JP3008064B2 - Solvent gas absorbing liquid composition and method for recovering solvent gas using the same - Google Patents
Solvent gas absorbing liquid composition and method for recovering solvent gas using the sameInfo
- Publication number
- JP3008064B2 JP3008064B2 JP5343322A JP34332293A JP3008064B2 JP 3008064 B2 JP3008064 B2 JP 3008064B2 JP 5343322 A JP5343322 A JP 5343322A JP 34332293 A JP34332293 A JP 34332293A JP 3008064 B2 JP3008064 B2 JP 3008064B2
- Authority
- JP
- Japan
- Prior art keywords
- solvent gas
- solvent
- gas
- absorbing liquid
- et0h
- 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.)
- Expired - Fee Related
Links
- 239000002904 solvent Substances 0.000 title claims description 84
- 239000007788 liquid Substances 0.000 title claims description 50
- 239000000203 mixture Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 22
- 229930195729 fatty acid Natural products 0.000 claims description 22
- 239000000194 fatty acid Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- -1 fatty acid ester Chemical class 0.000 claims description 16
- 229940057995 liquid paraffin Drugs 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- AEMRFAOFKBGASW-UHFFFAOYSA-M Glycolate Chemical compound OCC([O-])=O AEMRFAOFKBGASW-UHFFFAOYSA-M 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 description 31
- 238000010521 absorption reaction Methods 0.000 description 25
- 230000002745 absorbent Effects 0.000 description 18
- 239000002250 absorbent Substances 0.000 description 18
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 238000011109 contamination Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229960003656 ricinoleic acid Drugs 0.000 description 4
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000002683 reaction inhibitor Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- MUHFRORXWCGZGE-KTKRTIGZSA-N 2-hydroxyethyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCO MUHFRORXWCGZGE-KTKRTIGZSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011552 falling film Substances 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 229940095098 glycol oleate Drugs 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000012454 non-polar solvent Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- WECGLUPZRHILCT-GSNKCQISSA-N 1-linoleoyl-sn-glycerol Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(=O)OC[C@@H](O)CO WECGLUPZRHILCT-GSNKCQISSA-N 0.000 description 1
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical class CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- DAKZLOJXUDPQIL-UHFFFAOYSA-N 2-butyl-4-ethylphenol Chemical group CCCCC1=CC(CC)=CC=C1O DAKZLOJXUDPQIL-UHFFFAOYSA-N 0.000 description 1
- MCUFTLAXJMCWPZ-UHFFFAOYSA-N 3-butyl-2-methylphenol Chemical group CCCCC1=CC=CC(O)=C1C MCUFTLAXJMCWPZ-UHFFFAOYSA-N 0.000 description 1
- ADRNSOYXKABLGT-UHFFFAOYSA-N 8-methylnonyl diphenyl phosphite Chemical group C=1C=CC=CC=1OP(OCCCCCCCC(C)C)OC1=CC=CC=C1 ADRNSOYXKABLGT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- MGMXGCZJYUCMGY-UHFFFAOYSA-N tris(4-nonylphenyl) phosphite Chemical group C1=CC(CCCCCCCCC)=CC=C1OP(OC=1C=CC(CCCCCCCCC)=CC=1)OC1=CC=C(CCCCCCCCC)C=C1 MGMXGCZJYUCMGY-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶剤ガスの吸収、回収
を容易にするための溶剤ガス吸収液組成物、及びそれを
用いた溶剤ガスの回収方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solvent gas absorbing liquid composition for facilitating absorption and recovery of a solvent gas, and a method for recovering a solvent gas using the same.
【０００２】[0002]
【従来の技術】従来の溶剤ガス回収方法としては次の三
方法が主体である。 活性炭による吸着回収方法 冷却回収方法 吸収液による吸収回収方法2. Description of the Related Art Conventional solvent gas recovery methods mainly include the following three methods. Adsorption recovery method using activated carbon Cooling recovery method Absorption recovery method using absorbent
【０００３】[0003]
【発明が解決しようとする課題】上記の活性炭による
吸着回収方法は、親水性溶剤の回収において希釈された
溶剤しか回収できない。即ち、活性炭は大気中の水分保
留が高く、回収再生に加熱Ｎ2 ガスを使っても水に希釈
された溶剤しか回収できなかった。又、の冷却回収方
法は、数万ｐｐｍ以上の高濃度溶剤ガスでないと回収が
不可能であり、且つ処理ガス中の溶剤濃度が高すぎる。
の吸収液による吸収回収方法は、回収溶剤への吸収液
成分の混入が高く、ファインケミカル分野での活用は不
可能であった。本発明は上記問題点を解消し、親水性溶
剤ガス及び非親水性溶剤ガスを個々に、又は同時に希釈
することなく高濃度で、且つ高品質に回収可能な溶剤ガ
ス吸収液組成物、及びそれを用いた溶剤ガスの回収方法
を提供することを目的とする。又、活性炭単独使用の上
記の問題を、活性炭表面に水分を吸収しない脂肪酸エス
テルの保護膜をつくり、利用可能にすることを目的とす
る。The above-described method of adsorption and recovery using activated carbon can only recover a diluted solvent in the recovery of a hydrophilic solvent. That is, activated carbon has a high retention of water in the atmosphere, and only a solvent diluted in water could be recovered even when heated N 2 gas was used for recovery. In the cooling and recovery method described above, recovery cannot be performed unless the concentration of the solvent gas is as high as tens of thousands ppm or more, and the concentration of the solvent in the processing gas is too high.
In the method of absorbing and recovering with the use of an absorbent, the absorption liquid component is highly mixed into the solvent to be recovered, and cannot be used in the field of fine chemicals. The present invention solves the above-mentioned problems, and a solvent gas absorbing liquid composition capable of recovering a hydrophilic solvent gas and a non-hydrophilic solvent gas in a high concentration without diluting them individually or simultaneously, and having a high quality, and It is an object of the present invention to provide a method for recovering a solvent gas using a solvent. Another object of the present invention is to provide a protective film of a fatty acid ester which does not absorb moisture on the surface of activated carbon to make the above problem of using activated carbon alone available.
【０００４】[0004]
【課題を解決するための手段】第１の本発明は、上述三
方法の問題点を完全に解消するための溶剤ガス吸収液組
成物、及びそれを用いた溶剤ガスの回収方法であって、
高級脂肪酸エステル、高級脂肪酸ジエステルに流動パラ
フィン、及び酸化防止剤、特に好ましくは、高級脂肪酸
グリセリド、高級アルコールグリコレートに流動パラフ
ィン及び酸化防止剤から成る溶剤ガス吸収液組成物を用
いることを特徴として構成されている。第２の本発明
は、木質活性炭で０．１〜５０Åの細孔を保有する微粉
末を請求項１、又は請求項２の溶剤ガス吸収液組成物に
加えたスラリー状溶剤ガス吸収液組成物としたことを特
徴として構成されている。A first aspect of the present invention is a solvent gas absorbing liquid composition for completely solving the above three problems, and a method for recovering a solvent gas using the same.
Liquid paraffin and an antioxidant are used for the higher fatty acid ester and the higher fatty acid diester, and particularly preferably, a solvent gas absorbing liquid composition comprising liquid paraffin and an antioxidant is used for the higher fatty acid glyceride and the higher alcohol glycolate. Have been. A second aspect of the present invention is a slurry-type solvent gas absorbing liquid composition obtained by adding fine powder of woody activated carbon having pores of 0.1 to 50 ° to the solvent gas absorbing liquid composition according to claim 1 or 2. The configuration is characterized by the following.
【０００５】この発明の要旨は、１５０℃迄以下では蒸
発減量が殆ど無い高級脂肪酸エステル、高級脂肪酸ジエ
ステルに反応抑止剤として流動パラフィンが添加され、
更に高分子酸化防止剤が添加された溶剤ガス吸収液組成
物、又は高級脂肪酸グリセリド及び高級アルコールグリ
コレートに反応抑止剤としての流動パラフィンが添加さ
れ、更に高分子酸化防止剤が添加された溶剤ガス吸収液
組成物であって、石油系溶剤ガス、塩素系溶剤ガス、親
水性溶剤ガスを完全に吸収し溶解した後に、吸収した溶
剤の沸点＋０〜３０℃、好ましくは＋５〜＋２０℃、特
に好ましくは＋７〜＋１５℃の加熱で吸収液から吸収溶
剤を蒸発離脱することにより吸収液成分が殆ど混じらな
い高品質な溶剤の回収ができる溶剤ガス吸収液組成物、
及びそれを用いた溶剤ガスの回収方法である。[0005] The gist of the present invention is that liquid paraffin is added as a reaction inhibitor to higher fatty acid esters and higher fatty acid diesters which have almost no loss of evaporation below 150 ° C.
In addition, a solvent gas absorbing liquid composition to which a polymer antioxidant is added, or liquid paraffin as a reaction inhibitor added to higher fatty acid glyceride and higher alcohol glycolate, and a solvent gas to which a polymer antioxidant is further added Absorbent liquid composition, after completely absorbing and dissolving petroleum-based solvent gas, chlorine-based solvent gas, and hydrophilic solvent gas, the boiling point of the absorbed solvent is +0 to 30 ° C, preferably +5 to + 20 ° C, and particularly preferably. Is a solvent gas absorbing liquid composition capable of recovering a high-quality solvent which hardly contains the absorbing liquid component by evaporating and removing the absorbing solvent from the absorbing liquid by heating at +7 to + 15 ° C.
And a method for recovering a solvent gas using the same.
【０００６】こゝで高級脂肪酸エステル、特に好ましい
高級脂肪酸グリセリドとは、リシノール酸グリセリド、
リノール酸グリセリド、カプロン酸グリセリド等で、本
発明では特にリシノール酸グリセリドを好ましく用いる
ことができる。The higher fatty acid esters, particularly preferred higher fatty acid glycerides are ricinoleic acid glyceride,
In the present invention, particularly, ricinoleic acid glyceride can be preferably used, such as linoleic acid glyceride and caproic acid glyceride.
【０００７】高級脂肪酸ジエステル中で特に好ましい高
級アルコールグリコーレトとは、ブチルアルコールグリ
コレート、オクチルアルコールグリコレート、ペンタア
ルコールグリコレート等で、本発明では特にブチルアル
コールグリコレートを好ましく用いることができる。Among the higher fatty acid diesters, particularly preferred higher alcohol glycolates are butyl alcohol glycolate, octyl alcohol glycolate, pentaalcohol glycolate and the like. In the present invention, butyl alcohol glycolate is particularly preferably used.
【０００８】流動パラフィンは、極性基保持溶剤の反応
抑止剤として、又、非極性溶剤に対しては吸収助剤とし
て添加されるものである。この流動パラフィンとしては
パラフィン系炭化水素、シクロパラフィン系炭化水素、
特に本発明で好ましい流動パラフィンはパラフィン系炭
化水素の２６５℃以上、好ましくは２８０℃以上、特に
好ましくは３００〜３５０℃留分である。２６５℃未満
では蒸発減量が多くなると共に、、回収溶剤中への不純
物混入が多くなり、且つランニングコスト高になり実用
化は困難である。[0008] Liquid paraffin is added as a reaction inhibitor for a polar group-bearing solvent and as an absorption aid for non-polar solvents. As this liquid paraffin, paraffinic hydrocarbon, cycloparaffinic hydrocarbon,
Particularly preferred liquid paraffin in the present invention is a fraction of 265 ° C. or higher, preferably 280 ° C. or higher, and more preferably 300 to 350 ° C. of paraffinic hydrocarbon. If the temperature is lower than 265 ° C., the amount of evaporation loss increases, the amount of impurities mixed in the recovered solvent increases, the running cost increases, and practical use is difficult.
【０００９】酸化防止剤は、溶剤ガス吸収液が溶剤ガス
吸収の際気液接触を行うときに酸化されるのを防ぎ、溶
剤ガス吸収液の耐用期間を延ばすものである。代表例と
してＮ−オクタデシルジターシャリブチルハイドロフェ
ニルプロピオネート、ジターシャリブチルメチルフェノ
ール、２・６−ターシャリブチル−４−エチルフェノー
ル、ジフェニルイソデシルフォスファイト、トリノニル
フェニルフォスファイト等のフェノール系酸化防止剤と
燐系酸化防止剤を好ましく用いることができる。本発明
は、特にＮ−オクタデシルジターシャリブチルハイドロ
フェニルプロピオネートを好ましく用いることができ
る。The antioxidant is intended to prevent the solvent gas absorbing liquid from being oxidized when the solvent gas absorbing liquid and gas-liquid contact, and to extend the useful life of the solvent gas absorbing liquid. Representative examples include phenol-based antioxidants such as N-octadecyl ditertiary butyl hydrophenyl propionate, ditertiary butyl methyl phenol, 2.6-tertiary butyl-4-ethyl phenol, diphenyl isodecyl phosphite, and trinonyl phenyl phosphite. An agent and a phosphorus-based antioxidant can be preferably used. In the present invention, N-octadecyl ditert-butyl hydrophenylpropionate can be particularly preferably used.
【００１０】木質活性炭は０．１〜５０Åの細孔を有
し、好ましくは２〜３０Å、特に好ましくは１０〜２０
Åの細孔容積の大きい粉末活性炭である。溶剤ガス分子
の大きさが２〜１０Åであることから１０〜２０Åの細
孔を保有する活性炭が最も優れた吸着能を示す。０．１
Å以下の細孔では溶剤ガス分子径より小さく吸着不可、
５０Å以上では溶剤ガス分子径が２〜１０Åであるため
自由に出入りし、吸着能が極端に低下する。粒度は１０
０〜３５０メッシュの粉末活性炭が使用できるが、特に
好ましくは２００〜２５０メッシュである。これはスラ
リー吸収液として粉末活性炭が安定した懸濁状態を構成
するためである。スラリー状溶剤ガス吸収液に使用でき
る物質としてはα錫酸又は塩化錫から作る酸化第二錫が
３０〜５０Åの細孔を有し溶剤吸着能があり、使用可能
である。又、酸化亜鉛も同等の吸着能を有し使用可能で
ある。Woody activated carbon has pores of 0.1 to 50 °, preferably 2 to 30 °, particularly preferably 10 to 20 °.
活性 is a powdered activated carbon with a large pore volume. Since the size of the solvent gas molecule is 2 to 10 °, activated carbon having pores of 10 to 20 ° shows the best adsorption ability. 0.1
細孔 In the pores below, it is impossible to adsorb smaller than the solvent gas molecular diameter,
At 50 ° or more, since the solvent gas molecular diameter is 2 to 10 °, the solvent gas freely enters and exits, and the adsorbability is extremely reduced. Particle size is 10
Powdered activated carbon of 0 to 350 mesh can be used, and particularly preferably 200 to 250 mesh. This is because the powdered activated carbon forms a stable suspension state as a slurry absorbing liquid. As a substance that can be used for the slurry-like solvent gas absorbing liquid, stannic oxide made of α-stannic acid or tin chloride has a pore size of 30 to 50 ° and has a solvent adsorbing ability and can be used. Zinc oxide also has the same adsorptive capacity and can be used.
【００１１】ここで好ましい溶剤ガス吸収液組成物は以
下のものである。 高級脂肪酸エステル、又は高級脂肪酸グリセリド ５〜９０％ 好ましくは １５〜７５％、 特に好ましくは ３０〜６０％ 高級脂肪酸ジエステル又は高級アルコールグリコレート ５〜９０％ 好ましくは １５〜７５％ 特に好ましくは ３０〜６０％ 流動パラフィン ５〜９０％ 好ましくは １０〜７０％ 特に好ましくは ２０〜６０％ 酸化防止剤 ０．０５〜３．０％ 好ましくは ０．１〜２．５％ 特に好ましくは ０．５〜１．５％ 特に好ましい第２の本発明のスラリー状溶剤ガス吸収液
組成物は以下のものである。 高級脂肪酸エステル、又は高級脂肪酸グリセリド ５〜９０％ 好ましくは １５〜７５％ 特に好ましくは ２０〜６０％ 高級脂肪酸ジエステル又は高級アルコールグリコレート ５〜９０％ 好ましくは １０〜７５％ 特に好ましくは １５〜５０％ 流動パラフィン ２〜９０％ 好ましくは ３〜７０％ 特に好ましくは ５〜５０％ 酸化防止剤 ０．０５〜３．０％ 好ましくは ０．１〜２．５％ 特に好ましくは ０．５〜１．５％ 木質活性炭 ５〜８０％ 好ましくは １０〜３０％ 特に好ましくは １５〜２５％ 尚、混合％は全て重量％とする。Here, preferred solvent gas absorbing liquid compositions are as follows. Higher fatty acid ester or higher fatty acid glyceride 5 to 90%, preferably 15 to 75%, particularly preferably 30 to 60% higher fatty acid diester or higher alcohol glycolate 5 to 90%, preferably 15 to 75% particularly preferably 30 to 60% % Liquid paraffin 5-90% preferably 10-70% particularly preferably 20-60% antioxidant 0.05-3.0% preferably 0.1-2.5% particularly preferably 0.5-1. 5% Particularly preferred second slurry solvent gas absorbing liquid composition of the present invention is as follows. Higher fatty acid ester or higher fatty acid glyceride 5 to 90%, preferably 15 to 75%, particularly preferably 20 to 60% higher fatty acid diester or higher alcohol glycolate 5 to 90%, preferably 10 to 75%, particularly preferably 15 to 50% Liquid paraffin 2-90%, preferably 3-70%, particularly preferably 5-50%, antioxidant 0.05-3.0%, preferably 0.1-2.5%, particularly preferably 0.5-1.5 % Wood activated carbon 5 to 80%, preferably 10 to 30%, particularly preferably 15 to 25%.
【００１２】高級脂肪酸エステル又は高級脂肪酸グリセ
リド又は高級脂肪酸ジエステル又は高級アルコールグリ
コレートが５重量％未満の場合は極性基保持溶剤の吸収
効率に問題があり、９０重量％を越えると非極性溶剤の
吸収効率が悪くなると同時に吸収液の使用粘度限界であ
る。When the content of the higher fatty acid ester, higher fatty acid glyceride, higher fatty acid diester or higher alcohol glycolate is less than 5% by weight, there is a problem in the absorption efficiency of the polar group-holding solvent. At the same time as the efficiency becomes poor, it is the working viscosity limit of the absorbing solution.
【００１３】流動パラフィンが２重量％未満の場合は、
反応抑制効果及び非極性溶剤の吸収効率に問題があり、
９０重量％を越えると極性基保持溶剤の吸収効率に問題
がある。When the liquid paraffin is less than 2% by weight,
There is a problem with the reaction suppression effect and the absorption efficiency of the non-polar solvent,
If it exceeds 90% by weight, there is a problem in the absorption efficiency of the polar group-holding solvent.
【００１４】酸化防止剤は０．０５重量％未満の場合に
は酸化防止効果に問題があり、３．０重量％を越えても
酸化防止効果の上昇はない。If the amount of the antioxidant is less than 0.05% by weight, there is a problem in the antioxidant effect, and if it exceeds 3.0% by weight, the antioxidant effect does not increase.
【００１５】本発明の溶剤ガス吸収液組成物は、吸収液
の熱安定性が高くＪＩＳ−Ｋ−２５４０による加熱蒸発
減量が殆ど無く、溶剤との相溶性が高く、且つ水不溶性
であるため回収溶剤への水分保留が小さく、親水性溶剤
の回収においても９５％以上の回収溶剤濃度が確保で
き、吸収液成分の混入は０．５ｐｐｍ以下とすることが
できる。The solvent gas absorbing liquid composition of the present invention has high thermal stability of the absorbing liquid, hardly loses weight due to heat evaporation according to JIS-K-2540, has high compatibility with the solvent, and is insoluble in water. The retention of water in the solvent is small, the recovered solvent concentration of 95% or more can be ensured even in the recovery of the hydrophilic solvent, and the mixing of the absorbing liquid component can be 0.5 ppm or less.
【００１６】[0016]
【実施例】本発明の溶剤ガスの回収方法の実施例を図面
に基づいて説明する。 実施例 １ 図１に示す溶剤ガス吸収・回収装置により２０００ｐｐ
ｍに濃度調節されたエタノールを連続に吸収させ回収を
行った。 吸収液組成 リシノール酸グリセリド ４５．０％ ブチルアルコールグリコレート ４５．０％ 流動パラフィン Ｎ−７０ １０．０％ Ｎ−オクタデシルジターシャリブチル −ハイドロフェニルプロピオネート ０．５％（外）DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for recovering a solvent gas according to the present invention will be described with reference to the drawings. Example 1 2000 pp by the solvent gas absorption / recovery apparatus shown in FIG.
The ethanol whose concentration was adjusted to m was continuously absorbed and collected. Absorbent liquid composition Ricinoleic acid glyceride 45.0% Butyl alcohol glycolate 45.0% Liquid paraffin N-70 10.0% N-octadecyl ditertiary butyl-hydrophenyl propionate 0.5% (outside)
【００１７】具体的には排出ファン３により１０ＮＭ3
／ｍｉｎのガスを１の一次吸収塔（φ４００×２２００
Ｈ）に導き、こゝで２０リットル／ｍｉｎの一次吸収液
のシャワーを行い、続いて２の二次仕上吸収塔（φ４０
０×９００Ｌ）にて１５リットル／ｍｉｎの二次吸収液
のシャワーを行い、デミスト後の排出ファン３より処理
ガスを排出する。一次吸収液貯槽４の一次吸収液中の溶
存アルコール濃度は５．０％、二次吸収液貯槽５の二次
吸収液中の溶存アルコール濃度は１．０％で連続運転す
る。More specifically, 10 NM 3
/ Min gas in the primary absorption tower (φ400 × 2200)
H), a shower of the primary absorbing solution at 20 liter / min is performed, and then a secondary finishing absorber (φ40)
(0 × 900 L), the secondary absorption liquid is showered at 15 liter / min, and the processing gas is discharged from the discharge fan 3 after demisting. Continuous operation is performed with the dissolved alcohol concentration in the primary absorbent in the primary absorbent storage tank 4 being 5.0% and the dissolved alcohol concentration in the secondary absorbent in the secondary absorbent liquid storage tank 5 being 1.0%.
【００１８】溶剤ガス吸収液の再生は一次吸収液貯槽４
より吸収液を再生ポンプ９により１リットル／ｍｉｎで
引抜き、再生用吸収液加熱器１０により加熱し、流下膜
式蒸発缶１１でＮ2 ガスをキャリーガスとして吸収液中
のエタノールを蒸発させ、溶剤ガス凝縮器１５にて液化
し、溶剤回収タンク１６に回収する。The regeneration of the solvent gas absorbing liquid is performed in the primary absorbing liquid storage tank 4.
The absorbing liquid was drawn out at a rate of 1 liter / min by a regenerating pump 9 and heated by a regenerating absorbing liquid heater 10 to evaporate ethanol in the absorbing liquid in a falling film evaporator 11 using N 2 gas as a carry gas. It is liquefied in the gas condenser 15 and collected in the solvent recovery tank 16.
【００１９】再生の終った溶剤ガス吸収液は再生済吸収
液戻しポンプ１８により取り出し、再生済吸収液冷却器
１９にて冷却後、二次吸収液貯槽５に戻り循環使用され
る。再生用吸収液加熱器１０での再生時、吸収液加熱温
度は９０℃で、流下膜式蒸発缶１１は真空ポンプ１３に
より−１５０ｍｍＨｇにて減圧運転した。溶剤ガス濃度
測定は、島津製ガスクロマトグラフＧＣ−１５Ａによる
測定の平均値である。The regenerated solvent gas absorbent is taken out by the regenerated absorbent return pump 18, cooled in the regenerated absorbent cooler 19, returned to the secondary absorbent storage tank 5, and used for circulation. At the time of regeneration with the regeneration absorbent heater 10, the absorption liquid heating temperature was 90 ° C., and the falling film evaporator 11 was operated under reduced pressure at −150 mmHg by the vacuum pump 13. The solvent gas concentration measurement is an average value measured by a gas chromatograph GC-15A manufactured by Shimadzu.
【００２０】 測定結果 原ガス風量 １０ ＮＭ3 ／ｍｉｎ 原ガス温度 １８ ℃ 原ガスＥｔ０Ｈ濃度 ２０００ ｐｐｍ 処理ガスＥｔ０Ｈ濃度 ２５ ｐｐｍ Ｅｔ０Ｈ負荷 ２．４７ ｋｇ／Ｈ Ｅｔ０Ｈ回収量 ２．３５ ｋｇ／Ｈ Ｅｔ０Ｈ回収効率 ９５．１４ ％ 回収Ｅｔ０Ｈ濃度 ９５．２０ ％ 運転時湿度 ４５．０ ％ 不純物混入 ％ ０．５ ｐｐｍ以下 （吸収液成分）Measurement Results Raw Gas Air Flow 10 NM 3 / min Raw Gas Temperature 18 ° C. Raw Gas Et0H Concentration 2000 ppm Processing Gas Et0H Concentration 25 ppm Et0H Load 2.47 kg / H Et0H Recovery 2.35 kg / H Et0H Recovery Efficiency 95.14% Recovered Et0H concentration 95.20% Operating humidity 45.0% Impurity contamination% 0.5 ppm or less (Absorbent component)
【００２１】比較例 １ 使用溶剤ガス吸収液（特公昭５５−４７９３０による流動パラフィンベース） 原ガス風量 １０ ＮＭ3 ／ｍｉｎ 原ガス温度 １５ ℃ 原ガスＥｔ０Ｈ濃度 ２０００ ｐｐｍ 処理ガスＥｔ０Ｈ濃度 ４５０ ｐｐｍ Ｅｔ０Ｈ負荷 ２．４７ ｋｇ／Ｈ Ｅｔ０Ｈ回収量 １．８４ ｋｇ／Ｈ Ｅｔ０Ｈ回収効率 ７４．５０ ％ 回収Ｅｔ０Ｈ濃度 ７５．１ ％ 運転時湿度 ４７．０ ％ 不純物混入 ％ ４００ ｐｐｍ以下 （吸収液成分）Comparative Example 1 Solvent gas absorption liquid used (liquid paraffin base according to Japanese Patent Publication No. 55-47930) Raw gas flow rate 10 NM 3 / min Raw gas temperature 15 ° C. Raw gas Et0H concentration 2000 ppm Processed gas Et0H concentration 450 ppm Et0H load 2 .47 kg / H Et0H recovery amount 1.84 kg / H Et0H recovery efficiency 74.50% Recovered Et0H concentration 75.1% Operating humidity 47.0% Impurity contamination% 400 ppm or less (absorbent liquid component)
【００２２】比較例 ２ 使用溶剤ガス吸収液 ひまし油 ５０．０％ オレイン酸グリコールエステル ５０．０％ スミライザーＢＨＴ（酸化防止剤） ０．５％ 原ガス風量 １０ ＮＭ3 ／ｍｉｎ 原ガス温度 １８ ℃ 原ガスＥｔ０Ｈ濃度 ２０００ ｐｐｍ 処理ガスＥｔ０Ｈ濃度 １５０ ｐｐｍ Ｅｔ０Ｈ負荷 ２．４７ ｋｇ／Ｈ Ｅｔ０Ｈ回収量 ２．２６ ｋｇ／Ｈ Ｅｔ０Ｈ回収効率 ９１．５０ ％ 回収Ｅｔ０Ｈ濃度 ９０．１５ ％ 運転時湿度 ４９．０ ％ 不純物混入 ％ １２０００ ｐｐｍ以下 （吸収液成分オレイン酸グリコールエステル９０％） Ｅｔ０Ｈガスの吸収は良好なるも、不純物蒸留分離不良
で実用化は不可。Comparative Example 2 Solvent Gas Absorbent Used Castor Oil 50.0% Glycol Oleate 50.0% Sumilyzer BHT (Antioxidant) 0.5% Raw Gas Air Flow 10 NM 3 / min Raw Gas Temperature 18 ° C. Raw Gas Et0H concentration 2000 ppm Treated gas Et0H concentration 150 ppm Et0H load 2.47 kg / H Et0H recovery 2.26 kg / H Et0H recovery efficiency 91.50% Recovered Et0H concentration 90.15% Operating humidity 49.0% Impurity contamination % 12000 ppm or less (absorbent glycol oleate 90%) Et0H gas absorption is good, but practical use is not possible due to poor impurity distillation separation.
【００２３】実施例 ２ 図１に示す溶剤ガス吸収、回収装置により２０００ｐｐ
ｍに濃度調節されたエタノールを連続に吸収させて回収
を行った。 スラリー状吸収液組成 リシノール酸グリセリド ５１．５％ ブチルアルコールグリコレート ２０．０％ 流動パラフィン Ｎ−７０ ７．５％ Ｎ−オクタデシルジターシャリブチル −ハイドロフェニルプロピオネート １．０％ 木質活性炭 ２００メッシュ ２０．０％ 尚、混合％は全て重量％とする。処理方法は前述〈００
１７〉、〈００１８〉、〈００１９〉に同じである。Example 2 The solvent gas absorption and recovery apparatus shown in FIG.
The ethanol was adjusted to a concentration of m and continuously collected for recovery. Slurry absorption liquid composition Ricinoleic acid glyceride 51.5% Butyl alcohol glycolate 20.0% Liquid paraffin N-70 7.5% N-octadecyl ditertiary butyl-hydrophenylpropionate 1.0% Wood activated carbon 200 mesh 20. 0% In addition, all the mixing percentages are by weight. The processing method is as described above <00
17>, <0018>, and <0019>.
【００２４】 測定結果 原ガス風量 １０ ＮＭ3 ／ｍｉｎ 原ガス温度 １５ ℃ 原ガスＥｔ０Ｈ濃度 ２０００ ｐｐｍ 処理ガスＥｔ０Ｈ濃度 ２０ ｐｐｍ Ｅｔ０Ｈ負荷 ２．４７ ｋｇ／Ｈ Ｅｔ０Ｈ回収量 ２．４１ ｋｇ／Ｈ Ｅｔ０Ｈ回収効率 ９７．５８ ％ 回収Ｅｔ０Ｈ濃度 ９４．８０ ％ 運転時湿度 ４２．０ ％ 不純物混入 ％ ０．５ ｐｐｍ以下 （吸収液成分）Measurement Result Raw Gas Air Flow 10 NM 3 / min Raw Gas Temperature 15 ° C. Raw Gas Et0H Concentration 2000 ppm Treated Gas Et0H Concentration 20 ppm Et0H Load 2.47 kg / H Et0H Recovery 2.41 kg / H Et0H Recovery Efficiency 97.58% Recovered Et0H concentration 94.80% Operating humidity 42.0% Impurity contamination% 0.5 ppm or less (absorbent component)
【００２５】比較例 ３ 使用活性炭 二村化学ヤシ殻破砕炭 ＣＧ−４８ＢＲ １００％ 粒 度 ３．５〜７．５ ｍｅｓｈ 充填密度 ０．４５ ｇ／ｍｌ 活性炭充填量 ５０００ ｍｌ＝２．２５ｋｇ 溶剤ガス通過空塔速度 ０．６ ｍ／ｓｅｃComparative Example 3 Activated carbon Nimura Chemical crushed coconut shell coal CG-48BR 100% Granularity 3.5-7.5 mesh Packing density 0.45 g / ml Activated carbon filling amount 5000 ml = 2.25 kg Solvent gas passing space Tower speed 0.6 m / sec
【００２６】具体的にはハイブローエアーポンプにより
３１５Ｎｌ／ｍｉｎのガスをヤシ殻活性炭吸着塔（１０
５．３ｍ／ｍφ×８００Ｈ）下部より送入し、処理ガス
は上部より排出する。再生回収は吸着塔下部より１２０
℃に加熱されたＮ2 ガスを５Ｎｌ／ｍｉｎで３０ｍｉｎ
送入してヤシ殻活性炭に吸着されているエタノールを蒸
発させ溶剤ガス凝縮器（蛇管水冷式）にて液化して回収
した。Specifically, a 315 Nl / min gas is supplied by a high blow air pump to a coconut shell activated carbon adsorption tower (10
5.3m / mφ × 800H) The gas is fed from the lower part, and the processing gas is discharged from the upper part. Recovery and recovery from the bottom of the adsorption tower is 120
N 2 gas heated to 5 ° C. at 5 Nl / min for 30 min
The ethanol adsorbed on the coconut shell activated carbon was evaporated and liquefied and recovered by a solvent gas condenser (convoluted water cooling system).
【００２７】 測定結果 原ガス風量 ３１５ Ｎｌ／ｍｉｎ 原ガス温度 １５ ℃ 原ガスＥｔ０Ｈ濃度 ２０００ ｐｐｍ 処理ガスＥｔ０Ｈ濃度 ２５ ｐｐｍ Ｅｔ０Ｈ負荷 ７７．６ ｇ／Ｈ Ｅｔ０Ｈ回収量 ７１．４ ｇ／Ｈ Ｅｔ０Ｈ回収効率 ９２．０１ ％ 回収Ｅｔ０Ｈ濃度 ５８．２ ％ 運転時湿度 ３８ ％ 不純物混入 ％ ５ ｐｐｍ （活性炭中のＣｌ）Measurement Result Raw Gas Air Flow 315 Nl / min Raw Gas Temperature 15 ° C. Raw Gas Et0H Concentration 2000 ppm Processing Gas Et0H Concentration 25 ppm Et0H Load 77.6 g / H Et0H Recovery 71.4 g / H Et0H Recovery Efficiency 92 0.01% Recovered Et0H concentration 58.2% Operating humidity 38% Impurity contamination% 5 ppm (Cl in activated carbon)
【００２８】[0028]
【発明の効果】本発明によれば、従来法の流動パラフィ
ン、ナフテン系重質油、ポリエーテル変性シリコン等で
不可能とされた親水性溶剤ガス及び非親水性溶剤ガスを
個々に、又は同時に希釈することなく高濃度で且つ高品
質に回収可能な溶剤ガス吸収液を提供することができ
る。According to the present invention, the hydrophilic solvent gas and the non-hydrophilic solvent gas made impossible by conventional methods such as liquid paraffin, naphthenic heavy oil, and polyether-modified silicon can be used individually or simultaneously. It is possible to provide a solvent gas absorbing liquid that can be recovered at a high concentration and high quality without dilution.
【００２９】そして、溶剤ガス濃度が数ｐｐｍから数万
ｐｐｍまで吸収可能であること、親水性溶剤、非親水性
溶剤ガスを個々に、又は混合状態でも同時に吸収、回収
できること、又従来法の吸収液回収での問題点であった
回収溶剤への吸収液成分の混入が完全に防止でき、高濃
度且つ高品質な溶剤の回収が可能となり、ファインケミ
カルの分野にも活用できるという優れた特長を有する。The solvent gas concentration can be absorbed from several ppm to tens of thousands ppm, and the hydrophilic solvent and the non-hydrophilic solvent gas can be absorbed and recovered individually or simultaneously in a mixed state. It has an excellent feature that it can completely prevent the absorption solvent component from being mixed into the recovered solvent, which has been a problem in liquid recovery, and enables high-concentration and high-quality solvent recovery, and can be used in the field of fine chemicals. .
【図１】溶剤ガス吸収・回収装置のフローシートであ
る。FIG. 1 is a flow sheet of a solvent gas absorption / recovery device.
１ 一次吸収塔 ２ 二次仕上吸収塔 ３ 排出ファン ４ 一次吸収液貯槽 ５ 二次吸収液貯槽 ６ 一次吸収液シャワーポンプ ７ 二次吸収液シャワーポンプ ８ 一次吸収液戻しポンプ ９ 吸収液再生ポンプ １０ 再生用吸収液加熱器 １１ 蒸発缶 １２ 蒸発ガス用バッフルタンク １３ 減圧用真空ポンプ １４ 蒸発ガス用クッションタンク １５ 溶剤ガス凝縮器 １６ 溶剤回収タンク １７ キャリーガス用Ｎ2 ボンベ １８ 再生済吸収液戻しポンプ １９ 再生済吸収液冷却器DESCRIPTION OF SYMBOLS 1 Primary absorption tower 2 Secondary finish absorption tower 3 Discharge fan 4 Primary absorption liquid storage tank 5 Secondary absorption liquid storage tank 6 Primary absorption liquid shower pump 7 Secondary absorption liquid shower pump 8 Primary absorption liquid return pump 9 Absorption liquid regeneration pump 10 Regeneration pump 19 returns use reboiler 11 evaporator 12 evaporates the gas baffle tank 13 pressure-reducing vacuum pump 14 vaporized gas cushion tank 15 solvent gas condenser 16 the solvent recovery tank 17 carry gas N 2 gas cylinder 18 reproduction completion absorbing solution regeneration Absorbed liquid cooler
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−256413（ＪＰ，Ａ) 特開 平６−315613（ＪＰ，Ａ) 特開 昭52−111469（ＪＰ，Ａ) 特開 昭51−63384（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 53/44 B01D 53/14 B01D 53/77 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-256413 (JP, A) JP-A-6-315613 (JP, A) JP-A-52-111469 (JP, A) JP-A-51- 63384 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B01D 53/44 B01D 53/14 B01D 53/77
Claims (5)
テルに流動パラフィン、及び酸化防止剤から成ることを
特徴とする溶剤ガス吸収液組成物。1. A solvent gas absorbing liquid composition comprising a higher fatty acid ester, a higher fatty acid diester, a liquid paraffin, and an antioxidant.
グリコレートに流動パラフィン及び酸化防止剤から成る
ことを特徴とする溶剤ガス吸収液組成物。2. A solvent gas absorbing liquid composition comprising higher fatty acid glyceride, higher alcohol glycolate, liquid paraffin and an antioxidant.
有する微粉末を請求項１又は請求項２の溶剤ガス吸収液
組成物に加えたことを特徴とするスラリー状溶剤ガス吸
収液組成物。3. A slurry-type solvent gas absorbing liquid characterized by adding fine powder of woody activated carbon having pores of 0.1 to 50 ° to the solvent gas absorbing liquid composition according to claim 1 or 2. Composition.
載の溶剤ガス吸収液組成物を用いた溶剤ガスの回収方
法。4. A method for recovering a solvent gas using the solvent gas absorbing liquid composition according to any one of claims 1 to 3.
求項４に記載の溶剤ガスの回収方法。5. The method for recovering a solvent gas according to claim 4, wherein the solvent gas is a solvent having a polar group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5343322A JP3008064B2 (en) | 1993-12-17 | 1993-12-17 | Solvent gas absorbing liquid composition and method for recovering solvent gas using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5343322A JP3008064B2 (en) | 1993-12-17 | 1993-12-17 | Solvent gas absorbing liquid composition and method for recovering solvent gas using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07171335A JPH07171335A (en) | 1995-07-11 |
| JP3008064B2 true JP3008064B2 (en) | 2000-02-14 |
Family
ID=18360632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5343322A Expired - Fee Related JP3008064B2 (en) | 1993-12-17 | 1993-12-17 | Solvent gas absorbing liquid composition and method for recovering solvent gas using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3008064B2 (en) |
-
1993
- 1993-12-17 JP JP5343322A patent/JP3008064B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07171335A (en) | 1995-07-11 |
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