中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

50 records (took 0.023 seconds)

    32.
    发明专利
    未知

    公开(公告)号：DE102005014177A1

    公开(公告)日：2006-10-05

    申请号：DE102005014177

    申请日：2005-03-29

    Applicant: BASF AG

    Inventor： HILL THOMAS ,  MILLER CHRISTIAN

    IPC: C07C5/13 ,  C07C7/04 ,  C07C7/163 ,  C07C11/02

    Abstract: A process is proposed for obtaining a stream of aliphatic hydrocarbons comprising from 5 to 12 carbon atoms per molecule, with an increased proportion of linear alpha-olefins compared to a feed stream of aliphatic hydrocarbons comprising from 5 to 12 carbon atoms per molecule, with a content of linear alpha-olefins, linear internal olefins and dienes, wherein the feed stream is fed to a first distillation zone D 1 having at least 5 theoretical plates, in which the linear alpha-olefins are removed partly or fully as a component of a vapor stream which additionally also comprises the dienes, and at whose lower end a liquid stream is obtained which has been depleted partly or fully of linear alpha-olefins, the liquid stream from the lower end of the first distillation zone D 1 is introduced into a isomerization unit which is equipped with an isomerization catalyst over which the linear internal olefins are isomerized partly or fully to linear alpha-olefins, and the linear alpha-olefins formed in this way are removed as a component of a vapor stream ascending into the first distillation zone D 1, the vapor stream ascending out of the first distillation zone D 1 enters a selective hydrogenation unit in which at least a portion of the dienes are hydrogenated selectively to olefins over a low-isomerization selective hydrogenation catalyst to obtain a vapor stream which is drawn off, condensed fully or partly and drawn off as a product stream with an increased proportion of linear alpha-olefins compared to the feed stream.

    38.
    发明专利
    未知

    公开(公告)号：DE10163335A1

    公开(公告)日：2003-07-10

    申请号：DE10163335

    申请日：2001-12-21

    Applicant: BASF AG

    Inventor： KAIBEL GERD ,  MILLER CHRISTIAN ,  KLAS KATRIN ,  KINDLER ALOIS ,  AQUILA WERNER ,  DOBLER WALTER ,  BREUER KLAUS ,  POMMER ACHIM ,  DIRNSTEINER THOMAS

    IPC: B01D3/26 ,  B01D3/14 ,  B01D3/00

    Abstract: Distillation column has a dividing wall which divides it into inflow and extraction sections, and upper and lower column zones. The mixture for distillation comprises a vapor feed which enters between the upper and lower inflow sections, between which the side extraction point removes vapor. The inflow and the extraction zones are offset relative too the dividing wall. The vapor feed rate is equal in all zones of the column. The distillation column has a dividing wall (TW) which divides it into an inflow section (2,4), an extraction section (3,5), and common upper (1) and lower (6) column zones. The mixture for distillation is at least partially a vapor feed (F) which enters between the upper and lower inflow sections, and the side extraction point (B) removes vapor between the upper and lower extraction zones. The cross sectional surfaces of the inflow and the extraction zones are set by an offset in the dividing wall. The F-factor is equal in all the zones of the column, defined as the product of the gas flow speed in m/seconds multiplied with the square root of the gas density in kg/m3.

Patent Agency Ranking