会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • PROCESS FOR PRODUCTION OF ACRYLIC ACID
    • 丙烯酸生产工艺
    • WO2017025391A1
    • 2017-02-16
    • PCT/EP2016/068478
    • 2016-08-03
    • BASF SE
    • KORN, Tobias JohannesBLUM, TillCARLINE, TravisFUCHS, ChristopherWELCH, DarrylZUROWSKI, PeterSCHLIEPHAKE, VolkerRISSEL, SteffenFRIESE, ThorstenJAEGER, UlrichHAREMZA, Sylke
    • C07C51/235C07C57/04
    • C07C45/32C07C45/33C07C45/35C07C45/38C07C45/39C07C45/783C07C51/21C07C51/235C07C51/245C07C51/252C07C51/42C07C51/43C07C51/44C07C51/47C07C57/04
    • The invention is related to a process for production of acrylic acid comprising the following steps: a) preparation of a product gas mixture by a catalytic gas-phase oxidation of at least one C 3 precursor compound to acrylic acid, wherein acrylic acid is formed as a main product of the catalytic gas-phase oxidation and glyoxal is formed as a by-product and the product gas mixture comprises acrylic acid and glyoxal, b) cooling of the product gas mixture, c) contacting the product gas mixture in countercourrent with an absorbent, wherein an absorbate A, comprising the absorbent and absorbed acrylic acid, is formed, d) introducing a feed stream F (2) comprising at least part of the absorbate A into arectification column comprising a rectifying section and a stripping section, e) enriching the absorbent in the stripping section and enriching acrylic acid in the rectifying section, f) withdrawing a stream C of crude acrylic acid comprising at least 90% by weight of acrylic acid out of the rectifying section as a side stream, wherein step c) is carried out in an absorption column (12) comprising at least two cooling loops, a first cooling loop (14), wherein a high boiler fraction of the product gas mixture is condensed and a second cooling loop (16), wherein a low boiler fraction of the product gas mixture is condensed, wherein a portion of the absorbate A, which comprises the feed stream F (2), is removed from the absorption column (12) at a side take-off (20), the side take-off (20) being located at the first cooling loop (14) or at a height of the absorption column (12) between the first cooling loop (14) and the second cooling loop (16) and wherein a temperature (Tc) of the absorbate A in the second cooling loop is at least 56°C.
    • 本发明涉及一种生产丙烯酸的方法,包括以下步骤:a)通过至少一种C3前体化合物的催化气相氧化制备产物气体混合物至丙烯酸,其中丙烯酸形成为 作为副产物形成催化气相氧化和乙二醛的主要产物,产物气体混合物包含丙烯酸和乙二醛,b)冷却产物气体混合物,c)将产物气体混合物与吸附剂 ,其中形成包含吸收和吸收的丙烯酸的吸收剂A,d)将包含至少一部分吸收剂A的进料流F(2)引入到包括精馏段和汽提段的蒸馏塔中,e)富集 汽提部分中的吸收剂和精馏部分中的富集丙烯酸,f)将粗丙烯酸流C包含至少90重量%的丙烯酸 其中步骤c)在包括至少两个冷却回路的吸收塔(12)中进行,第一冷却回路(14),其中产物气体混合物的高沸点馏分冷凝,和 第二冷却回路(16),其中产物气体混合物的低沸点馏分冷凝,其中包含进料流F(2)的吸收剂A的一部分在吸收塔(12)的一侧被去除 起落架(20),侧向起飞(20)位于第一冷却回路(14)处或位于第一冷却回路(14)和第二冷却回路(14)的吸收塔(12)的高度处 16),其中第二冷却回路中的吸收剂A的温度(Tc)至少为56℃。