JP3230517U - Combined deoxidation system for supercritical carbon dioxide power generation system - Google Patents
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 36
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 36
- 238000010248 power generation Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 abstract description 20
- 239000001301 oxygen Substances 0.000 abstract description 20
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 239000002253 acid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 208000025865 Ulcer Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
【課題】二酸化炭素作動流体中の酸素の除去を実現することができる超臨界二酸化炭素発電システム用複合脱酸システムを提供する。【解決手段】超臨界二酸化炭素発電システム用複合脱酸システムは、発電機８、ボイラー１、タービン２、プレクーラー４、低温脱酸システム５、コンプレッサー６及び高温脱酸システム７を備え、ボイラー１の出口はタービン２の入口に連通され、タービン２の出口はプレクーラー４の入口に連通され、プレクーラー４の出口は低温脱酸システム５を介してコンプレッサー６の入口に連通され、コンプレッサー６の出口は高温脱酸システム７を介してボイラー１の入口に連通され、コンプレッサー６は発電機８に接続され、該システムは、二酸化炭素作動流体中の酸素の除去を実現することができる。【選択図】図１PROBLEM TO BE SOLVED: To provide a composite deoxidizing system for a supercritical carbon dioxide power generation system capable of realizing removal of oxygen in a carbon dioxide working fluid. A composite deoxidizing system for a supercritical carbon dioxide power generation system includes a generator 8, a boiler 1, a turbine 2, a precooler 4, a low temperature deoxidizing system 5, a compressor 6, and a high temperature deoxidizing system 7. The outlet of the turbine 2 is communicated with the inlet of the turbine 2, the outlet of the turbine 2 is communicated with the inlet of the precooler 4, the outlet of the precooler 4 is communicated with the inlet of the compressor 6 via the low temperature deoxidizing system 5, and the outlet of the compressor 6 is communicated. The outlet is communicated to the inlet of the boiler 1 via a high temperature deoxidizing system 7, the compressor 6 is connected to the generator 8, which system can achieve the removal of oxygen in the carbon dioxide working fluid. [Selection diagram] Fig. 1
Description
本考案は超臨界二酸化炭素ブレイトンサイクル発電の技術分野に属し、超臨界二酸化炭素発電システム用複合脱酸システムに関する。 The present invention belongs to the technical field of supercritical carbon dioxide Brayton cycle power generation, and relates to a composite deoxidizing system for a supercritical carbon dioxide power generation system.
蒸気ランキンサイクル発電システムでは、給水中の溶存酸素が給水システムと熱システム全体の安全な動作に影響を及ぼす。給水中の溶存酸素は、給水パイプラインとエコノマイザーの孔食腐食を引き起こし、パイプラインの内壁の粗さが増加し、流動抵抗が大きくなる一方で、給水に沈殿物が溜まりやすく、堆積物下の腐食を加速してしまう。給水溶存酸素による腐食生成物がボイラー給水とともにボイラーに入ると、これらの腐食生成物が熱負荷の高いボイラーの領域に堆積し、チューブパネルの熱伝達が悪くなり、ボイラー効率を低下させ、スケール生成率を加速し、ひいては潰瘍性堆積物下の腐食を引き起こして、ひどい場合には、チューブの破裂を引き起こし、ボイラーの安全運転に影響を与える。それと同時に、給水中の溶存酸素によるパイプラインの腐食は、蒸気中の鉄含有量を増加させ、蒸気タービンブレードのスケール生成率を加速し、蒸気タービンの動作効率を低下させ、ひどい場合には蒸気タービンの安全な動作に影響を与える。 In steam Rankine cycle power generation systems, dissolved oxygen in the feed water affects the safe operation of the water supply system and the entire thermal system. Dissolved oxygen in the water supply causes pitting corrosion of the water supply pipeline and economizer, increasing the roughness of the inner wall of the pipeline and increasing the flow resistance, while sediment tends to accumulate in the water supply and under the sediment. Accelerates corrosion. When water-supplied oxygen corrosion products enter the boiler along with the boiler water supply, these corrosion products accumulate in the areas of the boiler with high heat load, resulting in poor heat transfer in the tube panel, reducing boiler efficiency and scale generation. It accelerates the rate and thus causes corrosion under ulcerative deposits, and in severe cases causes tube rupture, affecting the safe operation of the boiler. At the same time, the corrosion of the pipeline by dissolved oxygen in the feed water increases the iron content in the steam, accelerates the scale generation rate of the steam turbine blades, reduces the operating efficiency of the steam turbine, and in severe cases steam. Affects the safe operation of the turbine.
超臨界二酸化炭素発電システムにおいても同じ問題に直面し、システムは起動前に何度も二酸化炭素ガスに置き換えられるが、システム内に一部のデッドゾーンが残って酸素が残留され、二酸化炭素作動流体にも一定量の酸素が存在するため、超臨界二酸化炭素発電システムも酸素腐食の問題に直面する。しかし、従来の公的に報告されている脱酸装置のほとんどは、水中の溶存酸素を除去するために使用され、超臨界二酸化炭素発電システムに使用される脱酸システムはほとんどない。 Faced with the same problem in supercritical carbon dioxide power generation systems, the system is replaced with carbon dioxide gas many times before booting, but some dead zones remain in the system and oxygen remains, carbon dioxide working fluid. Since there is a certain amount of oxygen in the system, supercritical carbon dioxide power generation systems also face the problem of oxygen corrosion. However, most of the conventional publicly reported deoxidizers are used to remove dissolved oxygen in water, and few deoxidizers are used in supercritical carbon dioxide power generation systems.
本考案は、上記の従来の技術の欠点を克服するために、二酸化炭素作動流体中の酸素の除去を実現することができる超臨界二酸化炭素発電システム用複合脱酸システムを提供することを目的とする。 An object of the present invention is to provide a composite deoxidizing system for a supercritical carbon dioxide power generation system capable of realizing removal of oxygen in a carbon dioxide working fluid in order to overcome the above-mentioned drawbacks of the prior art. To do.
上記の目的を達成するために、本考案による超臨界二酸化炭素発電システム用複合脱酸システムは、発電機、ボイラー、タービン、プレクーラー、低温脱酸システム、コンプレッサー及び高温脱酸システムを備え、ボイラーの出口はタービンの入口に連通され、タービンの出口はプレクーラーの入口に連通され、プレクーラーの出口は低温脱酸システムを介してコンプレッサーの入口に連通され、コンプレッサーの出口は高温脱酸システムを介してボイラーの入口に連通され、コンプレッサーは発電機に接続される。 In order to achieve the above object, the combined deoxidizing system for supercritical carbon dioxide power generation system according to the present invention includes a generator, a boiler, a turbine, a precooler, a low temperature deoxidizing system, a compressor and a high temperature deoxidizing system. The outlet of the compressor communicates with the inlet of the turbine, the outlet of the turbine communicates with the inlet of the precooler, the outlet of the precooler communicates with the inlet of the compressor via the low temperature deoxidizing system, and the outlet of the compressor communicates with the high temperature deoxidizing system. It is communicated to the inlet of the boiler through and the compressor is connected to the generator.
再生器をさらに備え、タービンの出口は再生器の熱側を介してプレクーラーの入口に連通され、高温脱酸システムの出口は再生器の冷側を介してボイラーの入口に連通される。 Further equipped with a regenerator, the outlet of the turbine communicates with the inlet of the precooler via the hot side of the regenerator and the outlet of the hot deoxidizing system communicates with the inlet of the boiler via the cold side of the regenerator.
コンプレッサー、タービン及び発電機は同軸配置される。 The compressor, turbine and generator are coaxially arranged.
低温脱酸システムは、複数の低温脱酸装置を並列接続したものである。 The low temperature deoxidizing system is a parallel connection of a plurality of low temperature deoxidizing devices.
高温脱酸システムは、複数の高温脱酸装置を並列接続したものである。 The high temperature deoxidizing system is a system in which a plurality of high temperature deoxidizing devices are connected in parallel.
低温脱酸装置内の脱酸剤はスポンジ鉄であり、高温脱酸装置内の脱酸剤はニッケル系化学吸収脱酸剤、マンガン系化学吸収脱酸剤または鉄系化学吸収脱酸剤である。 The deoxidizer in the low temperature deoxidizer is sponge iron, and the deoxidizer in the high temperature deoxidizer is nickel-based chemical absorption deoxidizer, manganese-based chemical absorption deoxidizer or iron-based chemical absorption deoxidizer. ..
本考案は、以下の有益な効果を有し、
本考案による超臨界二酸化炭素発電システム用複合脱酸システムは、具体的に操作する時に、プレクーラーによって冷却された後二酸化炭素が低温脱酸システムに入り、低温脱酸システム中の脱酸剤に接触し、二酸化炭素中の酸素が脱酸剤と反応し、酸素の含有量を減少させ、圧縮後の二酸化炭素は高温脱酸システム中の脱酸剤に接触し、二酸化炭素中の酸素が脱酸剤と反応し、酸素の含有量をより減少させ、説明する必要があるのは、二酸化炭素作動流体が低温脱酸システムと高温脱酸システムによって複合脱酸された後、酸素含有量は基準を満たすまで減少される。
The present invention has the following beneficial effects,
The combined deoxidizing system for a supercritical carbon dioxide power generation system according to the present invention, when specifically operated, carbon dioxide enters the low temperature deoxidizing system after being cooled by the precooler and becomes a deoxidizing agent in the low temperature deoxidizing system. Upon contact, oxygen in carbon dioxide reacts with the deoxidizer, reducing the oxygen content, compressed carbon dioxide contacts the deoxidizer in the high temperature deoxidizing system, and oxygen in carbon dioxide is desorbed. It is necessary to explain that it reacts with the acid agent to further reduce the oxygen content, and the oxygen content is the standard after the carbon dioxide working fluid is combined deoxidized by the low temperature deoxidization system and the high temperature deoxidization system. It is reduced until it meets.
以下、図面を参照して、本考案をより詳細に説明する。
図１を参照し、本考案による超臨界二酸化炭素発電システム用複合脱酸システムは、発電機８、ボイラー１、タービン２、プレクーラー４、低温脱酸システム５、コンプレッサー６及び高温脱酸システム７を備え、ボイラー１の出口はタービン２の入口に連通され、タービン２の出口はプレクーラー４の入口に連通され、プレクーラー４の出口は低温脱酸システム５を介してコンプレッサー６の入口に連通され、コンプレッサー６の出口は高温脱酸システム７を介してボイラー１の入口に連通され、コンプレッサー６は発電機８に接続され、コンプレッサー６、タービン２及び発電機８は同軸配置される。
Hereinafter, the present invention will be described in more detail with reference to the drawings.
With reference to FIG. 1, the composite deoxidizing system for a supercritical carbon dioxide power generation system according to the present invention includes a generator 8, a boiler 1, a turbine 2, a precooler 4, a low temperature deoxidizing system 5, a compressor 6, and a high temperature deoxidizing system 7. The outlet of the boiler 1 is communicated with the inlet of the turbine 2, the outlet of the turbine 2 is communicated with the inlet of the precooler 4, and the outlet of the precooler 4 is communicated with the inlet of the compressor 6 via the low temperature deoxidizing system 5. The outlet of the compressor 6 is communicated with the inlet of the boiler 1 via the high temperature deoxidizing system 7, the compressor 6 is connected to the generator 8, and the compressor 6, the turbine 2 and the generator 8 are coaxially arranged.
本考案は再生器３をさらに備え、タービン２の出口は再生器３の熱側を介してプレクーラー４の入口に連通され、高温脱酸システム７の出口は再生器３の冷側を介してボイラー１の入口に連通される。 The present invention further includes a regenerator 3, the outlet of the turbine 2 communicating with the inlet of the precooler 4 via the hot side of the regenerator 3, and the outlet of the high temperature deoxidizing system 7 via the cold side of the regenerator 3. It communicates with the entrance of boiler 1.
図２と図３を参照し、低温脱酸システム５は、複数の低温脱酸装置５１を並列接続したものであり、高温脱酸システム７は、複数の高温脱酸装置７１を並列接続したものであり、低温脱酸装置５１内の脱酸剤はスポンジ鉄であり、高温脱酸装置７１内の脱酸剤はニッケル系化学吸収脱酸剤、マンガン系化学吸収脱酸剤または鉄系化学吸収脱酸剤である。 With reference to FIGS. 2 and 3, the low temperature deoxidizing system 5 has a plurality of low temperature deoxidizing devices 51 connected in parallel, and the high temperature deoxidizing system 7 has a plurality of high temperature deoxidizing devices 71 connected in parallel. The deoxidizer in the low temperature deoxidizer 51 is sponge iron, and the deoxidizer in the high temperature deoxidizer 71 is a nickel-based chemical absorption deoxidizer, a manganese-based chemical absorption deoxidizer, or an iron-based chemical absorption. It is a deoxidizer.
本考案の具体的な動作プロセスは、以下の通りである。
ボイラー１から出力された高温高圧の二酸化炭素はタービン２に入り、作業を行い、タービン２は、コンプレッサー６と発電機８の作動を駆動し、タービン２から排出された排気ガスは、プレクーラー４により３２〜４０℃に冷却され、低温脱酸システム５に入って脱酸され、次にコンプレッサー６に入って圧縮され、コンプレッサー６から出力された８０〜１００℃の二酸化炭素作動流体は、高温脱酸システム７により脱酸された後ボイラー１に入って加熱され、高温高圧の二酸化炭素を形成する。
The specific operation process of the present invention is as follows.
The high-temperature and high-pressure carbon dioxide output from the boiler 1 enters the turbine 2 to perform work, the turbine 2 drives the operation of the compressor 6 and the generator 8, and the exhaust gas discharged from the turbine 2 is the precooler 4. The 80-100 ° C carbon dioxide working fluid output from the compressor 6 is deoxidized at a high temperature after being cooled to 32 to 40 ° C., entering the low temperature deoxidizing system 5 and deoxidizing, and then entering the compressor 6 and being compressed. After being deoxidized by the acid system 7, it enters the boiler 1 and is heated to form high-temperature and high-pressure carbon dioxide.
プレクーラー４で冷却された後、二酸化炭素は低温脱酸システム５に入り、低温脱酸システム５中の脱酸剤に接触し、二酸化炭素中の酸素が脱酸剤と反応し、酸素の含有量を減少させ、圧縮後の二酸化炭素は高温脱酸システム７中の脱酸剤に接触し、二酸化炭素中の酸素が脱酸剤と反応し、酸素の含有量をさらに減少させる。 After being cooled by the precooler 4, carbon dioxide enters the low temperature deoxidizing system 5, comes into contact with the deoxidizing agent in the low temperature deoxidizing system 5, oxygen in the carbon dioxide reacts with the deoxidizing agent, and contains oxygen. The amount is reduced, the compressed carbon dioxide comes into contact with the deoxidizer in the high temperature deoxidizing system 7, and the oxygen in the carbon dioxide reacts with the deoxidizer, further reducing the oxygen content.
低温脱酸装置５１の数は２つであり、１つの低温脱酸装置５１の脱酸効果が低い場合、該低温脱酸装置５１を停止し、且つ該低温脱酸装置５１内の脱酸剤を交換し、それと同時に、もう１つの低温脱酸装置５１を開始し、同様に、高温脱酸装置７１の数は２つであり、１つの高温脱酸装置７１の脱酸効果が低い場合、該高温脱酸装置７１を停止し、且つ該高温脱酸装置７１内の脱酸剤を交換し、それと同時に、もう１つの高温脱酸装置７１を開始する。 The number of the low-temperature deoxidizer 51 is two, and when the deoxidizing effect of one low-temperature deoxidizer 51 is low, the low-temperature deoxidizer 51 is stopped and the deoxidizer in the low-temperature deoxidizer 51 is stopped. At the same time, another low-temperature deoxidizing device 51 is started. Similarly, when the number of high-temperature deoxidizing devices 71 is two and the deoxidizing effect of one high-temperature deoxidizing device 71 is low, The high temperature deoxidizing device 71 is stopped, the deoxidizing agent in the high temperature deoxidizing device 71 is replaced, and at the same time, another high temperature deoxidizing device 71 is started.
なお、上記の実施例は、本考案の技術的構想と特点を説明するためのものに過ぎず、具体的な実施方法、例えば低温脱酸装置５１と高温脱酸装置７１中の脱酸剤などを依然として修正及び改善することができるが、これによって請求項の範囲に規定されている本考案の範囲と基本的な精神から逸脱することがない。 It should be noted that the above embodiment is merely for explaining the technical concept and special features of the present invention, and specific implementation methods such as a deoxidizer in the low temperature deoxidizer 51 and the high temperature deoxidizer 71 are used. Can still be modified and improved, but this does not deviate from the scope and basic spirit of the invention as set forth in the claims.
１ ボイラー
２ タービン
３ 再生器
４ プレクーラー
５ 低温脱酸システム
５１ 低温脱酸装置
６ コンプレッサー
７ 高温脱酸システム
７１ 高温脱酸装置
８ 発電機
1 Boiler 2 Turbine 3 Regenerator 4 Precooler 5 Low temperature deoxidizer 51 Low temperature deoxidizer 6 Compressor 7 High temperature deoxidizer 71 High temperature deoxidizer 8 Generator
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| CN202020988236.1U CN212406841U (en) | 2020-06-02 | 2020-06-02 | Combined deoxidization system for supercritical carbon dioxide power generation system |
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