CN204200282U - A kind of space division system compression device drive unit - Google Patents
A kind of space division system compression device drive unit Download PDFInfo
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- CN204200282U CN204200282U CN201420674947.6U CN201420674947U CN204200282U CN 204200282 U CN204200282 U CN 204200282U CN 201420674947 U CN201420674947 U CN 201420674947U CN 204200282 U CN204200282 U CN 204200282U
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- steam turbine
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
A kind of space division system compression device drive unit, comprises original space division system, gasification oven, gas turbine and exhaust heat boiler and newly-increased small steam turbine, small steam turbine vapour condenser and condensate pump in Integrated Gasification Combined Cycle System; Space division system mainly comprises compression device and distillation system; Compression device rotating shaft is connected with small steam turbine rotating shaft, distillation system output of products mouth is communicated with gasification oven gas input port, gasification oven output of products mouth is communicated with gas turbine fuel inlet opening, gas turbine delivery outlet is communicated with exhaust heat boiler fueling ports, exhaust heat boiler steam outlet is communicated with small steam turbine inlet opening, small steam turbine delivery outlet is communicated with small steam turbine vapour condenser inlet opening, and small steam turbine vapour condenser delivery outlet is communicated with by condensate pump with exhaust heat boiler feed-water intake; The utility model, by optimizing the driving mode of space division system compression device, reduces investment maintenance cost, improves equipment reliability, reduces space division system energy consumption.
Description
Technical field
The utility model relates to small steam turbine and drives space division system compression device field, is specifically related to a kind of space division system compression device drive unit.
Background technique
Within the following long term, China will be all the general layout based on coal fired power generation.Integrated gasification combined cycle for power generation is the Filter Tuber For Clean Coal combustion power generation technology of a kind of advanced person, and it has efficiently, the feature of environmental protection, is considered to one of the most potential clean coal technology in future.Therefore, for promoting sustainable development, integrated gasification combined cycle for power generation is played an important role in the coal fired power generation of China's medium-long term.
Space division system is the highest unit that consumes energy in integrated gasification combined cycle for power generation system, and according to statistics, the large appointment of space division system consumes the 70%-85% of full factory station service.In space division system, compressed air unit is topmost energy consumption equipment, and its energy consumption accounts for 80% ~ 90% of space division system energy consumption.Compression device in space division system is respectively by independent motoring, there is following problem in this mode: the capacity of the motor that (1) is equipped with due to compressed air unit, transformer and automatic control equipment is higher, and thus the investment cost of package unit is high; (2) the general supercharging equipment such as pump, compressor is when starting, starting torque is larger, in order to adapt to detent torque, the power of starting electrical machinery is generally all high than the rated power of equipment by about 10%, so when equipment normally runs, motor is just often in light running, and the capacity of motor itself is not in full use, make that motor running efficiency is low, performance is bad, thus increase operating cost; (3) motor belongs to the motor of continuous operation, and when normally working, the rotating speed of motor is generally invariable, and thus its load adjustable extent is less.When integrated gasification combined cycle for power generation system cloud gray model is at comparatively low-load (such as 50%), space division system can waste a part of load, less economical.
Visible, seek a kind of novel space division system compression device driving mode, with improve the energy consumption that conventional electric motor driving mode brings high, invest high defect, thus ensure integrated gasification combined cycle for power generation systematic economy, safe operation is significantly.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of space division system compression device drive unit, by optimizing the driving mode of space division system compression device in integrated gasification combined cycle for power generation system, thus reduce investment maintenance cost, raising equipment reliability, minimizing space division system energy consumption.
For reaching above object, the utility model adopts following technological scheme:
A kind of space division system compression device drive unit, comprises original space division system 1, gasification oven 3, gas turbine 4 and exhaust heat boiler 5 and newly-increased small steam turbine 2, small steam turbine vapour condenser 6 and condensate pump 7 in Integrated Gasification Combined Cycle System, described space division system mainly comprises compression device 8 and distillation system 9, the rotating shaft of described compression device 8 is connected with the rotating shaft of small steam turbine 2, the output of products mouth of distillation system 9 is connected with the gas input port of gasification oven 3, the output of products mouth of gasification oven 3 is connected with the fueling ports of gas turbine 4, the delivery outlet of gas turbine 4 is connected with the fueling ports of exhaust heat boiler 5, the steam outlet of exhaust heat boiler 5 is connected with the inlet opening of small steam turbine 2, the delivery outlet of small steam turbine 2 is connected with the inlet opening of small steam turbine vapour condenser 6, the delivery outlet of small steam turbine vapour condenser 6 is connected by condensate pump 7 with the feed-water intake of exhaust heat boiler 5.
Described space division system 1 comprises multiple compression device 8, coaxially driving partially or completely through small steam turbine 2 in multiple compression device 8, or is equipped with small steam turbine 2 and small steam turbine vapour condenser 6 respectively according to capacity requirement.
2 compression devices 8 in described space division system 1 are coaxially driven by small steam turbine 2, and the power of described small steam turbine 2 is 40MW.
Rotating speed and the throttle flow of described small steam turbine 2 can regulate according to load.
Compared to the prior art, tool has the following advantages the utility model:
1) investment is reduced.Adopt conventional electric motor driving mode will meet startup requirement, the motor slightly higher than compression device rated power must be equipped with, in addition, also need to be equipped with the equipment such as starting transformer, starting trouble simultaneously.And apply the utility model device driving compression device, owing to taking when starting the mode first starting gas turbine---the steam of space division system and Power supply problem when solving startup by gas-firing, thus without the need to installing starting trouble, only the identical small steam turbine of same compression device rated power and supplementary equipment thereof need be equipped with.Therefore, application the utility model device drives compression device, significantly can save initial investment.
2) efficiency of energy utilization is improved.Motor consumption be electric energy, steam turbine consumption be heat energy, heat energy has certain conversion efficiency when electric energy is changed, and therefore compared to conventional electric motor driving mode, the capacity usage ratio of the utility model device driving mode is higher.Moreover, during owing to normally running, motor generally keeps rotating speed constant, therefore causes the load regulation range of space division system very little, and when performing low-load running of machine set, space division system will be wasted a part and exert oneself, and this method of operation is very uneconomical.And steam turbine can regulate exert oneself by regulating throttle flow, regulation range is wider, thus makes space division system can follow payload to regulate and exert oneself, improve efficiency of energy utilization, saved cost, improve power station performance driving economy.
Accompanying drawing explanation
Fig. 1 is that the sky of the utility model embodiment divides compression device drives device schematic diagram.
Fig. 2 is the integrated gasification combined cycle for power generation system flow schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of space division system compression device of the present embodiment drive unit, comprises original space division system 1, gasification oven 3, gas turbine 4 and exhaust heat boiler 5 and newly-increased small steam turbine 2, small steam turbine vapour condenser 6 and condensate pump 7 in Integrated Gasification Combined Cycle System; Space division system mainly comprises compression device 8 and distillation system 9; In Integrated Gasification Combined Cycle System, original space division system 1, gasification oven 3, gas turbine 4 and exhaust heat boiler 5 are connected by its original mode in integrated gasification combined cycle for power generation, the rotating shaft of described small steam turbine 2 is connected with compression device 8 rotating shaft, small steam turbine 2 inlet opening is connected with exhaust heat boiler 5 medium pressure steam delivery outlet, small steam turbine 2 delivery outlet is connected with small steam turbine vapour condenser 6 inlet opening, and the delivery outlet of small steam turbine vapour condenser 6 is connected by condensate pump 7 with the feed-water intake of exhaust heat boiler 5.
Working principle of the present utility model is: when Integrated Gasification Combined Cycle System is in operating conditions, in described drive unit, space division system 1 is for providing oxygen and nitrogen product for gasification oven 3, by these gas products, pulverized coal particle is converted into combustible gas by gasification oven 3, and sends into gas turbine 4 and burn; Fuel gas enters the turbine band dynamic load acting of gas turbine 4 after gas turbine 4 combustion chambers burn expands, and the weary gas finishing merit enters exhaust heat boiler 5 and the WATER AS FLOW MEDIUM in exhaust heat boiler 5 is heated into superheated vapor; Enter small steam turbine 2 expansion work from exhaust heat boiler 5 part superheated vapor out, thus drive space division system 1 compression device axis of rotation; The exhaust steam finishing merit in small steam turbine 2 enters small steam turbine vapour condenser 6, after condensing heat-exchange, become water, and sends into by condensate pump 7 circulation that exhaust heat boiler 5 completes part working medium; When Integrated Gasification Combined Cycle System is in cold start operating mode, the for a change startup of space division system 1 relies on the present situation of starting trouble, original Starting mode will be changed---space division system 1 starts at first, and startup sequencing is become gas turbine 4, exhaust heat boiler 5, main steam turbine, small steam turbine 2, space division system 1 and gasification oven 3; Because space division system 1 will start prior to gasification oven 3, gasification oven 3 cannot provide fuel for space division system 1, and the fuel gas therefore replacing gasification oven 3 to export by rock gas enters gas turbine 4 and burns for the startup of space division system 1 provides energy; For ensureing that gas turbine 4 has higher mechanical efficiency, under keeping gas turbine 4 to be operated in higher load operating mode; The turbine that rock gas enters gas turbine 4 after gas turbine 4 combustion chambers burn drives the acting of gas turbine 4 generator, and the weary gas finishing merit enters exhaust heat boiler 5 and drives exhaust heat boiler to start; Exhaust heat boiler 5 drives small steam turbine 2 and main steam turbine to start after producing superheated vapor, thus drives space division system 1 compression device to start; After space division system 1 starts, gasification oven 3 starts, and reach can for after gas turbine provides the condition of fuel, described system proceeds to operating conditions.
Based on the utility model device certain 250MW integrated gasification combined cycle for power generation system flow as shown in Figure 2.Except the described equipment be included in space division system compression device drive unit, also comprise main steam turbine 10, main condensate water system 11, gas turbine powered generator 12 and main steam turbine generator 13.Distillation system 9 output of products mouth is corresponding with gasification oven 3 gas input port to be communicated with, and gasification oven 3 output of products mouth is connected with gas turbine 4 fueling ports, and gas turbine 4 rotating shaft is connected with gas turbine powered generator 12 rotating shaft; Exhaust heat boiler 5 fueling ports is connected with gas turbine 4 delivery outlet, exhaust heat boiler 5 high pressure steam delivery outlet is connected with main steam turbine 10 inlet opening, main steam turbine 10 rotating shaft is connected with main steam turbine generator 13 rotating shaft, condensate pump 7 delivery outlet is connected with main condensate water system 11 feed-water intake, main steam turbine 10 delivery outlet is connected with main condensate water system 11 vapor inlet port, and main condensate water system 11 delivery outlet is connected with exhaust heat boiler 5 feed-water intake.
Preferably, 2 large-scale compression equipment in space division system are coaxially driven by small steam turbine, and Miniature steamer acc power is 40MW.
When the integrated gasification combined cycle for power generation system applying the utility model device is in oepration at full load operating mode, space division system 1 is for providing oxygen and nitrogen product for gasification oven, by these gas products, pulverized coal particle is converted into combustible gas by gasification oven 3, and (effective component is CO and H
2), and send into gas turbine 4 and burn.The turbine acting that fuel gas enters gas turbine 4 with the temperature of about 1140 DEG C after gas turbine 4 combustion chambers burn drives gas turbine powered generator 12 to generate electricity, and gas turbine 4 exhaust enters exhaust heat boiler 5 and the working-medium water in exhaust heat boiler 5 is heated into superheated vapor.From exhaust heat boiler 5 out press through hot steam (temperature is 522 DEG C, and pressure is 4.12MPa) and enter small steam turbine 2 expansion work (power is 40MW), thus drive the compression device 8 of space division system 1 to operate; High pressure superheated steam (temperature is 522 DEG C, and pressure is 9.359MPa) enters main steam turbine 10 expansion work, thus drives main steam turbine generator 13 to rotate generating.The exhaust steam finishing merit at small steam turbine 2 and main steam turbine 10 enters small steam turbine vapour condenser 6 and main condensate water system 11 respectively, water after small steam turbine vapour condenser 6 condensing heat-exchange is collected by condensate pump 7 and the condensed water of main condensate water system 11, enters exhaust heat boiler 5 together and completes working medium circulation.
When the integrated gasification combined cycle for power generation system applying the utility model device is in cold start operating mode, original Starting mode will be changed---space division system 1 starts at first, and startup sequencing is become gas turbine 4, exhaust heat boiler 5, main steam turbine 10, small steam turbine 2, space division system 1 and gasification oven 3.Because space division system 1 will start prior to gasification oven 3, gasification oven 3 cannot provide fuel for space division system 1, and the fuel gas therefore replacing gasification oven 3 to export by rock gas enters gas turbine 4 and burns for the startup of space division system 1 provides energy.For ensureing that gas turbine 4 has higher mechanical efficiency, under keeping gas turbine 4 to be operated in 80% load condition.The turbine that rock gas enters gas turbine 4 after gas turbine 4 combustion chambers burn drives gas turbine powered generator 12 to do work, and the weary gas finishing merit enters exhaust heat boiler 5 and drives exhaust heat boiler to start.Exhaust heat boiler 5 drives main steam turbine 10 and small steam turbine 2 to start after producing superheated vapor, thus drives the compression device 8 of space division system 1 to start.After space division system 1 starts, gasification oven 3 starts, and reach can for after gas turbine 4 provides the condition of fuel, described system proceeds to operating conditions.
The utility model is by making full use of integrated gasification combined cycle for power generation system existing equipment and Placement thereof and corresponding adjustment Starting mode optimizes space division system compression device driving problems, improve efficiency of energy utilization and the load follow performance thereof of space division system, reach and reduce space division system energy consumption, promote the object of power station Economy.For the integrated gasification combined cycle for power generation system of 250MW, as adopted motor to drive space division system compression device, motor that total rated power is 42MW and the equipment such as starting transformer, starting trouble that capacity matches should be equipped with, apply the utility model device and then only need be equipped with the vapour condenser and condensate pump that the small steam turbine of 40MW and capacity match, the initial investment of about 1,000 ten thousand yuan can be saved; After application the utility model device a period of time, power supply efficiency on average improves 1.5%; Under small steam turbine operates in good situation always, also save considerable operation and maintenance cost.
Claims (4)
1. a space division system compression device drive unit, is characterized in that: comprise original space division system (1) in Integrated Gasification Combined Cycle System, gasification oven (3), gas turbine (4) and exhaust heat boiler (5) and newly-increased small steam turbine (2), small steam turbine vapour condenser (6) and condensate pump (7), described space division system mainly comprises compression device (8) and distillation system (9), the rotating shaft of described compression device (8) is connected with the rotating shaft of small steam turbine (2), the output of products mouth of distillation system (9) is connected with the gas input port of gasification oven (3), the output of products mouth of gasification oven (3) is connected with the fueling ports of gas turbine (4), the delivery outlet of gas turbine (4) is connected with the fueling ports of exhaust heat boiler (5), the steam outlet of exhaust heat boiler (5) is connected with the inlet opening of small steam turbine (2), the delivery outlet of small steam turbine (2) is connected with the inlet opening of small steam turbine vapour condenser (6), the delivery outlet of small steam turbine vapour condenser (6) is connected by condensate pump (7) with the feed-water intake of exhaust heat boiler (5).
2. a kind of space division system compression device drive unit according to claim 1, it is characterized in that: described space division system (1) comprises multiple compression device (8), coaxially driving partially or completely through small steam turbine (2) in multiple compression device (8), or be equipped with small steam turbine (2) and small steam turbine vapour condenser (6) respectively according to capacity requirement.
3. a kind of space division system compression device drive unit according to claim 2, it is characterized in that: 2 compression devices (8) in described space division system (1) are coaxially driven by small steam turbine (2), and the power of described small steam turbine (2) is 40MW.
4. a kind of space division system compression device drive unit according to claim 1, is characterized in that: rotating speed and the throttle flow of described small steam turbine (2) can regulate according to load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420674947.6U CN204200282U (en) | 2014-11-05 | 2014-11-05 | A kind of space division system compression device drive unit |
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| CN201420674947.6U CN204200282U (en) | 2014-11-05 | 2014-11-05 | A kind of space division system compression device drive unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358595A (en) * | 2014-11-05 | 2015-02-18 | 中国华能集团清洁能源技术研究院有限公司 | Device for driving compression device of space division system and driving method of device |
| CN112944805A (en) * | 2021-02-04 | 2021-06-11 | 华能（天津）煤气化发电有限公司 | Method for automatically changing load of air separation of Integrated Gasification Combined Cycle (IGCC) unit |
| CN113931745A (en) * | 2021-09-18 | 2022-01-14 | 华电电力科学研究院有限公司 | Waste heat boiler system of gas-steam combined cycle unit and starting method thereof |
-
2014
- 2014-11-05 CN CN201420674947.6U patent/CN204200282U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358595A (en) * | 2014-11-05 | 2015-02-18 | 中国华能集团清洁能源技术研究院有限公司 | Device for driving compression device of space division system and driving method of device |
| CN112944805A (en) * | 2021-02-04 | 2021-06-11 | 华能（天津）煤气化发电有限公司 | Method for automatically changing load of air separation of Integrated Gasification Combined Cycle (IGCC) unit |
| CN113931745A (en) * | 2021-09-18 | 2022-01-14 | 华电电力科学研究院有限公司 | Waste heat boiler system of gas-steam combined cycle unit and starting method thereof |
| CN113931745B (en) * | 2021-09-18 | 2023-06-16 | 华电电力科学研究院有限公司 | Waste heat boiler system of gas-steam combined cycle unit and starting method thereof |
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