JPS62279825A - Method of recovering hydrocarbon vapor from mixed gas - Google Patents
Method of recovering hydrocarbon vapor from mixed gasInfo
- Publication number
- JPS62279825A JPS62279825A JP61120311A JP12031186A JPS62279825A JP S62279825 A JPS62279825 A JP S62279825A JP 61120311 A JP61120311 A JP 61120311A JP 12031186 A JP12031186 A JP 12031186A JP S62279825 A JPS62279825 A JP S62279825A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- mixed gas
- hydrocarbon vapor
- gasoline
- vapor
- 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
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 42
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 42
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 16
- 239000012528 membrane Substances 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims description 22
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000003502 gasoline Substances 0.000 abstract description 26
- 239000000428 dust Substances 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 59
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
「発明の目的」
本発明は混合ガスから炭化水素蒸気回収方法に係り、空
気と炭化水素蒸気との混合ガスから炭化水素蒸気を経済
的に回収する方法を提供しようとするものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention "Object of the Invention" The present invention relates to a method for recovering hydrocarbon vapor from a mixed gas, which economically recovers hydrocarbon vapor from a mixed gas of air and hydrocarbon vapor. The aim is to provide a method for recovering the waste.
産業上の利用分野
炭化水素蒸気と空気との混合ガスから炭化水素を分離回
収するだめの技術。Industrial Applications A technology for separating and recovering hydrocarbons from a mixed gas of hydrocarbon vapor and air.
従来の技術
ガソリン、灯油、ベンゼン、アルコール類等の揮発性炭
化水素を貯蔵タンク、タンクローリ、タンク車等に充填
し、或いは気温上昇時などに発生する炭化水素ガスを含
む混合ガスは従来大気中にそのまま放散されていた。Conventional technology Volatile hydrocarbons such as gasoline, kerosene, benzene, alcohols, etc. are filled into storage tanks, tank trucks, tank cars, etc., or when the temperature rises, mixed gases containing hydrocarbon gases are released into the atmosphere. It was just being dissipated.
しかし、このように大気中に放散されたガスは、光化学
スモッグの生成物質として大気汚染の重要原因の１つに
挙げられており、各地方自治体などで前記ガスの排出濃
度が規制されつつある。However, the gases released into the atmosphere in this way are considered to be one of the important causes of air pollution as photochemical smog generating substances, and the emission concentration of the gases is being regulated by each local government.
然して上記のような揮発性炭化水素蒸気を回収する方法
については吸収法、吸着法、深冷凝縮法などがあるが、
一般的には常温常圧下での吸収法が、安全かつ効率よ（
除去回収し得る方法として数多く使用されている。又近
年ガス分離膜の発展に伴い、前記炭化水素蒸気の回収に
ついてもこのガス分離膜の利用が検討されるようになり
、これはガス分離膜を中間に入れた混合ガスに圧力差を
つけると、圧力の高い側から低い側にガスが透過して行
き、このときのガス透過速度は同一の膜に対してもガス
成分ごとに異ることを利用したものである。特にシリコ
ンやブタジェン−アクリロニトリル系の膜は炭化水素蒸
気の透過速度が空気に比較して大きいことから空気に混
入した炭化水素蒸気の回収に利用するに好ましいものと
されている。However, there are absorption methods, adsorption methods, cryogenic condensation methods, etc. for recovering volatile hydrocarbon vapors as mentioned above.
In general, absorption methods at room temperature and pressure are safe and efficient (
Many methods are used for removal and recovery. In recent years, with the development of gas separation membranes, the use of gas separation membranes has also been considered for the recovery of hydrocarbon vapors. This method takes advantage of the fact that gas permeates from the high-pressure side to the low-pressure side, and the gas permeation rate at this time differs depending on the gas component even through the same membrane. In particular, silicone and butadiene-acrylonitrile membranes have a higher permeation rate for hydrocarbon vapors than air, and are therefore preferred for use in recovering hydrocarbon vapors mixed in air.
発明が解決しようとする問題点
しかし上記したように従来検討されているものは蒸気回
収の容易な、即ち１成分の炭化水素が空気中に混入した
系で、しかもその蒸気と空気の透過速度比が太き（異る
トルエンなどに限られる。Problems to be Solved by the Invention However, as mentioned above, what has been studied so far is a system in which vapor recovery is easy, that is, a system in which one component of hydrocarbon is mixed in the air, and the permeation rate ratio of the vapor to air is low. is thick (limited to different types such as toluene).
これらの蒸気はガス分離膜の片側を真空近くまで圧を下
げることにより高濃度に濃縮され、また真空ポンプ吐出
の常圧下で室温程度まで冷却すれば容易に凝縮し回収で
きるものであって折角のガス分離膜を用いることによる
有利性が少い。These vapors are concentrated to a high concentration by lowering the pressure on one side of the gas separation membrane to near vacuum, and can be easily condensed and recovered by cooling to room temperature under the normal pressure of the vacuum pump discharge. There are fewer advantages to using gas separation membranes.
特にガソリン蒸気のように幅広い炭化水素成分を含有し
たものについては経済的に分離回収する方法が見当らな
い。In particular, there is no economical method to separate and recover gasoline vapor that contains a wide range of hydrocarbon components.
「発明の構成」
問題点を解決するための手段
空気と炭化水素蒸気との混合ガスをガス分離膜の透過側
を低圧として前記炭化水素蒸気を主とした透過を図り、
この炭化水素蒸気を主とした混合ガスを加圧して回収塔
に送ると共に炭化水素濃度の低減された処理済みガスを
大気中に放散させ、前記の炭化水素蒸気を主とした混合
ガスを加圧して回収塔に送りタンク貯蔵液を吸収液とし
て該炭化水素蒸気を吸収させることを特徴とする混合ガ
スから炭化水素蒸気回収方法。"Structure of the Invention" Means for Solving the Problems A mixed gas of air and hydrocarbon vapor is made to have a low pressure on the permeation side of a gas separation membrane so that the hydrocarbon vapor mainly permeates,
This mixed gas mainly composed of hydrocarbon vapor is pressurized and sent to the recovery tower, and the treated gas with reduced hydrocarbon concentration is released into the atmosphere, and the mixed gas mainly composed of hydrocarbon vapor is pressurized. 1. A method for recovering hydrocarbon vapor from a mixed gas, characterized in that the hydrocarbon vapor is absorbed by using a liquid stored in a tank as an absorption liquid to be sent to a recovery tower.
作用
ガス分離膜において炭化水素蒸気を主とした透過が図ら
れる。In the working gas separation membrane, mainly hydrocarbon vapor is permeated.
このガス分離膜を透過によって得られた炭化水素蒸気を
主とした混合ガスが回収塔において、タンク貯蔵液を吸
収液とした接触が図られる。A mixed gas mainly consisting of hydrocarbon vapor obtained by permeation through this gas separation membrane is brought into contact with the tank storage liquid as an absorption liquid in a recovery tower.
上記回収塔で吸収液に回収されなかった炭化水素蒸気含
有の混合ガスは前記ガス分離膜に対する入側に戻されて
再循環される。The hydrocarbon vapor-containing mixed gas that is not recovered into the absorption liquid in the recovery tower is returned to the inlet side of the gas separation membrane and recycled.
実施例
上記したような本発明について更に説明すると、本発明
方法の主要部分は空気と炭化水素蒸気を分離するガス分
離膜、該ガス分離膜の透過側を負圧にし、炭化水素蒸気
を吸引する真空ポンプと、分離した炭化水素蒸気を吸収
する回収塔から構成される。即ち第１図にはガソリン蒸
気と空気との混合ガスを処理する設備の１例が示されて
おり、混合ガス１はブロワ−２で加圧された後に回収塔
８からのリターンガス１１と混合され、該ガスはフィル
ターセパレータ３でミストやダストが除去された後にガ
ス分離膜４に入る。然してこのガス分離膜４では前記混
合ガスが相対的に透過し易い分子量の大きいガソリン蒸
気が多く除かれ、ガソリン濃度が５ｖｏ１％以下のよう
に低い処理済みガス５となって大気中に放散される。一
方このガス分離膜４を透過したガソリン蒸気濃度の高い
混合ガス６は真空ポンプ７で吸引された後に加圧されて
回収塔８に入る。EXAMPLES To further explain the present invention as described above, the main parts of the method of the present invention include a gas separation membrane that separates air and hydrocarbon vapor, and a negative pressure on the permeate side of the gas separation membrane to suck in the hydrocarbon vapor. It consists of a vacuum pump and a recovery column that absorbs the separated hydrocarbon vapors. That is, FIG. 1 shows an example of equipment for processing a mixed gas of gasoline vapor and air, in which the mixed gas 1 is pressurized by a blower 2 and then mixed with return gas 11 from a recovery tower 8. After the mist and dust are removed by the filter separator 3, the gas enters the gas separation membrane 4. However, in this gas separation membrane 4, a large amount of gasoline vapor with a large molecular weight through which the mixed gas is relatively easily permeable is removed, and the treated gas 5 with a low gasoline concentration of 5 vol 1% or less is released into the atmosphere. . On the other hand, the mixed gas 6 having a high concentration of gasoline vapor that has passed through the gas separation membrane 4 is sucked by a vacuum pump 7, is pressurized, and enters a recovery tower 8.
回収塔８は、混合ガス６が空気をそれなりに含んでいる
のでガソリン蒸気の回収効率をよ・くするために大気圧
より少し高い圧力条件で運転され、該回収塔８の底部か
ら入って来た混合ガスは、充填層を上昇しながらガソリ
ン供給ポンプ９によって塔頂部に供給されたガソリン液
と直接接触して吸収され、即ちガソリンとして回収され
てガソリンリターンポンプ１０によってガソリンタンク
に戻される。ここで吸収されなかったガスはガソリン蒸
気を若干含んでいるので、フィルターセパレータ３の前
に戻して再循環される。Since the mixed gas 6 contains a certain amount of air, the recovery tower 8 is operated at a pressure slightly higher than atmospheric pressure in order to improve the recovery efficiency of gasoline vapor. The mixed gas is absorbed by directly contacting the gasoline liquid supplied to the top of the tower by the gasoline supply pump 9 while rising through the packed bed, that is, recovered as gasoline and returned to the gasoline tank by the gasoline return pump 10. Since the gas not absorbed here contains some gasoline vapor, it is returned to the front of the filter separator 3 and recirculated.
なお上述の場合において、ブロワ−２をコンプレッサー
に置き換えて混合ガスを数ｋｇ ／ ａｎ！ Ｇまで加
圧し、ガス分離膜４を透過したガス６の圧力を大気圧以
上となし、リターンガス１１を前記したコンプレッサー
のサクションに戻せば真空ポンプ７が不必要となり、よ
り簡単な設備となる。In the above case, the blower 2 can be replaced with a compressor to reduce the amount of mixed gas of several kg/an! If the pressure of the gas 6 that has passed through the gas separation membrane 4 is increased to above atmospheric pressure, and the return gas 11 is returned to the suction of the compressor, the vacuum pump 7 will become unnecessary, resulting in simpler equipment.
具体的な操業例について説明するならば、略３５ｖｏ１
％のガソリン蒸気と６５ｖｏ１％の空気を含有した４０
ＯＮｒ＋？／Ｈｒの混合ガス１をブロワ−２で加圧した
回収塔８からの約５ＯＮｎ？／Ｈｒのリターンガスと混
合し、フィルターセパレータ３でミストやダストを除去
してからガス分離膜４で分離し、ガソリン濃度が５ｖ０
１％以下となったものが大気中に放散５される。一方ガ
ス分離膜４を透過したガソリン蒸気濃度が約３Ｑｖｏ１
％である混合ガス６は真空ポンプ７で４０ｍＨｇ程度で
吸引されてから加圧されて回収塔８に導入され、約２０
ｖｏ１％含んでいる前記混合ガス６が１ｋｇ／ｃｉＧ程
度の圧力で運転されている該回収塔８の充填層を上昇し
、塔頂部のガソリン液と直接に接触して吸収された。吸
収されなかったガスはガソリン蒸気を約１４％含有して
おり、フィルターセパレータ３に戻して再循環され、こ
の場合においては爆発性雰囲気であるガスを略常圧下で
適切に処理することができた。To explain a specific example of operation, approximately 35 vol.
40% gasoline vapor and 65vo1% air
ONr+? /Hr mixed gas 1 from the recovery tower 8 pressurized by the blower 2 about 5 ONn? /Hr of return gas, removes mist and dust with a filter separator 3, and then separates with a gas separation membrane 4, resulting in a gasoline concentration of 5v0.
What is below 1% is released into the atmosphere. On the other hand, the concentration of gasoline vapor that has passed through the gas separation membrane 4 is approximately 3Qvo1
The mixed gas 6, which is about
The mixed gas 6 containing vol. 1% rose through the packed bed of the recovery tower 8 operated at a pressure of about 1 kg/ciG, came into direct contact with the gasoline liquid at the top of the tower, and was absorbed. The unabsorbed gas contained approximately 14% gasoline vapor and was recycled back to the filter separator 3, allowing the gas, which in this case was an explosive atmosphere, to be properly disposed of under approximately normal pressure. .
「発明の効果」
以上説明したような本発明によるときは空気と炭化水素
蒸気との混合ガスからガス分離膜を用い、ガソリンなど
幅広い炭化水素成分に関して経済的且つ有効に分離回収
することができるものであって、工業的にその効果の大
きい発明である。"Effects of the Invention" According to the present invention as explained above, a wide range of hydrocarbon components such as gasoline can be economically and effectively separated and recovered from a mixed gas of air and hydrocarbon vapor using a gas separation membrane. This invention is industrially highly effective.
図面は本発明の実施態様を示すものであって、本発明方
法を実施する設備の１例について概要を示した説明図で
ある。
然してこの図面において、１は処理すべき混合ガス、２
はブロワ−１３はフィルターセパレータ、４はガス分離
膜、５は濃度の低い処理済みガス、６はガソリン濃度の
高い混合ガス、７は真空ポンプ、８は回収塔、９はガソ
リン供給ポンプ、１０はガソリンリターンポンプ、１１
はリターンガスを示すものである。The drawings show embodiments of the present invention, and are explanatory diagrams showing an outline of an example of equipment for carrying out the method of the present invention. However, in this drawing, 1 indicates the mixed gas to be treated, 2
is a blower, 13 is a filter separator, 4 is a gas separation membrane, 5 is a processed gas with a low concentration, 6 is a mixed gas with a high gasoline concentration, 7 is a vacuum pump, 8 is a recovery tower, 9 is a gasoline supply pump, 10 is a Gasoline return pump, 11
indicates return gas.
Claims (3)
透過側を低圧として前記炭化水素蒸気を主とした透過を
図り、この炭化水素蒸気を主とした混合ガスを加圧して
回収塔に送ると共に炭化水素濃度の低減された処理済み
ガスを大気中に放散させ、前記の炭化水素蒸気を主とし
た混合ガスを加圧して回収塔に送りタンク貯蔵液を吸収
液として該炭化水素蒸気を吸収させることを特徴とする
混合ガスから炭化水素蒸気回収方法。(1) The mixed gas of air and hydrocarbon vapor is made to have a low pressure on the permeation side of the gas separation membrane to allow the hydrocarbon vapor to mainly pass through, and the mixed gas containing mainly the hydrocarbon vapor is pressurized to the recovery column. At the same time, the treated gas with reduced hydrocarbon concentration is diffused into the atmosphere, and the mixed gas mainly consisting of hydrocarbon vapor is pressurized and sent to a recovery tower, where the liquid stored in the tank is used as an absorption liquid to absorb the hydrocarbon vapor. A method for recovering hydrocarbon vapor from a mixed gas, characterized by absorbing .
る特許請求の範囲第１項に記載の混合ガス炭化水素蒸気
回収方法。(2) The mixed gas hydrocarbon vapor recovery method according to claim 1, wherein the permeation side of the gas separation membrane is brought to negative pressure by a vacuum pump.
離膜の透過側を大気圧以上として炭化水素蒸気を主とし
た混合ガスを回収塔に送る特許請求の範囲第１項に記載
の混合ガスから炭化水素蒸気回収方法。(3) The mixed gas is pressurized before entering the gas separation membrane, and the permeation side of the gas separation membrane is set to above atmospheric pressure, and the mixed gas mainly consisting of hydrocarbon vapor is sent to the recovery tower as set forth in claim 1. Hydrocarbon vapor recovery method from mixed gas.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61120311A JPS62279825A (en) | 1986-05-27 | 1986-05-27 | Method of recovering hydrocarbon vapor from mixed gas |
| US07/051,928 US4772295A (en) | 1986-05-27 | 1987-05-19 | Method for recovering hydrocarbon vapor |
| DE8787107684T DE3784374T2 (en) | 1986-05-27 | 1987-05-26 | METHOD FOR RECOVERY OF HYDROCARBON DAMPERS. |
| EP87107684A EP0247585B1 (en) | 1986-05-27 | 1987-05-26 | Method for recovering hydrocarbon vapor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61120311A JPS62279825A (en) | 1986-05-27 | 1986-05-27 | Method of recovering hydrocarbon vapor from mixed gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62279825A true JPS62279825A (en) | 1987-12-04 |
Family
ID=14783100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61120311A Pending JPS62279825A (en) | 1986-05-27 | 1986-05-27 | Method of recovering hydrocarbon vapor from mixed gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62279825A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176420A (en) * | 1987-12-28 | 1989-07-12 | Ube Ind Ltd | Separation of gas |
| JPH0221920A (en) * | 1988-02-26 | 1990-01-24 | Gkss Forschungszentrum Geesthacht Gmbh | Extraction of organic compound from air/permanent gas mixture |
| US6772740B2 (en) | 2002-04-17 | 2004-08-10 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel treating device and method |
| US6786207B2 (en) | 2002-04-17 | 2004-09-07 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel emission control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426965A (en) * | 1977-08-03 | 1979-02-28 | Sankyo Setsukei Jimushiyo Yuug | Hydrocarbon vapor collection appartus |
| JPS6142319A (en) * | 1984-07-31 | 1986-02-28 | メンブレン・テクノロジ−・アンド リサ−チ・インコ−ポレイテツド | Recovery of organic vapor from air |
-
1986
- 1986-05-27 JP JP61120311A patent/JPS62279825A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426965A (en) * | 1977-08-03 | 1979-02-28 | Sankyo Setsukei Jimushiyo Yuug | Hydrocarbon vapor collection appartus |
| JPS6142319A (en) * | 1984-07-31 | 1986-02-28 | メンブレン・テクノロジ−・アンド リサ−チ・インコ−ポレイテツド | Recovery of organic vapor from air |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176420A (en) * | 1987-12-28 | 1989-07-12 | Ube Ind Ltd | Separation of gas |
| JPH0221920A (en) * | 1988-02-26 | 1990-01-24 | Gkss Forschungszentrum Geesthacht Gmbh | Extraction of organic compound from air/permanent gas mixture |
| US6772740B2 (en) | 2002-04-17 | 2004-08-10 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel treating device and method |
| US6786207B2 (en) | 2002-04-17 | 2004-09-07 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel emission control system |
| DE10317583B4 (en) * | 2002-04-17 | 2012-03-01 | Toyota Jidosha Kabushiki Kaisha | Apparatus and method for treating vaporized fuel for an internal combustion engine |
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