Abstract: In a device for distributing an ammonia/air mixture coming from a tube in the catalytic oxidation of ammonia across the cross section of a vessel whose diameter is a multiple of the tube diameter, the inlet tube is provided with a concentrically arranged inner tube and internal fittings for generating rotation are arranged in the annulus between inlet tube and inner tube to prevent formation of N2O in ammonia oxidation.

Abstract: In a process for preparing oxides of nitrogen having a low degree of oxidation by catalytic oxidation of ammonia, ammonia mixed with air and water vapor is oxidized over an oxidation catalyst.

Abstract: The present invention relates to a device for padding corners of, for example, equipment housings. The device has two arms joined to each other at an angle and cheeks. The cheeks are fitted to the outside of the arms. To enable a device of this kind to be used in a variety of applications, i.e., over a wide range of housing sizes, and still remain firmly in place, each arm of the device has a honeycomblike structure designed so that it can be stretched in the lateral direction of the device.

Abstract: The invention relates to a process for removing nitrogen oxides from a gas stream containing same, which comprises passing the gas stream(A) through a stage for absorbing the nitrogen oxides other than N.sub.2 O in an absorbent or reacting the nitrogen oxides other than N.sub.2 O with an absorbent at a pressure of from 1,5 to 20 bar, and(B) through a stage for reducing the amount of N.sub.2 O, preferably employing the pressure level of step A, and to apparatus therefor and the use thereof.

Abstract: In a process for the continuous preparation of adipic acid by hydrolysis of C.sub.1 -C.sub.4 -alkyl adipates with water at an elevated temperature in the presence of a strongly acidic ion exchanger, the improvement that the esters and excess water are fed to the middle section of a column, reaction mixture is taken off at a plurality of trays of the column below the feed point, passed over a strongly acidic ion exchanger and recycled, alkanols or alkanol/water mixtures are taken off at the top of the column and an aqueous solution of adipic acid is taken off at the bottom of the column.