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    • 5. 发明申请
    • METHOD FOR CONTINUOUSLY PRODUCING NITROBENZENE
    • 连续生产硝基苯的方法
    • US20130204043A1
    • 2013-08-08
    • US13812690
    • 2011-07-26
    • Thomas KnaufMichael MerkelAndreas Karl RauschPeter LehnerJürgen Münnig
    • Thomas KnaufMichael MerkelAndreas Karl RauschPeter LehnerJürgen Münnig
    • C07C201/14
    • C07C201/14C07C201/08C07C201/16C07C209/36C07C205/06C07C211/46
    • The present invention relates to a continuous process for the production of nitrobenzene by nitration of benzene with nitric acid or mixtures of nitric acid and sulfuric acid to give a crude nitrobenzene, washing of the crude nitrobenzene by means of at least one of each of an acid, alkaline and neutral washing, there being obtained a pre-purified nitrobenzene which, as well as containing nitrobenzene, at least contains also low boilers, optionally middle boilers as well as high boilers and salts, wherein the pre-purified nitrobenzene is purified further by separating off low boilers in a distillation apparatus by evaporation of the low boilers, and separation of nitrobenzene from the resulting further purified nitrobenzene in a distillation apparatus by partial evaporation of nitrobenzene, wherein pure nitrobenzene is removed from the distillation apparatus in gaseous form and is subsequently condensed, and wherein the non-evaporated portion of the further purified nitrobenzene is fed back into the washing at any desired point.
    • 本发明涉及通过用硝酸或硝酸和硫酸的混合物硝化硝酸生产硝基苯的连续方法,得到粗硝基苯,通过以下各项中的至少一种酸洗粗硝基苯 碱性和中性洗涤,得到预纯化的硝基苯以及含有硝基苯,至少还含有低锅炉,任选的中间锅炉以及高锅炉和盐,其中预纯化的硝基苯进一步通过 通过蒸发低沸点锅炉将蒸馏装置中的低锅炉分离出来,并通过硝基苯的部分蒸发在蒸馏装置中将硝基苯与所得到的进一步纯化的硝基苯分离,其中将纯硝基苯以气态从蒸馏装置中除去,随后 冷凝,并且其中进一步纯化的硝基苯的未蒸发部分进料 回到任何想要的点的洗涤。
    • 9. 发明申请
    • CHEMICAL REACTOR HAVING WOVEN WIRE MESH PRODUCT AS A RETAINING DEVICE FOR PARTICLES
    • 具有作为颗粒保留装置的WOVEN MESE产品的化学反应器
    • US20130296610A1
    • 2013-11-07
    • US13988326
    • 2011-11-15
    • Michael MerkelKarl-Heinz WilkeThomas Knauf
    • Michael MerkelKarl-Heinz WilkeThomas Knauf
    • B01J8/02
    • B01J8/0292B01J8/025B01J8/44B01J2208/00884Y10T428/12424
    • In a chemical reactor for heterogeneously catalysed reaction of a fluid, comprising a holding device for catalyst particles and/or inert particles (80, 100) through which the fluid flows, the side of the holding device lying upstream when viewed in the direction of flow of the fluid comprises knitted wire mesh fabric (50), and the average clear mesh width of the knitted wire fabric (50) is smaller than the average particle size x50.3 of the particles (80, 100). The invention furthermore relates to a process for reaction of a fluid, wherein the reaction is carried out in a reactor according to the invention in the presence of heterogeneous catalyst particles (80) and the catalyst particles (80) are arranged in the holding device for catalyst particles (80). The invention also provides the use of knitted wire mesh fabric (50) as a holding device for catalyst particles and/or inert particles (80, 100) in chemical reactors.
    • 在用于流体的异质催化反应的化学反应器中,包括用于催化剂颗粒的保持装置和/或流体流过的惰性颗粒(80,100),当从流动方向观察时,保持装置的侧面位于上游 的流体包括针织丝网织物(50),并且针织线织物(50)的平均透明网格宽度小于颗粒(80,100)的平均粒径×50.3。 本发明还涉及一种流体反应的方法,其中反应在非均相催化剂颗粒(80)存在的情况下在根据本发明的反应器中进行,催化剂颗粒(80)被布置在用于 催化剂颗粒(80)。 本发明还提供了在化学反应器中使用针织丝网织物(50)作为催化剂颗粒和/或惰性颗粒(80,100)的保持装置。