Dividing wall column for fractionation of a multicomponent mixture
    2.
    发明申请
    Dividing wall column for fractionation of a multicomponent mixture 有权
    分隔壁柱用于多组分混合物的分馏

    公开(公告)号:US20110139604A1

    公开(公告)日:2011-06-16

    申请号:US09782305

    申请日:2001-02-14

    IPC分类号: B01D3/16

    摘要: A dividing wall column comprises the following segments:a) an upper column region (1),b) an enrichment section (2) of the feed section,c) a stripping section (4) of the feed section,d) an upper part (3) of the offtake section,e) a lower part (5) of the offtake section,f) an intermediate region (9) of the feed section,g) an intermediate region (10) of the offtake section andh) a lower column region (6).For the purposes of the present invention, it is essential that the dividing wall (7) is located vertically between the segments b) (2) and d) (3) and between the segments c) (4) and e) (5), the segments b) (2), d) (3), c) (4) and e) (5) have separation-active internals and the cross-sectional area Ab of the segment b) (2) is at least 10% smaller than the cross-sectional area Ad of segment d) (3), and the cross-sectional area Ac of the segment c) (4) is at least 10% greater than the cross-sectional area Ae of segment e) (5).

    摘要翻译: 分隔壁柱包括以下部分:a)上部柱区域(1),b)进料部分的富集部分(2),c)进料部分的汽提部分(4),d)上部部分 (3),e)出料部分的下部(5),f)进料部分的中间区域(9),g)出料部分的中间区域(10)和h)a 下列区域(6)。 为了本发明的目的,重要的是分隔壁(7)垂直位于段b)(2)和d)(3)之间以及段c)(4)和e)(5)之间。 ,分段b)(2),d)(3),c)(4)和e)(5)具有分离活性的内部,并且段b)(2)的横截面积Ab至少为10 (3)段的横截面面积Ad的百分比小于段c)(4)的横截面积Ac比段e)的横截面积Ae至少大10%( 5)。

    Dividing wall column for fractionation of a multicomponent mixture
    3.
    发明授权
    Dividing wall column for fractionation of a multicomponent mixture 有权
    分隔壁柱用于多组分混合物的分馏

    公开(公告)号:US08092655B2

    公开(公告)日:2012-01-10

    申请号:US09782305

    申请日:2001-02-14

    IPC分类号: B01D1/14 B01D3/42 C07C67/54

    摘要: A dividing wall column is described which includes the following segments:a) an upper column region (1),b) an enrichment section (2) of the feed section,c) a stripping section (4) of the feed section,d) an upper part (3) of the offtake section,e) a lower part (5) of the offtake section,f) an intermediate region (9) of the feed section,g) an intermediate region (10) of the offtake section andh) a lower column region (6).The dividing wall column has a dividing wall (7) is located vertically between the segments b) (2) and d) (3) and between the segments c) (4) and e) (5). The segments b) (2), d) (3), c) (4) and e) (5) have separation-active internals, Segment b (2) has a cross-sectional area Ab which is at least 10% smaller than the cross-sectional area Ad of segment d) (3), and segment c) has a cross-sectional area Ac which is at least 10% greater than the cross-sectional area Ae of segment e) (5).

    摘要翻译: 描述了分隔壁柱,其包括以下部分:a)上部柱区域(1),b)进料部分的富集部分(2),c)进料部分的汽提部分(4),d) 所述出料部分的上部(3),e)所述出料部分的下部(5),f)所述进料部分的中间区域(9),g)所述出料部分的中间区域(10)和 h)较低的列区域(6)。 分隔壁柱具有位于段b)(2)和d)(3)之间以及段c)(4)和e)(5)之间的分隔壁(7)。 段b)(2),d)(3),c)(4)和e)(5)具有分离活性内部,段b(2)的横截面积Ab至少减小10% 比段d)(3)的截面面积Ad大,截面积Ac的截面面积Ac比段e)(5)的横截面面积Ae至少大10%。

    PROCESS FOR OBTAINING MALEIC ANHYDRIDE BY DISTILLATION
    5.
    发明申请
    PROCESS FOR OBTAINING MALEIC ANHYDRIDE BY DISTILLATION 有权
    通过蒸馏获得马来酸酐的方法

    公开(公告)号:US20100113805A1

    公开(公告)日:2010-05-06

    申请号:US12532660

    申请日:2008-03-19

    IPC分类号: C07D307/60

    摘要: What is described is a process for obtaining maleic anhydride by distillation from a solution of maleic anhydride in a high-boiling absorbent which has been obtained by gas phase oxidation of a hydrocarbon and at least partial absorption of the oxidation products into the absorbent, by i) introducing the solution into the side of a feed column with a rectifying section disposed above the feed point and a stripping section disposed below the feed point, ii) providing an upper combining column which communicates with the upper end of the rectifying section and a lower combining column which communicates with the lower end of the stripping section, iii) providing a draw column which communicates with the upper combining column and the lower combining column, iv) drawing maleic anhydride off as a side draw from the draw column, and drawing off compounds having a lower boiling point than maleic anhydride at the top of the upper combining column and the high-boiling absorbent at the bottom of the lower combining column. The maleic anhydride obtained as a side draw has a low content of acrylic acid and acetic acid.

    摘要翻译: 所描述的是通过蒸馏从马来酸酐在高沸点吸收剂中的溶液获得马来酸酐的方法,其通过烃的气相氧化和至少部分吸收氧化产物进入吸收剂中获得, 将溶液引入进料塔的侧面,其中设置在进料点上方的精馏部分和设置在进料点下方的汽提部分,ii)提供与精馏部分的上端连通的上部混合塔和下部 组合柱与汽提部分的下端连通,iii)提供与上部混合塔和下部混合塔连通的牵引柱,iv)将拉伸马来酸酐作为拉伸塔的牵引拉出,拉出 在上部混合塔的顶部具有比马来酸酐低的沸点的化合物和在底部o的高沸点吸收剂 f下组合列。 作为侧馏分获得的马来酸酐具有低含量的丙烯酸和乙酸。

    PROCESS FOR CONTINUOUS HYDROGENATION OR HYDROGENATING AMINATION
    6.
    发明申请
    PROCESS FOR CONTINUOUS HYDROGENATION OR HYDROGENATING AMINATION 有权
    连续加氢或加氢胺化的方法

    公开(公告)号:US20100081804A1

    公开(公告)日:2010-04-01

    申请号:US12090377

    申请日:2006-10-16

    IPC分类号: C07D265/30 C07C45/00

    摘要: A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.

    摘要翻译: 描述了在第一部分氢气压力下在氢气存在下将不饱和化合物连续氢化的方法,其中第一氢化催化剂的颗粒悬浮在其中溶解不饱和化合物的液相中,液相,以及 在第一个温度下,通过气泡塔反应器与重力方向并流,将来自泡罩塔反应器的流出物送入气液分离,将液相送至交叉过滤,得到滞留物 和滤液,将滞留物再循环到泡罩塔反应器中,并且在第二部分氢气压力和第二温度下在氢气存在下将滤液通过第二氢化催化剂床,其中第二 部分氢气压力比第一部分氢气压力高至少10巴。

    METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE
    7.
    发明申请
    METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE 审中-公开
    在制备马来酸酐时防止含氟酸沉积物的方法

    公开(公告)号:US20090143601A1

    公开(公告)日:2009-06-04

    申请号:US12300571

    申请日:2007-05-16

    IPC分类号: C07D307/60

    CPC分类号: C07C51/573 C07C57/145

    摘要: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps:a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent,b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent,the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).

    摘要翻译: 本发明提供了一种在制备马来酸酐中防止富马酸沉积的方法,包括以下步骤:a)将C4-二羧酸或衍生物从粗产物混合物中吸收到作为吸收剂的有机溶剂或水中 b)从吸收剂中除去C4-二羧酸或衍生物,这样回收的吸收剂被完全或部分催化氢化,或者完全或部分地再循环到吸收阶段(a)中。

    Method for the separation of ascorbic acid from a polar solvent containing ascorbic acid and 2-keto-l-gulonic acid
    9.
    发明申请
    Method for the separation of ascorbic acid from a polar solvent containing ascorbic acid and 2-keto-l-gulonic acid 失效
    将抗坏血酸与含有抗坏血酸和2-酮-L-古洛糖酸的极性溶剂分离的方法

    公开(公告)号:US20050197504A1

    公开(公告)日:2005-09-08

    申请号:US10515625

    申请日:2003-07-07

    IPC分类号: C07D307/62 C07D305/12

    CPC分类号: C07D307/62 Y02P20/582

    摘要: The invention relates to a method for the separation of ascorbic acid from a mixture containing ascorbic acid and 2-keto-L-gulonic acid in a polar, preferably aqueous solvent, by means of liquid/liquid extraction using an amide. The method preferably also comprises steps for the back-extraction of the ascorbic acid, recycling of the extraction solvent and/or the back extraction solvent and for isolation of the ascorbic acid from the back extraction solvent. The invention further relates to a method for the production of ascorbic acid from KGA and isolation of the ascorbic acid so produced.

    摘要翻译: 本发明涉及通过使用酰胺的液/液萃取从抗坏血酸和2-酮-L-古洛糖酸的混合物中分离抗坏血酸在极性,优选水性溶剂中的方法。 该方法优选还包括用于反萃取抗坏血酸的步骤,提取溶剂和/或反萃取溶剂的再循环以及用于从反萃取溶剂中分离抗坏血酸的步骤。 本发明还涉及从KGA生产抗坏血酸并分离如此生产的抗坏血酸的方法。