CN206280115U - The device that a kind of utilization IGCC low grade residual heats generate electricity - Google Patents
The device that a kind of utilization IGCC low grade residual heats generate electricity Download PDFInfo
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- CN206280115U CN206280115U CN201621364542.8U CN201621364542U CN206280115U CN 206280115 U CN206280115 U CN 206280115U CN 201621364542 U CN201621364542 U CN 201621364542U CN 206280115 U CN206280115 U CN 206280115U
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Abstract
The device that a kind of utilization IGCC low grade residual heats generate electricity, organic working medium after pressurization is heated to be superheated steam state from liquid as thermal source by the use of saturation synthesis gas, expansion work generates electricity in expanding machine, turn into liquid subsequently into condenser, the organic working medium of liquid is boosted through pump, is thusly-formed an organic rankie cycle；The utility model is used to reduce the radiation loss in gasification island cooling tower, and using gasifying, island middle-low temperature heat improves system generating efficiency.
Description
Technical field
The utility model belongs to advanced energy technology field, and in particular to the dress that a kind of utilization IGCC low grade residual heats generate electricity
Put.
Background technology
Being will be clear for integrated gasification combined cycle plants (Integrated Gasification Combined Cycle, IGCC)
The advanced electricity generation system that clean Coal Gasification Technology and efficient Gas-steam Combined Cycle is combined, imitates with generating higher
Rate and excellent environmental-protecting performance, IGCC implement CO2Energy loss is less than conventional coal-fired power generator set after trapping.IGCC is by two big portions
It is grouped into, i.e. coal gasification part and Gas-steam Combined Cycle part.Coal gasification part capital equipment has gasification furnace, space division system
System, gas purification equipment, CO2Capturing device etc.；The capital equipment of Gas-steam Combined Cycle part has gas turbine, waste heat
Boiler, steam turbine etc..The course of work of IGCC be briefly described as coal in gasification furnace with technical grade pure oxygen and water by gasified reverse
Middle low-heat value gas (mainly CO+H should be turned into2), by reclaiming backheat, purification and CO2After trapping, the sulphur in raw gas is removed
The CO of the pollutants such as compound, ammonia, nitride, dust and the overwhelming majority2, the gaseous fuel for being changed into cleaning low-carbon (LC) is allowed to, enter
The combustion chambers burn of gas turbine, then high-temperature gas working medium driving combustion gas turbine work done, combustion turbine exhaustion then enters waste heat
Boiler heating feedwater, produces superheated steam to drive steam turbine work done.
The feasible desulfurization of industry and decarbonization process are absorption process, and the technique needs for synthesis gas temperature to be down to normal temperature or more
Low temperature.At 1300~1400 DEG C, for pot destroying process, synthesis gas is returned the synthesis gas temperature of gasification outlet of still by waste heat boiler
Synthesis gas temperature remains above 300 DEG C after receiving sensible heat, then is gone out the pollutants such as dust, NH3, HCN, Cl by dedusting, wet scrubbing,
Synthesis gas turns into 140~150 DEG C of saturation synthesis gas；For chilling process, the synthesis gas of the outlet of still that gasifies is directly by water Quench
To 180 DEG C or so saturation synthesis gas.Contain substantial amounts of vapor in these saturation synthesis gas, amount of latent heat is huge.Generally these are hot
The condensate for preheated fuel gas expander inlet fuel gas or Preheated steam bottoming cycle is measured, but due to IGCC middle-low grade heats
More, tow taste heat is difficult to use up.These tow taste heats are taken away by cooling water, are discharged into environment by cooling tower, so that
Energy is caused largely to waste.Therefore research and utilization IGCC low grade residual heats generate electricity very huge economic implications.
The content of the invention
In order to solve the problems, such as above-mentioned prior art, the purpose of this utility model is to provide a kind of low using IGCC
The device of grade cogeneration, for reducing the radiation loss in gasification island cooling tower, improves system generating efficiency.
To achieve the above objectives, the utility model is adopted the following technical scheme that：
The device that a kind of utilization IGCC low grade residual heats generate electricity, including gasification furnace 2, the coal powder entrance of the gasification furnace 2 connect
Logical coal processing equipment 1, the oxidant inlet connection space division system 3 of gasification furnace 2, gasification furnace 2 also includes steam entry, gasification furnace
2 syngas outlet is sequentially communicated waste heat boiler 4, gas-to-gas heat exchanger 5, cleaning dust equipment 6, water-gas shift unit 7, waste heat
Recovery unit 8, desulfurization and decarburization unit 9 and sulfur recovery unit 10；The organic working medium side outlet connection of the waste heat recovery unit 8 is swollen
The organic working medium entrance of swollen machine 15, the organic working medium entrance of the organic working medium outlet condenser 16 of expanding machine 15, condenser
The entrance of 16 organic working medium outlet storage tank 17, the entrance of the outlet organic working medium pump 18 of storage tank 17, organic working medium
The entrance of the outlet waste heat recovery unit 8 of pump 18；The coolant outlet of condenser 16 connects the entrance of cooling tower 14, cooling
The cooling water inlet of the outlet condenser 16 of tower 14；The fuel gas outlet of the desulfurization and decarburization unit 9 enters gas-gas and changes
The fuel gas entrance of hot device 5, the entrance of the fuel gas outlet gas turbine 11 of gas-to-gas heat exchanger 5, the tail of gas turbine 11
The entrance of gas outlet waste heat boiler 12, the entrance of the high temperature and high pressure steam outlet steam turbine 13 of waste heat boiler 12；Institute
The higher pressure steam outlet for stating waste heat boiler 4 connects the entrance of waste heat boiler 12.
The method that the device generated electricity using IGCC low grade residual heats is generated electricity, raw coal is located in coal processing equipment 1
After managing as coal dust, it is transported in gasification furnace 2；The pure oxygen that space division system 3 is produced and other one vapor as gasification furnace 2 oxygen
Agent and reaction medium enter in gasification furnace 2；The synthesis gas that gasification furnace 2 is produced enters waste heat boiler 4, the slag that gasification furnace 2 is produced
Exclude；Synthesis gas after the release high temperature sensible heat of waste heat boiler 4, into gas-to-gas heat exchanger 5, the high steam that waste heat boiler 4 is produced
Overheated into waste heat boiler 12；Synthesis gas is lowered the temperature in gas-to-gas heat exchanger 5 and discharges heat to fuel gas, subsequently enters washing
Cleaner 6；Synthesis gas removes dust, NH in cleaning dust equipment 63After the pollutant such as Cl, into water-gas shift unit 7；
Most of CO and water reaction conversions are CO in water-gas shift unit 7 by synthesis gas2With H2, enter back into waste heat recovery unit 8；
Saturation synthesis gas in waste heat recovery unit 8 as thermal source in waste heat recovery unit 8 by organic working medium from liquid
It is heated to be superheated steam state, the organic working medium of the superheated steam state expansion work in expanding machine 15, subsequently into condenser
16 are condensed into liquid, condensed organic working medium after the storage of storage tank 17 and organic working medium pump 8 are boosted, into waste heat recovery
Unit 8 is saturated synthesis gas heating, completes a circulation；
Synthesis gas enters desulfurization and decarburization unit 9 after the cooling of waste heat recovery unit 8, what desulfurization and decarburization unit 9 was separated
H2S enters sulfur recovery unit 10, and sulfur recovery unit 10 is by H2S is converted into product sulphur；The CO that desulfurization and decarburization unit 9 is produced2By power station
Output, for utilizing and sealing up for safekeeping；Synthesis gas removes CO in desulfurization and decarburization unit 92With H2After S, as proper fuel gas, then enter
Enter gas-to-gas heat exchanger 5 to heat up；Fuel gas enters the acting generating of gas turbine 11 after leaving gas-to-gas heat exchanger 5, and combustion tail gas enter
Enter waste heat boiler 12；The high temperature and high pressure steam that waste heat boiler 12 is produced enters the acting of steam turbine 13 and generates electricity, and waste heat boiler 12 is discharged fume
Enter air.
The utility model is compared to the prior art compared with advantages below：
1st, the device that the utilization IGCC low grade residual heats that the utility model is provided generate electricity, recyclable IGCC low grade residual heats enter
Row is generated electricity, and IGCC generating efficiencies are improved so as to reach, and reduces the effect of unit coal consumption.
2nd, the device that the utilization IGCC low grade residual heats that the utility model is provided generate electricity, it is possible to decrease the cooling heat of cooling tower is negative
Lotus, reduces the water consume of cooling tower.
Additionally, the dirty nitrogen that condenser 16 can be produced using space division system 3 is cooled down, condenser can be further reduced
The condensation temperature of organic working medium in 16, improves the power output of expanding machine 15, improves net power station efficiency.
Brief description of the drawings
Fig. 1 is that the utility model utilizes IGCC low-grade afterheat power generating device schematic diagrames.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Embodiment
As shown in figure 1, the method that the utility model is generated electricity using IGCC low grade residual heats, raw coal is in coal processing equipment 1
After being processed as coal dust, it is transported in gasification furnace 2；The pure oxygen that space division system 3 is produced is with other one vapor as gasification furnace 2
Oxidant and reaction medium enter in gasification furnace 2；The synthesis gas that gasification furnace 2 is produced enters waste heat boiler 4, what gasification furnace 2 was produced
Slag is excluded；Synthesis gas after the release high temperature sensible heat of waste heat boiler 4, into gas-to-gas heat exchanger 5, steam by the high pressure that waste heat boiler 4 is produced
Vapour is overheated into waste heat boiler 12；Synthesis gas is lowered the temperature in gas-to-gas heat exchanger 5 and discharges heat to fuel gas, is subsequently entered and is washed
Wash cleaner 6；Synthesis gas removes dust, NH in cleaning dust equipment 63After the pollutant such as Cl, into water-gas shift unit
7；Most of CO and water reaction conversions are CO in water-gas shift unit 7 by synthesis gas2With H2, enter back into waste heat recovery unit 8；
Saturation synthesis gas in waste heat recovery unit 8 as thermal source in waste heat recovery unit 8 by organic working medium from liquid
It is heated to be superheated steam state, the organic working medium of the superheated steam state expansion work in expanding machine 15, subsequently into condenser
16 are condensed into liquid, condensed organic working medium after the storage of storage tank 17 and organic working medium pump 8 are boosted, into waste heat recovery
Unit 8 is saturated synthesis gas heating, completes a circulation；
Synthesis gas enters desulfurization and decarburization unit 9 after the cooling of waste heat recovery unit 8, what desulfurization and decarburization unit 9 was separated
H2S enters sulfur recovery unit 10, and sulfur recovery unit 10 is by H2S is converted into product sulphur；The CO that desulfurization and decarburization unit 9 is produced2By power station
Output, for utilizing and sealing up for safekeeping；Synthesis gas removes CO in desulfurization and decarburization unit 92With H2After S, as proper fuel gas, then enter
Enter gas-to-gas heat exchanger 5 to heat up；Fuel gas enters the acting generating of gas turbine 11 after leaving gas-to-gas heat exchanger 5, and combustion tail gas enter
Enter waste heat boiler 12；The high temperature and high pressure steam that waste heat boiler 12 is produced enters the acting of steam turbine 13 and generates electricity, and waste heat boiler 12 is discharged fume
Enter air.
Claims (1)
1. the device that a kind of utilization IGCC low grade residual heats generate electricity, it is characterised in that：Including gasification furnace (2), the gasification furnace (2)
Coal powder entrance connect coal processing equipment (1), the oxidant inlet of gasification furnace (2) connects space division system (3), and gasification furnace (2) is also
Including steam entry, the syngas outlet of gasification furnace (2) is sequentially communicated waste heat boiler (4), gas-to-gas heat exchanger (5), washs and remove
Dirt equipment (6), water-gas shift unit (7), waste heat recovery unit (8), desulfurization and decarburization unit (9) and sulfur recovery unit (10)；Institute
The organic working medium entrance of organic working medium side outlet connection expanding machine (15) of waste heat recovery unit (8) is stated, expanding machine (15) have
The organic working medium entrance of machine sender property outlet connection condenser (16), organic working medium outlet storage tank (17) of condenser (16)
Entrance, the entrance of outlet organic working medium pump (18) of storage tank (17), the outlet waste heat recovery of organic working medium pump (18)
The entrance of unit (8)；The entrance of coolant outlet connection cooling tower (14) of condenser (16), the outlet of cooling tower (14)
The cooling water inlet of condenser (16)；The fuel gas outlet of the desulfurization and decarburization unit (9) enters gas-to-gas heat exchanger (5)
Fuel gas entrance, the entrance of fuel gas outlet gas turbine (11) of gas-to-gas heat exchanger (5), the tail of gas turbine (11)
The entrance of gas outlet waste heat boiler (12), high temperature and high pressure steam outlet steam turbine (13) of waste heat boiler (12) enter
Mouthful；The entrance of higher pressure steam outlet connection waste heat boiler (12) of the waste heat boiler (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364542.8U CN206280115U (en) | 2016-12-13 | 2016-12-13 | The device that a kind of utilization IGCC low grade residual heats generate electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364542.8U CN206280115U (en) | 2016-12-13 | 2016-12-13 | The device that a kind of utilization IGCC low grade residual heats generate electricity |
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| CN206280115U true CN206280115U (en) | 2017-06-27 |
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| CN201621364542.8U Active CN206280115U (en) | 2016-12-13 | 2016-12-13 | The device that a kind of utilization IGCC low grade residual heats generate electricity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761990A (en) * | 2016-12-13 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | The apparatus and method that a kind of utilization IGCC low grade residual heats generate electricity |
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2016
- 2016-12-13 CN CN201621364542.8U patent/CN206280115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761990A (en) * | 2016-12-13 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | The apparatus and method that a kind of utilization IGCC low grade residual heats generate electricity |
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