PROCESS FOR THE PRODUCTION OF FURFURAL
    1.
    发明申请
    PROCESS FOR THE PRODUCTION OF FURFURAL 有权
    生产过程的过程

    公开(公告)号:US20130172584A1

    公开(公告)日:2013-07-04

    申请号:US13729480

    申请日:2012-12-28

    IPC分类号: C07D307/50

    CPC分类号: C07D307/50

    摘要: Furfural is produced by mixing an aqueous feedstock solution containing C5 sugar and/or C6 sugar with a heated high boiling, water-miscible solvent, such as sulfolane, and a solid acid catalyst. Furfural product and water can be distilled off, leaving non-volatile solvent behind. Furfural yields of over 70% at as high as 99% conversion have been obtained with this process with sulfolane as the reaction solvent and zeolite beta as the solid acid catalyst. Also, certain by-products (e.g., humins) solubilized in the reaction solvent can be precipitated by addition of water or aqueous feedstock solution and then removed by filtration, thereby providing a convenient and effective way of removing these undesirable byproducts from the reaction mixture.

    摘要翻译: 通过将含有C5糖和/或C6糖的水性原料溶液与加热的高沸点,水混溶性溶剂如环丁砜和固体酸催化剂混合来制备糠醛。 糠醛产品和水可以蒸馏出来,留下非挥发性溶剂。 用环丁砜作为反应溶剂和沸石β作为固体酸催化剂,该方法已经获得高达99%转化率的糠醛产率超过70%。 此外,溶解在反应溶剂中的某些副产物(例如,胡氏体)可以通过加入水或原料溶液沉淀,然后通过过滤除去,从而提供从反应混合物中除去这些不期望的副产物的方便有效的方法。

    PROCESS FOR PRODUCING POLYESTER ARTICLE
    2.
    发明申请

    公开(公告)号:US20190085163A1

    公开(公告)日:2019-03-21

    申请号:US16095538

    申请日:2017-04-25

    摘要: The disclosure relates to processes for producing lightweight polyethylene terephthalate articles such as bottles that retain good barrier properties against the permeation of oxygen, carbon dioxide and/or water vapor. The use of relatively small amounts of polytrimethylene furandicarboxylate during the formation of the PET bottles can produce a bottle having the required barrier properties and result in the use of less material.

    Process for the production of furfural
    5.
    发明授权
    Process for the production of furfural 有权
    糠醛生产工艺

    公开(公告)号:US09181209B2

    公开(公告)日:2015-11-10

    申请号:US13729375

    申请日:2012-12-28

    IPC分类号: C07D311/92 C07D307/50

    CPC分类号: C07D307/50

    摘要: Furfural is produced by mixing an aqueous feedstock solution containing C5 sugar and/or C6 sugar with a heated, high boiling, water-miscible solvent, such as sulfolane, and a soluble acid catalyst. Furfural product and water are distilled off through a multistage distillation column, leaving non-volatile solvent behind. Typical furfural yields with sulfolane as the reaction solvent are about 80% at as high as 99% conversion. Also, certain by-products (e.g., humins) solubilized in the reaction solvent can be precipitated by addition of water or aqueous feedstock solution and then removed by filtration, thereby providing a convenient and effective way of removing these undesirable byproducts from the reaction mixture.

    摘要翻译: 糠醛通过将含有C5糖和/或C6糖的原料水溶液与加热的,沸点高的水混溶性溶剂如环丁砜和可溶性酸催化剂混合而制备。 通过多级蒸馏塔蒸馏出糠醛产物和水,留下非挥发性溶剂。 以环丁砜作为反应溶剂的典型糠醛产率为高达99%转化率的约80%。 此外,溶解在反应溶剂中的某些副产物(例如,胡氏体)可以通过加入水或原料溶液沉淀,然后通过过滤除去,从而提供从反应混合物中除去这些不期望的副产物的方便有效的方法。

    PROCESS FOR THE PRODUCTION OF FURFURAL
    7.
    发明申请
    PROCESS FOR THE PRODUCTION OF FURFURAL 审中-公开
    生产过程的过程

    公开(公告)号:US20130168227A1

    公开(公告)日:2013-07-04

    申请号:US13729526

    申请日:2012-12-28

    IPC分类号: C07D307/48

    CPC分类号: C07D307/48 C07D307/50

    摘要: Furfural is produced in one step at both high yield and high conversion from a feedstock comprising solid biomass and/or insoluble polysaccharide, in a high boiling, water-miscible solvent containing a soluble acid catalyst, and water. Furfural product and water can be distilled off, leaving non-volatile solvent behind. Because furfural contact with the acidic medium is minimized, degradation is kept to a minimum. The feedstock does not have to be pretreated. Because the biomass undergoes near complete dissolution, the residual material is flowable and easier to handle than residual solids reported from other processes. Further, certain by-products (e.g., humins, lignins) solubilized in the reaction solvent can be precipitated by addition of water or aqueous solution and then removed from the reaction mixture.

    摘要翻译: 在包含固体生物质和/或不溶性多糖的原料,在含有可溶性酸催化剂的高沸点,水混溶性溶剂和水中的高收率和高转化率下,一步生产糠醛。 糠醛产品和水可以蒸馏出来,留下非挥发性溶剂。 因为与酸性介质的糠醛接触最小化,所以降解保持最小。 原料不必经过预处理。 由于生物质几乎接近完全溶解,因此剩余物质可流动并易于处理,其余过程报告的残留物质。 此外,溶解在反应溶剂中的某些副产物(例如,胡椒,木质素)可以通过加入水或水溶液沉淀,然后从反应混合物中除去。

    Process for the production of furfural
    10.
    发明授权
    Process for the production of furfural 有权
    糠醛生产工艺

    公开(公告)号:US09012664B2

    公开(公告)日:2015-04-21

    申请号:US13729445

    申请日:2012-12-28

    IPC分类号: C07D307/48 C07D307/50

    摘要: Furfural is produced by contacting a feedstock solution containing C5 sugar and/or C6 sugar with a solid acid catalyst using reactive distillation. Both high yield and high conversion are obtained, without production of insoluble char in the reaction vessel. Degradation of furfural is minimized by its low residence time in contact with the solid acid catalyst. Higher catalyst lifetime can be achieved because the catalyst is continually washed with the refluxing aqueous solution and not sitting in high-boiling byproducts like humins, which are known to be deleterious to catalyst lifetime.

    摘要翻译: 通过使用反应蒸馏将含有C5糖和/或C6糖的原料溶液与固体酸催化剂接触来制备糠醛。 获得高产率和高转化率,而在反应容器中不产生不溶性焦炭。 通过其与固体酸催化剂接触的低停留时间使糠醛的降解最小化。 可以实现更高的催化剂寿命,因为催化剂连续地用回流水溶液洗涤,而不是位于已知对催化剂寿命有害的高沸点副产物如胡氏。