JPH0240216A - Composition for absorbing gaseous fluorohydrocarbon compound - Google Patents
Composition for absorbing gaseous fluorohydrocarbon compoundInfo
- Publication number
- JPH0240216A JPH0240216A JP63188196A JP18819688A JPH0240216A JP H0240216 A JPH0240216 A JP H0240216A JP 63188196 A JP63188196 A JP 63188196A JP 18819688 A JP18819688 A JP 18819688A JP H0240216 A JPH0240216 A JP H0240216A
- Authority
- JP
- Japan
- Prior art keywords
- absorbent
- polyethylene glycol
- freon
- composition
- fluorohydrocarbon
- 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
- 239000000203 mixture Substances 0.000 title claims description 24
- 150000001875 compounds Chemical class 0.000 title abstract description 9
- 239000002250 absorbent Substances 0.000 claims abstract description 30
- 230000002745 absorbent Effects 0.000 claims abstract description 30
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 22
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 22
- 150000001983 dialkylethers Chemical class 0.000 claims abstract description 10
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- 239000008246 gaseous mixture Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 6
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 23
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical class FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 10
- -1 fluorocarbon compounds Chemical class 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- GDXHBFHOEYVPED-UHFFFAOYSA-N 1-(2-butoxyethoxy)butane Chemical compound CCCCOCCOCCCC GDXHBFHOEYVPED-UHFFFAOYSA-N 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 4
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XOBKSJJDNFUZPF-UHFFFAOYSA-N Methoxyethane Chemical compound CCOC XOBKSJJDNFUZPF-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229940050176 methyl chloride Drugs 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 2
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 1
- VFWCMGCRMGJXDK-UHFFFAOYSA-N 1-chlorobutane Chemical compound CCCCCl VFWCMGCRMGJXDK-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001348 alkyl chlorides Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガス状混合物から、例えばトリクロロトリフ
ルオロエタン（以下フロン−１１３とする）のようなフ
ッ化炭化水素系化合物（以下フロン系化合物と呼ぶ）を
吸収除去し、あるいは、更に、それを回収利用するプロ
セスの吸収剤として有効なポリエチレングリコールジア
ルキルエーテル組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to the production of fluorocarbon compounds (hereinafter referred to as fluorocarbon compounds) such as trichlorotrifluoroethane (hereinafter referred to as Freon-113) from a gaseous mixture. The present invention relates to a polyethylene glycol dialkyl ether composition that is effective as an absorbent in a process for absorbing and removing or even recovering and utilizing the same.
更に詳しく言えば、本発明は低温領域（又は／及び加圧
領域）においてガス状混合物と接触してフロン系化合物
を吸収し、ガス状混合物からフロン系化合物を除去し１
次に高温領域（又は／及び低圧領域）において、−旦吸
収したフロン系化合物を放散させ、更には、それを回収
するプロセスの吸収剤として有効なポリエチレングリコ
ールジアルキルエーテルに関する。More specifically, the present invention absorbs fluorocarbon compounds by contacting a gaseous mixture in a low temperature region (or/and a pressurized region), and removes the fluorocarbon compounds from the gaseous mixture.
Next, the present invention relates to a polyethylene glycol dialkyl ether that is effective as an absorbent in a process of dissipating and recovering the previously absorbed fluorocarbon compound in a high temperature region (or/and low pressure region).
最近、フロン系化合物による成層圏でのオゾン破壊が心
配され、それらの化合物の大気中への放出は、地球規模
での環境汚染につながるとして、国際的に、その対策が
迫られておりその為、工業的に大量に使用されている例
えばフロン−１１３をガス状混合物から、吸収除去し、
更には、それを回収、利用することにより大気中への放
出を防ぐ手段は、大気汚染防止の観点から有効な手段の
一つであると考えられている。Recently, there has been concern about ozone depletion in the stratosphere due to fluorocarbon compounds, and as the release of these compounds into the atmosphere leads to global environmental pollution, there is an international push to take countermeasures. For example, Freon-113, which is used in large quantities industrially, is absorbed and removed from the gaseous mixture,
Furthermore, means to prevent release into the atmosphere by recovering and using it is considered to be one of the effective means from the viewpoint of preventing air pollution.
本発明の目的の一つは、ガス状混合物からフロン系化合
物を吸収除去するに有効な吸収剤を提供することにある
。One of the objects of the present invention is to provide an absorbent that is effective in absorbing and removing fluorocarbon compounds from gaseous mixtures.
更に別の目的の一つは１回収されるフロン系化合物の純
度が高く、再利用するに適しており、しかも経済的に優
れた回収プロセスを提供することにある。Another objective is to provide an economically superior recovery process in which the recovered fluorocarbon compounds have a high purity, are suitable for reuse, and are economically superior.
従来、ガス状混合物の中からフロン系化合物、例えばフ
ロン−１１３を除去しあるいは更にそれを回収するため
に一般的に提案されている方法として次のようなものが
ある。Conventionally, the following methods have been generally proposed for removing or recovering fluorocarbon compounds, such as fluorocarbon-113, from gaseous mixtures.
■：ガス状混合物を直接的に、−２０〜−１５℃に冷却
し、フロン系化合物を凝縮させて分離除去し更には回収
する方法。(2): A method in which the gaseous mixture is directly cooled to -20 to -15°C, and the fluorocarbon compound is condensed, separated and removed, and further recovered.
■：絋抽油系オイル吸収させ、分離除去し更には回収す
る方法。■: A method of absorbing oil extraction oil, separating it, removing it, and recovering it.
■：：性炭あるいは活性炭繊維に吸収させ分離除去し、
更には回収する方法。■:: Separate and remove by absorbing into active carbon or activated carbon fibers,
Furthermore, how to collect it.
しかしながら、これら従来の各方法はそれぞれ特徴を持
っているにもかかわらず、実用面を含めた総合的見地か
らは幾つかの改良すべき点を含んでいる。However, although each of these conventional methods has its own characteristics, there are several points that should be improved from a comprehensive standpoint including practical aspects.
特に、次の２点の改良が強く要望されている。In particular, improvements in the following two points are strongly desired.
■：ガス状物質の冷却の困難性と吸収剤の吸収能力の不
足が起因し、除去（回収）装置が大掛りとなり、経済的
負担が大きいと同時に設置場所さえも限定される。■: Due to the difficulty in cooling gaseous substances and the lack of absorption capacity of the absorbent, the removal (recovery) equipment becomes large-scale, which imposes a heavy economic burden and also limits the installation location.
■：回収されたフロン系化合物の純度を再利用に適した
純度にするために精製装置を必要とし、装置が大掛りと
なると同時に取り扱いが煩雑となり。■: Refining equipment is required to bring the recovered fluorocarbon compounds to a purity suitable for reuse, making the equipment large-scale and complicated to handle.
運転経費が増大する。Operating costs increase.
一方、本発明に係わる吸収剤組成物は、吸収剤組成物の
単位量当りのフロン化合物、例えばフロン−１１３の吸
収能力が大きく吸収速度が非常に速い、従って、除去（
回収）装置はコンパクトなものとなり、更に処理ガスの
冷却や加熱を必要としないため装置費用や運転費用等の
経済的負担は少ない。又、本発明に係わる吸収剤組成物
は液体であるためフロン系化合物の除去回収を一連のプ
ロセスで連続的に操作運転することが可能である。On the other hand, the absorbent composition according to the present invention has a large ability to absorb fluorocarbon compounds, such as fluorocarbon-113, per unit amount of the absorbent composition, and has a very fast absorption rate.
The recovery) device is compact and does not require cooling or heating of the processed gas, so the economic burden such as device cost and operating cost is small. Furthermore, since the absorbent composition according to the present invention is a liquid, it is possible to continuously operate the removal and recovery of fluorocarbon compounds in a series of processes.
更に又、本発明に係わる吸収剤組成物は液体であるが、
蒸気圧が非常に小さいため回収されるフロン系化合物へ
の混入が殆んど無視出来る。Furthermore, although the absorbent composition according to the present invention is a liquid,
Since the vapor pressure is very low, contamination with the recovered fluorocarbon compounds can be almost ignored.
従って、フロン系化合物を精製装置を使わずに再利用す
るに充分な純度のものを得ることが可能である。Therefore, it is possible to obtain a fluorocarbon compound of sufficient purity for reuse without using a purification device.
このように本発明に係る吸収剤組成物は、従来技術のも
つ問題点を著しく軽減し、又ある場合には完全に解消す
るものである。The absorbent composition according to the invention thus significantly reduces, and in some cases completely eliminates, the problems of the prior art.
本発明に係わる吸収剤組成物は１次の一般式で表わされ
るポリエチレングリコールジアルキルエーテルを主成分
とするものである。The absorbent composition according to the present invention has a polyethylene glycol dialkyl ether represented by the following general formula as a main component.
Ｒ，Ｏ（Ｃ，Ｈ，０）ｎＲ。R,O(C,H,0)nR.
［式中Ｒ１、Ｒ２は炭素数１〜４のアルキル基、ｎは２
〜２０の整数をそれぞれ示す、］
本発明の吸収剤組成物はフロン系化合物を含むガス状混
合物からフロン系化合物を低温領域（又はｌ及び加圧領
域）において吸収除去し、次に高温領域（又は！及び低
圧領域）において放出することが出来る。[In the formula, R1 and R2 are alkyl groups having 1 to 4 carbon atoms, and n is 2
] The absorbent composition of the present invention absorbs and removes fluorocarbon-based compounds from a gaseous mixture containing fluorocarbon-based compounds in a low-temperature region (or l and pressure region), and then absorbs and removes fluorocarbon-based compounds in a high-temperature region ( or ! and low pressure region).
本発明に係わるポリエチレングリコールジアルキルエー
テル（以下、ジアルキルエーテルと呼ぶ）は対応するポ
リエチレングリコールモノアルキルエーテル（以下、モ
ノアルキルエーテルと呼ぶ）を原料とする０例えばモノ
アルキルエーテルと苛性ソーダ（又は苛性カリ）とを反
応させ、生成したアルコラードにアルキルクロライドを
反応させる。The polyethylene glycol dialkyl ether (hereinafter referred to as dialkyl ether) according to the present invention is made from the corresponding polyethylene glycol monoalkyl ether (hereinafter referred to as monoalkyl ether), for example, a monoalkyl ether and caustic soda (or caustic potash). The resulting alcoholade is reacted with an alkyl chloride.
尚、原料であるモノアルキルエーテルはアルコール類と
エチレンオキサイドを反応させて製造することができる
。In addition, the monoalkyl ether which is a raw material can be manufactured by reacting alcohol and ethylene oxide.
〔作 用〕
このようにして得られたジアルキルエーテルを主成分と
する本発明に係わる吸収剤組成物は、フロン系化合物の
溶解性が特に優れるだけでなく、安全性にも優れ、又耐
熱性も高く更には蒸気圧が低いのでフロン系化合物への
混入が殆んどない、従って回収されたフロン系化合物を
再利用するに適している等のガス状フロン系化合物の吸
収剤組成物として優れた性能を具備した化合物である。[Function] The absorbent composition according to the present invention containing dialkyl ether as a main component obtained in this manner not only has particularly excellent solubility of fluorocarbon compounds, but also has excellent safety and heat resistance. It is excellent as an absorbent composition for gaseous fluorocarbon compounds, as it has a high vapor pressure and a low vapor pressure, so there is almost no contamination with fluorocarbon compounds, making it suitable for reusing recovered fluorocarbon compounds. It is a compound with excellent performance.
例えばポリエチレングリコールジメチルエーテル［ＣＨ
，Ｏ（Ｃ，Ｈ４０）ｎＣＨｓ］は、ジアルキルエーテル
中量も蒸気圧が高いものであるが、その蒸気圧は以下に
示すように液状物質であるが低い蒸気圧をもつ物質であ
ることが理解されよう。For example, polyethylene glycol dimethyl ether [CH
, O(C,H40)nCHs] has a high vapor pressure even in the dialkyl ether content, but it is understood that although it is a liquid substance, it has a low vapor pressure as shown below. It will be.
ＣＨ，Ｏ（Ｃ，Ｈ４０）、ＣＨ，： ２．５Ｘ １０−
’（ｍ０８ｇ、 ２０℃）ＣＨ，Ｏ（Ｃ，Ｈ４０）、Ｃ
Ｈ，・３．Ｉ Ｘ １０−’（）ＣＨ，○（Ｃ，Ｈ，Ｏ
）、ＣＨ，・３．０Ｘ１０−’（）ＣＨ，○（Ｃ：、Ｈ
，Ｏ）、ＣＨ，： ３．８Ｘ１０−’（）尚、ｎ≧６の
場合は、更にその蒸気圧が低くなることは容易に理解さ
れよう。CH,O(C,H40),CH,: 2.5X 10-
'(m08g, 20℃) CH, O(C, H40), C
H,・3. I X 10-'()CH,○(C,H,O
), CH,・3.0X10-'()CH,○(C:,H
,O), CH,: 3.8X10-'() It is easily understood that when n≧6, the vapor pressure becomes even lower.
又、本発明に係わる吸収剤組成物は、ガス状フロン系化
合物の吸収剤として多様なプロセス条件に適用すること
が出来る。Further, the absorbent composition according to the present invention can be applied to various process conditions as an absorbent for gaseous fluorocarbon compounds.
例えば、フロン−１１３を電子部品の洗浄剤として使っ
た時に発生するガス状混合物からフロン＝１１３を除去
し、更にはこれを回収して利用する為の実施方法は、例
えば「第１図：フロン系化合物の除去回収プロセス」に
おいて１次のようなステップを経て実施される。For example, an implementation method for removing Freon-113 from the gaseous mixture generated when Freon-113 is used as a cleaning agent for electronic parts, and further recovering and utilizing it, is shown in "Figure 1: Freon-113". The process of removing and recovering system compounds is carried out through the following steps.
■：吸収槽において、常圧又は加圧下に本発明に係わる
吸収剤とフロン−１１３を含んだガス状混合物とを接触
させ、フロン−１１３を吸収剤に吸収させ、ガス状混合
物からフロン−１１３を除去する。■: In an absorption tank, the absorbent according to the present invention is brought into contact with a gaseous mixture containing Freon-113 under normal pressure or pressurization, and Freon-113 is absorbed by the absorbent, and Freon-113 is removed from the gaseous mixture. remove.
吸収剤へのフロン−１１３の吸収は、所謂物理吸収であ
るから吸収槽内の吸収剤温度は低い方が好ましく、例え
ば１０℃以下の温度に保たれる、更にガス圧は高い方が
好ましく、例えば１Ｋｇ／ｃｍ”０以上の加圧に保たれ
る。又吸収剤とガス状混合物との接触効率を高めるため
、吸収槽内は棚段式、充填式、あるいはフィルムエバポ
レータ式等の各方法があるが、接触効率を高めるための
方法であれば特に限定されない。Since the absorption of Freon-113 into the absorbent is so-called physical absorption, the temperature of the absorbent in the absorption tank is preferably kept low, for example, at a temperature of 10°C or less, and the gas pressure is preferably high. For example, the pressure is maintained at 1 kg/cm"0 or more. In order to increase the contact efficiency between the absorbent and the gaseous mixture, various methods such as a tray type, a filling type, or a film evaporator type are used in the absorption tank. However, the method is not particularly limited as long as it is a method for increasing contact efficiency.
■：フロンー１１３を含んだ吸収剤は、吸収槽を出て加
熱器に送られ、ここで加熱された後、蒸発槽に送られる
。ここで吸収剤に溶解しているフロン−１１３は放出さ
れる。尚、フロン−１１３の放出を促進するため蒸発槽
の底部よりＮ、ガスあるいは空気などの不活性なガスを
吹き込むことも可能である。又、吸収剤からフロン−１
１３を放出させるには温度は高温がよく、好ましくは６
０℃以上の温度が利用され、更に好ましくは圧力も可能
な範囲で低くする。(2): The absorbent containing Freon-113 leaves the absorption tank and is sent to the heater, where it is heated and then sent to the evaporation tank. At this point, Freon-113 dissolved in the absorbent is released. Incidentally, in order to promote the release of Freon-113, it is also possible to blow inert gas such as N, gas, or air from the bottom of the evaporation tank. In addition, Freon-1 from the absorbent
In order to release 13, the temperature is preferably high, preferably 6
Temperatures above 0° C. are used, and preferably pressures are also as low as possible.
■：蒸発槽で放出されたフロン−１１３は蒸発槽上部よ
りコンデンサーに送られ、冷却されて凝縮する。液化し
た純度の高いフロン−１１３はフロン貯槽に送られ、再
び洗浄剤として利用されることができる。(2): Freon-113 released from the evaporation tank is sent to the condenser from the top of the evaporation tank, where it is cooled and condensed. The liquefied Freon-113 with high purity is sent to the Freon storage tank and can be used again as a cleaning agent.
■・一方、フロン−１１３を放出して再生された吸収剤
は蒸発槽の下部より冷却器に送られ、好ましくは１０℃
以下の温度まで冷却された後吸収槽の上部へ送られ、再
びフロン−１１３を含むガス状混合物と接触しフロン−
１１３を吸収する。■・On the other hand, the absorbent regenerated by releasing Freon-113 is sent to the cooler from the bottom of the evaporation tank, preferably at 10°C.
After being cooled to the following temperature, it is sent to the upper part of the absorption tank, where it comes into contact again with a gaseous mixture containing Freon-113, and is then cooled to the temperature below.
Absorbs 113.
尚、フロン−１１３を除去したガス状物質は吸収槽上部
より大気中に放出することが出来る。Note that the gaseous substance from which Freon-113 has been removed can be released into the atmosphere from the upper part of the absorption tank.
本発明を以下の実施例により更に詳細に説明するが、本
発明はこれらの実施例に限定されるものではない６
ヌ！ｍ１
１．５Ωスケールのステンレス製のオートクレーブにメ
タノールと苛性ソーダ（触媒）を仕込んだ後、Ｎ、ガス
で容器内空気を置換した。その後、１１０−１２０℃に
加熱し、これにエチレンオキサイドを添加し、約３時間
の反応で、ポリエチレングリコールモノメチルエーテル
［ＣＨ，Ｏ（Ｃ，Ｈ４０）ｎＨ］を合成した。The present invention will be explained in more detail with reference to the following examples, but the present invention is not limited to these examples. m1 After methanol and caustic soda (catalyst) were charged into a 1.5Ω scale stainless steel autoclave, the air in the container was replaced with N and gas. Thereafter, the mixture was heated to 110-120°C, ethylene oxide was added thereto, and polyethylene glycol monomethyl ether [CH,O(C,H40)nH] was synthesized through a reaction for about 3 hours.
引き続き、苛性カリとメチルクロライドを加えて反応さ
せ、主として、ポリエチレングリコールジメチルエーテ
ル分と塩化ナトリウムを生成した。Subsequently, caustic potash and methyl chloride were added and reacted to produce mainly polyethylene glycol dimethyl ether and sodium chloride.
塩化ナトリウムの結晶は、加圧式濾過器を用いてポリエ
チレングリコールメチルエーテルから分離した。濾液を
トッピング装置に移し、減圧処理して若干含まれる水分
、メタノール等の副生物を除去した、本発明に係わるポ
リエチレングリコールジメチルエーテル［ＣＨ，０（Ｃ
，Ｈ４０）ｎＣＨ，コを主成分とする組成物を得た。こ
の組成物の性状は以下の通りであった。Sodium chloride crystals were separated from polyethylene glycol methyl ether using a pressure filter. The filtrate was transferred to a topping device and treated under reduced pressure to remove slightly contained water and by-products such as methanol.
, H40) nCH, was obtained. The properties of this composition were as follows.
・平均分子量 ： ２６０・凝固点（℃）
： −３７・引火点（℃、Ｃ０Ｃ）
： １４３・粘 度（ｃＳｔ、２０℃）：４
．７
・沸 点（’Ｃ） ： ２１５・蒸気
圧（ｍｍＨｇ、 ２０℃） ： １．０Ｘ１０
−”実施例１と同様の装置を用いて合成した。即ち、ブ
タノールと苛性ソーダ（接触）を仕込んだ後、Ｎ１ガス
で容器内の空気を置換した。その後、１１０〜１２０℃
に加熱し、これにエチレンオキサイドを添加し、約４時
間反応させてポリエチレングリコールモノブチルエーテ
ル［Ｃ４Ｈ，０（Ｃ，Ｈ４０）ｎＨ］を合成した。引き
続き苛性ソーダとブチルクロライドを加えて反応させ、
主としてポリエチレングリコールジブチルエーテル分と
塩化ナトリウムとを生成した。塩化ナトリウムの結晶は
、加圧式濾過機を用いてポリエチレングリコールジブチ
ルエーテル分から分離した。得られたポリエチレングリ
コールジブチルエーテル分は、トッピング装置に移し、
減圧下約１５０℃で処理して、若干台まれる水、ブタノ
ール、等の副生物を除去する二とにより本発明に係わる
ポリエチレングリコールジブチルエーテル［Ｃ４Ｈ，０
（ＣａＨ４０）ｎｃ４Ｈ１］を主成分とする組成物を得
た。・Average molecular weight: 260 ・Freezing point (℃)
: -37・Flash point (℃, C0C)
: 143・Viscosity (cSt, 20℃): 4
．． 7 ・Boiling point ('C): 215 ・Vapor pressure (mmHg, 20℃): 1.0X10
-"Synthesized using the same equipment as in Example 1. That is, after charging butanol and caustic soda (contact), the air in the container was replaced with N1 gas.
Ethylene oxide was added thereto and reacted for about 4 hours to synthesize polyethylene glycol monobutyl ether [C4H,0(C,H40)nH]. Continue to add caustic soda and butyl chloride to react,
Mainly polyethylene glycol dibutyl ether and sodium chloride were produced. Sodium chloride crystals were separated from polyethylene glycol dibutyl ether using a pressure filter. The obtained polyethylene glycol dibutyl ether is transferred to a topping device,
The polyethylene glycol dibutyl ether [C4H,0
(CaH40)nc4H1] was obtained.
この組成物の性状は以下の通りであった。The properties of this composition were as follows.
・平均分子量 ＝ ３５５・凝固点（’Ｃ
） ： −２８・引火点（℃、Ｃ０Ｃ
） ： １８５・粘 度（ｃｓｔ、２０℃）：
５．６
・沸 点（’Ｃ） ： ３１０・蒸気
圧（ｍｍＨｇ、 ２０℃） ： １．１Ｘ１０
−”実施例３
ポリエチレングリコールメチル・エチルエーテルの調整
実施例１、及び２と同様の装置により合成した。・Average molecular weight = 355 ・Freezing point ('C
): -28・Flash point (℃, C0C
): 185・Viscosity (cst, 20℃):
5.6 ・Boiling point ('C): 310 ・Vapor pressure (mmHg, 20℃): 1.1X10
-"Example 3 Preparation of polyethylene glycol methyl ethyl ether Synthesized using the same equipment as in Examples 1 and 2.
即ち、エタノールと苛性ソーダ（触媒）を仕込んだ後、
Ｎ８ガスで容器内の空気を置換した。That is, after charging ethanol and caustic soda (catalyst),
The air in the container was replaced with N8 gas.
その後、１１０〜１２０℃に加熱し、これにエチレンオ
キサイドを添加し、約３．５時間の反応で、ポリエチレ
ングリコールモノエチルエーテル［ＣＨ，Ｏ（Ｃ，Ｈ，
０）ｎＨ］を合成した。引続キ苛性ソーダとメチルクロ
ライドとを反応させ主としてポリエチレングリコールメ
チル・エチルエーテル分と塩化ナトリウムとを生成した
。以下、実施例１及び２と同様にして、本発明に係わる
ポリエチレングリコールメチル・エチルエーテル［Ｃ，
Ｈ，（Ｃ，Ｈ，○）ＯＨ，］を主成分とする組成物を得
た。Thereafter, it was heated to 110-120°C, ethylene oxide was added thereto, and the reaction was carried out for about 3.5 hours to form polyethylene glycol monoethyl ether [CH,O(C,H,
0)nH] was synthesized. Subsequently, caustic soda and methyl chloride were reacted to produce mainly polyethylene glycol methyl ethyl ether and sodium chloride. Hereinafter, in the same manner as in Examples 1 and 2, polyethylene glycol methyl ethyl ether [C,
A composition containing H, (C, H, ○)OH, ] as main components was obtained.
得られた組成物の性状は以下の通りであった。The properties of the obtained composition were as follows.
・平均分子量 ： ２８０・凝固点（’Ｃ
） ： −３３・引火点（’Ｃ，Ｃ０
Ｃ） ： １５３・粘 度（ｃｓｔ、２０℃）
：４．９
・沸 点（’Ｃ） ： ２４３・蒸気
圧（Ｉｄｇ、２０℃） ： ７．０ＸＩＯ−”り
づ匹
実施例１と全く同様の方法で合成し、得られたポリエチ
レングリコールジメチルエーテル９４０ｇを、実験用蒸
留塔（１０段相当）で蒸留分別し、次の各成分（３区分
）を得た。・Average molecular weight: 280 ・Freezing point ('C
): -33・Flash point ('C, C0
C): 153・Viscosity (cst, 20℃)
: 4.9 ・Boiling point ('C): 243 ・Vapor pressure (Idg, 20℃): 7.0XIO-'' 940 g of polyethylene glycol dimethyl ether synthesized in exactly the same manner as in Example 1 was distilled and fractionated using an experimental distillation column (equivalent to 10 plates) to obtain the following components (three categories).
（各成分）
成分−１（主成分ニジエチレングリコールジメチルエー
テル） ：約２５（ｇ）成分−２（主成分ニトリエチ
レングリコールジメチルエーテル） ：約２００（ｇ）
成分−３（主成分：テトラエチレングリコールジメチル
エーテル）：約２５０（ｇ）これら各成分の性状は以下
の通りであった。(Ingredients) Component-1 (Main component nitriethylene glycol dimethyl ether): Approx. 25 (g) Component-2 (Main component nitriethylene glycol dimethyl ether): Approx. 200 (g)
Component-3 (main component: tetraethylene glycol dimethyl ether): about 250 (g) The properties of each of these components were as follows.
実施例１〜４で調整した各組成物に対するフロン−１１
３の溶解度の測定結果を第１表に示した。Freon-11 for each composition prepared in Examples 1 to 4
Table 1 shows the measurement results of solubility of No. 3.
比較例として鉱油の例を示した。An example of mineral oil is shown as a comparative example.
尚、溶解度は各組成物又は比較例の鉱油の１００ｇに溶
解したフロン−１１３のグラム数で示した。The solubility is expressed as the number of grams of Freon-113 dissolved in 100 g of mineral oil of each composition or comparative example.
測定温度は６０’Ｃであった。The measurement temperature was 60'C.
第１表：フロン−１１３の溶解度 （ｇ ７１００ｇ）
プロセス例）は１本発明の吸収剤組成物を使った場合の
ガス状混合物からガス状フロンを除去回収するプロセス
例のフローダイアグラムを示す。Table 1: Solubility of Freon-113 (g 7100g)
Process Example 1 shows a flow diagram of a process example for removing and recovering gaseous fluorocarbons from a gaseous mixture using the absorbent composition of the present invention.
特許出願人 東邦化学工業株式会社
〔発明の効果〕
以上に示した実施例、参考例の結果から明瞭なように、
本発明に係わる組成物は、フロン系化合物に対する溶解
度が非常に優れていることが分る。Patent applicant: Toho Chemical Industry Co., Ltd. [Effects of the invention] As is clear from the results of the examples and reference examples shown above,
It can be seen that the composition according to the present invention has very good solubility in fluorocarbon compounds.
又、各組成物の蒸気圧から、回収されるフロン−１１３
への混入が非常に少ないことが分る。In addition, Freon-113 recovered from the vapor pressure of each composition
It can be seen that there is very little contamination.
例えば、蒸気圧が一番高い成分−１（実施例４）でさえ
も、フロン−１１３への混入は０．１％以下であること
が理解される。For example, it is understood that even component-1 (Example 4), which has the highest vapor pressure, is mixed into Freon-113 at 0.1% or less.
添付の図面（第１図：フロン系化合物の除去回収図面の
浄書
第−Ｉ２Ｉ：フロン系化合物の除去回頃プロセス手続補
正書働式）
％式％
１、事件の表示
昭和６３年特許願第 １８８１９６号
２、発明の名称
ガス状フッ化炭化水素系化合物用吸収剤組成物３、補正
をする者
事件との関係 特許出願人
代表者 遠 藤 和
４、補正命令の日付（発進口）
昭和６３年１０月２５日
４、補正の対象
「明細書」中の １図面
」
手続補正書（自船
昭和６３年１１月１８
特許庁長官 吉 １）文 毅 殿
１、事件の表示
昭和６３年特許願第 １８８１９６号
２、発明の名称
３、補正をする者
事件との関係Attached drawings (Figure 1: Engraving of drawing for removal and recovery of fluorocarbon compounds No. I2I: Process procedure amendment form for removal of fluorocarbon compounds) % Formula % 1. Indication of the incident 1988 Patent Application No. 188196 No. 2, Name of the invention Absorbent composition for gaseous fluorohydrocarbon compounds 3, Relationship with the case of the person making the amendment Patent applicant representative Kazu Endo 4, Date of amendment order (starting point) 1988 October 25th 4, 1 drawing in the ``specification'' subject to amendment'' Procedural amendment (own ship November 18, 1988 Director General of the Patent Office Yoshi 1) Moon Yi 1, Indication of the case 1988 Patent Application No. 188196 No. 2, Title of the invention 3, Relationship with the person making the amendment case
Claims (1)
、あるいは更にそれを回収利用することを目的とするプ
ロセスで使用される。次の化学式で表わされるポリエチ
レングリコールジアルキルエーテルを主成分とする吸収
剤組成物。 化学式：Ｒ＿１Ｏ（Ｃ＿２Ｈ＿４Ｏ）ｎＲ＿２ （式中Ｒ＿１、Ｒ＿２は炭素数１〜４のアルキル基、ｎ
は２〜２０の整数をそれぞれ示す。）[Claims] It is used in a process aimed at absorbing and removing a fluorinated hydrocarbon compound from a gaseous mixture, or further recovering and utilizing it. An absorbent composition whose main component is polyethylene glycol dialkyl ether represented by the following chemical formula. Chemical formula: R_1O(C_2H_4O)nR_2 (in the formula, R_1 and R_2 are alkyl groups having 1 to 4 carbon atoms, n
represents an integer from 2 to 20, respectively. )
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188196A JPH0240216A (en) | 1988-07-29 | 1988-07-29 | Composition for absorbing gaseous fluorohydrocarbon compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188196A JPH0240216A (en) | 1988-07-29 | 1988-07-29 | Composition for absorbing gaseous fluorohydrocarbon compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0240216A true JPH0240216A (en) | 1990-02-09 |
Family
ID=16219453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63188196A Pending JPH0240216A (en) | 1988-07-29 | 1988-07-29 | Composition for absorbing gaseous fluorohydrocarbon compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240216A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8003832B2 (en) | 2005-07-28 | 2011-08-23 | Showa Denko K.K. | Process for recovering pentafluoroethane, and production method of pentafluoroethane involving the process |
| JP2015112561A (en) * | 2013-12-12 | 2015-06-22 | 学校法人慶應義塾 | Voc removal apparatus, voc removal system, voc removal method and removal liquid for voc removal |
| CN112609334A (en) * | 2020-11-30 | 2021-04-06 | 浙江青昀新材料科技有限公司 | Flash evaporation non-woven fabric and preparation method thereof |
-
1988
- 1988-07-29 JP JP63188196A patent/JPH0240216A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8003832B2 (en) | 2005-07-28 | 2011-08-23 | Showa Denko K.K. | Process for recovering pentafluoroethane, and production method of pentafluoroethane involving the process |
| JP2015112561A (en) * | 2013-12-12 | 2015-06-22 | 学校法人慶應義塾 | Voc removal apparatus, voc removal system, voc removal method and removal liquid for voc removal |
| CN112609334A (en) * | 2020-11-30 | 2021-04-06 | 浙江青昀新材料科技有限公司 | Flash evaporation non-woven fabric and preparation method thereof |
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