CN216691199U - Gas-heat-electricity triple energy supply station - Google Patents
Gas-heat-electricity triple energy supply station Download PDFInfo
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- CN216691199U CN216691199U CN202220418382.XU CN202220418382U CN216691199U CN 216691199 U CN216691199 U CN 216691199U CN 202220418382 U CN202220418382 U CN 202220418382U CN 216691199 U CN216691199 U CN 216691199U
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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
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model belongs to the technical field of gas-heat-electricity triple supply, and particularly relates to a gas-heat-electricity triple supply station. Aiming at the defect of low energy utilization rate of the existing gas-heat-electricity triple energy supply station, the utility model adopts the following technical scheme: a gas-thermal-electric triple energy supply station comprising: a water supply system; a compressed air system; a power generation and heat supply system; a waste heat utilization system; the pre-cooler is connected with the air compressor and releases high-pressure air waste heat to perform first-stage heating of water supply, the water replenishing heater is connected with the pump turbine and performs second-stage heating of water by using exhaust waste heat of the pump turbine, and the intercooler is connected with the air compressor and performs third-stage heating of water supply by using compression heat of the air compressor. The utility model has the beneficial effects that: the electric energy, the heat energy and the compressed air are supplied together, the unified management is realized, and the energy efficiency is improved; and waste heat is utilized in a grading manner, so that the efficiency of the system exergy is improved.
Description
Technical Field
The utility model belongs to the technical field of gas-heat-electricity triple supply, and particularly relates to a gas-heat-electricity triple supply station.
Background
With the continuous development of new energy, compressed air is used as an important power source and widely applied to the industrial fields of pharmacy, electric power, chemical industry, food and the like. The compressed air system is an indispensable public system in the thermal power generating unit, and the compressed air is needed by systems such as a heat engine, a thermal control system, a dust removal system, an instrument control system and a desulfurization system. Because the compressed air is easy to obtain and prepare, most of the current compressed air users generally adopt self-contained electric air compressor systems to prepare the compressed air. However, the small electric air compressor has low gas production efficiency, the electric air compressors in some industries lack the operation management of professionals, the air compressor has low operation efficiency, the compression heat of the air compressor is not utilized, and the energy loss of the system is large.
With the continuous popularization and implementation of industrial park integrated policies, industrial industry economy is continuously concentrated, and the importance of multiple energy supply energy sources standing in an industrial park is continuously highlighted, so that it is necessary to design an energy system capable of integrally providing various energy utilization.
At present, most of energy stations matched with each industrial park are combined heat and power stations, the combined heat and power stations can provide stable electric energy and heat energy for each user in the park, and a plant compressed air system and a user compressed air are mostly self-contained electric air compressors. The novel gas-heat-electricity triple energy supply station is born in an industrial park with a large amount of stable compressed air utilization amount, but the range of the current waste heat utilization is narrow, only the exhaust steam recovery of an air compressor turbine is realized, and the primary energy utilization rate is not high.
Based on this, provide a gas hot electricity trigeminy energy supply station, plan in unison the station with energy and waste heat, realize high-efficient, reliable, economic multipotency allies oneself with the confession.
Disclosure of Invention
The utility model provides a gas-heat-electricity triple energy supply station aiming at the defect of low energy utilization rate of the existing gas-heat-electricity triple energy supply station, which can be used for uniformly planning energy consumption and waste heat in the station and realizing efficient, reliable and economic multi-energy combined supply.
In order to achieve the purpose, the utility model adopts the following technical scheme: a gas-thermal-electric triple energy supply station, comprising:
the water supply system comprises a water supply pump, heat exchange equipment and a water supply pump turbine which are communicated;
the compressed air system comprises an air filter, an air compressor, post-treatment equipment and an air compressor turbine which are communicated, wherein the post-treatment equipment comprises a low-pressure steam exhaust heater, a pre-cooler and a drying tank;
the power generation and heat supply system comprises a power generation turbine and a power generator which are communicated with the heat exchange equipment;
the waste heat utilization system comprises a water supplementing heater and an intercooler which are communicated with each other;
the water supply system sends high-temperature and high-pressure water vapor to the air compressor turbine and the power generation turbine, the air compressor turbine drives the air compressor, the compressed air system sends processed compressed air to the compressed air main pipe, the power generation turbine does work to drive the power generator to generate power, the middle extracted steam of the power generation turbine is discharged into the middle-pressure heat supply main pipe, and the exhausted steam of the power generation turbine and the air compressor turbine drives the pump turbine to be discharged into the low-pressure heat supply main pipe;
the pre-cooler is communicated with the air compressor and releases high-pressure air waste heat to heat the water for the first stage, and/or the water supplementing heater is communicated with the pump turbine and utilizes the exhaust waste heat of the pump turbine to heat the water for the second stage, and/or the intercooler is communicated with the air compressor and utilizes the compression heat of the air compressor to heat the water for the third stage.
The gas-heat-electricity triple energy supply station is provided with a water supply system, a compressed air system, a power generation and heat supply system and a waste heat utilization system, and electric energy, heat energy and compressed air are supplied together and managed in a unified way, so that the energy efficiency is improved; the waste heat is utilized in a grading manner, the compression heat generated in the compression process of the air compressor is utilized to heat the feed water step by step, the low-pressure exhaust waste heat is utilized to heat the hot compressed air required by the post-treatment device, and the efficiency of the system exergy is improved.
As an improvement, the power generation and heat supply system further comprises a low-pressure temperature and pressure reducer and a medium-pressure temperature and pressure reducer, and main steam generated by the water supply system is respectively connected to the medium-pressure heat supply main pipe and the low-pressure heat supply main pipe after being sprayed with water, subjected to temperature and pressure reduction by the medium-pressure temperature and pressure reducer.
As an improvement, the water supply system further comprises a water supply bypass connected with the water replenishing heater, the water supply bypass is connected with the pre-cooler in parallel, and a pre-bypass valve is arranged on the water supply bypass.
As an improvement, the air compressor turbine drives the air compressor to compress air in multiple stages, compression heat generated after each stage of compression is subjected to waste heat utilization in the intercooler through heat exchange with water, and hot compressed air after the last stage of compression directly enters the post-processing equipment to be dried.
As a modification, the post-treatment equipment comprises two drying tanks connected in parallel, wherein the two drying tanks are switched to be used, one drying tank is used for drying air, and the other drying tank is used for hot blowing or cold blowing regeneration by using hot compressed air.
As an improvement, a temperature control valve is arranged between the low-pressure exhaust steam heater and the air compressor turbine.
As an improvement, in the hot blowing regeneration process, if the temperature of the hot compressed air is lower than the temperature requirement of the drying tank hot blowing regeneration, the hot compressed air is heated to a target temperature through a low-pressure exhaust steam heater, the low-pressure exhaust steam heater is used as a heat source, the optimal temperature required by the drying tank hot blowing regeneration is used as the set temperature of a temperature control valve, and the temperature control is realized through the temperature control valve and the low-pressure exhaust steam heater.
As an improvement, compressed air is firstly subjected to hot blowing regeneration of one drying tank, then dried by the other drying tank and discharged into a compressed air pipe network.
In the improvement, in the cold blowing regeneration process, hot compressed air exhausted by the air compressor is firstly cooled by a pre-cooler and then enters a drying tank for cold blowing, and the waste heat of the hot compressed air is heated by the pre-cooler to supply water for recycling.
As an improvement, the waste heat utilization system also comprises an intermediate bypass valve connected with the intercooler in parallel.
As an improvement, the water supply system, the compressed air system, the power generation and heat supply system and the waste heat utilization system comprise corresponding auxiliary equipment and pipelines.
The gas-heat-electricity triple energy supply station has the beneficial effects that: the electric energy, the heat energy and the compressed air are supplied together, so that the unified management is realized, and the energy efficiency is improved; the waste heat is utilized in a grading manner, the compression heat generated in the compression process of the air compressor is utilized to heat the feed water step by step, the low-pressure exhaust waste heat is utilized to heat the hot compressed air required by the post-treatment device, and the efficiency of the system exergy is improved.
Drawings
Fig. 1 is a block diagram of a gas-heat-electricity triple energy supply station according to a first embodiment of the present invention.
In the figure, 1, an air compressor; 2. an air compressor turbine; 3. a power generation turbine; 4. heat exchange equipment such as a water supply heating and boiler; 5. a generator; 6. a pump-feeding turbine; 7. a feed pump; 8. a temperature control valve; 9. an intercooler; 10. An intermediate bypass valve; 11. a water replenishing heater; 12. a pre-bypass valve; 13. a drying tank; 14. a pre-cooler; 15. A low pressure exhaust steam heater; 16. an air filter; 17. a low-pressure temperature and pressure reducer; 18. medium pressure temperature and pressure reducing device.
Detailed Description
The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the utility model.
Referring to fig. 1, the gas-heat-electricity triple power supply station of the present invention includes:
the water supply system comprises a water supply pump, heat exchange equipment and a water supply pump turbine which are communicated;
the compressed air system comprises an air filter, an air compressor, post-treatment equipment and an air compressor turbine which are communicated, wherein the post-treatment equipment comprises a low-pressure steam exhaust heater, a pre-cooler and a drying tank;
the power generation and heat supply system comprises a power generation turbine and a power generator which are communicated with the heat exchange equipment;
the waste heat utilization system comprises a water supplementing heater and an intercooler which are communicated with each other;
the water supply system sends high-temperature and high-pressure water vapor to the air compressor turbine and the power generation turbine, the air compressor turbine drives the air compressor, the compressed air system sends processed compressed air to the compressed air main pipe, the power generation turbine does work to drive the power generator to generate power, the middle extracted steam of the power generation turbine is discharged into the middle-pressure heat supply main pipe, and the exhausted steam of the power generation turbine and the air compressor turbine drives the pump turbine to be discharged into the low-pressure heat supply main pipe;
the pre-cooler is communicated with the air compressor and releases high-pressure air waste heat to heat the water for the first stage, and/or the water supplementing heater is communicated with the pump turbine and utilizes the exhaust waste heat of the pump turbine to heat the water for the second stage, and/or the intercooler is communicated with the air compressor and utilizes the compression heat of the air compressor to heat the water for the third stage.
The gas-heat-electricity triple energy supply station is provided with a compressed air system, a power generation and heat supply system and a waste heat utilization system, and electric energy, heat energy and compressed air are supplied together and managed in a unified manner, so that the energy efficiency is improved; the waste heat is utilized in a grading manner, the compression heat generated in the compression process of the air compressor is utilized to heat the feed water step by step, the low-pressure exhaust waste heat is utilized to heat the hot compressed air required by the post-treatment device, and the efficiency of the system exergy is improved.
Example one
Referring to fig. 1, a gas-heat-electricity triple power supply station according to a first embodiment of the present invention includes:
the water supply system comprises a water supply pump 7, heat exchange equipment and a pump steam turbine 6 which are communicated;
the compressed air system comprises an air filter 16, an air compressor 1, post-treatment equipment and an air compressor turbine 2 which are communicated, wherein the post-treatment equipment comprises a low-pressure exhaust steam heater 15, a pre-cooler 14 and a drying tank 13;
the power generation and heat supply system comprises a power generation turbine 3 and a power generator 5 which are communicated with the heat exchange equipment;
the waste heat utilization system comprises a water supplementing heater 11 and an intercooler 9 which are communicated;
the water supply system sends high-temperature and high-pressure water vapor to the air compressor turbine 2 and the power generation turbine 3, the air compressor turbine 2 drives the air compressor 1, the compressed air system sends processed compressed air to a compressed air main pipe, the power generation turbine 3 does work to drive the power generator 5 to generate power, the middle of the power generation turbine 3 extracts steam and discharges the steam into the middle-pressure heat supply main pipe, and the steam exhausted by the power generation turbine 3 and the air compressor turbine 2 drives the pump turbine 6 and discharges the steam into the low-pressure heat supply main pipe;
the pre-cooler 14 is communicated with the air compressor 1 and releases high-pressure air waste heat to heat water for the first stage, the water supplementing heater 11 is communicated with the pumping turbine 6 and utilizes the exhaust steam waste heat of the pumping turbine 6 to heat water for the second stage, and the intercooler 9 is communicated with the air compressor 1 and utilizes the compression heat of the air compressor 1 to heat water for the third stage.
In this embodiment, the power generation and heat supply system further includes a low-pressure temperature and pressure reducer 17 and a medium-pressure temperature and pressure reducer 18, and main steam generated by the water supply system is further sprayed with water through the medium-pressure temperature and pressure reducer 18 and the low-pressure temperature and pressure reducer 17 to be respectively connected to the medium-pressure heat supply main pipe and the low-pressure heat supply main pipe.
In this embodiment, the water supply system further includes a water supply bypass connected to the water supplement heater 11, the water supply bypass is connected in parallel to the pre-cooler 14, and the water supply bypass is provided with a pre-bypass valve 12.
In this embodiment, air compressor turbine 2 drives air compressor 1 carries out multistage compression to the air, and the compression heat that produces after each level compression is in carry out waste heat utilization with water heat transfer in intercooler 9, the hot compressed air that the last one-level compression was accomplished directly gets into aftertreatment equipment carries out drying process.
In this embodiment, the post-treatment apparatus includes two parallel drying tanks 13, and the two drying tanks 13 are switched to use, one for drying air and the other for hot-blowing or cold-blowing regeneration using hot compressed air.
In this embodiment, a temperature control valve 8 is provided between the low-pressure exhaust steam heater 15 and the air compressor turbine 2.
In this embodiment, in the hot blowing regeneration process, if the temperature of the hot compressed air is lower than the temperature requirement of the hot blowing regeneration of the drying tank 13, the hot compressed air is heated to the target temperature through the low-pressure exhaust steam heater 15, the low-pressure exhaust steam heater 15 is used as a heat source, the optimal temperature required by the hot blowing regeneration of the drying tank 13 is used as the set temperature of the temperature control valve 8, and the temperature control is realized through the temperature control valve 8 and the low-pressure exhaust steam heater 15.
In this embodiment, the compressed air is first regenerated by hot blowing in one drying tank 13, and then dried in the other drying tank 13 and discharged into the compressed air pipe network.
In this embodiment, in the cold blowing regeneration process, the hot compressed air discharged from the air compressor 1 is cooled by the pre-cooler 14 and then enters the drying tank 13 for cold blowing, and the waste heat of the hot compressed air is heated by the pre-cooler 14 to supply water for recycling. Renewable after-treatment devices are well-established and commercially available, and the system flow is not set forth herein.
In this embodiment, the waste heat utilization system further includes an intermediate bypass valve 10 connected in parallel with the intercooler 9.
In this embodiment, the water supply system, the compressed air system, the power generation and heat supply system, and the waste heat utilization system include corresponding auxiliary devices and pipelines.
In this embodiment, the feed water is subjected to first-stage heating by absorbing the waste heat of the compressed air by the pre-cooler 14 of the post-treatment device, and then is subjected to second-stage heating by absorbing the exhaust waste heat of the pump turbine 6 by the moisturizing heater 11, and then is subjected to third-stage heating by absorbing the compression heat generated in the process of compressing the air by the air compressor 1 by the intercooler 9. The first-stage heated feed water is boosted by the steam feed pump 7 and then enters the feed water heating and boiler and other heat exchange equipment 4 to heat high-temperature and high-pressure main steam, and the main steam enters the power generation turbine 3 to do work. When the pre-cooler 14 is overhauled or has a fault, the pre-bypass valve 12 of the pre-cooler 14 can be opened to ensure that a water path for supplying water is smooth, and similarly, when the inter-cooler 14 is overhauled or has a fault, the inter-bypass valve 10 can be opened to ensure that the water supply is smooth, so that the water cut-off of the system is avoided.
In this embodiment, high-temperature and high-pressure main steam enters the air compressor turbine 2 and the power generation turbine 3 to do work to drive the generator 5 and the air compressor 1 to work respectively. The power generation steam turbine 3 adopts a back pressure steam turbine, the power generator 5 is coaxially driven to do work to generate electric energy for power utilization in a plant and an external power grid of the plant, a middle steam extraction and exhaust of the power generation steam turbine 3 supplies a middle-pressure heat supply main pipe to a user needing heat outside the plant, the temperature and the pressure of the middle-pressure steam extraction are extracted from the middle stage of the power generation steam turbine 3 according to the requirement of the user, and the temperature and the pressure of the low-pressure steam extraction also determine proper back pressure and steam extraction temperature by selecting the model of the power generation steam turbine 3 according to the requirement of the user. The air compressor turbine 2 and the air compressor 1 are coaxially arranged to drive the air compressor, the air compressor turbine 1 does work, and exhaust steam of the air compressor turbine 2 is supplied to users through a low-pressure heat supply main pipe.
The gas-heat-electricity triple energy supply station has the beneficial effects that: the electric energy, the heat energy and the compressed air are supplied together, so that the unified management is realized, and the energy efficiency is improved; the waste heat is utilized in a grading manner, the compression heat generated in the compression process of the air compressor is utilized to heat the feed water step by step, the low-pressure exhaust waste heat is utilized to heat the hot compressed air required by the post-treatment device, and the efficiency of the system exergy is improved.
While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto but is intended to cover all modifications and equivalents as may be included within the spirit and scope of the utility model. Any modifications which do not depart from the functional and structural principles of the utility model are intended to be included within the scope of the claims.
Claims (10)
1. The utility model provides a gas thermoelectric trigeminy energy supply station which characterized in that: the gas-heat-electricity triple energy supply station comprises:
the water supply system comprises a water supply pump (7), heat exchange equipment and a pump steam turbine (6) which are communicated with each other;
the compressed air system comprises an air filter (16), an air compressor (1), aftertreatment equipment and an air compressor turbine (2) which are communicated, wherein the aftertreatment equipment comprises a low-pressure exhaust steam heater (15), a pre-cooler (14) and a drying tank (13);
the power generation and heat supply system comprises a power generation turbine (3) and a power generator (5) which are communicated with the heat exchange equipment;
the waste heat utilization system comprises a water supplementing heater (11) and an intercooler (9) which are communicated with each other;
the water supply system sends high-temperature and high-pressure water vapor to the air compressor turbine (2) and the power generation turbine (3), the air compressor turbine (2) drives the air compressor (1), the compressed air system sends processed compressed air to a compressed air main pipe, the power generation turbine (3) applies work to drive the generator (5) to generate electricity, the middle of the power generation turbine (3) extracts steam and discharges the steam into a medium-pressure heat supply main pipe, and the exhaust steam of the power generation turbine (3) and the air compressor turbine (2) drives the pump steam turbine (6) to discharge into a low-pressure heat supply main pipe;
the pre-cooler (14) is communicated with the air compressor (1) and releases high-pressure air waste heat to perform first-stage heating of water supply, and/or the water supplement heater (11) is communicated with the pump steam turbine (6) and performs second-stage heating of water by using exhaust steam waste heat of the pump steam turbine (6), and/or the intercooler (9) is communicated with the air compressor (1) and performs third-stage heating of water supply by using compression heat of the air compressor (1).
2. A gas-thermal-electric triple energy supply station according to claim 1, characterized in that: the power generation and heat supply system further comprises a low-pressure temperature and pressure reducer (17) and a medium-pressure temperature and pressure reducer (18), and main steam generated by the water supply system is further connected into the medium-pressure heat supply main pipe and the low-pressure heat supply main pipe respectively after the medium-pressure temperature and pressure reducer (18) and the low-pressure temperature and pressure reducer (17) spray water to reduce temperature and pressure.
3. A gas-thermal-electric triple energy supply station according to claim 1, characterized in that: the water supply system also comprises a water supply bypass connected with the water replenishing heater (11), the water supply bypass is connected with the preposed cooler (14) in parallel, and a preposed bypass valve (12) is arranged on the water supply bypass.
4. A gas-thermal-electric triple energy supply station according to claim 1, characterized in that: air compressor machine steam turbine (2) drive air compressor machine (1) carries out multistage compression to the air, and the compression heat that produces after each level compression is in carry out waste heat utilization with water heat transfer in intercooler (9), the hot compressed air that the last one-level compression was accomplished directly gets into aftertreatment equipment carries out drying process.
5. A gas-thermal-electric triple energy supply station according to claim 1, characterized in that: the post-treatment equipment comprises two drying tanks (13) which are connected in parallel, wherein the two drying tanks (13) are switched to use, one drying tank is used for drying air, and the other drying tank is used for hot blowing or cold blowing regeneration by utilizing hot compressed air.
6. A gas-thermal-electric triple energy supply station according to claim 5, characterized in that: and a temperature control valve (8) is arranged between the low-pressure exhaust steam heater (15) and the air compressor turbine (2).
7. A gas-thermal-electric triple energy supply station according to claim 6, characterized in that: in the hot blowing regeneration process, if the temperature of hot compressed air is lower than the temperature requirement of the hot blowing regeneration of the drying tank (13), the hot compressed air is heated to a target temperature through the low-pressure steam exhaust heater (15), the low-pressure steam exhaust heater (15) is used as a heat source, the optimal temperature required by the hot blowing regeneration of the drying tank (13) is used as the set temperature of the temperature control valve (8), and the temperature control is realized through the temperature control valve (8) and the low-pressure steam exhaust heater (15).
8. A gas-thermal-electric triple energy supply station according to claim 5, characterized in that: the compressed air is firstly subjected to hot blowing regeneration of one drying tank (13), then is dried by the other drying tank (13) and then is discharged into a compressed air pipe network.
9. A gas-thermal-electric triple energy supply station according to claim 5, characterized in that: in the cold blowing regeneration process, hot compressed air exhausted by the air compressor (1) is firstly cooled by the front cooler (14) and then enters the drying tank (13) for cold blowing, and the waste heat of the hot compressed air is heated by the front cooler (14) to supply water for recycling.
10. A gas-thermal-electric triple energy supply station according to claim 1, characterized in that: the waste heat utilization system also comprises an intermediate bypass valve (10) which is connected with the intercooler (9) in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220418382.XU CN216691199U (en) | 2022-02-28 | 2022-02-28 | Gas-heat-electricity triple energy supply station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220418382.XU CN216691199U (en) | 2022-02-28 | 2022-02-28 | Gas-heat-electricity triple energy supply station |
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| CN216691199U true CN216691199U (en) | 2022-06-07 |
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| CN202220418382.XU Active CN216691199U (en) | 2022-02-28 | 2022-02-28 | Gas-heat-electricity triple energy supply station |
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