VAPOUR PHASE ESTERIFICATION OF FREE FATTY ACIDS
    8.
    发明公开
    VAPOUR PHASE ESTERIFICATION OF FREE FATTY ACIDS 审中-公开
    游离脂肪酸的汽相酯化

    公开(公告)号:EP2215193A1

    公开(公告)日:2010-08-11

    申请号:EP07855443.3

    申请日:2007-11-30

    IPC分类号: C10G3/00 C11C3/04

    摘要: A method is presented for producing biodiesel from a triglyceride feedstock. The feedstock is pretreated by thermal cracking or rapid pyrolysis to form a middle distillate fraction rich in fatty acids. The middle distillate fraction is then treated by vapour phase esterification under vacuum and in the presence of an alcohol and a solid acid catalyst to produce a biodiesel stream. The biodiesel stream can be treated with a basic solution to convert residual free fatty acids to non-foaming metallic soaps, which are separated by known means. A method is also provided for producing a biodiesel/naphtha mixture, in which a triglyceride feedstock is pretreated by thermal cracking or rapid pyrolysis to produce a middle distillate fraction, a naphtha stream and a gas stream. The naphtha stream and the middle distillate fraction are then treated by vapour phase esterification under vacuum and in the presence of an alcohol and a solid acid catalyst to produce a mixed biodiesel/naphtha stream.

    摘要翻译: 介绍了一种从甘油三酯原料生产生物柴油的方法。 原料通过热裂化或快速热解预处理以形成富含脂肪酸的中间馏分馏分。 然后在真空下并在醇和固体酸催化剂存在下通过气相酯化处理中间馏分馏分以产生生物柴油流。 生物柴油流可以用碱性溶液处理以将残余的游离脂肪酸转化成非发泡金属皂,其通过已知方式分离。 还提供了生产生物柴油/石脑油混合物的方法,其中甘油三酯原料通过热裂化或快速热解来预处理以产生中间馏分,石脑油流和气流。 然后在真空下并在醇和固体酸催化剂存在下通过气相酯化处理石脑油流和中间馏分馏分以产生混合生物柴油/石脑油流。

    BACKFILL PASTE PRODUCTION FACILITY AND METHOD AND APPARATUS FOR PRODUCING HIGH DENSITY SLURRY AND PASTE BACKFILLS
    9.
    发明公开

    公开(公告)号:EP0954417A1

    公开(公告)日:1999-11-10

    申请号:EP98900834.0

    申请日:1998-01-23

    IPC分类号: B28C9

    CPC分类号: B28C9/004

    摘要: The invention relates to a method and apparatus for producing high density slurry and paste backfills for use in mining operations and to associated backfill paste production facilities which incorporate the aforesaid method and apparatus. The high density slurry or paste is produced from a mill tailings mixture in a silo (11) which includes a percolation/decant device (12) for percolating water out of the mill tailings mixture and for decanting clarified water (64) from atop the settled tailings (66). While settling occurs, air is introduced from the bottom (13) of the silo (11) to agitate the mixture to ensure substantially homogeneous settlement of the solids. Once settled, the resultant high density slurry or paste is fluidized by air in order to give the paste more readily flowable characteristics. The flowable paste can then be mixed with a setting agent and pumped or transported to the mine site to be used as a settable backfill.