公开(公告)号：US3606732A

公开(公告)日：1971-09-21

申请号：US3606732D

申请日：1968-11-04

Applicant: BASF AG

Inventor： WOERNER ALFRED ,  DUEMBGEN GERD ,  SPERBER HEINRICH ,  HAAS HANS ,  GRABOWSKY OTTO

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C67/00 ,  B01D53/16

CPC classification number: C07C45/38 ,  C07C45/783 ,  C07C47/04

Abstract: A PROCESS FOR THE ABSORPTION OF FORMALDEHYDE FROM GAS CONTAINING FORMALDEHYDE (OBTAINED IN THE DEHYDROGENATING OXIDATION OF METHANOL OVER SILVER CATALYSTS) AT ELEVATED TEMPERATURE IN A PLURALITY OF STAGES, WHEREIN THE GAS PASSES THROUGH AT LEAST THREE ABSORPTION STAGES AT TEMPERATURES OF FROM 60* TO ABOUT 90*C., PAARICULARLY FROM 70* TO 85*C., AND IS CONTACTED IN EACH OF THE STAGES FROM THE FIRST STAGE TO THE PENULTIMATE STAGE WITH AN AQUEOUS SOLUTION OF A UREA-FORMALDEHYDE PRECONDENSATE AND IN THE FINAL STAGE IS CONTACTED WITH AN AQUEOUS SOLUTION OF UREA.

公开(公告)号：US3928460A

公开(公告)日：1975-12-23

申请号：US36007673

申请日：1973-05-14

Applicant: BASF AG

Inventor： AICHER ALBRECHT ,  DIEM HANS ,  HAAS HANS ,  HESS KLAUS ,  HUSSY OSKAR ,  MATTHIAS GUENTHER ,  SPERBER HEINRICH ,  STICKEL RICHARD

IPC: C07C47/052 ,  B01J7/00 ,  B01J8/00 ,  B01J23/00 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C10L3/00 ,  F23C99/00 ,  C07C45/16 ,  B01J23/48

CPC classification number: C10L3/00 ,  C07C45/38 ,  C07C47/04

Abstract: The production of combustion gas containing little or no carbon black by mixing a starting mixture of oxygen and methanol with more oxygen in specific proportions, igniting the mixture thus prepared and incompletely burning the methanol in the flame formed. The gas may be used advantageously in all cases where deposition of soot would be troublesome. It may be used with advantage for heating catalysts in catalytic syntheses, for example silver catalysts to be used for catalyzing the reaction of methanol with oxygen to form formaldehyde.

Abstract translation: 通过将氧和甲醇的起始混合物与特定比例的更多的氧混合，生产含有很少或不含炭黑的燃烧气体，点燃由此制备的混合物，并在形成的火焰中不完全燃烧甲醇。 在烟灰沉积麻烦的所有情况下，可以有利地使用气体。 它可以有利地用于在催化合成中加热催化剂，例如用于催化甲醇与氧气反应形成甲醛的银催化剂。

公开(公告)号：US3928461A

公开(公告)日：1975-12-23

申请号：US37225773

申请日：1973-06-21

Applicant: BASF AG

Inventor： DIEM HANS ,  MATTHIAS GUENTHER ,  AICHER ALBRECHT ,  HAAS HANS ,  SCHREIBER HANS ,  SPERBER HEINRICH

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C45/15

CPC classification number: D06P3/54 ,  C07C45/38 ,  C07C47/04

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

Abstract translation: 在银催化剂存在下，通过氧化甲醇脱氢生产甲醛的方法，其中在进入催化剂床之前，将含有水和氧气的混合物引入含水，甲醇和氧气的气态起始混合物中。 该方法生产的甲醛是生产合成树脂，粘合剂和塑料的消毒剂，鞣剂，还原剂和原料。