JPS62262727A - Method for treating dimethyl sulfide or diethyl sulfide - Google Patents
Method for treating dimethyl sulfide or diethyl sulfideInfo
- Publication number
- JPS62262727A JPS62262727A JP61103202A JP10320286A JPS62262727A JP S62262727 A JPS62262727 A JP S62262727A JP 61103202 A JP61103202 A JP 61103202A JP 10320286 A JP10320286 A JP 10320286A JP S62262727 A JPS62262727 A JP S62262727A
- Authority
- JP
- Japan
- Prior art keywords
- sulfide
- solvent
- aqueous solution
- diethyl
- oxidizing agent
- 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
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 title claims abstract description 59
- LJSQFQKUNVCTIA-UHFFFAOYSA-N diethyl sulfide Chemical compound CCSCC LJSQFQKUNVCTIA-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 28
- 239000002904 solvent Substances 0.000 claims abstract description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 17
- 239000007800 oxidant agent Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract 3
- 238000009835 boiling Methods 0.000 claims description 6
- 150000003568 thioethers Chemical class 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 150000001491 aromatic compounds Chemical group 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000126 substance Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 150000003462 sulfoxides Chemical class 0.000 description 4
- LEVWYRKDKASIDU-IMJSIDKUSA-N L-cystine Chemical compound [O-]C(=O)[C@@H]([NH3+])CSSC[C@H]([NH3+])C([O-])=O LEVWYRKDKASIDU-IMJSIDKUSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229960003067 cystine Drugs 0.000 description 3
- 150000003457 sulfones Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000004158 L-cystine Substances 0.000 description 2
- 235000019393 L-cystine Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 2
- 235000018417 cysteine Nutrition 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- -1 monoarsenic peroxide Chemical class 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241001237745 Salamis Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000015175 salami Nutrition 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Fire-Extinguishing Compositions (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はパルプ製造工場や、化学工場、さらにはし尿処
理場などより排出されるジメチルまたはジエチルスルフ
ィドの処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for treating dimethyl or diethyl sulfide discharged from pulp manufacturing plants, chemical plants, human waste treatment plants, and the like.
ジアルキルスルフィドの中でもジメチルスルフィドやジ
エチルスルフィドは、悪臭防止法により大気中の濃度は
、ジメチルスルフィド０．０１ ｐｐｍ。Among dialkyl sulfides, dimethyl sulfide and diethyl sulfide have a concentration in the atmosphere of 0.01 ppm due to the Odor Prevention Law.
ジエチルスルフィド０．００９ ｐｐｍ以下と規制され
ている悪臭物質でアル。Diethyl sulfide Al is a malodorous substance regulated at 0.009 ppm or less.
しかしながらこれらの悪臭物質は、パルプの製造時の副
生、有機硫黄化合物が関与する化学反応時の副生など産
業上の利用分野で必ず副生を余滴なくされており、比較
的５３点も低いので通常排ガス中に混入され、これらの
物質の効果的かつ効率の良い除害方法が望まれていた。However, these foul-smelling substances have a relatively low score of 53 points because they are always used as by-products in industrial applications such as by-products during pulp manufacturing and by-products during chemical reactions involving organic sulfur compounds. Therefore, there has been a desire for an effective and efficient method for removing these substances, which are usually mixed into exhaust gas.
〔従来の技術及び発明が解決しようとする問題点〕含硫
黄化合物中、たとえば硫化水素、メルカプタン類などの
酸性の悪臭物質は、アルカリ性薬剤に吸収させることに
より比較的易しく除害が可能であるがジアルキルスルフ
ィド類は中性であるために、このような除害方法が適用
できない。[Problems to be solved by the prior art and the invention] Among sulfur-containing compounds, acidic and malodorous substances such as hydrogen sulfide and mercaptans can be relatively easily eliminated by absorbing them into alkaline chemicals. Since dialkyl sulfides are neutral, such abatement methods cannot be applied.
したがって従来、ジアルキルスルフィドの除害方法とし
ては、（１）発生源からの排ガスを直接燃焼炉に導き燃
焼させる直接燃焼法。（２）Ｐ ｔ 、 Ｖ２Ｑ５、Ｚ
ｎＯ−ＭｎＯ２などの酸化触媒を用いて１５０〜３００
℃程度の温度で醇化させる接触酸［ヒ法。Therefore, conventional methods for eliminating dialkyl sulfides include (1) a direct combustion method in which exhaust gas from a source is directly introduced into a combustion furnace and combusted; (2) P t , V2Q5, Z
150-300 using an oxidation catalyst such as nO-MnO2
Contact acid method for liquefying at a temperature of about ℃.
（３）活性炭などに吸着させる吸着法。（４）オゾン、
次亜塩素酸ナトリウム、次亜塩素酸カルシウム、過マン
ガン酸カリウム、過酸１ヒ水素などの水溶液と接触させ
て酸化させる薬液老化法などで実施されている。(3) Adsorption method using activated carbon, etc. (4) Ozone,
This is carried out by a chemical aging method in which oxidation is carried out by contacting with an aqueous solution of sodium hypochlorite, calcium hypochlorite, potassium permanganate, monoarsenic peroxide, or the like.
この中、［１１，＋２１の方法は、燃焼炉などの設備の
設置コスト、運転コストが高い上に、大気中に排出され
るＳＯｉの問題がある。また（３）の方法に（よ処理能
力が小さく、大量の処理を必要とする場合には不向きで
ある。したがって（４）に示す方法が最も効果的と思わ
れるが、この方法を適用した従来より知られている方法
は、塔形式の装置によるスクラバ一方式であり１例えば
１安全工学」（１８巻。Among these methods, the method [11, +21] not only requires high installation costs and operating costs for equipment such as a combustion furnace, but also has the problem of SOi being emitted into the atmosphere. In addition, method (3) has a small processing capacity and is unsuitable when a large amount of processing is required.Therefore, method (4) seems to be the most effective, but conventional methods that apply this method A more well-known method is a one-sided scrubber system using a tower-type device, as described in 1For example, 1. Safety Engineering (Vol. 18).
５号、２７１頁〜）には数ｐｐｍ程度の希薄ジメチルス
ルフィドを次亜塩素酸ナトリウムの水溶液を用いて除去
する方法が記コ戊されている。No. 5, p. 271~) describes a method for removing dimethyl sulfide of several ppm using an aqueous solution of sodium hypochlorite.
しかしながら、このようなスクラバ一方式では比較的高
農産のジアルキルスルフィドを含む排ガスに適用した場
合は処理しきれず、洗滌処理ガス中にはかなりのリーク
がある。However, when such a one-type scrubber is applied to exhaust gas containing dialkyl sulfide, which has a relatively high agricultural yield, it cannot be completely treated, and there is a considerable amount of leakage in the scrubbing gas.
また上記引例のように低濃度の排ガス処理においては処
理時の酸化剤の吏用を理論量よりも大過剰に用いる必要
があるなどの欠点があった。Furthermore, in the treatment of low-concentration exhaust gases as in the above-mentioned example, there is a drawback that it is necessary to use an oxidizing agent in excess of the stoichiometric amount at the time of treatment.
本発明者らは上記の様な問題点を踏まえて鋭意検討の結
果１本発明方法に達したものである。The inventors of the present invention have arrived at the method of the present invention as a result of intensive studies in view of the above-mentioned problems.
すなわち本発明方法は、排ガスなどの発生混入したジメ
チルまたはジエチルスルフィドを、−量水とは混和せず
、かつジアルキルスルフィドを溶解させる溶媒に一定濃
度まで吸収させ、その後、必要量の水を含む酸化剤を添
加し、ジアルキルスルフィドを逐次酸化して酸化物とし
、酸（ヒ物は水雫中へ移行されるので、処理後の水溶液
と溶媒層を分液して水層を分離廃棄することを特徴とす
るジメチルスルフィドまたはジエチルスルフィドの処理
方法である。That is, in the method of the present invention, dimethyl or diethyl sulfide generated in exhaust gas or the like is absorbed to a certain concentration in a solvent that is immiscible with water and dissolves dialkyl sulfide, and then oxidized with a necessary amount of water. The dialkyl sulfide is sequentially oxidized to form an oxide, and the arsenic is transferred into the water droplets, so it is recommended to separate the aqueous solution and solvent layer after treatment and separate and dispose of the aqueous layer. This is a characteristic method for treating dimethyl sulfide or diethyl sulfide.
したがって本発明の処理方法では、溶媒中でこれらのジ
アルキルスルフィドを酸化させ、下式により相応するジ
アルキルスルホキシドまたはジアルキルスルホキシドま
で酸化された酸化物は、逐次系中では水層へ移行し、水
溶液となるので、生成したスルホキシド、またはスルホ
ン水溶液は分液分離して無臭化するものである。Therefore, in the treatment method of the present invention, these dialkyl sulfides are oxidized in a solvent, and the oxides oxidized to the corresponding dialkyl sulfoxide or dialkyl sulfoxide according to the following formula move to the aqueous layer in the sequential system and become an aqueous solution. Therefore, the generated sulfoxide or sulfone aqueous solution is separated and made odorless.
スルホキシド水溶液、スルホン水溶液は無臭でそのまま
廃棄できる。Sulfoxide aqueous solutions and sulfone aqueous solutions are odorless and can be disposed of as they are.
本発明方法において、使用する水と混和せず、かつジア
ルキルスルフィドを溶解させる溶媒としては、これらの
設置を有する溶媒であれば、いずジエチルスルフィドは
比較的沸点も高い（ＢＰ９２°Ｃ）ので、本発明で使用
する溶媒は少くとも１００″Ｃ以上の沸点を有する芳香
族系化合物の溶媒が好ましい。In the method of the present invention, the solvent that is immiscible with the water used and that dissolves the dialkyl sulfide can be any solvent that has these features, since diethyl sulfide has a relatively high boiling point (BP 92°C). The solvent used in the present invention is preferably an aromatic compound solvent having a boiling point of at least 100''C or higher.
これらにはトルエン、キシレン、モノクロルベンゼンな
どが上げられるが、トルエンはジメチルスルフィド、ジ
エチルスルフィドの両者に対し、特に良溶剤であり好ま
しい溶媒の一つである。These include toluene, xylene, monochlorobenzene, etc., and toluene is a particularly good solvent for both dimethyl sulfide and diethyl sulfide and is one of the preferred solvents.
溶媒に対するジアルキルスルフィドの溶解度は任意であ
り、吸収量は限定されないが、うすすぎると効率が悪く
、また濃すぎると処理時に発熱によりジアルキルスルフ
ィドがリークするなどの問題が生じるため、好ましくは
５〜５０重量係までｊ１１ξ中７−寸、トドｙ−ｎ）活
で電ｉ【−１吸収させる温度としては、ジメチルスルフ
ィドの沸点は３８°Ｃ，ジエチルスルフィドの沸点は９
２°Ｃであり、吸収時の蒸発は好ましくないので吸収さ
せるジアルキルスルフィドの沸点以下に保持して実施す
るのがよい。The solubility of dialkyl sulfide in the solvent is arbitrary, and the absorption amount is not limited, but if it is too dilute, the efficiency will be poor, and if it is too concentrated, problems such as leakage of dialkyl sulfide due to heat generation during treatment will occur, so it is preferably 5 to 50. The temperature at which the electron i[-1 is absorbed in the active state is 38°C, and the boiling point of diethyl sulfide is 9°C.
2°C, and since evaporation during absorption is undesirable, it is preferable to maintain the temperature below the boiling point of the dialkyl sulfide to be absorbed.
また本発明方法において、使用する酸化剤は水溶液を形
成するものであればいずれでもよく、通常酸化剤として
知られている次亜塩素酸ナトリウム、次亜塩素酸カルシ
ウム、過酸化水素及び過マンガン酸カリウムが適してい
る。In addition, in the method of the present invention, any oxidizing agent may be used as long as it forms an aqueous solution, and sodium hypochlorite, calcium hypochlorite, hydrogen peroxide, and permanganic acid, which are commonly known as oxidizing agents, may be used. Potassium is suitable.
これらの酸化剤は水溶液で用い、通常、使用する酸化剤
の量としては、有効成分としてのジアルキルスルフィド
に対するモル比が１．０〜１０．０の範囲で選ばれるが
前記したごとく、ＣＯＤの負荷を少くするためにはジア
ルキルスルホンまで酸化させるのが好ましいので、その
場合は５〜１０モル倍の範囲がよい。またその水溶液の
濃度は５〜５０重量係程度が好ましい。These oxidizing agents are used in aqueous solution, and the amount of oxidizing agent used is usually selected within a molar ratio of 1.0 to 10.0 with respect to the dialkyl sulfide as an active ingredient. In order to reduce the amount, it is preferable to oxidize even the dialkyl sulfone, so in that case, the range of 5 to 10 moles is preferable. The concentration of the aqueous solution is preferably about 5 to 50% by weight.
また、吸収させた溶媒と酸化剤水溶液との接触は充分な
撹拌下に行い、温度としては吸収時と同様吸収され６ジ
アルキルスルフイドの沸点以下にるための充分な時間が
必要であり、通常、３０分スルフィドを含有した排ガス
処理においても、一定量の濃度になるまでは短時間かつ
完全な吸収が可能であり、逆に空気との混合などによっ
つすくなっている排ガスを処理する場合も一定量までは
ジアルキルスルフィドのみを吸収し、一定量の吸収量に
達した後は、相応する定量の酸化剤で処理することによ
り目的が達せられる。In addition, contact between the absorbed solvent and the oxidizing agent aqueous solution is carried out with sufficient stirring, and the temperature is the same as during absorption, and sufficient time is required for the temperature to drop below the boiling point of the 6-dialkyl sulfide. Normally, even when treating exhaust gas containing sulfide for 30 minutes, it is possible to completely absorb it in a short period of time until it reaches a certain concentration, and conversely, it is possible to treat exhaust gas that has become less concentrated due to mixing with air, etc. In this case, only the dialkyl sulfide is absorbed up to a certain amount, and after reaching a certain amount, the object is achieved by treating with a corresponding amount of oxidizing agent.
本発明のジアルキルスルフィドの処理方法は。The method for treating dialkyl sulfide of the present invention is as follows.
このように広範囲の濃度を有する排ガスに適用できるが
、例えば発明者らは先にジメチルスルホオキシド（以下
ＤＭＳＯと略す）を使用してシスティンからシスチンを
得る方法を見い出したが、この際下式により副生物とし
てジメチルスルフィドが生じる。As described above, it can be applied to exhaust gas having a wide range of concentrations. For example, the inventors previously discovered a method for obtaining cystine from cysteine using dimethyl sulfoxide (hereinafter abbreviated as DMSO), but in this case, the following formula was used. Dimethyl sulfide is formed as a by-product.
ｍ−−９（−８ＣＨ２ＣＨＣＯＯＨ）２ ＋ ＣＨａＳ
ＣＨａ ＋ Ｈ２０Ｉ！１１（２
本発明は、このような反応のような高濃度のジメチルス
ルフィドを含有した排ガス処理には段重な方法である。m--9(-8CH2CHCOOH)2 + CHaS
CHa+H20I! 11(2) The present invention is a multi-stage method for treating exhaust gas containing a high concentration of dimethyl sulfide, such as in such a reaction.
このように本発明においては、ジメチルスルフィドまた
はジエチルスルフィドを一旦溶媒に吸収させた後、酸化
剤水溶液と接触させ処理することにより以下の利点を有
する。As described above, the present invention has the following advantages by once absorbing dimethyl sulfide or diethyl sulfide in a solvent and then bringing it into contact with an oxidizing agent aqueous solution for treatment.
（１）被処理物中のジアルキルスルフィドの濃度がσよ
非常に高い場合でも、一旦溶媒に却収させて処理するた
め処理時のリークがなく、悪臭を放出しない。また逆に
濃度が希薄であっても、溶媒に吸収させて濃縮するため
、酸化剤の使用量は必要最低量で良い。(1) Even if the concentration of dialkyl sulfide in the material to be treated is much higher than σ, there is no leakage during treatment and no foul odor is emitted because the substance is first collected in a solvent and then treated. On the other hand, even if the concentration is dilute, the amount of oxidizing agent used can be the minimum necessary amount because it is absorbed into the solvent and concentrated.
時における飛散蒸発、処理能力不足によるリークなどが
ない。There is no scattering and evaporation during operation, and there are no leaks due to insufficient processing capacity.
（３）酸化反応が溶媒中で行わｎるため、反応は溶媒側
から逐次供給酸化されていくため酸化反応がｊ和であり
異常な発熱などが防止される。(3) Since the oxidation reaction is carried out in a solvent, the reaction is sequentially supplied and oxidized from the solvent side, so the oxidation reaction is a summation and abnormal heat generation is prevented.
などである〇
以下実施例にて説明するが、溶媒中のジメチルスルフィ
ドの濃度はガスクロマトグラフィーにより分析した。etc. As will be explained in Examples below, the concentration of dimethyl sulfide in the solvent was analyzed by gas chromatography.
実施例
Ｌ−システィン２４．２．９を含む水溶液２００ ｍｌ
にＤＭＳ Ｏ１１，７ｇを添加して、４５°Ｃ８時間に
てＬ−システィンをＬ−シスチンへ酸化させたが。Example L - 200 ml of an aqueous solution containing cysteine 24.2.9
11.7 g of DMS O was added to the solution to oxidize L-cystine to L-cystine at 45°C for 8 hours.
この間反応器より発生するジメチルスルフィドを約８０
％含有した排ガスを、トルエン４０ｐを仕ルエン層中の
ジメチルスルフィドの濃度は１５．６重量％であった。During this time, about 80% of dimethyl sulfide was generated from the reactor.
The concentration of dimethyl sulfide in the toluene layer was 15.6% by weight.
これは発生すべき理論量のジメこのトルエン層に、次亜
塩素酸カルシウム１６５ｇ／ｌ（水）（通称のサラシ液
） １６０ ｍｌ（次亜塩素酸カルシウムがジメチルス
ルフィドに対して約２倍モル）を加えてＩＨｒ室温にて
撹拌し、トルエン層中のジメチルスルフィド濃度をガス
クロマトグラフィーで実測すると２３ ｐｐｍであった
。ついで分液０分離した水層からは臭いはなく、ジメチ
ルスルフィドは全く検出されなかった。This is the theoretical amount of diminutive that should be generated, and 165 g/l (water) of calcium hypochlorite (commonly known as salami liquid) in the toluene layer, and 160 ml (calcium hypochlorite is about twice the mole of dimethyl sulfide). was added and stirred under IH at room temperature, and the dimethyl sulfide concentration in the toluene layer was actually measured by gas chromatography and found to be 23 ppm. The aqueous layer that was then separated had no odor and no dimethyl sulfide was detected.
Claims (5)
スルフィドを溶解する溶媒を用いて、ジメチルスルフィ
ドまたはジエチルスルフィドを溶解吸収せしめた後、水
を含む酸化剤と接触反応させて、これらのジアルキルス
ルフィドを相応の酸化物にして水層に移行せしめ、分液
により分離するジメチルスルフィドまたはジエチルスル
フィドの処理方法。(1) Dimethyl sulfide or diethyl sulfide is dissolved and absorbed using a solvent that is immiscible with water and dissolves dimethyl sulfide or diethyl sulfide, and then contacted with an oxidizing agent containing water to convert these dialkyl sulfides into appropriate amounts. A method for treating dimethyl sulfide or diethyl sulfide, in which the oxide is transferred to the aqueous layer and separated by liquid separation.
である特許請求の範囲第（１）項記載の方法。(2) The method according to claim (1), wherein the solvent is an aromatic compound having a boiling point of 100°C or higher.
（２）項記載の方法。(3) The method according to claim (2), wherein the aromatic compound is toluene.
塩素酸カルシウム、過酸化水素または過マンガン酸カリ
ウムから選択された化合物の水溶液である特許請求の範
囲第（１）項記載の方法。(4) Claim 1, wherein the oxidizing agent containing water is an aqueous solution of a compound selected from sodium hypochlorite, calcium hypochlorite, hydrogen peroxide, or potassium permanganate. Method.
範囲第（１）項記載の方法。(5) The method according to claim (1), wherein the solvent layer after liquid separation is repeatedly reused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103202A JPS62262727A (en) | 1986-05-07 | 1986-05-07 | Method for treating dimethyl sulfide or diethyl sulfide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103202A JPS62262727A (en) | 1986-05-07 | 1986-05-07 | Method for treating dimethyl sulfide or diethyl sulfide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62262727A true JPS62262727A (en) | 1987-11-14 |
Family
ID=14347929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61103202A Pending JPS62262727A (en) | 1986-05-07 | 1986-05-07 | Method for treating dimethyl sulfide or diethyl sulfide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62262727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326850A (en) * | 2006-05-09 | 2007-12-20 | Toray Fine Chemicals Co Ltd | Method for producing dicyclohexyl disulfide |
| JP2018198191A (en) * | 2017-05-22 | 2018-12-13 | 日本碍子株式会社 | Electrochemical device |
-
1986
- 1986-05-07 JP JP61103202A patent/JPS62262727A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326850A (en) * | 2006-05-09 | 2007-12-20 | Toray Fine Chemicals Co Ltd | Method for producing dicyclohexyl disulfide |
| JP2018198191A (en) * | 2017-05-22 | 2018-12-13 | 日本碍子株式会社 | Electrochemical device |
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