second steam turbine 51, direct-operated regulator 83, can easily realize the second steam turbine 51
Dynamic equilibrium between vapour source 81；The debugging efforts of system can be greatly simplified；Working condition of pump etc. can be stablized.Second
Exhaust steam after the acting of steam turbine 51 is discharged into condenser 6 and condenses into water, is reentered by water pump 7 in boiler 1.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (5)
- A kind of 1. HTHP cycle generating system based on useless remaining coal gas, it is characterised in that：Including boiler, once overheat group Part, double reheat component, filling system and return water system；Described boiler includes body of heater and the flue being arranged above body of heater；Described once overheat component includes superheater and the first Steam Turbine, and the first described Steam Turbine includes the first steamer Machine, decelerator and the first generator, the power output shaft of the first steam turbine are defeated by the power of decelerator the first generator of connection Enter axle, described superheater is arranged in the flue of boiler, the overheat of the first steam turbine of superheated steam outlet connection of superheater Steam inlet；Described double reheat component includes reheater and the second Steam Turbine, and the second described Steam Turbine includes the second steamer Machine and the second generator, the second described steam turbine are steam compensating turbine, the power output shaft of the second steam turbine and the second hair The power input shaft of motor is coaxially connected, and described reheater is arranged in the flue of boiler, the exhaust steam import of reheater and the The exhaust steam outlet of one steam turbine is connected, and the reheated steam outlet of reheater is connected with the reheated steam import of the second steam turbine Connect；Described filling system includes vapour source, quick-closing valve and direct-operated regulator, and vapour source passes sequentially through quick-closing valve and self-operated type is adjusted Save the filling import that valve connects the second steam turbine；Described return water system includes condenser and water pump, and the import of condenser connects the exhaust steam outlet of the second steam turbine, condensing The outlet of device connects the water inlet of boiler by water pump；The line voltage of the first described generator is 10.5KV, and the line voltage of the second generator is 6.3KV.
- 2. the HTHP cycle generating system according to claim 1 based on useless remaining coal gas, it is characterised in that：Described First Steam Turbine is arranged on the furnace roof of boiler.
- 3. the HTHP cycle generating system according to claim 2 based on useless remaining coal gas, it is characterised in that：Described The rotating speed of first steam turbine is not less than 5000 revs/min.
- 4. the HTHP cycle generating system according to claim 3 based on useless remaining coal gas, it is characterised in that：Described The back pressure of first steam turbine is not less than 1.5MPa and is not more than 2.5MPa.
- 5. the HTHP cycle generating system according to claim 4 based on useless remaining coal gas, it is characterised in that：Described First steam turbine is reaction turbine.
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| CN201721062650.4U CN207178037U (en) | 2017-08-24 | 2017-08-24 | A kind of HTHP cycle generating system based on useless remaining coal gas |
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| CN201721062650.4U CN207178037U (en) | 2017-08-24 | 2017-08-24 | A kind of HTHP cycle generating system based on useless remaining coal gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847992A (en) * | 2019-11-25 | 2020-02-28 | 东方电气集团东方汽轮机有限公司 | Power utilization system for iron and steel enterprises and method for improving power utilization efficiency |
-
2017
- 2017-08-24 CN CN201721062650.4U patent/CN207178037U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847992A (en) * | 2019-11-25 | 2020-02-28 | 东方电气集团东方汽轮机有限公司 | Power utilization system for iron and steel enterprises and method for improving power utilization efficiency |
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