CN207538880U - A kind of coal unit coupled biological matter gas power generation heat integration utilizes system - Google Patents
A kind of coal unit coupled biological matter gas power generation heat integration utilizes system Download PDFInfo
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Abstract
本实用新型公开了一种燃煤机组耦合生物质气发电热量综合利用系统,生物质气化系统、生物质气管道、换热器、汽轮机、汽轮机抽汽管道、燃煤锅炉、供电系统；所述生物质气化系统经生物质气管道连接换热器后，再连接燃煤锅炉；汽轮机抽汽管道连接换热器后，再连接汽轮器，汽轮器连接供电系统。本实用新型的有益效果：本实用新型有效利用了生物质气化系统生成的高温气化气热量，提高系统能量利用效率；增加了系统发电能力，同时又能满足热用户需求，可根据实际情况满足附近充电桩电量需求；有效降低生物质气化气的温度，节省了生物质气阀门、管道等元件成本。
The utility model discloses a coal-fired unit coupling biomass gas power generation heat comprehensive utilization system, a biomass gasification system, a biomass gas pipeline, a heat exchanger, a steam turbine, a steam turbine extraction pipeline, a coal-fired boiler, and a power supply system; The biomass gasification system described above is connected to the heat exchanger through the biomass gas pipeline, and then connected to the coal-fired boiler; after the steam extraction pipeline of the steam turbine is connected to the heat exchanger, it is then connected to the steam turbine, and the steam turbine is connected to the power supply system. Beneficial effects of the utility model: the utility model effectively utilizes the heat of high-temperature gasification gas generated by the biomass gasification system, improves the energy utilization efficiency of the system; increases the power generation capacity of the system, and at the same time can meet the needs of heat users, and can be used according to the actual situation Meet the power demand of nearby charging piles; effectively reduce the temperature of biomass gasification gas, and save the cost of biomass gas valves, pipes and other components.
Description
技术领域technical field
本实用新型涉及一种发电热量综合利用系统，尤其涉及的是一种燃煤机组耦合生物质气发电热量综合利用系统。The utility model relates to a comprehensive utilization system for power generation heat, in particular to a comprehensive utilization system for coal-fired unit coupling biomass gas power generation heat.
背景技术Background technique
生物质气化耦合燃煤发电生物质气化炉出口气化气温度较高，可达700-750℃左右，高温生物质气化气对输送管道、阀门及其他元件要求较高，价格昂贵，气化气如果先经过冷却，即可利用这部分热量，又能降低对管道等元件的要求，一举两得。The gasification gas temperature at the outlet of biomass gasification coupled with coal-fired power generation biomass gasification furnace is relatively high, which can reach about 700-750°C. If the vaporized gas is cooled first, this part of the heat can be used, and the requirements for components such as pipelines can be reduced, killing two birds with one stone.
对于供热机组，一般从汽轮机四级或五级抽汽进入供热母管供热，虽能满足热用户需求，但会降低机组的做功发电能力。生物质高温气化气对输气管道、阀门等元件要求高，如果单纯用冷却水冷却，无法将这部分热量有效利用。For heating units, steam is generally extracted from the fourth or fifth stage of the steam turbine into the heating main pipe for heating. Although it can meet the needs of heat users, it will reduce the power generation capacity of the unit. Biomass high-temperature gasification gas has high requirements on gas transmission pipelines, valves and other components. If it is simply cooled with cooling water, this part of the heat cannot be effectively used.
实用新型内容Utility model content
本实用新型所要解决的技术问题在于提供了一种将生物质气冷却与汽轮机抽汽加热做功两者结合，可有效降低生物质气温度，提升系统做功能力，同时满足热用户需求的燃煤机组耦合生物质气发电热量综合利用系统。The technical problem to be solved by the utility model is to provide a coal-fired system that combines the cooling of the biomass gas with the steam extraction and heating of the steam turbine, which can effectively reduce the temperature of the biomass gas, improve the working capacity of the system, and at the same time meet the needs of heat users. The unit is coupled with the comprehensive utilization system of biomass gas power generation and heat.
本实用新型是通过以下技术方案解决上述技术问题的：本实用新型包括生物质气化系统、生物质气管道、换热器、汽轮机、汽轮机抽汽管道、燃煤锅炉、供电系统；所述生物质气化系统经生物质气管道连接换热器后，再连接燃煤锅炉；汽轮机抽汽管道连接换热器后，再连接汽轮器，汽轮器连接供电系统。The utility model solves the above-mentioned technical problems through the following technical solutions: the utility model includes a biomass gasification system, a biomass gas pipeline, a heat exchanger, a steam turbine, a steam turbine extraction pipeline, a coal-fired boiler, and a power supply system; After the material gasification system is connected to the heat exchanger through the biomass gas pipeline, it is then connected to the coal-fired boiler; after the steam extraction pipeline of the steam turbine is connected to the heat exchanger, it is then connected to the steam turbine, and the steam turbine is connected to the power supply system.
优选的，还包括供热系统，所述供热系统连接在汽轮机。Preferably, a heating system is also included, and the heating system is connected to the steam turbine.
优选的，所述汽轮机为小背压汽轮机。Preferably, the steam turbine is a small back pressure steam turbine.
优选的，在所述汽轮机抽汽管道上设置用于调节抽汽量的调节阀。Preferably, a regulating valve for adjusting the steam extraction volume is provided on the steam extraction pipeline of the steam turbine.
优选的，所述换热器为气-气换热器。Preferably, the heat exchanger is an air-air heat exchanger.
优选的，所述燃煤锅炉上设有气化气喷口，所述生物质气管道经换热器后连接到气化气喷口。Preferably, the coal-fired boiler is provided with a gasification gas nozzle, and the biomass gas pipeline is connected to the gasification gas nozzle after passing through a heat exchanger.
优选的，还包括用于控制汽轮机发电量和热负荷情况的控制器，连接在汽轮机和供电系统之间。Preferably, it also includes a controller for controlling the power generation and thermal load of the steam turbine, which is connected between the steam turbine and the power supply system.
优选的，所述供电系统为并入电网或分布式充电桩。Preferably, the power supply system is connected to the grid or distributed charging piles.
本实用新型相比现有技术具有以下优点：Compared with the prior art, the utility model has the following advantages:
1、本发明有效利用了生物质气化系统生成的高温气化气热量，提高系统能量利用效率。1. The present invention effectively utilizes the heat of high-temperature gasification gas generated by the biomass gasification system, and improves the energy utilization efficiency of the system.
2、增加了系统发电能力，同时又能满足热用户需求，可根据实际情况满足附近充电桩电量需求。2. Increase the power generation capacity of the system, and at the same time meet the needs of thermal users, and can meet the power demand of nearby charging piles according to the actual situation.
3、有效降低生物质气化气的温度，节省了生物质气阀门、管道等元件成本。3. Effectively reduce the temperature of biomass gasification gas, saving the cost of biomass gas valves, pipelines and other components.
附图说明Description of drawings
图1是本实用新型的结构示意图。Fig. 1 is a structural representation of the utility model.
生物质气化系统1、生物质气管道11、换热器2、汽轮机3、汽轮机抽汽管道31、调节阀32、燃煤锅炉4、供电系统5、并入电网51、分布式充电桩52、供热系统6、控制器7Biomass gasification system 1, biomass gas pipeline 11, heat exchanger 2, steam turbine 3, steam turbine extraction pipeline 31, regulating valve 32, coal-fired boiler 4, power supply system 5, grid connection 51, distributed charging pile 52 , heating system 6, controller 7
具体实施方式Detailed ways
下面对本实用新型的实施例作详细说明，本实施例在以本实用新型技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本实用新型的保护范围不限于下述的实施例。The following is a detailed description of the embodiments of the present utility model. This embodiment is implemented on the premise of the technical solution of the present utility model, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present utility model is not limited to the following the described embodiment.
如图1所示，本实施例包括生物质气化系统1、生物质气管道11、换热器2、汽轮机3、汽轮机抽汽管道31、燃煤锅炉4、供电系统5；所述生物质气化系统1经生物质气管道11连接换热器2后，再连接燃煤锅炉4；汽轮机抽汽管道31连接换热器2后，再连接汽轮器3，汽轮器3连接供电系统5。所述汽轮机3为小背压汽轮机。在所述汽轮机抽汽管道31上设置用于调节抽汽量的调节阀32。所述换热器2为气-气换热器。所述燃煤锅炉4上设有气化气喷口，所述生物质气管道11经换热器2后连接到气化气喷口。所述供电系统5为并入电网51或分布式充电桩52。As shown in Figure 1, this embodiment includes a biomass gasification system 1, a biomass gas pipeline 11, a heat exchanger 2, a steam turbine 3, a steam turbine extraction pipeline 31, a coal-fired boiler 4, and a power supply system 5; The gasification system 1 is connected to the heat exchanger 2 through the biomass gas pipeline 11, and then connected to the coal-fired boiler 4; after the steam extraction pipeline 31 of the steam turbine is connected to the heat exchanger 2, it is then connected to the steam turbine 3, and the steam turbine 3 is connected to the power supply system 5. The steam turbine 3 is a small back pressure steam turbine. A regulating valve 32 for regulating the steam extraction volume is arranged on the steam extraction pipeline 31 of the steam turbine. The heat exchanger 2 is a gas-gas heat exchanger. The coal-fired boiler 4 is provided with a gasification gas nozzle, and the biomass gas pipeline 11 is connected to the gasification gas nozzle after passing through the heat exchanger 2 . The power supply system 5 is integrated into the grid 51 or a distributed charging pile 52 .
本实用新型还包括供热系统6，所述供热系统6连接在汽轮机3。还包括用于控制汽轮机3发电量和热负荷情况的控制器7，连接在汽轮机3和供电系统5之间。The utility model also includes a heating system 6 connected to the steam turbine 3 . It also includes a controller 7 for controlling the power generation of the steam turbine 3 and the thermal load, which is connected between the steam turbine 3 and the power supply system 5 .
本实用新型工作过程如下：The utility model work process is as follows:
由汽轮机3抽汽并经过汽轮机抽汽管道31上的调节阀32进行调节抽汽量，进入气-气换热器与通过生物质气管11道进入的高温生物质气进行换热，加热后的抽汽进入小背压汽轮机做功发电，做功后的排汽进入供热蒸汽管道供热。冷却后的生物质气经过生物质气管道进入燃煤锅炉4的气化气喷口，参与燃烧。小背压汽轮机的发电量根据需求及热负荷情况由控制器7控制，供电系统5可以为并入电网或者分配给附近分布式充电桩充电两种模式。The steam is extracted by the steam turbine 3 and passed through the regulating valve 32 on the steam extraction pipeline 31 of the steam turbine to adjust the extraction steam volume, and enters the gas-gas heat exchanger to exchange heat with the high-temperature biomass gas entering through the biomass gas pipe 11, and the heated The extracted steam enters the small back pressure steam turbine to generate power, and the exhaust steam after the work enters the heating steam pipeline for heating. The cooled biomass gas enters the gasification gas nozzle of the coal-fired boiler 4 through the biomass gas pipeline to participate in combustion. The power generation of the small backpressure steam turbine is controlled by the controller 7 according to the demand and thermal load, and the power supply system 5 can be connected to the grid or distributed to nearby distributed charging piles for charging.
本实用新型的生物质气化气通过加热汽轮机3抽汽，使得热量得以二次利用，提高能量利用效率，同时冷却后的生物质气化气，提高了生物质气管道11、阀门的使用寿命，降低了元件成本；再者汽轮机抽汽通过生物质气化气加热后，进入小背压汽轮机做功，增加系统发电能力，发出的电量可就近分配给分布式充电桩或并入市电电网。The biomass gasification gas of the utility model extracts steam through the heating steam turbine 3, so that the heat can be used twice, and the energy utilization efficiency is improved. At the same time, the cooled biomass gasification gas improves the service life of the biomass gas pipeline 11 and the valve. , which reduces the cost of components; moreover, after the steam extracted by the steam turbine is heated by the biomass gasification gas, it enters the small back pressure steam turbine to do work, increasing the power generation capacity of the system.
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372602A (en) * | 2018-09-07 | 2019-02-22 | 上海明华电力技术工程有限公司 | System and method for coupling steam between biomass incinerator and coal-fired unit |
| CN112049700A (en) * | 2020-07-23 | 2020-12-08 | 华电电力科学研究院有限公司 | A comprehensive energy system and its control method utilizing the residual energy of high-parameter heating steam in co-generation of heat and power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372602A (en) * | 2018-09-07 | 2019-02-22 | 上海明华电力技术工程有限公司 | System and method for coupling steam between biomass incinerator and coal-fired unit |
| CN109372602B (en) * | 2018-09-07 | 2024-01-30 | 上海明华电力科技有限公司 | Steam coupling system and method for biomass incinerator and coal-fired unit |
| CN112049700A (en) * | 2020-07-23 | 2020-12-08 | 华电电力科学研究院有限公司 | A comprehensive energy system and its control method utilizing the residual energy of high-parameter heating steam in co-generation of heat and power |
| CN112049700B (en) * | 2020-07-23 | 2021-03-26 | 华电电力科学研究院有限公司 | Comprehensive energy system utilizing cogeneration of high-parameter heat supply steam complementary energy and control method thereof |
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