公开(公告)号：US4298763A

公开(公告)日：1981-11-03

申请号：US126896

申请日：1980-03-03

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

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

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

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5387402A

公开(公告)日：1995-02-07

申请号：US66301

申请日：1993-05-21

Applicant: Michael Tacke ,  Peter Ahrens ,  Hugo Grimm ,  Heinz Neumann ,  Egon Winkler ,  Arend Werner ,  Walter Beitelschmidt ,  Bruno Triebskorn

Inventor： Michael Tacke ,  Peter Ahrens ,  Hugo Grimm ,  Heinz Neumann ,  Egon Winkler ,  Arend Werner ,  Walter Beitelschmidt ,  Bruno Triebskorn

IPC: B01J8/02 ,  C01B17/80 ,  F28D7/00 ,  B01D50/00 ,  F01N3/10

CPC classification number: B01J8/0285 ,  B01J8/0278 ,  C01B17/803 ,  B01J2208/00132

Abstract: To effect a quasi-isothermal catalytic reaction of SO.sub.2 to SO.sub.3, a plurality of consecutive rows of banks of cooling tubes, are provided in the bed of shaped catalyst bodies in a contact reactor in such a manner that the banks of succeeding rows are staggered from the banks of the preceding rows. The distance between the cooling tubes in the banks is so selected that a penetration of entire catalyst bodies into the banks will virtually be prevented. The banks are so designed that the pressure drop of the gas in the banks is approximately the same as the pressure drop in the layer of catalyst between the bank. The distance between the banks is larger than the width of the banks.

Abstract translation: 为了实现SO2与SO3的准等温催化反应，在接触反应器中的成形催化剂体床中设置多个连续排的冷却管排，使得后续排的排与 前一行的行。 两组中的冷却管之间的距离如此选择，从而实际上可以防止整个催化剂体渗入到组中。 这些堤设计成使得堤岸中的气体的压降几乎与堤岸之间的催化剂层的压降相同。 银行之间的距离大于银行的宽度。