公开(公告)号：FR1392764A

公开(公告)日：1965-03-19

申请号：FR966439

申请日：1964-03-06

Applicant: BASF AG

Inventor： JOCKERS KURT ,  MEIER HERMANN ,  EBERHARDT ERNST ,  TAGLINGER LUDWIG

IPC: C01B21/14

公开(公告)号：GB981055A

公开(公告)日：1965-01-20

申请号：GB1733063

申请日：1963-05-02

Applicant: BASF AG

Inventor： EBERHARDT ERNST ,  SPECHT HANS GEORG

IPC: G01G11/00

Abstract: 981,055. Weighing-apparatus. BADISCH ANILIN-& SODA-FABRIK A.G. May 2, 1963 [May 5, 1962], No. 17330/63. Heading G1W. [Also in Division G3] A weighing apparatus comprises a conveyer belt 2 on to which material is fed by a vibrating shoot 24 from a container 25, counterbalanced by a weigh beam 13 about a pivoting axis 12. The conveyer belt is supported by rollers 3, 4 in a frame 1, the rollers being driven by a motor 9 through gearing 26. The weigh-beam 13 has sliding weights 14, 15 and movement is damped by an eddy-current device 20 and detected by a differential transformer 21, the output of which has a phase-shift of 180 degrees about a zero-position. The output of the transformer is fed to a regulator 22 which controls a servomotor positioning a control resistance of the vibrating shoot 24 through a slip coupling. The balance is pivoted by cross-bands 28 and arranged in a Z-form as shown, the conveyer belt being separated from the weigh-beam by a partition 16 which forms with a wall 17 a chamber 19 which is pressurized, to exclude dust, through an opening 18. The upper section of the belt conforms to the shape of a supporting trough and the lower section is flanked by a guard plate Fig. 3, not shown.

公开(公告)号：GB1046656A

公开(公告)日：1966-10-26

申请号：GB706964

申请日：1964-02-20

Applicant: BASF AG

Inventor： JOCKERS KURT ,  MEIER HERMANN ,  EBERHARDT ERNST ,  TAGLINGER LUDWIG

IPC: C01B21/14

Abstract: In the preparation of hydroxylammonium salts, in a continuous process by catalytic reduction of No with H2 in contact with Pt catalysts in the presence of dilute inorganic acids, the reduction is carried out in at least two successive stages; fresh acid is supplied at the first stage and hydroxylammonium salt withdrawn from the last stage, the acid concentration decreases from stage to stage. The catalyst may be periodically gassed with NO, a mixture of NO and N2 or a mixture of NO and CO2, in each case in the absence of hydrogen. Reaction temperature may be 40 DEG to 50 DEG C. and the catalyst may have Pt content of 0.3 to 5%. Fig. 3 illustrates a four-stage process for this reaction. E.g. 4 to 5 N H2So4 together with Pt catalyst from the separator S are introduced into reactor I and passed through reactors II, III and IV to the separator S. The normalities of H2SO4 in the zones range from 3.20 to 0.30. No and H2 mixture is passed in parallel through reactors IV, III and II, the off-gas from these reactors is collected and passed through reactor I. After leaving I, remaining off-gas is burnt. Fig. 1 (not shown) illustrates a system in which 8 reactors are arranged in two parallel lines of 4. Fig. 2 (not shown) is a 5-stage system where Stages I and II are fed with off-gas from Stages III, IV and V.