Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine
    3.
    发明授权
    Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine 有权
    在制备高纯三乙二胺时得到的母液的处理

    公开(公告)号:US07345173B2

    公开(公告)日:2008-03-18

    申请号:US10138337

    申请日:2002-05-06

    IPC分类号: C07D487/00

    CPC分类号: C07D487/08

    摘要: In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.

    摘要翻译: 在其中TEDA蒸发并将气态TEDA进入液体溶剂并随后从其中结晶的三亚乙基二胺(TEDA)的纯化方法中,在TEDA结晶后获得的母液用萃取剂萃取,萃取剂为 不混溶或仅与母液的溶剂轻微混溶,其中TEDA易溶,并且在萃取后获得的TEDA贫化母液和/或用于萃取的富含TEDA的萃取剂返回至 的过程。

    Method for Obtaining Cyclododecatriene by Evaporation
    5.
    发明申请
    Method for Obtaining Cyclododecatriene by Evaporation 有权
    通过蒸发获得环十二碳三烯的方法

    公开(公告)号:US20080217158A1

    公开(公告)日:2008-09-11

    申请号:US11994122

    申请日:2006-06-30

    IPC分类号: B01D1/02 B01D1/26 B01D1/28

    CPC分类号: C07C7/04 C07C13/277

    摘要: Process for recovering cyclododecatriene (CDT) from a solution comprising CDT and high boilers such as deactivated catalyst and polymers, which comprises feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.

    摘要翻译: 从包括CDT和高沸点剂如失活催化剂和聚合物的溶液中回收环十二碳三烯(CDT)的方法,其包括将溶液进料到预热器中并加热,随后通过下游压力维持装置将其减压并将所得的两相 混合物进入螺旋管蒸发器,并且通过部分蒸发降低液相的CDT含量并排出具有增加的CDT浓度的气态产物流。

    Method for obtaining cyclododecatriene by evaporation
    6.
    发明授权
    Method for obtaining cyclododecatriene by evaporation 有权
    通过蒸发得到环十二碳三烯的方法

    公开(公告)号:US07959766B2

    公开(公告)日:2011-06-14

    申请号:US11994122

    申请日:2006-06-30

    IPC分类号: B01D3/04 C07C7/04 C07C13/277

    CPC分类号: C07C7/04 C07C13/277

    摘要: Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.

    摘要翻译: 从含有CDT和高沸点物如失活催化剂和聚合物的溶液中回收环十二碳三烯(CDT)的方法,其包括将溶液进料到预热器中并加热,随后通过下游压力维持装置将其减压并将所得的两相 混合物进入螺旋管蒸发器,并且通过部分蒸发降低液相的CDT含量并排出具有增加的CDT浓度的气态产物流。

    Method for producing highly concentrated formaldehyde solution
    7.
    发明授权
    Method for producing highly concentrated formaldehyde solution 失效
    生产高浓度甲醛溶液的方法

    公开(公告)号:US07342139B2

    公开(公告)日:2008-03-11

    申请号:US10588662

    申请日:2005-02-10

    IPC分类号: C07C45/78

    CPC分类号: C07C45/82 C07C47/04

    摘要: A process for preparing a high-concentration formaldehyde solution by removing water from a lower-concentration formaldehyde solution having a formaldehyde content of from 5 to 50% by weight, in which the lower-concentration formaldehyde solution is fed to a preheater and heated in the preheater, depressurized via a pressure maintenance device and concentrated in a helical tube evaporator to give a vapor stream and the high-concentration formaldehyde solution as bottom stream, wherein the heated lower-concentration formaldehyde hyde solution is depressurized in the pressure maintenance device to give a two-phase mixture which is fed into the helical tube evaporator, is proposed.

    摘要翻译: 通过从甲醛含量为5〜50重量%的低浓度甲醛溶液中除去水而制备高浓度甲醛溶液的方法,其中将低浓度甲醛溶液加入到预热器中并在 预热器,通过压力维持装置减压,并浓缩在螺旋管蒸发器中,得到蒸气流,高浓度甲醛溶液作为底部流,其中加压的低浓度甲醛海藻溶液在压力维持装置中减压,得到 提出了进入螺旋管蒸发器的两相混合物。

    Method for producing highly concentrated formaldehyde solution
    8.
    发明申请
    Method for producing highly concentrated formaldehyde solution 失效
    生产高浓度甲醛溶液的方法

    公开(公告)号:US20070135660A1

    公开(公告)日:2007-06-14

    申请号:US10588662

    申请日:2005-02-10

    IPC分类号: C07C45/00

    CPC分类号: C07C45/82 C07C47/04

    摘要: A process for preparing a high-concentration formaldehyde solution by removing water from a lower-concentration formaldehyde solution having a formaldehyde content of from 5 to 50% by weight, in which the lower-concentration formaldehyde solution is fed to a preheater and heated in the preheater, depressurized via a pressure maintenance device and concentrated in a helical tube evaporator to give a vapor stream and the high-concentration formaldehyde solution as bottom stream, wherein the heated lower-concentration formaldehyde hyde solution is depressurized in the pressure maintenance device to give a two-phase mixture which is fed into the helical tube evaporator, is proposed.

    摘要翻译: 通过从甲醛含量为5〜50重量%的低浓度甲醛溶液中除去水而制备高浓度甲醛溶液的方法,其中将低浓度甲醛溶液加入到预热器中并在 预热器,通过压力维持装置减压,并浓缩在螺旋管蒸发器中,得到蒸气流,高浓度甲醛溶液作为底部流,其中加压的低浓度甲醛海藻溶液在压力维持装置中减压,得到 提出了进入螺旋管蒸发器的两相混合物。

    Process for purifying aqueous glyoxal solutions
    9.
    发明授权
    Process for purifying aqueous glyoxal solutions 有权
    纯化乙二醛水溶液的方法

    公开(公告)号:US08461396B2

    公开(公告)日:2013-06-11

    申请号:US13251713

    申请日:2011-10-03

    IPC分类号: C07C45/80

    CPC分类号: C07C45/80 C07C47/127

    摘要: A process for purifying an aqueous glyoxal solution comprising at least one acid by extractive acid removal, comprising i) mixing and dispersion of the aqueous glyoxal solution with an ion exchanger solution comprising a tertiary amine and an organic solvent, ii) phase separation and removal of the ion exchanger solution laden with the acid from the aqueous glyoxal solution, and iii) regeneration of the ion exchanger solution by contacting with a basic compound for neutralization of the acid and removal of the basic compound, iv) mixing and dispersion of the ion exchanger solution with water to obtain a dispersion of water and ion exchanger solution, v) Phase separation and removal of the aqueous phase from the ion exchanger solution in such a way that the content of the aqueous phase of the regenerated ion exchanger solution is

    摘要翻译: 一种用于通过除去酸去除包含至少一种酸的乙二醛水溶液的方法,包括:i)将乙二醛水溶液与包含叔胺和有机溶剂的离子交换剂溶液混合和分散,ii)相分离和除去 所述离子交换剂溶液含有来自乙二醛水溶液的酸,和iii)通过与用于中和酸和碱性化合物的去除的碱性化合物接触来再生离子交换剂溶液,iv)离子交换剂的混合和分散 溶液,以获得水和离子交换剂溶液的分散体,v)从离子交换剂溶液中相分离和除去水相,使得再生离子交换剂溶液的水相含量<1% 并将离子交换剂溶液再循环到步骤i)中。

    Device for supplying electrical power to a fuel pump of a motor vehicle internal combustion engine
    10.
    发明授权
    Device for supplying electrical power to a fuel pump of a motor vehicle internal combustion engine 失效
    用于向机动车内燃机的燃料泵供电的装置

    公开(公告)号:US07830108B2

    公开(公告)日:2010-11-09

    申请号:US11632620

    申请日:2005-07-26

    申请人: Bernd Rumpf

    发明人: Bernd Rumpf

    IPC分类号: F02D1/00

    CPC分类号: H02J7/0065 B60R16/03

    摘要: A device (1) for supplying electric current to the fuel pump (2) of a motor vehicle internal combustion engine (3) comprises a DC/DC converter (13) which increases voltage to a predetermined value in the event of a voltage drop of a direct current source (7). This ensures an adequate voltage supply of the fuel pump (2) even at low voltages of the direct voltage source. When the voltage (15) of the direct voltage source (7) is sufficient, the DC/DC converter (13) is bridged, so that the fuel pump (2) is directly supplied with fuel from the direct voltage source (7). The DC/DC converter is also bridged when the device is faulty.

    摘要翻译: 一种用于向汽车内燃机(3)的燃料泵(2)供给电流的装置(1)包括DC / DC转换器(13),其在电压下降时将电压增加到预定值 直流电源(7)。 这样即使在直流电压源的低电压下也能确保燃料泵(2)的足够的电压供应。 当直流电压源(7)的电压(15)足够时,DC / DC转换器(13)被桥接,使燃料泵(2)直接从直流电源(7)供给燃料。 当设备故障时,DC / DC转换器也桥接。