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    • 4. 发明授权
    • Method of recovering and dehydrating ethylene sulfide
    • 环硫乙烷回收脱水方法
    • US5833813A
    • 1998-11-10
    • US737207
    • 1996-11-07
    • Hitoshi YanoYoshinari YamaguchiHirokazu ItoRyuichi IshikawaYukihiro MatsumotoTeruhisa Kaziwara
    • Hitoshi YanoYoshinari YamaguchiHirokazu ItoRyuichi IshikawaYukihiro MatsumotoTeruhisa Kaziwara
    • B01D3/14C07D331/02B01D3/00
    • C07D331/02B01D3/146
    • A method of recovering ethylene sulfide from a hydrous stock solution (solution) containing ethylene sulfide, toluene (hydrophobic organic compound) having a higher boiling point than ethylene sulfide, and a compound having a higher boiling point than toluene, by distilling the stock solution continuously using a continuous fractionating tower 2, a fractionating tower 4, and a rectifying tower 5. Ethylene sulfide is distilled out with toluene and water from the continuous fractionating tower 2, and the distillate is allowed to separate into an oil layer and a water layer in a separating tank 3. The oil layer is distilled continuously by the fractionating tower 4 without being subjected to a reflux operation to distill out water with a part of ethylene sulfide. The bottom product from the fractionating tower 4 is rectified by the rectifying tower 5 to recover ethylene sulfide. Consequently, the polymerization reaction of ethylene sulfide can be suppressed and ethylene sulfide can be separated and recovered continuously in an efficient and stable manner. Also, the clogging of fractionating towers and pipes can be prevented.
    • PCT No.PCT / JP96 / 00890 Sec。 371日期:1996年11月7日 102(e)1996年11月7日PCT PCT 1996年4月2日PCT公布。 出版物WO96 / 31495 日期:1996年10月10日从含有环硫乙烷,沸点高于环硫乙烷的甲苯(疏水性有机化合物)和沸点高于甲苯的化合物的含水储备溶液(溶液)中回收环硫乙烷的方法, 使用连续分馏塔2,分馏塔4和精馏塔5连续蒸馏储备溶液。将来自连续分馏塔2的甲苯和水蒸馏出乙烯硫醚,使馏出物分离成油层 和分离罐3中的水层。油层通过分馏塔4连续蒸馏而不进行回流操作,以用一部分环硫乙烷蒸馏出水。 来自分馏塔4的底部产物由精馏塔5精馏,以回收硫化亚乙烯。 因此,可以抑制环硫乙烷的聚合反应,并且可以以有效且稳定的方式连续分离和回收环硫乙烷。 此外,可以防止分馏塔和管道的堵塞。
    • 5. 发明授权
    • Process for producing alkylene sulfide
    • 硫化亚烷的生产方法
    • US5763620A
    • 1998-06-09
    • US751362
    • 1995-11-22
    • Youichi HinoYoshitaka AritaNorihiro WakaoRyuichi Ishikawa
    • Youichi HinoYoshitaka AritaNorihiro WakaoRyuichi Ishikawa
    • C07D331/02
    • C07D331/02
    • A process for producing an alkylene sulfide, which comprises the step of subjecting a mercaptoalkanol to an intramolecular dehydration reaction in the presence of an acidic dehydration catalyst, to produce the alkylene sulfide, in which the intramolecular dehydration reaction is conducted under at least one conditions of (1) to (3). (1) The intramolecular dehydration reaction is conducted in at least one solvent selected from the group consisting of compounds having an amide group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, compounds having an unsubstituted amide group, compounds having a ureylene group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, and compounds having an unsubstituted ureylene group. (2) The intramolecular dehydration reaction is conducted in a solvent under such temperature and pressure conditions that the reaction temperature T (.degree.C.) and the boiling point tb (.degree.C.) of the solvent at the reaction pressure satisfy equation (tb-30).ltoreq.T.ltoreq.tb. (3) The intramolecular dehydration reaction is conducted in a solvent in the presence of a hydrocarbon having a boiling point at ordinary pressure of from 30.degree. C. to 180.degree. C. When the hydrocarbon has from 6 to 9 carbon atoms, the above-described effects are enhanced further. When the concentration of the hydrocarbon in the reaction mixture is maintained in the range of from 0.1 to 10% by weight, the above-described effects are enhanced even more.
    • 一种生产亚烷基硫化物的方法,其包括在酸性脱水催化剂存在下使巯基烷醇进行分子内脱水反应,生成亚烷基硫化物的步骤,其中分子内脱水反应在至少一种 (1)〜(3)。 (1)分子内脱水反应在至少一种溶剂中进行,所述溶剂选自由具有1至6个碳原子的烃基取代的酰胺基的化合物,具有未取代的酰胺基的化合物,具有 具有1〜6个碳原子的烃基取代的亚芳基和具有未取代的亚芳基的化合物。 (2)分子内脱水反应在溶剂中,在反应压力下的溶剂的反应温度T(℃)和沸点tb(℃)在温度和压力条件下进行,满足方程式(tb- 30)
    • 7. 发明授权
    • Method for manufacturing thiol compounds
    • 硫醇化合物的制备方法
    • US5821382A
    • 1998-10-13
    • US945087
    • 1997-10-16
    • Youichi HinoRyuichi IshikawaNorihiro Wakao
    • Youichi HinoRyuichi IshikawaNorihiro Wakao
    • C07C319/04C07C323/52C07C69/34
    • C07C319/04
    • In order to manufacture a thiol compound by causing reaction between an unsaturated compound and hydrogen sulfide, the unsaturated compound and the thiol compound being expressed by following formulas (1) and (2), respectively: CH.sub.2 .dbd.CR.sup.1 --COOR.sup.2 (1) HS--CH.sub.2 --CHR.sup.1 --COOR.sup.2 (2) where R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents a hydrogen atom or a hydrocarbon group with 1 to 18 carbon atoms, (i) at least one nitrogen containing compound which is selected from the group consisting of amide compounds each having an amide group without a substituent, amide compounds each having an amide group whose nitrogen atom has a substituent hydrocarbon group with 1 to 6 carbon atoms, urea compounds each having an ureylene group without a substituent, and urea compounds in each of which at least one of two nitrogen atoms (N, N') has a substituent hydrocarbon group with 1 to 6 carbon atoms, and (ii) either a polysulfide compound or sulfur, or the both, are made to coexist in a system of reaction.
    • PCT No.PCT / JP97 / 00635 Sec。 371日期:1997年10月16日 102(e)1997年10月16日PCT PCT 1997年2月28日PCT公布。 出版物WO97 / 33865 日期:1997年9月18日为了通过使不饱和化合物与硫化氢反应来制造硫醇化合物,不饱和化合物和硫醇化合物分别由下式(1)和(2)表示:CH2 = CR1-COOR2 (1)HS-CH2-CHR1-COOR2(2)其中R1表示氢原子或甲基,R2表示氢原子或碳原子数1〜18的烃基,(i)至少一种含氮化合物 其选自具有不具有取代基的酰胺基的酰胺化合物的酰胺化合物,各自具有氮原子具有1-6个碳原子的取代基的酰胺基的酰胺化合物,各自具有芳基的脲化合物,不具有 取代基和各自具有两个氮原子(N,N')中的至少一个具有1至6个碳原子的取代基烃基的脲化合物,和(ii)多硫化物化合物或硫或两者都是 在一起共存 反应体系。
    • 10. 发明授权
    • Apparatus for dewatering waste material by capillary action
    • 用于通过毛细管理来排除废物的装置
    • US5107757A
    • 1992-04-28
    • US251648
    • 1988-06-03
    • Takahiro OhshitaRyuichi IshikawaTetsuhisa HiroseKiyoshi Asai
    • Takahiro OhshitaRyuichi IshikawaTetsuhisa HiroseKiyoshi Asai
    • B30B9/06B30B9/20B30B9/24
    • B30B9/24B30B9/06B30B9/20
    • A method of and apparatus for dewatering a substance which is to be dewatered such as sludge wherein the substance to be dewatered is pressed between a pair of rollers (11, 212) or plate-shaped press members (331) each having its press surface formed from a rigid porous material (6, C, 331) having water absorption and retention properties based on the capillary action; water squeezed from the substance by pressing is permeated into the rigid porous material due to water absorption based on the capillary action or water pressure and the permeated water is retained by virtue of the water retention properties based on the capillary action, thereby dewatering the substance; and the water retained by the rigid porous material is discharged by sending pressurized air to regenerate the capillary tubes.
    • PCT No.PCT / JP86 / 00659 Sec。 371日期:1988年6月3日 102(e)日期1988年6月3日PCT Filted 1986年12月26日PCT公布。 出版物WO87 / 04114 日期:1987年7月16日。一种用于对要脱水的物质如污泥进行脱水的方法和设备,其中待脱水物质被压在一对辊(11,212)或板状压力构件 ),其各自具有由刚性多孔材料(6,C,331)形成的压力表面,所述刚性多孔材料具有基于毛细作用的吸水性和保留性; 由于基于毛细管作用或水压而吸收的水分,通过压制从物质挤压的水渗透到刚性多孔材料中,并且由于基于毛细管作用的保水性而保持渗透水,从而使物质脱水; 并且由刚性多孔材料保留的水通过发送加压空气而排出以再生毛细管。