CN112539404A - Combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam - Google Patents
Combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam Download PDFInfo
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- CN112539404A CN112539404A CN202011522110.6A CN202011522110A CN112539404A CN 112539404 A CN112539404 A CN 112539404A CN 202011522110 A CN202011522110 A CN 202011522110A CN 112539404 A CN112539404 A CN 112539404A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/40—Use of two or more feed-water heaters in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/04—Controlling superheat temperature by regulating flue gas flow, e.g. by proportioning or diverting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam, which is characterized in that medium-temperature medium-pressure steam generated by a ferrosilicon waste heat furnace is merged into a high-pressure cylinder steam exhaust pipeline of a semi-coke tail gas primary reheating power generation unit, and the medium-temperature medium-pressure steam is merged with the high-pressure cylinder steam exhaust pipeline and enters a semi-coke tail gas boiler reheater for reheating, so that the ferrosilicon waste heat low-parameter steam parameter reaches a parameter consistent with the semi-coke reheating steam, and then the parameters uniformly enter a low-pressure cylinder of the semi-coke steam primary reheating power generation unit for acting power generation. An auxiliary deoxygenation water supply system and a control system are designed in a matched manner, so that the reliable and independent operation of the system is ensured; and simultaneously, matching optimization analysis is carried out on the parameters of the two sets of steam systems so as to achieve the highest energy utilization power generation efficiency.
Description
Technical Field
The invention relates to a high-efficiency power generation system with high-low parameter steam combination, in particular to a combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam.
Background
The semi-coke is widely used in the industries of ferroalloy, calcium carbide, synthetic ammonia and the like, and is also used in the fields of blast furnace injection, manufacturing of activated carbon, oil absorbent, denitration agent, civil fuel and the like. The semi-coke furnace generates a large amount of tail gas in the semi-coke production process, about 700 cubic meters of tail gas is generated every ton of semi-coke is produced, and the heat value is 1700-2000 kilocalories.
The semi-coke tail gas contains carbon monoxide, hydrogen, methane and the like, and is a good gas energy source. At present, semi-coke tail gas is mainly generated by burning and is sent to a steam turbine to generate electricity. In order to improve the power generation efficiency and the comprehensive utilization efficiency of energy, parameters of power generation at present are developed from medium-temperature medium-pressure, high-temperature high-pressure to ultra-high-temperature ultra-high-pressure single reheating or subcritical single reheating parameters, and the utilization mode and the utilization efficiency of semi-coke tail gas are greatly improved and promoted.
Meanwhile, in a production plant in the semi-coke industry, due to industrial layout, a silicon iron metallurgy production line is constructed in cooperation with a plurality of enterprises, and waste heat flue gas at 450-550 ℃ can be generated in the silicon iron production process. At present, ferrosilicon enterprises are mainly matched and constructed with medium-temperature and medium-pressure waste heat boilers and matched power generation systems.
Enterprises continuously expand, enrich and adjust product production lines of the enterprises along with energy and metallurgical market quotations, and simultaneously bring various complementary energies and residual heat with various energy qualities. The single energy efficient utilization technology is developed greatly, but the defects of dispersion of waste heat and complementary energy recycling devices, high investment cost and high operation, management and maintenance cost exist.
Disclosure of Invention
In order to solve the problems, the invention provides a combined power generation system which integrates semi-coke tail gas and ferrosilicon waste heat into a set of power generation system and effectively utilizes energy to comprehensively generate power.
In order to achieve the purpose, the combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam comprises a ferrosilicon waste heat furnace, a semi-coke tail gas boiler, a primary reheating power generation unit and a condenser, and is characterized in that the semi-coke tail gas boiler comprises a main steam outlet, a reheating inlet and a reheating outlet, wherein the main steam outlet is connected with a high-pressure cylinder inlet of the primary reheating power generation unit through a steam pipeline, outlet steam of the ferrosilicon waste heat furnace is merged into a high-pressure cylinder exhaust steam pipeline of the primary reheating power generation unit after passing through a ferrosilicon waste heat steam control valve, the tail end of the high-pressure cylinder exhaust steam pipeline is connected with the reheating inlet of the semi-coke tail gas boiler, and the reheating outlet of the semi-coke tail gas boiler is connected with a medium-low pressure cylinder inlet;
a temperature-reducing water-spraying regulating valve is arranged on the reheating inlet, a flue gas baffle door is arranged on the reheating outlet, and the temperature-reducing water-spraying regulating valve and the flue gas baffle door form a reheating steam regulating device;
the exhaust steam outlet of the single reheating generator set is connected with a condenser, the outlet of the condenser is connected with a condensate pump, a low-pressure heater, a first regulating valve, a high-pressure deaerator, a high-pressure water feed pump and a high-pressure heater are sequentially connected behind the condensate pump, and the boiler water feed outlet of the high-pressure heater is connected with a semi-coke tail gas boiler; meanwhile, the condensed water pump is connected with the ferrosilicon waste heat furnace after passing through a second regulating valve, a medium-pressure deaerator and a medium-pressure water feed pump in sequence;
the single reheating generator set is connected with a low-pressure heater through a low-pressure steam extraction pipeline, and the low-pressure heater is connected to a condenser through a water delivery pipeline;
the single reheating generator set is connected with a high-pressure heater through a high-pressure air exhaust pipeline, and the high-pressure heater is connected to a water delivery inlet of a high-pressure deaerator through a water delivery pipeline.
A further scheme is, the export of ferrosilicon waste heat stove be connected to the condenser through the temperature and pressure reducer, the reheat export of blue charcoal tail gas boiler be connected to the condenser through the temperature and pressure reducer, the main steam export of blue charcoal tail gas boiler be connected to the reheat import of blue charcoal tail gas boiler through the temperature and pressure reducer.
The further proposal is that the exhaust pressure of a high-pressure cylinder of the single reheating generator set is 2.0-2.5MPa, and the temperature is 300-; the medium-pressure deaerator is an atmospheric thermal deaerator.
The steam condenser is characterized in that a shaft seal cooler is arranged on a pipeline between the steam condenser and the low-pressure heater, the inlet of the shaft seal cooler is connected with a shaft seal for steam leakage, and the outlet of the shaft seal cooler is connected with the steam condenser through a U-shaped water seal.
The invention relates to a combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam, which is characterized in that medium-temperature medium-pressure steam generated by a ferrosilicon waste heat furnace is merged into a high-pressure cylinder steam exhaust pipeline of a semi-coke tail gas primary reheating power generation unit, and the medium-temperature medium-pressure steam is merged with the high-pressure cylinder steam exhaust pipeline and enters a semi-coke tail gas boiler reheater for reheating, so that the ferrosilicon waste heat low-parameter steam parameter reaches a parameter consistent with the semi-coke reheating steam, and then the parameters uniformly enter a low-pressure cylinder of the semi-coke steam primary reheating power generation unit for acting power generation. An auxiliary deoxygenation water supply system and a control system are designed in a matched manner, so that the reliable and independent operation of the system is ensured; and simultaneously, matching optimization analysis is carried out on the parameters of the two sets of steam systems so as to achieve the highest energy utilization power generation efficiency.
In order to ensure that the system can operate reliably and the utilization of the residual heat and energy device of one party is invalid without mutual influence, the following control systems are designed in a matching way:
a) feed water distribution control system
The semi-coke tail gas boiler is matched with a high-pressure deaerator due to the steam quality requirement. And the medium-temperature and medium-pressure ferrosilicon waste heat boiler is matched with an atmospheric thermal deaerator. Therefore, the condensed water of the condenser of the single reheating generator set is distributed to the deaerators with two different parameters through the two control regulating valves.
b) Reheating steam control and regulation for semi-coke tail gas boiler
When the ferrosilicon waste heat steam is merged into semi coke reheat steam, the amount of reheat steam is greatly increased. When the ferrosilicon waste heat steam line breaks down, the semi-coke tail gas power generation still can reliably run, and the steam temperature parameter can be controlled. Therefore, the semi-coke steam boiler is provided with a flue gas baffle door and a temperature-reducing water spraying condition system in a matching way, and the steam parameter temperature is ensured to operate at a design value.
In order to comprehensively utilize energy, the generating efficiency is higher, system parameters need to be designed, optimized and analyzed, and the optimal efficiency of both ferrosilicon waste heat steam utilization and semi-coke tail gas coal gas power generation is ensured. Therefore, the matching design of the pressure of the waste heat steam of the silicon iron and the pressure of the reheating steam of the semi-coke is optimized.
The conventional design of the pressure of the ferrosilicon waste heat steam is 2.0-2.5MPa and 350 ℃ at 300-.
The design is mainly considered from the angle of waste heat recovery, the steam pressure of the ferrosilicon waste heat furnace cannot be increased too high, otherwise, the waste heat exhaust gas temperature can be increased, and the utilization efficiency of the boiler is reduced. Meanwhile, when the parameters of the regenerative system are adjusted, the feed water temperature of the semi-coke boiler is required to meet the requirements and cannot be too low, otherwise, the corrosion of the heated surface at the tail part is easily caused, and therefore, a high-pressure and low-pressure heater is added to ensure the feed water temperature of the semi-coke tail gas boiler.
In conclusion, the combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam obtained by the invention has the following advantages:
1. through system design, the original two sets of complementary energy recovery power station devices are combined into one set, so that project investment is greatly saved, and operation and maintenance cost is reduced.
2. Because blue charcoal steam power generation system is capacious, incorporate ferrosilicon waste heat steam into blue charcoal waste heat power generation system after, to power generation system's impact littleer when ferrosilicon waste heat flue gas parameter is undulant, the system operation is more stable.
3. By incorporating the medium-temperature medium-pressure steam into the high-parameter high-efficiency generator set, when the efficiency of the high-parameter generator set is not affected, the medium-temperature medium-pressure steam obtains more efficient power generation utilization efficiency, and the generated energy is improved by about 10%.
Drawings
FIG. 1 is a piping diagram of the system of example 1.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1.
As shown in fig. 1, the combined power generation system of blue charcoal tail gas and ferrosilicon waste heat steam described in this embodiment, including ferrosilicon waste heat stove 1, blue charcoal tail gas boiler 2, once reheat generating set 17 and condenser 14, characterized by that blue charcoal tail gas boiler 2 include main steam outlet, reheat import and reheat export, wherein main steam outlet passes through steam conduit and once reheat generating set 17's high-pressure cylinder inlet connection, and the export steam of ferrosilicon waste heat stove 1 merges into once reheat generating set 17's high-pressure cylinder exhaust steam conduit behind ferrosilicon waste heat steam control valve 5, and the end connection blue charcoal tail gas boiler 2 of high-pressure cylinder exhaust steam conduit is reheat import, and blue charcoal tail gas boiler 2's reheat export passes through steam conduit and once reheat generating set 17's low and medium pressure cylinder inlet connection;
a temperature-reducing water-spraying regulating valve 4 is arranged on the reheating inlet, a flue gas baffle door 3 is arranged on the reheating outlet, and the temperature-reducing water-spraying regulating valve 4 and the flue gas baffle door 3 form a reheating steam regulating device;
an exhaust steam outlet of the primary reheating generator set 17 is connected with a condenser 14, an outlet of the condenser 14 is connected with a condensate pump 13, a shaft seal cooler 12, a low-pressure heater 11, a first regulating valve 18, a high-pressure deaerator 6, a high-pressure water feed pump 8 and a high-pressure heater 10 are sequentially connected behind the condensate pump 13, and a boiler water feed outlet of the high-pressure heater 10 is connected with a semi-coke tail gas boiler 2; meanwhile, the condensed water pump 13 is connected with the ferrosilicon waste heat furnace 1 after passing through a second regulating valve 19, a medium-pressure deaerator and a medium-pressure water feed pump 9 in sequence;
the single reheating generator set 17 is connected with the low-pressure heater 11 through a low-pressure steam extraction pipeline, and the low-pressure heater 11 is connected to the condenser 14 through a water pipeline;
the single reheating generator set 17 is connected with the high-pressure heater 10 through a high-pressure air exhaust pipeline, and the high-pressure heater 10 is connected to a water delivery inlet of the high-pressure deaerator 6 through a water delivery pipeline.
The connecting shaft of the shaft seal cooler 12 seals the leakage steam, and the outlet is connected with the condenser 14 through a U-shaped water seal.
The export of ferrosilicon waste heat stove 1 be connected to condenser 14 through temperature-reducing pressure reducer 20, blue charcoal tail gas boiler 2's reheat export be connected to condenser 14 through temperature-reducing pressure reducer 20 and form low pressure bypass 16, blue charcoal tail gas boiler 2's main steam export be connected to blue charcoal tail gas boiler 2's reheat import through temperature-reducing pressure reducer 20 and form high pressure bypass 15.
The exhaust pressure of a high-pressure cylinder of the primary reheating generator set 17 is 2.0-2.5MPa, and the temperature is 300-350 ℃; the medium-pressure deaerator is an atmospheric thermal deaerator.
Steam that ferrosilicon waste heat stove 1 produced merges into the high-pressure cylinder steam extraction of once reheating generating set 17 through the middling pressure steam pipeline to control the steam pressure of ferrosilicon waste heat stove 1 through ferrosilicon waste heat steam control valve 5, it is stable to guarantee steam pressure when ferrosilicon waste heat stove 1 accords with the fluctuation. After the steam is merged into the reheating inlet and is reheated by the semi-coke tail gas boiler 2, the steam with qualified parameters is sent into the middle and low pressure cylinder of the once reheating generator set 17, and the combined steam power generation is completed.
The ferrosilicon waste heat furnace 1 and the semi-coke tail gas boiler 2 are respectively provided with an independent water supply system. The high-pressure deaerator 6 and the high-pressure water feed pump 8 are responsible for supplying water to the semi-coke tail gas boiler 2, and the medium-pressure deaerator 7 and the medium-pressure water feed pump 9 are responsible for supplying water to the ferrosilicon waste heat furnace 1. Two regulating valves are arranged in the condensed water system to carry out balanced distribution on the condensed water to the two sets of water supply systems.
The flue gas damper 3 and the temperature-reducing water spray regulating valve 4 are matched with the reheater system of the semi-coke tail gas boiler 2, so that when the load of the silicon iron waste heat furnace 1 is fluctuated, the temperature of reheated steam of the semi-coke tail gas boiler 2 is controllable. The main steam of the ferrosilicon waste heat furnace 1 is provided with a temperature and pressure reducing device 20, so that the main steam of the ferrosilicon can be directly discharged into the condenser 14 system when the startup and accident conditions occur.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The utility model provides a blue charcoal tail gas and ferrosilicon waste heat steam's combined power generation system, includes ferrosilicon waste heat stove, blue charcoal tail gas boiler, once reheat generating set and condenser, characterized by blue charcoal tail gas boiler include main steam outlet, reheat import and reheat export, wherein main steam outlet passes through steam conduit and once reheat generating set's high-pressure cylinder access connection, the export steam of ferrosilicon waste heat stove incorporates into once reheat generating set's high-pressure cylinder exhaust steam pipe behind the ferrosilicon waste heat steam control valve, the end-to-end connection blue charcoal tail gas boiler reheat import of high-pressure cylinder exhaust steam pipe, blue charcoal tail gas boiler's reheat export passes through steam conduit and once reheat generating set's middle-low pressure cylinder access connection;
a temperature-reducing water-spraying regulating valve is arranged on the reheating inlet, a flue gas baffle door is arranged on the reheating outlet, and the temperature-reducing water-spraying regulating valve and the flue gas baffle door form a reheating steam regulating device;
the exhaust steam outlet of the single reheating generator set is connected with a condenser, the outlet of the condenser is connected with a condensate pump, a low-pressure heater, a first regulating valve, a high-pressure deaerator, a high-pressure water feed pump and a high-pressure heater are sequentially connected behind the condensate pump, and the boiler water feed outlet of the high-pressure heater is connected with a semi-coke tail gas boiler;
meanwhile, the condensed water pump is connected with the ferrosilicon waste heat furnace after passing through a second regulating valve, a medium-pressure deaerator and a medium-pressure water feed pump in sequence;
the single reheating generator set is connected with a low-pressure heater through a low-pressure steam extraction pipeline, and the low-pressure heater is connected to a condenser through a water delivery pipeline;
the single reheating generator set is connected with a high-pressure heater through a high-pressure air exhaust pipeline, and the high-pressure heater is connected to a water delivery inlet of a high-pressure deaerator through a water delivery pipeline.
2. The combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam as claimed in claim 1, wherein the outlet of the ferrosilicon waste heat furnace is connected to a condenser through a temperature and pressure reducer, the reheating outlet of the semi-coke tail gas boiler is connected to the condenser through a temperature and pressure reducer, and the main steam outlet of the semi-coke tail gas boiler is connected to the reheating inlet of the semi-coke tail gas boiler through a temperature and pressure reducer.
3. The combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam as claimed in claim 1 or 2, wherein the exhaust pressure of a high pressure cylinder of the primary reheating power generating unit is 2.0-2.5MPa, and the temperature is 300-350 ℃; the medium-pressure deaerator is an atmospheric thermal deaerator.
4. The combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam according to claim 1 or 2, characterized in that a shaft seal cooler is arranged on a pipeline between the condenser and the low-pressure heater, an inlet of the shaft seal cooler is connected with a shaft for sealing steam leakage, and an outlet of the shaft seal cooler is connected with the condenser through a U-shaped water seal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011522110.6A CN112539404A (en) | 2020-12-21 | 2020-12-21 | Combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011522110.6A CN112539404A (en) | 2020-12-21 | 2020-12-21 | Combined power generation system of semi-coke tail gas and ferrosilicon waste heat steam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875096A (en) * | 2022-10-28 | 2023-03-31 | 中国长江动力集团有限公司 | Low-parameter intermediate reheating steam turbine thermal power generation system |
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2020
- 2020-12-21 CN CN202011522110.6A patent/CN112539404A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875096A (en) * | 2022-10-28 | 2023-03-31 | 中国长江动力集团有限公司 | Low-parameter intermediate reheating steam turbine thermal power generation system |
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