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    Preparation of coated catalysts
    1.
    发明授权
    Preparation of coated catalysts 失效
    涂层催化剂的制备

    公开(公告)号：US4297247A

    公开(公告)日：1981-10-27

    申请号：US126385

    申请日：1980-03-03

    申请人： Richard Krabetz ,  Walter Herrmann ,  Heinz Engelbach ,  Peter Palm ,  Karl Sommer ,  Heinrich Spahn

    发明人： Richard Krabetz ,  Walter Herrmann ,  Heinz Engelbach ,  Peter Palm ,  Karl Sommer ,  Heinrich Spahn

    IPC分类号： B01J23/00 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J35/10 ,  B01J37/02 ,  C07C45/35 ,  C07C45/36 ,  C07C51/25 ,  C07C57/055 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J23/72

    CPC分类号： B01J23/8878 ,  B01J23/002 ,  B01J23/8885 ,  B01J35/10 ,  B01J37/0221 ,  B01J37/0223 ,  C07C45/35 ,  C07C45/36 ,  C07C51/252 ,  B01J2523/00 ,  B01J35/1009

    摘要： A coated catalyst comprising (a) an inert carrier having a particle diameter of not less than 100 .mu.m and a surface area of up to 20 m.sup.2 /g and (b) a coating which firmly adheres to the outer surface and in the edge zone, near the surface, of the carrier particles, and which contains the catalytic material, can be prepared by applying the catalytic material in the form of a powder of particle size not more than 300 .mu.m, in the presence of water, to the vigorously agitated carrier by a process wherein catalytically active material in an amount of from 1 to 40 g/minute/liter of carrier, and water in a weight ratio of catalytic material to water of from 1:1 to 30:1, are applied continuously and spatially separate from one another, each at a constant speed, onto the carrier particles, which may or may not have been pre-moistened with water in an amount of up to 95% of the particle absorbency, in such a way that the water content of the coating which forms is less than the maximum degree of saturation of the coating of catalytic material.

    摘要翻译： 一种涂覆的催化剂，其包含（a）粒径不小于100微米，表面积至多为20m 2 / g的惰性载体，和（b）牢固粘附于外表面和边缘区域的涂层 载体颗粒附近，并且含有催化剂材料的表面附近的催化剂可以通过在水存在下将粒径不超过300μm的粉末形式的催化材料施加到强力的 搅拌载体，其中以1至40g /分钟/升载体的量的催化活性物质和催化材料与水的重量比为1:1至30:1的水连续施加， 在空间上彼此分离，每个以恒定的速度分离到载体颗粒上，载体颗粒可以或可以不具有以高达颗粒吸收性的95％的量预水的方式使水含量 形成的涂层小于最大程度 催化材料涂层饱和。

    Preparation of coated catalysts
    2.
    发明授权
    Preparation of coated catalysts 失效
    涂层催化剂的制备

    公开(公告)号：US4305843A

    公开(公告)日：1981-12-15

    申请号：US126384

    申请日：1980-03-03

    申请人： Richard Krabetz ,  Heinz Engelbach ,  Peter Palm ,  Heinrich Spahn ,  Walter Herrmann

    发明人： Richard Krabetz ,  Heinz Engelbach ,  Peter Palm ,  Heinrich Spahn ,  Walter Herrmann

    IPC分类号： B01J23/00 ,  B01J23/88 ,  B01J23/887 ,  B01J35/08 ,  B01J37/02 ,  B01J23/31 ,  B01J23/22 ,  B01J23/85

    CPC分类号： B01J23/002 ,  B01J23/88 ,  B01J35/08 ,  B01J37/0221 ,  B01J37/0223 ,  B01J23/8876 ,  B01J2523/00

    摘要： A coated catalyst comprising (a) an inert carrier having particles of not less than 100 .mu.m diameter and a surface area of up to 20 m.sup.2 /g and (b) a coating which contains the catalytic material and adheres firmly to the outer surface and to the edge zone, near the surface, of the carrier particles, can be prepared by applying the catalytic material as a 10-70% strength suspension in water to the agitated carrier particles, which are at below 70.degree. C., if the suspension is sprayed, at a constant rate of from 0.01 to 2.0 kg of active material/hour/liter of carrier onto the carrier particles, while at the same time uniformly passing from 0.1 to 12 m.sup.3 (S.T.P.)/hour/liter of carrier of an inert gas at from 20.degree. to 300.degree. C. over the carrier particles, under conditions such that the water only evaporates incompletely but the water content of the resulting coating is less than the maximum degree of saturation of the catalytic material.

    摘要翻译： 一种涂覆的催化剂，包括（a）具有不小于100μm直径的颗粒和至多20m 2 / g的表面积的惰性载体，和（b）包含催化材料并牢固地粘合到外表面的涂层， 到载体颗粒表面附近的边缘区域，可以通过将催化材料作为10-70％强度的悬浮液施加到水中的搅拌的载体颗粒（其在低于70℃）下制备，如果悬浮液 以0.01〜2.0kg的活性物质/小时/升的载体的恒定速率喷涂到载体颗粒上，同时将0.1〜12m 3（STP）/小时/升的载体 在载体颗粒上的20至300℃的惰性气体，使得水仅不完全蒸发，但所得涂层的水含量小于催化材料的最大饱和度。

    Manufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stages
    4.
    发明授权
    Manufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stages 失效
    通过在两个独立的催化剂阶段用含氧气体氧化丙烯来制造丙烯酸

    公开(公告)号：US4031135A

    公开(公告)日：1977-06-21

    申请号：US595321

    申请日：1975-07-11

    申请人： Heinz Engelbach ,  Richard Krabetz ,  Gerd Duembgen ,  Carl-Heinz Willersinn ,  Ulrich Lebert ,  Fritz Thiessen

    发明人： Heinz Engelbach ,  Richard Krabetz ,  Gerd Duembgen ,  Carl-Heinz Willersinn ,  Ulrich Lebert ,  Fritz Thiessen

    IPC分类号： C07C57/05 ,  C07C45/35 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00 ,  C07C51/32

    CPC分类号： C07C45/35 ,  C07C51/252

    摘要： In the oxidation of propylene to acrylic acid in the gas phase in two spatially separate oxidation stages, a part of the off-gas, which has been freed from condensable products, is fed to the oxidation stages in addition to freshly charged propylene and air, under the following conditions:A. The recycled off-gas and air are in part fed to the first oxidation stage and in part to the second oxidation stage,B. The molar ratio of propylene : oxygen : residual gases fed to the first stage is 1 : 1.5-2.3 : 11-19,C. The molar ratio of the total propylene fed in, to the total oxygen fed in, in the form of air or off-gas, before and after the first stage, and to the total residual gases fed in is 1 : 1.9-2.5 : 13-25, with the proviso thatD. The air and the recycled off-gas are divided between the two feed points in such a way that from 10 to 50% by volume of the total quantity of air and off-gas fed in are added after the first stage andE. The air and off-gas are admixed to the reaction gas mixture after the first stage, immediately after it leaves the catalyst zone, so that the mixture is rapidly cooled to a temperature of from 150.degree. to 320.degree. C.

    摘要翻译： 在两个空间分离的氧化阶段中，在气相中将丙烯氧化成丙烯酸，除了新鲜电荷的丙烯和空气之外，将一部分已经脱除可冷凝产物的废气进料到氧化阶段， 在以下条件下：

    Preparation of .alpha.,.beta.-olefinically unsaturated aldehydes of 3 or 4 carbon atoms
    6.
    发明授权
    Preparation of .alpha.,.beta.-olefinically unsaturated aldehydes of 3 or 4 carbon atoms 失效
    制备3或4个碳原子的α，β-烯属不饱和醛

    公开(公告)号：US4298763A

    公开(公告)日：1981-11-03

    申请号：US126896

    申请日：1980-03-03

    申请人： Heinz Engelbach ,  Richard Krabetz ,  Gerd Duembgen ,  Carl-Heinz Willersinn ,  Walter Beitelschmidt

    发明人： Heinz Engelbach ,  Richard Krabetz ,  Gerd Duembgen ,  Carl-Heinz Willersinn ,  Walter Beitelschmidt

    IPC分类号： B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J27/186 ,  B01J37/02 ,  C07C45/35 ,  C07C47/22

    CPC分类号： B01J23/8878 ,  B01J23/8876 ,  B01J23/8877 ,  B01J23/8885 ,  B01J27/186 ,  B01J37/0221 ,  C07C45/35 ,  B01J2523/00 ,  Y10T16/546

    摘要： Acrolein and methacrolein are prepared advantageously by oxidizing propylene or isobutylene, respectively, with an oxygen-containing gas mixture under conventional conditions over a supported catalyst possessing a firmly adhering coating, from 150 to 1,500 .mu.m thick, which contains calcined catalytic material based on molybdenum oxide and has a carrier core with a surface area of less than 15 m.sup.2 /g and a diameter of more than 100 .mu.m, if a coated catalyst is used which has been prepared by applying calcined catalytic material having a particle size of from 0.1 to 300 .mu.m, in an amount of from 1 to 40 g/min/liter of carrier and water in a weight ratio of catalytic material to water of from 1:1 to 8:1, continuously and separately from one another, each at a constant speed, at below 100.degree. C. to vigorously agitated carrier particles which may or may not have been premoistened with water in an amount of up to 95% of the water absorbency of the particles, the prepartion of the catalyst being carried out in such a way that the water content of the coating which forms is less than the maximum degree of saturation of the catalytic material.

    摘要翻译： 丙烯醛和甲基丙烯醛有利地通过在常规条件下用含氧气体混合物在含有150至1,500μm厚的牢固粘附的涂层的负载型催化剂上氧化丙烯或异丁烯，其包含基于钼的煅烧催化材料 并且具有表面积小于15m 2 / g并且直径大于100μm的载体芯，如果使用已经通过将粒径为0.1的煅烧催化材料施加到 300μm，以1至40g / min /升的载体和水，催化材料与水的重量比为1:1至8:1，彼此连续且分开，每个在 恒定速度，低于100℃，以剧烈搅拌的载体颗粒，其可以或可以不预先用水进行预浸泡，其量高达颗粒的吸水性的95％，催化剂b的制备 以使得形成的涂层的含水量小于催化材料的最大饱和度的方式进行。

    Preparation of methacrylic acid
    10.
    发明授权
    Preparation of methacrylic acid 失效
    甲基丙烯酸的制备

    公开(公告)号：US5087744A

    公开(公告)日：1992-02-11

    申请号：US213837

    申请日：1988-06-30

    申请人： Richard Krabetz ,  Gerd Duembgen ,  Franz Merger ,  Michael Jaeger ,  Fritz Thiessen ,  Herbert Vogal

    发明人： Richard Krabetz ,  Gerd Duembgen ,  Franz Merger ,  Michael Jaeger ,  Fritz Thiessen ,  Herbert Vogal

    IPC分类号： B01J27/19 ,  C07B63/04 ,  C07C51/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/055 ,  C07C57/07 ,  C07C67/00

    CPC分类号： C07C51/252

    摘要： Methacrylic acid can be prepared with advantage by gas phase oxidation of methacrolein or isobutyraldehyde over Mo- and P-containing catalysts at from 250.degree. to 400.degree. C. with cooling of the hot reaction gas to below 100.degree. C., absorption of the methacrylic acid in a water-operated absorption column, at below 100.degree. C. and partial recycling into the oxidation reactor after admixture of methacrolein or isobutyraldehyde and oxygen by feeding a quantity of methacrolein or isobutyraldehyde equal to the quantity of methacrolein or isobutyraldehyde consumed in the reaction in liquid form together with a polymerization inhibitor into the reactor gas in the lower two-thirds of the absorber column and upstream of the feed point for the fresh methacrolein or isobutyraldehyde or down-stream of the absorption column splitting off the reactor off-gas a side stream which is washed in a wash column operated with water at

    摘要翻译： 甲基丙烯酸可以通过在250℃至400℃的含Mo和P的催化剂上甲基丙烯醛或异丁醛的气相氧化来制备，同时将热反应气体冷却至低于100℃，吸收甲基丙烯酸 酸在水性吸收塔中，低于100℃，并通过加入与反应中消耗的甲基丙烯醛或异丁醛的量相等的量的异丁烯醛或异丁醛，将甲基丙烯醛或异丁醛和氧气混合后，部分再循环进入氧化反应器 液体形式与聚合抑制剂一起在吸收塔的下三分之二的反应器气体中，在新鲜的甲基丙烯醛或异丁醛的进料点的上游或吸收塔的下游分离反应器废气a 侧流在洗涤塔中用水在<10℃下洗涤以除去未转化的异丁烯醛或异丁醛，其为f 作为吸收塔顶部的水溶液。