• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In the hydroformylation of alkenes to aldehydes, rhodium is recovered from the stripped overhead of the hydroformylation reactor by condensing the overhead, removing the bulk of the aldehyde product from the condensed overhead, stripping the residue which remains with nitrogen gas to remove minor amounts of highly volatile aldehyde product remaining in the residue and redistilling the residue to remove components from the condensed overhead which are lower boiling than the catalyst components. The catalyst components including rhodium and phosphine ligand are returned to the hydroformylation reactor.
    公开号:SU1676441A3
    申请号:SU884356763
    申请日:1988-10-26
    公开日:1991-09-07
    发明作者:А.Лэйрд Кит
    申请人:Хехст Силаниз Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    yo
    This invention relates to methods for removing oil aldehyde from propylene hydroformylation reaction mixture, which consists in chemically reacting a mixture of hydrogen and carbon monoxide with propylene in the presence of a catalyst that includes the rhodium complex compound with triphenylphosphino. The reaction proceeds in the presence of a liquid reaction medium including a high temperature solvent boil.
    The purpose of the invention is to simplify the process technology.
    Example. Propylene is subjected to hydroformylation in a polyalkylene glycol solvent of the reaction mixture. The catalyst includes a rhodium complex with a triphenylphosphine ligand. This product is continuously removed from the hydroforming reactor in the vapor phase in a gas stream comprising carbon monoxide, hydrogen and propylene, which is continuously bubbled through the liquid contained in the hydroformylation reactor, then removed from the top of the reactor. the resulting oil aldehyde in the form of vapor. Gases removed from the upper part of the hydroformylation reactor are passed through a condenser, in order to condense the crude hydroformylation reaction product, which is then reused distill off in order to recover the bulk of the aldehyde oil for further processing. Residual products left after
    ABOUT
    VI


    GO
    removal of oil aldehyde consists mainly of compounds having a boiling point at atmospheric pressure above 384 ° C, which are initially contained in the condensate of the crude hydroformylation reaction product “Residual product of heavy floods after the removal of oil aldehyde contains with negligible amounts of butyric aldehyde and butanol, significant amounts of 2-ethylhexane, 2-ethylhexenal, butyrate, triorganophosphines, and heavy distillates, including a large amount of solvent, It also contains about / Om a year, even if the gases removed from the hydroforming reactor 3 pass through approximately 1.2 m drop separator, irrigated with liquid reflux in an amount of approximately 0.334 liters of liquid per 1 m2 section gaskets in 1 s
    Approximate analysis of the residual product of heavy flows, wt%: Oil aldehyde 0.5 Butanol9.1
    2-Ethylhexenal 28.5 2-Ethylg xanal 22.3 Butyl butyrate 15, /
    Phosphine14,5
    Total fractions 0.3 Rhodium, 70 million
    The residual product containing rhodium passes 91 kg / h to the top of the oil aldehyde distillation column. It is a column with a nozzle with a diameter of 10 cm and a height of 3.6 m. The column is equipped with Raschig rings (16 mm) with a residual product temperature of 146 ° C at a pressure of 1/0 atm. The flow rate of nitrogen at a temperature of 2 / ° C and a pressure of 9.6 atm, directed countercurrent to the residual product, is 22 / kg / hr. Analytical data of the distilled steam removed from the upper parts of the distillation column, as well as data from the residual product analysis kta following kg / h (mass%):
    Steam distilled:
    aldehyde oil 0,453 (1,1)
    and
    , y 15 20 25
    about
    m d
    Sh
    4.5 / (10.9) 2.3 (5.4) 5.5 (12.9) /, 3 (17.0) (-)
    (-) (-) 22.7 (52.8)
    3.6 (5.1)
    23, / (33.5)
    14, / (20.9)
    6.9 (9.8)
    13.2 (18.7)
    50
    butanol
    2-ethylhexanal
    2-ethylhexanal
    butyl butyrate
    phosphines
    heavy fractions
    (others)
    air
    Nitrogen Residual Product:
    oil aldehyde
    butanol
    2-ethnhexanal
    2-ethylhexanal
    butyl butyrate
    phosphines
    heavy fractions
    (other) 8.5 (12.0)
    air- (-)
    nitrogen- (-)
    The proposed method allows the removal of aldehyde oil from the reaction mixture in an inert atmosphere (nitrogen) at a low temperature, which significantly improves the safety of the process and its technology.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A method of removing oil aldehyde from a reaction mixture containing small amounts of oil aldehyde and byproducts of hydroformylation of propylene in a liquid reaction medium, triphenylphosphine and rhodium in an amount of 70 by distillation at elevated temperatures and pressures, characterized in that, in order to simplify the process process, the distillation is carried out in a column with a nozzle in the presence of nitrogen, with a supply of nitrogen at 2 / ° C and 9.6 atm countercurrent with respect to the reaction mixture, which is introduced into the upper part of the column at 146 ° C and 1 / atm, with tborom in one cycle from the top of stripping column product containing components of the reaction mixture with a boiling point below the boiling point trife- nilfosfinvs
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0016285B1|1983-04-06|Process for the production of valeraldehydes by hydroformylation of butene-1
    RU2041198C1|1995-08-09|Process for preparing c3-c5 aldehydes
    US6500311B1|2002-12-31|Propylene oxide purification
    SU1676441A3|1991-09-07|Method of removing oleic aldehyde from reaction mixture
    US4076594A|1978-02-28|Purification of formic acid by extractive distillation
    US4944927A|1990-07-31|Process for the recovery of metals
    US4613701A|1986-09-23|Recovery of rhodium from hydroformylation reaction product
    JP4555483B2|2010-09-29|Method for separating a liquid crude aldehyde mixture by distillation
    US4444624A|1984-04-24|Process for separating acetone from carbonylation mixtures
    US3957880A|1976-05-18|Extractive distillation of a methacrolein effluent
    JP2006514087A|2006-04-27|Purification of 1,3-propanediol by distillation
    RU1776258C|1992-11-15|Process for separation of ethyleneoxide from acetaldehyde and formaldehyde contaminants
    US6696603B2|2004-02-24|Method for cleaning off-gas flows
    JPH0832667B2|1996-03-29|Purification method of dimethyl carbonate
    US4388154A|1983-06-14|Isolation of acetaldehyde and methanol from reaction mixtures resulting from the homologization of methanol
    EP0612714A1|1994-08-31|Process and plant for the purification of raw maleic anhydride recovered from gaseous reaction mixtures
    US2841618A|1958-07-01|Aldehyde purification
    KR20010052356A|2001-06-25|Removal of Impurities from a Hydrocarbon Component or Fraction
    CN1033748A|1989-07-12|The recovery of noble metal
    CA1215720A|1986-12-23|PROCESS FOR PRODUCING .alpha.-ACETOXYPROPIONALDEHYDE
    CA1157880A|1983-11-29|Purification of carboxylic acid esters containingaldehydes and/or acetals
    US4383894A|1983-05-17|Removal of organic iodine compounds from acetaldehyde
    KR100194116B1|1999-06-15|Acetone Separation Method
    EP0097891A1|1984-01-11|A method for refining crude aldehyde products
    KR100545611B1|2006-01-25|Process for preparing methacrylate ester
    同族专利:
    公开号 | 公开日
    US4871879A|1989-10-03|
    MX167056B|1993-03-01|
    AU618288B2|1991-12-19|
    CA1301190C|1992-05-19|
    CN1019192B|1992-11-25|
    AU2410488A|1989-04-27|
    JP2602707B2|1997-04-23|
    CN1033794A|1989-07-12|
    JPH01148713A|1989-06-12|
    EP0314434A1|1989-05-03|
    DD283371A5|1990-10-10|
    BR8805512A|1989-07-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1833717A|1927-01-13|1931-11-24|Heat Treating Company|Purification and concentration of liquids|
    US4188363A|1976-08-19|1980-02-12|Bayer Aktiengesellschaft|Recovery of rhodium complex catalysts homogeneously dissolved in organic media|
    JPS6054939B2|1977-08-04|1985-12-03|Sumitomo Chemical Co|
    DE2915830A1|1979-04-19|1980-10-23|Basf Ag|PRODUCTION OF TOLUYLENE DIISOCYANATE AND / OR HIGH-BOILING SOLVENTS IN THE FLUID BED FROM DISTILLATION RESIDUES OF THE TOLUYLENE DIISOCANATE PRODUCTION|
    US4258215A|1979-08-29|1981-03-24|Eastman Kodak Company|Hydroformylation process|
    DE3114147A1|1981-04-08|1982-10-28|Basf Ag, 6700 Ludwigshafen|METHOD FOR OBTAINING ALDEHYDES|
    US4593127A|1985-01-11|1986-06-03|Union Carbide Corporation|Hydroformylation process|
    US4613701A|1985-09-19|1986-09-23|Celanese Corporation|Recovery of rhodium from hydroformylation reaction product|US5030774A|1986-10-03|1991-07-09|Exxon Research And Engineering Co.|Process for the hydroformylation of sulfur-containing thermally cracked petroleum residue and novel products thereof|
    US5001274A|1989-06-23|1991-03-19|Union Carbide Chemicals And Plastics Company Inc.|Hydroformylation process|
    DE4135049A1|1991-10-24|1993-05-06|Hoechst Ag, 6230 Frankfurt, De|METHOD FOR THE RECOVERY OF RHODIUM FROM THE REACTION PRODUCTS OF THE OXOSYNTHESIS|
    US5865957A|1994-12-01|1999-02-02|Mitsubishi Chemical Company|Method for producing butyraldehydes|
    US6599348B2|2001-06-01|2003-07-29|Celanese International Corporation|Methods for reducing entrainment of solids and liquids|
    US7667079B2|2005-04-21|2010-02-23|Oxea Corporation|Processes for recovery of a triarylphosphine from a group VIII metal catalyst complex mixture|
    CN102826972B|2011-06-17|2015-05-13|中国石油化工股份有限公司|Method for preparing aldehydes though hydroformylation of olefins|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US07/114,171|US4871879A|1987-10-27|1987-10-27|Rhodium recovery from hydroformylation reaction product|
    [返回顶部]