Continuous hydroformylation of olefinically unsaturated compounds
    1.
    发明授权
    Continuous hydroformylation of olefinically unsaturated compounds 失效
    烯属不饱和化合物的连续加氢甲酰化

    公开(公告)号:US4778929A

    公开(公告)日:1988-10-18

    申请号:US70963

    申请日:1987-07-08

    CPC分类号: C07C45/50

    摘要: Olefinically unsaturated compounds are hydroformylated continuously, the olefin being passed into the lower region of the reactor, under from 1 to 40 bar and at from 50.degree. to 140.degree. C. with the aid of a rhodium complex as a catalyst in a hydroformylation reactor having a liquid reaction zone which occupies about 60-85% of the reactor volume, the gaseous products and reactants being removed from the hydroformylation reactor, the products being isolated and the major part of the remaining gas being recycled to the reactor by the cycle gas method, by a process in which from 20 to 80% by volume of the cycle gas is fed into the hydroformylation reactor above the liquid reaction zone and/or below the liquid surface in the top fourth of the liquid reaction zone.

    摘要翻译: 烯化不饱和化合物连续加氢甲酰化,在加氢甲酰化反应器中借助于铑络合物作为催化剂,将烯烃在1至40巴和50至140℃下进入反应器的下部区域, 占反应器体积约60-85%的液体反应区,气态产物和反应物从加氢甲酰化反应器中除去,产物被分离,剩余气体的主要部分通过循环气体法再循环到反应器 ,其中循环气体的20至80体积%被输入到液体反应区上方的加氢甲酰化反应器和/或液体反应区顶部第四个液体表面下方的流程。

    Recovery of carboxylic acids from oxo residues
    2.
    发明授权
    Recovery of carboxylic acids from oxo residues 失效
    从羰基残基中回收羧酸

    公开(公告)号:US4002539A

    公开(公告)日:1977-01-11

    申请号:US508162

    申请日:1974-09-23

    摘要: A process for isolating carboxylic acids from residues of the oxo reaction which are obtained as residues, on hydroformylation of ethylene or propylene, optionally after removing a part of the aldehydes produced, subsequent hydrogenation, treatment with aqueous alkali metal hydroxide solutions and subsequent distillation, wherein the residues are acidified with strong mineral acids to a pH of from 2-4, the acidified mixture not containing more than 5 parts by weight of water per part by weight of the carboxylic acids contained in the mixture, the organic phase is then separated off and the carboxylic acids are isolated therefrom by distillation at pressures below 150 mbar. The carboxylic acids obtained can be used as solvents or for the manufacture of esters.

    摘要翻译: 从羰基反应的残留物中分离出羧酸的方法,其作为残余物,在乙烯或丙烯的加氢甲酰化作用下,任选地在除去一部分所生成的醛后,随后氢化,用碱金属氢氧化物水溶液处理和随后的蒸馏而获得,其中 残留物用强无机酸酸化至pH为2-4,酸化混合物不含每重量份混合物中所含的羧酸5重量份以上的水,然后将有机相分离 并且通过在低于150毫巴的压力下蒸馏分离羧酸。 所得羧酸可用作溶剂或用于制备酯。

    Obtaining but-2-enes from C.sub.4 -hydrocarbon mixtures which contain
but-1-ene and may or may not contain but-2-enes
    3.
    发明授权
    Obtaining but-2-enes from C.sub.4 -hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes 失效
    从含有1-丁烯的C4-烃混合物中获得丁-2-烯,并且可以含有或不含有2-烯的

    公开(公告)号:US4777322A

    公开(公告)日:1988-10-11

    申请号:US759234

    申请日:1985-07-26

    摘要: But-2-enes are obtained from C.sub.4 -hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes by catalytic isomerization of the but-1-ene to but-2-enes in an isomerization zone at elevated temperatures by a process in which the isomerization is carried out in combination with a distillative separation zone, the said hydrocarbon mixture being fed to the isomerization zone and/or distillative separation zone, the isomerization mixture obtained from the isomerization zone is passed into the distillative separation zone, a but-1-ene-containing fraction is removed above the lower third of the distillative separation zone and passed into the isomerization zone, and the but-2-enes or a fraction containing these are or is removed in the lower third of the distillative separation zone.

    摘要翻译: 丁-2-烯通过含有丁-1-烯的C 4烃混合物获得,并且可以通过在异构化区中丁-1-烯与丁-2-烯的催化异构化而含有或不含有2-烯 在升高的温度下,通过与蒸馏分离区组合进行异构化的方法,将所述烃混合物进料到异构化区和/或蒸馏分离区,将从异构化区获得的异构化混合物送入 蒸馏分离区,含有1-丁烯的馏分在蒸馏分离区的三分之一以下被除去并进入异构化区,并且将2-烯烃或其中含有的馏分在下部 三分之一的蒸馏分离区。

    Recovery of aldehydes from hydroformylation reaction gas
    4.
    发明授权
    Recovery of aldehydes from hydroformylation reaction gas 失效
    从加氢甲酰化反应气中回收醛

    公开(公告)号:US4479012A

    公开(公告)日:1984-10-23

    申请号:US363565

    申请日:1982-03-30

    摘要: Aldehydes are obtained from the gaseous product of the hydroformylation of olefinically unsaturated compounds using a rhodium catalyst by a process (cf. FIG. 2) in which(a) this gaseous product is introduced, without being cooled or depressured, into a distillation column D,(b) the top fraction from this column is cooled in a condenser K so that the greater part of the aldehydes contained therein is condensed,(c) the condensate is separated, in a separator A, into a gas phase and a liquid phase,(d) the gas phase from A, after waste gas has been separated off, is again brought to the hydroformylation pressure by means of a compressor P, and is returned to the reactor as a recycle gas,(e) the liquid phase from A is returned to D, and(f) the aldehydes are taken off from column D as liquid bottom products and/or as a vaporous side stream.

    摘要翻译: 醛通过使用铑催化剂的方法(参见图2)从烯属不饱和化合物的加氢甲酰化的气态产物获得,其中(a)将该气态产物不经冷却或减压引入蒸馏塔D ,(b)将该塔的顶部馏分在冷凝器K中冷却,使其中含有的大部分醛缩合,(c)冷凝物在分离器A中分离成气相和液相 ,(d)在废气分离后,来自A的气相再次通过压缩机P进入加氢甲酰化反应器,并作为循环气体返回到反应器,(e)液相从 A返回到D,和(f)醛作为液体底部产物和/或作为蒸气侧流从塔D中取出。

    Continuous manufacture of formamide
    6.
    发明授权
    Continuous manufacture of formamide 失效
    连续生产甲酰胺

    公开(公告)号:US4134915A

    公开(公告)日:1979-01-16

    申请号:US793788

    申请日:1977-05-05

    CPC分类号: C07C231/02

    摘要: Formamide is manufactured continuously from methyl formate and gaseous ammonia. The reaction is carried out in a reactor at from 30 to 90.degree. C, from 5 to 20% by volume of the reactor output is drawn off continuously and fed to the formamide working-up stage, and the remainder of the reactor output is cooled, in an external circuit maintained by means of a pump, to from 25 to 60.degree. C and is mixed with the amount of fresh methyl formate required for steady-state operation, after which the appropriate amount of gaseous ammonia is introduced into the stream of liquid through a jet, by the sucking-jet principle, and the stream of liquid is recycled to the reactor.

    摘要翻译: 由甲酸甲酯和气态氨连续制备甲酰胺。 该反应在30-90℃的反应器中进行,5至20体积%的反应器输出连续排出,并送入甲酰胺处理阶段,反应器输出的其余部分被冷却 在通过泵保持的外部电路中,温度为25至60℃,并与稳态操作所需的新鲜甲酸甲酯的量混合,之后将适量的气态氨引入到 液体通过喷射原理通过射流,并且液体流被再循环到反应器中。

    Recovery of the formic acid/water azeotrope by distillation
    7.
    发明授权
    Recovery of the formic acid/water azeotrope by distillation 失效
    通过蒸馏回收甲酸/水共沸物

    公开(公告)号:US3983010A

    公开(公告)日:1976-09-28

    申请号:US547642

    申请日:1975-02-06

    CPC分类号: C07C51/44

    摘要: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

    摘要翻译: 甲酸通过分馏从含有甲酸,甲酸甲酯,甲醇和水的混合物中分离,将混合物进料到蒸馏塔的上半部分,并将5至15个理论塔板保持在进料点上方和10至25个理论塔板 低于饲料点。 甲酸在塔的底端作为与水的共沸物排出,共沸物处于液态或优选处于蒸汽状态。

    Manufacture of predominantly straight-chain aldehydes
    8.
    发明授权
    Manufacture of predominantly straight-chain aldehydes 失效
    主要生产直链醛

    公开(公告)号:US3941848A

    公开(公告)日:1976-03-02

    申请号:US382277

    申请日:1973-07-24

    CPC分类号: C07C45/50

    摘要: An improvement in the process for the manufacture of predominantly straight-chain aldehydes by hydroformylation of olefinically unsaturated compounds of 2 to 20 carbon atoms with carbon monoxide and hydrogen in which, in a first stage, aqueous cobalt solutions are treated with carbon monoxide and hydrogen at temperatures of 50.degree. to 200.degree.C and pressures of 100 to 400 atmospheres in the presence of active charcoal, zeolites or basic ion exchangers which are charged with cobalt carbonyl, in a second stage cobalt carbonyl-hydride is extracted from the reaction mixtures thus obtained, at temperatures of 20.degree. to 180.degree.C and pressures of 1 to 400 atmospheres, by means of olefinically unsaturated compounds which must be water-insoluble and liquid under the conditions used, the aqueous phase is separated off and the organic phase is transferred to a third stage and in this stage, after introducing olefinically unsaturated compounds if the latter have only been used partially for the extraction, the hydroformylation is carried out at temperatures of 70.degree. to 170.degree.C and pressures of 100 to 400 atmospheres, the improvement being that the extraction in the second stage is carried out as a co-current extraction whilst maintaining turbulent flow.

    摘要翻译: 通过用一氧化碳和氢气将2-20个碳原子的烯属不饱和化合物加氢甲酰化制备主要是直链醛的方法的改进,其中在第一阶段中用一氧化碳和氢处理含钴水溶液 在由此得到的反应混合物中提取在第二阶段钴羰基氢化物中,在活性炭,沸石或带有羰基钴的碱性离子交换剂存在下,在50〜200℃的温度和100〜400个大气压的压力 在20〜180℃的温度和1〜400个大气压的压力下,通过烯烃不饱和化合物,在所用的条件下必须是不溶于水和液体的,分离出水相,将有机相转移到 在第三阶段,在这一阶段,如果后者仅部分用于前者,则引入烯属不饱和化合物 牵引,加氢甲酰化在70〜170℃的温度和100〜400个大气压的压力下进行,其改进在于,在保持湍流的同时进行第二阶段的萃取。

    Preparation of C.sub.3 -C.sub.25 -alkanols
    9.
    发明授权
    Preparation of C.sub.3 -C.sub.25 -alkanols 失效
    制备C3-C25-链烷醇

    公开(公告)号:US4709105A

    公开(公告)日:1987-11-24

    申请号:US932637

    申请日:1986-11-19

    CPC分类号: C07C29/141

    摘要: Preparation of C.sub.3 - to C.sub.25 -alkanols by catalytic hydrogenation of corresponding crude C.sub.3 - to C.sub.25 -alkanols, as obtained in the cobalt-catalyzed hydroformylation of C.sub.2 - to C.sub.24 -olefins, by partial 80-95% hydrogenation conversion in a first stage using a silica supported nickel and molybdenum oxide catalyst and then completing the conversion in a second stage using a cobalt catalyst containing copper, manganese, molybdenum and,optionally other activating additives. The process is especially adapted to the economic preparation of C.sub.9 -C.sub.11 - and C.sub.13 -C.sub.15 -alkanols which are used to prepare high-grade plasticizer esters.

    摘要翻译: 通过在C2-至C24-烯烃的钴催化加氢甲酰基化中获得的相应的粗C3-至C25-链烷醇的催化氢化,通过在第一阶段中部分80-95%氢化转化使C3-至C25-链烷醇的制备 二氧化硅负载的镍和氧化钼催化剂,然后使用含有铜,锰,钼和任选的其它活化添加剂的钴催化剂在第二阶段完成转化。 该方法特别适用于用于制备高级增塑剂酯的C9-C11-和C13-C15-链烷醇的经济性制备。