DESORPTION VIA A TRANSPORTING DESORPTION UNIT FOR THE RECOVERY OF CO2 FROM A GAS STREAM AND A RELATED APPARATUS
    4.
    发明申请
    DESORPTION VIA A TRANSPORTING DESORPTION UNIT FOR THE RECOVERY OF CO2 FROM A GAS STREAM AND A RELATED APPARATUS 审中-公开
    通过用于从气体流和相关装置回收二氧化碳的运输解运单元的解吸

    公开(公告)号:US20140120015A1

    公开(公告)日:2014-05-01

    申请号:US13664813

    申请日:2012-10-31

    IPC分类号: B01D53/14 B01D53/18

    摘要: A method for recovering carbon dioxide (CO2) from a gas stream is disclosed. The method includes the step of reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound. The solid material is then input to a transporting desorption unit, where a decarboxylation reaction takes place, to release substantially pure CO2 gas. The CO2 gas can then be collected and used or transported in any desired way. The transporting desorption unit includes an upstream section at atmospheric pressure and a downstream section at a pressure greater than atmospheric pressure, wherein the upstream section and the downstream section are separated by a hydraulic dynamic seal. A related apparatus including the transporting desorption unit for recovering carbon dioxide (CO2) from a gas stream is also described herein.

    摘要翻译: 公开了从气流中回收二氧化碳(CO 2)的方法。 该方法包括使气流中的CO 2与液体吸收剂的细小液滴反应的步骤,以便形成其中结合CO 2的固体物质。 然后将固体材料输入到发生脱羧反应的输送解吸单元中以释放基本上纯的CO 2气体。 然后可以以任何所需的方式收集和使用或运输二氧化碳气体。 输送解吸单元包括大气压的上游段和大于大气压的压力的下游段,其中上游区段和下游区段通过液压动态密封分隔开。 本文还描述了包括用于从气流中回收二氧化碳(CO 2)的输送解吸单元的相关装置。

    Method for making an aromatic polycarbonate
    7.
    再颁专利
    Method for making an aromatic polycarbonate 有权
    制备芳族聚碳酸酯的方法

    公开(公告)号:USRE40697E1

    公开(公告)日:2009-04-07

    申请号:US11345691

    申请日:2006-01-31

    IPC分类号: C08G64/00

    摘要: This invention relates to an extrusion method preparing polycarbonates from a solution of an oligomeric polycarbonate. A mixture of bis(methyl salicyl)carbonate (BMSC), BPA and a transesterification catalyst are first equilibrated at moderate temperatures to provide a solution of polycarbonate oligomer in methyl salicylate. The solution is then fed to a devolatilizing extruder, where the polymerization reaction is completed and the methyl salicylate solvent is removed. The solution comprising the oligomeric polycarbonate can also be pre-heated under pressure to a temperature above the boiling point of methyl salicylate and subsequently fed to a devolatilizing extruder equipped for rapid flashing off the solvent. The method provides polycarbonate with greater efficiency than the corresponding process in which unreacted monomers are fed to the extruder. Additionally, the method of the invention does not require the isolation of a precursor polycarbonate comprising ester-substituted phenoxy terminal groups.

    摘要翻译: 本发明涉及从低聚聚碳酸酯溶液制备聚碳酸酯的挤压方法。 首先在中等温度下平衡双(甲基水杨酸)碳酸酯(BMSC),BPA和酯交换催化剂的混合物,以提供聚碳酸酯低聚物在水杨酸甲酯中的溶液。 然后将溶液进料到脱挥发分挤出机中,其中聚合反应完成并除去水杨酸甲酯溶剂。 包含低聚物聚碳酸酯的溶液也可以在压力下预加热到高于水杨酸甲酯沸点的温度,随后进料到脱挥发分的挤出机中,以便迅速地从溶剂中闪蒸。 该方法提供聚碳酸酯比未反应的单体进料到挤出机的相应方法具有更高的效率。 另外,本发明的方法不需要分离包含酯取代的苯氧基末端基团的前体聚碳酸酯。

    Method of separating a polymer from a solvent
    8.
    发明授权
    Method of separating a polymer from a solvent 失效
    从溶剂中分离聚合物的方法

    公开(公告)号:US07226989B2

    公开(公告)日:2007-06-05

    申请号:US11145816

    申请日:2005-06-06

    IPC分类号: C08F6/10

    摘要: A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. The one-step method is highly efficient having very high throughput rates while at the same time providing a polymer product containing low levels of residual solvent.

    摘要翻译: 描述了分离聚合物 - 溶剂混合物的方法,其中将聚合物 - 溶剂混合物在引入包含上游通气口和/或侧面进料通气口的挤出机中之前被加热以允许溶剂的闪蒸,以及用于除去的下游通气孔 的剩余溶剂。 一步法是高效率的,具有非常高的生产率,同时提供含有低水平残余溶剂的聚合物产物。