CN203717052U - 一种提高发电机组热效率的工艺系统 - Google Patents
一种提高发电机组热效率的工艺系统 Download PDFInfo
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- CN203717052U CN203717052U CN201420070671.0U CN201420070671U CN203717052U CN 203717052 U CN203717052 U CN 203717052U CN 201420070671 U CN201420070671 U CN 201420070671U CN 203717052 U CN203717052 U CN 203717052U
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- 238000000034 method Methods 0.000 title claims abstract description 20
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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- 239000003517 fume Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract 2
- 238000009833 condensation Methods 0.000 abstract 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Abstract
本实用新型涉及一种提高发电机组热效率的工艺系统，它包括：非电制冷机、凝结器、锅炉、烟气换热器、循环水冷却泵、循环水泵、烟气换热器循环水泵、凝结水泵、冷却塔。利用锅炉烟气余热或汽机低焓值的蒸汽作能源，通过非电制冷机来降低汽轮机凝结器的循环冷却水水温，从而降低凝结器内排汽压力，因此提高机组的热效率。其安全、简单、实用、可靠，回收锅炉排出的烟气废热或利用汽轮机抽出的低焓值蒸汽，能大幅降低运行成本，提高发电机组热效率，具有很高的经济价值。
Description
一种提高发电机组热效率的工艺系统
技术领域
[0001] 本实用新型属于能源领域，具体涉及一种提高发电机组热效率的工艺系统。
背景技术
[0002] 提高能源利用效率，节能减排，已受到越来越多的关注，也是国家重点的能源政策。在能源领域，传统用于汽机凝结器的循环冷却水的冷却方式采用的是靠冷却塔用空气冷却的闭式循环或用江、河、湖水循环冷却的开式循环；这两种方式都受季节的影响，在夏天环境温度高时冷却水温度也高，从而导致凝结器内排气压力提高，因此降低了机组的热效率。
发明内容
[0003] 为了克服上述现有技术存在的问题，本实用新型提供了一种利用锅炉烟气余热或汽轮机抽出的低焓值蒸汽作能源，通过非电制冷机来降低汽机凝结器的循环冷却水水温的工艺系统，从而降低凝结器内排汽压力，因此提高机组的热效率。其安全、简单、实用、可靠，回收锅炉排出的烟气废热或利用汽轮机抽出的低焓值蒸汽，能大幅降低机组运行成本，提闻发电机组热效率，具有很闻的经济价值。
[0004] 本实用新型的利用锅炉烟气余热技术方案如下:
[0005] 一种提高发电机组热效率的工艺系统，包括以下方面:
[0006] 包括:非电制冷机⑴、凝结器⑵、锅炉(3)、烟气换热器⑷、循环水冷却泵(5)、循环水泵出)、烟气换热器循环水泵(7)、凝结水泵(8)、冷却塔(9);其特征在于:烟气换热器循环水泵(7)将冷却水送入锅炉(3)尾部安装的烟气换热器(4)，加热后的水送入非电制冷机(I)作为制冷能源；循环水泵(6)将经过非电制冷机(I)冷却后的循环水送入凝结器
(2)来冷却汽轮机的排汽；循环水冷却泵(5)将冷却水送入非电制冷机(I)带走热量，然后在冷却塔(9)通过空气冷却，送入非电制冷机(I)进行循环。
附图说明
[0007] 为了使本实用新型的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型作进一步详细描述。
[0008] 图1为本实用新型的工艺系统示意图。
具体实施方式
[0009] 以下将参照附图，对本实用新型的优选实施例进行详细的描述。
[0010] 本实用新型是一种提高发电机组热效率的工艺系统，它包括:非电制冷机(I)、凝结器(2)、锅炉(3)、烟气换热器(4)、循环水冷却泵(5)、循环水泵(6)、烟气换热器循环水泵
(7)、凝结水泵(8)、冷却塔(9)。
[0011] 其工艺流程如下:[0012] 1、烟气换热器循环水泵(7)将冷却水送入锅炉(3)尾部安装的烟气换热器(4)，加热后的水送入非电制冷机(I)作为制冷能源；
[0013] 2、循环水泵(6)将经过非电制冷机⑴冷却后的循环水送入凝结器⑵来冷却汽轮机的排汽；
[0014] 3、循环水冷却泵(5)将冷却水送入非电制冷机⑴带走热量，然后在冷却塔(9)通过空气冷却，送入非电制冷机(I)进行循环；
[0015] 综上所述:该实用新型安全、简单、实用、可靠，回收锅炉排出的烟气废热或利用汽轮机抽出的低焓值蒸汽，能大幅降低运行成本，提高发电机组热效率，具有很高的经济价值，是一个很有推广价值的实用新型。
[0016] 最后说明的是，以上实施例仅用以说明本实用新型的技术方案而非限制，尽管通过参照本实用新型的优选实施例已对本发明进行了描述，但本领域的技术人员应当理解，可以在形式上和细节上对其做出各种各样的改变，而不偏离权利要求书所限定的本实用新型的精神和范围。
Claims (4)
1.一种提高发电机组热效率的工艺系统，它包括:非电制冷机(I)、凝结器(2)、锅炉(3)、烟气换热器(4)、循环水冷却泵(5)、循环水泵(6)、烟气换热器循环水泵(7)、凝结水泵(8)、冷却塔(9);其特征在于:烟气换热器循环水泵(7)将冷却水送入锅炉(3)尾部安装的烟气换热器(4)，加热后的水送入非电制冷机(I)作为制冷能源；循环水泵(6)将经过非电制冷机(I)冷却后的循环水送入凝结器(2)来冷却汽轮机的排汽；循环水冷却泵(5)将冷却水送入非电制冷机(I)带走热量，然后在冷却塔(9)通过空气冷却，送入非电制冷机(I)进行循环。
2.根据权利要求1所述的一种提高发电机组热效率的工艺系统，其特征在于该工艺系统中采用了非电制冷机(I)。
3.根据权利要求2所述的一种提高发电机组热效率的工艺系统，其特征在于该工艺系统中非电制冷机(I)的能源来自于锅炉烟气余热或汽轮机抽出的低焓值蒸汽。
4.根据权利要求2所述的一种提高发电机组热效率的工艺系统，其特征在于该工艺系统中的所述非电制冷机(I)产生的冷却水用来冷却汽轮机的排汽。
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