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    • 71. 发明授权
    • Acetic acid production by way of carbonylation with enhanced reaction and flashing
    • 通过羰基化生产乙酸,增强反应和闪烁
    • US08168822B2
    • 2012-05-01
    • US12459725
    • 2009-07-07
    • Mark O. Scates
    • Mark O. Scates
    • C07C51/12
    • C07C51/12C07C51/44C07C53/08
    • A method of making acetic acid includes: (a) catalytically reacting methanol or a reactive derivative thereof with carbon monoxide in the presence of a homogeneous Group VIII metal catalyst and a methyl iodide promoter in a reactor vessel in a liquid reaction mixture including acetic acid, water, methyl acetate, methyl iodide and homogeneous catalyst, the reactor vessel being operated at a reactor pressure; (b) withdrawing reaction mixture from the reaction vessel and feeding the withdrawn reaction mixture along with additional carbon monoxide to a pre-flasher/post reactor vessel operated at a pressure below the reactor vessel pressure; (c) venting light ends in the pre-flasher vessel and concurrently consuming methyl acetate in the pre-flasher/post reactor vessel. Reaction conditions, residence time and composition are controlled in the pre-flasher/post reactor vessel such that a pre-flash mixture is enriched in acetic acid and diminished in methyl iodide and methyl acetate in the pre-flasher/post reactor vessel. From the pre-flasher/post reaction vessel the acetic acid enriched mixture is (d) withdrawn and fed to a flash vessel.
    • 制备乙酸的方法包括:(a)在反应器容器中,在均匀的第VIII族金属催化剂和甲基碘促进剂存在下,使甲醇或其活性衍生物与一氧化碳催化反应,所述液体反应混合物包括乙酸, 水,乙酸甲酯,甲基碘和均相催化剂,反应器容器在反应器压力下操作; (b)从反应容器中取出反应混合物,并将抽出的反应混合物与另外的一氧化碳一起送入在低于反应器容器压力的压力下操作的预闪蒸器/反应器容器; (c)在预闪蒸器容器内排放轻馏分,同时在预闪蒸发器/后反应器容器中消耗乙酸甲酯。 在闪蒸器/反应器前容器中控制反应条件,停留时间和组成,使得预闪蒸混合物富集在乙酸中,并且在闪蒸器/反应器内容器中的甲基碘和乙酸甲酯减少。 从反闪蒸发器/反应容器之后,将富乙酸的混合物(d)取出并送入闪蒸容器。
    • 76. 发明授权
    • Method and apparatus for carbonylation with reduced catalyst loss
    • 减少催化剂损失的羰基化方法和装置
    • US07902398B2
    • 2011-03-08
    • US11789768
    • 2007-04-25
    • Mark O. ScatesJoshua Gregory Wagner
    • Mark O. ScatesJoshua Gregory Wagner
    • C07C51/12
    • C07C51/12C07C51/47C07C53/08
    • An apparatus and method for carbonylating a reactant, including sequestering Group VIII catalyst metal from a process stream which generally has a ppb concentration of the catalyst metal. The process stream is treated with a polymer having nitrogen-containing heterocyclic repeat units to sequester the catalyst from the stream, thus allowing valuable catalyst to be recovered and returned to the reaction mixture. An apparatus provides a resin bed downstream of the light ends column in a carbonylation process. Preferably, spent resin is regenerated with a regenerant composition compatible with the carbonylation reaction mixture so that catalyst metal can be directly recycled and the resin re-used.
    • 用于羰基化反应物的装置和方法,包括从通常具有催化剂金属的ppb浓度的工艺流中螯合第VIII族催化剂金属。 用具有含氮杂环重复单元的聚合物处理工艺流以从流中隔离催化剂,从而允许有价值的催化剂回收并返回到反应混合物中。 一种装置在羰基化方法中提供在轻馏分塔下游的树脂床。 优选地,用与羰基化反应混合物相容的再生剂组合物再生废树脂,使得可以直接再循环催化剂金属并重新使用树脂。
    • 77. 发明申请
    • Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
    • 用富含乙酸的闪蒸液羰基化甲醇的方法和装置
    • US20110021817A1
    • 2011-01-27
    • US12924234
    • 2010-09-23
    • Jeremy J. Patt
    • Jeremy J. Patt
    • C07C51/12B01J19/00
    • C07C51/12B01D3/06B01J14/005B01J19/0013B01J31/0231B01J31/20B01J2219/00006B01J2219/00164B01J2219/00202B01J2219/00213B01J2219/0024B01J2531/822B01J2531/827C07C51/445C07C53/08
    • A carbonylation process for producing acetic acid including: (a) carbonylating methanol or its reactive derivatives in the presence of a Group VIII metal catalyst and methyl iodide promoter to produce a liquid reaction mixture including acetic acid, water, methyl acetate and methyl iodide; (b) feeding the liquid reaction mixture at a feed temperature to a flash vessel which is maintained at a reduced pressure; (c) heating the flash vessel while concurrently flashing the reaction mixture to produce a crude product vapor stream, wherein the reaction mixture is selected and the flow rate of the reaction mixture fed to the flash vessel as well as the amount of heat supplied to the flash vessel is controlled such that the temperature of the crude product vapor stream is maintained at a temperature less than 90° F. cooler than the feed temperature of the liquid reaction mixture to the flasher and the concentration of acetic acid in the crude product vapor stream is greater than 70% by weight of the crude product vapor stream.
    • 一种用于生产乙酸的羰基化方法,包括:(a)在第VIII族金属催化剂和甲基碘助催化剂存在下羰基化甲醇或其活性衍生物以产生包括乙酸,水,乙酸甲酯和甲基碘的液体反应混合物; (b)将进料温度下的液体反应混合物送入保持在减压状态的闪蒸容器; (c)加热闪蒸器,同时使反应混合物闪烁以产生粗产物蒸汽流,其中选择反应混合物,并将反应混合物的流速加入闪蒸容器以及供应至闪蒸器的热量 控制闪蒸容器,使得粗产物蒸汽流的温度保持在比液体反应混合物进入闪蒸器的进料温度低于90°F的温度和粗产物蒸气流中乙酸的浓度 大于70重量%的粗产物蒸气流。