CN208042106U - A gas high temperature and high pressure power generation system - Google Patents
A gas high temperature and high pressure power generation system Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000003034 coal gas Substances 0.000 claims abstract description 15
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000009865 steel metallurgy Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
本实用新型涉及钢铁冶金技术领域，具体涉及一种煤气高温高压发电系统，包括煤气锅炉燃烧利用模块、蒸汽余热利用模块和汽轮机发电模块，煤气锅炉燃烧利用模块包括煤气锅炉、汽包、第一蒸汽发生器、第二蒸汽发生器、过热器、第一省煤器、第二省煤器、第一空气预热器、第二空气预热器、送风机、风门、煤气加热器、热空气管道以及蝶阀，通过设置煤气加热器对低温煤气进行加热，进而提高煤气燃烧所需温度，提高过热蒸汽参数，提高煤气燃烧所需温度，进一步提高燃烧效率，最终提高煤气发电系统发电量。
The utility model relates to the technical field of iron and steel metallurgy, and specifically to a coal gas high-temperature and high-pressure power generation system, comprising a coal gas boiler combustion and utilization module, a steam waste heat utilization module and a steam turbine power generation module, wherein the coal gas boiler combustion and utilization module comprises a coal gas boiler, a steam drum, a first steam generator, a second steam generator, a superheater, a first economizer, a second economizer, a first air preheater, a second air preheater, a blower, a damper, a coal gas heater, a hot air pipeline and a butterfly valve, wherein the coal gas heater is provided to heat the low-temperature coal gas, thereby increasing the temperature required for the combustion of the coal gas, increasing the parameters of the superheated steam, increasing the temperature required for the combustion of the coal gas, further increasing the combustion efficiency, and finally increasing the power generation of the coal gas power generation system.
Description
技术领域technical field
本实用新型涉及钢铁冶金技术领域，具体涉及一种煤气高温高压发电系统。The utility model relates to the technical field of iron and steel metallurgy, in particular to a gas high-temperature and high-pressure power generation system.
背景技术Background technique
目前，我国钢铁行业经过多年的快速发展，产业和技术上都有明显的进步和提高，钢铁行业每年都要消耗大量的能源，与其他技术先进西方国家相比，特别在钢材消耗方面还有很多需要提高的空间，还有很大的差距，虽然很多企业节能意识的增强，很多企业利用高炉煤气进行发电，但是现在的煤气利用发电系统利用还是很低，导致能源利用率不高，造成过多的能源浪费并造成环境污染。At present, after years of rapid development, my country's iron and steel industry has made significant progress and improvement in industry and technology. The iron and steel industry consumes a lot of energy every year. Compared with other technologically advanced Western countries, there is still a lot in steel consumption There is still room for improvement, and there is still a big gap. Although many companies have increased awareness of energy conservation and many companies use blast furnace gas for power generation, the current gas utilization power generation system is still very low, resulting in low energy utilization and excessive energy consumption. waste of energy and cause environmental pollution.
目前，现有的煤气发电没有做到有效综合的余热利用，例如：煤气发电采用蒸汽低参数的发电系统，影响了能源的转化效率，煤气燃烧效率较低，浪费了煤气能源的有效利用。At present, the existing gas power generation has not achieved effective and comprehensive utilization of waste heat. For example, the gas power generation system adopts a low-parameter steam power generation system, which affects the conversion efficiency of energy, and the gas combustion efficiency is low, which wastes the effective use of gas energy.
实用新型内容Utility model content
本实用新型的目的在于针对现有技术中的不足，而提供一种煤气高温高压发电系统，采用该系统能够解决煤气燃烧效率低下的问题。The purpose of the utility model is to provide a gas high-temperature and high-pressure power generation system aimed at the deficiencies in the prior art, and the system can solve the problem of low gas combustion efficiency.
本实用新型的目的通过以下技术方案实现：一种煤气高温高压发电系统，包括煤气锅炉燃烧利用模块、蒸汽余热利用模块和汽轮机发电模块；煤气锅炉燃烧利用模块包括煤气锅炉、汽包、第一蒸汽发生器、第二蒸汽发生器、过热器、第一省煤器、第二省煤器、第一空气预热器、第二空气预热器、送风机、风门、煤气加热器、热空气管道以及蝶阀；其中，第一蒸汽发生器与第二蒸汽发生器相互连通并铺设于煤气锅炉内部的上方，第一蒸汽发生器与第二蒸汽发生器通过上升管与下降管与汽包相连；所述过热器位于煤气锅炉内部的上方，过热器与汽包连通，汽包通过主蒸汽管道与汽轮机发电模块的汽轮机连通；所述第一省煤器、第二省煤器、第一空气预热器和第二空气预热器均位于煤气锅炉炉膛燃烧室的烟道中，并且依次从上至下排布；热空气管道的一段连通第二空气预热器，另一端通过蝶阀与煤气锅炉的进气端相连；送风机与第一空气预热器连通来供给冷空气；烟气出口管道连通煤气锅炉的烟气出口处，并通过引风机与烟囱连通；煤气管道与煤气锅炉的进气端连通，蒸汽余热利用模块包括煤气加热器，煤气加热器的一端安装在煤气管道，另一端安装在烟气出口管道，以利用烟气余热加热煤气管道中的煤气，汽轮机发电模块包括述汽轮机、发电机、冷凝器、冷却塔、循环水泵、凝结水泵、第一低压加热器、第二低压加热器、除氧器、给水泵，高压加热器；汽轮机与发电机连接，汽轮机与冷凝器的进气口连通，冷却塔与循环水泵通过冷却管道连通，冷却管道有部分置入冷凝器的内部进行换热冷却，冷凝器的出水口通过凝结水泵与第一低压加热器、第二低压加热器、除氧器连通，除氧器通过给水泵与高压加热器连通，所述高压加热器与第一省煤器连通。The purpose of the utility model is achieved through the following technical solutions: a gas high temperature and high pressure power generation system, including a gas boiler combustion utilization module, a steam waste heat utilization module and a steam turbine power generation module; the gas boiler combustion utilization module includes a gas boiler, a steam drum, a first steam generator, second steam generator, superheater, first economizer, second economizer, first air preheater, second air preheater, blower, damper, gas heater, hot air duct and Butterfly valve; wherein, the first steam generator and the second steam generator communicate with each other and are laid above the inside of the gas boiler, and the first steam generator and the second steam generator are connected to the steam drum through the rising pipe and the descending pipe; the said The superheater is located above the interior of the gas boiler, and the superheater communicates with the steam drum, and the steam drum communicates with the steam turbine of the steam turbine power generation module through the main steam pipeline; the first economizer, the second economizer, and the first air preheater and the second air preheater are located in the flue of the combustion chamber of the gas boiler furnace, and are arranged sequentially from top to bottom; one section of the hot air pipe is connected to the second air preheater, and the other end is connected to the gas boiler air intake through a butterfly valve. The blower is connected to the first air preheater to supply cold air; the flue gas outlet pipe is connected to the flue gas outlet of the gas boiler, and is connected to the chimney through the induced draft fan; the gas pipe is connected to the inlet end of the gas boiler, and the steam The waste heat utilization module includes a gas heater. One end of the gas heater is installed on the gas pipeline, and the other end is installed on the flue gas outlet pipe to heat the gas in the gas pipeline by using the waste heat of the flue gas. The steam turbine power generation module includes the steam turbine, generator, condensing device, cooling tower, circulating water pump, condensate pump, first low-pressure heater, second low-pressure heater, deaerator, feed water pump, high-pressure heater; the steam turbine is connected to the generator, and the steam turbine is connected to the air inlet of the condenser. The cooling tower communicates with the circulating water pump through the cooling pipe, and part of the cooling pipe is placed inside the condenser for heat exchange and cooling. The water outlet of the condenser communicates with the first low-pressure heater, the second low-pressure heater, and the deaerator through the condensate pump , the deaerator communicates with the high-pressure heater through the feedwater pump, and the high-pressure heater communicates with the first economizer.
其中，所述第一省煤器为低温省煤器。Wherein, the first economizer is a low-temperature economizer.
其中，所述第二省煤器为高温省煤器。Wherein, the second economizer is a high temperature economizer.
其中，风门设置有气动控制模块，气动控制模块包括依次连通设置的压缩空气机、压缩空气罐、C级过热器、冷冻式干燥机、第一T级过滤器和第二T级过滤器，第二T级过滤器通过管道与风门连通。Among them, the damper is provided with a pneumatic control module, and the pneumatic control module includes a compressed air machine, a compressed air tank, a C-level superheater, a refrigerated dryer, a first T-level filter and a second T-level filter, which are sequentially connected. The second T-level filter communicates with the damper through a pipeline.
本实用新型的有益效果：本申请的煤气高温高压发电系统中，通过设置煤气加热器对低温煤气进行加热，进而提高煤气燃烧所需温度，提高过热蒸汽参数，提高煤气燃烧所需温度，进一步提高燃烧效率，最终提高煤气发电系统发电量。Beneficial effects of the utility model: In the gas high-temperature and high-pressure power generation system of the present application, the low-temperature gas is heated by setting a gas heater, thereby increasing the temperature required for gas combustion, increasing the parameters of superheated steam, increasing the temperature required for gas combustion, and further improving Combustion efficiency, and ultimately improve the power generation of the gas power generation system.
附图说明Description of drawings
利用附图对本实用新型作进一步说明，但附图中的实施例不构成对本实用新型的任何限制，对于本领域的普通技术人员，在不付出创造性劳动的前提下，还可以根据以下附图获得其它的附图。Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.
图1为本实用新型的一种煤气高温高压发电系统的结构示意图。Fig. 1 is a structural schematic diagram of a coal gas high temperature and high pressure power generation system of the present invention.
图2为本实用新型的一种煤气高温高压发电系统的蝶阀的部分结构示意图。Fig. 2 is a partial structural schematic diagram of a butterfly valve of a gas high temperature and high pressure power generation system of the present invention.
附图标记：汽轮机1、煤气管道101、烟气出口管道102、热空气管道103、发电机2、冷凝器3、冷却塔4、循环水泵5、凝结水泵6、第一低压加热器7、第二低压加热器8、除氧器9、给水泵10、高压加热器11、第一空气预热器12、第一省煤器13、第二空气预热器14、第二省煤器15、汽包16、第一蒸发器17、第二蒸发器18、过热器19、蝶阀20、烟囱21、引风机22、煤气加热器23、送风机24、风门25、煤气锅炉26。Reference signs: steam turbine 1, gas pipeline 101, flue gas outlet pipeline 102, hot air pipeline 103, generator 2, condenser 3, cooling tower 4, circulating water pump 5, condensate water pump 6, first low-pressure heater 7, second 2. Low pressure heater 8, deaerator 9, feed water pump 10, high pressure heater 11, first air preheater 12, first economizer 13, second air preheater 14, second economizer 15, Steam drum 16, first evaporator 17, second evaporator 18, superheater 19, butterfly valve 20, chimney 21, induced draft fan 22, gas heater 23, blower 24, damper 25, gas boiler 26.
具体实施方式Detailed ways
结合以下实施例对本实用新型作进一步描述。The utility model is further described in conjunction with the following examples.
本实用新型的一种煤气高温高压发电系统的具体实施方式，如图1和图2所示，包括煤气锅炉燃烧利用模块、蒸汽余热利用模块和汽轮机发电模块；煤气锅炉燃烧利用模块包括煤气锅炉26、汽包16、第一蒸汽发生器17、第二蒸汽发生器18、过热器19、第一省煤器13、第二省煤器15、第一空气预热器12、第二空气预热器14、送风机24、风门25、煤气加热器23、热空气管道103以及蝶阀20；其中，第一蒸汽发生器17与第二蒸汽发生器18相互连通并铺设于煤气锅炉26内部的上方，第一蒸汽发生器17与第二蒸汽发生器18通过上升管与下降管与汽包16相连；过热器19位于煤气锅炉26内部的上方，过热器19与汽包16连通，汽包16通过主蒸汽管道与汽轮机发电模块的汽轮机1连通；第一省煤器13、第二省煤器15、第一空气预热器12和第二空气预热器14均位于煤气锅炉26炉膛燃烧室的烟道中，并且依次从上至下排布；热空气管道103的一段连通第二空气预热器14，另一端通过蝶阀20与煤气锅炉26的进气端相连；送风机24与第一空气预热器12连通来供给冷空气；烟气出口管道102连通煤气锅炉26的烟气出口处，并通过引风机22与烟囱21连通；煤气管道101与煤气锅炉26的进气端连通，蒸汽余热利用模块包括煤气加热器23，煤气加热器23的一端安装在煤气管道101，另一端安装在烟气出口管道102，以利用烟气余热加热煤气管道101中的煤气，汽轮机发电模块包括述汽轮机1、发电机2、冷凝器3、冷却塔4、循环水泵5、凝结水泵6、第一低压加热器7、第二低压加热器8、除氧器9、给水泵10，高压加热器11；汽轮机1与发电机2连接，汽轮机1与冷凝器3的进气口连通，冷却塔4与循环水泵5通过冷却管道连通，冷却管道有部分置入冷凝器3的内部进行换热冷却，冷凝器3的出水口通过凝结水泵6与第一低压加热器7、第二低压加热器8、除氧器9连通，除氧器9通过给水泵 10与高压加热器11连通，高压加热器11与第一省煤器13连通。A specific embodiment of a gas high temperature and high pressure power generation system of the present utility model, as shown in Figure 1 and Figure 2, includes a gas boiler combustion utilization module, a steam waste heat utilization module and a steam turbine power generation module; the gas boiler combustion utilization module includes a gas boiler 26 , steam drum 16, first steam generator 17, second steam generator 18, superheater 19, first economizer 13, second economizer 15, first air preheater 12, second air preheater device 14, blower 24, damper 25, gas heater 23, hot air pipeline 103 and butterfly valve 20; wherein, the first steam generator 17 and the second steam generator 18 communicate with each other and lay on the top of the gas boiler 26 inside, the second A steam generator 17 and a second steam generator 18 are connected to the steam drum 16 through the rising pipe and the down pipe; the superheater 19 is located above the inside of the gas boiler 26, and the superheater 19 communicates with the steam drum 16, and the steam drum 16 passes through the main steam The pipeline communicates with the steam turbine 1 of the steam turbine power generation module; the first economizer 13, the second economizer 15, the first air preheater 12 and the second air preheater 14 are all located in the flue of the gas boiler 26 furnace combustion chamber , and arranged sequentially from top to bottom; a section of the hot air pipeline 103 communicates with the second air preheater 14, and the other end is connected with the inlet end of the gas boiler 26 through the butterfly valve 20; the air blower 24 is connected with the first air preheater 12 The flue gas outlet pipe 102 is connected to the flue gas outlet of the gas boiler 26, and is connected to the chimney 21 through the induced draft fan 22; the gas pipe 101 is connected to the intake end of the gas boiler 26, and the steam waste heat utilization module includes a gas Heater 23, one end of the gas heater 23 is installed in the gas pipeline 101, and the other end is installed in the flue gas outlet pipeline 102, to use the waste heat of the flue gas to heat the gas in the gas pipeline 101, the steam turbine power generation module includes the steam turbine 1, the generator 2 , condenser 3, cooling tower 4, circulating water pump 5, condensate pump 6, first low pressure heater 7, second low pressure heater 8, deaerator 9, feed water pump 10, high pressure heater 11; steam turbine 1 and generator 2 connection, the steam turbine 1 communicates with the air inlet of the condenser 3, the cooling tower 4 communicates with the circulating water pump 5 through a cooling pipe, and part of the cooling pipe is placed inside the condenser 3 for heat exchange and cooling, and the water outlet of the condenser 3 passes through The condensate pump 6 communicates with the first low-pressure heater 7, the second low-pressure heater 8, and the deaerator 9, the deaerator 9 communicates with the high-pressure heater 11 through the feed water pump 10, and the high-pressure heater 11 communicates with the first economizer 13 connected.
作为优选的方案，第一省煤器13为低温省煤器。As a preferred solution, the first economizer 13 is a low-temperature economizer.
作为优选的方案，第二省煤器13为高温省煤器。As a preferred solution, the second economizer 13 is a high-temperature economizer.
本实施例的煤气高温高压发电系统的工作过程，煤气通过供煤气管道101进入煤气锅炉 26燃烧前，煤气加热器23利用煤气锅炉26的废气换热间接加热煤气自身的温度，然后进入煤气锅炉26燃烧，煤气燃烧产生的烟气通过过热器19、第二蒸发器18、第一蒸发器17、第二省煤器15、第二空气预热器14、和第一省煤器13多个装置的联合进行汽水换热并产生过热蒸汽，剩余的废气就然后通过风机22和烟囱21排出大气；过热蒸汽从过热器19出来后进入汽轮机1、由汽轮机1推动发电机2进行发电，通过汽轮机1做功以后的乏汽进入冷凝器3，在冷凝器3与冷却塔4冷却水进行循环交换冷却，冷却以后再通过凝结水泵6流向第一低压加热器7和第二低压加热器8，在进入除氧器9除氧，经过在除氧器9除氧以后再通过给水泵10进入高压加热器11，除氧水通过高压加热器11进行加热至190℃后进入第一省煤器12，完成水循环系统。In the working process of the gas high-temperature and high-pressure power generation system of this embodiment, the gas passes through the gas supply pipeline 101 before entering the gas boiler 26 for combustion, and the gas heater 23 utilizes the waste gas heat exchange of the gas boiler 26 to indirectly heat the temperature of the gas itself, and then enters the gas boiler 26 Combustion, the flue gas produced by coal gas combustion passes through multiple devices such as the superheater 19, the second evaporator 18, the first evaporator 17, the second economizer 15, the second air preheater 14, and the first economizer 13 Combined steam-water heat exchange and superheated steam are produced, and the remaining exhaust gas is then discharged into the atmosphere through the fan 22 and the chimney 21; the superheated steam enters the steam turbine 1 after coming out of the superheater 19, and the steam turbine 1 drives the generator 2 to generate electricity, and the steam turbine 1 After doing work, the exhausted steam enters the condenser 3, and the condenser 3 and the cooling tower 4 are circulated and exchanged for cooling. After cooling, it flows to the first low-pressure heater 7 and the second low-pressure heater 8 through the condensate pump 6. Deoxygenation by the deaerator 9, after the deaeration by the deaerator 9, it enters the high-pressure heater 11 through the feed water pump 10, and the deoxygenated water is heated to 190°C by the high-pressure heater 11, and then enters the first economizer 12 to complete the water cycle system.
请见图2，风门25设置有气动控制模块，气动控制模块包括依次连通设置的压缩空气机 201、压缩空气罐202、C级过热器203、冷冻式干燥机204、第一T级过滤器205和第二T级过滤器206，第二T级过滤器通过管道与风门25连通。这种结构采用压缩空气作为动力，提高安全性的同时节约运行成本；具体地，压缩空气通过压缩空气机201，然后进入压缩空气罐202储存稳压，再进入依次进入C级过热器203、冷冻式干燥机204、第一T级过滤器 205、第二T级过滤器206，通过过滤后清洁空气进行阀门用气。Please see Fig. 2, the damper 25 is provided with a pneumatic control module, and the pneumatic control module includes a compressed air machine 201, a compressed air tank 202, a C-level superheater 203, a refrigerated dryer 204, and a first T-level filter 205 connected in sequence. And the second T-stage filter 206, the second T-stage filter communicates with the damper 25 through a pipeline. This structure uses compressed air as power, which improves safety and saves operating costs; specifically, the compressed air passes through the compressed air machine 201, then enters the compressed air tank 202 to store and stabilize the pressure, and then enters the C-level superheater 203, refrigeration Dryer 204, the first T-level filter 205, and the second T-level filter 206 are used for valves through filtered clean air.
最后应当说明的是，以上实施例仅用以说明本实用新型的技术方案，而非对本实用新型保护范围的限制，尽管参照较佳实施例对本实用新型作了详细地说明，本领域的普通技术人员应当理解，可以对本实用新型的技术方案进行修改或者等同替换，而不脱离本实用新型技术方案的实质和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157484A (en) * | 2019-05-29 | 2019-08-23 | 广东东实开能能源有限公司 | A kind of biomass multi-production system |
| CN110657416A (en) * | 2019-10-28 | 2020-01-07 | 中国能源建设集团陕西省电力设计院有限公司 | Power generation system utilizing blast furnace gas |
| CN113432109A (en) * | 2021-06-28 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Double reheating gas boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157484A (en) * | 2019-05-29 | 2019-08-23 | 广东东实开能能源有限公司 | A kind of biomass multi-production system |
| CN110157484B (en) * | 2019-05-29 | 2024-05-03 | 广东东实开能能源有限公司 | Biomass poly-generation system |
| CN110657416A (en) * | 2019-10-28 | 2020-01-07 | 中国能源建设集团陕西省电力设计院有限公司 | Power generation system utilizing blast furnace gas |
| CN113432109A (en) * | 2021-06-28 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Double reheating gas boiler |
| CN113432109B (en) * | 2021-06-28 | 2023-03-07 | 东方电气集团东方锅炉股份有限公司 | Double reheating gas boiler |
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