JPH03213673A - Water soluble hydrogen sulfide gas removing device - Google Patents
Water soluble hydrogen sulfide gas removing deviceInfo
- Publication number
- JPH03213673A JPH03213673A JP886890A JP886890A JPH03213673A JP H03213673 A JPH03213673 A JP H03213673A JP 886890 A JP886890 A JP 886890A JP 886890 A JP886890 A JP 886890A JP H03213673 A JPH03213673 A JP H03213673A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen sulfide
- gas
- sulfide gas
- condenser
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 88
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000010248 power generation Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 241001417501 Lobotidae Species 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- -1 steam Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
この発明は、地熱発電設備の蒸気中に含まれる硫化水素
ガスを除去する硫化水素ガス除去装置に関する。The present invention relates to a hydrogen sulfide gas removal device that removes hydrogen sulfide gas contained in steam of geothermal power generation equipment.
地熱発電設備は地中の生産井から噴出する地熱資源（熱
水または蒸気またはそれらの混合物）を気水分離器に導
いて蒸気を分離させ、この蒸気を蒸気タービンに導いて
駆動して発電している。−般に、熱水または蒸気または
それらの混合物は、炭酸ガス、硫化水素ガス及び微量の
不活性ガス等を伴う。これらガスは、復水器においてガ
ス抽出器によって抽出され大気へ放散されている。しか
し、硫化水素ガスは有毒なので硫化水素ガスの大気放散
に対し規制する地域もある。従来の設備は、タービン上
流蒸気９復水、または抽出ガスに対し化学反応により硫
化水素ガスを硫黄または硫化物として生成させることに
より除去している。
また、硫化水素ガスを含む抽出ガスをフラッシャから還
元井への還元配管へ直接押し込み、還元水とともに地中
へ戻す方法もある。Geothermal power generation equipment uses geothermal resources (hot water, steam, or a mixture thereof) that erupts from underground production wells to be guided to a steam separator to separate steam, and this steam is guided to a steam turbine to drive and generate electricity. ing. - Generally, hot water or steam or a mixture thereof is accompanied by carbon dioxide gas, hydrogen sulfide gas, trace amounts of inert gas, etc. These gases are extracted by a gas extractor in the condenser and released to the atmosphere. However, since hydrogen sulfide gas is toxic, some regions impose restrictions on the release of hydrogen sulfide gas into the atmosphere. Conventional equipment removes hydrogen sulfide gas by generating sulfur or sulfide gas through a chemical reaction on turbine upstream steam 9 condensate or extracted gas. Another method is to push the extracted gas containing hydrogen sulfide gas directly from the flasher into the reinjection pipe leading to the reinjection well, and return it to the ground together with the reduced water.
化学反応により硫化水素ガスを硫黄または硫化物として
除去する設備では、建設コスト、運転コストの両方共高
いという問題、また生産される地価資源に含まれる硫化
水素ガスの濃度変化に対して柔軟に対応しがたいという
問題がある。
また、硫化水素ガスを含む抽出ガスを還元水とともに地
中へ戻す設備では、抽出ガスに含まれる空気、炭酸ガス
等水に溶は切れないガスが配管中にガス（空気）溜まり
を作り、配管中の流れを妨げてしまう恐れがある。
この発明は、化学反応を利用せず、硫化水素ガスを水に
溶解させて地中へ還元する水溶式硫化水素ガス除去装置
を提供することを目的とする。Equipment that removes hydrogen sulfide gas as sulfur or sulfide through a chemical reaction has the problem of high construction and operating costs, and can flexibly respond to changes in the concentration of hydrogen sulfide gas contained in the produced land resources. The problem is that it is difficult. In addition, in equipment that returns extracted gas containing hydrogen sulfide gas to the ground together with reduced water, gases that cannot be dissolved in water, such as air and carbon dioxide contained in the extracted gas, create gas (air) pockets in the piping. This may obstruct the flow inside. An object of the present invention is to provide a water-soluble hydrogen sulfide gas removal device that dissolves hydrogen sulfide gas in water and returns it to the ground without using chemical reactions.
上記目的は、フラッシャ、復水器、ガス抽出器。
冷却塔、蒸気タービンを有する地熱発電設備において、
硫化水素ガス溶解槽とエゼクタとを備え、前記冷却塔の
余剰水及び前記フラッシャのドレンの両方または何れか
一方を前記硫化水素ガス溶解槽へ導くとともに、前記ガ
ス抽出器により前記復水器から抽出されたガスを前記エ
ゼクタを介して前記硫化水素ガス溶解槽へ吹き込んで、
前記ガスに含まれる硫化水素ガスを前記余剰水及びドレ
ンの両方または何れか一方へ溶解させ、この溶解液を還
元井へ戻すことによって達成される。The above purposes are flashers, condensers, and gas extractors. In geothermal power generation facilities with cooling towers and steam turbines,
A hydrogen sulfide gas dissolving tank and an ejector are provided, and surplus water from the cooling tower and/or drain from the flasher are guided to the hydrogen sulfide gas dissolving tank and extracted from the condenser by the gas extractor. blowing the gas into the hydrogen sulfide gas dissolving tank through the ejector,
This is achieved by dissolving the hydrogen sulfide gas contained in the gas into the surplus water and/or drain, and returning this dissolved solution to the reinjection well.
エゼクタと硫化水素ガス溶解槽を備え、冷却塔の余剰水
及びフラッシャのドレンの両方または何れか一方を硫化
水素ガス溶解槽へ導くとともに、復水器から抽出された
ガスをエゼクタを介して硫化水素ガス溶解槽へ吹き込ん
で、前記ガスに含まれる硫化水素ガスを前記硫化水素ガ
ス溶解槽内の前記余剰水またはドレンに溶解させて還元
井へ戻すので、特別な化学反応を用いないで硫化水素ガ
スを除去できる。Equipped with an ejector and a hydrogen sulfide gas dissolving tank, it guides excess water from the cooling tower and/or drain from the flasher to the hydrogen sulfide gas dissolving tank, and also directs the gas extracted from the condenser to the hydrogen sulfide gas dissolving tank via the ejector. The hydrogen sulfide gas contained in the gas is blown into the gas dissolution tank and dissolved in the excess water or drain in the hydrogen sulfide gas dissolution tank and returned to the reinjection well, so hydrogen sulfide gas is dissolved without using a special chemical reaction. can be removed.
以下図面に基づいてこの発明の詳細な説明する。第１図
はこの発明の実施例による水溶式硫化水素ガス除去装置
の系統図である。生産井１から噴出する地熱資源を気水
分離器２で水分と蒸気とを分離し、分離された蒸気と、
水分をフラッシャ３により蒸発さた蒸気とを蒸気タービ
ン４へ導いて蒸気タービンを駆動する。さらに蒸気ター
ビン４に結合されている発電機５を駆動して発電する。
蒸気タービン４を出た蒸気は復水器６で復水され、さら
にホットウェルポンプ９を介して冷却塔１０へ導かれ、
冷却水で冷却されて大部分は復水器６の冷却に使用され
、一部は硫化水素ガス溶解槽１１へ導かれる。地熱発電
ではフラッシャのドレン及び冷却塔１０の余剰水が系外
へ排出される余剰水として存在する。この水は通常、還
元井より地中へ戻される。
この発明の実施例による水溶式硫化水素ガス除去装置は
エゼクタ８及び硫化水素ガス溶解槽１１を設け、フラッ
シャ３のドレン及び冷却塔１０の余剰水の両方または何
れか一方を硫化水素ガス溶解槽１１へ導くとともに、ガ
ス抽出器７により復水器６から抽出されたガスをエゼク
タ８を介して硫化水素ガス溶解槽１１へ導く。
硫化水素ガスは抽出ガス中の他のガス（空気・炭酸ガス
等）に比べ非常に溶解度が高く、硫化水素ガス溶解槽１
１にて全て溶解する。なお、一般に地熱蒸気中のガス量
は１〜５％、その内硫化水素ガスは１〜５％であり、余
剰水に全て溶解した場合の飽和度は４０％前後となるた
め硫化水素ガスの濃度変化に対して充分対応できる。
一方、硫化水素ガス溶解槽１１は完全大気開放構造また
は自圧式逃がし弁による大気開放構造とし、余剰水に溶
解しきれない空気や炭酸ガスなどを大気に放出する。硫
化水素ガス溶解槽１１からは還元ポンプ１２により溶解
水を還元井１３に輸送し地中へ戻す。また、抽出ガスを
硫化水素ガス溶解槽１１にエゼクタ８により吹き込むこ
とにより溶解槽１１の水温が若干高まり、フラッシュ圧
力が低くドレン温度が低い場合、冷却塔１０の余剰水を
使用する場合またはそれらの混合水を使用する場合には
、還元井１３でのシリカ析出を防止することもできる。The present invention will be described in detail below based on the drawings. FIG. 1 is a system diagram of a water-soluble hydrogen sulfide gas removal apparatus according to an embodiment of the present invention. The geothermal resources gushing out from the production well 1 are separated into moisture and steam by a steam separator 2, and the separated steam is
The moisture is evaporated by the flasher 3 and the steam is guided to the steam turbine 4 to drive the steam turbine. Furthermore, a generator 5 coupled to the steam turbine 4 is driven to generate electricity. Steam exiting the steam turbine 4 is condensed in a condenser 6, and further guided to a cooling tower 10 via a hot well pump 9.
Most of the water is cooled by cooling water and used for cooling the condenser 6, and a portion is led to the hydrogen sulfide gas dissolving tank 11. In geothermal power generation, drain from the flasher and surplus water from the cooling tower 10 exist as surplus water to be discharged outside the system. This water is typically returned underground through reinjection wells. The water-soluble hydrogen sulfide gas removal apparatus according to the embodiment of the present invention is provided with an ejector 8 and a hydrogen sulfide gas dissolving tank 11, and drains the drain of the flasher 3 and/or excess water from the cooling tower 10 into the hydrogen sulfide gas dissolving tank 11. At the same time, the gas extracted from the condenser 6 by the gas extractor 7 is guided to the hydrogen sulfide gas dissolving tank 11 via the ejector 8. Hydrogen sulfide gas has a very high solubility compared to other gases (air, carbon dioxide, etc.) in the extracted gas, and hydrogen sulfide gas dissolution tank 1
Dissolve everything in step 1. Generally, the amount of gas in geothermal steam is 1 to 5%, of which hydrogen sulfide gas is 1 to 5%, and the degree of saturation when all dissolved in surplus water is around 40%, so the concentration of hydrogen sulfide gas is Able to respond adequately to changes. On the other hand, the hydrogen sulfide gas dissolving tank 11 has a structure completely open to the atmosphere or a structure that is open to the atmosphere using a self-pressure relief valve, and releases air, carbon dioxide, etc. that cannot be dissolved in the excess water to the atmosphere. Dissolved water is transported from the hydrogen sulfide gas dissolving tank 11 to a reduction well 13 by a reduction pump 12 and returned underground. In addition, when the water temperature in the dissolution tank 11 increases slightly by blowing the extracted gas into the hydrogen sulfide gas dissolution tank 11 by the ejector 8, when the flash pressure is low and the drain temperature is low, when surplus water from the cooling tower 10 is used, or when When mixed water is used, silica precipitation in the reinjection well 13 can also be prevented.
この発明は、冷却塔の余剰水及びフラッシャのドレンの
両方または何れか一方を硫化水素ガス溶解槽へ導くとと
もに、復水器から抽出されたガスをエゼクタを介して硫
化水素ガス溶解槽へ吹き込んで、前記ガスに含まれる硫
化水素ガスを前記硫化水素ガス溶解槽内の前記余剰水ま
たはドレンに溶解させて還元井へ戻すので、有毒である
硫化水素ガスを大気に放散せず、還元水配管内でのガス
溜まりの問題をおこさない。さらに、特別な装置による
化学反応を用いず、吹き込み用エゼクタ及び硫化水素ガ
ス溶解槽を用いるだけで、信顛性が高く環境を汚染しな
い硫化水素ガス除去装置を提供できる。This invention leads excess water from the cooling tower and/or drain from the flasher to a hydrogen sulfide gas dissolving tank, and also blows gas extracted from the condenser into the hydrogen sulfide gas dissolving tank via an ejector. , the hydrogen sulfide gas contained in the gas is dissolved in the excess water or drain in the hydrogen sulfide gas dissolving tank and returned to the reinjection well, so that toxic hydrogen sulfide gas is not released into the atmosphere and is removed from the reduction water piping. This will prevent gas build-up problems. Further, by simply using a blowing ejector and a hydrogen sulfide gas dissolving tank without using a chemical reaction using a special device, it is possible to provide a highly reliable hydrogen sulfide gas removal device that does not pollute the environment.
第１図はこの発明の実施例による水溶式硫化水素ガス除
去装置の系統図である。
ｌ：生産井、２：気水分離器、３：フラッシャ、４：蒸
気タービン、５：発電機、６：復水器、７：ガス抽出器
、８：エゼクタ、１０：冷却塔、１１：硫化水素ガス溶
解槽、１３：還元井。FIG. 1 is a system diagram of a water-soluble hydrogen sulfide gas removal apparatus according to an embodiment of the present invention. 1: Production well, 2: Steam separator, 3: Flasher, 4: Steam turbine, 5: Generator, 6: Condenser, 7: Gas extractor, 8: Ejector, 10: Cooling tower, 11: Sulfide Hydrogen gas dissolution tank, 13: Reduction well.
Claims (1)
ービンを有する地熱発電設備において、硫化水素ガス溶
解槽とエゼクタとを備え、前記冷却塔の余剰水及び前記
フラッシャのドレンの両方または何れか一方を前記硫化
水素ガス溶解槽へ導くとともに、前記ガス抽出器により
前記復水器から抽出されたガスを前記エゼクタを介して
前記硫化水素ガス溶解槽へ吹き込んで、前記ガスに含ま
れる硫化水素ガスを前記余剰水及びドレンの両方または
何れか一方へ溶解させ、この溶解液を還元井へ戻すこと
を特徴とする水溶式硫化水素ガス除去装置。1) A geothermal power generation facility having a flasher, a condenser, a gas extractor, a cooling tower, and a steam turbine, which is equipped with a hydrogen sulfide gas dissolving tank and an ejector, and the surplus water of the cooling tower and/or the drain of the flasher is One of the gases is introduced into the hydrogen sulfide gas dissolving tank, and the gas extracted from the condenser by the gas extractor is blown into the hydrogen sulfide gas dissolving tank via the ejector to remove hydrogen sulfide contained in the gas. A water-soluble hydrogen sulfide gas removal device characterized in that the gas is dissolved in the excess water and/or the drain, and the dissolved solution is returned to the reduction well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP886890A JPH03213673A (en) | 1990-01-18 | 1990-01-18 | Water soluble hydrogen sulfide gas removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP886890A JPH03213673A (en) | 1990-01-18 | 1990-01-18 | Water soluble hydrogen sulfide gas removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03213673A true JPH03213673A (en) | 1991-09-19 |
Family
ID=11704669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP886890A Pending JPH03213673A (en) | 1990-01-18 | 1990-01-18 | Water soluble hydrogen sulfide gas removing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03213673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177507A (en) * | 1995-12-26 | 1997-07-08 | Yoshitaro Mori | Method for disposing non-condensable gas in geothermal power plant |
| JP2022037982A (en) * | 2020-08-26 | 2022-03-10 | Ｊｆｅエンジニアリング株式会社 | Geothermal power generation system |
-
1990
- 1990-01-18 JP JP886890A patent/JPH03213673A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177507A (en) * | 1995-12-26 | 1997-07-08 | Yoshitaro Mori | Method for disposing non-condensable gas in geothermal power plant |
| JP2022037982A (en) * | 2020-08-26 | 2022-03-10 | Ｊｆｅエンジニアリング株式会社 | Geothermal power generation system |
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